Device for quickly calculating supplementing amount of dye recycled from dyeing residual liquid and dye supplementing method

Abstract

The invention discloses a device for quickly calculating the supplementing amount of dye recycled from dyeing residual liquid and a dye supplementing method. The device comprises a filter, a cooler, acirculating pump and a spectrophotometer which are sequentially connected through a pipeline. The pipeline is in end-to-end connection with an auxiliary cylinder for storing dyeing residual liquid; and a weighing device for weighing the mass of the dyeing residual liquid is arranged at the bottom of the auxiliary cylinder. The method comprises the following steps: drawing a concentration-absorbance working curve of required basic dye under light rays with different wavelengths; arranging the device directly on a residual liquid auxiliary cylinder of a dyeing machine, detecting residual liquidin an on line manner, and detecting the absorbance of the light rays with multiple wavelengths; acquiring the concentration of the residual liquid corresponding to each wavelength absorbance according to the concentration-absorbance working curve of the basic dye; and then taking a concentration average value , calculating the amount of the dye needing to be added according to the concentration average value of the dyeing residual liquid and the concentration and total amount of the original dyeing liquid, then adding the dye for reuse. Therefore, dyeing color difference of the reuse liquid can be effectively reduced, and detection is more convenient.

Description

technical field [0001] The invention belongs to the technical field of dyeing residue reuse, in particular to a device and method for quickly calculating the supplementary amount of dye for reuse of dye residue. Background technique [0002] Since the dyeing rate of all dyes in textile printing and dyeing enterprises cannot reach 100%, the dyeing residual liquid needs to be treated before being discharged as wastewater, otherwise it will cause serious environmental pollution. However, the cost of sewage treatment is high, which increases the production cost. Therefore, many textile printing and dyeing enterprises reduce the discharge of dyeing residue, sewage discharge, and sewage treatment by adding dyes and auxiliaries to the dyeing residue for recycling. cost. [0003] However, how to accurately add dyes to the dyeing residue to make the color difference after dyeing meet the dyeing requirements has become a major issue, such as a kind of dyeing residue reuse and recover...

AI Technical Summary

Problems solved by technology

However, the cost of sewage treatment is high, which increases the production cost. Therefore, many textile printing and dyeing enterprises reduce the discharge of dyeing residue, sewage discharge, and sewage treatment by adding dyes and auxiliaries to the dyeing residue for recycling. cost

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