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Fully dry converter gas purification and recovery system and purification and recovery method

A converter gas recovery method technology, applied in waste gas treatment, manufacturing converters, climate sustainability, etc., can solve the problems of fan impeller sticky dust, low waste heat recovery, high nitrogen consumption, etc., to reduce dust content, The effect of saving water and electricity resources and reducing the cost of steelmaking

Active Publication Date: 2022-07-12
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

The "OG" wet process has high water consumption, low waste heat recovery, and high system resistance; the semi-dry process has problems such as high nitrogen consumption and sticky fan impellers.

Method used

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  • Fully dry converter gas purification and recovery system and purification and recovery method

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Embodiment Construction

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0028] see figure 1 , and now the fully dry converter gas purification and recovery system provided by the present invention will be described. The all-dry converter gas purification and recovery system includes a dust-collecting gas-collecting hood, a gravity precipitator, a coal gas enricher, a waste heat boiler, a bag filter, a pressurizing unit and an analysis and detection unit; The exhaust port is connected to collect the gas discharged from the converter; the gravity dust collector is connected to the dust collecting hood through the cooling flue, which...

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Abstract

The invention provides a full-dry converter gas purification and recovery system and a purification and recovery method, belonging to the field of energy saving and emission reduction. unit and analysis and detection unit; the dust collecting hood is connected with the exhaust port of the converter; the gravity precipitator is connected with the dust collecting hood through the cooling flue; the gas enricher is connected with the gravity precipitator; the waste heat boiler is connected with the gas enrichment The bag filter is connected to the waste heat boiler; the pressurizing unit is used to pressurize the secondary purified gas and send it to the muffler for silencing; the analysis and detection unit is used to detect CO and O in the gas after the pressurization and silencer. 2 content; when CO and O in the gas 2 Recycle when the content meets the preset value. The invention can save a large amount of water resources and electric resources, and can recycle a large amount of converter gas that does not meet the current recovery standard, avoid the waste of emission and pollution to the atmosphere, and improve the calorific value of the converter gas.

Description

technical field [0001] The invention belongs to the technical field of energy saving and emission reduction, and in particular relates to a full-dry converter gas purification and recovery system and a purification and recovery method based on the full-dry converter gas purification and recovery system. Background technique [0002] With the aggravation of environmental problems and global energy problems, especially my country's huge demand for steel production, my country's metallurgical industry is facing unprecedented opportunities and challenges. Based on this, the study of converter gas purification and recovery process is a major problem to be solved by relevant steel mills, and it is also a technical guarantee for the realization of negative energy steelmaking. [0003] During the oxygen blowing smelting period, the converter produces high-temperature flue gas containing a large amount of CO and iron dust. If the flue gas is allowed to be released arbitrarily after ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/40
CPCC21C5/40C21C2100/02C21C2100/06Y02P20/129
Inventor 吴海霞庞雅静魏子群李嘉琪潘美华王佳琪魏志珊要依曼
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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