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A method for controlling the overflow of converter smoke and dust

A control method and converter technology, which is applied in the manufacture of converters, sustainable manufacturing/processing, metal processing, etc., can solve the problems of uneconomical and environmental protection treatment methods, unsolved problems such as excessive dust in the working environment of converter workshops, and achieve pollution source control , Eliminate the abnormal increase in converter flue gas volume, and avoid the effect of environmental protection costs

Active Publication Date: 2022-04-01
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 the 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 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 flue gas from overflowin...

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 in particular relates to a method for controlling smoke and dust overflow of a converter. The invention discloses a method for controlling smoke and dust overflow of a converter, specifically comprising two links of converter smelting, converter smoke dust removal and recycling. The invention regards the operation of converter smelting and flue gas treatment facilities as a system to carry out environmental protection technology control, and at the same time improves the quality index of converter smelting lime and the control index of smelting process, and controls the amount of flue gas per unit time in the converter smelting process without a large increase; The flue gas capture effect at the converter mouth is poor, and two main control points, the feeding port and the top nozzle, have been added to the operation control of the flue gas treatment facilities, the water quality indicators of the converter turbid ring have been adjusted, and the control of dust removal fans and gas recovery facilities It has a certain economic and environmental value for the control of converter dust spillage using the 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 Patents(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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