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Blast furnace hot blast stove combustion control method

A control method and hot blast stove technology, applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as large vault temperature fluctuations, large waste gas temperature fluctuations, and gas waste, so as to reduce gas consumption, improve control accuracy, Operational safety effect

Pending Publication Date: 2022-04-08
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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  • Abstract
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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a combustion control method for blast furnace hot blast stoves to solve the problems of the existing hot blast stove gas waste, large fluctuations in exhaust gas temperature, large vault temperature fluctuations, etc., thereby reducing the ironmaking cost of blast furnaces

Method used

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Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples.

[0017] The operating conditions of the No. 3 blast furnace hot blast stove of the applicant Sichuan Desheng Group Vanadium and Titanium Co., Ltd. before the transformation are as follows:

[0018] 3#1250m 3 The blast furnace hot blast stove is equipped with 3 top-fired hot blast stoves. The heat storage mode is 19-hole checker bricks, and both air and gas have preheaters. The air supply system adopts the system of two firings and one delivery. The furnace firing time is about 80 minutes, the air supply time is about 50 minutes, and the furnace firing is semi-automatic. The daily average air supply temperature is 1200°C, the first and last air temperature is generally 1230°C-1200°C, the vault temperature is required not to exceed 1400°C, the normal fluct...

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Abstract

The invention discloses a blast furnace hot blast stove combustion control method which is characterized in that a hot blast stove combustion control system and an intelligent optimization control system are connected through an OPC communication technology, the hot blast stove combustion control system comprises operation equipment, a switch and a control cabinet, and the control cabinet is linked with hot blast stove data. The intelligent optimization control system comprises an optimization control station, an optimization switch and optimization operation equipment, and monitoring software, optimization software and voice alarm software are arranged in the intelligent optimization control system. The problems that an existing hot blast stove is large in waste gas temperature fluctuation, large in vault temperature fluctuation, serious in gas waste and the like are solved, and therefore the ironmaking cost of a blast furnace is reduced.

Description

technical field [0001] The invention relates to a combustion control method of a blast furnace hot blast stove, belonging to the technical field of blast furnace ironmaking production. Background technique [0002] Blast furnace is the key production process of the whole process iron and steel enterprises. It provides high-quality molten iron for iron and steel products. It is by far the most economical molten iron production process. Blast furnace hot blast stove is a device that provides combustion-supporting air at a certain temperature for blast furnace ironmaking. By storing heat in the checker bricks of the hot blast furnace, the heat storage of the checker bricks in the hot blast furnace is used to exchange heat for the combustion-supporting air supplied to the blast furnace. [0003] At present, the overall environment of the metallurgical industry is relatively severe, and enterprises use various channels to save energy and reduce consumption. In the blast furnace ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C21B9/00
Inventor 张国良胡国忠刘德安刘仕桃吴登友姜子文高丽姗
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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