Texaco-based gasification-combined-cycle system performance studies. Final report

Technical Report · Sun Jun 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5232485· OSTI ID:5232485

Oliva, J. J.; Shemo, S. D.

This report presents the results of an investigation of the effects on system thermal efficiency of major design variables and configuration options in combined cycle power plants based on air or oxygen-blown Texaco gasifiers. The plants are sized to process 10,000 tons per day of Illinois No. 6 coal. Design parameters considered were: steam cycle steam conditions; gasification system pressure, oxidant temperature and composition; coal/water slurry ratio and temperature; ambient temperature; and fuel temperature. Configuration options considered were: the quantity of raw gas cooler by-pass flow; recirculation of cold gas to temper the raw gas product before entering the raw gas cooler; clean gas resaturation; use of a clean gas expander; plant size; use of steam turbines or electric motors for oxygen plant compressors; supplementary firing of the heat recovery steam generator. The system performance estimates and sensitivity studies have been conducted for integrated gasification-combined cycle systems. Cycles using combustion turbines firing at 1985/sup 0/F (present technology), 2100/sup 0/F (next generation) and 2600/sup 0/F and 3000/sup 0/F (advanced are presented. Based on 1978 New Source Performance Standards, it is concluded that present technology combustion turbines and steam cycle components; the Texaco gasifier/raw gas cooler/ and present technology gas cleanup components can be configured into either integrated or non-integrated power plants which are competitive with present day large coal-fired steam plants which utilize present technology for control of SO/sub 2/, NO/sub x/, fly ash, and emissions to water and land. More stringent environmental control standards that now exist or might exist in the future, together with advances in combustion turbines, gasifiers, and raw gas cleanup technology will enhance this competitiveness.

• Research Organization: General Electric Co., Schenectady, NY (USA)
• OSTI ID: 5232485
• Report Number(s): EPRI-AP-1429
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200102 -- Fossil-Fueled Power Plants-- Power Cycles
AIR
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
DATA
DATA FORMS
DESIGN
EFFICIENCY
ELECTRIC MOTORS
ELEMENTS
ENGINEERING
FLUIDS
GAS TURBINES
GASES
GASIFICATION
GRAPHS
INFORMATION
MACHINERY
MOTORS
NONMETALS
NUMERICAL DATA
OXYGEN
POWER PLANTS
STEAM TURBINES
TABLES
TEXACO GASIFICATION PROCESS
THERMAL EFFICIENCY
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY