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A treatment method for waste gas in the production process of viscose fiber

A production process, viscose fiber technology, applied in the treatment of waste gas, the field of waste gas treatment in the production process of viscose fiber, can solve the problem that waste gas cannot be decomposed into harmless gas, etc., to improve the working environment of workers, simple operation, security Effects on Workers' Health

Active Publication Date: 2018-02-27
YIBIN HIEST FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problem in the prior art that the waste gas produced in viscose fiber production cannot be decomposed into harmless gas, and provides a treatment method for waste gas in the production process of viscose fiber, which can decompose the waste gas produced in the production of viscose fiber Carbon disulfide and hydrogen sulfide gas are decomposed into harmless gases and discharged up to standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A treatment method for waste gas in the viscose fiber production process, comprising the following method steps:

[0030] A. Primary alkali spray pretreatment

[0031] Alkali spray towers are connected in series to form a first-stage alkali spray tower. Carbon disulfide and hydrogen sulfide waste gas pass through the first-stage alkali spray tower, and after alkali spray and filler interception, collision and absorption, hydrogen sulfide, a small amount of carbon disulfide and dissolved Volatile organic compounds;

[0032] B. Reaction decomposition

[0033] The exhaust gas pretreated by the first-level spray tower in step A is first dewatered through the buffer tank, and then transported to the low-temperature plasma device through the pipeline to decompose the pollutants in the exhaust gas into small molecular fragments;

[0034] C. Catalytic oxidation

[0035] Transport the waste gas from step B through the low-temperature plasma device to the catalytic oxidation t...

Embodiment 2

[0044] On the basis of embodiment 1:

[0045] Preferably, the wind volume of the exhaust gas is 50,000 m 3 / h, the first-stage alkali spray tower is two alkali spray towers connected in series, and the second-stage alkali spray tower is two alkali spray towers connected in series.

[0046] Preferably, the rated gas volume of the low temperature plasma device is 50,000 m 3 / h, maximum power 50Kw, input voltage 380v.

Embodiment 3

[0048] On the basis of embodiment 1:

[0049] Preferably, the wind volume of the exhaust gas is 100,000 m 3 / h, the first-stage alkali spray tower is 6 alkali spray towers connected in series, and the second-stage alkali spray tower is 6 alkali spray towers connected in series.

[0050] Preferably, the rated gas volume of the low temperature plasma device is 100,000 m 3 / h, maximum power 80Kw, input voltage 380v.

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Abstract

The present invention relates to a viscose fiber production process exhaust gas treatment method, and belongs to the technical field of textile industry exhaust gas treatment. Viscose fiber production process exhaust gas is washed with a first-stage alkali spray tower, then enters a low-temperature plasma apparatus for treatment, then enters a catalytic oxidation treatment bed for exhaust gas catalytic oxidation treatment, and finally is introduced by a glass fiber reinforced plastic centrifugal fan into a second-stage alkali spray tower for absorption of residual small molecules in the exhaust gas. Through the above process, carbon disulfide and hydrogen sulfide exhaust gases can be decomposed into CO2, H2O, N2 and other harmless substances, and are discharged up to standards.

Description

technical field [0001] The invention relates to a method for treating waste gas, more specifically, the invention relates to a method for treating waste gas in the viscose fiber production process, which belongs to the technical field of waste gas treatment in the textile industry. Background technique [0002] At present, the waste gas produced in the viscose fiber production process is mainly CS 2 and H 2 S gas, these exhaust gases are extracted by the fiberglass centrifugal fan and then discharged after alkali spraying or other treatment, but the treatment effect is not ideal. [0003] On 2013.10.2, the State Intellectual Property Office disclosed an invention with the publication number CN103331083A and the name "a carbon disulfide recovery process in viscose fiber production". The invention provides a carbon disulfide recovery process in viscose fiber production. . It is characterized in that: after the carbon disulfide waste gas produced in viscose fiber production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86
CPCB01D53/14B01D53/32B01D53/44B01D53/48B01D53/50B01D53/52B01D53/78B01D53/8603B01D53/8612B01D53/8687B01D2251/104B01D2251/302B01D2257/304B01D2257/308B01D2257/708
Inventor 张仁友张玉剑黄盛国易启永陈轶刘永洋陈志梁郝军
Owner YIBIN HIEST FIBER
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