Group control device for blast furnace gas bag dust removal system used for ash conveying by warehouse pump

Abstract

The grouping control device of the blast furnace gas bag dust removal system used for the warehouse pump to transport ash, including the large ash bin, bag filter and valve group; in each bag filter, the pulse cleaning interface is connected with the pulse cleaning nitrogen pipeline through the pulse valve , the ash unloading end is equipped with a separate warehouse pump, the discharge end of the warehouse pump is connected with the ash conveying nitrogen branch pipe through the discharge valve, and the pressurizing end of the warehouse pump is connected with the ash conveying nitrogen main pipe through the pulse pressure valve; pulse ash cleaning One end of the nitrogen pipeline communicates with the large ash bin through the second valve group, and the other end communicates with the nitrogen source through the first valve group and the first nitrogen tank; The main pipe is connected; one end of the ash nitrogen main pipe is connected with the nitrogen source through the third valve group and the second nitrogen tank, and the other end is respectively connected with each ash nitrogen branch pipe and the pressurized end of each warehouse pump; the valve groups are Pulse nitrogen regulator valve group. The device can improve the operating efficiency and the service life of the equipment, and is suitable for new construction or renovation of existing dust removal systems.

Description

technical field [0001] The invention relates to the technical field of dust removal, in particular to a grouping control device 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...

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

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