EP0166406B1 - 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
EP0166406B1
EP0166406B1 EP85107774A EP85107774A EP0166406B1 EP 0166406 B1 EP0166406 B1 EP 0166406B1 EP 85107774 A EP85107774 A EP 85107774A EP 85107774 A EP85107774 A EP 85107774A EP 0166406 B1 EP0166406 B1 EP 0166406B1
Authority
EP
European Patent Office
Prior art keywords
steam
vacuum pump
fibrous material
line
recycling
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
EP85107774A
Other languages
German (de)
English (en)
Other versions
EP0166406A2 (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 tank, in which the fiber material - optionally after mechanical dewatering by air and air flow / or steam - subjected to a vacuum and flowed through by a heated medium and thereby heated, thereby evaporating moisture from the fiber material, which is discharged to the vacuum pump.
  • a liquid treatment such as dyeing the fiber material and while the fiber material remains in the treatment tank
  • the fiber material optionally after mechanical dewatering by air and air flow / or steam - subjected to a vacuum and flowed through by a heated medium and thereby heated, thereby evaporating moisture from the fiber material, which is discharged to the vacuum pump.
  • Such a method is known (DE-OS-1 927 651).
  • textile fiber material such as yarn in the form of cross-wound bobbins is dyed in a treatment container and then dried in this, without this having to be transferred to another container.
  • the cross-wound bobbins are attached to perforated tubes that connect two separate container chambers with inlet and outlet connections so that an initiated flow through the treatment container runs completely through the fiber material.
  • the drying of the dyed and washed fiber material is initiated with mechanical dewatering, with air and / or steam flowing through the fiber material and entraining undevaporated moisture from the fiber material in droplet form.
  • a simultaneous vacuum in the container encourages the droplets to detach from the fiber material.
  • moisture remaining in the fiber material is removed by thermal drying.
  • heated air is passed through the fiber material subjected to vacuum, this air on the one hand supplying heat to evaporate the moisture and on the other hand absorbing water vapor on the fiber material and discharging it to the vacuum pump.
  • This moisture is deposited in a condenser in front of the vacuum pump or condenses in the vacuum pump itself, for example if it is a water ring pump.
  • steam is not introduced into the container or into the fiber material to be dried, or only in a small amount in addition to the heated drying air. This steam is essentially not overheated and, in addition to a limited supply of heat to the fiber material, serves to avoid local overdrying and makes the drying more uniform.
  • Drying by means of heated air requires not only an air heater but also a comparatively large capacity vacuum pump which processes the comparatively large amounts of air required for the desired rapid drying. Therefore, in addition to the corresponding system costs, there are also comparatively high operating costs, which result on the one hand from the high vacuum pump output to be achieved and on the other hand from the fact that a correspondingly large amount of exhaust air of increased temperature is produced.
  • the invention has for its object to carry out the known method so that the fiber material can be dried quickly and easily with a comparatively low investment in plant and operating costs.
  • This object is achieved in that continuously and exclusively superheated steam is circulated through the fiber material and an intermediate superheater, the steam supplying the heat required for the evaporation of the moisture and a steam part is withdrawn from the circuit to the vacuum pump, which is the one from the Fibrous material corresponds to evaporated moisture.
  • the known finish steam drying differs significantly from the process according to the invention in that the process is carried out at atmospheric pressure and a correspondingly high steam temperature and the steam introduced into the container does not is withdrawn and condensed but simply escapes into the environment through openings and leaks in the container.
  • Such conditions can only be tolerated in laundries and hot shortages.
  • drying by means of moisture evaporation under atmospheric pressure leads to the laundry to be dried being exposed to temperatures of 100 ° C. and more, provided that complete and not only partial drying is actually sought. Many fiber materials are not able to cope with such loads.
  • the fiber material is not only exposed to the action of steam, but is actually flowed through with steam, although moisture in the form of steam is to be removed from the fiber material.
  • Steam is usually available in factories where fiber materials such as packages and packages are dyed or otherwise treated.
  • the superheating of the steam can be achieved by lowering the pressure by means of the vacuum pump which is assigned to the system.
  • a decisive advantage of carrying out the process according to the invention 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 can be kept low and essentially limited to the amount of moisture to be removed in the fiber material, because the steam can be circulated to dry to the desired degree of drying without additional live steam.
  • the circulation of the steam enables it to be reheated outside the drying container.
  • the heat supplied is transported from the cycle steam to the fiber material and transferred to it.
  • the circulated steam can also be formed by moisture evaporated from the fiber material, so that steam supply from the outside can also be dispensed with entirely. This is possible because an initial evaporation of the moisture from the fiber material can be carried out by means of a correspondingly strong pressure reduction in the container by means of the vacuum pump.
  • 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 performing the above-described method with a container through which the fiber material can flow, a circuit line into 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 instruction opening into the circuit line.
  • Such a device with a condenser and a live steam feed line is already known (DE-OS-2 010 605).
  • 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 a 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 circulating device on the one hand and the branch line with the vacuum pump on the other hand can thus be alternately connected or shut off, but this method of operation does not enable the method according to the invention ren in which, in the interest of rapid drying, the fiber material is continuously flowed through with superheated steam and a portion of the steam is discharged 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 designed 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 line 18 is connected to the blower 16, into 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.
  • textile fiber material can be dyed and dried in the following way:
  • the fiber material 7 is introduced into the container 1, which is then evacuated by means of the vacuum pump 31. Then 3 dye liquor is introduced into the container 1 via the inlet.
  • the action of the dye liquor on the fiber material 7 can be increased in a known manner by circulation of the dye liquor through the fiber material 7. It is also possible to work with pulsating pressure surges which can be applied, for example, via the nozzle 6.
  • the dyeing liquor can be pressed out of the container 1 after the intended exposure time or can also run off to the dewatering container 10 and its liquid outlet 11.
  • the fiber material 7 is washed in a corresponding manner, for which purpose the washing water can be introduced into the container via the connection 3. Possibly. several dyeing operations and / or washing operations are carried out.
  • 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 changeover valve 14 via the bypass line 17 and the branch line 27 to the vacuum pump 31, in which case air is used for separation as well as condensation if steam is used as a mechanical drainage medium.
  • the steam supplied via the live steam feed line 24 not only has a mechanical dewatering effect but also, if necessary in conjunction with a partial condensation in the fiber material 7, preheats 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 amount of steam is removed from the circuit via the branch line 27 and discharged to the 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 designed to dry 2 kg of yarn containing 2.5 kg of water within 30 minutes.
  • a flow heater 20 of 2.5 m 2 heat exchanger area is provided.
  • the blower 16 is for a conveyance of 8 m 3 / 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 blower 16 delivers 17.5 m 3 / min. under a differential pressure of 0.1 bar.
  • the density is 0.13 kg / m 3 , the pressure 0.203 bar and the temperature 60 ° C.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)

Claims (10)

1. Un procédé de séchage de matière fibreuse ou similaire, plus particulièrement à la suite d'un traitement par un liquide, tel que la teinture, de la matière fibreuse, et en conservant la matière fibreuse dans le récipient de traitement, procédé dans lequel, le cas échéant, après un égouttage mécanique par la circulation d'air et/ou de vapeur, la matière fibreuse est soumise à une pression négative et à la circulation d'un milieu chauffé et est chauffée par ce moyen, et que de l'humidité est ainsi enlevée, par vaporisation, de la matière fibreuse et conduite vers la pompe à vide, caractérisé en ce que, d'une façon continue et exclusive, de la vapeur surchauffée est circulée à travers la matière fibreuse et un surchauffeur intermédiaire, la vapeur apportant la chaleur nécessaire pour la vaporisation de l'humidité, et en ce qu'une fraction de la vapeur est enlevée du circuit de circulation pour être conduite vers la pompe à vide, cette fraction de vapeur correspondant à l'humidité enlevée par vaporisation de la matière fibreuse.
2. Le procédé selon la revendication 1, caractérisé en ce que la fraction de vapeur est évacuée vers la pompe à vide à partir d'une position située en aval de la matière fibreuse et du dispositif de circulation et en amont du surchauffeur intermédiaire.
3. Le procédé selon la revendication 1 ou 2, caractérisé en ce que la fraction de vapeur est évacuée vers la pompe à vide par l'intermédiaire d'un régulateur de pression qui s'ouvre quand la pression augmente dans le circuit de circulation.
4. Un dispositif pour la mise en oeuvre du procédé selon les revendications 1 à 3, ledit dispositif comprenant un récipient (1) capable de contenir la matière fibreuse (7) de telle manière qu'elle peut être traversée par un courant, un circuit de circulation (26) dans lequel sont installés le récipient (1), un dispositif de circulation (16) et un appareil à chauffage instantané (20), et un branchement (27), connecté au circuit de circulation (26) et comportant une pompe à vide (31) et, éventuellement, un condenseur (28), ainsi, éventuellement, une conduite d'amenée de vapeur vive (24) qui débouche dans le circuit de circulation (26), caractérisé en ce que le branchement (27) est muni d'un régulateur de pression (32) destiné à contrôler la pression négative produite par la pompe à vide (31) dans le circuit de circulation (26).
5. Le dispositif selon la revendication 4, caractérisé en ce que l'appareil à chauffage instantané (20) est un échangeur de chaleur à vapeur.
6. Le dispositif selon la revendication 4 ou 5, caractérisé en ce qu'un appareil à refroidissement instantané (28) est installé dans le branchement (27).
7. Le dispositif selon la revendication 6, caractérisé en ce que l'appareil à refroidissement instantané (28) est un échangeur de chaleur à eau.
8. Le dispositif selon l'une quelconque des revendications 4 à 7, caractérisé en ce qu'un vaisseau d'égouttage (10) ayant une sortie de liquide (11) est monté dans le circuit de circulation (26) en aval du récipient (1) et en amont du branchement (27) conduisant vers la pompe à vide (31).
9. Le dispositif selon l'une quelconque des revendications 4 à 8, caractérisé en ce que le branchement (27) est connecté au circuit de circulation (26) dans une position située en aval du dispositif de circulation (16) et en amont de l'appareil à chauffage instantané (20).
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
DE19843423388 DE3423388A1 (de) 1984-06-25 1984-06-25 Verfahren und vorrichtung zum trocknen von fasermaterial
DE3423388 1984-06-25

Publications (3)

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

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
WO2004038759A2 (fr) 2002-08-23 2004-05-06 Dahm Jonathan S Procede et appareil permettant d'utiliser des diodes electroluminescentes
FI20045322A (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
NL61739C (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
CH590439B5 (fr) * 1974-12-16 1977-08-15 Karrer System Ag
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

Also Published As

Publication number Publication date
ATE47608T1 (de) 1989-11-15
US4702014A (en) 1987-10-27
EP0166406A2 (fr) 1986-01-02
DE3573936D1 (en) 1989-11-30
EP0166406A3 (en) 1986-10-08
DE3423388A1 (de) 1986-01-02

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