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Automatic backwashing filter

A backflushing and filter technology, which is applied in the direction of dispersed particle filtration, chemical instruments and methods, and dispersed particle separation, can solve the problems that the filter cannot remove sulfur-containing and nitrate-containing pollutants, and the delay of differential pressure monitoring is inaccurate, and achieves The effect of timely and accurate pressure monitoring and prolonging the service life

Inactive Publication Date: 2014-10-08
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the delay and inaccuracy of pressure difference monitoring proposed above, and the existing filter cannot remove sulfur-containing and nitrate-containing pollutants, and researches and designs an automatic backflushing filter

Method used

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  • Automatic backwashing filter

Examples

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Embodiment Construction

[0022] Such as figure 1 As shown, an automatic backflushing filter includes a housing 15, a ceramic filter 2, a filter fixing plate 14 and a control unit 5, the housing 15 is provided with an exhaust gas inlet 1 and an exhaust gas outlet 3, and the filter fixing plate 14 Divide the space inside the housing 15 into an upper clean gas chamber 16 and a lower dust-laden gas chamber 17, and the opening end of the ceramic filter 2 is fixed on the filter fixing plate 14 toward the clean gas chamber 16, including back blowing Washing pipe 9, one end of the backflushing pipe 9 is located in the ceramic filter 2, and the other end is connected to the compressed air main pipe 8, the compressed air main pipe 8 is provided with a compressed air control valve 4, and the bottom of the housing is provided There is a dust discharge port 18 controlled by a dust discharge valve 10, a dust-containing gas pressure sensor 7 is provided in the dust-containing gas chamber 17, a clean gas pressure sen...

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Abstract

The invention discloses an automatic backwashing filter. The automatic backwashing filter comprises a shell, ceramic filters, filter fixing plates, a control unit, a compressed air header pipe and backwashing pipes, wherein a dust discharge opening controlled by a dust control valve is arranged below the shell; a dust-contained gas chamber is internally provided with a dust-contained gas pressure sensor; a clean gas chamber is internally provided with a clean gas pressure sensor; a compressed air control valve, the dust-contained gas pressure sensor and the clean gas pressure sensor are all connected with the control unit. According to the invention, the trouble of cleaning the filter by taking down is prevented, and the filter can be automatically backwashed; the ceramic filters act as catalyst carriers for denitrification reaction, and catalysts can be prevented from being poisoned because of attachment of dust by backwashing; the pressure monitoring is timely and accurate; the service life of a filter element can be prolonged.

Description

technical field [0001] The invention relates to a filter, in particular to an automatic backflushing filter. Background technique [0002] At present, marine diesel engines burn low-quality fuel oil, and the exhaust gas produced by power plants contains a large amount of pollutants. The solid particles in them are discharged into the atmosphere, increasing PM2.5 and affecting people's living environment. Existing ships rarely use exhaust gas treatment devices to treat exhaust gas. After treatment, it is discharged into the atmosphere, and the International Maritime Organization (IMO) is gradually improving the emission standards of ship exhaust. [0003] In the existing equipment for filtering exhaust gas, it is impossible to filter small solid particles with ordinary filters, and the smaller particles will be discharged into the atmosphere along with the exhaust gas. Moreover, the replacement frequency of ordinary filters is high, and they do not have the ability to backwas...

Claims

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Application Information

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IPC IPC(8): B01D46/24B01D53/88B01D53/90B01D53/56
Inventor 张洪朋孙玉清刘后祥张兴明
Owner DALIAN MARITIME UNIVERSITY
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