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1. (WO2018221207) DISCHARGE ELECTRODE OF ELECTROSTATIC PRECIPITATOR FOR TREATING DIESEL ENGINE EXHAUST GAS

Pub. No.:    WO/2018/221207    International Application No.:    PCT/JP2018/018790
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 16 01:59:59 CEST 2018
IPC: B03C 3/41
B03C 3/40
B03C 3/49
F01N 3/01
Applicants: USUI CO., LTD.
臼井国際産業株式会社
Inventors: FURUGEN Munekatsu
古堅 宗勝
MAKINO Tadashi
牧野 義
TAKIKAWA Kazunori
滝川 一儀
ICHIKAWA Junichi
市川 順一
Title: DISCHARGE ELECTRODE OF ELECTROSTATIC PRECIPITATOR FOR TREATING DIESEL ENGINE EXHAUST GAS
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.