Electrostatic precipitator

The electrostatic precipitator design efficiently removes particulates using a high-voltage filter element and collection electrode configuration, integrated with self-cleaning and liquid curtain features, addressing build-up issues and enhancing operational efficiency and device protection.

WO2025172699A1 Publication Date: 2025-08-21EDWARDS LTD
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Patent Information

Application Number
PCT/GB2025/050261
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-02-13
Filing Date
2025-02-12
Publication Date
2025-08-21

AI Technical Summary

Technical Problem

Existing electrostatic precipitators face inefficiencies in particulate removal, leading to particulate build-up that causes short circuits and reduced operational efficiency, particularly affecting downstream devices prone to fouling.

Method used

An electrostatic precipitator design with a charging electrode, filter element, and collection electrode configuration, where the filter element is held at a higher voltage than the charging electrode, repelling charged particulate matter towards the collection electrode, integrated with a self-cleaning mechanism and a liquid curtain to prevent build-up.

Benefits of technology

Enhances particulate removal efficiency, protects downstream devices from fouling, and extends the mean time between servicing by preventing particulate build-up, while maintaining effective operation.

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Abstract

The present invention provides an electrostatic precipitator for treating a gas stream carrying particulate matter. The electrostatic precipitator comprises a housing defining a chamber, the housing comprising an inlet configured to enable the gas stream carrying particulate matter to enter the chamber, and an outlet configured to enable the treated gas stream to exit the chamber. The electrostatic precipitator further comprises a charging electrode arranged within the chamber towards the inlet, a filter element arranged within the chamber towards the outlet such that to reach the outlet the gas stream passes through the filter element, an insulator element arranged between the charging electrode and the filter element, and a collection electrode configured to be held at electrical earth. The charging electrode is configured to be held at a first high voltage potential such that particulate matter in the gas stream becomes charged as it passes the charging electrode, and the filter element is configured to be held at a second high voltage potential that is greater than the first high voltage potential, such that when the gas stream is conveyed through the filter element to the outlet, charged particulate matter is repelled from the filter element towards the collection electrode. The invention further provides a method for removing particulate matter from a gas stream.
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