Yellowing process of viscose production

Abstract

The invention provides a yellowing process of viscose production. The process comprises the following steps: (A) after yellowing reaction is ended, adding primary dissolution alkali and secondary dissolution alkali into a yellowing machine successively, and adding primary dissolution water while adding secondary dissolution alkali; (B) opening a discharging valve to enable cellulose sulfonate in the yellowing machine to flow to a grinding machine from a discharging pipeline, and adding secondary dissolution water into the discharging pipeline while opening the discharging valve; (C) when the discharging rate is more than 90%, adding flushing alkali into the yellowing machine, and fully discharging, namely ending a yellowing cycle. According to the process, the dissolution water is added while the dissolution alkali is added, so that the time for separately adding the dissolution water is saved and the purposes of shortening the production cycle of the yellowing machine, increasing the production capacity of the yellowing machine, improving the operating stability of equipment and reducing the current consumption of the equipment and the energy consumption are achieved.

Description

Technical field [0001] The invention is the field of adhesive fiber production, which involves a yellowing technology for the production of adhesive fiber. Invention background [0002] As the saying goes: "Seven -point glue, three -point spinning." It can be seen that the quality of adhesive glue has a great impact on the quality of fiber products, and the decisive effect on the quality of sticky glue is the control of the yellow chemical process.The length of the cycle of the yellowing, the control of temperature during the yellowization process is a key issue that determines the quality of adhesion. [0003] The steps of the existing technologies' sticky fiber yellow chemical technology are: After the yellowing reaction is over, the dissolved alkali, secondary dissolved alkali, and dissolved water are added from the top of the yellow chemical machine toThe adhesive glue production in the short fiber of the glue, and then open the ingredients of the material pump. When it is o...

AI Technical Summary

Problems solved by technology

[0005]1. The production cycle of the yellowing machine is long and the production capacity is low;

[0006]2. When the yellowing machine is discharging, the current of the discharge pump and the pulverizer is high, the energy consumption is high, and it is easy to trip, resulting in the extension of the yellowing cycle;

[0007]3. The viscose ball and dissolved alkaline water are mixed unevenly, which may easily cause the discharge pump to be stuck and the equipment to run unstable

This patent adopts the combination of dry and wet method yellowing, the phenomenon of viscose clumping is obvious, and the diameter of clumping can reach more than 1 meter, which is not conducive to the subsequent dissolution and grinding process