Evaluation of Mercury Emissions from Coal-Fired Facilities with SCR and FGD Systems. Topical Report No. 2.

Withum, J. A. ; Tseng, S. C. ; Locke, J. E.

Technical Information Center Oak Ridge Tennessee

关键词: Mercury;    Emissions;    Selective catalytic reduction;    Power plants;    Flue gases;   

RP-ID  :  DE2005838805

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

CONSOL Energy Inc., Research & Development (CONSOL), with support from the U.S. Department of Energy, National Energy Technology Laboratory (DOE) is evaluating the effects of selective catalytic reduction (SCR) on mercury (Hg) capture in coal-fired plants equipped with an electrostatic precipitator (ESP) - wet flue gas desulfurization (FGD) combination or a spray dyer absorber--fabric filter (SDA-FF) combination. In this program CONSOL is determining mercury speciation and removal at 10 coal-fired facilities. The objectives are (1) to evaluate the effect of SCR on mercury capture in the ESP-FGD and SDA-FF combinations at coal-fired power plants, (2) evaluate the effect of catalyst degradation on mercury capture; (3) evaluate the effect of low load operation on mercury capture in an SCR-FGD system, and (4) collect data that could provide the basis for fundamental scientific insights into the nature of mercury chemistry in flue gas, the catalytic effect of SCR systems on Hg speciation and the efficacy of different FGD technologies for Hg capture. This document, the second in a series of topical reports, describes the results and analysis of mercury sampling performed on a 330 MW unit burning a bituminous coal containing 1.0% sulfur.