Yellowing system for viscose fiber production

Abstract

The invention provides a yellowing system for viscose fiber production. The yellowing system comprises a yellowing machine, a discharging valve, a discharging pipeline and a pulverizer, wherein the yellowing machine, the discharging pipeline and the pulverizer are sequentially connected to one another, and the discharging valve is arranged between the yellowing machine and the discharging pipeline. The yellowing system is characterized in that the discharging pipeline is connected to a liquid inlet pipe; after yellowing reaction ends, dissolved alkali and primary dissolved water are added to the yellowing machine, after addition ends, the discharging valve is opened, meanwhile, secondary dissolved water is added to the discharging pipeline through the liquid inlet pipe, when discharging reaches above 90%, flushing alkali is added to the yellowing machine, and after flushing ends, the discharging valve is closed, and the pulverizer is stopped. The yellowing system has the advantages that the production cycle of the yellowing machine is effectively shortened, the capacity of the yellowing machine is improved, the operational stability of equipment is improved, the operating current of the equipment is reduced, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of viscose fiber production, and in particular relates to a yellowing system in viscose fiber production. Background of the invention [0002] As the saying goes: "Seven points for glue production, three points for spinning." It can be seen that the quality of viscose has a great influence on the quality of fiber products, and the control of the yellowing process plays a decisive role in the quality of viscose. The length of the yellowing cycle time and the temperature control during the yellowing process are all key issues that determine the quality of viscose. [0003] The process steps of viscose yellowing in the prior art are: after the yellowing reaction is finished, add primary dissolving alkali, secondary dissolving alkali and dissolving water into the yellowing machine from above the yellowing machine in order for initial dissolution to obtain Viscose in the production of viscose staple fiber, then open the ...

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 degree of fatification is uneven, 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 methods of yellowing, the phenomenon of viscose clumping is obvious, and the diameter of clumping can reach more than 1 meter, which is not conducive to subsequent dissolution and grinding

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