Converter smoke dust overflow control method

A control method and converter technology, applied in the direction of manufacturing converters, sustainable manufacturing/processing, climate sustainability, etc., can solve the unsolved problems of excessive dust in the working environment of converter workshops, uneconomical and environmental protection methods, etc., to achieve pollution Source control, elimination of abnormal increase in converter flue gas volume, and avoidance of abnormal increase

Active Publication Date: 2021-02-09
SHOUGANG CHANGZHI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is a terminal control measure far away from the dust production point, which does not solve the problem of excessive dust in the working environment of the converter plant, and it is a very uneconomical environmental protection method to collect and dispose of the smoke and dust after it spreads to the roof of the plant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for controlling the overflow of converter smoke and dust described in this embodiment, the specific steps are as follows:

[0043] The first step, converter smelting

[0044] (1) After the primary dust removal and gas recovery equipment of the converter is started and adjusted normally, the operation of the converter smelting link is started;

[0045] (2) The tap hole of the converter after the steel has been tapped is blocked with a slag stopper to prevent the flue gas from overflowing from the tap hole during the smelting process;

[0046] (3) Put scrap steel and molten iron that meet the smelting requirements into the converter, shake the converter, and then lower the movable hood of the converter to a place less than 150mm from the furnace mouth;

[0047] (4) Open the nitrogen valve of the nitrogen sealing ring of the oxygen muzzle of the converter, and keep the nitrogen sealing pressure of the lower muzzle ≥ 0.3MPa, so as to avoid the overflow of flue gas...

Embodiment 2

[0070] A method for controlling the overflow of converter smoke and dust described in this embodiment, the specific steps are as follows:

[0071] The first step, converter smelting

[0072] (1) After the primary dust removal and gas recovery equipment of the converter is started and adjusted normally, the operation of the converter smelting link is started;

[0073] (2) The tap hole of the converter after the steel has been tapped is blocked with a slag stopper to prevent the flue gas from overflowing from the tap hole during the smelting process;

[0074] (3) Put scrap steel and molten iron that meet the smelting requirements into the converter, shake the converter, and then lower the movable hood of the converter to a place less than 150mm from the furnace mouth;

[0075] (4) Open the nitrogen valve of the nitrogen sealing ring of the oxygen muzzle of the converter, and keep the nitrogen sealing pressure of the lower muzzle ≥ 0.3MPa, so as to avoid the overflow of flue gas...

Embodiment 3

[0098] A method for controlling the overflow of converter smoke and dust described in this embodiment, the specific steps are as follows:

[0099] The first step, converter smelting

[0100] (1) After the primary dust removal and gas recovery equipment of the converter is started and adjusted normally, the operation of the converter smelting link is started;

[0101] (2) The tap hole of the converter after the steel has been tapped is blocked with a slag stopper to prevent the flue gas from overflowing from the tap hole during the smelting process;

[0102] (3) Put scrap steel and molten iron that meet the smelting requirements into the converter, shake the converter, and then lower the movable hood of the converter to a place less than 150mm from the furnace mouth;

[0103] (4) Open the nitrogen valve of the nitrogen sealing ring of the oxygen muzzle of the converter, and keep the nitrogen sealing pressure of the lower muzzle ≥ 0.3MPa, so as to avoid the overflow of flue gas...

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Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a converter smoke dust overflow control method. The converter smoke dust overflow control method specifically comprises two links of converter smelting, converter smoke dust removal and recycling. According to the converter smoke dust overflow control method, converter smelting and smoke treatmentfacility operation are used as a system for environmental protection technology control, meanwhile, the quality index of converter smelting lime and the smelting process control index are perfected,and the smoke amount in unit time in the converter smelting process is controlled not to be greatly increased; and aiming at the poor converter mouth smoke capturing effect, two main control points ofa discharging opening and a top nozzle are additionally arranged on smoke treatment facility operation control, the converter turbid ring water quality index is adjusted, the control indexes of a dust removal fan and a coal gas recycling facility are clear, and certain economic and environmental protection value is achieved for converter smoke dust overflow control adopting a new OG method.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for controlling smoke and dust overflow of a converter. Background technique [0002] Fume spillage from the converter is an environmental protection difficulty in the steelmaking process of the iron and steel industry. When the smoke and dust generated in the converter smelting process is not effectively controlled, the smoke and dust will overflow into the converter plant or even to the roof of the plant. [0003] In order to eliminate the phenomenon of red smoke from the roof of the converter plant, the national, provincial and municipal environmental protection departments have requested in government documents at all levels to build an airtight cover on the roof of the converter plant with a matching dust collector. However, this is a terminal control measure far away from the dust production point, which does not solve the problem of ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/38C21C5/30
CPCC21C5/38C21C5/30C21C2100/02
Inventor 原志勇周剑波刘国伟江波燕建宏郭昌杰李宁苗国平郭兵秦莉萍
Owner SHOUGANG CHANGZHI IRON & STEEL
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