Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Economics of electricity and SNG from in situ coal gasification

Conference · · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)
OSTI ID:6415515
; ;
Conceptual process designs and cost estimates are presented for two potential applications of underground coal gasification: a 900MW(e) combined-cycle electric generating plant fueled by low-Btu gas, and a substitute natural gas (SNG) plant producing 155 MMscfd of 954 Btu/scf gas. Designs were based on experimental data obtained at the Laramie Energy Research Center on subbituminous coal using the linked vertical well in situ gasification process. Respective capital investments were estimated to be $395 and $351 million in first-quarter 1977 dollars. Product prices were calculated as a function of the debt/equity ratio, the annual earning rates on debt and equity, the cost of coal, and plant factor (onstream efficiency). Using a debt/equity ratio of 70/30, an interest rate on debt of 9%, an after-tax earning rate on equity of 15%, and a coal feed cost of $5/ton, product prices were 24 mills/kWh for electricity at 70% plant factor and $2.89/10/sup 6/ Btu for SNG at 90% plant factor. Calculated overall thermal efficiencies for the two facilities were 24 and 38% respectively, based on in-place coal.
Research Organization:
Oak Ridge National Lab., TN
OSTI ID:
6415515
Report Number(s):
CONF-780902-P1
Conference Information:
Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 23:3
Country of Publication:
United States
Language:
English

Similar Records

Economics of electricity and SNG from in situ coal gasification
Conference · Sat Dec 31 23:00:00 EST 1977 · OSTI ID:6874095
Process designs and economic evaluations for the linked vertical well in situ coal gasification process
Technical Report · Wed Aug 01 00:00:00 EDT 1979 · OSTI ID:6086600
Evaluation of an in situ coal gasification facility for producing M-gasoline via methanol
Technical Report · Fri Nov 30 23:00:00 EST 1979 · OSTI ID:5627594

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
015000 -- Coal
Lignite
& Peat-- Economic
Industrial
& Business Aspects
20 FOSSIL-FUELED POWER PLANTS
200106 -- Fossil-Fueled Power Plants-- Economics
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
ECONOMICS
EFFICIENCY
ENERGY SOURCES
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH BTU GAS
IN-SITU GASIFICATION
IN-SITU PROCESSING
LOW BTU GAS
POWER GENERATION
POWER PLANTS
PROCESSING
THERMAL EFFICIENCY
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES