Gas pressure equalizing releasing device for pressure vessel multistage dust removing and using method of device

A technology of pressure vessel and pressure equalizing device, applied in blast furnace parts, furnace, blast furnace details, etc., can solve the problems of high emission pollution, easy blockage, and easy damage to bag filter

Pending Publication Date: 2017-11-07
BEIJING SHOUGANG INT ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a pressure vessel multi-stage dedusting gas equalization and release device and its use method, which solves the problem of high pollution of pressure vessel gas equalization and release in traditional ironmaking technology, fine dust removal device, bag filter, easy damage, clogging problem

Method used

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  • Gas pressure equalizing releasing device for pressure vessel multistage dust removing and using method of device
  • Gas pressure equalizing releasing device for pressure vessel multistage dust removing and using method of device
  • Gas pressure equalizing releasing device for pressure vessel multistage dust removing and using method of device

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Embodiment 1

[0019] A gas pressure equalization and release device for multi-stage dust removal of pressure vessels, including three parts: a pressure equalization device, a release device and a safety device; 5. The cyclone dust collector 4, the shut-off valve 1 and the pressure vessel 1 are connected in series, and a pressure equalization valve 7 is provided between the pressure equalizing air source 11 and the bag dust collector 6, and between the bag dust collector 6 and the cyclone dust collector 4 There is a cut-off valve 25 between them, and a cut-off valve 2 is set between the cyclone dust collector 4 and the pressure vessel 1; the release device consists of a pressure vessel 1, a release valve 3, a cyclone dust collector 4, a cut-off valve 25, and a bag filter 6. Shut-off valve 3 8, orifice plate 9 and gas discharge pipe 12 are connected in series, and a release valve 3 is provided between the pressure vessel 1 and the cyclone dust collector 4, and a discharge valve 3 is provided b...

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Abstract

The invention discloses a gas pressure equalizing releasing device for a pressure vessel and a using method of the device and belongs to the technical field of metallurgical engineering. The device comprises the pressure vessel, a releasing valve, a reducing joint, a bag-type dust remover, a pressure equalizing valve, a hole plate, a gas discharging pipeline and the like. A pressure equalizing gas source enters the pressure vessel through the bag-type dust remover to achieve pressure equalizing; an inlet of the reducing joint (4) has the small diameter of 300 mm-500 mm, and an outlet of the reducing joint has the large diameter of 500 mm-700 mm; and a releasing device is started to realize releasing, and then a safety device is started to achieve the safety function. The device has the advantages that the problem of accumulation of filtering impurities is solved, impact of an air flow on equipment is relieved, and pollution and emission to air are reduced.

Description

technical field [0001] The invention belongs to the technical field of ironmaking in metallurgical engineering, and in particular relates to a gas pressure equalizing and releasing device for multi-stage dust removal of a pressure vessel and an application method thereof. Background technique [0002] The technical characteristics of the blast furnace top weighing material tank pressure equalization and release are: medium working pressure: 0-0.25MPa. Cycle alternately between high pressure and normal pressure state, repeating itself. Change states up to 15 times per hour. The instantaneous processing air volume is large, reaching 10-15Nm 3 / s, the duration is short 15-20s, and the dust content of raw coal gas discharged into the atmosphere is about 20-30g / Nm 3 . [0003] The tundish tank of the ash unloading process in the blast furnace crude gas system also has a gas pressure equalization release process similar to the furnace top weighing tank, which also needs to rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/00
CPCC21B7/002
Inventor 王力耿云梅陈玉敏张建毛庆武姚轼董志宝李欣银光宇李俊青梅丛华侯健
Owner BEIJING SHOUGANG INT ENG TECH
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