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Method for controlling converter gas recovery stopping

A converter gas and coal gas technology, which is applied in the field of automatic control of the gas recovery system, can solve the problems of low gas recovery per ton of steel, energy waste, and long gas recovery time, and achieve the effects of improving recovery time, reducing costs, and increasing the total amount of recovery

Inactive Publication Date: 2020-04-17
SHANDONG LAIGANG YONGFENG STEEL & IRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the converter stops blowing, the flue still contains a lot of recyclable carbon monoxide, which will be released when the blowing is stopped (the gas will stop recycling and turn to release when the oxygen blowing is over). As a result, this part of carbon monoxide has not been recycled, which is a waste of energy and affects the gas. The recovery time is long, resulting in low gas recovery per ton of steel

Method used

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Embodiment Construction

[0021] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] A method for controlling the termination of converter gas recovery, comprising the steps of:

[0023] Gas recovery is terminated when any of the following conditions for gas recovery termination are met;

[0024] The conditions for the termination of the gas recovery are:

[0025] The timing starts after the oxygen blowing of the converter is stopped, and when the timing meets the delay setting conditions, the gas recovery is terminated;

[0026] or

[0027] After the oxygen blowing of the converter is stopped, when the oxygen content in the gas during the gas recovery process reaches the oxygen content setting condition, the gas recovery is terminated. The gas in the gas recovery process refers to the gas...

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Abstract

The invention discloses a method for controlling converter gas recovery stopping. The method comprises the following steps that when any gas recovery stopping condition below is met, gas recovery stops, wherein the gas recovery stopping condition is as follows that timing is started when oxygen blowing of a converter stops, when timing duration meets the delay set condition, the gas recovery stops, or after oxygen blowing of the converter stops, when the oxygen content of gas in a gas recovery process reaches the oxygen content set condition, the gas recovery stops. The method aims to increasethe gas recovery amount, reduce the energy waste degree, and improve the resource utilization rate.

Description

technical field [0001] The invention relates to the field of automatic control of gas recovery systems, in particular to a method for controlling the termination of converter gas recovery. Background technique [0002] Gas recovery is an important process of steelmaking converter smelting by-product collection and dust removal and purification system. After recovery, converter gas is stored in the gas cabinet of the Ministry of Power and Energy in stages, and then transported to gas users to realize energy recycling. Due to the large amount of flue gas produced by converter smelting, its composition is complex, including carbon monoxide, carbon dioxide, oxygen, nitrogen and other gases, and the company's gas cabinet is equipped with an electrostatic precipitator to further purify the output gas. For safety, the gas recovery process There are multiple safety interlocking procedures, among which the interlocking procedure for the termination of gas recovery is to stop the oxyg...

Claims

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Application Information

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IPC IPC(8): C21C5/38
CPCC21C5/38C21C2100/04
Inventor 黄令斌杜瑞卿江庆滕
Owner SHANDONG LAIGANG YONGFENG STEEL & IRON
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