JPH0711565A - Ozone-containing liquid treating apparatus of fiber product - Google Patents

Abstract

PURPOSE:To obtain an ozone treating apparatus of a fiber product having safety on environment and general-purpose properties and constructed so as to carry out uniform treatment in treating the fiber product in order to carry out scouring or bleaching or improve fiber performance such as pile resistance, shrink proofing property, dyeing properties and water absorption. CONSTITUTION:This ozone-containing liquid treating apparatus of a fiber product is provided with an injecting and mixing tool for injecting, mixing and dissolving an ozone-containing gas into a treating liquid, a holding tool 2 holding a fiber product 1 to be treated in laminated state and having fine holes through which a treating liquid can be passed and the fiber product to be treated can not be passed, a treating tank capable of packing a holding tool and the fiber product to be treated, a space part equipped with a circulating system for circulating a circulating system for circulating the ozone-containing liquid so as to pass the ozone-containing liquid through space among the fiber product to be treated, kept in laminated state and a pump 10 and collecting the waste ozone gas on the upper part of the treating tank, a gas-discharging pipe 15 for discharging the waste ozone gas from this space part out of the treating tank, a liquid-injecting pipe 8 for injecting the treating liquid into the treating tank and a discharge pipe 12 for discharging the treated waste liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating a textile product with an ozone-containing liquid. More specifically, it relates to an apparatus for treating textile products for the purpose of improving fiber performance such as scouring, bleaching or anti-pill property, shrinkproofing property, dyeing property and water absorption property with ozone-containing liquid.

[0002]

2. Description of the Related Art Conventionally, treatment of textiles with ozone has been studied for various purposes, but there are various difficulties and it is difficult to put them into practical use. Of the various difficulties,
What is worth mentioning is that there is no processing device that is environmentally safe, versatile, and has uniform processability.

Japanese Patent Laid-Open No. 49-41700 and Japanese Patent Laid-Open No. 50-136477 disclose ozone treatment of a textile product in an organic solvent, but there are environmental problems caused by the organic solvent. Japanese Patent Laid-Open No. 50-136478 discloses
It is obvious that uniform treatment is difficult to perform only by injecting the ozone-containing gas into the aqueous solution in which the object to be treated is immersed. JP-A-3-146094 and Japanese Utility Model Laid-Open No. 3-8847.
No. 8 gazette uses a washing tub, injects an ozone-containing gas into an aqueous solution, and agitates a textile product, but is concerned with the treatment of only a limited form of textile products such as clothes, and for mass treatment. Not suitable.

According to Japanese Patent Laid-Open No. 3-19961, the wool top is agitated, but it can be treated because of a small amount of peaker scale treatment, and cannot be agitated in the top form. Prior to dyeing of textile products, impurities from raw cotton or raw wool, spinning oil agent in spun yarn and knitting oil agent or sizing agent in knitted fabric are adhered in large quantities, so scouring or scouring bleaching is required. .

JP-A-49-41700 and JP-A-5-41
No. 4-11381, Japanese Utility Model Laid-Open No. 2-1312670 and Japanese Utility Model Laid-Open No. 4-40772 deal with dry ozone-containing gas, and JP-A-55-142759 discloses mixed treatment of ozone-containing gas and steam. Japanese Patent Laid-Open No. 50-126997 discloses a method of impregnating an aqueous solution with an aqueous solution, squeezing it, and then treating it in an ozone-containing gas, both of which are separately attached to the textile after the ozone treatment. The process using other models for removing substances and ozone decomposing substances is required, which is complicated.

[0006]

DISCLOSURE OF THE INVENTION An object of the present invention is to scouring, bleaching or anti-pilling of textiles with ozone, shrinkproofing,
Dyeability, in treating for the purpose of improving the fiber performance such as water absorption, problems such as the invention or device of the above patent publication,
That is, the problems such as environmental safety, non-universality, and non-uniformity of treatment are eliminated, and at the same time as ozone treatment, ozone decomposing substances, water-soluble substances, etc. are removed and then dyed with the same treatment equipment. It is an object of the present invention to provide an ozone treatment device for textile products, which is capable of performing processes and other treatments.

[0007]

That is, according to the present invention, an injection mixing tool for injecting, mixing, and dissolving an ozone-containing gas into a treatment liquid and a textile product to be treated are held in a laminated state, and A holder having a pore through which the treatment liquid can pass and the fiber product to be treated cannot pass through, and a treatment tank into which the holder and the fiber product to be treated can be loaded,
A space part for collecting waste ozone gas in the upper part of the processing tank, which is provided with a circulation system and a pump for circulating the ozone-containing liquid so that the ozone-containing liquid passes through the voids of the textile product to be treated held in a laminated state. And an ozone-containing liquid treatment of a textile product including an exhaust pipe for discharging waste ozone gas from the space to the outside of the treatment tank, a water injection pipe for injecting the treatment liquid into the treatment tank, and a drain pipe for discharging the treatment waste liquid Device.

The ozone-containing gas referred to in the present invention is air,
This is a gas containing ozone obtained by a known method using oxygen-enriched air or pure oxygen as a raw material, for example, by ozonizing oxygen in the raw material by electric discharge. The treatment liquid referred to in the present invention is pure water or alkali according to the purpose of treatment,
Liquid (mainly referred to as an aqueous solution) composed mainly of water obtained by dissolving, emulsifying, and decomposing an acid, an inorganic / organic chemical, a fiber protective agent, a reaction accelerator, or injecting an ozone-containing gas into these aqueous solutions. , And an aqueous solution in which ozone is dissolved (hereinafter referred to as an ozone-containing liquid).

The ozone-containing gas is injected into the processing liquid circulated by pumps such as oblique flow and axial flow under normal pressure or pressure.
Injection, mixing and dissolution of ozone-containing gas into the processing liquid
It is preferable to use an injection mixer such as an ejector, a diffuser, an air diffuser, a static mixer, or a rotary atomizer, either alone or in combination. The fiber product referred to in the present invention includes natural fibers such as cotton, hemp, wool and silk, cellulose regenerated fibers such as cuprammonium rayon and viscose rayon, and raw fibers made of synthetic fibers such as polyacrylics, polyamides and polyesters. , Fluff, sliver, tow, spun yarn, knitted fabric, non-woven fabric and mixed spun yarn in which the above fibers are mixed, mixed twisted yarn, mixed knitted woven fabric and the like. These fiber products are held in a laminated state on a holder according to the form of the fiber product and loaded into a processing tank.

The holder and the laminated state according to the form of the fiber product means that the treatment liquid can pass and the fiber product to be treated cannot pass if the fiber product is cotton-like or crepe-like. A holder that has a large number of pores on the inner and outer peripheral surfaces of a cylindrical concentric circle and has a bottom surface and an upper surface that extend from the inner cylinder to the outer cylinder, and is surrounded by the upper surface, the bottom surface, the inner cylinder, and the outer cylinder. The state in which the fiber products are packed randomly and at a substantially uniform packing density in the filled space.

If the fiber product is a sliver, the top-shaped container is filled in the holder. If the fiber product is a tow, the tow is shaken off in the holder so as to have a substantially uniform packing density, and the upper surface is set. If the textile product is a woven or non-woven fabric, it is a cylinder having a large number of pores on the peripheral surface through which the treatment liquid can pass, and the distance from the pores at one end to the pores at the other end of the cylindrical peripheral surface. Is a holder that can be made substantially the same in width as the woven or non-woven fabric, and the woven or non-woven fabric is wound around the outer peripheral surface of the cylinder in a roll shape.

As another example of a holder and a laminated state, the present invention uses a tube having a large number of pores for passage of a treatment liquid as a holder, and the outer peripheral surface of the holder has a constant traverse angle and Depending on the winding density, there is a state in which threads are wound in a cone shape or cheese shape and laminated, and in this example, the pipes can be stacked in multiple stages and the processing liquid can pass through. In addition, a support can be used inside the pipe.

The pores may be circular, elliptical or rectangular, depending on the form of the fiber product to be treated, but preferably have a circular shape of 0.1 to ¹ cm ² , and the pores and the treatment liquid pass through. The area ratio with the part that cannot be done is 1: 2 to 1:20
Is good. The ozone-containing liquid and a part of the undissolved gas of the ozone-containing gas that has not been dissolved in the treatment liquid pass through the pores of the tube or inner cylinder of the holder, and then pass through the interfiber voids of the fiber laminate, or Conversely, it passes from the outer layer of the fiber laminate to the inner layer.

The waste ozone gas is a gas obtained by collecting a part of undissolved gas containing ozone in the upper part of the treatment tank, a gas of a decomposed product of ozone from the fiber product to be treated, and oxygen from self-decomposition of ozone. Say. A space for gas-liquid separation for discharging waste ozone gas and an exhaust pipe are provided above the processing tank.
If necessary, the exhaust pipe can be discharged into the atmosphere through an ozone absorbing or decomposing device for removing ozone in the waste ozone gas. Alternatively, it can be returned to the ozone generator through an exhaust pipe, a drying device, a device for removing and adsorbing substances other than ozone, and the like.

The treated liquid after gas-liquid separation is circulated again by pumps, the ozone-containing gas is injected / mixed / dissolved, passes through the holder / fiber laminate, and is passed through the gas-liquid separation circulation system for a desired time. , You can continue. In order to cool or heat the processing liquid in this circulation system, a heat exchanger is provided, or a pipe for directly injecting a cooling medium or a heating medium, a thermometer, a temperature control device, a time control device, a treatment tank internal pressure / treatment It is possible to provide a pressure gauge for liquid discharge pressure, ozone injection pressure, etc., a generated ozone / waste ozone concentration meter, an ozone liquid concentration meter, and an auxiliary tank for injecting / injecting various chemicals into the processing tank.

Since the device of the present invention handles ozone,
Teflon, polyvinyl chloride, polypropylene, polyethylene, aluminum, stainless steel, and other sensitive materials that do not react with ozone are good. Depending on the purpose of the treatment, if it is necessary to keep the ozone concentration of the ozone-containing liquid at a high concentration, or before or after the ozone treatment,
For high temperature and high pressure processing, stainless steel, which is pressure resistant, is preferable.

[0017]

The treatment liquid becomes a turbulent flow because it passes through the fiber voids of the laminated fiber product to be treated, and as a result, a part of the generated ozone which was not dissolved by the injection mixer alone is passing through the fiber voids. , It is dissolved at any time to increase the ozone concentration of the ozone-containing liquid, and the ozone that is commensurate with the ozone consumed by the textile product to be treated is dissolved at any time, and the inner layer, middle layer and outer layer of the fiber laminate are treated with the same ozone concentration. Therefore, it is presumed that the uniformity of processing, which is one of the objects of the present invention, can be achieved.

[0018]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to FIG. 1, but the present invention is not limited thereto. In the examples,% means weight% with respect to the fiber to be treated. For the pilling property, JISL1076A method and judgment standard photograph 3 were used.

[0019]

Example 1 A knitted fabric having a density of 24 / inch, a course, an 18 / inch well, a width of 15 cm, and a length of 20 m was knitted with a 12-gauge knitting machine using a yarn of 2/48 count. An outer diameter of 7 cm, which has pores 3 having a diameter of 4 mm between one end and the other end of the cylinder and having a diameter of 4 mm, and the ratio of the area of the pores to the area of the non-pores is 1: 4 A cylinder 2 having a length of 17 cm was used as a holder, and the knitted fabric was wound in a roll shape so as to cover all the pores to obtain a laminated fiber product 1 to be treated. The layer thickness is 5.2 cm.

The holder and the fiber laminate were loaded into the treatment tank 4 by using the supports 5 and 6 for fixing the holder, and the lid was closed with a lid 7, and pure water was introduced into a water injection pipe 8 to obtain a liquid ratio (treatment target). (Fiber weight to liquid weight) becomes 1 to 12, and liquid is injected up to the liquid surface 17, and score roll 400 (manufactured by Kao Corporation, nonionic surfactant) is adjusted to 0.5 g / liter from the auxiliary tank 9. To inject
The pump 10 in the direction of the arrow in which the liquid flow indicates the circulation path, and
It was operated so that the flow rate was 30 liters / minute. The temperature of the liquid was adjusted to 50 ° C. by the heat exchanger 11, and after the treatment for 10 minutes, the liquid was discharged through the drain pipe 12.

Next, pure water was injected so that the liquid ratio became 1:12, and concentrated sulfuric acid was gradually injected until the pH of the aqueous solution reached 4.0 while operating the pump in the same manner as above. Liquid temperature is 2
It is 5 ° C. Next, pure oxygen is used, and an ozone-containing gas from the ozone generator 13 by discharge has an ozone concentration of 30,000 ppm and a flow rate of 2 liters / minute, and a gauge pressure of 1.0 kgf /
It was injected into the aqueous solution from the nozzle 14 at a cm ² .

The ozone concentration of the treatment liquid 5 minutes after the injection was 15.
At 1 mg / liter, ozone-containing gas was injected for 10 minutes to maintain this concentration, treated for a total of 15 minutes, and drained. During the ozone treatment, the waste ozone gas was collected in the space 18 above the treatment tank, passed through the exhaust pipe 15, and was discharged into the atmosphere after being treated by the waste ozone gas treatment device 16 using activated carbon. Ozone-treated wool yarn is washed with water, and then trade name Ranille Red GG, 2.0% and trade name Sumipon WB, 2.0%
(Both manufactured by Sumitomo Chemical Co., Ltd., dyes and auxiliaries), ammonium sulfate, 2.0%, an aqueous solution of pH 4.0 with acetic acid, heated at a flow rate of 30 liters / minute, and dyed at 100 ° C. for 40 minutes. Then, after cooling and washing with water, the holder and the knitted fabric were taken out from the treatment tank, dehydrated and dried. The knitted fabric was dyed uniformly, and the pilling property of the knitted fabric at any position was grade 4.

[0023]

Comparative Example 1 The pilling property of the knitted fabric which was treated in the same manner as in Example 1 except that the ozone-containing gas was not injected was of the first grade.

[0024]

Example 2 A holder similar to that of Example 1 except that 1.0 kg of the same wool yarn as in Example 1 is used in a cone shape having an upper outer diameter of 4.0 cm and a lower outer diameter of 7.0 cm. And the winding density is 0.
It was wound so as to have a weight of 3 g / cm ³ , and the same nonionic surfactant treatment, concentrated sulfuric acid injection pH adjustment treatment and ozone treatment as in Example 1 were performed, dehydrated and dried. Then, a knitted fabric similar to that of Example 1 was knitted for each of the cone-shaped inner layer, middle layer, and outer layer, and the pilling property was measured.

[0025]

[Comparative Example 2] The same holder and treated fiber laminate as in Example 2 were subjected to the same nonionic surfactant treatment and concentrated sulfuric acid injection pH adjustment treatment as in Example 2, and then the holder and treated fiber laminate. Was taken out from the treated layer and dehydrated. Return the dehydrated liquid to the processing tank, inject the ozone-containing gas while circulating the aqueous solution,
When the ozone concentration of the treatment liquid reached 15.1 mg / liter, the holder and the fiber laminate to be treated were loaded into the treatment tank.

However, even if the pump is operated, the treatment liquid and a part of the ozone-containing gas that is not dissolved in the treatment liquid do not easily pass through the inter-fiber voids of the fiber laminate, so that the holding liquid forms part of the support. The lid 6 on the upper part of the tool was opened, and the treatment liquid and a part of the ozone-containing gas undissolved in the treatment liquid passed from this portion and were charged so as to circulate. Then, the ozone concentration of the treatment liquid is 15.1 m
While injecting an ozone-containing gas so as to maintain g / l, ozone treatment was performed for 15 minutes, followed by dehydration and drying.
The same knitted fabric as in Example 2 was knitted into each of the cone-shaped layers and the pilling property was measured. As a result, the outermost layer was grade 4, but the other layers were grade 2, and the effect was low.

[0027]

According to the apparatus of the present invention, compared with the conventional apparatus, it is possible to perform ozone treatment using an aqueous solution as a medium without using an organic solvent, and to ensure environmental safety. As shown in Example 1, before and after the ozone treatment can be performed in the same treatment machine,
It is versatile. Further, as in the conventional technology example, since it is not an ozone treatment by stirring the textile product to be treated or the ozone-containing liquid, by exchanging the holder and the support of the holder, without being restricted to the fiber form, cotton-like, tow-like, Even top-shaped textile products can be treated with ozone using the same processing machine and are versatile.

In the examples, the results are obtained with a small tester of about 1 kg, but since the ozone-containing liquid is forced to pass through the interfiber spaces of the fiber laminate, the same effect can be obtained even if the size is increased. To be As can be seen in Example 2 and Comparative Example 2, it is difficult to uniformly treat the 1 kg of textile product with ozone simply by stirring the ozone-containing liquid, but the apparatus of the present invention enables uniform ozone treatment. Become.

Further, in another method of treating a fiber product with an ozone-containing gas in which the textile product is impregnated in the treatment liquid, squeezed, and the treatment liquid is held, the treatment liquid does not move on the surface of the fiber. Although the velocity is largely related to the boundary film resistance at the gas / liquid / solid interface, the device of the present invention can make the ozone-containing liquid on the fiber surface into a turbulent flow, and thus can accelerate the reaction rate. At the same time, ozone decomposing substances and water-soluble substances can be removed from the fiber surface at the same time.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing the concept of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Textile product to be treated 2 Cylindrical holder 3 Pore possessed by holder 4 Treatment tank 5 Support for fixing holder 6 Support for fixing holder 7 Lid 8 Water injection pipe 9 Attached tank 10 Pump 11 Heat exchanger 12 Drain pipe 13 Ozone generator 14 Ozone injection nozzle 15 Exhaust pipe 16 Waste ozone gas treatment device 17 Liquid level 18 Space

Claims (1)

[Claims] 1. An injecting and mixing tool for injecting, mixing, and dissolving an ozone-containing gas in a treatment liquid and a textile product to be treated are kept in a laminated state, and the treatment liquid can pass therethrough. A holder having pores through which the fiber product cannot pass, a treatment tank in which the holder and the fiber product to be treated can be loaded,
A space system for collecting waste ozone gas in the upper part of the processing tank, which is equipped with a circulation system and a pump for circulating the ozone-containing liquid so that the ozone-containing liquid passes through the voids of the processed textile products held in a laminated state, An ozone-containing liquid treatment device for a textile product, comprising an exhaust pipe for discharging waste ozone gas from the space to the outside of the treatment tank, a water injection pipe for injecting the treatment liquid into the treatment tank, and a drain pipe for discharging the treatment waste liquid.