Reaction kinetics and physical mechanisms of ash agglomeration. Progress report, August 24-November 23, 1984

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5745412

Carty, R H; Mason, D M; Babu, S P

The work performed on the research program, ''Reaction Kinetics and Physical Mechanisms of Ash Agglomeration,'' is described. This program consists of four tasks: (1) Test Plan Development, (2) Effect of Mineral Type and Distribution on Ash Behavior, (3) Rates of Mineral Matter Interaction in the Gasifier Oxidation Zone, and (4) Ash Particle Dynamics Studies. The research program addresses the key issues of ash particle contact, conditions and rates of reaction of mineral matter, and agglomeration conditions in fluidized-bed gasification. In particular, the objectives of the investigation are: to determine the effect of coal mineral matter variation on the behavior of ash and to correlate this behavior to a detailed petrographic analysis of the mineral matter present in the coal; to determine the reaction rates of individual clays and silica with the pyrite and carbonates of coal as a function of temperature, pressure, and gas composition; and to determine the feasibility of employing the dielectrophoretic manipulation technique to identify the conditions under which colliding ash particles coalesce, shatter, or deposit. The test plan for Task 1 was completed and was approved by the Department of Energy. Also, selection of the coals to be tested in the study of the effect of mineral matter type and distribution on ash behavior was begun.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-84MC21313
• OSTI ID: 5745412
• Report Number(s): DOE/MC/21313-T1; ON: DE85011796
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
AGGLOMERATION
ASHES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CLAYS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
KINETICS
MATERIALS
MINERALS
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
PYRITE
REACTION KINETICS
RESIDUES
SILICATES
SILICON COMPOUNDS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS