The invention relates to a separation, recycling and self-cleaning system of a supercritical fluid dyeing machine. The system includes a supercritical fluid medium reservoir, one or more parallel dyeing units, a high-pressure pump, a primary separator, a secondary separator and a membrane separator sequentially connected. A dyeing medium and residual dye in dyeing units can be efficiently separated and recycled simultaneously, and when the separation and recycling is finished, each dyeing unit can be directly opened so that the dyeing units and products can be cleaned after dyeing, thereby improving the production and processing efficiency of supercritical fluid waterless dyeing and achieving simple operations, complete separation, stability and reliability and a blowback self-cleaning. The invention has a broad application prospect and practical significance in fundamentally addressing generation and emission of pollutants in the textile printing and dyeing industry and realizing energy conservation, consumption reduction, emission reduction and clean production.

The invention relates to a separation, recycling and self-cleaning system of a supercritical fluid dyeing machine. The system includes a supercritical fluid medium reservoir, one or more parallel dyeing units, a high-pressure pump, a primary separator, a secondary separator and a membrane separator sequentially connected. A dyeing medium and residual dye in dyeing units can be efficiently separated and recycled simultaneously, and when the separation and recycling is finished, each dyeing unit can be directly opened so that the dyeing units and products can be cleaned after dyeing, thereby improving the production and processing efficiency of supercritical fluid waterless dyeing and achieving simple operations, complete separation, stability and reliability and a blowback self-cleaning. The invention has a broad application prospect and practical significance in fundamentally addressing generation and emission of pollutants in the textile printing and dyeing industry and realizing energy conservation, consumption reduction, emission reduction and clean production.

The invention discloses a mobile dyeing cup for supercritical fluid waterless dyeing and finishing. The dyeing cup achieves separate or simultaneous filling of the medium into multiple dyeing units, and simultaneous heating of the dyeing units for proofing processing. A medium outlet is provided at the lowest position of the bottom of the cup, and the inner surface of the dyeing cup is coated with polytetrafluoroethylene, to effectively reduce residual dye chemicals in the cup and improve the cleaning efficiency. The perforated baffle at the bottom of the cup effectively prevents a textile product from blocking the medium outlet during medium filling and outputting, so that the processing medium and residual dye chemicals can be smoothly discharged. Accordingly, defects of an existing fixed proofing device such as low utilization efficiency, complex cleaning and incapability of meeting the proofing requirements of commercial production are overcome.

The invention discloses a mobile dyeing cup for supercritical fluid waterless dyeing and finishing. The dyeing cup achieves separate or simultaneous filling of the medium into multiple dyeing units, and simultaneous heating of the dyeing units for proofing processing. A medium outlet is provided at the lowest position of the bottom of the cup, and the inner surface of the dyeing cup is coated with polytetrafluoroethylene, to effectively reduce residual dye chemicals in the cup and improve the cleaning efficiency. The perforated baffle at the bottom of the cup effectively prevents a textile product from blocking the medium outlet during medium filling and outputting, so that the processing medium and residual dye chemicals can be smoothly discharged. Accordingly, defects of an existing fixed proofing device such as low utilization efficiency, complex cleaning and incapability of meeting the proofing requirements of commercial production are overcome.

The invention relates to a multi-pipe quantitative medium filling system of a supercritical fluid waterless dyeing machine. The system comprises a supercritical fluid medium reservoir, a stop valve, and a medium filter sequentially connected by a high-pressure main pipe, and at least two filling branches independent of each other and connected to the medium filter. Each filling branch includes a booster pump, a supercritical fluid high-pressure mass flowmeter, a ball valve, and a dyeing unit sequentially connected along a medium forward direction by a high-pressure branch pipe. By using a mass-measurement filling system having multiple branches independent of each other, the invention can effectively realize simultaneous and accurate quantitative medium filling for separate dyeing units and differentiated filling for dyeing units with different medium masses, thus overcoming disadvantages such as unreliability, inaccuracy and low use efficiency of a conventional method, and also making a dyeing operation simple and scientifically feasible.

The invention relates to a multi-pipe quantitative medium filling system of a supercritical fluid waterless dyeing machine. The system comprises a supercritical fluid medium reservoir, a stop valve, and a medium filter sequentially connected by a high-pressure main pipe, and at least two filling branches independent of each other and connected to the medium filter. Each filling branch includes a booster pump, a supercritical fluid high-pressure mass flowmeter, a ball valve, and a dyeing unit sequentially connected along a medium forward direction by a high-pressure branch pipe. By using a mass-measurement filling system having multiple branches independent of each other, the invention can effectively realize simultaneous and accurate quantitative medium filling for separate dyeing units and differentiated filling for dyeing units with different medium masses, thus overcoming disadvantages such as unreliability, inaccuracy and low use efficiency of a conventional method, and also making a dyeing operation simple and scientifically feasible.

The present invention provides a production process characterized in that a false twisting process is added between a spinning process and a winding process so that yarn slivers undergo excessive pre-torsion in an axial direction and twists which are same in quantity but different in twisting direction are generated on the yarn slivers. Absorption of glucose-containing sulfur dyestuff is performed in a dyeing process. An ammonia removal process is performed in a high-temperature and high-pressure tank so that residual ammonia in a fabric is evaporated. The evaporated ammonia is collected and then fed back to a mercerizing process for continuous use. The present invention also provides a production line including a spinning unit having a false twisting device, a dyeing unit configured to realize the dyeing process, and a liquid ammonia finishing unit consisting of a fabric mercerizing device, an ammonia removal device, an ammonia recycling device and a controller.

The present invention provides a production process characterized in that a false twisting process is added between a spinning process and a winding process so that yarn slivers undergo excessive pre-torsion in an axial direction and twists which are same in quantity but different in twisting direction are generated on the yarn slivers. Absorption of glucose-containing sulfur dyestuff is performed in a dyeing process. An ammonia removal process is performed in a high-temperature and high-pressure tank so that residual ammonia in a fabric is evaporated. The evaporated ammonia is collected and then fed back to a mercerizing process for continuous use. The present invention also provides a production line including a spinning unit having a false twisting device, a dyeing unit configured to realize the dyeing process, and a liquid ammonia finishing unit consisting of a fabric mercerizing device, an ammonia removal device, an ammonia recycling device and a controller.

An system for anhydrous boiling, bleaching and dyeing using a supercritical carbon dioxide fluid and belongs to the field of textile. The system for anhydrous boiling, bleaching and dyeing of a supercritical carbon dioxide fluid provided by the present invention is provided with a co-solvent system, a boiling, bleaching and dyeing system, and a separation and recovery system which are specially designed. By means of uniform dispersion and dissolution of a co-solvent, dyestuff and carbon dioxide, boiling, bleaching and dyeing production of jute fiber rough yarn can be achieved; meanwhile, the system for anhydrous boiling, bleaching and dyeing using a supercritical carbon dioxide fluid integrates the three functions of boiling, bleaching and dyeing, which can complete the boiling, bleaching and dyeing procedures in one step, and has the characteristic of high-efficiency, thus solving the problems of high contamination and high energy consumption of the jute fiber boiling, bleaching and dyeing procedures.

An system for anhydrous boiling, bleaching and dyeing using a supercritical carbon dioxide fluid and belongs to the field of textile. The system for anhydrous boiling, bleaching and dyeing of a supercritical carbon dioxide fluid provided by the present invention is provided with a co-solvent system, a boiling, bleaching and dyeing system, and a separation and recovery system which are specially designed. By means of uniform dispersion and dissolution of a co-solvent, dyestuff and carbon dioxide, boiling, bleaching and dyeing production of jute fiber rough yarn can be achieved; meanwhile, the system for anhydrous boiling, bleaching and dyeing using a supercritical carbon dioxide fluid integrates the three functions of boiling, bleaching and dyeing, which can complete the boiling, bleaching and dyeing procedures in one step, and has the characteristic of high-efficiency, thus solving the problems of high contamination and high energy consumption of the jute fiber boiling, bleaching and dyeing procedures.