Effects of coal structure on pulverized coal combustion processes: Quarterly technical progress report No. 13, 1 October 1988--31 December 1988

Technical Report · Sun Jan 15 04:00:00 EST 1989

OSTI ID:6521903

Wells, W F; Smoot, L D

The general objective of this study is to define and quantify the relationships between coal composition and structure and associated combustion and conversion behavior for three very different domestic coals of interest. To accomplish this objective, two tasks have been identified. The first is to characterize the virgin coal and the process chars. This will give the necessary information to determine if the char preparation process yields or rates are dependent on coal chemical or physical characteristics. The second task is to measure the high temperature reaction rates of the virgin coals and their derived chars, and to interpret results in light of Task 1. Three coals (lignite, subbituminous, and bituminous) are being processed to provide the following components: (1) organic material extractable from coal by pyridine extraction, (2) the solid residue from this extraction process, and (3) char remaining after a high temperature devolatilization of the virgin coal. The coals and their derived solids will be reacted with air at high temperatures (1300, 1500, and 1700 K) to obtain reactivity data. The reactivity data will then be examined for relationships with the physical and chemical properties. 13 refs., 4 figs.

• Research Organization: Brigham Young Univ., Provo, UT (USA). Combustion Lab.
• DOE Contract Number: FG22-85PC80529
• OSTI ID: 6521903
• Report Number(s): DOE/PC/80529-T10; ON: DE89006021
• 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
ACTIVATION ENERGY
ADSORPTION
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL
COMBUSTION
DOCUMENT TYPES
ENERGY
ENERGY SOURCES
EQUATIONS
EXTRACTION
FOSSIL FUELS
FUELS
KINETICS
LIGNITE
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
MOLECULAR STRUCTURE
OXIDATION
PARTICLE SIZE
POROSITY
PROGRESS REPORT
PYROLYSIS PRODUCTS
REACTION KINETICS
SEPARATION PROCESSES
SIZE
SOLVENT EXTRACTION
SORPTION
SUBBITUMINOUS COAL
SURFACE AREA
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
THERMOCOUPLES