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Yellowing system for viscose fiber production
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A viscose fiber and yellowing system technology is applied in the field of yellowing system to achieve the effect of shortening the discharge time, considerable benefits and good quality
Active Publication Date: 2014-08-27
CHENGDU GRACE FIBER +1
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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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Embodiment 1
[0029] A yellowing system in the production of viscose fibers, comprising a yellowing machine, a discharge valve, a discharge pipeline, and a pulverizer. The yellowing machine, the discharge pipeline, and the pulverizer are connected in sequence, and the yellowing machine and the discharge A discharge valve is arranged between the pipelines, and the feature is that: the discharge pipeline is connected with a liquid inlet pipe; after the yellowing reaction is completed, add dissolved alkali and primary dissolved water into the yellowing machine, and after the addition, open At the same time, add secondary dissolved water to the discharge pipe through the liquid inlet pipe. When the discharge reaches more than 90%, add flushing alkali to the yellowing machine. After flushing, close the discharge valve and stop the pulverizer.
Embodiment 2
[0031] A yellowing system in the production of viscose fibers, comprising a yellowing machine, a discharge valve, a discharge pipeline, and a pulverizer. The yellowing machine, the discharge pipeline, and the pulverizer are connected in sequence, and the yellowing machine and the discharge A discharge valve is arranged between the pipelines, and the feature is that: the discharge pipeline is connected with a liquid inlet pipe; after the yellowing reaction is completed, add dissolved alkali and primary dissolved water into the yellowing machine, and after the addition, open At the same time, add secondary dissolved water to the discharge pipe through the liquid inlet pipe. When the discharge reaches more than 90%, add flushing alkali to the yellowing machine. After flushing, close the discharge valve and stop the pulverizer.
[0032] The dissolved alkali is added successively in the primary dissolved alkali and the secondary dissolved alkali, and the primary dissolved water is a...
Embodiment 3
[0034] The implementation mode of this embodiment is basically the same as embodiment 2, on this basis:
[0035] After the primary dissolving alkali is added, the speed of the yellowing machine is increased to a high speed, and then the secondary dissolving alkali is added into the yellowing machine.
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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 ...
Claims
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Application Information
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