The symposium was the sixth in a biennial series devoted to the international exchange of information on recent technological and regulatory developments for stationary combustion NOx control. Topics covered included the significant increase in active full-scale retrofit demonstrations of low-NOx combustion systems in the United States and abroad over the past two years; full-scale operating experience in Europe with selective catalytic reduction (SCR); pilot- and bench-scale SCR investigations in the United States; increased attention on selective noncatalytic reduction in the United States; and NOx controls for oil- and gas-fired boilers. Papers from the following sessions are contained in Volume 2: Combustion NOx Developments 1; Large Scale SCR Applications; Post Combustion Developments 1; Industrial/Combustion Turbines on NOx Control.

Key words: pollution; nitrogen oxides; combustion; catalysis; fossil fuels; pollution control; stationary sources; catalytic reduction; noncatalytic reduction. Includes bibliographical references. Prepared for the U.S. Environmental Protection Agency, Office of Research and Development; and the Electric Power Research Institute; by William Nesbit and Associates. Microfiche.

An advanced low-NOx combustion system for gas and oil firing -- NOx reduction and control using an expert system advisor -- An R & D evaluation of low-NOx oil/gas burners for Salem Harbor and Brayton Point units -- Development of an ultra-low NOx pulverizer coal burner -- Reduction of nitrogen oxides emissions by combustion process modification in natural gas and fuel oil flames : fundamentals of low NOx burner design -- Development of low NOx gas burners -- Understanding the German and Japanese coal-fired SCR experience -- Operating experience with tail-end and high-dust DENOX-Technics at the power plant of Heilbronn -- SOb3s generation : jeopardizing catalyst operation? -- SCR operating experience on coal-fired boilers and recent progress -- Technical feasibility and cost of SCR for U.S. utility application -- Application of composite NOx SCR catalysts in commercial systems -- SCR catalyst developments for the U.S. market -- Poisoning mechanisms in existing SCR catalytic converters and development of a new generation for improvement of the catalytic properties -- Status of 1 MW SCR pilot plant tests at Tennessee Valley Authority and New York State Electric & Gas -- Pilot plant investigation of the technology of selective catalytic reduction of nitrogen oxides -- Poisoning of SCR catalysts -- Evaluation of SCR air heater for NOx control on a full-scale gas- and oil-fired boiler -- Nb2sO formation in selective non-catalytic NOx reduction processes -- Tailoring ammonia-based SNCR for installation on power station boilers -- Combustion NOx controls for combustion turbines -- Environmental and economic evaluation of gas turbine SCR NOx control -- NOx reduction at the Argus Plant using the NOxOUT process -- Reburning applied to cogeneration NOx control -- Selective non-catalytic reduction (SNCR) performance on three California waste-to-energy facilities -- Use of natural gas for NOx control in municipal waste combustion.