Measurement of nitrogen and sulfur pollutants in an entrained-coat gasifier

Journal Article · Tue Feb 01 04:00:00 EST 1983 · Ind. Eng. Chem. Fundam.; (United States)

DOI:https://doi.org/10.1021/i100009a019· OSTI ID:6035706

Price, T D; Hedman, P O; Smoot, L D

Fifteen tests with a highly volatile bituminous coal were conducted in a laboratory gasifier wherein nitrogen (HCN, NH/sub 3/, NO, fuel-N) and sulfur pollutants (H/sub 2/S, SO/sub 2/, fuel-S) were measured for gas-liquid-solid samples. The samples were removed from within the gasifier by a water-quench probe at various axial and radial locations. Generally, concentrations of H/sub 2/S, HCN, and NH/sub 3/ diminished and SO/sub 2/ and NO increased as O/sub 2//coal ratio increased. Increasing steam/coal ratio suppressed all pollutant levels, partly through reduction in nitrogen and sulfur emissions from the coal. High SO/sub 2/ levels formed quickly in the gasifier, possibly from reaction with oxygen in the gas phase. Significant quantities of sulfur and nitrogen were still in the char at the gasifier exit, since carbon conversion was not complete. High SO/sub 2/ and NO levels in aft-regions were attributed to the oxidizer-rich atmosphere resulting from incomplete carbon conversion.

• Research Organization: Combustion Laboratory, Chemical Engineering Department, Brigham Young University, Provo, Utah 84601
• OSTI ID: 6035706
• Journal Information: Ind. Eng. Chem. Fundam.; (United States), Journal Name: Ind. Eng. Chem. Fundam.; (United States) Vol. 1; ISSN IECFA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AMMONIA
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
COAL
COAL GASIFICATION
CYANIDES
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASIFICATION
HYDRIDES
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ACIDS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDES
OXIDIZERS
OXYGEN COMPOUNDS
POLLUTANTS
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES