Converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system

Abstract

The invention relates to a converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system. The converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system comprises an evaporation cooling tower (1), an ash discharging pipe (4), a bin pump (10), a pneumatic conveying pipe (17) and a coarse ash bin (18) which are sequentially connected with one another, wherein the pneumatic conveying pipe (17) is connected with a gas storage tank (14), an inlet of the gas storage tank (14) is connected with a first nitrogen pipe (13), and an inlet of the first nitrogen pipe (13) is connected with a nitrogen main pipe; the bin pump (10) is connected with the coarse ash bin (18) through the pneumatic conveying pipe (17), and a first fluidization device is arranged at the bottom of the bin pump (10); and a second fluidization device is arranged in a lower conical hopper of the coarse ash bin (18). The converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system has the advantages that the number of equipment and the maintenance amount of equipment are reduced, and the problem that the height of the evaporation cooling tower is limited during dry dedusting transformation is solved. The converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system is particularly suitable for projects of dry dedusting instead of converter primary exhaust gas wet dedusting and has wide application prospect.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to a coarse ash pneumatic conveying system for primary flue gas dry dedusting of a converter. Background technique [0002] With the increasing awareness of environmental protection, the primary flue gas of newly built and rebuilt converters mostly adopts dry dust removal. The coarse ash collected by the banana bend under the evaporative cooling tower is sent to the coarse ash bin in the main converter building under the action of gravity through the built-in chain conveyor, pneumatic flap valve and pneumatic double flap valve, and then transported outside by car after humidification. [0003] The main problems of the existing converter primary flue gas dry dedusting coarse ash conveying system are as follows: first, the built-in chain conveyor has a high failure rate and often gets stuck, which seriously affects the normal production of the converter; second, the c...

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Problems solved by technology

[0003] The main problems of the existing converter primary flue gas dry dedusting coarse ash conveying system are as follows: first, the built-in chain conveyor has a high failure rate and often gets stuck, which seriously affects the normal production of the converter; second, the coarse ash bin is located in the main workshop of the converter In the interior, it is often restricted by the layout conditions of the steelmaking process, and the ash transportation channel for the car to enter and exit must be considered, which takes up a lot of indoor space; third, the coarse ash is not uniformly humidified, resulting in dust everywhere during ash unloading, polluting the environment

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