Pneumatic transmission system for dry dedusting of thick ash in converter gas

Abstract

The invention relates to a pneumatic transmission system for dry dedusting of thick ash in converter gas, which comprises an efficient waste heat recovery exchanger (1), a horizontal chain-type conveyor (2), a main ash discharge pipe (3), a pneumatic tee distributor (5), a first ash discharge branch pipe (8), a second ash discharge branch pipe (13), a first fluidizing transporter (11), a second fluidizing transporter (16), a pneumatic carrier (24) and a course fluidizing transporter (25), wherein the first fluidizing transporter (11), the second fluidizing transporter (16) and the course fluidizing transporter (25) are connected through the pneumatic carrier (24). The pneumatic transmission system for dry dedusting of thick ash in converter gas adopts the efficient waste heat recovery exchanger and a method of indirect heat exchange, has no direct spraying, completely solves the problem of easy hardening in an evaporative cooler and also solves the problem of ash blocking in the built-in chain-type conveyor resulting from water drops. The use of the efficient waste heat recovery exchanger can recycle a lot of waste heat in raw gas, remove the dust, save energy and can protect environment.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to a coarse ash pneumatic conveying system for converter gas dry dedusting. Background technique [0002] With the increasing awareness of environmental protection, most newly built and rebuilt converters use dry dust removal. The existing coarse ash conveying technology for dry dust removal is: spray water in the evaporative cooler to reduce dust, and the collected coarse ash is sent to the main converter under the action of gravity through the built-in chain conveyor, pneumatic flapper valve and pneumatic double flap valve. The coarse ash bin in the factory building is transported by car for comprehensive utilization after humidification. [0003] The main problems of the existing coarse ash conveying technology for dry dust removal are as follows: first, the evaporative cooler is easy to harden, and water droplets will precipitate when the water spray control is...

AI Technical Summary

Problems solved by technology

[0003] The main problems of the existing coarse ash conveying technology for dry dust removal are as follows: first, the evaporative cooler is easy to harden, and water droplets will precipitate when the water spray control is not good, which will cause the built-in chain conveyor to get stuck and affect the normal production of the converter; First, the storage and transportation of coarse ash are limited by the site and distance; third, the humidification of coarse ash is not uniform, resulting in dust everywhere during ash unloading, polluting the environment

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