CA2248860C - Yankee hood with integral air heating system - Google Patents
Yankee hood with integral air heating system Download PDFInfo
- Publication number
- CA2248860C CA2248860C CA002248860A CA2248860A CA2248860C CA 2248860 C CA2248860 C CA 2248860C CA 002248860 A CA002248860 A CA 002248860A CA 2248860 A CA2248860 A CA 2248860A CA 2248860 C CA2248860 C CA 2248860C
- Authority
- CA
- Canada
- Prior art keywords
- hood
- air
- enclosure
- profiling
- yankee
- 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 - Lifetime
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
- D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/20—Waste heat recovery
Abstract
A Yankee hood comprises an integral air heating system combining the hood wi th circulating fans, air heaters and an air flow duct work distribution system into one assembly with the air system apparatus located inside the hood. Motors for circulating fans and the burner assemblies are mounted on the external face of the hood drive side.
Description
Y~N~12 HOOD WITEI ~ T- AIR 8EATING
FIELD OF THE lNv~ ON
This invention relates to paper drying systems and specifically to a Yankee hood having an integral air heating system.
BACKGRO~lND OF THE INVENTION
Yankee hood systems are used extensively in the manufacture of tissue by the paper industry.
Conventionally, the Yankee hood systems have their air processing arrangements located externally of the hood, usually on a mezzanine floor or platform to take advantage of large spaces that are required to install combustion air heaters, circulating fans, their motors and the interconnecting duct work. Such a conventional arrangement would have an air processing system - consisting of supply or circulating fans, exhaust fan~, combustion chambers and blowers, a burner system and a fuel train all arranged outwardly of the Yankee hood and interconnected with the hood structure through suitable duct work.
Large amounts of capital investment are required to engineer and construct a mezzanine floor, equipment foundations and burner room to enclose air heaters and duct work systems. Similarly, large amounts of capital investment are required also to design and build the necessary external air flow duct work distribution W097/3~S PCT/CA97~0112 systems. Duct work pressure losses between the apparatus and the hood contributes to additional electrical energy consumed by the circulating fans of the air circulation system and this additional energy constitutes upwards of 15 to 20~ of the total electrical energy consumed by these fans. As an example, a medium sized Yankee hood system may consume up to 400 kw/hour.
The present invention addresses the shortcomings of conventional Yankee hood arrangements with external air heating systems by providing a high performance Yankee hood incorporating an integral air heating system thus combining the hood with circulating fans, air heaters and air flow duct work distribution systems into a single assembly with the air system apparatus located inside the hood.
PRIOR ART
Canadian Patent 677,083 of December 31, 1963 relates to a method and apparatus for drying a web-like material by supplying a gaseous treatment medium to the web in the form of jets being caused to impinge substantially perpendicularly against the surface of the web. The jets are evenly distributed over the entire surface of the web to be treated and the drying medium is discharged from the web at a number of exhaustion points so that the medium is forced to flow along the web from all directions radially towards the exhaustion points.
~n~; an Patent 713,765 of July 20, 1965 discloses a compact unit including a distribution system within the confines of one enclosure.
Canadian Patent 795,026 of September 24, 1968 discloses a compact dryer where the plenum chamber serves slmultaneously as a com~us. sn anc mi.YirS
cham'~e~
u.S. Patent 5,415,979 of ~lav 23, 1995 discloses 2 paper weD dryer and mois.u-e p~o~iling system w'r.er2 a s plurality of gas burners are indiviaually loca-ec in each of the nozzle box interiors and are arranged sice-by-side alons the lensth of the nozzle box interiors to produce the hot combustion gases for c~ying.
Other examples of the prior art are to ~e founa in U.S. Patents 3,163,502 December 29, 1~64; 5,112,220 ~ay 12, 1992; 4,743,419 May 10, 1988; 4,168,580 September 25, 1979, this arrangement showins a drying installation for a paper web including a drying hocc having flow channels, heat sources and blowers for circulation of drying medium; ~,0~g,637 December ,7, L977; 3,391,500 June 24, 1975; 4,656,759 April 14, 1987; ~,567,673 rebruary 4, 1986; 4,462,169 Jul~ 31, ~5 and 3,167,~08 of January 26, 'S95.
While some of the above listed specifications a-e directed to apparatus for increasing efficiency in we~
drying processes, they do not disclose the assembly cf elements and combination of features found in the present invention.
SUMMARY OF THE INVENTION
According to a broaa aspect, the invention relGtes to a Yankee hood assembly having an integral ai~
heating and distribution system. The assembly comprises a Yankee hood enclosure which is adapted to envelope a portion of a dryer cylinder, the hood enclosure having a wet end and a dry end. A plurality of internal moisture pro iling sections are arranged across the inner operati~;e face of the hood er.closur-and mois~ure profil~nc heGce~s ocatec ir-er-~ c A~EI~D~3S'~!~ET
~ ~ ,.. ..
the hood enclosure are provided for feeding air to the profiling sections. Air circulating fans are mounted inside of the hood enclosure, one in each half thereof, and an internal combustion system is located downstream of each circulating fan and intermediate the fan and the air distribution system.
BRIEF DESCRIPTION OF T~E DRAWINGS
The invention is illustrated by way of example in the acc~r~nying drawings in which:
FIGURE 1 is a perspective view of a conventional Yankee hood arrangement illustrating the associated air heating system;
FIGURE 2 is an isometric view of the present invention in conceptual form;
FIGURE 3 is an elevation view of a Yankee hood arrangement according to the invention;
FIGURE 4 is a plan view of the arrangement shown in Figure 3; and FIGURE 5 is a side view of the arrangement shown in Figure 3.
DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to Figure 1, a commonly used Yankee hood system is illustrated. The Yankee hood enclosure 1 is connected to an external air heating system located on a mezzanine floor 2 adjacent the Yan~ee hood and its associated drying cylinder. This conventional system includes a pair of air supply or circulating fans 3, combustion chambers 4, a fuel train illustrated generally at 5, a burner control panel 6, combustion blowers 7 and burner systems 8 associated with the combustion chambers 4. Suitable motor means 9 are located to drive the supply fans 3.
W097/3~45 PCT/CAg7/~112 The air heating and blower elements are interconnected with the Yankee hood structure by way of a plurality of ducts 10. It will be noted that the mezzanine 2 takes up a large amount of space in order to locate the combustion air heaters, circulating fans, motors and the circulating fans together with the interconnecting duct work etc.
With reference to Figure 2, a Yankee hood 12 according to the invention comprises an integral air heating system to thereby combine the hood with circulating fans, air heaters and air flow duct work with the air system apparatus located within the confines of the hood envelope illustrated at 14. The envelope encloses the air circulating fan 16, the air heater assembly 18 and the air distribution system 20.
The air circulating fans and heater assembly are located adjacent the drive side 22 of the hood.
The invention is shown in greater detail in Figures 3, 4 and 5. The Yankee hood 12 with the integral air heating system includes the Yankee hood envelope 14 positioned around a drying cylinder 24 located on a suitable foundation 13 supporting a floor 15 on which the dryer cylinder bearings 17 are located.
The Yankee hood envelope 14 is subdivided into left and right halves 19 and 21 and would include suitable means for moving those halves for servicing purposes. The hood 14 is positioned on steel hood supports 23, 25.
As shown in Figure 3, the air circulating fans 16 are located in the upper ends of the drive side of the hood with the burners 18 being located adjacent the fans. The air flow equalizing chamber assembly consist~
of two key components, the combustion chamber~ 26 and the profiling headers 28. The function of the assembly is to provide the profiling sections 20 with even air W097/36045 PCT/CAg7/00112 flow and temperature distribution in the cross-machine direction, from the tending side to the drive side.
The internal combustion process takes place in the combustion chambers 26, producing an air flow that is mixed to obtain an even temperature at its end before entering the profiling headers. Temperature mixing is achieved using mixing devices that are located within the chambers.
The profiling headers 28 with its envelope separate from the combustion chamber 26 produces an even exit air flow to each profiling section 20. The individual air flow volumes prior to exiting the headers are equalized using static pressure drop devices and flow adjustment profiling dampers 30. The internal combustion chambers 26 extend across the internal width of the hood envelope as shown in Figure 4 adjacent the internal moisture profiling header 28 provided with a series of air dampers 30. The profiling headers feed the drying medium into the moisture profiling sections 20 and these sections 20 are arranged across the inner operative face of the hood enclosure.
Dampers 30 associated with the air profiling sections 20 provide air flow quantity adjustments prior to discharge of the air on to a paper web located on the drying cylinder 24.
As shown in Figure 4, the motor means for driving the fans 16 are in the form of electric motors 32 located externally of the hood on the drive side thereof. Air exhaust openings 34 are provided on the top of the hood envelope as shown in Figure 4. The wet end half of the hood will be connected with the dry end half to provide air cascading for greater energy efficiency.
W097/3~45 PCT/CA97100112 It will be noted from Figure 4 that the perimeter frame 25 requires substantially less space to support the hood arrangement according to the invention than that disclosed in the prior art arrangement of Figure l.
With the internal combustion system located on the downstream side of the circulating fans 16, both elements of which are installed inside the envelope with one fan and one burner per hood half, and with the hood having a paper web cross machine moisture profiling capability together with the air profiling sections and dampers to allow for air flow quantity adjustment prior to discharge on to the paper web, this arrangement according to the invention provides a high performance Yankee hood for use in the paper industry.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims.
The terms and expressions which have been employed in this specification are used as terms of description and not of limitations, and there is no intention in the use of such terms and expressions to exclude any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the invention claims.
FIELD OF THE lNv~ ON
This invention relates to paper drying systems and specifically to a Yankee hood having an integral air heating system.
BACKGRO~lND OF THE INVENTION
Yankee hood systems are used extensively in the manufacture of tissue by the paper industry.
Conventionally, the Yankee hood systems have their air processing arrangements located externally of the hood, usually on a mezzanine floor or platform to take advantage of large spaces that are required to install combustion air heaters, circulating fans, their motors and the interconnecting duct work. Such a conventional arrangement would have an air processing system - consisting of supply or circulating fans, exhaust fan~, combustion chambers and blowers, a burner system and a fuel train all arranged outwardly of the Yankee hood and interconnected with the hood structure through suitable duct work.
Large amounts of capital investment are required to engineer and construct a mezzanine floor, equipment foundations and burner room to enclose air heaters and duct work systems. Similarly, large amounts of capital investment are required also to design and build the necessary external air flow duct work distribution W097/3~S PCT/CA97~0112 systems. Duct work pressure losses between the apparatus and the hood contributes to additional electrical energy consumed by the circulating fans of the air circulation system and this additional energy constitutes upwards of 15 to 20~ of the total electrical energy consumed by these fans. As an example, a medium sized Yankee hood system may consume up to 400 kw/hour.
The present invention addresses the shortcomings of conventional Yankee hood arrangements with external air heating systems by providing a high performance Yankee hood incorporating an integral air heating system thus combining the hood with circulating fans, air heaters and air flow duct work distribution systems into a single assembly with the air system apparatus located inside the hood.
PRIOR ART
Canadian Patent 677,083 of December 31, 1963 relates to a method and apparatus for drying a web-like material by supplying a gaseous treatment medium to the web in the form of jets being caused to impinge substantially perpendicularly against the surface of the web. The jets are evenly distributed over the entire surface of the web to be treated and the drying medium is discharged from the web at a number of exhaustion points so that the medium is forced to flow along the web from all directions radially towards the exhaustion points.
~n~; an Patent 713,765 of July 20, 1965 discloses a compact unit including a distribution system within the confines of one enclosure.
Canadian Patent 795,026 of September 24, 1968 discloses a compact dryer where the plenum chamber serves slmultaneously as a com~us. sn anc mi.YirS
cham'~e~
u.S. Patent 5,415,979 of ~lav 23, 1995 discloses 2 paper weD dryer and mois.u-e p~o~iling system w'r.er2 a s plurality of gas burners are indiviaually loca-ec in each of the nozzle box interiors and are arranged sice-by-side alons the lensth of the nozzle box interiors to produce the hot combustion gases for c~ying.
Other examples of the prior art are to ~e founa in U.S. Patents 3,163,502 December 29, 1~64; 5,112,220 ~ay 12, 1992; 4,743,419 May 10, 1988; 4,168,580 September 25, 1979, this arrangement showins a drying installation for a paper web including a drying hocc having flow channels, heat sources and blowers for circulation of drying medium; ~,0~g,637 December ,7, L977; 3,391,500 June 24, 1975; 4,656,759 April 14, 1987; ~,567,673 rebruary 4, 1986; 4,462,169 Jul~ 31, ~5 and 3,167,~08 of January 26, 'S95.
While some of the above listed specifications a-e directed to apparatus for increasing efficiency in we~
drying processes, they do not disclose the assembly cf elements and combination of features found in the present invention.
SUMMARY OF THE INVENTION
According to a broaa aspect, the invention relGtes to a Yankee hood assembly having an integral ai~
heating and distribution system. The assembly comprises a Yankee hood enclosure which is adapted to envelope a portion of a dryer cylinder, the hood enclosure having a wet end and a dry end. A plurality of internal moisture pro iling sections are arranged across the inner operati~;e face of the hood er.closur-and mois~ure profil~nc heGce~s ocatec ir-er-~ c A~EI~D~3S'~!~ET
~ ~ ,.. ..
the hood enclosure are provided for feeding air to the profiling sections. Air circulating fans are mounted inside of the hood enclosure, one in each half thereof, and an internal combustion system is located downstream of each circulating fan and intermediate the fan and the air distribution system.
BRIEF DESCRIPTION OF T~E DRAWINGS
The invention is illustrated by way of example in the acc~r~nying drawings in which:
FIGURE 1 is a perspective view of a conventional Yankee hood arrangement illustrating the associated air heating system;
FIGURE 2 is an isometric view of the present invention in conceptual form;
FIGURE 3 is an elevation view of a Yankee hood arrangement according to the invention;
FIGURE 4 is a plan view of the arrangement shown in Figure 3; and FIGURE 5 is a side view of the arrangement shown in Figure 3.
DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to Figure 1, a commonly used Yankee hood system is illustrated. The Yankee hood enclosure 1 is connected to an external air heating system located on a mezzanine floor 2 adjacent the Yan~ee hood and its associated drying cylinder. This conventional system includes a pair of air supply or circulating fans 3, combustion chambers 4, a fuel train illustrated generally at 5, a burner control panel 6, combustion blowers 7 and burner systems 8 associated with the combustion chambers 4. Suitable motor means 9 are located to drive the supply fans 3.
W097/3~45 PCT/CAg7/~112 The air heating and blower elements are interconnected with the Yankee hood structure by way of a plurality of ducts 10. It will be noted that the mezzanine 2 takes up a large amount of space in order to locate the combustion air heaters, circulating fans, motors and the circulating fans together with the interconnecting duct work etc.
With reference to Figure 2, a Yankee hood 12 according to the invention comprises an integral air heating system to thereby combine the hood with circulating fans, air heaters and air flow duct work with the air system apparatus located within the confines of the hood envelope illustrated at 14. The envelope encloses the air circulating fan 16, the air heater assembly 18 and the air distribution system 20.
The air circulating fans and heater assembly are located adjacent the drive side 22 of the hood.
The invention is shown in greater detail in Figures 3, 4 and 5. The Yankee hood 12 with the integral air heating system includes the Yankee hood envelope 14 positioned around a drying cylinder 24 located on a suitable foundation 13 supporting a floor 15 on which the dryer cylinder bearings 17 are located.
The Yankee hood envelope 14 is subdivided into left and right halves 19 and 21 and would include suitable means for moving those halves for servicing purposes. The hood 14 is positioned on steel hood supports 23, 25.
As shown in Figure 3, the air circulating fans 16 are located in the upper ends of the drive side of the hood with the burners 18 being located adjacent the fans. The air flow equalizing chamber assembly consist~
of two key components, the combustion chamber~ 26 and the profiling headers 28. The function of the assembly is to provide the profiling sections 20 with even air W097/36045 PCT/CAg7/00112 flow and temperature distribution in the cross-machine direction, from the tending side to the drive side.
The internal combustion process takes place in the combustion chambers 26, producing an air flow that is mixed to obtain an even temperature at its end before entering the profiling headers. Temperature mixing is achieved using mixing devices that are located within the chambers.
The profiling headers 28 with its envelope separate from the combustion chamber 26 produces an even exit air flow to each profiling section 20. The individual air flow volumes prior to exiting the headers are equalized using static pressure drop devices and flow adjustment profiling dampers 30. The internal combustion chambers 26 extend across the internal width of the hood envelope as shown in Figure 4 adjacent the internal moisture profiling header 28 provided with a series of air dampers 30. The profiling headers feed the drying medium into the moisture profiling sections 20 and these sections 20 are arranged across the inner operative face of the hood enclosure.
Dampers 30 associated with the air profiling sections 20 provide air flow quantity adjustments prior to discharge of the air on to a paper web located on the drying cylinder 24.
As shown in Figure 4, the motor means for driving the fans 16 are in the form of electric motors 32 located externally of the hood on the drive side thereof. Air exhaust openings 34 are provided on the top of the hood envelope as shown in Figure 4. The wet end half of the hood will be connected with the dry end half to provide air cascading for greater energy efficiency.
W097/3~45 PCT/CA97100112 It will be noted from Figure 4 that the perimeter frame 25 requires substantially less space to support the hood arrangement according to the invention than that disclosed in the prior art arrangement of Figure l.
With the internal combustion system located on the downstream side of the circulating fans 16, both elements of which are installed inside the envelope with one fan and one burner per hood half, and with the hood having a paper web cross machine moisture profiling capability together with the air profiling sections and dampers to allow for air flow quantity adjustment prior to discharge on to the paper web, this arrangement according to the invention provides a high performance Yankee hood for use in the paper industry.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims.
The terms and expressions which have been employed in this specification are used as terms of description and not of limitations, and there is no intention in the use of such terms and expressions to exclude any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the invention claims.
Claims (6)
1. A Yankee hood assembly (12) comprising:
an enclosure (14) adapted to envelope a portion of a dryer cylinder (24), said hood enclosure having two halves (19,21), a wet end and a dry end;
characterized in that the hood assembly (12) has an integral air heating and distribution system including a plurality of internal moisture profiling sections (20) arranged across the inner operative face of each half of said hood enclosure;
dampers (30) associated with said air profiling sections to provide air flow quantity adjustment prior to discharge of said air onto a paper web on said drying cylinder;
moisture profiling headers (28) located internally of the hood enclosure for feeding air to said profiling sections (20);
each half (19,21) of said Yankee hood enclosure incorporating (a) a single air circulating fan (16) mounted internally thereof; and (b) an internal combustion system (18,,26) located downstream of said single circulating fan and intermediate said fan and the air distribution system (20).
an enclosure (14) adapted to envelope a portion of a dryer cylinder (24), said hood enclosure having two halves (19,21), a wet end and a dry end;
characterized in that the hood assembly (12) has an integral air heating and distribution system including a plurality of internal moisture profiling sections (20) arranged across the inner operative face of each half of said hood enclosure;
dampers (30) associated with said air profiling sections to provide air flow quantity adjustment prior to discharge of said air onto a paper web on said drying cylinder;
moisture profiling headers (28) located internally of the hood enclosure for feeding air to said profiling sections (20);
each half (19,21) of said Yankee hood enclosure incorporating (a) a single air circulating fan (16) mounted internally thereof; and (b) an internal combustion system (18,,26) located downstream of said single circulating fan and intermediate said fan and the air distribution system (20).
2. A hood according to claim 1 including motor means (32) located externally of said hood (14) for driving said circulating fans (16) located internally of said hood.
3. A hood according to claim 1 wherein said wet end and said dry end of the hood are interconnected to provide air cascading for greater energy efficiency.
4. A Yankee hood assembly comprising a hood enclosure adapted to envelope a portion of a dryer cylinder, said hood enclosure having two halves, a wet end half and a dry end half, said hood assembly having an integral air heating and distribution system including:
a plurality of internal moisture profiling sections arranged across the inner operative face of each half of said hood enclosure;
dampers associated with said profiling sections to provide air flow quantity adjustment prior to discharge of said air onto a paper web on said drying cylinder;
a moisture profiling header located internally of each half of said hood enclosure for feeding air to said profiling sections;
each half of said hood enclosure incorporating (a) a single air circulating fan mounted internally thereof;
and (b? an internal combustion system located downstream of said single air circulating fan and intermediate said fan and said profiling header.
a plurality of internal moisture profiling sections arranged across the inner operative face of each half of said hood enclosure;
dampers associated with said profiling sections to provide air flow quantity adjustment prior to discharge of said air onto a paper web on said drying cylinder;
a moisture profiling header located internally of each half of said hood enclosure for feeding air to said profiling sections;
each half of said hood enclosure incorporating (a) a single air circulating fan mounted internally thereof;
and (b? an internal combustion system located downstream of said single air circulating fan and intermediate said fan and said profiling header.
5. A hood according to claim 4 including motor means located externally of said hood for driving said circulating fans located internally of said hood.
6. A hood according to claim 4 wherein said wet end half and said dry end half of the hood are interconnected to provide air cascading for greater energy efficiency.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/621,482 US5784804A (en) | 1996-03-25 | 1996-03-25 | Yankee hood with integral air heating system |
| US08/621,482 | 1996-03-25 | ||
| PCT/US1997/000112 WO1997024512A1 (en) | 1996-01-02 | 1997-01-02 | Surge recurrence prevention control system for dynamic compressors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2248860A1 CA2248860A1 (en) | 1997-10-02 |
| CA2248860C true CA2248860C (en) | 2003-02-04 |
Family
ID=24490343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002248860A Expired - Lifetime CA2248860C (en) | 1996-03-25 | 1997-02-19 | Yankee hood with integral air heating system |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5784804A (en) |
| EP (1) | EP0891440B1 (en) |
| JP (1) | JP3831765B2 (en) |
| CN (1) | CN1117901C (en) |
| AT (1) | ATE211196T1 (en) |
| AU (1) | AU1715097A (en) |
| BR (1) | BR9708354A (en) |
| CA (1) | CA2248860C (en) |
| DE (1) | DE69709327T2 (en) |
| ES (1) | ES2169352T3 (en) |
| HK (1) | HK1019348A1 (en) |
| WO (1) | WO1997036045A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2216591C (en) * | 1997-09-24 | 2004-05-11 | Asea Brown Boveri Inc. | High temperature yankee hood |
| DE69910578T2 (en) * | 1998-07-01 | 2004-06-24 | Institute Of Paper Science And Technology, Inc. | METHOD FOR REMOVING WATER FROM FIBROUS CARBINS WITH OSCILLATING PRELIMINARY FLOW REVERSE |
| US6079116A (en) * | 1998-11-06 | 2000-06-27 | Valmet-Karlstad Ab | Duct configuration for a through-air drying apparatus in a papermaking machine |
| CA2300839A1 (en) * | 2000-03-17 | 2001-09-17 | Asea Brown Boveri Inc. | Thermal equalizer |
| US6631566B2 (en) * | 2000-09-18 | 2003-10-14 | Kimberly-Clark Worldwide, Inc. | Method of drying a web |
| US6964117B2 (en) * | 2002-12-20 | 2005-11-15 | Metso Paper Usa, Inc. | Method and apparatus for adjusting a moisture profile in a web |
| AT412484B (en) * | 2003-04-29 | 2005-03-25 | Andritz Ag Maschf | DEVICE FOR DRYING A PAPER TRACK |
| US7448147B2 (en) * | 2004-11-22 | 2008-11-11 | Metso Paper Usa, Inc. | Nozzle insert for a Yankee impingement hood |
| US8176650B2 (en) * | 2005-12-13 | 2012-05-15 | Kimberly-Clark Worldwide, Inc. | Method for warming up or cooling down a through-air dryer |
| US8021518B2 (en) * | 2006-11-30 | 2011-09-20 | Nalco Company | Method of applying a super-absorbent composition to tissue or towel substrates |
| CN102733242B (en) * | 2011-04-10 | 2015-02-11 | 上海东冠纸业有限公司 | Air blowing device for dryer air cover |
| EP2775030B1 (en) | 2013-03-06 | 2015-09-09 | Valmet S.p.A. | An arrangement for drying a tissue paper web and a method for recapturing steam during drying of a tissue paper web |
| ITMI20130775A1 (en) * | 2013-05-10 | 2014-11-11 | Novimpianti Drying Technology S R L | COMBUSTION SYSTEM AND METHOD FOR HEATING THE PROCESS AIR FOR PAPER DRYING SYSTEMS |
| WO2015007482A1 (en) * | 2013-07-16 | 2015-01-22 | Voith Patent Gmbh | Drying hood |
| EP2963176B1 (en) | 2015-04-23 | 2017-03-15 | Valmet S.p.A. | A yankee drying hood arrangement, a yankee drying cylinder fitted with a yankee drying hood arrangement and a method of drying a fibrous web |
| ES2936273T3 (en) | 2019-01-15 | 2023-03-15 | Valmet Oy | A Yankee drying hood arrangement, a Yankee drying cylinder equipped with a Yankee drying hood arrangement, and a method for drying a fibrous web |
| US11662142B2 (en) * | 2021-04-06 | 2023-05-30 | Cmpc Tissue S.A. | System for reheating air in dryers |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA713765A (en) * | 1965-07-20 | Wallin Sven | Device in cylinder machines for paper or the like | |
| CA795026A (en) * | 1968-09-24 | Aktiebolaget Svenska Flaktfabriken | Drying apparatus | |
| CA677083A (en) * | 1963-12-31 | Aktiebolaget Svenska Flaktfabriken | Gaseous drying of web material | |
| US3163502A (en) * | 1960-10-13 | 1964-12-29 | Beloit Corp | Removable hood for a drying cylinder |
| US3167408A (en) * | 1961-11-16 | 1965-01-26 | Beloit Corp | Dryer hood construction for web material |
| SE342273B (en) * | 1965-09-23 | 1972-01-31 | Svenska Flaektfabriken Ab | |
| US3793741A (en) * | 1972-01-07 | 1974-02-26 | Smitherm Industries | Drying apparatus with moisture profile control |
| FI50721C (en) * | 1972-03-29 | 1976-06-10 | Valmet Oy | Tissue paper machine. |
| AT316298B (en) * | 1972-06-02 | 1974-07-10 | Andritz Ag Maschf | Drying system for the treatment of material webs |
| SE396627B (en) * | 1975-03-19 | 1977-09-26 | Svenska Flaektfabriken Ab | CYLINDER DRYER FOR PAPER MAKING MACHINE |
| US4462169A (en) * | 1982-02-19 | 1984-07-31 | W. R. Grace & Company | Web dryer solvent vapor control means |
| DE3324130C2 (en) * | 1983-07-05 | 1986-04-10 | Franz 4834 Harsewinkel Böhnensieker | Method and device for drying printed or dyed material webs |
| JPS6117885A (en) * | 1984-07-03 | 1986-01-25 | 株式会社 大和三光製作所 | Ventilation type rotary drier |
| US4743419A (en) * | 1985-03-04 | 1988-05-10 | The Dow Chemical Company | On-line film fluorination method |
| FI79156C (en) * | 1988-03-08 | 1989-11-10 | Valmet Paper Machinery Inc | Procedure in an integrated IR dryer / yankee cover and IR dryer / yankee cover. |
| US5112220A (en) * | 1988-06-07 | 1992-05-12 | W. R. Grace & Co.-Conn. | Air flotation dryer with built-in afterburner |
| US5303484A (en) * | 1992-04-09 | 1994-04-19 | Thermo Electron Web Systems, Inc. | Compact convective web dryer |
| US5465504A (en) * | 1994-04-08 | 1995-11-14 | James River Paper Company, Inc. | System for modifying the moisture profile of a paper web |
| US5416979A (en) * | 1994-04-11 | 1995-05-23 | James River Paper Company, Inc. | Paper web dryer and paper moisture profiling system |
-
1996
- 1996-03-25 US US08/621,482 patent/US5784804A/en not_active Expired - Lifetime
-
1997
- 1997-02-19 EP EP97904320A patent/EP0891440B1/en not_active Expired - Lifetime
- 1997-02-19 ES ES97904320T patent/ES2169352T3/en not_active Expired - Lifetime
- 1997-02-19 DE DE69709327T patent/DE69709327T2/en not_active Expired - Lifetime
- 1997-02-19 AU AU17150/97A patent/AU1715097A/en not_active Abandoned
- 1997-02-19 JP JP53388197A patent/JP3831765B2/en not_active Expired - Lifetime
- 1997-02-19 CA CA002248860A patent/CA2248860C/en not_active Expired - Lifetime
- 1997-02-19 WO PCT/CA1997/000112 patent/WO1997036045A1/en active IP Right Grant
- 1997-02-19 BR BR9708354-2A patent/BR9708354A/en not_active IP Right Cessation
- 1997-02-19 CN CN97193284.0A patent/CN1117901C/en not_active Expired - Fee Related
- 1997-02-19 AT AT97904320T patent/ATE211196T1/en not_active IP Right Cessation
-
1999
- 1999-10-07 HK HK99104373A patent/HK1019348A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69709327T2 (en) | 2002-08-14 |
| ES2169352T3 (en) | 2002-07-01 |
| DE69709327D1 (en) | 2002-01-31 |
| JP2000507313A (en) | 2000-06-13 |
| WO1997036045A1 (en) | 1997-10-02 |
| EP0891440B1 (en) | 2001-12-19 |
| AU1715097A (en) | 1997-10-17 |
| HK1019348A1 (en) | 2000-02-03 |
| CA2248860A1 (en) | 1997-10-02 |
| ATE211196T1 (en) | 2002-01-15 |
| BR9708354A (en) | 2000-01-04 |
| CN1214749A (en) | 1999-04-21 |
| US5784804A (en) | 1998-07-28 |
| CN1117901C (en) | 2003-08-13 |
| EP0891440A1 (en) | 1999-01-20 |
| JP3831765B2 (en) | 2006-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2248860C (en) | Yankee hood with integral air heating system | |
| US4936025A (en) | Combination infrared and airborne drying of a web | |
| CA2093066C (en) | Compact convective web dryer | |
| EP1105566B1 (en) | Method and apparatus for improving the drying capacity of a hood covering a yankee cylinder | |
| US5937538A (en) | Through air dryer apparatus for drying webs | |
| EP0704043A1 (en) | Apparatus for drying a wet paper web during manufacture of the paper web | |
| CA2078290A1 (en) | Combination infrared and air flotation dryer | |
| JP2005503279A (en) | Equipment for drying plaster plasterboard | |
| EP1588112B1 (en) | Method and apparatus for adjusting a moisture profile in a web | |
| EP1266084B1 (en) | Method and drying section for arranging exhaust air and supply air in a drying section | |
| FI119153B (en) | End portion of an air dryer, air dryer, procedure in the end portion of an air dryer and use of a fan | |
| EP0808942A2 (en) | Apparatus and method for drying a wet web and modifying the moisture profile thereof | |
| US6079115A (en) | High temperature Yankee hood | |
| MXPA98007732A (en) | Yanqui hood with integral heating system of a | |
| JP3602921B2 (en) | Hollow wood drying equipment | |
| CA2286603C (en) | Open burner plenum for a flotation dryer | |
| CN217442172U (en) | Hot air cross circulation type film drying machine | |
| RU2177703C1 (en) | Tobacco leaves drying apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20170220 |