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A gas carbonyl sulfide removal agent

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

Active Publication Date: 2021-06-08
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 removal agent, which includes an oxidizing agent and a stabilizer, wherein the stabilizing agent includes complex iron and iron inorganic salt, and the oxidizing agent includes hydrogen peroxide, sodium hypochlorite and potassium permanganate. When using the gas carbonyl sulfide removal agent disclosed in the present invention, it is added into the reactor by spraying or bubbling after TRT to remove carbonyl sulfide. The agent for removing carbonyl sulfide from gas disclosed by the invention can selectively oxidize carbonyl sulfide and hydrogen sulfide in gas without reacting with carbon monoxide, carbon dioxide and hydrogen in gas, and oxidize carbonyl sulfide and hydrogen sulfide into sulfur dioxide and sulfur trioxide , converted into sodium sulfate by absorption of alkaline solution sodium hydroxide, high carbonyl sulfide removal efficiency, can effectively adapt to changes in carbonyl sulfide and hydrogen sulfide content in gas, reduce chemical consumption and waste water discharge. After actual tests, the overall operating cost of the carbonyl sulfide removal system can be reduced by 70%, and the 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 Patents(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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