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A kind of decarburization method of coke oven gas and converter and/or blast furnace gas

A technology of coke oven gas and blast furnace gas, which is applied in the removal of gas pollutants, combustible gas purification/transformation, gas dust removal, etc., and can solve the problems of no separation and recovery

Active Publication Date: 2020-08-04
戴乐亭 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, there is no specific process technology for the separation and recovery of carbon dioxide gas in coke oven gas, converter gas and blast furnace gas in my country at the same time.

Method used

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  • A kind of decarburization method of coke oven gas and converter and/or blast furnace gas
  • A kind of decarburization method of coke oven gas and converter and/or blast furnace gas
  • A kind of decarburization method of coke oven gas and converter and/or blast furnace gas

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Embodiment 1

[0210] A method for decarbonizing coke oven gas and converter and / or blast furnace gas, comprising the steps of:

[0211] S0), primary purification of coke oven gas and converter and / or blast furnace gas

[0212] The flow rate of coke oven gas before primary purification is 83052Nm 3 / h, the pressure is 0.005Mpa, and the temperature is 20°C; among the active ingredients, the volume fraction of methane is 20.8%, the volume fraction of hydrogen is 60.31%, the volume fraction of carbon monoxide is 8.9%, and the volume fraction of oxygen is 0.82% %, the volume fraction of carbon dioxide is 2.58%, and the content of tar and dust is 0.015g / Nm 3 , the content of hydrogen sulfide is 50mg / Nm 3 , the content of other sulfides is 155.2mg / Nm 3 ; The flow rate of converter and / or blast furnace gas before initial purification is 29000Nm 3 / h, the pressure is 0.005Mpa, and the temperature is 20°C; among the active ingredients, the volume fraction of carbon monoxide is 48%, the volume fract...

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Abstract

A decarbonization method of a coke oven gas and a converter and / or blast furnace gas comprises the following steps: (S1) filtering and performing impurity removal of the coke oven gas and the converter and / or blast furnace gas, and pressurizing of an MDEA (Methyldiethanolamine) barren solution; (S2) CO2 separation; (S3) purification of the coke oven gas and the converter and / or blast furnace gas;(S4) cyclic regeneration of the MDEA barren solution. The decarbonization method of the coke oven gas and the converter and / or blast furnace gas, disclosed by the invention, has the advantages of fastadsorption rate, large absorption ability, high purification degree and the like and can be used for not only removing CO2, but also removing sulfide, so that the a wide application and development prospect is obtained; meanwhile, decarbonization of the converter and / or blast furnace gas can be creatively completed through two working procedures of pressure swing adsorption coarse decarbonizationand MDEA solution fine decarbonization, the breakthrough of decarbonization of the converter and / or blast furnace gas is realized, and important significance in promoting the technological advance and economic development of refining industry in China is obtained.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a method for decarbonizing coke oven gas and converter and / or blast furnace gas. Background technique [0002] Energy and environmental issues are becoming the focus of global and regional attention. The iron and steel industry is a traditional industry with high logistics, high energy consumption, and high pollution, and it is an industry that focuses on energy conservation and emission reduction. From the perspective of industries that produce carbon dioxide, about 50% of carbon dioxide emissions come from industrial production, and the domestic iron and steel industry's carbon dioxide emissions account for about 14% of the country's total. The ironmaking process is the main source of carbon dioxide emissions in the iron and steel industry, accounting for about Carbon dioxide emissions account for more than 90% of carbon dioxide emissions, and carbon dioxide emissions from my cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10K1/00C10K1/02C10K1/14C10K1/32C10K1/34
CPCC10K1/003C10K1/004C10K1/005C10K1/024C10K1/143C10K1/32C10K1/34
Inventor 杨勇戴乐亭汪武平侯俊平
Owner 戴乐亭
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