KRW oxygen-blown gasification combined cycle: Carbon dioxide recovery, transport, and disposal

Technical Report · Thu Aug 01 00:00:00 EDT 1996

DOI:https://doi.org/10.2172/373835· OSTI ID:373835

Doctor, R D; Molburg, J C; Thimmapuram, P R

This project emphasizes CO{sub 2}-capture technologies combined with integrated gasification combined-cycle (IGCC) power systems. Complementary evaluations address CO{sub 2} transportation, CO{sub 2} use, and options for the long-term sequestration of unused CO{sub 2}. The intent is to provide the CO{sub 2} budget, or an equivalent CO{sub 2} budget, associated with each of the individual energy-cycle steps, in addition to process design capital and operating costs. The base case is a 458-MW (gross generation) IGCC system that uses an oxygen-blown Kellogg-Rust-Westinghouse agglomerating fluidized-bed gasifier, Illinois No. 6 bituminous coal feed, and low-pressure glycol sulfur removal followed by Claus/SCOT treatment to produce a saleable product. Mining, feed preparation, and conversion result in a net electric power production for the entire energy cycle of 411 MW, with a CO{sub 2} release rate of 0.801 kg/k Whe. For comparison, in two cases, the gasifier output was taken through water-gas shift and then to low-pressure glycol H{sub 2}S recovery, followed by either low-pressure glycol or membrane CO{sub 2} recovery and then by a combustion turbine being fed a high-hydrogen-content fuel. Two additional cases employed chilled methanol for H{sub 2}S recovery and a fuel cell as the topping cycle with no shift stages. From the IGCC plant, a 500-km pipeline took the CO{sub 2} to geological sequestering. In a comparison of air-blown and oxygen-blown CO{sub 2}-release base cases, the cost of electricity for the air-blown IGCC was 56.86 mills/kWh, and the cost of oxygen-blown IGCC was 58.29 mills/kWh.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 373835
• Report Number(s): ANL/ESD-34; ON: DE96014951; TRN: AHC29619%%18
• Resource Relation: Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
COMBINED-CYCLE POWER PLANTS
AIR POLLUTION CONTROL
CARBON DIOXIDE
MATERIALS RECOVERY
TRANSPORT
UNDERGROUND DISPOSAL
KRW GASIFICATION PROCESS
ECONOMIC ANALYSIS
DESULFURIZATION
FLUE GAS
NET ENERGY
HYDROGEN SULFIDES
COAL MINING
COAL PREPARATION
SORBENT INJECTION PROCESSES
MATERIALS HANDLING
COAL
LIMESTONE
FLOWSHEETS
COST ESTIMATION
NUMERICAL DATA