Exergetic analysis of coal gasification processes

Conference · Mon Dec 01 04:00:00 EST 1980 · Alternative Energy Sources; (United States)

OSTI ID:5165786

Johnson, P; Conger, W L

In this study, the efficiency and economics of the Synthane Gasification process are evaluated and discussed. The efficiency of the Synthane process was determined using the exergy analysis (availability) approach to process evaluation. The exergy analysis utilizes both the first and second laws of thermodynamics to determine the efficiency of a process, and is very useful in determining the causes of inefficiency. In order to accurately apply the exergy analysis, it is essential that the absolute enthalpy and entropy values of each stream be determined. In this study, methods for predicting the enthalpy and entropy of coal, char, tar, and ash, as a function of temperature and material composition previously developed were used. A computer simulation of the Synthane process was developed which allowed for the effect of changes in plant operating parameters on both the efficiency and economics. The simulation included a three-section model of the Synthane fluidized bed gasifier.

• Research Organization: Union Carbide, Oak Ridge, Tennessee
• OSTI ID: 5165786
• Report Number(s): CONF-801210-
• Conference Information: Journal Name: Alternative Energy Sources; (United States) Journal Volume: 6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBONACEOUS MATERIALS
COAL
COAL GASIFICATION
COAL GASIFICATION PLANTS
COMPUTERIZED SIMULATION
COST
ECONOMICS
EFFICIENCY
ENERGY
ENERGY SOURCES
EVALUATION
EXERGY
FOSSIL FUELS
FUELS
GASIFICATION
INDUSTRIAL PLANTS
MATERIALS
SIMULATION
SNG PROCESSES
SYNTHANE PROCESS
THERMOCHEMICAL PROCESSES