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Method for co-production of pig iron and synthesis gas-based organic chemical products

A joint production and organic chemistry technology, applied in chemical instruments and methods, inorganic chemistry, hydrogen production, etc., can solve complex problems such as pure oxygen, and achieve the effect of reducing asset costs, operation and asset costs

Active Publication Date: 2017-12-01
THYSSENKRUPP IND SOLUTIONS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The supply of pure oxygen requires complex air separation units

Method used

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  • Method for co-production of pig iron and synthesis gas-based organic chemical products

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Embodiment Construction

[0032] During iron production, a blast furnace (not shown) is charged with iron ore and coke. The blast furnace is supplied with air. The nitrogen-containing blast furnace gas 1 leaving the blast furnace is compressed by a compressor 2 to a pressure between 2 and 8 bar. The blast furnace gas 1 is supplied with low-pressure steam 3 (preferably likewise having a pressure between 2 and 8 bar). In the conversion process 4, the carbon monoxide present in the blast furnace gas 1 is converted into hydrogen and carbon dioxide. Preferably, the conversion process 4 is a catalytic conversion stage.

[0033] In the working example, the stream 5 leaving the conversion process 4 is first supplied to a unit 6 in which carbon dioxide is separated from hydrogen and nitrogen. In the working example, device 6 is CO 2 Pressure swing adsorption equipment.

[0034] The stream 7 leaving the device 6 is supplied to a gas separation unit 8, which in the working example is arranged as H 2 Pressur...

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Abstract

The invention relates to a method for the combined production of pig iron and a synthesis gas (21)-based organic chemical product (23). For this purpose, air is supplied to a blast furnace. The nitrogen-containing furnace gas (1) leaving the blast furnace is subjected to conversion together with low pressure steam (3). During conversion (4), carbon monoxide is reacted to hydrogen and carbon dioxide. The hydrogen (10) is separated from the nitrogen (9) in a gas separation unit (8). The hydrogen (10) is supplied to a synthesis system (12).

Description

technical field [0001] The present invention relates to a process for the co-production of pig iron and syngas-based organic chemical products. Background technique [0002] In conventional methods for iron production, the resulting residual gas is combusted and thus utilized thermally (eg for power generation). The conversion of these gases to electricity is becoming less and less economically attractive due to the oversupply of renewable electricity. [0003] The invention is based on a method in which process gases from a steelworks are physically utilized. This involves first producing synthesis gas, which is then converted into organic chemical products in a synthesis plant. Such combined processes are complex systems in which by-products of one process form feedstock for another process. [0004] Organic chemical products include carbon-based compounds. The chemical product is based on the inclusion of H 2 and CO synthesis gas for production. Syngas is used, for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/12C01B3/50C01B3/52C01B3/56C01B3/04C21B5/00C21B7/00
CPCC01B3/12C01B3/50C01B3/501C01B3/52C01B3/56C21B7/002C21B2100/28C21B2100/282C21B2100/284C21B2100/60C21C5/38Y02E60/36
Inventor J·门泽尔H·蒂勒特O·冯莫施泰因
Owner THYSSENKRUPP IND SOLUTIONS AG