The report gives results of a preliminary environmental assessment (EA) of the lignite-fired Chemically Active Fluid-Bed (CAFB) process. It follows an earlier EA of the oil-fired CAFB. Waste streams contributing air and solid waste pollutants were evaluated in terms of emission rates and potential environmental effects. Emphasis is placed on flue gas emissions. As part of the investigation, a field sampling and laboratory analysis program was carried out to compile an emissions inventory of the CAFB pilot plant at the Esso Research Centre in Abingdon, England. In addition to the EA, an economic evaluation of the oil-fired CAFB is presented relative to alternative residual oil utilization techniques. Finally, recommendations are made for further control needs and emissions testing to be carried out in conjunction with the CAFB demonstration plant in San Benito, Texas. Particulate emissions were less than those from direct combustion of lignite using multiclones as a control. NOx emissions were quite low: 0.09 lb/million Btu was the highest measured. Light organics were equal to those from conventional units; heavy (> C6) emissions were lower. SOx emissions were half the New Source Performance Standard for coal-fired boilers.

"GCA Corporation, GCA Technology Division." "February 1979." Includes bibliographical references. "Contract no. 68-02-2632, program element no. EHE623."