To meet current and future emission control standards, a paper manufacturing plant selected a turnkey system by AirPol, Inc.
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In selecting the AirPol system, the paper manufacturer established clear requirements. It had to meet the gas volume per boiler requirement of approximately 450,000 ACFM at 390°F, with a maximum particulate loading of 2,680 pounds/hr. It had to handle process gas volume fluctuations for the two boilers, which operated 24/7. It also had to be adaptable to meet future control standards. And, it had to accommodate a strict limitation for liquid discharge from the stacks.
AirPol's system incorporated two gas-leaning systems. Each Venturi is equipped with a double-bladed, large-diameter, adjustable-throat scrubber, which ensures constant pressure drop to accommodate variations in flue gas volume. Also included is a cyclone separator, exhaust stack and recycle tank. The project included structural support towers, stairways, ductwork, instrumentation, demolition of existing equipment and installation, commissioning and startup.
After start-up, the system met state requirements for particulate emissions,not to exceed 0.28 pounds per million BTU at a maximum inlet (118.4 lbs/hr at average inlet.) Actual results were less than one-third of the allowable pressure drop. Performance testing after startup confirmed compliance and determined no discharge of droplets from the stacks.
