Method for preparing carbon disulfide from industrial tail carbon monoxide as raw material

A technology of carbon monoxide and carbon disulfide, which is applied to the preparation of carbon disulfide, carbon sulfur compounds, carbonates/acid carbonates, etc., can solve the problems of low sulfur conversion rate, low conversion rate, and high temperature required for reaction, and achieve yield The effect of high efficiency, improved utilization rate, and improved effect

Inactive Publication Date: 2018-02-27
山西铁峰化工有限公司
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Problems solved by technology

[0005] In order to effectively solve the problems of low conversion rate of sulfur in the preparation of carbonyl sulfide, low conversion rate of disproportionation process of carbonyl sulfide, relatively low separation efficiency of carbonyl sulfide and carbon dioxide, and relatively high temperature required for the reaction, the present invention provides a A new method for preparing carbon disulfide from industrial tail gas carbon monoxide

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  • Method for preparing carbon disulfide from industrial tail carbon monoxide as raw material

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Embodiment 1

[0024] 1. A method for preparing carbon disulfide with industrial tail gas carbon monoxide as raw material, the method may further comprise the steps:

[0025] a. Sulfur is quantitatively added to the carbon oxysulfide reactor after melting, and a metal sulfide catalyst is added in the reactor, and the sulfur liquid volume should account for 1 / 3-2 / 3 of the reactor volume, and the best is 1 / 2 or so, and then pass the dehydrated and dried carbon monoxide into the reactor. The carbon monoxide raw material is obtained by purifying the tail gas of the nitrogen fertilizer plant; it is evenly mixed with sulfur steam, and then enters the tubular carbon oxysulfide reactor. Under normal circumstances, carbonyl sulfide is generated at 350-450°C; the amount of carbon monoxide introduced should be 4-6% in molar excess, so that carbon monoxide can be fully utilized. The catalyst is a simple and easy-to-obtain metal sulfide, such as 3%~4% NiS, 9.8%~10% K 2 S, 1.8% α-CoS, supported by Al 2...

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Abstract

The invention relates to a method for simply preparing carbon disulfide CS2 from an industrial tail carbon monoxide CO as a raw material. By adopting the method, the carbon monoxide in tail gases of anitrogenous fertilizer plant is efficiently utilized, carbonyl sulfide is efficiently synthesized at relatively low temperature, and the yield of carbon disulfide is also relatively high; secondly, unreacted carbon disulfide can be introduced into a disproportionated reaction tower after condensation separation, so that the utilization rate of raw materials is sufficiently increased; furthermore,as carbonyl sulfide, carbon disulfide and carbon dioxide are separated by means of pressurized distillation, the normal boiling point of carbon disulfide is 46.2 DEG C, the boiling points of carbonylsulfide and carbon dioxide are 50.3 DEG C and 78.5 DEG C respectively, the boiling points of factions are increased through pressurization, and the separation effect is improved.

Description

technical field [0001] The invention relates to a simple preparation of CS by using industrial tail gas-CO as raw material. 2 Methods. Background technique [0002] Carbon disulfide is a colorless, volatile, transparent liquid with a generally foul odor. Carbon disulfide is very easy to burn in the air and is a flammable, explosive and toxic substance. Carbon disulfide is an important chemical raw material, widely used in man-made fibers, cellophane, pesticides, carbon tetrachloride, rubber, metallurgical beneficiation, petroleum refining and military industry, etc. At present, it is mainly used as a solvent and as some Raw materials for the synthesis of fine chemical products. As a solvent, it is mainly used in the synthesis of viscose fiber and cellophane and in the production of insoluble sulfur, grease, wax, resin and rubber. As a chemical raw material, it is used to synthesize dimethyl sulfide, carbon tetrachloride, dimethyl sulfoxide, dimethyl sulfone, rubber vulca...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/72C01B32/60
Inventor 朱远斌郭才才
Owner 山西铁峰化工有限公司
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