The sulfur retention of calcium-containing coal during fuel-rich combustion

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(82)90044-X· OSTI ID:5214773

Freund, H; Lyon, R K

The fuel-rich combustion of coals containing calcium in various forms has been studied in a tubular downflow reactor to determine whether or not coal-bound sulphur can be efficiently retained as CaS in the recovered solids. Although physical mixtures of coal and limestone gave only limited sulphur retention, it was discovered that, under certain critical conditions, coals in which calcium had been atomically dispersed by ion exchange could be burned with the bulk of the sulphur remaining in the recovered ash/char mixture. The effect of various experimental parameters upon this new sulphur retention process are reported. Char characterization was done using scanning electron microscopy and x-ray diffraction. Analysis of the data indicated that under the conditions of these experiments, the extent of CaS formation was equilibrium limited when ion exchange Ca was used but less than equilibrium for bulk Ca.

• OSTI ID: 5214773
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 45:2; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
ADDITIVES
AIR POLLUTION ABATEMENT
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CALCIUM
CALCIUM COMPOUNDS
CALCIUM SULFIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTIONS
COAL
COMBUSTION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUEL ADDITIVES
FUELS
ION EXCHANGE
MATERIALS
METALS
NONMETALS
OXIDATION
PARAMETRIC ANALYSIS
POLLUTION ABATEMENT
PYROLYSIS PRODUCTS
RETENTION
SULFIDES
SULFUR
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES