'State of the Art Combustion Upgrades to Achieve Industrial Boiler MACT Compliance'

摘要

This paper discusses a proprietary combustion optimization approach (Stack Air System - SAS) designed to help the industrial boiler operators to comply with the Industrial Boiler MACT, a regulation which monitors hazardous air pollutants (HAPs) and/or HAP surrogates from industrial boilers and a case study of its most recent installation at Boise Cascade. This combustion optimization provides sufficient turbulence to properly mix fuel and combustion air, and provides longer residence times, generating higher flame temperatures that result in a more efficient combustion process. It generally supplies with PLC controls for combustion air, undergrate, and overfire that interface with the plant's existing control system. Depending on the application, changes to the combustion air system may include multiple combustion optimization levels and the addition of damper controls to partition undergrate air sections. The integrated solutions contain customized additional offerings as necessary such as auxiliary natural gas burners, uninterrupted Power Supply (UPS) and other options for the BCS/BMS systems. These combined solutions meet or exceed expectations and position the facility to achieve a comfortable margin to achieve IB MACT compliance, and in addition can help reduce MACT air pollution control footprint, investment and operating costs.