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Multi-purpose system for high-temperature preheating of hot blast furnace combustion-supporting air

A technology for combustion-supporting air and hot-blast stove, which is applied in hot-blast stove system, hot-blast stove combustion-supporting air high-temperature preheating system, hot-blast stove system renovation or hot-blast stove-system maintenance or renovation alone, and can solve problems such as insufficient capacity of hot-blast stove system , to solve the construction period mismatch, protect the environment, and improve thermal efficiency.

Active Publication Date: 2012-08-22
BEIJING SHOUGANG INT ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this process is applied to the blast furnace overhaul project or the hot blast stove system is overhauled or transformed separately, the preheating furnace can be temporarily used as a hot blast stove to provide hot air for the blast furnace, and solve the hot blast stove system capacity caused by the hot blast stove overhaul or transformation one by one. Insufficient problem, when the hot blast furnace system overhaul or transformation is completed, the preheating furnace is still used as a high-temperature preheating device for combustion-supporting air

Method used

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  • Multi-purpose system for high-temperature preheating of hot blast furnace combustion-supporting air
  • Multi-purpose system for high-temperature preheating of hot blast furnace combustion-supporting air

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Embodiment Construction

[0039] figure 1 It is a specific implementation of the present invention.

[0040] When the present invention is applied to a blast furnace major renovation project, before the blast furnace and hot blast stove transformation, the preheating furnace and corresponding pipelines shall be constructed first, including the No. 1 preheating furnace 16, the No. 2 preheating furnace 17, the hot air pipe 20, and the preheating Furnace gas pipe 21, preheating furnace air pipe 22, cold air pipe 23, fan 24, and corresponding shut-off valves and regulating valves are installed on each pipeline. In addition, the installation of the temporary hot air valve 6, the temporary hot air pipe 7, the temporary cold air valve 13, and the temporary cold air pipe 14 must be completed.

[0041] The installation and commissioning of the preheating furnace, the corresponding pipes, temporary pipes and temporary valves of the preheating furnace are completed, and the preheating furnace can be officially put in...

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Abstract

The invention relates to a multi-purpose system for high-temperature preheating of hot blast furnace combustion-supporting air, belonging to the technical field of a hot blast furnace in metallurgical industry. The system comprises a hot blast furnace, a shut-off valve, a regulating valve, a gas pipe for the hot blast furnace, an air pipe for the hot blast furnace, a hot blast pipe, a flue, a cold blast pipe, a temporary hot blast valve, a temporary hot blast pipe, a temporary cold blast valve, a temporary cold blast pipe, a preheating furnace, a mixed blast furnace, a gas pipe for the preheating furnace, an air pipe for the preheating furnace, a hot air pipe, a cold air pipe, a mixed blast pipe and a blower. The system can be used for overhauling and renovation projects of a blast furnace or an independent overhauling or renovation project of a hot blast furnace system or a construction project of a new blast furnace. The preheating furnace not only can provide high-temperature hot blast for the blast furnace but also can provide high-temperature preheated combustion-supporting air for the hot blast furnace, thereby ensuring that the influence of overhauling or renovation of the hot blast furnace on the blast furnace is minimized.

Description

Technical field [0001] The invention belongs to the technical field of hot blast stoves in the metallurgical industry, and in particular provides a multi-purpose hot blast stove combustion-supporting air high-temperature preheating system, which is suitable for blast furnace ironmaking and smelting reduction ironmaking in the ironmaking process. It is suitable for the hot blast stove system transformation during the blast furnace overhaul or the independent maintenance or transformation of the hot blast stove system. Background technique [0002] With the ever-increasing competition in the iron and steel industry and the ever-increasing environmental protection requirements for the ironmaking process, blast furnaces in the world and my country are accelerating their large-scale development. The main way to enlarge the blast furnace is to build a new blast furnace and rebuild it on site. The major rebuild of the blast furnace has a very large impact on the iron and steel enterpris...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B9/14
Inventor 李欣张福明毛庆武倪苹梅丛华姚轼钱世崇银光宇许云
Owner BEIJING SHOUGANG INT ENG TECH
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