Method and system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal

A blast furnace gas and dry dust removal technology, which is applied in blast furnaces, dust collectors, blast furnace details, etc., can solve the problems of incapability of mutual backup, large construction investment and operating costs, inability to clean gas into the gas pipe network, etc. Construction and production and operation costs, reducing repeated construction investment costs, and saving the use of heat tracing steam

Active Publication Date: 2018-06-15
MCC CAPITAL ENGINEERING & RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But above-mentioned prior art has following deficiency: (1) the positions of these two systems are independent of each other, and space utilization rate is low, and floor area is big; Standby, high construction investment and operating costs; (...

Method used

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  • Method and system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal
  • Method and system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal
  • Method and system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal

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Embodiment approach 1

[0043] Such as Figure 1 to Figure 8 As shown, the present invention provides a coupling system for recovery of material tank pressure equalizing gas and blast furnace gas dry dedusting, which includes: furnace top pressure equalizing gas recovery device 7, the inlet at its upper end is connected with material tank 2, and the outlet at its upper end It is connected with the gas pipe network 22, and its lower end is provided with an ash unloading port, and its side wall is provided with an ash delivery port; the blast furnace gas dry dust removal device 11, its inlet is connected with the blast furnace 3 located below the material tank 2, and its outlet passes through The blast furnace gas residual pressure turbine power generation device 21 (i.e. TRT) is connected to the gas pipe network 22, and its lower end is provided with an ash discharge port. The ash discharge port of the blast furnace gas dry dust removal device 11 passes through the ash delivery pipe 19 (i.e. Ash Conve...

Embodiment approach 2

[0058] The present invention also provides a coupling method for the recovery of pressure-equalized gas from material tanks and dry dedusting of blast furnace gas. The structure, working principle and beneficial effects of the coupling system of tank equalized gas recovery and blast furnace gas dry dedusting are the same as those of Embodiment 1, and will not be repeated here. The method for coupling the pressure equalized gas recovery of the material tank and the dry dust removal of the blast furnace gas comprises the following steps:

[0059] Step a: Recover the raw gas in the material tank 2 to the furnace top pressure equalization gas recovery device 7 for filtration, and directly transport the filtered clean gas to the gas pipe network 22, and recover the gas discharged from the blast furnace 3 to the blast furnace gas dry filter in the dust removal device 11, and transport a part of the filtered clean gas to the gas pipe network 22 after being depressurized by the blast ...

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Abstract

The invention provides a system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal. The system comprises a furnace top pressure-equalizing coal gas recovery device and a blast-furnace gas dry dust removal device, wherein an inlet of the upper end of the furnace top pressure-equalizing coal gas recovery device is connected with a charging bucket; an outlet of the upper end of the furnace top pressure-equalizing coal gas recovery device is connected with a coal gas pipe network; a dust discharge hole is formed in the lower end of the furnacetop pressure-equalizing coal gas recovery device; a dust conveying port is formed in a side wall of the furnace top pressure-equalizing coal gas recovery device; an inlet of the blast-furnace gas drydust removal device is connected with a blast furnace; an outlet of the blast-furnace gas dry dust removal device is connected with the coal gas pipe network through TRT; a dust discharge hole is formed in the lower end of the blast-furnace gas dry dust removal device; the dust discharging hole of the blast-furnace gas dry dust removal device is connected with the dust conveying port through a dust conveying pipe; the outlet of the blast-furnace gas dry dust removal device is connected with the dust conveying pipe through a purified gas pipe for conveying dust. The invention also provides a method for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal, which adopts the system for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal. According to the system and the method for coupling charging bucket pressure-equalizing coal gas recovery and blast-furnace gas dry dust removal provided bythe invention, the furnace top pressure-equalizing coal gas recovery device and the blast-furnace gas dry dust removal device are coupled into a whole, so that resources are saved, and the cost is low.

Description

technical field [0001] The present invention relates to the technical field of blast furnace engineering, in particular to a coupling method and system of pressure equalized gas recovery from material tanks and dry dust removal of blast furnace gas, and more specifically to a method and system for recovery of pressure equalized gas from material tanks and dry bag dust removal for blast furnace gas purification Coupling method and system. Background technique [0002] In the current blast furnace construction project, the blast furnace top pressure equalization gas recovery system (namely the material tank pressure equalization gas recovery system) and the blast furnace gas purification dry bag dust removal system are two independent systems. The blast furnace top pressure equalization gas recovery system is an auxiliary system of the blast furnace system charging tank system, which is only used to filter the gas in the material tank, that is, to collect the pressure equaliza...

Claims

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Application Information

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IPC IPC(8): C21B7/22C21B5/06
CPCC21B5/06C21B7/002C21B7/22Y02P10/25
Inventor 陈琛陈开颜陈乐张传波
Owner MCC CAPITAL ENGINEERING & RESEARCH
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