Device for recovering viscose fiber production exhaust-gas with soda washing-adsorption condensing method

Abstract

The invention relates to a device for recycling waste gas generated by viscose through an alkali cleaning-absorbing condensation method, which relates to the equipment for recycling waste gas generated by industries. The device for recycling waste gas generated by viscose through an alkali cleaning-absorbing condensation method has relatively good processing effects and can recycle useful resources in the waste gas with high efficiency. The device is equipped with a waste gas filter, an alkaline tower, a solution transfer pump, a storing tank of sodium hydrosulfide, an air compressor, a washer, a recycle pump, an adsorption tank, an air heater, a heater, a storing tank of carbon bisulfide, a gear transfer pump, a flowmeter, a solution separator, a magnetic levitation ball liquid level switch, a condenser, a water pump, a cooling tower, a draft fan, a vacuum pump, a concentration analyzer of H2S and CS2, an adsorption tank, a cooler and a pneumatic ball valve. Sulfureted hydrogen gas in the waste gas is transformed into sodium hydrosulfide liquid and carbon bisulfide gas in the waste gas is transformed into carbon bisulfide liquid through washing, absorbing, condensing and separating. The carbon bisulfide liquid is employed as raw materials and is directly sent back to the production of the viscose.

Description

technical field [0001] The invention relates to an industrial production waste gas recovery device, in particular to a device for recovering viscose fiber production waste gas by means of alkali washing and adsorption condensation. Background technique [0002] Viscose fiber is a regenerated cellulose fiber made from natural polymer cellulose by adding caustic soda, sulfuric acid, carbon disulfide, zinc sulfate and other chemical raw materials through a series of chemical and physical changes. During the production process, a certain amount of CS will be produced 2 and H 2 S and other harmful gases, causing environmental pollution. How to reduce this pollution is one of the main issues of domestic viscose fiber enterprises. The existing treatment method mainly adopts incineration method, that is, CS 2 and H 2 S waste gas is placed in an incinerator to be incinerated and oxidized to SO 2 , the mixed gas after combustion contains 5% to 6% SO 2 and water (water by H 2 S...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of waste gas with good treatment effect and high operating cost for the problems of direct discharge of waste gas in the existing viscose fiber production process, or poor waste gas treatment effect, difficult to meet the emission standards, complex waste gas treatment process, and high operating cost. Alkaline washing-adsorption condensation method that can efficiently recover useful resources from waste gas to recover waste gas from viscose fiber production

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