Dust removal system

Abstract

The invention discloses a dust removal system. The dust removal system comprises a cyclone dust remover and a bag type dust remover, wherein the bag type dust remover comprises a plurality of dust removing barrel bodies and the dust removing barrel bodies are distributed around the periphery of the cyclone dust remover. The system disclosed by the invention has the advantages of compact structure,convenience for conveying and transporting ash, small occupied area, capability of effectively preventing dust particles from being deposited to block pipelines, capability of effectively balancing pressure oscillation of a blast-furnace gas pipe network and capability of effectively reducing pipeline brushing, long service life, small operation noises, flexibility in hoisting and overhauling andsafety and reliability.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust removal system. Background technique [0002] At present, in the dry dedusting process of blast furnace gas in metallurgical enterprises, the blast furnace raw gas with high temperature and high dust content needs to be connected to the cyclone dust collector (gravity dust collector) through the overhead raw gas main pipe of the furnace top, and the cyclone dust collector (gravity dust collector) After the first step of dedusting, it is connected to the bag filter through the large tie rod compensator of the standpipe, the length of which is usually greater than 10m, and the horizontal connection pipe. The lower part enters, and the clean gas pipeline is connected from the middle and upper part (or upper part) of the cylinder, and the clean gas main pipe of the bag filter is directly connected to the blast furnace gas pipe network, and then passes through the pressure reducing valv...

AI Technical Summary

Problems solved by technology

[0003] The traditional blast furnace gas dry dedusting process has disadvantages such as short service life of the large tie rod compensator in the standpipe, dust particles easily deposited and blocked in the pipe from the large tie rod compensator in the standpipe to the horizontal pipe elbow, and in order to ensure the fluidization of dust particles, The gas flow rate in the pipeline from the outlet of the gravity dust collector to the inlet of the bag filter is too high (usually > 18m / s), and the air flow severely scours the inner wall of the pipeline, which greatly affects the service life of the dust removal system

[0004] In the traditional blast furnace gas dry dedusting process, because the cylinders of the bag filter are arranged in single or double rows, the load of each cylinder, that is, the gas dedusting volume is inconsistent, resulting in great differences in the service life of the bags in each cylinder. The dust removal efficiency is low, the dust removal effect is poor, and it is easy to cause pressure and flow fluctuations in the net gas pipeline at the outlet of the bag filter

The single-row or double-row arrangement of the bag filter cylinder can easily cause the hoisting distance of some cylinder equipment to be too long, making it difficult to replace and repair the equipment. In the event of a safety accident, it takes too long for rescuers to enter or evacuate the dangerous area, etc.

[0005] In the traditional blast furnace gas dry dedusting process, the ash conveying channel between the cyclone dust collector (gravity dust collector) and the bag filter is too long, the turning radius of the transport vehicle is large, the entire system occupies a large area, the layout is difficult, and the operation Disadvantages such as loud noise

The existing blast furnace gas dry dedusting process has many shortcomings above, which seriously affects the normal production of the enterprise and the personal safety of employees, and has become a serious obstacle to the development of metallurgical enterprises

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