Hot-blast stove system of blast furnace

A hot blast stove and blast furnace technology, applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as non-burning furnace schemes, increasing gas consumption with high calorific value, etc., to increase vault temperature, hot blast temperature, and vault temperature and the effect of hot air temperature

Pending Publication Date: 2017-10-03
MCC CAPITAL ENGINEERING & RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For enterprises, although higher hot air temperature can be obtained, the consumption of high-calorific gas with higher value is increased, which is not the best solution for firing furnaces

Method used

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  • Hot-blast stove system of blast furnace
  • Hot-blast stove system of blast furnace
  • Hot-blast stove system of blast furnace

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Embodiment Construction

[0078] In order to have a clearer understanding of the technical solutions, objectives and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0079] Such as Figure 1 ~ Figure 2 As shown, the present invention provides a hot blast stove system of a blast furnace, wherein the hot blast stove system of a blast furnace includes a plurality of hot blast stoves 1, a plurality of first heat exchange units 2, at least one second heat exchange unit 3, and a combustion-supporting device 4 , chimney 5, air main pipe 6, gas main pipe 7 and flue gas main pipe 8, a plurality of hot blast stoves 1 and a plurality of first heat exchange units 2 are provided in one-to-one correspondence, and each hot blast stove 1 passes through the corresponding first heat exchange unit 2 respectively It communicates with the flue gas main pipe 8, and each hot blast stove 1 communicates with the f...

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PUM

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Abstract

The invention provides a hot-blast stove system of a blast furnace. The hot-blast stove system comprises a plurality of hot-blast stoves, a plurality of first heat exchange units, at least one second heat exchange unit, a combustion-supporting device, a chimney, a main air pipe, a main coal gas pipe and a main flue gas pipe. The multiple hot-blast stoves and the multiple first heat exchange units are arranged in a one-to-one correspondence mode. All the hot-blast stoves communicate with the main flue gas pipe and one of the main coal gas pipe and the main air pipe through the corresponding first heat exchange units, and all the hot-blast stoves communicate with the main flue gas pipe and the other one of the main coal gas pipe and the main air pipe through the second heat exchange units. The main flue gas pipe communicates with the chimney. The main air pipe communicates with the combustion-supporting device. By means of the hot-blast stove system of the blast furnace, at least one of coal gas and combustion-supporting air can be preheated with waste flue gas of one single hot-blast stove, high-temperature waste flue gas heat which is generated by last-phase combustion can be effectively utilized so that the coal gas and/or the combustion-supporting air can reach 280-310 DEG C, and thus the arch crown temperature and hot-blast temperature of each hot-blast stove can be further raised.

Description

technical field [0001] The invention relates to the technical field of blast furnace hot blast stoves in the metallurgical industry, in particular to a blast furnace hot blast stove system. Background technique [0002] In the metallurgical industry, increasing the hot air temperature is an effective way to save energy and reduce consumption in blast furnace ironmaking. For every 100°C increase in air temperature, the ton iron-coke ratio can be reduced by about 20kg, the amount of coal injection can be increased by about 50kg, and the output can be increased by about 4%. Therefore, all major iron and steel enterprises regard how to increase the temperature of hot air as a very important technology to study. [0003] The most direct means to increase the temperature of the hot blast is to increase the vault temperature of the hot blast stove. Because the calorific value of blast furnace gas produced by blast furnace ironmaking is low, the hot blast stove using blast furnace ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/14
CPCC21B9/14
Inventor 冯燕波全强龚必侠陈秀娟
Owner MCC CAPITAL ENGINEERING & RESEARCH
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