CaO interaction in the staged combustion of coal. Eighth quarterly technical progress report, July 1-September 30, 1982

Technical Report · Sat Oct 30 04:00:00 EDT 1982

OSTI ID:7022348

Levy, A; Merryman, E L

This program is aimed at defining the chemistry and combustion kinetics necessary to optimize the sulfur capture with the ultimate applications of reducing the SO/sub 2/ and NO/sub x/ in the firing of pulverized coal. The program is separated into three tasks: (1) a study of CaS production; (2) a study of CaS oxidation; and (3) a staged combustion study of coal and CaO-treated coals. The Task 3 studies are aimed at defining the chemical and kinetic parameters governing CaS and CaSO/sub 4/ formation in staged combustion. Two combustors are being used in this task. The smaller combustor is being used to examine sulfur capture chemistry under a broad range of experimental conditions. Optimum sulfur conditions determined from the smaller unit will be applied where feasible to the larger unit to determine the effects, if any, of scaled-up operation on sulfur capture chemistry. Conditions of optimum sulfur capture will be examined in the larger unit. The single stage fuel-rich firings in the Task 3A coal-gas (methane) studies continued this quarter. Residence time effects and the possible effects of methane combustion on the sulfur retention process were examined. The Task 3B study of the sulfur capture chemistry in staged combustion using the kilogram/h coal combustor was initiated this quarter. Preliminary runs with raw coal indicate the combustor is operating satisfactorily. (DMC)

• Research Organization: Battelle Columbus Labs., OH (USA)
• DOE Contract Number: AC22-80PC30301
• OSTI ID: 7022348
• Report Number(s): DOE/PC/30301-8; ON: DE83002209
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
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014000* -- Coal
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ALKALINE EARTH METAL COMPOUNDS
ALKANES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CALCIUM SULFATES
CALCIUM SULFIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION KINETICS
COMBUSTORS
DENITRIFICATION
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
KINETICS
MATERIALS
METHANE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REMOVAL
SULFATES
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES