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Static electric cloth bag compact mixed type dust remover and its running method

A hybrid dust collector technology, which is applied in the field of electrostatic precipitator, bag filter, and particle removal equipment, can solve the problems of reduced electrostatic dust removal efficiency, consumption of cleaning gas, and accelerated bag aging, so as to achieve full utilization and performance improvement , Reduce the effect of dust collection area

Inactive Publication Date: 2008-02-13
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the calculation of the most commonly used Deutsch model for calculating the dust removal efficiency of the electrostatic precipitator, it is found that the dust collection plate with openings in the patent WO 02 / 076618A2 has a removal efficiency of less than 60% of the particles in the flue gas, and in fact due to entering the bag filter area The flue gas does not pass through the complete orifice filter area, and the electrostatic precipitator efficiency will be reduced to a certain extent
If the bag is set to clean dust under a specific pressure, the cleaning frequency may be increased to 4 times due to the opening of the dust collector, which accelerates the aging of the bag and consumes more cleaning gas

Method used

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  • Static electric cloth bag compact mixed type dust remover and its running method
  • Static electric cloth bag compact mixed type dust remover and its running method
  • Static electric cloth bag compact mixed type dust remover and its running method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further described:

[0030] Fig. 2 is an electrostatic bag close-mixing dust collector for implementing the method proposed by the present invention, which adopts a horizontal louver as a grounded dust collection plate that can be opened and closed. In the figure, the flower board at the outlet of the cloth bag, the clean air chamber above, and the electrode power supply, insulation, vibration, and the dust cleaning auxiliary system of the cloth bag are not drawn. The flue gas enters the dust removal chamber composed of the inlet gradual expansion section 1 of the dust collector, the dust collector side plate 2 and the dust collector rear end plate 3 through the inlet gradual expansion section 1. The air chamber (not shown) is then vented.

[0031] Fig. 3 is a plan view from the top of Fig. 2, and the bag of the electrostatic bag close-mixing dust collector is in the working condition of filt...

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PUM

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Abstract

An electrostatic bag closely hybrid dust remover and the operation method are mainly used for the flue gas disposal in a power plant etc. A grounding collecting plate is placed between a high voltage discharge electrode and the bag inside a dust removing room. An electrostatic dust removing area is formed by two sides of the high voltage discharge electrode and the grounding collecting plate; a filtering and dust removing area is formed by two sides of the bag and the grounding collecting plate. When the bag filters, the grounding collecting plate is closed, and the flue gas enters into the dust removing room and goes through the electrostatic dust removing area to arrive at the end of the grounding collecting plate and then enters into the filtering and dust removing area. When the bag reversely blows and cleans ash, the grounding collecting plate opens, the gas and dust for reverse blowing and ash cleaning pass through the grounding collecting plate directly and reach the electrostatic dust removing area, and the dust for reverse blowing and ash cleaning is collected by static electricity. Compared with the prior invention, the dust removal is separated into two steps: when the bag filters, an electrostatic dust remover is completely used to greatly reduce a dust-containing concentration of the flue gas which enters into the bag; when the bag reversely blows and cleans ash, the electrostatic dust remover is used to effectively remove the dust for ash cleaning.

Description

technical field [0001] The invention relates to a device for removing particles in flue gas or gas, in particular to an electric dust collector and a bag filter, and belongs to the technical field of industrial dust removal. Background technique [0002] In industrial production, such as combustion devices for power generation and metal smelting, there are often solid dust particles, namely particulate matter, in the exhaust gas. These particles are scattered in the air, forming gray air masses, and drifting with the wind and falling everywhere, polluting the environment. Some particles with very small particle size can enter the human body from the respiratory tract, and a large amount of heavy metals may be enriched on the surface, which will cause great harm to the health of animals, plants and humans. Some links of industrial production also put forward high requirements on the quality of the air, which also puts forward the demand for the removal of particulate matter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/155B03C3/47B01D50/00
Inventor 姚强宋蔷徐海卫李水清赵江翔龙正伟王秀合徐庆
Owner TSINGHUA UNIV
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