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EMISSION OF ORGANIC HAZARDOUS AIR POLLUTANTS FROM THE COMBUSION OF PULVERIZED COAL IN A SMALL-SCALE COMBUSTOR
Citation:
Miller*, C A., R K. Srivastava, AND J V. Ryan*. EMISSION OF ORGANIC HAZARDOUS AIR POLLUTANTS FROM THE COMBUSION OF PULVERIZED COAL IN A SMALL-SCALE COMBUSTOR. ENVIRONMENTAL SCIENCE & TECHNOLOGY 28(6):1150-1158, (1994).
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Description:
The emissions of hazardous air pollutants (HAPs) from the combustion of pulverized coal have become an important issue in light of the requirements of Title I11 of the 1990 Clean Air Act Amendments, which impose emission limits on 189 compounds and compound classes. Although previous field and laboratory studies have examined the emissions of some HAPs from coal combustion sources, no work has been done to evaluate the emissions of a broad range of these compounds, particularly in the case of organics. Therefore, a study was conducted at the US. Environmental Protection Agency’s Air and Energy Engineering Research Laboratory to characterize emissions of 76 organic HAPs in the flue gases from the combustion of pulverized coal in a small-scale down-fired combustor. The combustor was operated under different conditions to simulate baseline, high excess air firing, and nitrogen oxide (NO,) controls by combustion modifications. Samples were extracted near the combustor exit, upstream of any pollution control equipment. Data collected indicate that relatively low levels of organic HAPs are present in the flue gases for any of the combustion conditions; however, several compounds were present that have not been reported in previous studies. To the extent these small-scale tests accurately simulate full-scale units, estimates based on these experiments indicate that the total HAP emissions from a large utility power plant are not likely to increase significantly due to the installation of combustion modification techniques for NO, control.
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EMISSION OF ORGANIC HAZARDOUS AIR POLLUTANTS FROM THE COMBUSION OF PULVERIZED COAL IN A SMALL-SCALE COMBUSTOR (PDF, NA pp, 481 KB, about PDF)