Condensate clean-up is a necessity before light-off of a supercritical boiler. It is a rate-limiting step. Pacific Gas & Electric Company's Pittsburg Power Plant installed a start-up condensate polishing filter before the condensate polishers containing eighty-five, forty-inch long, five micron absolute rated filter cartridges to remove corrosion products. The filter has consistently decreased the amount of suspended solids during circulation for clean-up and reduced start-up times by several hours.

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