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Formation and control of fuel-nitrogen pollutants in catalytic combustion of coal-derived gases : quarterly report

Author: Frediano V BraccoC BrunoB -S KimD A SantaviccaJ SemlerAll authors
Publisher: Washington, DC : United States Government Printing Office, 1978.
Series: Fossil energy, FE-2762-3.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
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  Read more...
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Additional Physical Format: Online version:
Bracco, Frediano V.
Formation and control of fuel-nitrogen pollutants in catalytic combustion of coal-derived gases.
Washington, DC : United States Government Printing Office, 1978
(OCoLC)1012340633
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Frediano V Bracco; C Bruno; B -S Kim; D A Santavicca; J Semler; P M Walsh; Princeton University. Department of Aerospace and Mechanical Sciences.; United States. Department of Energy.
OCLC Number: 4389962
Notes: Mar. 15, 1978.
Description: 11 pages : illustrations ; 28 cm
Series Title: Fossil energy, FE-2762-3.
Responsibility: by F.V. Bracco, C. Bruno, B.-S. Kim, D.A. Santavicca, J. Semler, P.M. Walsh.

Abstract:

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.

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