Blowing energy recovering method for blast furnace

A blast furnace blast and energy recovery technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as increased payback period of investment, and achieve the effects of shortened payback period, compact structure, and simple control system

Active Publication Date: 2005-05-11
XIAN SHAANGU POWER
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Problems solved by technology

If the above configuration model is still used, its payback period will increase

Method used

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  • Blowing energy recovering method for blast furnace
  • Blowing energy recovering method for blast furnace
  • Blowing energy recovering method for blast furnace

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Experimental program
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Embodiment Construction

[0013] According to the above technical solution, the applicant directly connects the blast furnace gas turbine in the blast furnace gas residual pressure generator set with the electric motor or steam turbine of the original blast furnace blower set through the clutch, and cancels the residual pressure power generation system in the blast furnace gas residual pressure generator set, forming Blast Furnace Blast Energy Recovery Unit (BPRT), this unit uses the pressure energy and thermal energy of blast furnace top gas, a by-product of blast furnace smelting, to do work through turbine expansion to recover the energy of blast furnace gas. The blast furnace gas turbine and the electric motor jointly drive the blast furnace blower. Therefore, the BPRT unit is a blast furnace blast and secondary energy recovery device. The BPRT unit blows the blast furnace and at the same time plays the role of energy saving and environmental protection, which can bring considerable economic and so...

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Abstract

The invention was involved in a method to recovery blast energy from air blast of blast furnace and rest pressure generators of gas of blast energy. Gas turbo of blast energy from rest pressure generators by clutch was connected with electric motor or steam turbine in air blast of blast furnace and rest pressure generating system in rest pressure generators of gas of blast energy was cancelled. All the above formed the recovery groups. The power was provided by electric motor or steam turbine in air blast of blast furnace and gas turbo of blast energy from rest pressure generators. The structure was compact with small floor space and convenient to layout. Mechanical loss was low and control system was simple with low investment cost. The cost was lower 10%-20% than that of a set of air blast with blast furnace and rest pressure generators of gas of blast energy. And the investment recovery period shorten 1-2 years.

Description

technical field [0001] The invention belongs to the professional field of power mechanical engineering, and particularly relates to blast furnace blasting and blast furnace gas energy recovery. Background technique [0002] Iron and steel complexes occupy a very important position in my country's national economy. At the same time, iron and steel complexes are also major energy consumers. The ironmaking system energy consumption of domestic iron and steel complexes generally accounts for 70% of the total energy consumption of the enterprise, of which 55% is consumed in the blast furnace smelting system. Therefore, the energy saving and consumption reduction of blast furnace is of great significance. [0003] Since the development of blast furnace blast and blast furnace gas residual pressure power generation, one blast furnace with one blower unit or one blast furnace with one blower unit and one blast furnace gas residual pressure power generation device has been adopted. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
Inventor 邱启家孙鸿声张三元张昌杰史小云柳黎光谭小平张保平
Owner XIAN SHAANGU POWER
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