Use of coal gasification in compressed-air energy storage systems

Technical Report · Fri Sep 01 04:00:00 EDT 1989

OSTI ID:5617974

Nakhamkin, M ^[1]

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1. Energy Storage and Power Consultants, Mountainside, NJ (USA)

This report presents the results of a study conducted by Energy Storage and Power Consultants (ESPC) whose objective was to try to develop a cost effective Compressed Air Energy Storage (CAES) power plant concept integrated with the Texaco Coal Gasification System (TCGS). The capital cost of a coal gasification system is significantly higher than some other power plant systems and if operated at low capacity factors, the total cost of electricity would not be competitive. One of the main objectives of this study was to try to develop a concept which would provide continuous operation of the gasification system and, as a result, improve the plant economics through better utilization of its expensive components. Five CAES/TCGS concepts have been identified as the most promising, and were optimized using specifically developed computerized procedures. These concepts utilized various configurations of conventional reheat turbomachinery trains specifically developed for CAES application, the GE Frame 7F, Frame 7E and LM5000 gas turbine units as parts of the integrated CAES/TCGS plant concepts. The project resulted in development of integrated CAES/TCGS plant concepts which were optimized to provide TCGS capacity factors up to over 90%. Cursory economics for some of the integrated CAES/TCGS concepts are slightly better than those of a conventional integrated coal gasification-combined-cycle (IGCC) plant. 25 figs., 8 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Energy Storage and Power Consultants, Mountainside, NJ (USA)
• Sponsoring Organization: EPRI
• OSTI ID: 5617974
• Report Number(s): EPRI-GS-6491
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
25 ENERGY STORAGE
250200* -- Energy Storage-- Compressed & Liquified Gas
CAPITALIZED COST
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
COMPRESSED AIR ENERGY STORAGE
COMPRESSED AIR STORAGE POWER PLANTS
COST
DIAGRAMS
DOCUMENT TYPES
ENERGY BALANCE
ENERGY STORAGE
FLOWSHEETS
GASIFICATION
LOAD MANAGEMENT
MANAGEMENT
PEAKING POWER PLANTS
POWER PLANTS
PROGRESS REPORT
STEAM GENERATION
STORAGE
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC CYCLES