TWI649478B - Supercharging system of supercritical fluid anhydrous dyeing machine - Google Patents

Abstract

The invention relates to a supercharging system of a supercritical fluid anhydrous dyeing machine, which comprises a supercritical fluid medium reservoir, a shut-off valve, a medium filter, a booster pump, a supercritical fluid high-pressure quality flow meter, and a high-pressure ball valve. It can directly measure and display the quality, density and temperature of supercritical fluid, and it can realize the predetermined setting of the required fluid quality, and transmit the quality information of the medium to be charged to the booster pump through the linkage control signal to achieve its start and stop. And the linkage control of the flow rate, so as to achieve a one-time accurate quantitative filling of the supercritical fluid medium required by the dyeing unit. The supercharging system of the supercritical fluid anhydrous dyeing machine of the present invention can avoid the fluctuations and changes caused by the existing and traditional methods to the dyeing process conditions during multiple pressure adjustment processes, and can thereby effectively reduce or reduce the cylinder difference and improve the product. It also has the characteristics of simple repeatability, high efficiency, no influence on dyeing process conditions, stability and reliability, and wide adaptability.

Description

Supercharging system of supercritical fluid anhydrous dyeing machine

The invention belongs to the technical field of manufacturing pressure vessels and textile dyeing and finishing equipment, and particularly relates to a supercharging system of a supercritical fluid anhydrous dyeing machine.

The traditional textile dyeing process requires a large amount of fresh water resources and chemicals, and its wastewater discharge is large, and its wastewater contains a large amount of residual dyes and toxic and hazardous chemicals, which causes very serious pollution to water areas and the ecological environment. The supercritical fluid anhydrous dyeing and finishing technology represented by the supercritical CO ₂ fluid dyeing and finishing technology uses supercritical CO ₂ fluid and other media instead of traditional water baths to dye, pretreat or finish the textiles. Therefore, the technology can completely realize the green, environmental protection, and ecological production of textiles from the source because it has no water consumption and no pollutants such as dyeing wastewater. It also has the advantages of energy saving and so on. It can be seen that the development of supercritical fluid anhydrous dyeing and finishing technology and its equipment system is a technological revolution to the traditional textile printing and dyeing industry, and it is necessary to break the bottlenecks and challenges of the industry's development due to water shortages and increasingly severe ecological and environmental pressures. It is of great significance to realize the sustainable development of the industry.

In recent years, the supercritical CO ₂ anhydrous dyeing technology of textiles has made significant progress and has begun to enter the commercialization stage. Therefore, the design and development of special equipment systems with high reliability and practicality is one of the key foundations for vigorously promoting the development of supercritical CO ₂ anhydrous dyeing technology and its industrial application. At present, the relevant supercritical fluid equipment systems for textile dyeing at home and abroad mostly use vertical or horizontal warp beams, and biaxial dyeing and rope-like processing modes.

For example, in Chinese invention patent "A production system and process for continuous dyeing using supercritical fluid" (CN101024922A), an integrated dyeing kettle and system are reported, which include interconnected supercritical fluid supply devices, dyeing cycles Device and supercritical fluid recovery device, wherein the dyeing cycle device includes at least two integrated dye dyeing kettles, the integrated dye dyeing kettle enables the simultaneous dissolution of dyes in the same kettle, and the supercritical fluid pressure is 10-45Mpa The dyeing process is completed at a temperature of 100-180 ° C.

The Chinese invention patent of "Method and Apparatus for Treating Textile Substrate with Supercritical Fluid" (CN1200153A) introduces a vertical warp beam high-pressure dyeing kettle and system for dyeing packaged yarn bobbins or rolled annular fabrics. Controlled adjustment of processing temperature and time allows dyeing at constant pressures such as 280 bar and elevated processing temperatures.

In the Chinese patent “A supercritical fluid processing device for textiles” with publication number CN2688735, a horizontal warp beam multifunctional processing device with a fluid circulation system is disclosed, which is composed of a gas cylinder, a bus bar, and a pressure pump. , Preheater, high-pressure dyeing kettle, heat exchanger, separator, dye dissolution kettle, two-way circulation pump and control valve, can achieve uniform dyeing of fabrics under certain system pressure and temperature conditions. At the same time, in the Chinese invention patent with a publication number of CN101824716A "A device and method for dyeing fabrics with supercritical carbon dioxide fluid", a special seamless warp beam composed of inner and outer layers is disclosed, and the outermost layer of the wound fabric is set. Seamless woven cylindrical mesh cloth, under the conditions of supercritical carbon dioxide fluid pressure of 10MPa ～ 30Mpa and temperature of 90 ℃ ～ 140 ℃, adopt the dyeing process of fluid circulation and fluid static phase to achieve supercritical carbon dioxide fluid. Even dyeing of piece-dyed fabrics. In the Chinese invention patent with a publication number of CN102747566A "a fabric rope dyeing machine and a dyeing method using a supercritical carbon dioxide fluid as a medium", it is disclosed that the cloth lifting wheel system is set in the dyeing tank and is pulled by the guide wire. The action jointly drives the rope fabric to carry out an orderly circular motion, and reasonably controls the process parameters such as the dyeing fluid circulation flow rate, the fabric circulation speed, the dyeing temperature and the pressure, so as to achieve the dyeing of the rope fabric in the supercritical carbon dioxide fluid medium. In addition, the Chinese invention patent “Supercritical Dyeing Machine” with publication number CN101760914A also discloses a fabric rope dyeing machine with a dyeing circulation system, cloth feeding system, separation and recovery system, etc. Anhydrous dyeing process without tension.

It can be seen that, in the above-disclosed processing equipment systems of various types of supercritical fluid anhydrous dyeing and the use methods thereof, generally at a certain temperature, the dissolution and dyeing behavior of the dye is controlled by adjusting the medium pressure in the system, so that Achieve dyeing and processing of textiles. However, in the actual dyeing process, especially in the process of pressurizing the system, it is often impossible to accurately pressurize the medium that enters the system once, and when the system warms up to the dyeing temperature, it just reaches the required dyeing pressure. Therefore, at present, it is usually combined with previous experience, and when the temperature of the system reaches or is about to reach the dyeing temperature, the system is continuously pressurized or decompressed for multiple times. Obviously, this pressurization mode of the system medium has great unreliability and inaccuracy, which not only makes the operation of the dyeing process complicated and tedious, but also more importantly during multiple pressure adjustment processes It can make the dyeing process conditions fluctuate and change, especially when the pressure is adjusted, it is easy to cause the change of dyeing temperature and time, so that the cylinder difference of the product becomes larger, the repeatability becomes difficult to control, and it also affects the authenticity rate and Application and promotion of its industrial production.

In view of the above-mentioned shortcomings, the designer actively researches and innovates in order to create a new-type supercritical fluid anhydrous dyeing machine pressurization system, making it more industrially valuable.

In order to solve the above technical problems, an object of the present invention is to provide a supercharging system for a supercritical fluid anhydrous dyeing machine, which is a tank charging and pressurizing system in a quality measurement mode, which can realize a one-time accurate can filling of the supercritical fluid anhydrous dyeing machine It is pressurized and has the advantages of high efficiency, easy operation, no influence on the dyeing process conditions, small product cylinder difference, good repeatability, stability and reliability, and wide application range.

The supercharging system of the supercritical fluid anhydrous dyeing machine of the present invention comprises a supercritical fluid medium reservoir, a booster pump, a supercritical fluid high-pressure quality flow meter, and a high-pressure ball valve connected in sequence through a high-pressure pipeline.

The supercritical fluid medium reservoir has a medium outlet, and the medium outlet is connected to the shutoff valve through the high-pressure pipeline.

An inlet end of the booster pump is connected to the supercritical fluid medium reservoir, and an outlet end is in communication with the supercritical fluid high-pressure mass flowmeter, and its start-stop is controlled by the supercritical fluid high-pressure mass flowmeter.

An inlet end of the supercritical fluid high-pressure quality flowmeter communicates with the booster pump through the high-pressure pipeline, and an outlet end communicates with the high-pressure ball valve through the high-pressure pipeline. The supercritical fluid high-pressure quality flowmeter also communicates with The booster pump is linked and controlled to control the start and stop of the booster pump through linkage control signals such as measurement, transmission, and transmission of supercritical fluid quality, density, and temperature, and a predetermined setting of the required fluid quality.

One end of the high-pressure ball valve is in communication with the supercritical fluid high-pressure mass flowmeter through the high-pressure pipeline, and the other end is used for connecting with the dyeing unit to fill the quantitative tank of the dyeing medium required by the dyeing unit.

Further, a shut-off valve and a medium filter are connected in series to the high-pressure pipeline between the supercritical fluid medium reservoir and the booster pump, wherein the inlet end of the booster pump is in communication with the medium filter.

Further, the supercritical fluid medium storage also has a medium inlet, and the medium inlet is connected to a gas source.

Further, the gas source enters the supercritical fluid medium reservoir through a high-pressure pipeline, a shut-off valve, and is processed by a condenser.

Further, the medium inlet is set at 10-50 cm (cm) from the top of the supercritical fluid medium reservoir, and the medium outlet is set at 5-50 cm (cm) from the bottom of the supercritical fluid medium reservoir. ).

Further, the applicable pressure of the supercritical fluid high-pressure quality flow meter is 0-70 MPa, and the temperature is -50 ° C-150 ° C.

Further, the booster pump is one of a gas booster pump, a liquid booster pump, a high-pressure plunger pump, and a diaphragm pump.

Further, the dyeing unit may be connected to a separation and recovery device, and the separation and recovery device is connected to the condenser through a shutoff valve.

Further, a shut-off valve for accessing the air source and a shut-off valve connected to the separation and recovery device are connected to the condenser through a high-pressure three-way pipe.

Further, the dyeing unit is a fixed high-pressure dyeing tank or a mobile high-pressure processing container.

With the above solution, the present invention has at least the following advantages:

Due to the use of a tank filling pressurization system in the quality measurement mode, it can effectively achieve a one-time accurate tank filling pressurization of the dyeing medium in the supercritical fluid anhydrous dyeing machine, thereby overcoming the unreliability and inaccuracy of the traditional method. It also makes the dyeing operation process simple and scientifically feasible. In addition, the use of the canister charging and pressurizing system of the present invention can avoid the fluctuations and changes in the dyeing process conditions caused by the existing and traditional methods during multiple pressure adjustment processes, and thus It can effectively reduce or reduce the cylinder difference and improve the repeatability of the product. Therefore, the present invention can significantly improve the production and processing efficiency and the authenticity rate of anhydrous dyeing products, and has a significant effect on solving the production and discharge of pollutants in the textile printing and dyeing industry from the source. The characteristics of ecological environment protection and clean production have a very broad application prospect in the energy saving, emission reduction and clean production of the textile printing and dyeing industry.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and can be implemented according to the contents of the description, the following describes in detail the preferred embodiments of the present invention and the accompanying drawings.

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

Referring to FIG. 1, a supercharging system for a supercritical fluid anhydrous dyeing machine according to a preferred embodiment of the present invention includes a supercritical fluid medium reservoir 1, a shut-off valve 2, a medium filter 3, and a high-pressure pipeline connected in sequence. Booster pump 4, supercritical fluid high-pressure quality flow meter 5, and high-pressure ball valve 6.

The supercritical fluid high-pressure quality flow meter 5 communicates with the high-pressure ball valve 6 through a high-pressure pipe in the direction of the fluid outlet end, and communicates with the booster pump 4 through the high-pressure pipe at the fluid inlet end, which can directly realize the quality, density and temperature of the supercritical fluid. Measurement and display, and can realize the predetermined setting of the required fluid quality, and then realize the linkage control of the start and stop of the booster pump 4 through the linkage control signal 5-1 of the supercritical fluid high pressure quality flow meter 5 and the booster pump 4 In order to achieve the quantitative quality can filling of the supercritical fluid medium in the dyeing unit 7.

The high-pressure ball valve 6 communicates with the dyeing unit 7 through one end of the high-pressure pipe, and the other end is connected with the supercritical fluid high-pressure mass flowmeter 5 and communicates with the pressurizing system and the dyeing unit 7 through its opening, thereby realizing the dyeing unit 7 Dosing cans.

The booster pump 4 can be a gas or liquid booster pump, or a high-pressure plunger pump or a diaphragm pump, and its outlet is connected to the supercritical fluid high-pressure quality flow meter 5 through a high-pressure pipeline. Its start-stop and flow rate are controlled by the linkage control signal 5-1 output from the front supercritical fluid high-pressure mass flowmeter 5 to achieve the quantitative tank filling of the dyeing unit 7. The inlet end is in communication with the medium filter 3 to realize and ensure the purification and impurity removal treatment of the medium to be filled in the tank.

The supercritical fluid medium reservoir 1 is provided with a medium outlet 1-1 and a medium inlet 1-2, wherein the medium outlet 1-1 is located 5-50 cm (cm) from the bottom of the supercritical fluid medium reservoir 1 and passes through The high-pressure pipeline is connected to the shut-off valve 2, and at the same time, the shut-off valve 2 is connected to the medium filter 3. The medium inlet 1-2 is set at 10-50 cm (cm) from the top of the supercritical fluid medium reservoir 1, and passes through the high-pressure pipeline. It is connected with the shut-off valve 12 and the condenser 11 in order to achieve the functions of receiving, storing and outputting the medium gas source.

The applicable dyeing unit 7 can be various high-pressure dyeing cylinders of different forms, different shapes, and different capacities, and can also be a movable high-pressure processing container for textile dyeing, pre-treatment or post-treatment. One end is connected to the high-pressure ball valve 6, and the other end may or may not be connected to the separation and recovery device 8, the shut-off valve 9, and the condenser 11 in sequence.

The medium gas source required by the pressurization system is connected to the system through the high-pressure three-way pipe 10-1 and the shut-off valve 10, and after being processed by the condenser 11, it enters the supercritical fluid medium reservoir 1 for storage and backup.

When the supercritical fluid anhydrous dyeing machine pressurization system of the present invention works, firstly close the shut-off valves 9, 13, 2 and open the shut-off valves 10, 12 and the condenser 11, and pass the high-pressure three-way pipe 10-1 from the medium gas source to The supercritical fluid medium reservoir 1 is used for filling the storage medium. After completion, the shut-off valve 10 is closed, and the gas source is disconnected. Connect the dyeing unit 7 with the high-pressure ball valve 6 in the pressurization system through a high-pressure pipeline, and preset the quality of the medium required for dyeing on the supercritical fluid high-pressure mass flowmeter 5, then open the shut-off valve 2, open the high-pressure ball valve 6, and start the ultra The critical fluid high-pressure mass flowmeter 5 performs a quantitative tank filling of the dyeing unit 7 on the dyeing unit 7. At the same time, the supercritical fluid high-pressure mass flowmeter 5 monitors and displays the temperature, density, transient and cumulative flow of the medium passed, and transmits the quality information of the medium to be filled to the booster through the linkage control signal 5-1. The pump 4 realizes the linkage control of the start-stop and the flow rate, thereby achieving a one-time accurate quantitative filling of the supercritical fluid medium required by the dyeing unit 7. When the predetermined tank filling medium quality is reached, the booster pump 4 automatically stops the pump, and then closes the ball valve 6 to complete the quantitative tank filling of the dyeing unit 7.

For fixed-type dyeing units, the dyeing unit can be heated and the dyeing process can be completed according to a predetermined dyeing process. As for the mobile dyeing unit, it can be disconnected from the pressurization system and then moved to a suitable device for temperature dyeing. At the same time, the supercharging system can repeat the above process to continue to perform quantitative tank filling on other dyeing units to be filled in order to achieve efficient use of the supercharging system.

In addition, whether it is a stationary dyeing unit or a mobile dyeing unit, it can be connected to a separation and recovery device after dyeing to complete the separation and recycling of the dyeing medium and residual dyes, as well as the post-dyeing treatment of the product.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the technical principles of the present invention. And modifications, these improvements and modifications should also be regarded as the protection scope of the present invention.

1‧‧‧ Supercritical fluid medium reservoir

1-1‧‧‧medium export

1-2‧‧‧Media Import

2, 9, 10, 12, 13‧‧‧ globe valve

3‧‧‧ Media Filter

4‧‧‧ booster pump

5‧‧‧Supercritical fluid high pressure quality flowmeter

5-1‧‧‧ linkage control signal

6‧‧‧ high pressure ball valve

7‧‧‧ Dyeing Unit

8‧‧‧Separation and recovery device

10-1‧‧‧High Pressure Tee Pipe

11‧‧‧ condenser

FIG. 1 is a schematic diagram of the working principle of a supercritical fluid dyeing machine according to an embodiment of the present invention.

Claims (10)

A supercharging system for a supercritical fluid anhydrous dyeing machine, comprising: a supercritical fluid medium reservoir, a booster pump, a supercritical fluid high-pressure quality flow meter, and a high-pressure ball valve connected in sequence through a high-pressure pipeline; The fluid medium reservoir has a medium outlet; the inlet end of the booster pump is connected to the supercritical fluid medium reservoir, the outlet end is in communication with the supercritical fluid high-pressure quality flow meter, and the supercritical fluid is of high-pressure quality The flowmeter controls its start and stop; the inlet end of the supercritical fluid high-pressure quality flowmeter communicates with the booster pump through the high-pressure pipeline, and the outlet end communicates with the high-pressure ball valve through the high-pressure pipeline. The fluid high-pressure quality flow meter is also connected with the booster pump in a controlled manner, and controls the quality of the supercritical fluid flowing through, measuring, transmitting, and setting a predetermined setting of the required fluid quality to control the fluid. Start-stop of the booster pump; one end of the high-pressure ball valve passes through the high-pressure pipeline and the high-pressure mass flow of the supercritical fluid Communication, and the other end for connection with the dyeing units, quantitative staining of the tank desired dyeing medium charging unit. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 1 of the scope of patent application, wherein a high-pressure pipeline between the supercritical fluid medium storage and the booster pump is further connected with a shut-off valve and a medium filter in series. Wherein, the inlet end of the booster pump is in communication with the media filter, and the media outlet is connected with the shut-off valve through the high-pressure pipeline. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 1 of the scope of the patent application, wherein the supercritical fluid medium storage further has a medium inlet, and the medium inlet is connected to a gas source. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 3 of the scope of patent application, wherein the gas source enters the supercritical fluid medium reservoir through a high-pressure pipeline, a shut-off valve, and after being processed by a condenser. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 3 or 4 of the scope of patent application, wherein the medium inlet is set at 10-50 cm from the top of the supercritical fluid medium reservoir, and the medium outlet It is located at a distance of 5-50 cm from the bottom of the supercritical fluid medium reservoir. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 1 of the scope of the patent application, wherein the supercritical fluid high-pressure mass flowmeter has a pressure of 0-70MPa and a temperature of -50 ° C-150 ° C. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 1 of the scope of patent application, wherein the booster pump is one of a gas booster pump, a liquid booster pump, a high-pressure plunger pump, and a diaphragm pump. According to the supercharging system of the supercritical fluid anhydrous dyeing machine according to item 4 of the scope of the patent application, the dyeing unit may also be connected to a separation and recovery device, and the separation and recovery device is connected to the condenser through a shut-off valve. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 8 of the scope of patent application, wherein the shut-off valve used to access the air source and the shut-off valve connected to the separation and recovery device are connected to The condenser is connected. The supercharging system of the supercritical fluid anhydrous dyeing machine according to item 1 or 9 of the scope of the patent application, wherein the dyeing unit is a fixed high-pressure dyeing tank or a mobile high-pressure processing container.