Converter and/or blast furnace gas decarbonizing method

A blast furnace gas and converter technology, applied in the field of decarbonization of converter and/or blast furnace gas, can solve the problem of separation and recovery of carbon dioxide gas, and achieve the effect of increasing the cost of decarbonization

Active Publication Date: 2018-12-11
戴乐亭 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there is no specific process technology for the separation and recovery of carbon dioxide

Method used

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  • Converter and/or blast furnace gas decarbonizing method
  • Converter and/or blast furnace gas decarbonizing method
  • Converter and/or blast furnace gas decarbonizing method

Examples

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Embodiment 1

[0142] A method for decarbonizing converter and / or blast furnace gas, comprising the steps of:

[0143] S0), primary purification of converter and / or blast furnace gas

[0144] The flow rate of converter and / or blast furnace gas before primary 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 fraction of carbon dioxide is 24.5%, the volume fraction of nitrogen is 24.37%, and the volume fraction of hydrogen is 2%, the volume fraction of oxygen is 1%; the content of phosphine is 200mg / kg, and the content of tar and dust is 0.015g / Nm 3 , the content of sulfide is 17.7mg / Nm 3 .

[0145] Primary purification of converter and / or blast furnace gas includes the following steps:

[0146] S01), dust removal and tar removal

[0147] Use an electric tar collector to dedust and detar the converter and / or blast furnace gas, so that the total amount of dust and tar in...

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Abstract

The invention discloses a converter and/or blast furnace gas decarbonizing method which comprises the following steps: coarsely decarbonizing: utilizing a pressure swing adsorption mode to coarsely decarbonize converter and/or blast furnace gas and remove hydrogen phosphide; making the carbon dioxide volume fraction of the pressure swing absorption converter and/or blast furnace gas as 5.8 to 6.2%and the hydrogen phosphide content as 1 to 5 PPM; finely decarbonizing: utilizing an MDEA solution to decarbonize the converter and/or blast furnace gas in the S1 and making the carbon dioxide volumefraction of the converter and/or blast furnace gas as 0.0015 to 0.0019%. According to the converter and/or blast furnace gas decarbonizing method disclosed by the invention, two steps of work procedures of pressure swing adsorption decarbonization and MDEA solution fine decarbonization are creatively utilized for finishing decarbonizing the converter and/or blast furnace gas, breakthrough in converter and/or blast furnace gas decarbonization is achieved, and very important significance in promoting technological advance of China steel industry and economic development are achieved.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a method for decarbonizing 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 country's steel indus...

Claims

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Application Information

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IPC IPC(8): B01D53/047B01D53/14B01D53/18C10K1/00C10K1/02C10K1/08
CPCB01D53/047B01D53/1475B01D53/1493B01D53/18B01D2252/20489C10K1/005C10K1/024C10K1/08
Inventor 杨勇戴乐亭汪武平侯俊平
Owner 戴乐亭
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