CN105040335B - Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment - Google Patents
Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment Download PDFInfo
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- CN105040335B CN105040335B CN201510412465.2A CN201510412465A CN105040335B CN 105040335 B CN105040335 B CN 105040335B CN 201510412465 A CN201510412465 A CN 201510412465A CN 105040335 B CN105040335 B CN 105040335B
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- cleaning
- carbon dioxide
- cleaning device
- central shaft
- impeller
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- 238000004140 cleaning Methods 0.000 title claims abstract description 129
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 53
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 53
- 238000004043 dyeing Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 12
- 239000000975 dye Substances 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 229960004424 carbon dioxide Drugs 0.000 description 44
- 239000012530 fluid Substances 0.000 description 40
- 239000007788 liquid Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000011897 real-time detection Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a cleaning device for a kettle body in supercritical carbon dioxide dyeing equipment. The cleaning device comprise a carbon dioxide inlet pipe, a solvent inlet pipe, a central shaft, an impeller, a cleaning concentration detecting probe, a motor, a lead screw and a heating unit; threads which are matched with each other are arranged inside the central shaft and outside the lead screw respectively; the central shaft is connected with the lead screw through the threads; the top of the lead screw is connected with the impeller through an air hole; the middle of the central shaft is connected with the motor; the carbon dioxide inlet pipe is connected with the bottom of the central shaft through a rotating joint; the solvent inlet pipe is connected with the carbon dioxide inlet pipe through a valve; the heating unit is arranged on the solvent inlet pipe. The cleaning device is simple and flexible to use, the cleaning device can be used for cleaning a dye kettle, a dyeing kettle, a separating kettle and the like, the difficult problem for cleaning critical components of a supercritical carbon dioxide dyeing device is effectively solved, and the cleaning device has a wide application prospect.
Description
Technical field
The present invention relates to the cleaning device and cleaning method of a kind of supercritical CO 2 dyeing equipment, belong to textile printing and dyeing
Field.
Background technology
Traditional textile is dyeed mainly with water as medium, and substantial amounts of dyestuff, auxiliary agent and surfactant are added in dye liquor
Etc. chemical substance, severe contamination is not only caused to environment, while also govern the sustainable development of textile printing and dyeing industry.With
Economical constantly to develop, during " 12 ", the few water of development, energy-conservation, free of contamination staining technique become domestic and international urgent needss.
In 20 end of the centurys, supercritical carbon dioxide waterless staining technique is considered as because of outstanding features such as which is pollution-free, short route, high efficiency
It is a kind of " clean, greenization, environmental protection " and enjoys favor.
Now with constantly studying both at home and abroad, supercritical CO 2 dyeing technology dyes skill as a kind of novel green
Art, is reached the more ripe stage in terms of dyeing installation, dyeing theory and dyeing.Due to dyeing installation structure again
Miscellaneous, dyeing condition is higher, and dyestuff may be trapped in inner wall of kettle.If dyeing temperature is too high, dyestuff may generate polymer,
It is securely attached to inner wall of kettle.After dyeing terminates, the dyestuff of these residuals can not be removed in time, will certainly affect next time
Color and colour changing production.However, a kind of cleaning device of supercritical CO 2 dyeing kettle is had no at present, can be thorough
Solve a cleaning difficult problem for dyeing kettle.Therefore, a kind of cleaning device of supercritical CO 2 dyeing equipment of invention
System and cleaning method, it is adaptable to the cleaning of various kettlies and system.
The content of the invention
The present invention is directed to the problems referred to above, it is proposed that a kind of cleaning device of supercritical CO 2 dyeing equipment and cleaning side
Method.
The cleaning device of kettle in a kind of supercritical CO 2 dyeing equipment, including it is carbon dioxide inlet duct (1), molten
Agent inlet duct (2), central shaft (3), impeller (4), cleaning Concentration Testing probe (6), motor (7), leading screw (8), heating are single
First (9).
Wherein, hollow structure of the central shaft (3) for both ends open；It is provided with outside central shaft (3) inside and leading screw (8)
The screw thread being mutually matched；The central shaft and leading screw are attached by screw thread；Connected by pore at the top of the leading screw (8)
Impeller (4)；The leading screw (8) is hollow structure；The impeller (4) is hollow, double suction, open architecture；The impeller (4) is provided with
6 blades (5)；The blade (5) is swept-back, airfoil type, hollow structure；Blade (5) outer rim is provided with blade duct
(10)；The blade duct is double-row hole, to reduce the friction of blade construction and fluid, increases kinetic energy, meets cleaning needs.
Connect motor (7) in the middle part of the central shaft (3)；Central shaft (3) can drive leading screw and impeller to do perpendicular when rotating
The straight and motion that rotates in a circumferential direction.Its rotary speed is 10-500r/min, and preferred 100r/min, rising or falling speed are 0.5-5m/min, excellent
Select 4m/min.
The carbon dioxide inlet duct (1) connects central shaft (3) bottom by swivel joint；The colvent inlet pipeline
(2) carbon dioxide inlet duct (1) is connected by valve；The colvent inlet pipeline is provided with heating unit (9).
Cleaning Concentration Testing probe (6) is provided with the top of the impeller.
Further, the central shaft described in above-mentioned technical proposal (3) is connected by gear or conveyer belt with motor (7)
Connect.
Before cleaning, a cleaning device and dyestuff kettle, dyeing caldron or separating still link are first had to, the carbon dioxide in gas cylinder leads to
Heater heating is crossed, then is cooled down through condenser, become storage in liquid in carbon dioxide recycle tank.After cleaning starts, circulation
In tank, the carbon dioxide of liquid is cooled down by condenser first, then reaches supercritical state by high-pressure pump pressurization, heat exchanger heating
State.After supercritical carbon dioxide fluid enters kettle, fluid Jing carbon dioxide entrance enters central shaft and leading screw；Cleaning solvent enters
Enter colvent inlet, and gaseous state is converted into by heating unit and be sufficiently mixed with CO 2 fluid.Actuating motor, centre axis
Dynamic leading screw and impeller do high speed rotary motion, and now, CO 2 fluid is sprayed into kettle by the double duct on blade
Wall, realizes cleaning process.By adjusting center rotating speed, centrifugal force is continuously increased, the fluid of ejection can be improved to kettle wall
Impulsive force, and then improve cleaning performance.Meanwhile, at impeller central, after being ejected due to fluid under the influence of centrifugal force
Form vacuum, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, so as to define fluid into flow out
Cyclic process, reduces energy expenditure.Meanwhile, while impeller rotates, central shaft is vertically transported by screw thread with leading screw
It is dynamic, such that it is able to make fluid complete the cleaning operation of whole kettle.In addition, during cleaning, the cleaning of impeller upper end is dense
Degree detection probe can clean state with real-time detection, when fluid concentrations are cleaned less than 5%, show to reach cleaning standard, clearly
Wash work to be automatically stopped；When fluid concentrations are more than 5%, show that cleaning is not yet completed, cleaning device may proceed to cleaning, until
Till reaching cleaning standard.After cleaning terminates, in separating still, supercritical carbon dioxide fluid, cleaning solvent and residual dye
Separated, after carbon dioxide gasification, Jing condensers are by pure carbon dioxide recovery to carbon dioxide holding tank.
The cleaning device of the supercritical CO 2 dyeing equipment of the present invention is applicable to dyestuff kettle, dyeing caldron and separating still
Etc. the cleaning of various kettlies.
Further, in above-mentioned technical proposal, inlet blade angle, the angle of outlet are less than 90 °.Inlet blade angle：Entrance
Vane airfoil profile slip tangent line and circumferencial direction angle；The angle of outlet：The tangent line of water outlet and the angle of circumferencial direction.
Every blade outer rim is provided with double-row hole；Blade duct pore size is 0.5-2mm, and pitch of holes is 0.5mm.
Further, in above-mentioned technical proposal, the impeller upper end is provided with cleaning Concentration Testing probe, it is possible to achieve clear
Wash the real-time detection of state.After the requirement of cleaning standard is reached, cleaning is automatically stopped.
Another object of the present invention is to provide supercritical CO 2 dyeing apparatus cleaning method, and the cleaning condition is
50-100 DEG C, 10-25MPa, carry out automatic detection while cleaning, scavenging period is generally 20-60min.
The cleaning process is made up of the cleaning of critical component kettle and tubing cleaning.
Further, in above-mentioned technical proposal, the cleaning solvent is ethanol, methanol, water.Cleaning solvent consumption is two
The 0.5-5% of carbonoxide gross mass.
After cleaning, equipment meets Chinese name republic chemical industry standard GB/T 25146-2010《Industrial equipment chemistry
Cleaning quality acceptance specification》.After cleaning, its clean rate can reach more than 95%, and corrosion-free to equipment.
Invention beneficial effect
1st, invention supercritical CO 2 dyeing equipment cleaning device and cleaning method, using CO 2 fluid with
Cleaning solvent is cleaned to kettle, the corrosion-free damage of cleaning process, and carbon dioxide is recyclable to be used again, meets sending out for low-carbon economy
Exhibition is required；
2nd, invention supercritical CO 2 dyeing equipment cleaning device and cleaning method, can according to cleaning needs,
Directly cleaning device is put in kettle and is cleaned, it is simple to operation, it is applicable to dyestuff kettle, dyeing caldron and separating still
Etc. the cleaning process of various kettlies；
3rd, the cleaning device and cleaning method of the supercritical CO 2 dyeing equipment of invention, its impeller upper end is provided with cleaning
Concentration Testing is popped one's head in, can be with real-time detection cleaning performance, and device is intelligent higher, meets industrialization production requirements.
Description of the drawings
4 width of accompanying drawing of the present invention,
Fig. 1 is cleaning device and kettle structure schematic diagram；
Fig. 2 is blade wheel structure schematic diagram；
Fig. 3 is impeller top view；
Fig. 4 is blade duct schematic diagram；
In figure, 1, carbon dioxide inlet duct；2nd, colvent inlet pipeline；3rd, central shaft；4th, impeller；5th, blade；6th, clean
Concentration Testing is popped one's head in；7th, motor；8th, screw mandrel；9th, heating unit；10th, blade duct；11st, swivel joint；12nd, valve.
Specific embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Embodiment 1
As shown in figure 1, in a kind of supercritical CO 2 dyeing equipment kettle cleaning device, including carbon dioxide entrance
Pipeline 1, colvent inlet pipeline 2, central shaft 3, impeller 4, cleaning Concentration Testing probe 6, motor 7, leading screw 8, heating unit 9.
Wherein, hollow structure of the central shaft 3 for both ends open；Inside central shaft 3 and it is provided with what is be mutually matched outside leading screw 8
Screw thread；Central shaft 3 and leading screw 8 are attached by screw thread；Impeller 4 is connected by pore at the top of leading screw 8, leading screw 8 is hollow knot
Structure；As shown in Figure 2,3, impeller 4 is hollow, double suction, open architecture；Impeller 4 is provided with 6 blades 5；Blade 5 is swept-back, wing
Type, hollow structure, as shown in Figure 4,5 outer rim of blade are provided with blade duct 10, and blade duct is double duct.
Motor 7 is connected by gear in the middle part of central shaft 3.
Carbon dioxide inlet duct 1 is connected 3 bottom of central shaft, colvent inlet pipeline 2 by swivel joint and is connected by valve
Connect carbon dioxide inlet duct 1；Colvent inlet pipeline is provided with heating unit 9.
Cleaning Concentration Testing probe 6 is provided with the top of impeller.
With reference to accompanying drawing 1, cleaning device and the cleaning of supercritical CO 2 dyeing equipment of the present invention are described in detail
The specific embodiment of method, its workflow are as follows：
Before cleaning, first have to connection leading screw impeller be put in dyestuff kettle, the screw mandrel in cleaning device by rotation with
Kettle outside hub axle is attached.Carbon dioxide in gas cylinder is heated by heater, then is cooled down through condenser, becomes liquid
State is stored in carbon dioxide recycle tank.
Cleaning starts, and in carbon dioxide holding tank, the carbon dioxide of liquid is cooled down by condenser first, then by high pressure
Pump is pressurized to 18MPa, is then heated to 70 DEG C through heat exchanger, and at this moment carbon dioxide is supercriticality.Supercritical titanium dioxide
After carbon flow body enters kettle, fluid Jing carbon dioxide inlet ducts sequentially enter central shaft, leading screw, impeller；Cleaning solvent is entered
Colvent inlet, and gaseous state is converted into by heating unit is sufficiently mixed with CO 2 fluid.Actuating motor, central shaft drive
Leading screw, impeller and fluid do high speed rotary motion, and now, CO 2 fluid is sprayed to dyestuff by the blade duct on blade
The inner wall of kettle of kettle, realizes cleaning process.By adjusting center rotating speed, centrifugal force is continuously increased, the stream of ejection can be improved
Impulsive force of the body to kettle wall, and then improve cleaning performance.Meanwhile, at impeller central, due to fluid under the influence of centrifugal force
Vacuum is formed after being ejected, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, enters so as to define fluid
The cyclic process for entering and flowing out, reduces energy expenditure.Meanwhile, while impeller rotates, central shaft acts on lower band in leading screw
Movable vane wheel carries out vertical motion, such that it is able to make fluid complete the cleaning operation of whole kettle.At this moment cleaning path includes key
Device clean cycle and tubing global cycle.During cleaning, the cleaning Concentration Testing probe of impeller upper end can be real
When detect cleaning state, when clean fluid concentrations be less than 5% when, show to reach cleaning standard, cleaning is automatically stopped；When
When fluid concentrations are more than 5%, show that cleaning is not yet completed, cleaning device may proceed to cleaning, till reaching cleaning standard.
After cleaning terminates, the supercritical carbon dioxide fluid for completing to clean is decompressed to 3-3.3MPa, and Jing heat exchangers are cooled to
After 30-35 DEG C, in separating still, supercritical carbon dioxide fluid, cleaning solvent are separated with residual dye, carbon dioxide gass
After change, Jing condensers are by pure carbon dioxide recovery to carbon dioxide holding tank.
Embodiment 2
Describe in detail supercritical CO 2 dyeing equipment of the present invention cleaning device and cleaning method it is concrete
Embodiment, its workflow are as follows：
Before cleaning, first have to cleaning device to be put in dyeing caldron, the carbon dioxide in gas cylinder is heated by heater, then
Cool down through condenser, become storage in liquid in carbon dioxide recycle tank.
Cleaning starts, and in circulating tank, the carbon dioxide of liquid is cooled down by condenser first, then is pressurized to by high-pressure pump
20MPa, is then heated to 90 DEG C through heat exchanger, and at this moment carbon dioxide is supercriticality.Supercritical carbon dioxide fluid enters
After entering kettle, fluid Jing carbon dioxide inlet ducts sequentially enter central shaft, screw mandrel, impeller；Cleaning solvent enters colvent inlet,
And gaseous state is converted into by heating unit is sufficiently mixed with CO 2 fluid.Actuating motor, central shaft drive leading screw, impeller
High speed rotary motion is done with fluid, now, CO 2 fluid sprays the kettle to dyeing caldron by the double duct on blade
Inwall, realizes cleaning process.By adjusting center rotating speed, centrifugal force is continuously increased, the fluid of ejection can be improved to kettle wall
Impulsive force, and then improve cleaning performance.Meanwhile, at impeller central, as fluid is ejected under the influence of centrifugal force
After form vacuum, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, so as to define fluid into outflow
Cyclic process, reduce energy expenditure.Meanwhile, while impeller rotates, leading screw impeller in the presence of central shaft
Vertical motion is carried out, such that it is able to make fluid complete the cleaning operation of whole kettle.At this moment cleaning path includes that key device is clear
Wash circulation and tubing global cycle.During cleaning, the cleaning Concentration Testing probe of impeller upper end can be with real-time detection
Cleaning state, when fluid concentrations are cleaned less than 5%, shows to reach cleaning standard, and cleaning is automatically stopped；When fluid it is dense
When degree is more than 5%, show that cleaning is not yet completed, cleaning device may proceed to cleaning, till reaching cleaning standard.
After cleaning terminates, the supercritical carbon dioxide fluid for completing to clean is decompressed to 3.1-3.5MPa, the cooling of Jing heat exchangers
To after 33-34 DEG C, in separating still, supercritical carbon dioxide fluid, cleaning solvent are separated with residual dye, carbon dioxide
After gasification, Jing condensers are by pure carbon dioxide recovery to carbon dioxide holding tank.
Claims (7)
1. in a kind of supercritical CO 2 dyeing equipment kettle cleaning device, it is characterised in that：Including carbon dioxide entrance
Pipeline（1）, colvent inlet pipeline（2）, central shaft（3）, impeller（4）, cleaning Concentration Testing probe（6）, motor（7）, leading screw
（8）, heating unit（9）；
Wherein, central shaft（3）For the hollow structure of both ends open；The central shaft（3）Internal and leading screw（8）Outside is provided with mutually
The screw thread of matching；The central shaft and leading screw are attached by screw thread；The leading screw（8）Top connects impeller by pore
（4）；The leading screw（8）For hollow structure；The impeller（4）For hollow, double suction, open architecture；The impeller（4）It is provided with 6
Blade（5）；The blade（5）For swept-back, airfoil type, hollow structure；The blade（5）Outer rim is provided with blade duct（10）,
The blade duct is double-row hole；
The central shaft（3）Middle part connection motor（7）；
Carbon dioxide inlet duct（1）Central shaft is connected by swivel joint（3）Bottom, the colvent inlet pipeline（2）Pass through
Valve connects carbon dioxide inlet duct（1）；The colvent inlet pipeline is provided with heating unit（9）；
Cleaning Concentration Testing probe is provided with the top of the impeller（6）.
2. cleaning device according to claim 1, it is characterised in that：Center axle rotary speed be 10-500r/min, impeller liter
Reduction of speed degree is 0.5-5m/min.
3. cleaning device according to claim 1, it is characterised in that：Inlet blade angle, the angle of outlet are less than 90 °；Blade duct
Pore size is 0.5-2mm, and pitch of holes is 0.5mm.
4. using the method for cleaning device cleaning dyestuff kettle or dyeing caldron or separating still described in claim 1-3 any one.
5. the method that cleaning device cleans dyestuff kettle or dyeing caldron or separating still according to claim 4, it is characterised in that：Clearly
Condition is washed for 50-100 DEG C, 10-25MPa, cleaning Concentration Testing probe while cleaning（6）Carry out automatic detection, scavenging period
For 20-60min.
6. the method that cleaning device cleans dyestuff kettle or dyeing caldron or separating still according to claim 5, it is characterised in that：Institute
Cleaning solvent is stated for ethanol, methanol, water.
7. the method that cleaning device cleans dyestuff kettle or dyeing caldron or separating still according to claim 6, it is characterised in that：Clearly
Wash the 0.5-5% that solvent load is carbon dioxide gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412465.2A CN105040335B (en) | 2015-07-14 | 2015-07-14 | Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412465.2A CN105040335B (en) | 2015-07-14 | 2015-07-14 | Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105040335A CN105040335A (en) | 2015-11-11 |
| CN105040335B true CN105040335B (en) | 2017-04-26 |
Family
ID=54447291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510412465.2A Active CN105040335B (en) | 2015-07-14 | 2015-07-14 | Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105040335B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417768A (en) * | 1993-12-14 | 1995-05-23 | Autoclave Engineers, Inc. | Method of cleaning workpiece with solvent and then with liquid carbon dioxide |
| CN102787463A (en) * | 2012-07-17 | 2012-11-21 | 大连工业大学 | Cleaning method for supercritical carbon dioxide dyeing equipment |
| CN103357338A (en) * | 2013-07-24 | 2013-10-23 | 浙江工业大学 | Electric mixer |
| CN204238024U (en) * | 2014-11-05 | 2015-04-01 | 绍兴永利环保科技有限公司 | The cylinder body high-efficiency washing device of airflow dyeing machine |
-
2015
- 2015-07-14 CN CN201510412465.2A patent/CN105040335B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417768A (en) * | 1993-12-14 | 1995-05-23 | Autoclave Engineers, Inc. | Method of cleaning workpiece with solvent and then with liquid carbon dioxide |
| CN102787463A (en) * | 2012-07-17 | 2012-11-21 | 大连工业大学 | Cleaning method for supercritical carbon dioxide dyeing equipment |
| CN103357338A (en) * | 2013-07-24 | 2013-10-23 | 浙江工业大学 | Electric mixer |
| CN204238024U (en) * | 2014-11-05 | 2015-04-01 | 绍兴永利环保科技有限公司 | The cylinder body high-efficiency washing device of airflow dyeing machine |
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| Publication number | Publication date |
|---|---|
| CN105040335A (en) | 2015-11-11 |
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