Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases written by Frediano V. Bracco and published by . This book was released on 1978 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The review of data on NH3 and HCN concentrations in the low /medium-Btu off-gases from the Mond, Riley-Morgan, Lurgi, Koppers-Totzek, Hygas and Synthane coal gasifiers indicates that NH3 is present at concentrations of 385-11,000 ppmV and HCN at concentrations up to 300 ppmV. There is a tendency for NH3 concentration to increase as the heating value of the low /medium-Btu gas increases. The observed NH3 concentrations are consistently greater than calculated equilibrium values even when the lowest possible gasifier temperatures (at the outlet) are assumed. The fraction of coal-bound nitrogen converted to NH3 + HCN is 12 to 91 percent. A rough estimate of the amount of NH3 + HCN in raw low/medium-Btu gases can be obtained by subtracting the nitrogen in gasifier byproducts (ash, char and tar) from the amount of coal-bound nitrogen and assuming complete conversion of the difference to NH3 + HCN. The reported concentrations of NH3 and HCN in purified low/medium-Btu gases indicate that levels of 1 to 10 ppmV NH3 and 1 to 100 ppmV HCN can be reached in low temperature cleanup at the expense of sensible heat.
Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases Final Report written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program has been the elucidation of the mechanism of high temperature catalytic oxidation of coal-derived gases, including their individual constituents, and the effects of sulfur and nitrogen impurities. Detailed experimental data were obtained and a two-dimensional model is being developed and tested by comparison with the experimental data. When complete, the model can be used to optimize designs of catalytic combustors. The model at present includes axial and radial diffusion and gas and surface chemical reactions. Measured substrate temperatures are input in lieu of complete coupling of gas and solid energy conservation equations and radiative heat transfer. Axial and radial gas temperature and composition profiles inside a catalyst channel were computed and compared with experimental measurements at the catalyst outlet. Experimental investigations were made of carbon monoxide and medium-Btu gas combustion in the presence of platinum supported on a monolithic Cordierite substrate. Axial profiles of substrate temperature, gas temperature, and gas composition were determined at different gas velocities and equivalence ratios. The effects of H2S and NH3 in the medium-Btu gas were also investigated. Systems were proposed for making resonance absorption and Raman scattering measurements of gas temperature and/or species concentrations in a catalytic reactor. A new pulsed multipass Raman scattering technique for increasing photon yield from a scattering volume was developed.
Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases written by Princeton University. Dept. of Aerospace and Mechanical Sciences and published by . This book was released on 1978 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases written by Frediano V. Bracco and published by . This book was released on 1978 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The review of data on NH3 and HCN concentrations in the low /medium-Btu off-gases from the Mond, Riley-Morgan, Lurgi, Koppers-Totzek, Hygas and Synthane coal gasifiers indicates that NH3 is present at concentrations of 385-11,000 ppmV and HCN at concentrations up to 300 ppmV. There is a tendency for NH3 concentration to increase as the heating value of the low /medium-Btu gas increases. The observed NH3 concentrations are consistently greater than calculated equilibrium values even when the lowest possible gasifier temperatures (at the outlet) are assumed. The fraction of coal-bound nitrogen converted to NH3 + HCN is 12 to 91 percent. A rough estimate of the amount of NH3 + HCN in raw low/medium-Btu gases can be obtained by subtracting the nitrogen in gasifier byproducts (ash, char and tar) from the amount of coal-bound nitrogen and assuming complete conversion of the difference to NH3 + HCN. The reported concentrations of NH3 and HCN in purified low/medium-Btu gases indicate that levels of 1 to 10 ppmV NH3 and 1 to 100 ppmV HCN can be reached in low temperature cleanup at the expense of sensible heat.
Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases written by Princeton University. Dept. of Aerospace and Mechanical Sciences and published by . This book was released on 1978 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Formation and Control of Fuel nitrogen Pollutants in Catalytic Combustion of Coal derived Gases written by Princeton University. Department of Aerospace and Mechanical Sciences and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1980 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1977 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acid Precipitation written by and published by . This book was released on 1983 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalytic Air Pollution Control written by Ronald M. Heck and published by John Wiley & Sons. This book was released on 2012-04-02 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic Air Pollution Control: Commercial Technology is the primary source for commercial catalytic air pollution control technology, offering engineers a comprehensive account of all modern catalytic technology. This Third Edition covers all the new advances in technology in automotive catalyst control technology, diesel engine catalyst control technology, small engine catalyst control technology, and alternate sustainable fuels for auto and diesel.
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1985 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1981 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
