Yellowing temperature regulating system for viscose fiber production

Abstract

The invention provides a yellowing temperature regulating system for viscose fiber production. The system comprises a controller and two yellowing machines, wherein each yellowing machine is connectedwith an adjusting system, the adjusting system comprises a temperature adjusting bucket, a water delivery pump and a heat exchanger, the top of the temperature adjusting bucket is provided with a soft water inlet pipe and a steam inlet pipe, and the bottom of thetemperature adjusting bucket is connected with the water delivery pump through a first connecting pipe; the heat exchanger is provided with a hot water inlet, a hot water outlet, a chilled water inlet and a chilled water outlet; an outlet of the water delivery pump is connected with the hot water inlet through a second connecting pipe; and the hot water outlet is connected with the yellowing machine through a third connecting pipe. The top of the yellowing machine is further connected with the temperature adjusting bucket througha return pipe, the third connecting pipe is connected with the return pipe through a circulating pipe, the third connecting pipes of the two adjusting systems are connected through a first bypass pipe, and the return pipes of the two adjusting systems are connected through a second bypass pipe. According to the invention, one-to-one adjustment of the yellowing machine can be realized, and the initial yellowing temperature can be stabilized when the season changes and the environment temperature fluctuates.

Description

technical field [0001] The invention belongs to the technical field of viscose fiber production, and in particular relates to a yellowing temperature regulating system for viscose fiber production. Background technique [0002] Viscose fiber is referred to as viscose fiber, also known as viscose yarn. Viscose fiber is the main variety of man-made fiber. It has the advantages of good hygroscopicity, easy dyeing, not easy to generate static electricity, and good spinnability. In the field of clothing and other fields, in the production process of viscose fiber, yellowing is one of the important processes. The aged alkali cellulose is added to react with carbon disulfide to generate xanthic acid of cellulose that can be dissolved in dilute alkali solution. Esters, which are orange-yellow, can be well dissolved in dilute alkali solutions to form viscous colloidal solutions, which can be used for subsequent textile and post-processing processes. Yellowing equipment often needs a...

AI Technical Summary

Problems solved by technology

Yellowing equipment often needs a matching yellowing temperature control system. In order to save costs, two yellowing equipment often share a set of yellowing temperature control system, but because the yellowing process steps of the two yellowing equipment are not synchronized in the normal production process , so the temperature of the yellowing jacket between yellowing batches cannot be kept stable, which will cause deviations in yellowing time between yellowing batches, resulting in poor uniformity of viscose

In addition, the yellowing temperature adjustment system generally only has the function of heating and temperature adjustment, but in summer and other high temperature, the temperature cannot be adjusted in time, which may easily cause the initial temperature of yellowing to be too high, which will eventually affect the quality of viscose fiber

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