Boiler Replacement and NO^sub x^

摘要

Replacing old steam systems can improve efficiency, cut costs and reduce emissions. A few years ago, the Department of Energy recognized TPC Group for the energy efficiency of a new steam turbine it installed to run a compressor and recently TPC replaced aging boilers with two new units from Rentech using Coen ultra-low-NOx burners. Due to changes in the plant's process, steam requirements have dropped from 1.5 million pounds per hour to between 850,000 and 1.2 million pounds. Completely building a unit on site, however, was cost-prohibitive, so TPC contracted with Rentech Boiler Systems Inc to prefabricate components and assemble them on site. The first unit, Boiler Number 10, went live in mid-2006 and Boiler 11 by the end of the year. In August 2008, the boilers underwent a scheduled outage, one at a time. The main problem to address was the flame failures.