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Electrostatic precipitator

A technology of electrostatic precipitator and cyclone dust collector, applied in the field of electrostatic precipitator device, can solve problems such as large pressure loss and easy blockage of filters

Active Publication Date: 2016-10-05
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As such a PM removal device, there is a method of installing a filter in the exhaust pipe, but there is a problem that the filter is easily clogged and the pressure loss is large.

Method used

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Examples

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Embodiment Construction

[0062] Embodiments of the present invention will be described below with reference to the drawings.

[0063] figure 1 It is a perspective view showing a part of the housing showing the first embodiment of the present invention cut away.

[0064] In the figure, 1 is an electrostatic precipitator, which can capture, for example, particulate matter (PM: Particulate Matter) whose main component is carbon and whose particle size is less than 100 μm, especially the particle size Suspended particulate matter (SPM: Suspended Particulate Matter) below 10 μm.

[0065] The electrostatic precipitator 1 has, for example, a cube-shaped frame body 2, and a plurality of groups of dust-collecting electrodes 40 are arranged in the frame body 2, and the dust-collecting electrodes 40 are composed of, for example, square plate electrodes 20 and discharge electrodes 30. Among them, such as figure 2 As shown, the discharge electrode 30 is opposed to one surface of the plate-shaped electrode 20 ...

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Abstract

Provided is an electrostatic precipitator that does not require a large-capacity extraction device when collecting a PM, demonstrates high dust collection performance which is free from clogging or re-entrainment under high-blowing-rate conditions, and has a low probability of malfunctioning. The apparatus includes a plate-shaped electrode (20) having formed therein a plurality of through holes that allow the PM to pass therethrough; a discharge electrode (30) disposed to face one surface of the plate-shaped electrode; a discharge generating unit that applies a voltage between the plate-shaped electrode and the discharge electrode and generates an electric discharge imparting a Coulomb force to the PM; a collection region that is formed on an opposite side of the plate-shaped electrode to a surface thereof facing the discharge electrode and collects the PM; a gas flow-through region (33) that is formed between the plate-shaped electrode and the discharge electrode and allows a PM-containing gas to flow therethrough; and a PM recovery unit (50) that causes a recovery gas to flow through in the collection region in a direction crossing the flow-through direction of the PM-containing gas and strips away and recovers the collected PM in a flow-through state of the PM-containing gas.

Description

technical field [0001] The present invention relates to an electrostatic precipitator for removing PM from PM-containing gas such as internal combustion engine exhaust gas containing particulate matter (PM: Particulate Matter). Background technique [0002] The exhaust gas discharged from the internal combustion engine contains harmful substances such as PM whose main component is carbon, in addition to NOx and SOx. It is well known that inhaling PM into the human body through breathing causes various health hazards, so the development of a PM removal device capable of effectively removing PM is expected. [0003] As such a PM removal device, there is a method of installing a filter in the exhaust pipe, but there is a problem that the filter is easily clogged, resulting in a large pressure loss. In contrast, the electrostatic precipitator does not become clogged and has a small pressure loss, so it is suitable for installation in an exhaust pipe of an internal combustion en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C3/51B03C3/15B03C3/40B03C3/74B03C3/88
CPCB03C3/017B03C3/06B03C3/08B03C3/09B03C3/12B03C3/15B03C3/368B03C3/41B03C3/47B03C3/51B03C3/74B03C2201/10B03C2201/12B03C2201/30
Inventor 乾贵志川上一美吉田将隆三塚康史
Owner FUJI ELECTRIC CO LTD
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