Method and apparatus for managing hydrogen sulfide tail gas

A hydrogen sulfide and tail gas technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of secondary pollution, high price, difficult implementation, etc., to prevent waste gas pollution, simple equipment, and easy operation. Effect

Inactive Publication Date: 2006-03-15
XINXIANG CHEM FIBER
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Problems solved by technology

However, due to the lack of catalyst sources, high price, and high operating costs, it is difficult to promote; the second is the combustion method, which has strict requirements on the concentration of each component in the exhaust gas, requiring the concentration of hydrogen sulfide and carbon disulfide to be above 5 g/m3 , the oxygen content should be lower than 6%, otherwise it will explode easily, the operation safety factor will be

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  • Method and apparatus for managing hydrogen sulfide tail gas

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Embodiment Construction

[0009] A method for treating hydrogen sulfide tail gas, (1) using a sodium hydroxide solution with a concentration of 30-42% as an absorbent, (2) introducing the hydrogen sulfide-containing tail gas into a container containing the absorbent (1) at a temperature of 50-80 Under the condition of ℃, carry out the reaction and absorption until the sodium hydroxide and hydrogen sulfide are converted into saturated sodium hydrosulfide solution, while the carbon disulfide gas continues to enter the condenser along the exhaust pipe, and condenses into liquid recovery under the condition of 17-30 ℃, ( 3) After the saturated sodium hydrosulfide solution is recovered, it is concentrated and crystallized into sodium hydrosulfide lamellar crystals for utilization.

[0010] A device for treating hydrogen sulfide tail gas, which includes two sets of equipment that can replace each other, each set of equipment is composed of a primary reaction vessel 3 and a secondary reaction vessel 7, and eac...

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Abstract

A process for treating the tail gas containing hydrogen sulfide includes such steps as introducing said tail gas to the solution of sodium hydroxide, reacting at 50-80 Deg C. until the sodium hydroxide and hydrogen sulfide become saturated solution of sodium thiohydride for recovering it, and condensing CS2 gas into liquid in condenser for recovering it. Its apparatus is composed of a stage-one reactor with tail gas inlet and outlet tubes, liquid draining valve and steam heating tube, a stage-two reactor with tail gas inlet and outlet tubes, liquid draining valve and water jetter, and a condenser between said two reactors.

Description

technical field [0001] The invention relates to the purification and treatment of industrial waste gas, in particular to a method and equipment for treating hydrogen sulfide tail gas. Background technique [0002] Viscose fiber produces a large amount of industrial waste gas containing carbon disulfide and hydrogen sulfide in the production process. Due to the low content of carbon disulfide and hydrogen sulfide, these waste gases are treated with high operating costs and poor effects by conventional treatment methods. At present, most of them are discharged at high altitudes, which is harmful to the environment produce some pollution. There are three existing methods for treating hydrogen sulfide tail gas. One is the catalyst desulfurization method, which is to contact the mixed exhaust gas with the catalyst liquid phase to make hydrogen sulfide into sulfur and eliminate it. However, due to the lack of catalyst sources, high price, and high operating costs, it is difficult...

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Application Information

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IPC IPC(8): B01D53/52
Inventor 宋德顺卜晨阳张平波许长兴陈立冬王光辉
Owner XINXIANG CHEM FIBER
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