GB1583199A - Cloth drying apparatus - Google Patents

Cloth drying apparatus Download PDF

Info

Publication number
GB1583199A
GB1583199A GB5014077A GB5014077A GB1583199A GB 1583199 A GB1583199 A GB 1583199A GB 5014077 A GB5014077 A GB 5014077A GB 5014077 A GB5014077 A GB 5014077A GB 1583199 A GB1583199 A GB 1583199A
Authority
GB
United Kingdom
Prior art keywords
air
burner
circulating
cloth
exhaust gas
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
Application number
GB5014077A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WHITELEY Ltd E GORDON
Original Assignee
WHITELEY Ltd E GORDON
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WHITELEY Ltd E GORDON filed Critical WHITELEY Ltd E GORDON
Priority to GB5014077A priority Critical patent/GB1583199A/en
Publication of GB1583199A publication Critical patent/GB1583199A/en
Application status is Expired legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/02Heating arrangements using combustion heating
    • F26B23/022Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure

Description

(54) IMPROVEMENTS IN CLOTH DRYING APPARATUS (71) We, E. GORDON WHITELEY LIMITED, of Beech Works, Morley, Leeds LS27 ONL, a British Company, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement: When cloth is dried by treatment of cloth with hot air in a stenter, which holds the cloth to width on passage through the apparatus, or in a drier which does not hold the cloth to width, a problem arises in disposing of harmful fume arising from the presence of oil or dyestuff carrier in the cloth. The fume is manifested as a blue smoke and the operatives must be protected from it. Also environmental regulations prohibit discharge of the fume into the atmosphere.

With a view to eradicating such fume, the invention provides a cloth drying apparatus, comprising a drying chamber, means for advancing cloth to be dried through the drying chamber and, within the drying chamber, a circulating fan for circulating air in the drying chamber, nozzles for discharging air circulated by the fan onto the cloth, a burner for burning polluted air which has passed through the cloth, an air inlet for supplying sufficient fresh atmospheric air to the burner to maintain combustion, another fan arranged to feed the polluted air to the burner, a heat exchanger for receiving exhaust gas from the burner and wherein the exhaust gas exchanges heat with cooler air circulating in the drying chamber, means for returning the bulk of the cooled exhaust gas from the heat exchanger to the circulating fan, and an outlet for discharging to atmosphere the remainder of the cooled exhaust gas.

The burner thus serves not only to heat the air circulating in the drying chamber but also to burn and clean the polluted air by burning the fume. It is accordingly legitimate to discharge to atmosphere part of the exhaust gas after it has given up heat in the heat exchanger.

Preferably the burner is a gas burner of the kind supplied by Dunlop Ltd. as the Thermimax burner. This burner includes two plates joined by a series of tubes forming holes for the passage of combustion air. North Sea, coal or other gas is supplied to the outlet of each tube through an annular channel surrounding the outlet.

Radial drillings for the outlet of gas are also formed in the periphery of the plate assembly. In operation the flames from the individual tubes combine to form a central flame surrounded by a ring of flame produced by combustion of the gas emerging from the radial drillings.

One embodiment of stenter in accordance with the invention will now be described in more detail, by way of example; with reference to the accompanying drawings, in which Figure 1 is a plan view; Figure 2 is a section on the line II-II in Figure 1 on a larger scale; Figure 3 is a section on the line III-III in Figure 2; Figure 4 is a scrap part-sectional view showing the crown of the burner; Figure 5 is a plan view, partly broken away, showing part of the mechanism in Figure 2; and Figure 6 is a flow diagram.

The stenter 10 shown in the drawings include a series of enclosed drying chambers 11, through which a web of cloth 12 to be dried is advanced in succession by stenter chains (not shown) which engage the edges of the web in the conventional manner.

Each drying chamber 11 contains a circulating fan 13, which circulates air through the chamber and discharges it onto the upper and lower surfaces of the cloth through nozzles 14 from top and bottom pressure ducts 15, 16 as most clearly shown in Figure 2. The fan 13 is driven by an electric motor 23 (Figure 2) through a belt drive 24.

As best shown in Figures 3 and 5, a burner and heat exchanger system is provided at each side of each drying chamber 11. Each system includes a Thermimax burner 17, to which part of the polluted circulating through the chamber and also fresh air from an inlet 18 is fed by a centrifugal fan 19, driven by an electric motor 20 through a belt drive 21. The remainder of the circulating air returns to the circulating fan 13 through a filter. One of these filters is indicated at 22 in Figure 3, the remaining filters being omitted from the drawings for clarity.

Each burner 17 receives North Sea, coal or other gas through an inlet pipe 25 and includes a hood 26 (Figure 4), which includes tubes 27 for the passage of combustion air as indicated by the arrows A and passages 28, surrounding the tubes 27, through which gas flows as indicated by the arrows B. In operation flames from the individual tubes 27 combine to form a central flame surrounded by a ring of flame produced by combustion of gas flowing through radial holes 29 in the crown.

The clean exhaust gas from each burner 17 passes to a heat exchanger 30, where it gives up heat to the circulating air. The bulk of the exhaust gas is returned through exit slots 31 from the heat exchanger to the circulating fan 13 and the rest is discharged to atmosphere as a fume-free product through an outlet 32.

When the stenter is being used to dry cloth and air is circulated in each drying chamber at a rate of approximately 25000 cft/min it is necessary to maintain the circulating fans 13 in operation. When, however, the stenter is used for heat setting of cloth a slower circulation of air is required, e.g. 12000 cft/min, and the fans 13 are then switched to slow speed.

In the flow diagram shown in Figure 6, the portion 33 of the airflow represents polluted air which has been cooled to a temperature of, say, 1700C by contact with the cloth. The portion 34 represents clean exhaust gas from the burner 17 at a temperature of, say, 450"C. The portion 35 represents circulating air heated in the heat exchanger 30 to, say, 230"C. The portion 36 represents cooled exhaust gas returned from the heat exchanger 30 to the circulating fan 13.

WHAT WE CLAIM IS: 1. A cloth drying apparatus, comprising a drying chamber, mcans for advancing cloth to be dried through the drying chamber and, within the drying chamber, a circulating fan for circulating air in the drying chamber, nozzles for discharging air circulated by the fan onto the cloth, a burner for burning polluted air which has passed through the cloth, an air inlet for supplying sufficient fresh atmospheric air to the burner to maintan combustion, another fan arranged to feed the polluted air to the burner, a heat exchanger for receiving exhaust gas from the burner and wherein the exhaust gas exchanges heat with cooler air circulating in the drying chamber, means for returning the bulk of the cooled exhaust gas from the heat exchanger to the circulating fan, and an outlet for discharging to atmosphere the remainder of the cooled exhaust gas.

2. Apparatus according to claim 1, wherein the burner is a gas burner.

3. Apparatus according to claim 2, wherein the burner produces a central flame surrounded by a ring of flame.

4. Apparatus according to claim 1, which includes stenter chains for advancing the cloth through the drying chamber.

5. Apparatus according to claim 1, substantially as described herein with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. through nozzles 14 from top and bottom pressure ducts 15, 16 as most clearly shown in Figure 2. The fan 13 is driven by an electric motor 23 (Figure 2) through a belt drive 24. As best shown in Figures 3 and 5, a burner and heat exchanger system is provided at each side of each drying chamber 11. Each system includes a Thermimax burner 17, to which part of the polluted circulating through the chamber and also fresh air from an inlet 18 is fed by a centrifugal fan 19, driven by an electric motor 20 through a belt drive 21. The remainder of the circulating air returns to the circulating fan 13 through a filter. One of these filters is indicated at 22 in Figure 3, the remaining filters being omitted from the drawings for clarity. Each burner 17 receives North Sea, coal or other gas through an inlet pipe 25 and includes a hood 26 (Figure 4), which includes tubes 27 for the passage of combustion air as indicated by the arrows A and passages 28, surrounding the tubes 27, through which gas flows as indicated by the arrows B. In operation flames from the individual tubes 27 combine to form a central flame surrounded by a ring of flame produced by combustion of gas flowing through radial holes 29 in the crown. The clean exhaust gas from each burner 17 passes to a heat exchanger 30, where it gives up heat to the circulating air. The bulk of the exhaust gas is returned through exit slots 31 from the heat exchanger to the circulating fan 13 and the rest is discharged to atmosphere as a fume-free product through an outlet 32. When the stenter is being used to dry cloth and air is circulated in each drying chamber at a rate of approximately 25000 cft/min it is necessary to maintain the circulating fans 13 in operation. When, however, the stenter is used for heat setting of cloth a slower circulation of air is required, e.g. 12000 cft/min, and the fans 13 are then switched to slow speed. In the flow diagram shown in Figure 6, the portion 33 of the airflow represents polluted air which has been cooled to a temperature of, say, 1700C by contact with the cloth. The portion 34 represents clean exhaust gas from the burner 17 at a temperature of, say, 450"C. The portion 35 represents circulating air heated in the heat exchanger 30 to, say, 230"C. The portion 36 represents cooled exhaust gas returned from the heat exchanger 30 to the circulating fan 13. WHAT WE CLAIM IS:
1. A cloth drying apparatus, comprising a drying chamber, mcans for advancing cloth to be dried through the drying chamber and, within the drying chamber, a circulating fan for circulating air in the drying chamber, nozzles for discharging air circulated by the fan onto the cloth, a burner for burning polluted air which has passed through the cloth, an air inlet for supplying sufficient fresh atmospheric air to the burner to maintan combustion, another fan arranged to feed the polluted air to the burner, a heat exchanger for receiving exhaust gas from the burner and wherein the exhaust gas exchanges heat with cooler air circulating in the drying chamber, means for returning the bulk of the cooled exhaust gas from the heat exchanger to the circulating fan, and an outlet for discharging to atmosphere the remainder of the cooled exhaust gas.
2. Apparatus according to claim 1, wherein the burner is a gas burner.
3. Apparatus according to claim 2, wherein the burner produces a central flame surrounded by a ring of flame.
4. Apparatus according to claim 1, which includes stenter chains for advancing the cloth through the drying chamber.
5. Apparatus according to claim 1, substantially as described herein with reference to the accompanying drawings.
GB5014077A 1977-12-01 1977-12-01 Cloth drying apparatus Expired GB1583199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5014077A GB1583199A (en) 1977-12-01 1977-12-01 Cloth drying apparatus

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB5014077A GB1583199A (en) 1977-12-01 1977-12-01 Cloth drying apparatus
DE19782829092 DE2829092A1 (en) 1977-12-01 1978-07-03 Apparatus for drying textile materials
ES471560A ES471560A1 (en) 1977-12-01 1978-07-07 An apparatus for drying fabrics
FR7820622A FR2410800A1 (en) 1977-12-01 1978-07-11 Improvements to paintings drying machines
NZ18906478A NZ189064A (en) 1977-12-01 1978-11-30 Cloth drier burning of recirculated drier air
AU42076/78A AU525779B2 (en) 1977-12-01 1978-11-30 Cloth drying apparatus

Publications (1)

Publication Number Publication Date
GB1583199A true GB1583199A (en) 1981-01-21

Family

ID=10454820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5014077A Expired GB1583199A (en) 1977-12-01 1977-12-01 Cloth drying apparatus

Country Status (6)

Country Link
AU (1) AU525779B2 (en)
DE (1) DE2829092A1 (en)
ES (1) ES471560A1 (en)
FR (1) FR2410800A1 (en)
GB (1) GB1583199A (en)
NZ (1) NZ189064A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243206A (en) * 1990-03-23 1991-10-23 Dornier Gmbh Lindauer Drying strip material
US5207008A (en) * 1988-06-07 1993-05-04 W. R. Grace & Co.-Conn. Air flotation dryer with built-in afterburner
DE19713529A1 (en) * 1997-04-01 1998-10-08 Heidelberger Druckmasch Ag Dryer for a material web with exhaust circulation
EP0971191A2 (en) * 1998-07-09 2000-01-12 H. Krantz Textiltechnik Gmbh Process and apparatus for heating goods by a heated gas
EP1053441A1 (en) * 1997-04-30 2000-11-22 Megtec Systems, Inc. Open burner plenum for a flotation dryer
EP1070927A2 (en) * 1999-07-22 2001-01-24 Systronic Maschinenbau GmbH Continuous dryer for plates or webs
CN101703990B (en) 2009-09-10 2012-12-26 简甦 Cooling device for thin strip-shaped object drying equipment

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE66661T1 (en) * 1981-05-25 1984-07-19 M.E.G. Materiels Equipements Graphiques S.A., Morangis, Fr Apparatus for drying webs with hot air while supporting the web, preferably printing machines of paper webs made.
US4449921A (en) 1982-09-02 1984-05-22 Frank Catallo Combined oven and fume incinerator and method of operating same
JPH0313351B2 (en) * 1983-06-02 1991-02-22 Wakayama Iron Works
NL8800226A (en) * 1988-01-29 1989-08-16 Stork Contiweb Dryer for a web.
US4942676A (en) * 1988-06-07 1990-07-24 W. R. Grace & Co.-Conn. Control system for air flotation dryer with a built-in afterburner
US5112220A (en) * 1988-06-07 1992-05-12 W. R. Grace & Co.-Conn. Air flotation dryer with built-in afterburner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH99095A (en) * 1921-08-08 1923-05-01 Scherhag Andreas Method and apparatus for the recovery of hot air.
FR2151230A5 (en) * 1971-08-20 1973-04-13 Stumm Eric
DE2240713C3 (en) * 1971-08-20 1979-09-27 Eric Henri Geoffroy Dipl.Ing. Strassburg Bas-Rhin Stumm (Frankreich)
FR2187095A6 (en) * 1972-07-25 1974-01-11 Stumm Eric
GB1429972A (en) * 1973-08-24 1976-03-31 Duur Kg Otto Process of and apparatus for heating circulating air in drying quipment
DE2412446A1 (en) * 1974-03-15 1975-09-18 Vits Maschinenbau Gmbh Conveyor drier for goods from an offset printing press - where a heat exchanger can receive part of the flue gas containing air for reheating
DE2536935A1 (en) * 1975-08-19 1977-03-03 Duerr O Fa A method and apparatus for drying oberflaechenbearbeiteten, for example lacquered workpieces
FR2334075B1 (en) * 1975-12-02 1981-10-09 Air Ind
DE2616347C3 (en) * 1976-04-14 1983-12-01 Vits-Maschinenbau Gmbh, 4018 Langenfeld, De
DE2727971C2 (en) * 1977-06-22 1983-07-14 Brueckner-Apparatebau Gmbh, 6120 Erbach, De

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207008A (en) * 1988-06-07 1993-05-04 W. R. Grace & Co.-Conn. Air flotation dryer with built-in afterburner
GB2243206A (en) * 1990-03-23 1991-10-23 Dornier Gmbh Lindauer Drying strip material
US5191725A (en) * 1990-03-23 1993-03-09 Lindauer Dornier Gesellschaft Mbh Venting system for heat treating flat material webs
GB2243206B (en) * 1990-03-23 1994-03-09 Dornier Gmbh Lindauer Ventilation apparatus for treatment of flat material
DE19713529A1 (en) * 1997-04-01 1998-10-08 Heidelberger Druckmasch Ag Dryer for a material web with exhaust circulation
EP1053441A1 (en) * 1997-04-30 2000-11-22 Megtec Systems, Inc. Open burner plenum for a flotation dryer
EP1053441A4 (en) * 1997-04-30 2006-01-18 Megtec Sys Inc Open burner plenum for a flotation dryer
EP0971191A2 (en) * 1998-07-09 2000-01-12 H. Krantz Textiltechnik Gmbh Process and apparatus for heating goods by a heated gas
EP0971191A3 (en) * 1998-07-09 2001-12-12 H. Krantz Textiltechnik Gmbh Process and apparatus for heating goods by a heated gas
EP1070927A2 (en) * 1999-07-22 2001-01-24 Systronic Maschinenbau GmbH Continuous dryer for plates or webs
EP1070927A3 (en) * 1999-07-22 2001-03-14 Systronic Maschinenbau GmbH Continuous dryer for plates or webs
CN101703990B (en) 2009-09-10 2012-12-26 简甦 Cooling device for thin strip-shaped object drying equipment

Also Published As

Publication number Publication date
NZ189064A (en) 1982-03-30
ES471560A1 (en) 1979-01-01
AU4207678A (en) 1979-06-07
FR2410800A1 (en) 1979-06-29
DE2829092A1 (en) 1979-06-13
AU525779B2 (en) 1982-12-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee