CA1231914A - System for diaphragm distillation - Google Patents
System for diaphragm distillationInfo
- Publication number
- CA1231914A CA1231914A CA000483337A CA483337A CA1231914A CA 1231914 A CA1231914 A CA 1231914A CA 000483337 A CA000483337 A CA 000483337A CA 483337 A CA483337 A CA 483337A CA 1231914 A CA1231914 A CA 1231914A
- Authority
- CA
- Canada
- Prior art keywords
- diaphragm
- pipes
- pipe
- passageway
- supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004821 distillation Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000009833 condensation Methods 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000010612 desalination reaction Methods 0.000 claims abstract description 4
- 210000000188 diaphragm Anatomy 0.000 description 25
- 230000032258 transport Effects 0.000 description 9
- 239000013535 sea water Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/27—Micropores
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/28—Porous member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/32—Indirect heat exchange
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/09—Plural feed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/18—Control
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Abstract A system for diaphragm distillation of a liquid, for example for desalination of salt water, comprising a diaphragm, through which vapour, but not liquid can pass, and a condensation surface for condensing vapour having passed through the diaphragm, and necessary passsageways.
According to the invention, the system comprises one or several units, each of which comprises a plurality of pipes located one within the other, viz. a first (1) inner pipe, a second (2) pipe located outside thereof and consisting of a diaphragm of the aforesaid kind, and a third (3) pipe located outside the second (2) pipe, which first (1) and third (3) pipes are of a gas-tight material, that said unit is surrounded by a fourth (4) gas-tight pipe, where a first (5) passageway is formed by the first (1) pipe and a second (6), a third (7) and a fourth (8) passageway are formed between said pipes (1,2;2,3;3,4) in successive order in the direction from the inside outward. The said passageways (5,6,7,8) in radial order are intended to transport a warm medium (WW) for the supply of heat, to transport the liquid (SW) to be distilled, to condense gas having passed through the diaphragm (2) and to transport distillate (PW) which has been condensed, where the condensation of the gas takes place against a condensation surface, which consists of the passageway surface opposite to the diaphragm (2), and, respectively, to transport a cold medium (CW) for heat removal.
Fig. 1 to be published.
According to the invention, the system comprises one or several units, each of which comprises a plurality of pipes located one within the other, viz. a first (1) inner pipe, a second (2) pipe located outside thereof and consisting of a diaphragm of the aforesaid kind, and a third (3) pipe located outside the second (2) pipe, which first (1) and third (3) pipes are of a gas-tight material, that said unit is surrounded by a fourth (4) gas-tight pipe, where a first (5) passageway is formed by the first (1) pipe and a second (6), a third (7) and a fourth (8) passageway are formed between said pipes (1,2;2,3;3,4) in successive order in the direction from the inside outward. The said passageways (5,6,7,8) in radial order are intended to transport a warm medium (WW) for the supply of heat, to transport the liquid (SW) to be distilled, to condense gas having passed through the diaphragm (2) and to transport distillate (PW) which has been condensed, where the condensation of the gas takes place against a condensation surface, which consists of the passageway surface opposite to the diaphragm (2), and, respectively, to transport a cold medium (CW) for heat removal.
Fig. 1 to be published.
Description
System for diaphragm distillation This invention relates to a system f`or diaphragm distill-ation.
Systems for diaphragm distillation are previously known, for example rOr sea water desalination. One such system is known from S~-PS 8002233-8.
In the said patent a system is described to comprise a diaphragm, the properties of which are such that vap-our is permitted to pass through the diaphragm while li-quid cannot pass therethrough. In parallel with the dia-phragm a condensation surface is located and, furtner-more, heat exchangers are provided, the object of which is to maintain the liquid to be distilled warm and to maintain the condensation surface cooled by a colder liquid flowing past.
The present invention has the object to combine in one and the same system. diaphragm distillation and the heat exchange required f`or the distillation process.
The invention implies that a sumple and compact unit is obtained, which can be coupled together with additional units, each of which comprises diaphragm, condensation surface and heat exchanging surfaces.
The present inventionS thus, relates to a system for diaphragm distillation of a liquid, such as for desalin-ating sea water, comprising a diaphragn, through which vapour but not liquid is permitted to pass, and a con-densation surface for condensing vapour having passed through the diaphragm, and necessary passageways. The invention is characterized in that the system comprises one or more units~ each of which comprises a plurality of pipes located one within the other, viz. a first inner pipe, a second pipe located outside thereof and consist-ing o~ a diaphragm of the afore-mentioned kind, and a third pipe located outside the second pipe, the said first and the said third pipe being of a gas-tight mater-ial, that the said unit is surrounded by a fourth gas--tight pipe, and a first passageway is formed by said first pipe, and a second, a third and a fourth passageway are formed between said pipes in successive order in the outward from inside direction, and that said passageways in radial order are intended to transport a hot medium for heat supply, to transport the liquid to be distill-ed, to condensate gas having passed through the diaphragm and to transport distillate having been condensed, which condensation of the gas takes place against a condensati-on surface, which consists of the passageway surface opp-osite to the diaphragm, and, respectively~ to transport a cold medium for conducting away heat.
The invention is described in the following in greater detail, with reference to an embodiment thereof shown in the accompanying drawing where _ig. 1 is a section through a unit assembled of several pipes, Fig. 2 shows schematically a system comprising several units, seen by way of a horizontal section A-A marked in Fig. 3, and Fig. 3 shows the system shown in Fig. 2~ seen by way of a sectional view B-B marked in Fig. 2.
Diaphragm distillation is a method of effecting distill-ation at a relatively low temperature without overpress-ure or vacuum. At diaphragm distillation a difference in temperature is maintained between the liquid to be dist-illed and the surface, against which condensation of gas having passed through the diaphragm takes place. Heat, therefore, is supplied to the liquid to be distilled, and heat is removed from the condensation surface.
Fig. 1 is a schematic view of a section through a unit according to the invention assembled of several pipes.
In Fig. 1 only a part of the unit length is shown. One or several such units can be utilized toge-ther.
Each unit comprises a plurality of pipes located one inside the other, viz. a first inner pipe 1, a second pipe 2 located outside the same~ and a third pipe 3 loc ated outside the second pipe 2. The unit is surrounded by a fourth pipe 4. The first pipe 1, the third pipe 3 and the fourth pipe 4 are made of a gas-tight material, for example plastic or metal. The pipes 1,3~4 should be made of a material, which has good thermal conduction properties and is corrosion resistent. The second pipe
Systems for diaphragm distillation are previously known, for example rOr sea water desalination. One such system is known from S~-PS 8002233-8.
In the said patent a system is described to comprise a diaphragm, the properties of which are such that vap-our is permitted to pass through the diaphragm while li-quid cannot pass therethrough. In parallel with the dia-phragm a condensation surface is located and, furtner-more, heat exchangers are provided, the object of which is to maintain the liquid to be distilled warm and to maintain the condensation surface cooled by a colder liquid flowing past.
The present invention has the object to combine in one and the same system. diaphragm distillation and the heat exchange required f`or the distillation process.
The invention implies that a sumple and compact unit is obtained, which can be coupled together with additional units, each of which comprises diaphragm, condensation surface and heat exchanging surfaces.
The present inventionS thus, relates to a system for diaphragm distillation of a liquid, such as for desalin-ating sea water, comprising a diaphragn, through which vapour but not liquid is permitted to pass, and a con-densation surface for condensing vapour having passed through the diaphragm, and necessary passageways. The invention is characterized in that the system comprises one or more units~ each of which comprises a plurality of pipes located one within the other, viz. a first inner pipe, a second pipe located outside thereof and consist-ing o~ a diaphragm of the afore-mentioned kind, and a third pipe located outside the second pipe, the said first and the said third pipe being of a gas-tight mater-ial, that the said unit is surrounded by a fourth gas--tight pipe, and a first passageway is formed by said first pipe, and a second, a third and a fourth passageway are formed between said pipes in successive order in the outward from inside direction, and that said passageways in radial order are intended to transport a hot medium for heat supply, to transport the liquid to be distill-ed, to condensate gas having passed through the diaphragm and to transport distillate having been condensed, which condensation of the gas takes place against a condensati-on surface, which consists of the passageway surface opp-osite to the diaphragm, and, respectively~ to transport a cold medium for conducting away heat.
The invention is described in the following in greater detail, with reference to an embodiment thereof shown in the accompanying drawing where _ig. 1 is a section through a unit assembled of several pipes, Fig. 2 shows schematically a system comprising several units, seen by way of a horizontal section A-A marked in Fig. 3, and Fig. 3 shows the system shown in Fig. 2~ seen by way of a sectional view B-B marked in Fig. 2.
Diaphragm distillation is a method of effecting distill-ation at a relatively low temperature without overpress-ure or vacuum. At diaphragm distillation a difference in temperature is maintained between the liquid to be dist-illed and the surface, against which condensation of gas having passed through the diaphragm takes place. Heat, therefore, is supplied to the liquid to be distilled, and heat is removed from the condensation surface.
Fig. 1 is a schematic view of a section through a unit according to the invention assembled of several pipes.
In Fig. 1 only a part of the unit length is shown. One or several such units can be utilized toge-ther.
Each unit comprises a plurality of pipes located one inside the other, viz. a first inner pipe 1, a second pipe 2 located outside the same~ and a third pipe 3 loc ated outside the second pipe 2. The unit is surrounded by a fourth pipe 4. The first pipe 1, the third pipe 3 and the fourth pipe 4 are made of a gas-tight material, for example plastic or metal. The pipes 1,3~4 should be made of a material, which has good thermal conduction properties and is corrosion resistent. The second pipe
2 consists of a diaphragm, which ir. known manner is des-igned so as to permit vapour, but not liquid to pass therethrough.
By the arrangement shown in Fig. 1, a first passageway 5 is formed by the first, inner, pipe 1. A second pass-ageway 6,and athird and fourth passageway 3,~ are formed between said pipes in successive order in from inside to outside direction.
The said passageways in radial order are intended to transport a hot medium for t;he supply of heat, to trans-port the liquid to be distilled, to condense gas having passed through the diaphragm 2, and to transport distill-ate having been condensed and~ respectively, to transport a cold medium for the removal of heat. The said radial order can be from inside outward or from outside inward, because two passageways 5 3 6 are located inside of the diaphragm 2 and two passageways 7,8 outside of said dia-phragm.
The invention is described below with reference to the desalination of sea water which, however, constitutes only an example. The invention is not restricte~ to such an application, but can be utilized for each liquid to be diaphragm distilled.
In the following example, furthermore, the first inner pipe is assumed to be intended to transport a hot medium.
In Figs. 1,2 and 3 "WW" designates warm water, "SW"
designates salt water, 'IPW" designates product water, ~3~
"CW" designates cold water and "AIR" designates air.
The system operates as follows. Warrn water WW is pumped through the first passageway 5. The wall of the first pipe 1 is thereby heated, whereby salt water SW pumped through the second passageway 6 is heated. The heated salt water emits water vapour, which passes through the diaphragm 2 into the third passageway 7.The surface of the third pipe 3 is cooled by cold water CW, which is pumped through the fourth passageway 8, to a temperature below the dew point of the vapour. Vapour having passed through the diaphragm condenses against the inside of the third pipe
By the arrangement shown in Fig. 1, a first passageway 5 is formed by the first, inner, pipe 1. A second pass-ageway 6,and athird and fourth passageway 3,~ are formed between said pipes in successive order in from inside to outside direction.
The said passageways in radial order are intended to transport a hot medium for t;he supply of heat, to trans-port the liquid to be distilled, to condense gas having passed through the diaphragm 2, and to transport distill-ate having been condensed and~ respectively, to transport a cold medium for the removal of heat. The said radial order can be from inside outward or from outside inward, because two passageways 5 3 6 are located inside of the diaphragm 2 and two passageways 7,8 outside of said dia-phragm.
The invention is described below with reference to the desalination of sea water which, however, constitutes only an example. The invention is not restricte~ to such an application, but can be utilized for each liquid to be diaphragm distilled.
In the following example, furthermore, the first inner pipe is assumed to be intended to transport a hot medium.
In Figs. 1,2 and 3 "WW" designates warm water, "SW"
designates salt water, 'IPW" designates product water, ~3~
"CW" designates cold water and "AIR" designates air.
The system operates as follows. Warrn water WW is pumped through the first passageway 5. The wall of the first pipe 1 is thereby heated, whereby salt water SW pumped through the second passageway 6 is heated. The heated salt water emits water vapour, which passes through the diaphragm 2 into the third passageway 7.The surface of the third pipe 3 is cooled by cold water CW, which is pumped through the fourth passageway 8, to a temperature below the dew point of the vapour. Vapour having passed through the diaphragm condenses against the inside of the third pipe
3, which surface thus constitutes the condensation surf-ace, and the condensed fresh water PW is conducted away by the third passageway 7 to a collecting tank or the like. The product water, thus, is desalinated sal-t water~
The strucural design of the system implies that it com-prises both distillation elements and heat exchangers.
The system, therefore3 is simple and compact compared with known systems.
The way in which the water in the first passageway is heated or the water in the fourth passa~eway possibly is cooled, does not constitute a part of thepres-ent invent-ion. It is, however, possible to heat water WW by means of solar panels and thereafter to pump this water into the first passageway 5. The cold water CW can, fo. ex-ample, consist of sea water in cases when the salt water SW is sea water. The system then can be arranged at or in the sea.
A heàt pump can be utilized for heating and, respective-ly, cooling water to be pumped into the system.
The system preferably is positioned so that the longi-t-udinal axis of the unit is vertical.
The third passageway 7 preferably is connected at its upper end to the f`ree atmosphere or to a suitable gas.
3~
The reason for this is to prevent a vacuum to be prod~ced in the third passageway 7 at the condensation of the vapour. In order to maintain a radial distance between the diaphragm 2 and the condensation surface, i.e. the inside of the third pipe 3, according to a preferred embodiment a distance member is provided in the third passageway 7. Such a distance member can be, for e~ample, a net, a folded plastic section or another suitable member.
The first pipe 1 and the third pipe 3 can consist of thin plastic foils. In such a case distance members of the aforementioned kind can be provided in several or all of the passageways 5,6,7,8.
The unit described above is particularly suitable for being coupled in parallel with several similar units to a greater unit.
In such a case the fourth, outer pipe 4 is designed to enclose several units, each of which comprises said first, second and third pipe 1~2 and 3.
In Figs. 2 and 3 an embodiment of a system is shown where fourteen units have been coupled in parallel, and the fourth pipe 4 encloses all units. In Figs. 2 and 3 the same designations have been used for corresponding details as in Fig. 1.
According to a preferred embodiment, shown in Figs. 2 and 3, each of the units is designed so that the pipes have different lengths. The first inner pipes 1 are the long-est ones and open with their respective ends 9,10 into a supply and, respectively, removal passageway 11,12.
The said second pipes, i.e. the diaphragms 2, are short-er and open with their respective ends i3,14 into a supply and, respectively, removal passageway 15,16.
The third pipes 3 are shorter than said second pipes 2 and open with their respective ends 17,18 into a remov-3~'~
al passageway 1~ for distillate and, respective1y, intoa supply passageway 20 for air. The said fourth pipe 1' encloses all units and is provided with a supply passage-way 2ll and a removal passageway 25. At the embodiment shol.n in Fig. 3 warm water W~ is transported in the first passageway 5~and salt water SW is transported in the second passageway 6. In the fourth passageway 8 cold water CW is transported. Product water PW is taken out from the third pass2geway 7 via the removal passageway 19.
Air is permitted to pass in to the third passageway 7 via the supply passageway 20. All of the first, third and, respectively, fourth passageways are mutuaily conn-ected at their lower and, respectively, upper ends.
Each of said passageways 5,6,7,8, thus, are connected to each other by having supply and removal passageways in common, so that all units thereby areconnected in parallel.
Such a system is very compact and yields a high product-ion of desalinated sea water. The structural design of the units permits great variation in respect of ~he number of units, which is of great advantage because of the dernand of systems having low capacity or high capacity. What has to be adapted to the capacity is only the number of units, the size of the fourth, outer pipe
The strucural design of the system implies that it com-prises both distillation elements and heat exchangers.
The system, therefore3 is simple and compact compared with known systems.
The way in which the water in the first passageway is heated or the water in the fourth passa~eway possibly is cooled, does not constitute a part of thepres-ent invent-ion. It is, however, possible to heat water WW by means of solar panels and thereafter to pump this water into the first passageway 5. The cold water CW can, fo. ex-ample, consist of sea water in cases when the salt water SW is sea water. The system then can be arranged at or in the sea.
A heàt pump can be utilized for heating and, respective-ly, cooling water to be pumped into the system.
The system preferably is positioned so that the longi-t-udinal axis of the unit is vertical.
The third passageway 7 preferably is connected at its upper end to the f`ree atmosphere or to a suitable gas.
3~
The reason for this is to prevent a vacuum to be prod~ced in the third passageway 7 at the condensation of the vapour. In order to maintain a radial distance between the diaphragm 2 and the condensation surface, i.e. the inside of the third pipe 3, according to a preferred embodiment a distance member is provided in the third passageway 7. Such a distance member can be, for e~ample, a net, a folded plastic section or another suitable member.
The first pipe 1 and the third pipe 3 can consist of thin plastic foils. In such a case distance members of the aforementioned kind can be provided in several or all of the passageways 5,6,7,8.
The unit described above is particularly suitable for being coupled in parallel with several similar units to a greater unit.
In such a case the fourth, outer pipe 4 is designed to enclose several units, each of which comprises said first, second and third pipe 1~2 and 3.
In Figs. 2 and 3 an embodiment of a system is shown where fourteen units have been coupled in parallel, and the fourth pipe 4 encloses all units. In Figs. 2 and 3 the same designations have been used for corresponding details as in Fig. 1.
According to a preferred embodiment, shown in Figs. 2 and 3, each of the units is designed so that the pipes have different lengths. The first inner pipes 1 are the long-est ones and open with their respective ends 9,10 into a supply and, respectively, removal passageway 11,12.
The said second pipes, i.e. the diaphragms 2, are short-er and open with their respective ends i3,14 into a supply and, respectively, removal passageway 15,16.
The third pipes 3 are shorter than said second pipes 2 and open with their respective ends 17,18 into a remov-3~'~
al passageway 1~ for distillate and, respective1y, intoa supply passageway 20 for air. The said fourth pipe 1' encloses all units and is provided with a supply passage-way 2ll and a removal passageway 25. At the embodiment shol.n in Fig. 3 warm water W~ is transported in the first passageway 5~and salt water SW is transported in the second passageway 6. In the fourth passageway 8 cold water CW is transported. Product water PW is taken out from the third pass2geway 7 via the removal passageway 19.
Air is permitted to pass in to the third passageway 7 via the supply passageway 20. All of the first, third and, respectively, fourth passageways are mutuaily conn-ected at their lower and, respectively, upper ends.
Each of said passageways 5,6,7,8, thus, are connected to each other by having supply and removal passageways in common, so that all units thereby areconnected in parallel.
Such a system is very compact and yields a high product-ion of desalinated sea water. The structural design of the units permits great variation in respect of ~he number of units, which is of great advantage because of the dernand of systems having low capacity or high capacity. What has to be adapted to the capacity is only the number of units, the size of the fourth, outer pipe
4 and the attachment means for the remaining pipes.
The attachment means may be, for example~ three spokes 21,22,23 between each of adjacent pipes, as shown in Figo 2. Such sets Or spokes can be located at the ends of the pipes and possibly in one or several places along the length of the pipes.
In all ~igures the first, second and third pipes 1,2l3 are shown to be circular-cylindric. Although this des-ign is preferred, of course, the pipes can be given any desired cross-sectional shape, for example square shape.
At times it is desired to bring about turbulence in the passageways in excess to that occurring naturally in the passageways. For this purpose, means for giving rise to turbul~nce Gan be inserted in the passageways, for example a net, blades or other details.
It is obvious that the system can be modified in many ways apparent to the expert without abandoning the basic idea of the invention, viz.to arrange the different pipes one within the other.
rrhe present invention, thus, must not be regarded re-stricted to the embodiments set forth above, but can be varied within the scope of the attached claims.
The attachment means may be, for example~ three spokes 21,22,23 between each of adjacent pipes, as shown in Figo 2. Such sets Or spokes can be located at the ends of the pipes and possibly in one or several places along the length of the pipes.
In all ~igures the first, second and third pipes 1,2l3 are shown to be circular-cylindric. Although this des-ign is preferred, of course, the pipes can be given any desired cross-sectional shape, for example square shape.
At times it is desired to bring about turbulence in the passageways in excess to that occurring naturally in the passageways. For this purpose, means for giving rise to turbul~nce Gan be inserted in the passageways, for example a net, blades or other details.
It is obvious that the system can be modified in many ways apparent to the expert without abandoning the basic idea of the invention, viz.to arrange the different pipes one within the other.
rrhe present invention, thus, must not be regarded re-stricted to the embodiments set forth above, but can be varied within the scope of the attached claims.
Claims (10)
1. A system for diaphragm distillation of a liquid, comprising a diaphragm, through which vapour, but not liquid can pass, and a condensation surface for condensing vapour having passed through the diaphragm, the necessary passage-ways, characterized in that the system comprises one or several units, each of which comprises a plurality of pipes located one within the other, viz. a first (1) inner pipe, a second (2) pipe located outside thereof and consisting of a diaphragm of the aforesaid kind, and a third (3) pipe located outside the second (2) pipe, which first (1) and third (3) pipes are of gastight material, that said unit is surrounded by a fourth (4) gas-tight pipe, and first (5) passageway is formed by the first (1) pipe, and a second (6), a third (7) and a fourth (8) passageway are formed between said pipes (1,2;2,3;3,4) in successive order in the direction from the inside outward, and that said pass-ageways (5,6,7,8) in radial order are intended to transport a warm medium (WW) for the supply of heat, to transport the liquid (SW) to be distilled, to condensate gas having passed through the diaphragm (2) and to transport distil-late (PW), which has been condensed, where condensation of the gas takes place against a condensation surface con-sisting of the passageway surface opposite to the diaphragm, and, respectively, to transport a cold medium (CW) for heat removal.
2. A system as defined in claim 1, when applied for desalination of salt water.
3. A system as defined in claim 1, characterized in that in cases when several units are utilized, the outer fourth pipe (4) is designed to enclose several units, each of which comprises said first (1), second (2) and third (3) pipes.
4. A system as defined in any of claims 1, 2 or 3, characterized in that a distance member is provided to main-tain a radial distance between the diaphragm (2) and the condensation surface.
5. A system as defined in any of claims 1, 2 or 3, characterized in that a distance net is provided to main-tain a radial distance between the diaphragm (2) and the condensation surface.
6. A system as defined in any of claims 1, 2 or 3, characterized in that said first (1), second (2) and third (3) pipes are circular-cylindric.
7. A system as defined in claim 1 characterized in that in cases when several units are utilized, each of said respective passageways (5,6,7,8) are interconnected by having respective supply and removal passageways (11,12;15,16;19,20) in common.
8. A system as defined in claim 2, characterized in that in cases when several units are utilized, each of said respective passageways (5,6,7,8) are interconnected by having respective supply and removal passageways (11,12;15,16;19.20) in common.
9. A system as defined in claim 3, characterized in that in cases when several units are utilized, each of said respective passageways (5,6,7,8) are interconnected by having respective supply and removal passageways (11,12;15,16;19.20) in common.
10. A system as defined in any of claims 7,8 or 9, char-acterized in that each of the units is designed so that the pipes are different lengths, in such a manner, that the first (1) pipes are the longest ones and open with their respective ends (9,10) into a supply and, respectively, removal passageway (11,12), that the second (2) pipes are shorter and open with their respective ends (13,14) into a supply and, respectively, removal passageway (15,16), and the third (3) pipes are shorter than the second (2) pipes and open at their respective ends (17,18) into a re-moval passageway (19) for distillate (PW) and, respectively, a supply passageway (20) for air (AIR), and that said fourth (4) pipe encloses all units and is provided with a supply passageway (24) and a removal passageway (25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8403081-6 | 1984-06-07 | ||
| SE8403081A SE452451B (en) | 1984-06-07 | 1984-06-07 | MEMBRANE STILLATION DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231914A true CA1231914A (en) | 1988-01-26 |
Family
ID=20356171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000483337A Expired CA1231914A (en) | 1984-06-07 | 1985-06-06 | System for diaphragm distillation |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4718985A (en) |
| EP (1) | EP0164326A3 (en) |
| JP (1) | JPS61502315A (en) |
| AU (1) | AU576878B2 (en) |
| BR (1) | BR8506789A (en) |
| CA (1) | CA1231914A (en) |
| DK (1) | DK59086D0 (en) |
| ES (1) | ES287652Y (en) |
| FI (1) | FI860488A0 (en) |
| MX (1) | MX168201B (en) |
| NO (1) | NO161243C (en) |
| SE (1) | SE452451B (en) |
| WO (1) | WO1986000026A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2197598B (en) * | 1986-10-01 | 1990-09-05 | Geesthacht Gkss Forschung | Device employing membranes |
| SE461443B (en) * | 1987-03-17 | 1990-02-19 | Aapo Saeaesk | DEVICE FOR EVAPORATION OF LIQUID |
| US5100544A (en) * | 1988-09-30 | 1992-03-31 | Daikin Industries, Ltd. | Liquid separating apparatus |
| US5116407A (en) * | 1988-10-13 | 1992-05-26 | Courtaulds Coatings Limited | Antifouling coatings |
| FR2648268B1 (en) * | 1989-06-12 | 1991-09-27 | Framatome Sa | |
| US5102550A (en) * | 1990-11-01 | 1992-04-07 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus and process for desalination of seawater |
| CH685331A5 (en) * | 1992-05-27 | 1995-06-15 | Krebs & Co Ag | Module to perform the pervaporation of fluids. |
| JPH07155561A (en) * | 1993-12-07 | 1995-06-20 | Shimizu Corp | Fresh water generating tube |
| NL9500202A (en) * | 1995-02-03 | 1996-09-02 | Tno | Method and apparatus for treating a medium |
| IL116309A0 (en) * | 1994-12-09 | 1996-10-31 | Tno | Method and installation for treating a medium |
| US6066239A (en) * | 1997-03-18 | 2000-05-23 | The West Bend Company | Water distiller with improved solids-removing baffle device |
| US6358323B1 (en) * | 1998-07-21 | 2002-03-19 | Applied Materials, Inc. | Method and apparatus for improved control of process and purge material in a substrate processing system |
| US6210485B1 (en) * | 1998-07-21 | 2001-04-03 | Applied Materials, Inc. | Chemical vapor deposition vaporizer |
| US7005040B2 (en) * | 2000-09-05 | 2006-02-28 | Astenjohnson, Inc. | Fabric support element for a papermaking machine |
| DE10323440B4 (en) | 2003-05-23 | 2006-10-26 | Sulzer Chemtech Gmbh - Membrantechnik - | Membrane tube module |
| DK1919520T3 (en) | 2005-08-04 | 2013-02-04 | Saban Ventures Pty Ltd | room disinfections |
| US7762993B2 (en) * | 2006-03-30 | 2010-07-27 | James Gerard Perez | Catheter syringe conveyor with a needle guard housing |
| EP1925355A1 (en) | 2006-10-31 | 2008-05-28 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Membrane distillation method for the purification of a liquid |
| WO2008092203A1 (en) | 2007-02-02 | 2008-08-07 | Saban Ventures Pty Limited | Membrane vapour concentrator |
| GB0719390D0 (en) * | 2007-10-04 | 2007-11-14 | Design Tech & Innovation Ltd | Water purification |
| EP2589136B1 (en) | 2010-06-29 | 2018-03-21 | Brusa Elektronik AG | Voltage converter |
| TWM392171U (en) * | 2010-06-30 | 2010-11-11 | Yeu Ming Tai Chemical Ind Co Ltd | Desalination device |
| FR2969932A1 (en) * | 2011-01-03 | 2012-07-06 | Isaac Behar | Vapor phase osmosis module useful in e.g. system to dry humid biomass, comprises double envelope of which internal envelope is constituted of polymer film and external envelope, which is impermeable to water that is in gaseous/liquid state |
| US11369897B2 (en) * | 2015-10-21 | 2022-06-28 | Ffi Ionix Ip, Inc. | System and method of water purification utilizing an ionomer membrane |
| US20210260532A1 (en) * | 2018-07-23 | 2021-08-26 | King Abdullah University Of Science And Technology | Membrane distillation module and multi-effect process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2310399A (en) * | 1940-09-10 | 1943-02-09 | Carbide & Carbon Chem Corp | Distillation process and apparatus |
| US2411238A (en) * | 1943-07-08 | 1946-11-19 | Syivania Ind Corp | Process and apparatus for dialyzing solutions |
| US3878054A (en) * | 1964-12-09 | 1975-04-15 | Pactide Corp | Distillation apparatus and process |
| US3406096A (en) * | 1965-11-26 | 1968-10-15 | Pactide Corp | Distillation under hydrostatic pressure with vapor permeable membrane |
| US3355364A (en) * | 1965-09-22 | 1967-11-28 | Hammond Roland Philip | Plural conduit flash film evaporator for distilling and condensing sea water |
| DE1519714A1 (en) * | 1966-10-07 | 1970-02-19 | Sms Samesreuther Mueller Schus | Thin-film short-path evaporator |
| DE1642833A1 (en) * | 1967-03-16 | 1971-04-29 | Yves Henderyckx | Method and device for separating one or more components from a solution |
| US3540986A (en) * | 1967-05-15 | 1970-11-17 | Louis Joseph Guarino | Distillation condensation apparatus with vapor compression and semipermeable membrane |
| US3520803A (en) * | 1968-12-24 | 1970-07-21 | Ionics | Membrane fluid separation apparatus and process |
| DE2026219C3 (en) * | 1970-05-29 | 1978-05-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Water depletion unit in filter press design for fuel batteries |
| US3661721A (en) * | 1971-02-05 | 1972-05-09 | Pactide Corp | Compact multistage distillation apparatus having stacked microporous membranes and impermeable films |
| US3650905A (en) * | 1971-02-11 | 1972-03-21 | Pactide Corp | Stacked microporous vapor permeable membrane distillation system |
| GB1541283A (en) * | 1975-09-29 | 1979-02-28 | Dow Corning | Solar energy powered distillation unit |
| US4402793A (en) * | 1980-02-19 | 1983-09-06 | Petrek John P | Multiple effect thin film distillation system and process |
| SE419699B (en) * | 1980-03-24 | 1981-08-24 | Finn Torberger | DEVICE FOR LETTING A FIRST LIQUID BUT BUT NOT MIXED WITH ANOTHER LIQUID, SUCH A DEVICE FOR SALTING OF THE SEA WATER |
| US4441963A (en) * | 1980-10-27 | 1984-04-10 | Li Yao T | Distillation apparatus |
| US4545862A (en) * | 1981-03-17 | 1985-10-08 | W. L. Gore & Associates, Inc. | Desalination device and process |
| JPS6099328A (en) * | 1983-11-04 | 1985-06-03 | Toyota Central Res & Dev Lab Inc | Separating apparatus for condensable gas |
| JPS60125203A (en) * | 1983-12-13 | 1985-07-04 | Nitto Electric Ind Co Ltd | Thermo-pervaporation apparatus |
-
1984
- 1984-06-07 SE SE8403081A patent/SE452451B/en not_active IP Right Cessation
-
1985
- 1985-05-31 BR BR8506789A patent/BR8506789A/en unknown
- 1985-05-31 JP JP60502720A patent/JPS61502315A/en active Pending
- 1985-05-31 WO PCT/SE1985/000229 patent/WO1986000026A1/en active Application Filing
- 1985-05-31 AU AU44909/85A patent/AU576878B2/en not_active Ceased
- 1985-05-31 EP EP85850194A patent/EP0164326A3/en not_active Ceased
- 1985-05-31 US US06/840,969 patent/US4718985A/en not_active Expired - Fee Related
- 1985-06-03 MX MX205501A patent/MX168201B/en unknown
- 1985-06-05 ES ES1985287652U patent/ES287652Y/en not_active Expired
- 1985-06-06 CA CA000483337A patent/CA1231914A/en not_active Expired
-
1986
- 1986-01-28 NO NO86860311A patent/NO161243C/en unknown
- 1986-02-03 FI FI860488A patent/FI860488A0/en not_active Application Discontinuation
- 1986-02-06 DK DK59086A patent/DK59086D0/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DK59086A (en) | 1986-02-06 |
| ES287652U (en) | 1986-06-01 |
| ES287652Y (en) | 1987-02-01 |
| US4718985A (en) | 1988-01-12 |
| SE8403081L (en) | 1985-12-08 |
| NO860311L (en) | 1986-01-28 |
| JPS61502315A (en) | 1986-10-16 |
| NO161243B (en) | 1989-04-17 |
| WO1986000026A1 (en) | 1986-01-03 |
| FI860488A (en) | 1986-02-03 |
| EP0164326A2 (en) | 1985-12-11 |
| AU576878B2 (en) | 1988-09-08 |
| EP0164326A3 (en) | 1986-03-05 |
| SE452451B (en) | 1987-11-30 |
| AU4490985A (en) | 1986-01-10 |
| MX168201B (en) | 1993-05-11 |
| DK59086D0 (en) | 1986-02-06 |
| SE8403081D0 (en) | 1984-06-07 |
| FI860488A0 (en) | 1986-02-03 |
| BR8506789A (en) | 1986-11-25 |
| NO161243C (en) | 1989-07-26 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |