Production method of high-purity carbon oxysulfide

A carbon oxysulfide and production method technology, applied in the direction of carbon oxysulfide, carbon sulfur compounds, etc., can solve the problems of industrial production difficulties, slow reaction speed of carbon monoxide and sulfur, low yield, etc., and achieve reasonable process steps, high purity, The effect of increasing yield

Inactive Publication Date: 2012-09-19
绿菱电子材料(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, the problem that the above-mentioned production method of carbon oxysulfide exists is that the reaction speed of carbon monoxide and sulfur is too slow, so output is low, and industrialized production is difficult, so can't meet the demand of current market

Method used

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  • Production method of high-purity carbon oxysulfide
  • Production method of high-purity carbon oxysulfide

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Experimental program
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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the high-purity carbon oxysulfide production method provided by the present embodiment includes the following steps carried out in order:

[0017] 1) Pass carbon monoxide gas with a purity of 99.9% into molten sulfur in a reactor at 380°C, the molar ratio of carbon monoxide to sulfur is 2:1, the flow rate of carbon monoxide is 8L / min, and the amount of catalyst is added to the sulfur at the same time Calcium chloride, carbon monoxide and sulfur react for 15S to generate carbon oxysulfide;

[0018] 2) Make the above-mentioned carbon oxysulfide flow into the buffer tank for buffering, then pass through the two-stage adsorption column successively to remove impurities and moisture such as particles, the adsorbent in the first-stage adsorption column is calcium chloride particles, and the second-stage adsorption column The adsorbent is 5A molecular sieve, which produces high-purity carbon oxysulfide, and then collects high-purity carbon oxysulfid...

Embodiment 2

[0022] Such as figure 1 As shown, the high-purity carbon oxysulfide production method provided by the present embodiment includes the following steps carried out in order:

[0023] 1) Pass carbon monoxide gas with a purity of 99.9% into molten sulfur in a reactor at 420°C, the molar ratio of carbon monoxide to sulfur is 2:1, the flow rate of carbon monoxide is 9L / min, and the amount of catalyst is added to the sulfur at the same time Calcium chloride, carbon monoxide and sulfur react 12S to generate carbon oxysulfide;

[0024] 2) Make the above-mentioned carbon oxysulfide flow into the buffer tank for buffering, then pass through the two-stage adsorption column successively to remove impurities and moisture such as particles, the adsorbent in the first-stage adsorption column is calcium chloride particles, and the second-stage adsorption column The adsorbent is 5A molecular sieve, which produces high-purity carbon oxysulfide, and then collects high-purity carbon oxysulfide in...

Embodiment 3

[0028] Such as figure 1 As shown, the high-purity carbon oxysulfide production method provided by the present embodiment includes the following steps carried out in order:

[0029] 1) Pass carbon monoxide gas with a purity of 99.9% into molten sulfur in a reactor at 450°C, the molar ratio of carbon monoxide to sulfur is 2:1, the flow rate of carbon monoxide is 10L / min, and the amount of catalyst is added to the sulfur at the same time Calcium chloride, carbon monoxide and sulfur react for 8S to generate carbon oxysulfide;

[0030] 2) Make the above-mentioned carbon oxysulfide flow into the buffer tank for buffering, then pass through the two-stage adsorption column successively to remove impurities and moisture such as particles, the adsorbent in the first-stage adsorption column is calcium chloride particles, and the second-stage adsorption column The adsorbent is 5A molecular sieve, which produces high-purity carbon oxysulfide, and then collects high-purity carbon oxysulfid...

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Abstract

The invention discloses a production method of high-purity carbon oxysulfide. The production method comprises the following steps of: introducing carbon oxide into molten sulfur in a reaction kettle; reacting the carbon oxide with the sulfur to generate carbon oxysulfide by taking calcium chloride as a catalyst; and getting the carbon oxysulfide through calcium chloride and molecular sieve two stage adsorption columns to remove impurities and moisture successively, thereby preparing the high-purity carbon oxysulfide. According to the production method of the high-purity carbon oxysulfide, excess carbon oxide gas and the sulfur are subjected to chemical reaction under the condition of taking the calcium chloride as the catalyst to generate the carbon oxysulfide, the impurities and moisture in the carbon oxysulfide are effectively removed by utilizing the calcium chloride and the molecular sieve as adsorbents in sequence; and thus, the high-purity carbon oxysulfide with purity of reaching up to 98 percent can be prepared. Since the catalyst is properly selected and the process steps are rationally arranged, the reaction speed can be greatly increased, the yield can be improved, and the purity of a product is high; and thus, industrial production can be realized to meet the current market requirements.

Description

technical field [0001] The invention belongs to the technical field of industrial gas preparation, in particular to a method for producing high-purity carbon oxysulfide. Background technique [0002] Carbon oxysulfide, also known as carbonyl sulfide, is an industrial gas widely used in the production of pesticides, pharmaceuticals and other chemical products. At present, domestic and foreign scholars have done more research on the use of carbon oxysulfide as a fumigant for grains. This fumigant has good permeability and has a good poisonous effect on many pests. Degradation, it can be decomposed into carbon disulfide and hydrogen sulfide in water, and generates carbon monoxide and sulfur during combustion, which has little pollution to the environment. Carbon dioxide sulfide plays an important role in the production of pesticides such as oatmeal, oatmeal and carbap. In addition, in recent years, high-purity carbon oxysulfide has begun to be used as an etchant for semicondu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/26C01B32/77
Inventor 王新鹏钟少勇汤萍邸士强方志文汤有伦
Owner 绿菱电子材料(天津)有限公司
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