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. Volume 1 contains papers from the following sessions: Background; Large Scale Coal Combustion I; and Large Scale Coal Combustion II.

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.

NOx emissions reduction in the former German Democratic Republic / B. Kassebohm and S. Streng -- 'Top-down' BACT analysis and recent permit determinations / J. Cochran and M. Fagan -- Analysis of retrofit costs and performance of NOx controls at 200 U.S. coal-fired power plants / T. Emmel and M. Maibodi -- Nitrogen oxides emission reduction project / L. Johnson -- The global atmospheric budget of nitrous oxide / J. Levine -- Development and evolution of the ABB Combustion Engineering Low NOx Concentric Firing System / J. Grusha and M. McCartney -- Performance of a large cell-burner utility boiler retrofitted with Foster Wheeler low-NOx burners / T. Lu, R. Lungren, and A. Kokkinos -- Design and application results of a new European low-NOx burner / J. Pedersen and M. Berg -- Application of gas reburning-sorbent injection technology for control of NOx and SOb2s emissions / W. Bartok, B. Folsom, T. Sommer, J. Opatmy, E. Mecchia, R. Keen, T. May and M. Krueger -- Retrofitting of the Italian Electricity Board's thermal power boilers / R. Tarli, A. Benanti, G. De Michele, A. Piantanida and A. Zennaro -- Retrofit experience using LNCFS on 3350MW and 165MW coal fired tangential boilers / T. Hunt, R. Hawley, R. Booth and B. Breen -- Update 91 on design and application of low NOx combustion technologies for coal fired utility boilers / T. Uemura, S. Morita, T. Jimbo, K. Hodozuka and H. Kuroda -- Demonstration of low NOx combustion control technologies on a 500 MWe coal-fired utility boiler / S. Wilson, J. Sorge, L. Smith and L. Larsen -- Reburn technology for NOx control on a cyclone-fired boiler / R. Borio, R. Lewis and M. Keough -- Full scale retrofit of a low NOx axial swirl burner to a 660 MW utility boiler, and the effect of coal quality on low NOx burner performance / J. King and J. Macphail -- Update on coal reburning technology for reducing NOx in cyclone boilers / A. Yagiela, G. Maringo, R. Newell and H. Farzan -- Demonstration of low NOx combustion techniques at the coal/gas-fired Maas Power Station Unit 5 / J. van der Kooij, H. Kwee, A. Spaans, J. Puts and J. Witkamp -- Three-stage combustion (reburning) on a full scale operating boiler in the U.S.S.R. / R. LaFlesh, R. Lewis, D. Anderson, R. Hall and V. Kotler.