CN1766194A - Supercritical carbon dioxide dyeing device and its process - Google Patents
Supercritical carbon dioxide dyeing device and its process Download PDFInfo
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- CN1766194A CN1766194A CNA2005100477670A CN200510047767A CN1766194A CN 1766194 A CN1766194 A CN 1766194A CN A2005100477670 A CNA2005100477670 A CN A2005100477670A CN 200510047767 A CN200510047767 A CN 200510047767A CN 1766194 A CN1766194 A CN 1766194A
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- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 132
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 130
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The invention discloses a supercritical carbon dioxide dyeing device, which comprises mainly a CO2 storage tank (H01), a dye kettle (H06), and a dyeing kettle (H07). Wherein, the dyeing technique comprises: cooling the CO2 from HO1 into liquid to send into preheater (HO5) connected to HO6 with carbon-dioxide high-pressure pump (HO4); sending supercritical carbon dioxide to HO7 by HO6; driving the dyed carbon dioxide to pass separator (HO8) and second condenser (HO9) and return to said storage tank (HO1). This invention can recycle 100% residual dye and carbon dioxide as dyeing medium, saves water and dye resource, and reduces pollution.
Description
Technical field
The present invention relates to the dyeing apparatus used in a kind of weaving, the dyeing and finishing industry, more particularly, relate to a kind of device that utilizes supercritical fluid carbon dioxide to realize dyeing.
Background technology
Traditional textile dyeing and finishing industry water is seriously polluted, and the problem that resource environment is destroyed is outstanding.Though at present each enterprise has taked corresponding sewage water treatment method, the actual effect that dyeing and printing sewage is handled is still not ideal enough, severe contamination water resource environment, jeopardize people's life and health.In recent years, the research of waterless staining technique all is being devoted in countries in the world.Along with rapid development of modern science and technology, supercritical fluid technique is subjected to the attention of world many countries day by day, and is applied to gradually in numerous industries such as chemical industry, biology, medicine, environmental protection, cosmetics, health, food, printing and dyeing, new material.
1991, German Jasper company cooperated with textile research center, German northwest, makes the dyeing machine of first semi-industrial scale, and this equipment does not have the function that makes the carbon dioxide circulation.1994, wherein CO 2 dyeing machine of Jasper company was used for polyester sewing yarn dyeing, but exposes many problems at this machine of operational phase, and this equipment can not make the dye liquor circulation, and dyeing efficient is low.At the beginning of nineteen ninety-five, a new CO 2 dyeing experimental facilities has been built at textile research center, German northwest, can separate and go out excess dyestuff and spinning oil in dyeing course, and is furnished with carbon dioxide and recycles system.But it is thorough inadequately to the extraction of superfluous dye well spinning oil.From nineteen ninety-five, more and more denseer to the interest of this technology in the world, at first in the U.S. and Asia, later on again in Europe.China is starting late aspect the super critical CO 2 technology research.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of supercritical CO 2 dyeing device is provided, realize dyeing by utilizing supercritical fluid carbon dioxide, and gasification to supercritical carbon dioxide is set after dyeing, reclaim dyestuff, and reclaim the equipment that carbon dioxide is used for textile dyeing once more simultaneously, and realized the cycle operation of supercritical CO 2 dyeing, solved the with serious pollution problem of present textile dyeing and finishing industry water.
The present invention has constructed a kind of supercritical CO 2 dyeing device in order to address the above problem, and comprises carbon dioxide basin H01, dyestuff still H06, dyeing caldron H07, and connecting pipe, auxiliary valve body and indicating meter; Described carbon dioxide basin H01 is connected in CO 2 high pressure pump H04 by condenser system; Described CO 2 high pressure pump H04 is connected in the preheater H05 that carbon dioxide is transformed into supercriticality; Described preheater H05 is connected with the dyestuff still H06 that is used for dissolving dye by pipeline; Described dyestuff still H06 delivers to the supercritical carbon dioxide of dissolving dye to be connected with described dyestuff still H06 and realizes among the dyeing caldron H07 of dyeing; Melt after the dyeing among the described dyeing caldron H07 dyestuff is arranged carbon dioxide liquid successively by among the described carbon dioxide basin H01 that separator H08, the second condenser H09 return to the described second condenser H09 is connected that connects.
The invention described above supercritical CO 2 dyeing device, it further improves and is that described separator H08 is connected with the 3rd heat exchanger that is used for carbon dioxide gasification.
The invention described above supercritical CO 2 dyeing device, its further improvement are that also described condenser system comprises the first condenser H02 and the cryogen jar H03 that is connected with the described first condenser H02; Described cryogen jar H03 is connected with refrigeration unit; The described first condenser H02 also is connected with solvent tank.
The invention described above supercritical CO 2 dyeing device, its further improvement are that also described device also comprises the carbon dioxide steel cylinder H10 that carbon dioxide is provided to described carbon dioxide basin H01 by the second condenser H09.
The invention described above supercritical CO 2 dyeing device, its further improvement also be, described dyeing caldron be connected be used for dyeing course first heat exchanger of heat is provided and be used to dye finish after second heat exchanger of fast cooling.
The invention described above supercritical CO 2 dyeing device, its further improvement are that also described separator H08 and carbon dioxide steel cylinder H10 connect drier, flow device successively by same pipeline, and described flow device is connected in the described second condenser H09.
The present invention also provides above-mentioned supercritical CO 2 dyeing device to utilize supercritical carbon dioxide to realize the process of dyeing, in turn includes the following steps:
S1: liquid carbon dioxide is forced into 15-40Mpa by high-pressure pump, by heat exchanger pressurized liquid carbon dioxide is heated to 50-150 ℃ again; S2: the carbon dioxide of described pressurized, heated is sent in the dyestuff still of the dyestuff of packing in advance, mixes at 1000: 1 with the quality proportioning with dyestuff, fully contacts dissolving in 5-10 minute; S3: the supercritical carbon dioxide that has the dyestuff composition enters the dyeing caldron that textiles is housed and realizes dyeing.
Above-mentioned supercritical CO 2 dyeing device utilizes supercritical carbon dioxide to realize the process of dyeing, it further improves and is, also in turn include the following steps after step S3: S4: the supercritical carbon dioxide of finishing dyeing course is decompressed to 2-5Mpa through choke valve, heat exchanger is heated to number range 0-150 ℃, makes the dyestuff and the carbon dioxide separation of not dying to the greatest extent; Carbon dioxide then is gasified totally; S5: carbon dioxide is that 20-30 ℃, pressure are the condenser of 4-5Mpa by temperature, becomes liquid carbon dioxide and returns basin.
Above-mentioned supercritical CO 2 dyeing device utilizes supercritical carbon dioxide to realize the process of dyeing, and it further improves and is, also comprises step S6: textiles to be dyed is carried out the modification processing; Modification is handled and is comprised: at the modification of protein fibre fabric using plasma, select atmospheric condition and following technological parameter to be atmosphere air pressure 20～80 Pascals, processing time 2.5～15 minutes, 50～200 watts of processing powers; Adopt the enzyme preparation modification at cellulose base fiber fabric, select following technological parameter to be: pH value 4.5～5.0, consumption are 3 grams per liters, and configuration aqueous solution bath raio 1: 30, is taken out washing, oven dry by bath temperature 40-55 ℃ after 30-40 minute.
Above-mentioned supercritical CO 2 dyeing device utilizes supercritical carbon dioxide to realize the process of dyeing, and its further characteristics are: in step S1, liquid carbon dioxide is forced into 32Mpa, is heated to 1250C; In step S2, S3 process, the quality proportioning of dyestuff and textiles is 1: 500, at science fabric dyeing 15 minutes, at cellulose base fiber fabric dyeing 20 minutes, at protein fibre fabric dyeing 25 minutes; In step S4, carbon dioxide is decompressed to 1.5MPa, heats to 1300c through heat exchanger through choke valve; In step S5, carbon dioxide is cooled to 200C, is pressurized to 5Mpa through condenser.
Pass through technique scheme, supercritical CO 2 dyeing device of the present invention can be in dyeing course to the recovery of the dyestuff 100% of not set, and will recycle again as the carbon dioxide of dyeing medium simultaneously, this device can utilize supercritical carbon dioxide that the back fabric that dyes is carried out the cleaning of loose colour simultaneously.In sum, this supercritical CO 2 dyeing device and process thereof can conserve water and dyestuff resources, reduce environmental pollution, have characteristics efficient, environmental protection.In addition, this device makes dye-uptake height, the even dyeing of textile dyeing under the situation of strict control process parameters, and COLOR FASTNESS can reach more than 4 grades.
Description of drawings
Fig. 1 is a supercritical CO 2 dyeing device dyeing schematic flow sheet of the present invention.
Among the figure, H01 basin, H02 filter, H03 cryogen jar, H04 CO
2Pump, H05 preheater, H06 dyestuff still, H07 dyeing caldron, H08 separator, H09 condenser, H10 CO
2Steel cylinder, E1 E2 E3 E4 is a safety diaphragm; V01 V02 V03 V04 V05 V08 V09 V10 V19 is a stop valve; V06 V07 is a reset valve
The specific embodiment
The principle basis of dyeing apparatus of the present invention is that under the supercriticality, carbon dioxide has mass-transfer performance and solubility property preferably, for the material of nonpolar class good dissolving ability is arranged, and the carbon dioxide below critical point does not then have this ability.The above-critical state of so-called carbon dioxide is meant the duty of carbon dioxide under 31.1 ℃ of critical-point pressure 7.3MPa, critical point temperature.
Structure and operation principle according to the dyeing apparatus of the present invention of the feature development of above-mentioned supercritical carbon dioxide are as follows:
The whole peace of apparatus of the present invention functional classification comprises following system altogether:
1, coloring system: this is the main part of supercritical CO 2 dyeing device, and other subsystem all is system service for this reason.Capital equipment comprises dyeing caldron, dyestuff still, dyepump, circulating pump etc.
2, refrigeration system: form by refrigeration unit, cryogenic fluid pump, cryogen jar.Mainly provide institute's chilling requirement to each process section of coloring system.
3, hot system: form by heat exchanger, hot oil pump, heat-exchanger pump.Mainly provide institute's calorific requirement to each process section of CO 2 dyeing system.
4, instrument system: put detection control system one covers such as being furnished with complete pressure, temperature, flow, liquid level, the main composition: pressure measxurement and control; Temperature survey and control; Flow measurement; Level gauging; The control of switches such as high-pressure pump, dyepump, cryogenic fluid pump, heat-exchanger pump; Computer control system
5, carbon dioxide storage system: comprise carbon dioxide basin, drier, inflated hose, steel and clamp etc.
6, carbon dioxide separation recovery system: comprise separator, condenser, filter etc.
7, compression system: mainly form by high-pressure pump.
8, safety system: two cover safeguard protection designs are arranged, and one is the automatic chain stoppage protection of high-pressure pump outlet pressure superpressure, and another is the safety anti-explosive device.This two covers protection system provides maximum guarantee for the safety of system and operating personnel's personal safety under the situation of operating personnel's operate miss.
9, accessory system: comprise connecting pipe, auxiliary valve body and indicating meter, and electric block etc., electric block is used to load and unload the extractor end socket, can be time saving and energy saving.E1, E2, E3, E4 are safety diaphragm as shown in Figure 1; V01, V02, V03, V04, V05, V08, V09, V10, V19 are stop valve; V06, V07 are reset valve, and these valve bodies and indicating meter and control device are provided with as required, and be relevant with the technological parameter of concrete use.
For the situation of supercritical CO 2 dyeing device of the present invention better is described, each composition situation is described below in conjunction with accompanying drawing 1, peace workflow.
At first, the carbon dioxide that provides of carbon dioxide basin H01 becomes in the condenser system cooling and delivers to the preheater H05 that carbon dioxide is transformed into supercriticality by CO 2 high pressure pump H04 after liquid; Wherein, condenser system comprises the first condenser H02 and the cryogen jar H03 that is connected with the first condenser H02; Cryogen jar H03 is connected with refrigeration unit; The input that the first condenser H02 connects is connected with solvent tank.
Then, preheater H05 is connected with the dyestuff still H06 that is used for dissolving dye by pipeline; Dyestuff still H06 delivers to the supercritical carbon dioxide of dissolving dye among the dyeing caldron H07 that realizes dyeing.In order to realize the function that dyes, dyeing caldron be connected be used for dyeing course first heat exchanger of heat is provided and be used to dye finish after second heat exchanger of fast cooling.
Thereafter, melting the carbon dioxide liquid that dyestuff is arranged after the dyeing in the dyeing caldron returns among the described carbon dioxide basin H01 by separator H08, the second condenser H09 successively.Wherein, separator H08 is connected with the 3rd heat exchanger that is used for carbon dioxide gasification.
As required, this device also comprises the carbon dioxide steel cylinder 01 that carbon dioxide is provided to carbon dioxide basin H01 by the second condenser H09.In order to guarantee the purity of carbon dioxide, deliver among the carbon dioxide basin H01 by the second condenser H09 again after the carbon dioxide elder generation drying device drying that carbon dioxide that separator H08 is separated and carbon dioxide steel cylinder provide, the flowmeter monitoring.
In addition, each capital equipment is described as follows:
The structure of dyeing caldron is: the top is a full-open type screw thread quick-opening structure, adopts the viton seal ring sealing, and dyeing caldron inside is furnished with staining rack.There is hot-oil jacket the dyeing caldron outside, the heat demand when dyeing to satisfy, and heat regulation realizes by the DCS control system.Its function is: hold the textiles that needs dyeing, finish the supercritical carbon dioxide that has dyestuff contacts dyeing with textiles process.
The structure of dyestuff still: the top is a full-open type screw thread quick-opening structure, adopts the viton seal ring sealing, and dyestuff still inside is furnished with the dyestuff tube.There is hot-oil jacket the dyeing caldron outside, the heat demand when satisfying dissolving dye, and heat regulation realizes by the DCS control system.Function makes supercritical carbon dioxide fully contact with dyestuff and finishes course of dissolution for being used to hold solid dye.
The structure of separator: the separator end is the thread seal structure, adopts the sealing of butyronitrile rubber circle, and the outside is provided with the hot water jacket, and the bottom is provided with drain hole.Function: be used to separate and hold the dyestuff of separating out behind the carbon dioxide expenditure and pressure, in the import and export of separator, be provided with temperature detecting point and pressure detecting point.
Carbon dioxide condensing device structure: this equipment is coil exchanger, and the tube side medium is a carbon dioxide, and the shell side medium is an ethylene glycol.Function: the gaseous carbon dioxide pressure of finishing separation process is about 4-5MPa, temperature is about 20-30 ℃, the function of this equipment is exactly that carbon dioxide with gaseous state makes temperature be cooled to it below saturated vapour pressure temperature by heat exchange, thereby allows co 2 liquefaction flow back to basin.
The structure of preheater: this equipment is coil exchanger, and the shell side medium is a deep fat, and the tube side medium is a carbon dioxide.Function: this equipment will be heated to the value of setting through the liquid carbon dioxide of high-pressure pump pressurization, carbon dioxide be become meet the supercritical carbon dioxide of extraction process condition.
First heat exchanger structure is to adopt electric heating heat exchanger, and heating power 6Kw, heat medium are conduction oil.Function: provide heat to dye process, comprise preheater, dyestuff still, dyeing caldron.
The structural design of second heat exchanger has coil exchanger, and medium is an oil in the groove, and the tube side medium is a cryogen ethylene glycol.Function: after dyeing course finishes, the fast cooling of dyestuff still, dyeing caldron, preheater.
The structure of the 3rd heat exchanger adopts coil exchanger, and managing outer medium is hot water, and medium is a carbon dioxide in the pipe.Function: the carbon dioxide through the choke valve decompression is the stream-liquid two-phase flow body, has the dyestuff that does not separate fully simultaneously, after the heat exchanger heat exchange, carbon dioxide is gasified totally separates fully with dyestuff.
The function of CO 2 high pressure pump is that the carbon dioxide with liquid state is forced into more than the critical pressure by this equipment, reaches on the technology controlling and process pressure.
The structure of carbon dioxide basin is that the top has pressure detecting mouth, pressure safety valve interface, carbon dioxide liquid return hole, balance port etc.One side has the carbon dioxide outlet, and the bottom has blowoff valve.Function is: carbon dioxide storage.
Refrigeration unit adopts automatic combined refrigeration unit.Function: provide required cold to the carbon dioxide abstraction piece-rate system.
In addition, the instrument control structure of this device comprises:
1) pressure measxurement and control; Comprise pressure of storage tank, dyeing caldron inlet pressure, dyeing caldron outlet pressure, separator pressure etc.
2) temperature survey and control; Comprise dyeing caldron inlet temperature, dyeing caldron outlet temperature, dyestuff still outlet temperature, dyestuff still inlet temperature, separator inlet temperature, separator outlet temperature, carbon dioxide condensing temperature, ethylene glycol refrigerant temperature, hot oil machine temperature, water heater temperature.Wherein hot oil machine temperature, water heater temperature, ethylene glycol refrigerant temperature are the control displays temperature.
3) flow and level gauging; Be respectively applied for monitoring carbon dioxide flow and tank level.
4) control indicating device: the indication of capital equipment running status is positioned at the instrument board top, and the below is the power supply control and the indication of reporting to the police.
5) safety and interlock: native system has the chain shutdown safety system of a cover high-pressure pump outlet pressure superpressure.
6) computer display control program: can select panel meter or computer to show control by change-over switch, and can preserve easily and print data.
The operation principle of supercritical CO 2 dyeing device of the present invention is: liquid carbon dioxide is stored in the circulation basin, by the CO 2 high pressure pump liquid carbon dioxide is forced into more than the critical pressure, by heat exchanger pressurized liquid carbon dioxide is heated to more than the critical point temperature again, makes carbon dioxide be transformed into supercriticality.Postcritical carbon dioxide enters in the dyestuff still of the dyestuff of packing in advance, fully contacts with dyestuff and dissolves; The supercritical carbon dioxide that has the dyestuff composition makes dyestuff enter the inside of textiles by in the dyeing caldron that textiles is housed, and realizes dyeing course.The supercritical carbon dioxide of finishing dyeing course is heated through choke valve decompression, heat exchanger the carbon dioxide solvability is reduced, and impels the dyestuff and the carbon dioxide separation of not dying to the greatest extent, and dyestuff is stayed in the separator; Carbon dioxide then is gasified totally, and returns by condenser liquefaction becoming liquid carbon dioxide and participates in circulation next time in the basin.
Specific embodiment is as follows,
At first, liquid carbon dioxide is forced into 15-40Mpa (preferred 32Mpa) by high-pressure pump, by heat exchanger pressurized liquid carbon dioxide is heated to 50-1500C (preferred 1250C) again;
Secondly, the carbon dioxide of pressurized, heated is sent in the dyestuff still of the dyestuff of packing in advance, mixes at 1000: 1 with the quality proportioning with dyestuff, fully contacts dissolving in 5-10 minute;
Once more, the supercritical carbon dioxide that has the dyestuff composition makes dyestuff enter the inside of textiles by in the dyeing caldron that textiles is housed, and realizes dyeing course, and wherein the mass ratio of dyestuff and textiles is 1: 500.Science fabric dyeed 15 minutes usually, and cellulose base fiber fabric 20 minutes, protein fibre fabric can be realized dying in 25 minutes, and had good dye-uptake, level-dyeing property, and COLOR FASTNESS can reach 4 grades.
After this, the supercritical carbon dioxide of finishing dyeing course is through the choke valve pressure relief ranges, number range from the pressure values of dyeing caldron to 2-5Mpa, optimum value is 1.5Mpa, again through the heat exchanger 0-1500c that heats, about preferred 1300c, impel the dyestuff and the carbon dioxide separation of not dying to the greatest extent, dyestuff is stayed in the separator; Carbon dioxide then is gasified totally,
At last, the above-mentioned gas carbon dioxide liquefies by condenser, and its parameter comprises: temperature range 20-300C (preferred 200C), pressure 4-5Mpa (preferred 5Mpa) then becomes liquid CO 2 and returns basin.
The above-mentioned steps that circulates successively realizes dyeing cycle.
In addition, before dyeing, preferably treat and dye thing and carry out modification and handle, concrete method of modifying is: at the modification of protein fibre fabric using plasma.Select atmospheric condition and following technological parameter:
Atmosphere air pressure 20～80Pa, processing time 2.5～15min, processing power 50～200W adopt the enzyme preparation modification at cellulose base fiber fabric, select following technological parameter:
PH=4.5～5.0, consumption are 3g/L, the configuration aqueous solution, and bath raio 1: 30, is got cloth specimen, washing, oven dry by bath temperature 40-55 ℃ behind the 30-40min.
Can directly dye for chemical fibre
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of supercritical CO 2 dyeing device comprises carbon dioxide basin (H01), dyestuff still (H06), dyeing caldron (H07), and connecting pipe, auxiliary valve body and indicating meter; It is characterized in that described carbon dioxide basin (H01) is connected in CO 2 high pressure pump (H04) by condenser system; Described CO 2 high pressure pump (H04) is connected in the preheater (H05) that carbon dioxide is transformed into supercriticality; Described preheater (H05) is connected with the dyestuff still (H06) that is used for dissolving dye by pipeline; Described dyestuff still (H06) is delivered to the supercritical carbon dioxide of dissolving dye to be connected with described dyestuff still (H06) and is realized in the dyeing caldron (H07) of dyeing; Melt the carbon dioxide liquid successively in the described carbon dioxide basin (H01) that separator (H08), second condenser (H09) return to described second condenser (H09) is connected by connection that dyestuff is arranged in the described dyeing caldron (H07) after the dyeing.
According to the described supercritical CO 2 dyeing device of claim 1, it is characterized in that 2, described separator (H08) is connected with the 3rd heat exchanger that is used for carbon dioxide gasification.
According to the described supercritical CO 2 dyeing device of claim 1, it is characterized in that 3, described condenser system comprises first condenser (H02) and the cryogen jar (H03) that is connected with described first condenser (H02); Described cryogen jar (H03) is connected with refrigeration unit; Described first condenser (H02) also is connected with solvent tank.
According to the described supercritical CO 2 dyeing device of claim 1, it is characterized in that 4, described device also comprises the carbon dioxide steel cylinder (H10) that carbon dioxide is provided to described carbon dioxide basin (H01) by second condenser (H09).
5, require described supercritical CO 2 dyeing device according to claim 1-4 is arbitrary, it is characterized in that, described dyeing caldron be connected be used for dyeing course first heat exchanger of heat is provided and be used to dye finish after second heat exchanger of fast cooling.
6, require described supercritical CO 2 dyeing device according to claim 1-4 is arbitrary, it is characterized in that, described separator (H08) and carbon dioxide steel cylinder (H10) connect drier, flow device successively by same pipeline, and described flow device is connected in described second condenser (H09).
7, a kind of claim 1 is arbitrary requires described supercritical CO 2 dyeing device to utilize supercritical carbon dioxide to realize the process of dyeing, it is characterized in that, in turn includes the following steps:
S1: liquid carbon dioxide is forced into 15-40Mpa by high-pressure pump, by heat exchanger pressurized liquid carbon dioxide is heated to 50-150 ℃ again;
S2: the carbon dioxide of described pressurized, heated is sent in the dyestuff still of the dyestuff of packing in advance, mixes at 1000: 1 with the quality proportioning with dyestuff, fully contacts dissolving in 5-10 minute;
S3: the supercritical carbon dioxide that has the dyestuff composition enters the dyeing caldron that textiles is housed and realizes dyeing.
8, according to the process of the described supercritical CO 2 dyeing of claim 7, it is characterized in that, after step S3, also in turn include the following steps:
S4: the supercritical carbon dioxide of finishing dyeing course is decompressed to 2-5Mpa through choke valve, and heat exchanger is heated to number range 0-150 ℃, makes the dyestuff and the carbon dioxide separation of not dying to the greatest extent; Carbon dioxide then is gasified totally;
S5: carbon dioxide is that 20-30 ℃, pressure are the condenser of 4-5Mpa by temperature, becomes liquid carbon dioxide and returns described carbon dioxide basin.
9, according to the process of the described supercritical CO 2 dyeing of claim 7, it is characterized in that, also comprise step S6: textiles to be dyed is carried out the modification processing;
Modification is handled and is comprised:
At the modification of protein fibre fabric using plasma, select atmospheric condition and following technological parameter to be atmosphere air pressure 20～80 Pascals, processing time 2.5～15 minutes, 50～200 watts of processing powers;
Adopt the enzyme preparation modification at cellulose base fiber fabric, select following technological parameter to be: pH value 4.5～5.0, consumption are 3 grams per liters, and configuration aqueous solution bath raio 1: 30, is taken out washing, oven dry by bath temperature 40-55 ℃ after 30-40 minute.
10, according to the arbitrary process that requires described supercritical CO 2 dyeing of claim 7-9, it is characterized in that,
In step S1, liquid carbon dioxide is forced into 32Mpa, is heated to 125 ℃;
In step S2, S3 process, the quality proportioning of dyestuff and textiles is 1: 500; At science fabric dyeing 15 minutes, at cellulose base fiber fabric dyeing 20 minutes, at protein fibre fabric dyeing 25 minutes;
In step S4, carbon dioxide is decompressed to 1.5MPa, heats to 130 ℃ through heat exchanger through choke valve;
In step S5, carbon dioxide is cooled to 20 ℃, is pressurized to 5Mpa through condenser.
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