Group control method for blast furnace gas cloth bag dust removal system for ash conveying of silo pump

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: 2011-09-28
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 for blast furnace gas cloth bag dust removal system for ash conveying of silo pump
  • Group control method for blast furnace gas cloth bag dust removal system for ash conveying of silo pump

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Embodiment Construction

[0028] The grouping control device used for the blast furnace gas bag dust removal system in the form of ash conveying by the warehouse pump provided by the present invention has the following structure: figure 1 Shown: It includes a large ash bin, a bag filter and a valve group. Among them: the pulse cleaning interface of each bag filter is connected with the pulse cleaning nitrogen pipeline through the pulse valve, each bag filter is equipped with a separate warehouse pump at the ash discharge end, and the discharge end of the storage pump is connected to the ash nitrogen gas pipeline through the discharge valve. The branch pipe is connected, and the pressurizing end of the warehouse pump is connected with the ash conveying nitrogen main pipe through the pulse pressure valve; one end of the pulse cleaning nitrogen pipe is connected with the large ash bin through the second valve group, and the other end is connected through the first valve group and the first nitrogen gas pip...

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Abstract

The invention relates to a group control method for a blast furnace gas cloth bag dust removal system for ash conveying of a silo pump, which adopts a group control device for the blast furnace gas cloth bag dust removal system for the ash conveying of the silo pump to realize multi-stage group control of the blast furnace gas cloth bag dust removal system. The device comprises a big ash bin, a cloth bag deduster and a valve bank. The method comprises the steps of: controlling pressure of pulse injected nitrogen of a cylinder body of the cloth bag deduster and the big ash bin grade by grade, setting an ash conveying nitrogen pressure, and realizing the group control management of the cylinder body of the cloth bag deduster by independently controlling each ash conveying pipeline. The method can improve operation efficiency and prolong the service life of equipment, realize the multi-stage group control of an ash removal air source pressure and the safety production of a blast furnace,and is suitable for the retrofitting of newly-built or present dust removal 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 ash conveying by a bin pump. 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 Patents(China)
IPC IPC(8): B01D46/04B01D46/02B01D46/46C21B7/22
Inventor 潘宏田国庆吴炳成崔国栋
Owner WISDRI ENG & RES INC LTD
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