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Proper Design Essential for Storage, Flow and Metering of Powdered Activated Carbon

From Metalfab, Inc.

Powdered activated carbon (PAC) used as a sorbent for control of mercury emissions from coal fired power plants exhibits properties which can present challenging problems for storage, flow and metering. Over time, PAC material can densify and get packed in storage silos and possibly cutting off flow entirely. Controlled flow and accurate metering are critical to effectively using PAC and to achieving targeted mercury emission reductions. Inadequate equipment and system design can result in excessive PAC consumption resulting in high operating costs or insufficient PAC injection resulting in mercury removal rates that are out-of-regulatory compliance.

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