Converter primary flue gas dry dedusting and cinder pneumatic transmission system

Abstract

The invention relates to a converter primary flue gas dry dedusting and cinder pneumatic transmission system. The system comprises an evaporative cooling tower (1), a cinder discharge pipe (4), a bin pump (10), a pneumatic transmission pipe (17) and a cinder bin (18) which are sequentially connected, wherein a rapping device (2) and a charge level indicator (3) are arranged in the evaporative cooling tower (1); the pneumatic transmission pipe (17) is connected with a gas storage tank (14); the inlet of the gas storage tank (14) is connected with a first nitrogen gas pipe (13); the inlet of the first nitrogen gas pipe (13) is connected with a nitrogen gas main pipe; and the bin pump (10) is connected with the cinder bin (18) through the pneumatic transmission pipe (17). According to the invention, cinders can be transported by a common cinder transport truck, thereby greatly reducing the investment and saving the cost. Meanwhile, the invention reduces the equipment quantity and equipment maintenance amount, solves the problem that the height of the evaporative cooling tower is limited during dry dedusting reconstruction, is especially suitable for a project of reconstructing converter primary flue gas wet dedusting into dry dedusting, and has wide application prospects.

Description

Technical field [0001] The invention relates to the field of environmental protection equipment, and more specifically, to a pneumatic conveying system for dust removal and coarse ash of converter primary flue gas dry method. Background technique [0002] With the continuous strengthening of environmental protection awareness, the primary flue gas of newly built and renovated converters mostly adopts dry dust removal. The crude ash collected by the banana bend under the evaporative cooling tower is sent to the crude ash silo in the main plant of the converter through the built-in chain conveyor, pneumatic flapper valve and pneumatic double-layer flap valve under the action of gravity. The crude ash is directly discharged by the vacuum tanker Comprehensive utilization of foreign transportation. [0003] The main problems of the existing converter primary flue gas dry dust removal coarse ash conveying system: First, the built-in chain conveyor has a high failure rate and frequent as...

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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 Inside, it is often restricted by the layout conditions of the steelmaking process, and the ash transportation channel for the car to enter and exit should be considered, which takes up a lot of indoor space; the third is that the price of each vacuum suction tanker is about 1 million yuan, and the investment is relatively high.

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