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Air dispensation control system for blower system of blast furnace in metallurgical enterprise

A blast furnace blast and control method technology, applied in the field of control, can solve problems such as insufficient safety factor and slag filling, and achieve the effect of system safety

Active Publication Date: 2014-04-09
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing blast furnace ventilation systems are 1 to 1, and the safety factor is not enough. Sometimes, due to the untimely action of the system equipment, there are still risks such as blast furnace slag filling

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  • Air dispensation control system for blower system of blast furnace in metallurgical enterprise
  • Air dispensation control system for blower system of blast furnace in metallurgical enterprise
  • Air dispensation control system for blower system of blast furnace in metallurgical enterprise

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0025] The blowing control method of the blast furnace blast system in the metallurgical enterprise provided by the invention specifically adopts the method comprising the following steps:

[0026] 1. Winding conditions:

[0027] Taking 3 blast furnaces, 3 cold air pipes, 4 fans (4# fan as backup) and 3 matching fan control systems as an example, whenever ventilation is required, it should be checked whether the fan control system meets the following three conditions , if yes, dial wind.

[0028] (1) The check valve of the faulty fan is closed 3 times;

[0029] (2) The pressure on the side of the fan regulating valve 9, that is, the side to be fanned, is less than 150Kpa;

[0030] (3) The pressure on the other side of the fan regulating valve 9, that is, the pressure on the fan side is greater than 250Kpa.

[0031] 2. Specific operation:

[0032] I...

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Abstract

The invention discloses an air dispensation control system for a blower system of a blast furnace in a metallurgical enterprise. Particularly, in the production process of a plurality of blast furnaces, if a fan of one of the blast furnaces goes wrong, a check valve at an outlet of the fan is closed and a signal is sent to the corresponding air dispensation control system; and then another air dispensation control system starts to judge and selects a cold air pipe with a high air pressure to carry out air dispensation on the blast furnace which goes wrong. Due to the adoption of the air dispensation control system, the control of mutual air dispensation when different systems operate can be realized. Moreover, the air dispensation control system has the advantages of effectively ensuring the safety production of the blast furnaces, reducing the slag entering accident rate of the blast furnaces and the like.

Description

technical field [0001] The invention relates to the field of control methods, in particular to a blowing control method for a blast furnace blast system in a metallurgical enterprise. Background technique [0002] In metallurgical enterprises, the blast furnace blower is a gas compression machine that supplies the cold air required for smelting to the blast furnace of the ironworks, and is called the "heart" of the blast furnace system. If the cold air supplied to the blast furnace is suddenly and unpredictably interrupted due to a sudden failure or misoperation of the air supply system, it will cause a serious accident of filling the tuyere with slag, and will also cause huge economic losses to the enterprise. And it will seriously damage the blast furnace itself. What's more, if the blast furnace gas blows back and explodes due to the shutdown of the fan, it will directly threaten the safety of people and equipment. Therefore, a stable and reliable ventilation system is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B9/12C21B5/00
Inventor 杨婷阮祥志赵航
Owner WISDRI ENG & RES INC LTD