Porcelain insulators in electrostatic precipitator

• We have clarify the main working conditions of an ESP.
• The main used porcelains are presented.
• We have proposed porcelain with high alumina content.
• The main reasons of a breakage and their solutions are mentioned.
• Maintenance good practises and systems to avoid dust-layer are suggested.

Electrostatic precipitators (ESPs) are commonly the most used filtration technology at industrial environments considering that ESPs allow to have a high dedusting efficiency. ESP insulators are key components in a precipitator inasmuch as if they do not work properly, the efficiency decreases quickly, and even having an inadequate insulation can end up in a serious accident. Therefore, there are several recommendations given about the adequate material for each insulator type and also about how to maintain an ESP insulator in good working conditions.

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