Converter flue gas waste heat recovery system and method

A waste heat recovery system and converter flue gas technology, applied in the field of converter flue gas treatment, can solve problems such as ineffective dust removal

Pending Publication Date: 2021-07-06
WISDRI ENG & RES INC LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a converter flue gas waste heat recovery system and method to solve the problem that the...

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  • Converter flue gas waste heat recovery system and method

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Embodiment Construction

[0022] The converter flue gas waste heat recovery system and method proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0023] refer to figure 1 , figure 1 It is a structural schematic diagram of the converter flue gas waste heat recovery system in the embodiment of the present invention. The converter flue gas waste heat recovery system includes: vaporization cooling flue 110, waste heat boiler radiation section 120, waste heat boiler evaporation section 130, ceramic fiber filter 140, Waste heat boiler economizer section 150, three-way switch valve 160, gas rec...

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Abstract

The invention provides a converter flue gas waste heat recovery system and method. The converter flue gas waste heat recovery system comprises an evaporative cooling flue, a waste heat boiler radiation section, a waste heat boiler evaporation section, a ceramic fiber filter, a waste heat boiler economizer section, a three-way switching valve, a coal gas recovery system, a diffusion chimney and a converter; the inlet end of the evaporative cooling flue communicates with the converter, and the outlet end of the evaporative cooling flue communicates with the inlet end of the waste heat boiler radiation section; the outlet end of the waste heat boiler radiation section communicates with the inlet end of the waste heat boiler evaporation section, and the outlet end of the waste heat boiler evaporation section communicates with the inlet end of the ceramic fiber filter; and the outlet end of the ceramic fiber filter communicates with the inlet end of the waste heat boiler economizer section, the outlet end of the waste heat boiler economizer section communicates with the inlet end of the three-way switching valve, and the two outlet ends of the three-way switching valve are connected with the coal gas recovery system and the diffusion chimney respectively. Dust can be effectively removed while waste heat of converter flue gas is fully absorbed.

Description

technical field [0001] The invention relates to the technical field of converter flue gas treatment, in particular to a converter flue gas waste heat recovery system and method. Background technique [0002] Converter steelmaking is currently the most important steelmaking method, accounting for more than 85% of the domestic steelmaking process. The process is a complex high-temperature oxidation reaction dominated by carbon and oxygen reactions, which will generate a large amount of high-temperature dust-laden flue gas. [0003] The converter will produce a large amount of flue gas, the main components of the flue gas are CO (about 66%), CO2 (about 16%) and N2 (about 17%), and a small amount of O2 and Ar. Because converter flue gas contains a large amount of CO, converter flue gas is also called converter gas. The initial temperature of converter gas is about 1600°C, which contains a large amount of dust from steelmaking, and the dust content is about 80-150g / m3. The main ...

Claims

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Application Information

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IPC IPC(8): C21C5/40F27D17/00
CPCC21C5/40F27D17/004F27D17/008C21C2100/02C21C2100/06F27D2017/006Y02P10/25
Inventor 徐海伦乔军刘攀
Owner WISDRI ENG & RES INC LTD
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