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Blast furnace gas recovery and utilization system

A technology of blast furnace gas and working medium, which is applied in the field of blast furnace gas recovery, can solve the problems of lowering the temperature and pressure of blast furnace gas, reducing the efficiency of blast furnace gas recovery, and reducing the efficiency of gas-steam combined power generation devices, so as to improve efficiency and improve recycling utilization , Improve the effect of recycling efficiency

Active Publication Date: 2018-02-27
ATLAS COPCO SHANGHAI PROCESS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of wet dedusting equipment, the temperature and pressure of the blast furnace gas will be reduced at the same time, which will also reduce the efficiency of the gas-steam combined power generation unit and reduce the recovery efficiency of the blast furnace gas

Method used

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  • Blast furnace gas recovery and utilization system

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Embodiment Construction

[0011] see figure 1 , The blast furnace gas recycling system of the present invention includes a dry bag type dedusting device 1 , an Organic Rankine Cycle (Organic Rankine Cycle) power generation device 2 , a multistage compressor device 3 and a gas-steam combined cycle power generation device 4 .

[0012] The organic Rankine cycle power generation device 2 includes an evaporator 21, an expansion turbine 22 and a generator 23, and the working medium inlet of the evaporator 21 is connected with the working medium outlet of the expansion turbine 22 through a pipeline, so The working medium outlet of the evaporator 21 is connected with the working medium inlet of the expansion turbine 22 through a pipeline, and the generator 23 is connected to the output end of the expansion turbine 22 .

[0013] The dry bag dust removal device 1, the evaporator 21, the multi-stage compressor device 3 and the gas-steam combined cycle power generation device 4 are connected in sequence through pi...

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Abstract

A blast furnace gas recycling system, comprising a dry-type bag-type dust collecting device (1), an organic Rankine cycle power generation device (2), a multistage compressor device (3) and a fuel gas-steam combined cycle power generation device (4). The organic Rankine cycle power generation device (2) comprises an evaporator (21), an expansion turbine (22) and an electric generator (23). A working medium inlet of the evaporator (21) is in communication with a working medium outlet of the expansion turbine (22) via a pipeline, a working medium outlet of the evaporator (21) is in communication with a working medium inlet of the expansion turbine machine (22) via a pipeline, and the electric generator (23) is connected to an output end of the expansion turbine (22). The dry-type bag-type dust collecting device (1), the evaporator (21), the multistage compressor device (3) and the fuel gas-steam combined cycle power generation device (4) are sequentially connected via pipelines. The blast furnace gas recycling system makes full use of the temperature and pressure of the blast furnace gas, and improves the recycling efficiency of the blast furnace gas.

Description

technical field [0001] The invention relates to the field of blast furnace gas recovery; in particular, the invention relates to a blast furnace gas recovery and utilization system. Background technique [0002] Blast furnace gas is a by-product produced in the process of blast furnace ironmaking, and its main components contain about 20-30% combustible components, with low calorific value and high dust content. Since blast furnace gas is the most discharged waste gas in metallurgical waste gas, in addition to direct combustion as self-use gas in metallurgical enterprises, many ways to recycle blast furnace gas have also been developed. [0003] Among these approaches, the Top Gas Pressure Recovery Turbine (TRT) is a relatively common method, which utilizes the pre-determined gas pressure energy and sensible heat of the blast furnace to introduce the gas into the expansion turbine to perform external work, and the turbine Connected with the generator, the blast furnace gas ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/06
CPCC21B5/06Y02P10/25
Inventor 斯蒂芬·铂森
Owner ATLAS COPCO SHANGHAI PROCESS EQUIP