Combustion Engineering Integrated Gasification Combined Cycle (IGCC) Repowering Project -- Clean Coal II Project. Annual report, November 20, 1990--December 31, 1991
The IGCC system will consist of CE`s air-blown, entrained-flow, two-stage, pressurized coal gasifier; an advanced hot gas cleanup process; a combustion turbine adapted to use low-Btu coal gas; and all necessary coal handling equipment. The IGCC will include CE`s slogging, entrained-flow, gasifier operating in a pressurized mode and using air as the oxidant. The hot gas will be cleaned of particulate matter (char) which is recycled back to the gasifier. After particulate removal, the product gas will be cleaned of sulfur prior to burning in a gas turbine. The proposed project includes design and demonstration of two advanced hot gas cleanup processes for removal of sulfur from the product gas of the gasifier. The primary sulfur removal method features a newly developed moving-bed zinc ferrite system downstream of the gasifier. The process data from these pilot tests is expected to be sufficient for the design of a full-scale system to be used in the proposed demonstration. A second complementary process is in situ desulfurization achieved by adding limestone or dolomite directly to the coal feed. The benefit, should such an approach prove viable, is that the downstream cleanup system could be reduced in size. In this plant, the gasifier will be producing a low-Btu gas (LBG). The LBG will be used as fuel in a standard GE gas turbine to produce power. This gas turbine will have the capability to fire LBG and natural gas (for start-up). Since firing LBG uses less air than natural gas, the gas turbine air compressor will have extra capacity. This extra compressed air will be used to pressurize the gasifier and supply the air needed in the gasification process. The plant is made of three major blocks of equipment as shown in Figure 2. They are the fuel gas island which includes the gasifier and gas cleanup, gas turbine power block, and the steam turbine block which includes the steam turbine and the HRSG.
- Research Organization:
- ABB Combustion Engineering, Inc., Windsor, CT (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC21-91MC26308
- OSTI ID:
- 10188728
- Report Number(s):
- DOE/MC/26308-3466; ON: DE94000005; BR: AZ0401010
- Resource Relation:
- Other Information: PBD: Mar 1993
- Country of Publication:
- United States
- Language:
- English
Similar Records
CE IGCC repowering project: Bins and lockhoppers. Topical report, 1 January, 1992--28 February, 1993
IGCC repowering project clean coal II project public design report. Annual report, October 1992--September 1993
Related Subjects
01 COAL, LIGNITE, AND PEAT
COMBINED-CYCLE POWER PLANTS
COAL GASIFICATION
LOW BTU GAS
HOT GAS CLEANUP
AIR
STEAM
DESULFURIZATION
PARTICULATES
REMOVAL
ZINC COMPOUNDS
FERRITES
LIMESTONE
GAS TURBINES
STEAM TURBINES
DEMONSTRATION PROGRAMS
PROGRESS REPORT
200102
010404
POWER CYCLES
GASIFICATION