Combustion Byproducts Recycling Consortium

Paul Ziemkiewicz ; Tamara Vandivort ; Debra Pflughoeft-Hassett ; Y. Paul Chugh ; James Hower

关键词: AMMONIA;    CARBON;    CEMENTS;    CLEAN AIR ACTS;    COAL;    COMBUSTION;    DESULFURIZATION;    ELECTRIC UTILITIES;    ENVIRONMENTAL IMPACTS;    FLUE GAS;    FLY ASH;    GASIFICATION;    MANAGEMENT;    MODIFICATIONS;    PRODUCTION;    RECYCLING;    REGULATIONS;    SULFUR;   

DOI  :  10.2172/982248
RP-ID  :  None
PID  :  OSTI ID: 982248
Others  :  TRN: US201014%%255

美国|英语

来源: SciTech Connect

【 摘 要 】

Each year, over 100 million tons of solid byproducts are produced by coal-burning electric utilities in the United States. Annual production of flue gas desulfurization (FGD) byproducts continues to increase as the result of more stringent sulfur emission restrictions. In addition, stricter limits on NOx emissions mandated by the 1990 Clean Air Act have resulted in utility burner/boiler modifications that frequently yield higher carbon concentrations in fly ash, which restricts the use of the ash as a cement replacement. Controlling ammonia in ash is also of concern. If newer, 'clean coal' combustion and gasification technologies are adopted, their byproducts may also present a management challenge. The objective of the Combustion Byproducts Recycling Consortium (CBRC) is to develop and demonstrate technologies to address issues related to the recycling of byproducts associated with coal combustion processes. A goal of CBRC is that these technologies, by the year 2010, will lead to an overall ash utilization rate from the current 34% to 50% by such measures as increasing the current rate of FGD byproduct use and increasing in the number of uses considered 'allowable' under state regulations. Another issue of interest to the CBRC would be to examine the environmental impact of both byproduct utilization and disposal. No byproduct utilization technology is likely to be adopted by industry unless it is more cost-effective than landfilling. Therefore, it is extremely important that the utility industry provide guidance to the R&D program. Government agencies and private-sector organizations that may be able to utilize these materials in the conduct of their missions should also provide input. The CBRC will serve as an effective vehicle for acquiring and maintaining guidance from these diverse organizations so that the proper balance in the R&D program is achieved.