Bag-type dust collector

Abstract

The invention provides a bag-type dust collector. The bag-type dust collector comprises a spray tower (1), a gas-liquid whirlcone (2) and a bag-type dust collection part (3) which are connected in sequence; moreover, water-repellent means after spraying is further provided, the spraying process is a smoke cooing process, water inside smoke can be centrifuged to a greater extent by using the gas-liquid whirlcone, and bag pasting in later bag filtration process is prevented. In the water draining process, condensate water folded back to the top and centrifugal water of the gas-liquid whirlcone are guided to the lower cone part of the whirlcone due to a flow guiding role of a rotating plate (21), in order to prevent the disturbance of an air flow on water, a cross plate is used, and when water flows into the area of the cross plate, a smoke air flow cannot disturb water, and water is carried with large particles to be discharged downwards.

Description

technical field [0001] The invention relates to a bag dust collector, in particular to a bag dust collector with spraying, dehumidification and high-efficiency dust removal devices, and especially has better dust removal effect on ultrafine particles. Background technique [0002] With the rapid development of the world economy, people are also facing severe environmental problems while enjoying the benefits brought by economic and technological development. In particular, North China and Central China have been plagued by severe air pollution in recent years, among which coal-fired fly ash particles are one of the main sources of air pollutants in my country, and the pollutants produced by coal-fired power plants and industrial boilers are coal-fired fly ash Major source of particulate and sulfurous gases. [0003] CN106823651A discloses a high-efficiency composite dust collector. The composite dust collector includes a spray dust removal device and an electric bag composit...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the use of the spray device, the used flue gas contains a large amount of water vapor, and the heating in the front electrostatic heating area further increases the saturation value of the water in the flue gas, and the water vapor will go to the next step of the bag dust removal operation , when collecting dusty gas with high humidity, the bag filter is prone to the phenomenon of "pasting bags" due to condensation of smoke and dust, which greatly reduces the air flow rate

[0005] 2. The overall area is large, and it uses three independent systems of spraying, electrostatic and cloth bag, which not only occupies a large area, but also invests a lot of money, so it is not suitable for promotion

[0006] 3. The removal effect of ultra-fine particles is not good. At present, it is difficult to remove ultra-fine particles with the mesh number setting of the hole of the bag, and as long as the ultra-fine particles enter the bag, they are regarded as part of the clean air

In the prior art, there is also a technology to return the clean air to the bag filter, but it consumes a lot of energy, and the removal of ultrafine particles is not only untargeted, but the effect is not good

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