Pneumatic cinder conveying system of convertor once dry-method dedusting evaporative cooling tower under full working condition

Abstract

The invention discloses a pneumatic cinder conveying system of a convertor once dry-method dedusting evaporative cooling tower under a full working condition. The system comprises an evaporative cooling tower (1), a cinder feeding conical hopper (4), a first pneumatic gate valve (7), a bin pump type transmitter feed pipe (12), a pneumatic double-gate valve (14), a bin pump type transmitter (16), a cinder conveying gas source and valve group (17) with a nitrogen gas source heating device, a discharge port booster (18), a pneumatic double-gate discharge valve (19), a sectional external booster (20), a cinder conveying pipeline (21) and a cinder bin (22) which are sequentially connected, wherein the cinder feeding conical hopper (4) is provided with a tracing heat preservation and fluidization device. The systemic is capable of transferring cinder by use of a common cinder conveying vehicle, thus greatly reducing the investment and saving the cost. The system is used for solving the problem that the reliability of a pneumatic cinder conveying system is influenced by unstable cinder working conditions of the convertor once dry-method dedusting evaporative cooling tower, the equipment quantity and the equipment maintenance load are reduced, the operation stability of the dry-method dedusting evaporative cooling tower is further improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, and more specifically relates to a coarse ash pneumatic conveying system for primary dry dedusting evaporative cooling tower of a converter under all working conditions. Background technique [0002] With the development of modern industry and the continuous strengthening of social environmental protection awareness, more and more converter primary flue gas treatment methods use a large number of dry dust removal processes. The coarse ash collected by the “banana bend” at the lower part of the evaporative cooling tower is transported to the coarse ash bin in the main workshop of the converter through the built-in buried scraper chain conveyor, pneumatic flap valve, and pneumatic double flap valve. Sinotrans. [0003] The existing primary dry dedusting evaporative cooling tower coarse ash conveying system of the converter mainly has the following problems: [0004] 1. The failur...

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Problems solved by technology

[0004] 1. The failure rate of the built-in buried scraper chain conveyor is relatively high (that is, the card is often issued), which seriously affects the normal and stable production of the converter;

[0005] 2. Restricted by the technological layout of the steelmaking workshop, it is difficult to install the coarse ash bin in the main workshop;

[0006] 3. The construction cost of the vacuum suction and ash tanker is relatively high, about 1 million yuan, and the operation and maintenance cost is also high, so it is not suitable for this method of ash transportation;

[0007] 4. Due to the unstable working condition of the coarse ash of the evaporative cooling tower (problems: the coarse ash is too wet, the evaporative cooling tower often has large pieces of coarse ash agglomerated into the coarse ash hopper, and the coarse ash hopper often accumulates A large amount of water, etc.), set up in the usual way and adopt the pneumatic ash conveying process for coarse ash conveying is unstable and unreliable

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