Environment-friendly high temperature low oxygen hot blast furnace

A high-temperature, low-oxygen, hot blast stove technology, applied in the field of hot blast stoves and hot blast stoves in the metallurgical industry, can solve the problems of high preheating temperature and low oxygen content of combustion air.

Active Publication Date: 2010-08-04
BEIJING SHOUGANG INT ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is characterized by high combustion air preheating temperature and low oxygen content. Under this working condition, it burns with fuel. The co

Method used

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  • Environment-friendly high temperature low oxygen hot blast furnace
  • Environment-friendly high temperature low oxygen hot blast furnace
  • Environment-friendly high temperature low oxygen hot blast furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] figure 1 and figure 2 Respectively the specific implementation of the present invention

[0046] Depend on figure 1 It can be seen that the environment-friendly high-temperature low-oxygen hot blast stove of the present invention comprises: hot blast stove 1, cut-off valve 2, regulating valve 3, gas pipeline 4 for hot blast stove, combustion-supporting air pipeline 5 for hot blast stove, gas pipeline 6 for combustion furnace, and Combustion fan 7, combustion air duct for combustion furnace 8, combustion furnace 9, combustion furnace high temperature flue 10, gas mixing furnace 11, gas mixing pipeline 12, low temperature flue 13, flue gas pressurizer 14, hot blast stove flue 15 , Low-temperature preheating system 16, gas main pipe 17 from pipe network, combustion air main pipe 18, combustion air fan 19 for hot blast stove.

[0047] The low calorific value gas from the gas pipeline network enters the low-temperature preheating system 16 through the gas main pipe 17 fr...

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Abstract

An environment-friendly high temperature low oxygen hot blast furnace belongs to the technical field of hot blast furnaces in the metallurgy industry. The invention comprises a hot blast furnace, shut-off valves, regulating valves, a gas flue for the hot blast furnace, a combustion air pipeline for the hot blast furnace, a gas flue for a combustion furnace, a combustion air fan for the combustion furnace, a combustion air pipeline for the combustion furnace, the combustion furnace, a high temperature flue for the combustion furnace, a gas mixing furnace, a gas mixing pipeline, a low temperature flue, a flue gas pressing machine, flues for the hot blast furnace, a low temperature preheating system, a gas main from a pipe network, a combustion air main and a combustion air fan for the hot blast furnace. The hot blast furnace has the following advantages: the hot blast furnace is suitable for different metallurgical technological processes, can be used in combination with various combustion air and gas low temperature preheating devices, fully recover the flue gas waste heat and further improve the heat efficiency, and realizes high blast temperature, high efficiency, environment friendliness and long life.

Description

technical field [0001] The invention belongs to the technical field of hot blast stoves in the metallurgical industry, and in particular provides an environment-friendly high-temperature and low-oxygen hot blast stove, which is suitable for hot blast stoves used in blast furnace ironmaking and smelting reduction ironmaking in the ironmaking process. It can also be used in other industrial technical fields that need to heat the gaseous medium to above 1000°C. Background technique [0002] It has been nearly 200 years of history to use hot blast stove to heat blast in blast furnace ironmaking. After heating, the blast temperature is only 149°C at first. With the continuous advancement of technology, the current maximum wind temperature has reached 1350 °C. The increase of air temperature can greatly reduce the coke ratio, save coke, increase the output of blast furnace, and make full use of blast furnace gas with low calorific value, improve thermal efficiency, reduce gas emi...

Claims

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Application Information

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IPC IPC(8): C21B9/14
Inventor 张福明李欣毛庆武梅丛华倪苹银光宇钱世崇
Owner BEIJING SHOUGANG INT ENG TECH
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