31results about How to "Save water for dyeing" patented technology

The invention discloses an acid dye dyeing residue and heat energy recycling device and method. The acid dye dyeing residue and heat energy recycling device and method comprises a dye vat. The dye vat is connected with a vessel, wherein the volume of the vessel is greater than or equal to the dye vat. A heat exchanging coil pipe is arranged in the vessel, one end of the heat exchanging coil pipe is connected with a water inlet port, and the other end of the heat exchanging coil pipe is connected with the dye vat. Longitudinal sliding rails are arranged in the vessel, and sliding blocks are arranged on the sliding rails. A linear motor is arranged in the vessel, an output shaft of the linear motor is fixedly connected with the heat exchanging coil pipe. According to the acid dye dyeing residue and heat energy recycling device and method, by collecting the dyeing residue, the heat energy of the dyeing residue can be utilized for hot water washing, soaping and fixation process after dyeing, and moreover, by adding water, leveling agent, acid and dye into the dyeing residue until the dyeing residue returns back to the pre-dyeing status, so that recycling using of the dyeing residue is realized. According to the acid dye dyeing residue and heat energy recycling device and method, dosage of the leveling agent, the acid and the dye are decreased, dyeing cost is reduced, and dyeing processing efficiency are is improved.

The invention aims to provide a dyeing process of flame-retardant mixed fiber. The dyeing process includes following steps: adding the flame-retardant mixed fiber into a desizing water solution of 50-60 DEG C, holding the temperature, and washing with water at 50-70 DEG C; adding the flame-retardant mixed fiber that is desized into a rinsing water solution of 95-100 DEG C, holding the temperature, and washing with water at 50-70 DEG C; unhairing; adding the flame-retardant mixed fiber that is unhaired into water of 15-35 DEG C, rising the temperature to 100-102 DEG C, adding dye at 68-71 DEG C, adding a dye auxiliary at 95-100 DEG C, and holding the temperature at 100-102 DEG C; rising the temperature to 130-135 DEG C, and holding the temperature at 130-135 DEG C; lowering the temperature to 75-80 DEG C; taking out the flame-retardant mixed fiber, and soaping the flame-retardant mixed fiber at 75-80 DEG C; taking the flame-retardant mixed fiber dyed for the first time, padding the flame-retardant mixed fiber in dye liquid, and air-drying at high temperature; padding the flame-retardant mixed fiber in color fixing liquid, and performing saturated steaming at high temperature; subjecting the flame-retardant mixed fiber after saturated steaming to water washing at 10-15 DEG C, acetic acid neutralizing, soaping at 85-90 DEG C and water washing at 15-35 DEG C sequentially; taking the flame-retardant mixed fiber after being dyed, and subjecting the flame-retardant mixed fiber to air finishing and full decatizing sequentially. The dyeing process has the advantage that dyeing effect is improved.

The invention discloses a cellulosic fiber in-situ mineralization deep water-saving and emission reduction dyeing aftertreatment method which comprises the following steps: firstly, putting a fabric to be dyed into dyeing equipment, adding dyeing water into the dyeing equipment, and keeping circulation of a dye bath; performing dyeing processing on the fabric to be dyed by using a common deying method for the cellulosic fiber, and after dyeing is completed, retaining the residual dyeing liquid; further simultaneously performing in-situ mineralization treatment on the residual dyeing liquid obtained after cellulosic fiber dyeing processing and the dyed fabric by using cellulosic fiber aftertreatment additives XAC, XBC and XYC; storing the residual dyeing liquid obtained after the mineralization treatment as later dyeing water; dehydrating and drying the dyed fabric, thereby completing dyeing and aftertreatment on the fabric. The invention further discloses the cellulosic fiber dyeing aftertreatment additives XAC, XBC and XYC. By adopting the dyeing aftertreatment method disclosed by the invention, the water consumption problem and the wastewater discharge problem in the cellulosic fiber dyeing processing can be fundamentally solved.