WO2018128251A1

WO2018128251A1 - Supercritical carbon dioxide multi-stage dye mixing chamber using pulse

Info

Publication number: WO2018128251A1
Application number: PCT/KR2017/011576
Authority: WO
Inventors: 김희동; 이재형
Original assignee: (주)대주기계
Priority date: 2017-01-05
Filing date: 2017-10-19
Publication date: 2018-07-12
Also published as: CN110214207A; KR101737874B1

Abstract

The present invention relates to a supercritical carbon dioxide multi-stage dye mixing chamber using a pulse. The supercritical carbon dioxide multi-stage dye mixing chamber using a pulse comprises: a multi-stage receptacle body provided with an inlet port, for supercritical carbon dioxide to flow in, on the upper part and provided with an outlet port, for a mixture of the supercritical carbon dioxide and dye to flow out, on the lower part; a dye receptacle provided inside the receptacle body and having the dye to be mixed with the supercritical carbon dioxide filled therein; a pulse generating means for providing a pulse to the supercritical carbon dioxide supplied to the receptacle body; and a vortex generating means provided on the inlet port of the receptacle body and for providing a vortex to the supercritical carbon dioxide flowing into the receptacle body. By means of the technical constituents, the dye contained in the dye receptacle can completely be dissolved, the supercritical carbon dioxide dyeing efficiency can be enhanced by means of the improved mixing of the dye, and the marketability of a supercritical carbon dioxide dyeing machine can greatly be enhanced.

Description

Supercritical CO2 Multistage Dye Mixing Chamber Using Pulsation

The present invention relates to a supercritical carbon dioxide multi-stage dye mixing chamber using pulsation, and more particularly, to efficiently mix supercritical carbon dioxide and dyes using pulsations and vortices to supply a dyeing tank, and to efficiently clean the dyeing process. It's about one thing.

In general, the temperature and vapor pressure in which the two states of liquid and gas are indistinguishable is called the critical point, and when the critical state is exceeded, that is, the substance is neither gas nor liquid, which is a supercritical fluid. It is called.

This supercritical fluid has inherent characteristics that are different from ordinary gases and liquids.

Supercritical fluids are intermediate in physical properties between gases and liquids, and can undergo rapid changes in physical properties due to slight changes in pressure and temperature, and have physical properties such as good diffusion and high mass transfer rates.

Supercritical carbon dioxide (Supercritical CO ₂ ) among supercritical fluids has been applied to various industrial processes in recent years because they have similar diffusivity and viscosity as gases, but have density characteristics close to those of liquids.

For example, the supercritical carbon dioxide dyeing machine properly uses the characteristics of the supercritical carbon dioxide, and uses a new dyeing method in which dyes are mixed with supercritical carbon dioxide to penetrate the fiber, which is different from conventional water-based dyeing using mainly water. It is a dyeing method.

In general, in the case of water-based dyeing, dyes are mixed with water to penetrate the fibers. Liquids such as water do not have good diffusivity, and therefore, it takes a considerable time to dye, and occurs during drying and dyeing of fibers after dyeing. There are problems such as waste water treatment, and dye desorption which occurs for a long time when washing the dyed fibers.

Compared with water-based dyeing, supercritical carbon dioxide dyeing does not use water at all, and it has the advantage of allowing dye to penetrate into the inside of the fiber tissue by using the thermal properties of supercritical carbon dioxide. In addition, since there is no water used in the dyeing process, there is no fear of dye desorption during drying or washing.

Patent Document 1 below discloses an industrial supercritical fluid dyeing machine.

Industrial supercritical fluid dyeing device of Patent Literature 1 is a dyeing tank means to which the spindle can be wound can be wound, flow conversion means for converting the supercritical fluid flow to the wound fiber to make a uniform and rapid dyeing, dye Dye tank means, supercritical fluid circulation circulating pump means for increasing the contact frequency between dye dissolved in supercritical carbon dioxide and fiber, heat exchanger means for heating or cooling supercritical fluid, dyeing apparatus by cooling carbon dioxide stored in storage tank Carbon dioxide supply means for supplying to the pressurized pump, carbon dioxide recovery means for decompressing and cooling the carbon dioxide after the dyeing process is completed and recovered to the storage tank with a recovery pump, and the like high pressure dyeing means connected to the high pressure pipe.

1 is a block diagram of a supercritical carbon dioxide dyeing machine according to the present invention.

The supercritical carbon dioxide dyeing machine 10 includes a liquid carbon dioxide storage tank 11, a carbon dioxide cooler 12, a high pressure carbon dioxide pump 13, a preheating heater 14, a mixing chamber 15, a dye bath 16, and a separator ( 17), gaseous carbon dioxide storage tank 18, and the like.

In the supercritical carbon dioxide dyeing machine 10 according to the present invention, the liquid carbon dioxide supplied from the liquid carbon dioxide storage tank 11 is supplied to the preheating heater 14 through the carbon dioxide cooler 12 and the high pressure carbon dioxide pump 13.

The preheater 14 heats the carbon dioxide in the liquid state to produce supercritical carbon dioxide at a desired operating temperature and pressure, and supplies it to the mixing chamber 15.

The mixing chamber 15 mixes a dye with carbon dioxide in a supercritical state and supplies it to the dye bath 16.

The dye bath 16 supplies a mixture of supercritical carbon dioxide and dye to the fabric, where the supercritical carbon dioxide permeates the dye into the fabric.

The supercritical carbon dioxide used in the dye bath 16 is supplied to the separator 17, and the separator 17 evaporates the carbon dioxide to remove excess dye and residues.

The gaseous carbon dioxide separated from the separator 17 is stored and reused in the gaseous carbon dioxide storage tank 18.

In FIG. 1, reference numeral 19 denotes a circulation pump.

As described above, the supercritical carbon dioxide dyeing machine 10 mixes the dye with the supercritical carbon dioxide in the mixing chamber 15 and supplies the dye to the dye bath 16. In this case, the dye must be mixed while maintaining the carbon dioxide in the supercritical state. Therefore, the shape of the mixing chamber 15 has a decisive influence on the performance of the supercritical carbon dioxide dyeing machine 10.

The mixing chamber 15 of the supercritical carbon dioxide dyeing machine 10 preferably has a structure capable of effectively dissolving the dye in the supercritical carbon dioxide by prolonging the contact time of the supercritical carbon dioxide and the dye and scattering the dye.

In addition, the mixing chamber 15 of the supercritical carbon dioxide dyeing machine 10 preferably has a structure that can minimize the pressure loss generated during the mixing of the dye.

Furthermore, the structure of the mixing chamber 15 should not be complicated to reduce the precipitation of residual dyes in the mixing chamber 15 and the dye bath 16 after finishing dyeing, and is advantageous for the cleaning operation of the mixing chamber 15. Should be

Currently, supercritical carbon dioxide dyeing machine has not been fully developed due to the lack of commercialized products, and the engineering chamber of the mixing chamber has not been sufficiently designed. It has a considerable adverse effect on the homogenization of the fiber.

In addition, since the dye remains in the mixing chamber after the dyeing process is completed, not only the loss of the dye but also a lot of difficulties in the post-dyeing cleaning process, it is very important to improve the mixing chamber so that the cleaning is effective.

2 is a schematic configuration diagram of a mixing chamber of a supercritical carbon dioxide dyeing machine according to the prior art.

As shown in FIG. 2, the mixing chamber 200 of the supercritical carbon dioxide dyeing machine according to the related art has a dye container 220 filled with dye inside the container body 210, and is supercritical on the upper portion of the container body 210. An inlet 211 through which carbon dioxide is introduced is provided, and an outlet 212 through which a mixture of supercritical carbon dioxide and dye is discharged is provided under the container body 210.

The mixing chamber 200 of the supercritical carbon dioxide dyeing machine according to the prior art is mixed with the dye while the supercritical carbon dioxide introduced through the inlet 211 of the container body 210 dissolves the dye filled in the dye container 220, The mixture of supercritical carbon dioxide and dye is discharged through the outlet 212 and supplied to the dye bath.

The mixing chamber of the supercritical carbon dioxide dyeing machine according to the prior art is a form in which the dye contained in the dye container is dissolved by the supercritical carbon dioxide flowing into the container body through the inlet port, but the dye is not dissolved well by the supercritical carbon dioxide. There was a problem that was adversely affected.

In addition, the mixing chamber of the supercritical carbon dioxide dyeing machine according to the prior art has a problem that the undissolved dye remains in the container body, the dye is lost, it is difficult to clean the container body after the dyeing operation.

The present invention is to solve the problem of the mixing chamber of the supercritical carbon dioxide dyeing machine according to the prior art, the purpose is to make the supercritical carbon dioxide supplied to the interior of the container body has a pulsating energy and thereby form a vortex It is to provide a supercritical carbon dioxide multi-stage dye mixing chamber using pulsation to dissolve the dye more effectively and to facilitate the cleaning after dyeing.

The present invention is a supercritical carbon dioxide having a pulsating energy and a dye is mixed for a sufficient time without pressure loss, the supercritical carbon dioxide with periodic pulsation and vortex is supplied to the dye to disperse the dye so that the dye is completely dissolved And it is to provide a supercritical carbon dioxide multi-stage dye mixing chamber using pulsation to be able to planarize the fiber.

In order to achieve the object as described above, the supercritical carbon dioxide multi-stage dye mixing chamber using the pulsation according to the present invention is provided with an inlet through which supercritical carbon dioxide flows in the upper part, and a mixture of supercritical carbon dioxide and dye in the lower part flows out. Container body is provided with an outlet; A dye container installed inside the container body and filled with a dye to be mixed with supercritical carbon dioxide; Pulsation generating means for imparting pulsation to supercritical carbon dioxide supplied to the container body; It is installed at the inlet of the container body vortex generating means for providing a vortex to the supercritical carbon dioxide flowing into the container body; characterized in that it comprises a.

The container body of the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to the present invention is characterized in that the second stage mixing portion is provided below the first stage mixing portion in which the dye container is incorporated.

In the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to the present invention, an inlet is provided at an upper portion of the first stage mixing portion, a connection passage connected to the second stage mixing portion is provided at the lower portion, and an inner center of the first stage mixing portion is provided. It is characterized in that the dye container is installed.

Supercritical carbon dioxide multi-stage dye mixing chamber using the pulsation according to the present invention is provided with a connecting passage in the upper portion of the second stage mixing portion, the outlet is provided with a mixture of supercritical carbon dioxide and dye in the lower portion, the hollow head inside Mushroom-like mixture inducing member having a hollow portion and the stem portion is characterized in that it is installed.

In the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to the present invention, the head of the mixture inducing member is located at the bottom of the connecting passage, and a stem having a diameter smaller than the head is provided between the bottom of the head and the top of the outlet. A plurality of discharge holes are provided in the outer circumference of the connection portion of the stem and the stem.

The vortex generating means of the supercritical carbon dioxide multistage dye mixing chamber using the pulsation according to the present invention is characterized in that the vortex generator is installed in the chamber.

The vortex generator of the supercritical carbon dioxide multistage dye mixing chamber using the pulsation according to the present invention is characterized in that the spiral projection is provided on the outer circumference to generate the vortex.

According to the supercritical carbon dioxide multistage dye mixing chamber using the pulsation according to the present invention, the dye contained in the dye container is completely dissolved because the dye is dissolved with supercritical carbon dioxide having pulsating energy and mixed for a sufficient time through the multistage mixing unit. It can melt | dissolve and accordingly the uniform dyeing of a fiber can be attained.

According to the supercritical carbon dioxide multi-stage dye mixing chamber using the pulsation according to the present invention, since there is no residual dye in the dye container and the container body, there is no loss of dye, and the cleaning and maintenance of the container body can be facilitated.

According to the supercritical carbon dioxide multi-stage dye mixing chamber using the pulsation according to the present invention, it is possible to increase the efficiency of the supercritical carbon dioxide dyeing through improving the mixing performance of the dye, it is possible to greatly improve the commerciality of the supercritical carbon dioxide dyeing machine.

1 is a block diagram of a supercritical carbon dioxide dyeing machine according to the present invention,

2 is a schematic configuration diagram of a mixing chamber of a supercritical carbon dioxide dyeing machine according to the prior art,

3 is a conceptual diagram illustrating a pulsation flow rate illustrating a change in flow rate over time of the present invention;

4 is a configuration diagram of a supercritical carbon dioxide multistage dye mixing chamber using pulsation according to a preferred embodiment of the present invention;

5A and 5B are graphs showing the dye solubility of the supercritical carbon dioxide dye mixing chamber according to the prior art and the dye solubility of the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to a preferred embodiment of the present invention.

Hereinafter, the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, "upward", "downward", "forward" and "rear" and other directional terms are defined based on the states shown in the figures.

3 is a conceptual diagram illustrating a pulsation flow rate illustrating a change in flow rate over time of the present invention.

Using a plunger pump, which is a reciprocating compressor, the flow rate is changed periodically to increase and decrease the pulsation. It supplies supercritical carbon dioxide in large quantities and repeatedly.

4 is a block diagram of a supercritical carbon dioxide multistage dye mixing chamber using pulsation according to a preferred embodiment of the present invention.

The supercritical carbon dioxide multi-stage dye mixing chamber 100 using pulsation according to a preferred embodiment of the present invention includes a container body 110, a dye container 120, a pulsation generating means, and a vortex generating means 130.

The container body 110 is a space where supercritical carbon dioxide and dye are mixed, and an inlet 111 through which supercritical carbon dioxide is introduced is provided at an upper portion thereof, and an outlet 112 through which a mixture of supercritical carbon dioxide and dye is discharged is provided at a lower portion thereof. Prepared.

The container body 110 is a form in which the second stage mixing portion 110b is provided below the first stage mixing portion 110a in which the dye container 120 is embedded.

The first stage mixing unit 110a is provided with an inlet 111 at an upper portion thereof, and a connection passage 113 connected to the second stage mixing unit 110b is provided at the lower portion thereof.

The dye container 120 is installed in the inner center of the first stage mixing unit 110a, wherein the gap between the outer circumferential surface of the dye container 120 and the inner circumferential surface of the first stage mixing unit 110a is formed to be narrow and mixed. It is desirable to minimize pressure loss during the transfer of the mixture of critical carbon dioxide and dye.

The second stage mixing unit 110b is a space for better mixing of the supercritical carbon dioxide and the dye during the transfer of the mixture of the supercritical carbon dioxide and the dye mixed in the first stage mixing unit 110a.

The second stage mixing unit 110b is provided with a connection passage 113 at an upper portion thereof, and an outlet 112 through which a mixture of supercritical carbon dioxide and dye is discharged is provided at the lower portion thereof.

Inside the second stage mixing portion 110b, a mushroom-like mixture inducing member 114 having a hollow head portion 114a and a hollow stem portion 114b is installed.

The head portion 114a of the mixture inducing member 114 is located under the connecting passage 113, and the stem portion 114b having a diameter smaller than the head portion 114a has a lower end and an outlet 112 of the head portion 114a. A plurality of discharge holes 114c are provided at the outer circumference of the connection portion between the head portion 114a and the stem portion 114b.

The dye container 120 is filled with a dye to be mixed with supercritical carbon dioxide, and is installed inside the first stage mixing unit 110a.

The pulsation generating means imparts pulsation to the supercritical carbon dioxide supplied to the inlet of the container body 110, and its detailed configuration will be omitted since it will be apparent to those skilled in the art.

The vortex generating means 130 is for imparting vortices to the supercritical carbon dioxide flowing into the first stage mixing unit 110a and is provided at the front end of the inlet 111 of the first stage mixing unit 110a.

The vortex generating means 130 is a form in which the vortex generator 132 is installed inside the chamber 131, and in this case, the vortex generator 132 is preferably provided with a spiral protrusion 132a on the outer circumference to generate the vortex. Do.

When pulsation is generated such that a large amount of supercritical carbon dioxide is supplied through the pulsation generating means as shown in FIG. 3, a large amount of supercritical carbon dioxide flows along the spiral protrusion 132a formed on the outside of the vortex generator 132 and the vortex generator 132 ) Rotates and the supercritical carbon dioxide flows into the dye at a relatively high pressure as the vortex is generated, dissolving the dye while scattering the dye, and then the vortex generator 132 is in the process of flowing at a relatively small pressure. On the contrary, the dye is dissolved efficiently by repeating the process of generating the vortex once again while rotating and descending.

In addition, even after the dyeing process to clean the residual dye before using a new color dye, efficient cleaning is possible through the above-described periodic process of large supply and small supply.

Supercritical carbon dioxide multi-stage dye mixing chamber 100 using a pulsation according to a preferred embodiment of the present invention is a pulsation in the supercritical carbon dioxide introduced into the first stage mixing unit 110a, the dye container 120 is installed in the multi-stage mixing space And by imparting a vortex, the supercritical carbon dioxide mixes well with the dye.

That is, the supercritical carbon dioxide imparted with pulsation through the pulsation generating means has a vortex in the process of passing through the vortex generating means 130 provided at the inlet 111 of the first stage mixing unit 110a, and the pulsation and vortex The eggplant supercritical carbon dioxide acts on the dye filled in the dye container 120 so that the dye is well dissolved in the supercritical carbon dioxide.

In the supercritical carbon dioxide multi-stage dye mixing chamber 100 using the pulsation according to the preferred embodiment of the present invention, the supercritical carbon dioxide and dye mixture primarily mixed in the first stage mixing unit 110a maintains the supercritical state. In the second stage mixing unit 110b is moved through the connection passage 113 without pressure loss, and the second stage mixing unit 110b can be more completely mixed in the second.

That is, the mixture of supercritical carbon dioxide and dye entering the second stage mixing unit 110b through the connecting passage 113 is the head portion 114a of the mixture inducing member 114 provided at the lower portion of the connecting passage 113. Bump into the inner circumferential surface of the second stage mixing portion (11b) is lowered, and rises along the outer circumferential surface of the stem portion 112 provided between the lower end of the head (114a) and the upper end of the outlet 112, the head After entering the inside of the stem portion 114b through a plurality of discharge holes 114c provided around the outer periphery of the connection portion 114a and the stem portion 114b, the outlet portion 112b flows out.

As such, the mixture of supercritical carbon dioxide and dye introduced into the second stage mixing part 114b is more completely moved in the process of moving along the outer periphery of the head part 114a and the stem part 114b of the mixture inducing member 114. The mixture of supercritical carbon dioxide and dye is supplied to the dye bath through the outlet 112.

5A is a dye solubility of the supercritical carbon dioxide dye mixing chamber according to the prior art, and FIG. 5B is a graph showing the dye solubility of the supercritical carbon dioxide multistage dye mixing chamber using pulsation according to a preferred embodiment of the present invention.

In the case of the supercritical carbon dioxide dye mixing chamber according to the prior art, as shown in FIG. 5A, the supercritical carbon dioxide and the dye are not completely dissolved in the mixing chamber, and the dye flows out without being completely dissolved.

Therefore, not only has a significant adverse effect on the uniform dyeing of the fibers, but also the dye remains in the mixing chamber, there is a loss of the dye, it takes a relatively long time to clean the mixing chamber.

Compared to this, in the supercritical carbon dioxide multistage dye mixing chamber 100 using pulsation according to the preferred embodiment of the present invention, supercritical carbon dioxide having pulsation energy is first mixed with the dye in the first stage mixing unit 110a, Since it is mixed secondly through the two-stage mixing section 110b, as shown in FIG. 5B, the dye can be completely dissolved.

Therefore, the supercritical carbon dioxide multi-stage dye mixing chamber 100 using the pulsation according to the preferred embodiment of the present invention can completely dissolve the entire dye contained in the dye container 120 and supply it to the dyeing tank so that the fiber can be uniformly dyed. In addition, since no dye remains in the mixing chamber 100, there is no loss of the dye, and the mixing chamber 100 is easily cleaned.

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

Claims

A container body 110 having an inlet 111 through which supercritical carbon dioxide flows in an upper portion thereof, and an outlet 112 through which a mixture of supercritical carbon dioxide and dyes flows out;

A dye container 120 installed inside the container body 110 and filled with a dye to be mixed with supercritical carbon dioxide;

Pulsation generating means for imparting pulsation to supercritical carbon dioxide supplied to the container body 110;

It is installed in the inlet 111 of the container body 110, the vortex generating means 130 for imparting a vortex to the supercritical carbon dioxide imparted with pulsation flowing into the container body 110; Supercritical CO2 Multistage Dye Mixing Chamber.
The method of claim 1,

The container body 110 is a supercritical carbon dioxide multi-stage dye mixture using pulsation, characterized in that the second stage mixing unit 110b is provided in the lower portion of the first stage mixing unit 110a in which the dye container 120 is embedded. Chamber. Sum chamber.
The method of claim 2,

The first stage mixing unit 110a is provided with an inlet 111 at an upper portion thereof, and a connection passage 113 connected to the second stage mixing unit 110b is provided at a lower portion thereof, and the first stage mixing unit 110a of the first stage mixing unit 110a is provided. Supercritical carbon dioxide multi-stage dye mixing chamber using pulsation, characterized in that the dye container 120 is installed in the inner center.
The method of claim 2,

The second stage mixing portion 110b is provided with a connection passage 113 at an upper portion thereof, and an outlet 112 through which a mixture of supercritical carbon dioxide and dye is discharged is provided at a lower portion thereof, and has a hollow head 114a therein. Supercritical carbon dioxide multi-stage dye mixing chamber using a pulsation, characterized in that the mushroom-shaped mixture inducing member 114 having a hollow stem portion (114b) is installed.
The method of claim 4, wherein

The head portion 114a of the mixture inducing member 114 is located under the connecting passage 113, and the stem portion 114b having a diameter smaller than the head portion 114a has a lower end and an outlet 112 of the head portion 114a. A supercritical carbon dioxide multi-stage dye mixing chamber using pulsation, which is provided between the upper ends and provided with a plurality of discharge holes (114c) in the outer circumference of the connection portion of the head (114a) and the stem (114b).
The method of claim 1,

Vortex generating means 130 is a supercritical carbon dioxide multi-stage dye mixing chamber using a pulsation, characterized in that the vortex generator 132 is installed inside the chamber (131).
The method of claim 6,

Vortex generator 132 is a supercritical carbon dioxide multi-stage dye mixing chamber using a pulsation, characterized in that the spiral protrusion (132a) is provided on the outer circumference to generate a vortex.