An engineering model for coal devolatilization

Technical Report · Fri Jul 01 04:00:00 EDT 1988

OSTI ID:5751037

Lau, Wei Chun; Niksa, S

There are three distinct modeling projects in this program: (1) A reaction model for coal devolatilization which is compatible with large scale combustor simulators yet predicts the yields of tar, gas, char, and unreacted coal throughout the technological operating domain, with heuristic parameter adjustments for different coal types; (2) A theoretical framework based on bona fide depolymerization kinetics with reattachment into char and flash distillation of volatiles, to explain the behavior of different coal types; and (3) an analysis of the chemistry, heat and mass transport in the vicinity of individual coal particles, to begin to describe the initial stages of the combustion of entrained coal particles. Progress is discussed. 15 refs., 10 figs., 2 tabs.

• Research Organization: Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG22-88PC88900
• OSTI ID: 5751037
• Report Number(s): DOE/PC/88900-1; ON: DE91014392
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL
COMBUSTION
DECOMPOSITION
DEPOLYMERIZATION
DEVOLATILIZATION
DOCUMENT TYPES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
KINETICS
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PRESSURE EFFECTS
PROGRESS REPORT
PYROLYSIS PRODUCTS
TAR
THERMOCHEMICAL PROCESSES
YIELDS