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Group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying

A technology of bag dust removal and blast furnace gas, applied in the direction of separation methods, dust collectors, chemical instruments and methods, etc., can solve problems such as insufficient protective interlock control, achieve the effect of improving operating efficiency and prolonging the service life of equipment

Inactive Publication Date: 2010-05-19
WISDRI ENG & RES INC LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under abnormal working conditions of the blast furnace, the PLC provided by the complete set of dust collector equipment is not enough for the protective interlock control to ensure the safe production of the blast furnace and its own safety

Method used

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  • Group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying
  • Group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0029] The multi-level grouping control method for the blast furnace gas bag dust removal system in the form of pipeline ash transportation provided by the present invention is to use a grouping control device for the blast furnace gas bag dust removal system for pipeline ash transportation to realize the blast furnace gas bag dust removal The multi-level grouping control of the system, the structure of the device is as follows figure 1 Shown: It includes a large ash bin, multiple sets of bag filters and valve groups. Among them: the dust removal interface of each bag filter is connected with the pulse cleaning nitrogen pipeline through the pulse valve, and the ash discharge end of each bag filter is respectively connected with the corresponding ash conveying nitrogen pipeline through the dust discharge valve; one end of the pulse cleaning nitrogen pipe...

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Abstract

The invention relates to a group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying, which adopts a group control device of the blast furnace gas cloth bag dust catcher system for pipeline dust conveying to realize the multi-stage group control of the blast furnace gas cloth bag dust catcher system. The device comprises a big dust cabin, a plurality of groups of cloth bag dust catchers and a valve bank. The method comprises the following steps of: controlling the sleeve bodies of the cloth bag dust catchers and the pulse blowing nitrogen pressure of the big dust cabin by grade, setting a dust conveying nitrogen pressure, and realizing group control management for the sleeve bodies of the cloth bag dust catchers by separately controlling each dust conveying pipeline. The group control method of the invention can improve the operation efficiency, prolong the service life of equipment, realize the multi-grade control of a dust clearing gas source pressure and safe production of a blast furnace, and is suitable for the improvement of newly-built or traditional de-dusting systems.

Description

technical field [0001] The invention relates to the technical field of dust removal, in particular to a grouping control method for a blast furnace gas bag dust removal system used for pipeline ash transportation. Background technique [0002] The raw gas from the top of the blast furnace is distributed to the bag dust removal system by the semi-clean gas main pipe after passing through the gravity cyclone dust collector. In the raw gas chamber of the dust collector, the dust with larger particles settles naturally due to gravity and enters the ash hopper; the dust with smaller particles rises with the gas, and when passing through the filter bag, the dust is blocked on the outer surface of the filter bag, and the gas is refined. Dust. With the continuous progress of the gas filtration process, the dust accumulation on the outer wall of the bag gradually increases, and the filtration resistance continues to increase. When the resistance increases (or time) to a certain val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/04B01D46/46C21B7/22
Inventor 潘宏田国庆吴炳成崔国栋
Owner WISDRI ENG & RES INC LTD
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