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Device for recovery of carbon disulfide in viscose fiber production

A carbon disulfide and viscose fiber technology, which is applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems that the absorption effect is not as good as solvent adsorption, flammability, and slow absorption speed, so as to avoid excessive gas separation, The effect of high degree of automation and high absorption rate

Inactive Publication Date: 2013-10-02
YIBIN HIEST FIBER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Carbon disulfide is a colorless liquid at room temperature, volatile, extremely flammable and irritating. The existence of carbon disulfide not only pollutes the environment, but also brings serious safety hazards to production. Therefore, carbon disulfide waste gas must be treated.
The device in this patent uses activated carbon adsorption to remove carbon disulfide, which is not suitable for solvent adsorption. The operating cost and investment cost of activated carbon adsorption are relatively high, and the mass and heat transfer between gas and solid is lower than that between gas and liquid. , the absorption rate is slow, and the absorption effect is not as good as solvent adsorption

Method used

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  • Device for recovery of carbon disulfide in viscose fiber production

Examples

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Effect test

Embodiment 1

[0039] A recovery device for carbon disulfide in viscose fiber production, comprising an alkali spray tower, an absorption tower, a heat exchanger, an analysis tower, a condenser and a gas-liquid separator, the alkali spray tower is connected to the absorption tower, and the absorption tower is connected to the The heat exchanger and heat exchanger are connected to the desorption tower, the desorption tower is connected to the condenser, and the condenser is connected to the gas-liquid separator; the carbon disulfide waste gas generated in the production of viscose fiber is sprayed with alkali in the alkali spray tower to remove hydrogen sulfide, and then enters the absorption tower, the absorbent in the absorption tower absorbs carbon disulfide in the exhaust gas, the saturated carbon disulfide rich liquid is cooled by a heat exchanger, and is pumped to the analysis tower to obtain carbon disulfide gas and lean liquid, the carbon disulfide gas is condensed by a condenser, and t...

Embodiment 2

[0041] A recovery device for carbon disulfide in viscose fiber production, comprising an alkali spray tower, an absorption tower, a heat exchanger, an analysis tower, a condenser and a gas-liquid separator, the alkali spray tower is connected to the absorption tower, and the absorption tower is connected to the The heat exchanger and heat exchanger are connected to the desorption tower, the desorption tower is connected to the condenser, and the condenser is connected to the gas-liquid separator; the carbon disulfide waste gas generated in the production of viscose fiber is sprayed with alkali in the alkali spray tower to remove hydrogen sulfide, and then enters the absorption tower, the absorbent in the absorption tower absorbs carbon disulfide in the exhaust gas, the saturated carbon disulfide rich liquid is cooled by a heat exchanger, and is pumped to the analysis tower to obtain carbon disulfide gas and lean liquid, the carbon disulfide gas is condensed by a condenser, and t...

Embodiment 3

[0046] This embodiment is basically the same as Embodiment 2, on this basis:

[0047] The absorbent is white oil.

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Abstract

The invention relates to the exhaust gas recovery field in the viscose fiber industry, and provides a device for recovery of carbon disulfide in viscose fiber production. The device is characterized in that: it comprises an alkali spray tower, an absorption tower, a heat exchanger, a desorption tower, a condenser and a gas-liquid separator. The spray tower is connected to the absorption tower, the absorption tower is in connection with the heat exchanger, the heat exchanger is connected to the desorption tower, the desorption tower is connected to the condenser, which is in connection with the gas-liquid separator. The device provided in the invention has the characteristics of simple structure, high absorption rate, low investment and operation cost, and suitability for industrialized application.

Description

technical field [0001] The invention relates to the field of waste gas recovery in the viscose fiber industry, in particular to a recovery device for carbon disulfide in viscose fiber production. Background technique [0002] The production of viscose fiber generally adopts alkaline yellowing glue making and acid coagulation forming process. Therefore, the waste gas generated in the production process of viscose fiber contains a large amount of H 2 S and CS 2 . CS in the exhaust 2 It mainly comes from the yellowing, coagulation forming and plasticizing stretching process of viscose fiber, and is produced by the by-product of the yellowing reaction of alkali cellulose. The main reaction formula is: [0003] Na 2 CS 3 +H 2 SO 4 →Na 2 S+CS 2 ↑+H 2 S↑ [0004] C 6 h 7 o 2 (OH) 3-X (OCSSH) X +H + →C 6 h 10 o 5 +XCS 2 ↑ [0005] Carbon disulfide is a colorless liquid at room temperature, volatile, extremely flammable and irritating. The existence of carbon di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18
Inventor 邓传东易家祥王兵夏崇胜赵红霞
Owner YIBIN HIEST FIBER
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