A converter gas dry dust removal fine ash pneumatic conveying system

Abstract

The invention relates to a pneumatic conveying system for removing dust and fine ash in a dry process of converter gas. The system comprises a dry filter bag dust removing device (1), an ash discharging pipe (5), a cabin pump (10), a pneumatic conveying pipe (16) and a fine ash cabin (17) which are sequentially connected; the pneumatic conveying pipe (16) is connected with a gas storage tank (13), the inlet of the gas storage tank (13) is connected with a first nitrogen pipe (12), and the inlet of the first nitrogen pipe (12) is connected with a nitrogen main pipe; and the cabin pump (10) and the fine ash cabin (17) are connected through the pneumatic conveying pipe (16). By adopting the dry filter bag dust removing device, no sparks and discharging exist, and the problem that an electrostatic dust removing device is easily subjected to venting explosion is thoroughly solved. According to the pneumatic conveying system, the process of conveying fine ash is eliminated, and the fault rate of equipment is greatly reduced. The ash storage and the ash transportation of the fine ash cabin are not limited by a place and a distance.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, and more specifically relates to a pneumatic conveying system for converter gas dry dedusting fine ash. Background technique [0002] With the increasing awareness of environmental protection, most newly built and rebuilt converters use dry dust removal. The existing fine ash conveying technology for dry dust removal is: the fine ash collected by the electrostatic precipitator passes through the built-in chain conveyor, pneumatic flapper valve, pneumatic double flap valve, external chain conveyor, screw conveyor, bucket conveyor, etc. The hoist is sent to the fine ash warehouse outside the main workshop, and the fine ash is directly transported out by vacuum suction tanker for comprehensive utilization. [0003] The main problems of the existing fine ash conveying technology for dry dust removal are as follows: first, the electrostatic precipitator is prone to explosion, and the...

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Problems solved by technology

[0003] The main problems of the existing fine ash conveying technology for dry dust removal are as follows: first, the electrostatic precipitator is prone to explosion, and the equipment is easy to be damaged, which seriously affects the normal production of the converter; Affect the normal production of the converter; third, the storage and transportation of fine ash are limited by the site and distance; fourth, the price of each vacuum suction tank truck used for ash transportation is about 1 million yuan, and the investment cost is relatively high

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