Major Components: Collecting Plate Electrode

Collecting plate electrodes (CE) are designed to receive and retain the precipitated particles until they are intentionally removed into the hopper. Collecting plates are also part of the electrical power circuit of the precipitator. These collecting plate functions are incorporated into the precipitator design. Plate baffles shield the precipitated particles from the gas flow while smooth surfaces provide for high operating voltage.

Collecting plates are suspended from the precipitator casing and form the gas passages within the precipitator. While the design of the collecting plates varies by manufacturer, there are two common designs:

• Plates supported from anvil beams at either end. ¨The anvil beam is also the point of impact for the collecting rapper
• Plates supported with hooks directly from the precipitator casing. ¨Two or more collecting plates are connected at or near the center by rapper beams, which then serve as impact points for the rapping system

Top, center, or bottom spacer bars may be used with either design to maintain collecting plate alignment and sustain electrical clearances to the discharge system.

Helpful Resources

KnowledgeBase: Major Components Overview

KnowledgeBase: Theory of Operations Collecting

KnowledgeBase: Rapping Systems

KnowledgeBase: Optimizing ESP Performance Internal Components

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