EP0166406A2 - Procédé et appareil de séchage de matières fibreuses - Google Patents

Procédé et appareil de séchage de matières fibreuses Download PDF

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Publication number
EP0166406A2
EP0166406A2 EP85107774A EP85107774A EP0166406A2 EP 0166406 A2 EP0166406 A2 EP 0166406A2 EP 85107774 A EP85107774 A EP 85107774A EP 85107774 A EP85107774 A EP 85107774A EP 0166406 A2 EP0166406 A2 EP 0166406A2
Authority
EP
European Patent Office
Prior art keywords
fiber material
steam
vacuum pump
line
circuit
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.)
Granted
Application number
EP85107774A
Other languages
German (de)
English (en)
Other versions
EP0166406B1 (fr
EP0166406A3 (en
Inventor
Fritz Karrer
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.)
Karrer System AG
Original Assignee
Karrer System AG
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 Karrer System AG filed Critical Karrer System AG
Priority to AT85107774T priority Critical patent/ATE47608T1/de
Publication of EP0166406A2 publication Critical patent/EP0166406A2/fr
Publication of EP0166406A3 publication Critical patent/EP0166406A3/de
Application granted granted Critical
Publication of EP0166406B1 publication Critical patent/EP0166406B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/12—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length
    • D06B5/16—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length through yarns, threads or filaments

Definitions

  • the invention relates to a method for drying fiber material or the like, in particular following a liquid treatment such as dyeing the fiber material and while the fiber material remains in the treatment container, in which the fiber material may first be used for mechanical dewatering to a residual moisture content with air and / or Steam flows through and is finally dried while applying a vacuum and introducing steam, the moisture removed from the fiber material being removed to the vacuum pump or to a condenser assigned to the vacuum pump.
  • Such a method is known (DE-OS 19 27 651).
  • textile fiber material such as yarn in the form of cross-wound bobbins is dyed in a treatment container and then dried without being transferred to another container.
  • An introductory mechanical dewatering is provided for this purpose, in which air and / or steam flows through the fiber material and entrains undevaporated moisture from the fiber material in droplet form.
  • a simultaneous vacuum in the container encourages the droplets to detach from the fiber material.
  • the object of the invention is to carry out the known method in such a way that the fiber material can be quickly and easily finished dried with a comparatively low outlay on installation and operating costs.
  • This object is achieved in that continuously and exclusively superheated steam is passed through the fiber material during the finished drying, which feeds the heat required for evaporation of the residual moisture and flows out with the residual moisture evaporated from the fiber material.
  • a flow of heated air is thus dispensed with in the finished drying according to the invention, which already leads to a simplification of the system.
  • Steam and possibly superheated steam are usually available in those factories in which fiber material is dried. Overheating can also be achieved by lowering the pressure with the vacuum pump.
  • a decisive advantage of carrying out the process without using drying air is that the vacuum pump does not have to process any corresponding amounts of air and that moist warm air does not have to be emitted. Rather, the vacuum pump only sucks in water vapor that can be used in operation after it has been condensed into hot water.
  • the amount of waste steam or condensate obtained can be kept low and essentially limited to the amount of residual moisture to be removed, because, according to the following explanations, it is possible to finish drying without additional live steam.
  • the steam is passed in a circuit through the fiber material and an intermediate superheater, a steam portion corresponding to the formation of steam from residual moisture being drawn off from the circuit to the vacuum pump.
  • the heat required to evaporate the residual moisture is transported from the reheater to the fiber material by means of the cycle steam. It can be seen that this circulated steam can easily be formed by evaporated residual moisture, so that, if necessary, not only a supply for superheated drying air but also a steam supply from the outside can be dispensed with. This is possible because an initial evaporation of the residual moisture can be carried out by means of a correspondingly strong pressure reduction in the container by means of the vacuum pump. In this context, it is advantageous if, during the mechanical dewatering preceding the finished drying by means of air and / or steam, this medium has already been preheated by appropriate heat emission, if necessary to close to the boiling point corresponding to the vapor pressure curve.
  • drying is carried out in this way with steam flowing in the circuit, it is expedient to draw off the steam portion at a point to the vacuum pump located behind the fiber material and the circulation device and in front of the reheater.
  • the vapor portion is expediently drawn off to the vacuum pump via a pressure control valve that opens when the pressure rises in the circuit.
  • good steam circulation through the reheater and on the other hand sufficient steam discharge to the vacuum pump is ensured while maintaining the intended operating vacuum in the treatment tank or in the circuit.
  • the method according to the invention is not only suitable for drying yarns or textile piece goods, but very generally for drying flowable material, which can also be, for example, paper stock or a wood fiber material.
  • the invention also relates to a device for carrying out the above-described method with a container that can flow through the fiber material, a circuit line in which the container, a circulating device and a water heater are installed, and a branch line connected to the circuit line with a vacuum pump and possibly a condenser and if necessary, a live steam supply line opening into the circuit line.
  • Such a device with a condenser and a live steam feed line is already known (DE-OS 20 10 605).
  • the live steam supply line opens into the circuit via a steam cooler, which is used for mechanical dewatering and not for finished drying.
  • the steam is expanded so that it has a large specific volume at low density, so that despite a comparatively small amount of steam that is passed through the textile material to be dried, it is flowed through at a high speed, which is responsible for mechanical dewatering by entrainment has been recognized by water droplets as appropriate.
  • the vacuum pump is not heavily loaded because the amount of steam to be processed is small and is condensed in front of the vacuum pump.
  • heated air is also used here, which is even supplied under excess pressure, heat being intermittently supplied to the fiber material by means of circulated air under excess pressure and then residual moisture is evaporated from the fiber material by connecting the vacuum pump and is removed to the vacuum pump.
  • the circuit line with the heater and the circulation device on the one hand and the branch line with the vacuum pump on the other hand can thus be connected or shut off alternately, however, this method of operation does not enable the method according to the invention, in which, in the interest of rapid drying, the fiber material flows continuously with superheated steam and thereby a proportion of steam is derived to the vacuum pump.
  • the known device is modified according to the invention in such a way that the branch line is provided with a pressure regulating valve for regulating the negative pressure applied by the vacuum pump in the circuit line.
  • This measure creates the possibility to flow exclusively through the fiber material during the final drying and at the same time to branch off a portion of the cycle steam to the vacuum pump.
  • the continuous-flow heater is a steam-operated heat exchanger
  • a continuous-flow cooler is installed in the branch line, which is a water-operated heat exchanger that enters the circuit line behind the container and in front of the branch line to the vacuum pump Drainage tank with a liquid drain is installed and that the branch line is connected to the circulation line behind the circulating device and before the instantaneous water heater.
  • the system shown has a container 1 with a lid 2, an inlet 3 for treatment liquid, an outlet 4, a connection 5 for introducing a drying medium and a nozzle 6 for connecting compressed air. Furthermore, the fiber material to be treated, for example yarn in the form of a cheese 7, is shown in the container 1.
  • the container 1 is formed in a known manner and the fiber material 7 is arranged such that there is a flow connection between the inlet -3, the connection 5 and the nozzle 6 on the one hand and the outlet 4 on the other hand only through the fiber material 7.
  • the outlet 4 is connected via an outlet line 8 to the inlet connection 9 of a dewatering container 10 with a lower liquid outlet 11 and an upper gas outlet 12.
  • a line 13 extends from the gas outlet 12 and is connected via a changeover valve 14 either to the suction line 15 of a blower 16 or to a bypass line 17 bypassing the blower 16.
  • a blower is on the blower 16 Line 18 connected, in which the bypass line 17 opens.
  • the blow line 18 leads via a connecting line 19 to a continuous-flow heater 20, which is designed as a steam-heated heat exchanger, to which a heating steam feed line 21 and a condensate drain 22 are connected.
  • a continuous-flow heater 20 which is designed as a steam-heated heat exchanger, to which a heating steam feed line 21 and a condensate drain 22 are connected.
  • the flow path through the continuous-flow heater 20 which continues the connecting line 19 is connected to the connection 5 of the container 1 via a supply line 23.
  • a live steam feed line 24 opens into the feed line 23 and can be shut off via a shut-off valve 25.
  • the lines 8, 13, 15, 18, 19 and 23 form a circuit line 26 into which the container 1, the dewatering container 10, the blower 16 and the water heater 20 are switched on.
  • a branch line 27 is connected to the circuit line 26 or its blow line 18 and is connected to a vacuum pump 31 via a flow cooler 28 with a cooling water inlet 29 and a cooling water outlet 30.
  • a pressure control valve 32 is installed in the branch line 27 between the circuit line 26 and the flow cooler 28. This can be set to a desired negative pressure, which is then maintained in the circuit line 26 by means of the vacuum pump 31. Because of the flow resistances within the circuit line 26, of course, the same negative pressure does not exist at all points in the circuit.
  • the fiber material.7 is dried in the container 1. This drying is carried out in two stages by first performing mechanical dewatering and then thermally drying. In both cases, a vacuum which promotes drying is maintained in the container 1 by means of the vacuum pump 31.
  • steam and / or compressed air are introduced into the container 1 via the live steam supply line 24 or the nozzle 6. These media remove moisture from the fiber material 7 in the form of entrained droplets. This moisture is separated in the dewatering container 10 or flows with the corresponding position of the switch valve 14 via the bypass line 17 and the branch line 27 to the vacuum pump 31, whereby in the case of dewatering by means of air a separation as well as a condensation takes place if steam is used as a mechanical dewatering medium .
  • the steam supplied via the live steam feed line 24 not only has a mechanical dewatering effect but also, if appropriate, in connection with a partial condensation in the fiber material 7, a preheating of the fiber material and the residual moisture still remaining in it.
  • the subsequent finished drying is a thermal drying in which the fiber material 7 flows through with steam and is heated in coordination with the negative pressure applied by means of the vacuum pump 31 such that the residual moisture evaporates.
  • the steam produced in the fiber material 7 is circulated through the circuit line 26 when the changeover valve 14 is in the position shown and the fan 16 is running, this steam being overheated in the water heater 20. This leads to further evaporation of residual moisture, and a corresponding proportion of steam is removed from the circuit via branch line 27 and discharged to vacuum pump 31.
  • the pressure control valve 32 causes this vapor portion to be transferred to the vacuum pump.
  • the finished drying can be carried out entirely without the supply of live steam, so that the live steam supply line 24 with the shut-off valve 25 and also the bypass line 17 with the changeover valve 14 may be omitted; because by means of the vacuum pump 31 residual moisture can already be evaporated from the fiber material 7 at the beginning of the finished drying, this steam can be circulated through the circuit line 26 by means of the blower 16 and heat is transported from the water heater 20 to the fiber material 7.
  • the system shown and described corresponds to a test system which is intended to do so within 30 minutes Drying 2 kg of yarn containing 2.5 kg of water.
  • a flow heater 20 of 2.5 m 2 heat exchanger area is provided.
  • the blower 16 is for a conveyance of 8 m3 / min. and a pressure difference of 0.1 bar.
  • the cycle steam has a density of 0.3 kg / m 3 , a pressure of 0.5 bar and a temperature of 80 ° C.
  • the fan 16 delivers 17.5 m3 / min. under a differential pressure of 0.1 bar.
  • the density is 0.13 kg / m 3
  • the pressure is 0.203 bar
  • the temperature is 60 ° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP85107774A 1984-06-25 1985-06-25 Procédé et appareil de séchage de matières fibreuses Expired EP0166406B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107774T ATE47608T1 (de) 1984-06-25 1985-06-25 Verfahren und vorrichtung zum trocknen von fasermaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3423388 1984-06-25
DE19843423388 DE3423388A1 (de) 1984-06-25 1984-06-25 Verfahren und vorrichtung zum trocknen von fasermaterial

Publications (3)

Publication Number Publication Date
EP0166406A2 true EP0166406A2 (fr) 1986-01-02
EP0166406A3 EP0166406A3 (en) 1986-10-08
EP0166406B1 EP0166406B1 (fr) 1989-10-25

Family

ID=6239096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107774A Expired EP0166406B1 (fr) 1984-06-25 1985-06-25 Procédé et appareil de séchage de matières fibreuses

Country Status (4)

Country Link
US (1) US4702014A (fr)
EP (1) EP0166406B1 (fr)
AT (1) ATE47608T1 (fr)
DE (2) DE3423388A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7989839B2 (en) 2002-08-23 2011-08-02 Koninklijke Philips Electronics, N.V. Method and apparatus for using light emitting diodes

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410788A (en) * 1992-11-10 1995-05-02 Tns Mills, Inc. Yarn conditioning process & apparatus
FR2745896B1 (fr) * 1996-03-07 1998-04-24 Armines Procede et installation de sechage d'une masse de matiere fibreuse humide, notamment d'une masse de linge
US6094840A (en) * 1997-11-06 2000-08-01 Xorella Ag Method for the heat treatment of textiles
DE19916761A1 (de) * 1999-04-14 2000-11-02 Klaschka Gmbh & Co Verfahren und Vorrichtung zum Besprühen von Werkstücken
GB0110130D0 (en) * 2001-04-24 2001-06-20 Shardlow Andrew M Clothes dryer
TWI252297B (en) * 2001-12-27 2006-04-01 Jeng-Ming Jou Multi-functional closed type cleaning and vacuum drying method
CN100486720C (zh) * 2002-03-05 2009-05-13 周政明 具多用途密闭式洗净、真空干燥的方法及其装置
FI20045322L (fi) * 2004-09-03 2006-03-04 Heimo Vaelimaeki Kuivain sekä menetelmä sen käyttämiseksi ja valmistamiseksi
CN103510314B (zh) * 2012-07-20 2016-06-08 江苏伊思达纺织有限公司 一种筒子纱半浸染抽吸段染装置及方法
CN103510309B (zh) * 2012-07-20 2016-02-17 江苏伊思达纺织有限公司 一种经轴纱半浸染抽吸段染装置及方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1902575A (en) * 1930-01-23 1933-03-21 Allis Chalmers Mfg Co Method of treating objects
US2266375A (en) * 1933-08-31 1941-12-16 American Enka Corp Process and apparatus for drying packages of artificial silk
BE470298A (fr) * 1946-02-11
US2574298A (en) * 1946-12-20 1951-11-06 Maytag Co Heat exchanger clothes drier
NL65105C (fr) * 1948-02-24
US2871574A (en) * 1951-03-21 1959-02-03 Thies Alfred Friedric Bernhard Drier apparatus
DE1635211A1 (de) * 1966-03-08 1971-06-09 Jagri Gmbh Maschinen Und Appba Vorrichtung zur Trocknung von nassbehandelten,insbesondere gefaerbten Garnen u.dgl.
SE330677B (fr) * 1968-01-18 1970-11-30 F Karrer
US3522663A (en) * 1968-04-23 1970-08-04 Jagri Gmbh Maschinen Und Appar Apparatus for drying wet-treated goods
US3631691A (en) * 1968-05-31 1972-01-04 Friedrich W J Karrer Apparatus for liquid-treating fiber materials and drying said materials
DE2010605A1 (en) * 1970-03-06 1971-09-16 Obermaier & Cie, 6730 Neustadt Fibre and yarn drying plant
US3927478A (en) * 1974-10-15 1975-12-23 Karrer System Ag Method and apparatus for drying fibrous material
CH1666774A4 (fr) * 1974-12-16 1977-01-31
US4197657A (en) * 1978-02-21 1980-04-15 Leino Ilkka M Procedure for drying an organic, most appropriately axylogenic material, such as veneers for instance
US4242808A (en) * 1978-11-22 1981-01-06 Ingersoll-Rand Company Paper web drying system and process
FR2466726A1 (fr) * 1979-10-01 1981-04-10 Inst Textile De France Procede et installation de diminution de la teneur en liquide d'une matiere poreuse a l'aide de vapeur dudit liquide surchauffee
DE3230764C2 (de) * 1982-08-16 1985-04-04 Jörg 8500 Nürnberg Danneberg Verfahren zum Finishen und/oder Trocknen von Textilstücken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7989839B2 (en) 2002-08-23 2011-08-02 Koninklijke Philips Electronics, N.V. Method and apparatus for using light emitting diodes

Also Published As

Publication number Publication date
EP0166406B1 (fr) 1989-10-25
DE3573936D1 (en) 1989-11-30
US4702014A (en) 1987-10-27
ATE47608T1 (de) 1989-11-15
DE3423388A1 (de) 1986-01-02
EP0166406A3 (en) 1986-10-08

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