Environmental footprints and costs of coal-based integrated gasification combined cycle and pulverized coal technologies

Technical Report · Sat Jul 15 00:00:00 EDT 2006

OSTI ID:20790854

The report presents the results of a study to establish the environmental footprint and costs of the coal-based integrated gasification combined cycle (IGCC) technology relative to the conventional pulverized coal (PC) technologies. The technology options evaluated are restricted to those that are projected by the authors to be commercially applied by 2010. The IGCC plant configurations include coal slurry-based and dry coal-based, oxygen-blown gasifiers. The PC plant configurations include subcritical, supercritical, and ultra-supercritical boiler designs. All study evaluations are based on the use of three different coals: bituminous, sub-bituminous, and lignite. The same electric generating capacity of 500 MW is used for each plant configuration. State-of-the-art environmental controls are also included as part of the design of each plant. The environmental comparisons of IGCC and PC plants are based on thermal performance, emissions of criteria and non-criteria air pollutants, solid waste generation rates, and water consumption and wastewater discharge rates associated with each plant. The IGCC plants in these comparisons include NOX and SO{sub 2} controls considered viable for 2010 deployment. In addition, the potential for use of other advanced controls, specifically the selective catalytic reduction system for NOX reduction and the ultra-efficient Selexol and Rectisol systems for SO{sub 2} reduction, is also investigated. The cost estimates presented in the report include capital and operating costs for each IGCC and PC plant configuration. Cost impacts of using the advanced NOx and SO{sub 2} controls are included. The report provides an assessment of the CO{sub 2} capture and sequestration potential for the IGCC and PC plants. A review of the technical and economic aspects of CO{sub 2} capture technologies is included. 20 refs., 75 figs., 3 apps.

• Research Organization: Nexant, Inc., San Francisco, CA (United States); U.S. Environmental Protection Agency, Washington, DC (United States). Office of Air and Resources
• OSTI ID: 20790854
• Report Number(s): EPA-430-R-06-006; EPA Contract No. 68-W-03-33; TRN: 001100233
• Resource Relation: Other Information: IEACR LIB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
ENVIRONMENTAL IMPACTS
COST
COAL
COMBINED-CYCLE POWER PLANTS
COAL GASIFICATION
PULVERIZED FUELS
COMPARATIVE EVALUATIONS
BITUMINOUS COAL
SUBBITUMINOUS COAL
LIGNITE
THERMAL EFFICIENCY
EMISSION
WATER USE
NITROGEN OXIDES
SULFUR DIOXIDE
POLLUTION CONTROL EQUIPMENT
SELECTIVE CATALYTIC REDUCTION
COST ESTIMATION
CARBON DIOXIDE
CARBON SEQUESTRATION
CAPTURE
TECHNOLOGY ASSESSMENT
INVESTMENT
CAPITALIZED COST
GAS GENERATORS
ECONOMIC ANALYSIS