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Title: Economics of retrofitting power plants for coal-derived medium-Btu gas. Final report

Abstract

Capital and operating cost estimates have been prepared for over-the-fence retrofitting of existing 500 MWe power plants to burn medium-Btu gas derived from developmental-stage, second-generation, oxygen-blown coal gasification processes. The economics of the retrofit installations, including the complete gasification system costs, have been compared to those of a reference power plant defined as a new, gas-roots, conventional coal-fired boiler facility equipped with flue gas desulfurization. The two types of power plants selected for retrofit are representative of relatively new (1) natural-gas-fired boiler plants and (2) oil-fired combined-cycle units. The reference power plant contains two 500 MWe coal-fired units typical of current new installations. The two oxygen-blown coal gasification systems evaluated for each retrofit were the Texaco process and the Combustion Engineering process. Neither of these gasification processes has been demonstrated at the commercial scale used in this study. Each coal gasification system was treated as a completely separate, self-contained facility supplying medium-Btu fuel gas to an adjacent existing power plant. With coal priced at $1 per million Btu, busbar power costs ranged from 37.6 to 42.3 mills per kilowatt-hour for the retrofit plants and were 38.5 mills per kilowatt-hour for the reference coal-fired boiler plant. It is concluded that furthermore » study of these retrofit options is warranted. Actual implementation of any of the retrofit designs described in this study must await commercial demonstration of the particular coal gasification process.« less

Publication Date:
Research Org.:
Bechtel National, Inc., San Francisco, CA (USA)
OSTI Identifier:
5746062
Report Number(s):
EPRI-AF-1182
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; 29 ENERGY PLANNING, POLICY AND ECONOMY; FOSSIL-FUEL POWER PLANTS; RETROFITTING; FUEL SUBSTITUTION; ECONOMIC ANALYSIS; INTERMEDIATE BTU GAS; CE ENTRAINED FUEL PROCESS; COAL GASIFICATION; ENGINEERING; TEXACO GASIFICATION PROCESS; ECONOMICS; FLUIDS; FUEL GAS; FUELS; GAS FUELS; GASES; GASIFICATION; POWER PLANTS; THERMAL POWER PLANTS; THERMOCHEMICAL PROCESSES; 200108* - Fossil-Fueled Power Plants- Fuels- (1980-); 015000 - Coal, Lignite, & Peat- Economic, Industrial, & Business Aspects; 294001 - Energy Planning & Policy- Coal

Citation Formats

. Economics of retrofitting power plants for coal-derived medium-Btu gas. Final report. United States: N. p., 1979. Web. doi:10.2172/5746062.
. Economics of retrofitting power plants for coal-derived medium-Btu gas. Final report. United States. https://doi.org/10.2172/5746062
. Mon . "Economics of retrofitting power plants for coal-derived medium-Btu gas. Final report". United States. https://doi.org/10.2172/5746062. https://www.osti.gov/servlets/purl/5746062.
@article{osti_5746062,
title = {Economics of retrofitting power plants for coal-derived medium-Btu gas. Final report},
author = {},
abstractNote = {Capital and operating cost estimates have been prepared for over-the-fence retrofitting of existing 500 MWe power plants to burn medium-Btu gas derived from developmental-stage, second-generation, oxygen-blown coal gasification processes. The economics of the retrofit installations, including the complete gasification system costs, have been compared to those of a reference power plant defined as a new, gas-roots, conventional coal-fired boiler facility equipped with flue gas desulfurization. The two types of power plants selected for retrofit are representative of relatively new (1) natural-gas-fired boiler plants and (2) oil-fired combined-cycle units. The reference power plant contains two 500 MWe coal-fired units typical of current new installations. The two oxygen-blown coal gasification systems evaluated for each retrofit were the Texaco process and the Combustion Engineering process. Neither of these gasification processes has been demonstrated at the commercial scale used in this study. Each coal gasification system was treated as a completely separate, self-contained facility supplying medium-Btu fuel gas to an adjacent existing power plant. With coal priced at $1 per million Btu, busbar power costs ranged from 37.6 to 42.3 mills per kilowatt-hour for the retrofit plants and were 38.5 mills per kilowatt-hour for the reference coal-fired boiler plant. It is concluded that further study of these retrofit options is warranted. Actual implementation of any of the retrofit designs described in this study must await commercial demonstration of the particular coal gasification process.},
doi = {10.2172/5746062},
url = {https://www.osti.gov/biblio/5746062}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {10}
}