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Coal gas carbonyl sulfide removing agent

A carbonyl sulfide and chemical technology, applied in the removal of gas pollutants, combustible gas purification, combustible gas purification/reconstruction and other directions, can solve the problems of high operating costs, secondary pollution, unstable removal efficiency, etc. The effect of operating costs and reducing equipment investment costs

Active Publication Date: 2021-03-02
上海逐源机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high investment cost, high operating cost, unstable removal efficiency and secondary pollution in the current domestic gas carbonyl sulfide removal process, the present invention proposes a gas carbonyl sulfide removal agent and the oxidation of carbonyl sulfide by using the agent absorption process
This process can greatly reduce the investment cost and operating cost of the existing gas carbonyl sulfide removal process, which is 30% of the catalytic hydrolysis process, and at the same time eliminates the problem of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A gas carbonyl sulfide removal agent includes an oxidant and a stabilizer, wherein the oxidant includes hydrogen peroxide, sodium hypochlorite and potassium permanganate, and the stabilizer includes complex iron and iron inorganic salts.

[0020] At normal temperature, the mass fraction of hydrogen peroxide, sodium hypochlorite and potassium permanganate is respectively 5%, 8% and 3% composite oxidant, and stored in a 316L stainless steel storage tank for subsequent use; at normal temperature, Fe(EDTA ) and ferric nitrate mass fraction are respectively 3% and 0.5% stabilizers, and stored in 316L stainless steel storage tanks for subsequent use.

[0021] A three-stage bubbling device is installed after the blast furnace gas residual pressure turbine power generation unit TRT, and the above-mentioned gas carbonyl sulfide removal agent mixed according to the volume ratio of oxidant and stabilizer at 1:1 is sprayed into the gas to remove COS, etc. organic sulfur. After tes...

Embodiment 2

[0023] A gas carbonyl sulfide removal agent includes an oxidant and a stabilizer, wherein the oxidant includes hydrogen peroxide, sodium hypochlorite and potassium permanganate, and the stabilizer includes complex iron and iron inorganic salts.

[0024] At normal temperature, the mass fractions of hydrogen peroxide, sodium hypochlorite and potassium permanganate are respectively 15%, 4% and 0.5% composite oxidant, and stored in a 316L stainless steel tank for subsequent use; at normal temperature, ferric citrate, ferric citrate, Fe(EDTA) and iron sulfate mass fractions were 1.8%, 1.2% and 0.5% stabilizers and stored in 316L stainless steel storage tanks for future use.

[0025] After the blast furnace gas residual pressure turbine power generation unit TRT, a two-stage spraying device is installed, and the above-mentioned gas carbonyl sulfide removal agent mixed according to the volume ratio of oxidant and stabilizer is 1:1 is sprayed into the gas to remove COS and other organi...

Embodiment 3

[0027] A gas carbonyl sulfide removal agent includes an oxidant and a stabilizer, wherein the oxidant includes hydrogen peroxide, sodium hypochlorite and potassium permanganate, and the stabilizer includes complex iron and iron inorganic salts.

[0028] Under normal temperature, the massfraction that configures hydrogen peroxide, sodium hypochlorite and potassium permanganate is respectively 2%, 20% and 6% compound oxidant, and stores in the 316L stainless steel storage tank standby; Fe(TEA) and ferric nitrate, sulfurous acid Stabilizers with iron mass fractions of 1.6%, 0.6% and 0.6% were stored in 316L stainless steel storage tanks for future use.

[0029] After the blast furnace gas residual pressure turbine power generation unit TRT, a two-stage spraying device is installed, and the above-mentioned gas carbonyl sulfide removal agent mixed according to the volume ratio of oxidant and stabilizer is 1:1 is sprayed into the gas to remove COS and other organic substances in the ...

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PUM

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Abstract

The invention discloses a coal gas carbonyl sulfide removing agent, which comprises an oxidizing agent and a stabilizing agent, the stabilizing agent comprises complex iron and iron inorganic salt, and the oxidizing agent comprises hydrogen peroxide, sodium hypochlorite and potassium permanganate. When the coal gas carbonyl sulfide removing agent disclosed by the invention is used, the coal gas carbonyl sulfide removing agent is added into a reactor in a spraying or bubbling manner after TRT, so that carbonyl sulfide is removed. The coal gas carbonyl sulfide remoing agent disclosed by the invention can selectively oxidize carbonyl sulfide and hydrogen sulfide components in coal gas, does not react with carbon monoxide, carbon dioxide and hydrogen in the coal gas, oxidizes the carbonyl sulfide and the hydrogen sulfide into sulfur dioxide and sulfur trioxide, and converts the sulfur dioxide and the sulfur trioxide into sodium sulfate through absorption of an alkaline solution sodium hydroxide, so that the carbonyl sulfide removal efficiency is high; the product can effectively adapt to the content change of carbonyl sulfide and hydrogen sulfide in coal gas, and reduces the agent consumption and wastewater discharge. Through actual tests, the overall operation cost of the carbonyl sulfide removal system can be reduced by 70%, and later maintenance is simple.

Description

technical field [0001] The application relates to a gas treatment process, in particular to a gas carbonyl sulfide removal agent and a process for utilizing the agent to oxidize and absorb carbonyl sulfide. Background technique [0002] Carbonyl sulfide (COS) widely exists in important industrial gases related to coal chemical industry and petrochemical industry, such as coke oven gas, water gas, natural gas, liquefied petroleum gas and Claus tail gas, usually combined with other sulfur compounds such as H 2 S and so on exist at the same time. Sulfides can cause equipment corrosion and catalyst poisoning during production. In addition, COS emitted to the atmosphere without treatment can form SO 2 , to promote photochemical reactions and bring about serious environmental problems. Therefore, it is necessary to remove COS in industries such as coal chemical industry. [0003] COS is difficult to remove by conventional methods. The main removal technologies are organic amin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/00C10K1/12
CPCC10K1/004C10K1/122
Inventor 许传东
Owner 上海逐源机械科技有限公司
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