ADVANCED FLUE GAS CONDITIONING AS A RETROFIT UPGRADE TO ENHANCE PM COLLECTION FROM COAL-FIRED ELECTRIC UTILITY BOILERS

Bustard, C. Jean ; Baldrey, Kenneth E. ; Schlager, Richard

Federal Energy Technology Center (U.S.)

关键词: Boilers;    Air Pollution Control;    01 Coal, Lignite, And Peat;    Performance Testing;    Coal;   

DOI  :  10.2172/778928
RP-ID  :  FC26-00NT40755--01
RP-ID  :  FC26-00NT40755
RP-ID  :  778928

美国|英语

来源: UNT Digital Library

【 摘 要 】

The U.S. Department of Energy and ADA Environmental Solutions has begun a project to develop commercial flue gas conditioning additives. The objective is to develop conditioning agents that can help improve particulate control performance of smaller or under-sized electrostatic precipitators on utility coal-fired boilers. The new chemicals will be used to control both the electrical resistivity and the adhesion or cohesivity of the flyash. There is a need to provide cost-effective and safer alternatives to traditional flue gas conditioning with SO{sub 3} and ammonia. Preliminary testing has identified a class of common deliquescent salts that effectively control flyash resistivity on a variety of coals. A method to evaluate cohesive properties of flyash in the laboratory has been selected and construction of an electrostatic tensiometer test fixture is underway. Preliminary selection of a variety of chemicals that will be screened for effect on flyash cohesion has been completed.