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Title:
DISCHARGE ELECTRODE OF ELECTROSTATIC PRECIPITATOR FOR TREATING DIESEL ENGINE EXHAUST GAS
Document Type and Number:
WIPO Patent Application WO/2018/221207
Kind Code:
A1
Abstract:
[Problem] To provide a discharge electrode of an electrostatic precipitator for treating diesel engine exhaust gas, in which axial intervals (intervals along the flow direction of exhaust gas) of discharge electrodes are changed between the upstream sides and downstream sides of tubular collecting modules, whereby initial electrification of PM, peeling of PM, electrification after peeling, repeating of peeling electrification, etc., are performed easily, PM is reliably collected, and power consumption can be reduced while voltage applied to the electrodes is ensured. [Solution] A discharge electrode of a device for treating diesel engine exhaust gas having a multi-stage precipitation wall structure in which a plurality of tubular collecting modules comprising electrostatic precipitation parts are arranged along a tube-axial direction inside a main collecting tube, the discharge electrode characterized in that axial intervals (intervals along the flow direction of exhaust gas) of electrodes of the tubular collecting modules are arranged far apart on upstream sides of the collecting modules and close together on downstream sides, the upstream sides of the collecting modules are weak-average-field electrode parts, and the downstream sides are strong-average-field electrode parts.

Inventors:
FURUGEN Munekatsu (1-26, Satsukigaoka Nishinomiya-sh, Hyogo 75, 〒6620875, JP)
MAKINO Tadashi (5-1 Takamidai, Takatsuki-shi Osaka, 20, 〒5691020, JP)
TAKIKAWA Kazunori (1-1-402 Sanmaibashi-cho, Numazu-shi Shizuoka, 37, 〒4100037, JP)
ICHIKAWA Junichi (131-2 Nagasawa, Shimizu-cho, Sunto-gu, Shizuoka 10, 〒4118610, JP)
Application Number:
JP2018/018790
Publication Date:
December 06, 2018
Filing Date:
May 15, 2018
Export Citation:
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Assignee:
USUI CO., LTD. (131-2 Nagasawa, Shimizu-cho Sunto-gu, Shizuoka 10, 〒4118610, JP)
International Classes:
B03C3/41; B03C3/40; B03C3/49; F01N3/01
Attorney, Agent or Firm:
OSHIDA Yoshitaka (Ginza Bldg, 3-12 Ginza 3-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
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