Efficient economical dust collecting method and dust collector for iron-smelting blast furnace

A high-efficiency, energy-saving, iron-making blast furnace technology, applied in blast furnace details, blast furnaces, dust collectors, etc., can solve the problem of insufficient recovery and utilization of blast furnace gas waste heat and pressure, poor high temperature resistance of bag filter, and low heat transfer efficiency of blast furnace dehumidification blast and other problems, to achieve the effects of reducing power, improving waste heat recovery and utilization efficiency, and high dehumidification efficiency

Inactive Publication Date: 2007-11-21
童裳慧
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AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a high-efficiency, energy-saving and dust-removing method and equipment for ironmaking blast furnaces to solve the problems of low heat transfer efficiency, huge equipment, large investment and high operating costs in the current blast furnace

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  • Efficient economical dust collecting method and dust collector for iron-smelting blast furnace
  • Efficient economical dust collecting method and dust collector for iron-smelting blast furnace
  • Efficient economical dust collecting method and dust collector for iron-smelting blast furnace

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Embodiment Construction

[0035] In Figures 1 and 2, the inlet humid air first enters the air filter 1, and then enters the pre-cooling end of the ultra-fast superconducting tube heat exchanger 2 as a pre-cooling device, and the pre-cooled humid air enters as a re-cooling device The super heat pipe cooler 3 is used for cooling, the water vapor in the humid air is condensed and separated out in the super heat pipe cooler 3, and the dehumidified air enters the preheating end of the super heat pipe heat exchanger 2, which increases the air temperature . Then it enters the blast furnace blower 8 after being muffled by the muffler 22. The blower 8 sends the air into the ultra-fast heat pipe waste heat recovery and dust removal integrated device 14. In the waste heat recovery type dust removal device 14, the air exchanges heat with the top gas of the blast furnace 13, thereby The air is preheated and the temperature is raised, and finally enters the hot blast stove 12 .

[0036] The top gas of the blast fur...

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Abstract

An efficient energy-saving dust-collecting method and its apparatus for iron-smelting blast furnace are disclosed. The procedure is carried out by pre-cooling wet air before entering them into air blower, re-cooling, lowering temperature below saturated temperature, coagulating while precipitating for water content in wet air, re-cooling, delivering into blast furnace by air blower, discharging smoke from blast furnace, heat-exchanging, recovering partial tailed heat, lowering temperature, bagged collecting dust, storing or generating. It's cheap and simple, has higher heat-transfer rate, long utilizing life, less apparatus, full combustion and recovery and better high-temperature resistance for bagged dust collector.

Description

technical field [0001] The invention relates to a high-efficiency energy-saving dust removal method and equipment for an iron-making blast furnace. Background technique [0002] my country's iron and steel industry ironmaking system (ironmaking, sintering and coking) energy consumption accounted for 67.2% of the total energy consumption of the iron and steel industry, of which the ironmaking process accounted for 46.4%. It can be seen that the blast furnace ironmaking process is the top priority for iron and steel enterprises to implement energy saving and consumption reduction. Driven by the rapid development of the national economy, China's iron and steel industry has entered a stage of rapid development, which has also driven the rapid development of blast furnace ironmaking. With the rapid growth of China's pig iron production, China's blast furnace ironmaking technology has also made some progress. Due to the rapid growth of pig iron production, the supply of iron ore...

Claims

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Application Information

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IPC IPC(8): C21B7/22C21B7/10C21B9/14
Inventor 童裳慧何家驹刘景明吴晓光
Owner 童裳慧
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