Preignition volatile yield as related to coal characteristics. Quarterly report, April 1981-June 1981

Technical Report · Wed Jul 01 04:00:00 EDT 1981

OSTI ID:6161957

The objectives of this work is to determine the total release of volatile material from a variety of coals under high heating rates and high temperature and to study the effects of enhanced volatile matter release on the design of pulverized coal combustion systems. Twelve coals from the list of selected coals have been received and are currently being characterized regarding their proximate and ultimate analysis, reflectance, surface area, and petrographic composition. Devolatilization experiments have been completed at two temperature levels for nine of the twelve coals. In addition the effect of particle size on preignition volatile yield has been investigated for Illinois No. 6 coal. The relation between preignition volatile yield and such coal characteristics as: (1) carbon content; (2) hydrogen to carbon ratio; (3) proximate volatile matter; (4) reflectance; (5) surface area; and (6) various functions of the petrographic composition have been studied. From the coals tested thus far the most direct relation is between the volatile yield and carbon content. The AERL coal combustion model has been modified to allow exploration of the effect of preignition volatile yeilds on flame stability in a swirl burner.

• Research Organization: Avco-Everett Research Lab., Inc., Everett, MA (USA)
• DOE Contract Number: AC22-80PC30290
• OSTI ID: 6161957
• Report Number(s): DOE/PC/30290-T3; ON: DE81027584
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
30 DIRECT ENERGY CONVERSION
300100 -- Direct Energy Conversion-- MHD Generators
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DATA
DEVOLATILIZATION
DIRECT ENERGY CONVERTERS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GEOLOGY
HEATING RATE
INFORMATION
MATERIALS
MATHEMATICAL MODELS
MHD GENERATORS
NUMERICAL DATA
OXIDATION
PARTICLE SIZE
PETROLOGY
SIZE
THERMOCHEMICAL PROCESSES