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Topping PCFB combustion plant with supercritical steam pressure

Conference ·
OSTI ID:634139
 [1];  [2]
  1. Foster Wheeler Development Corp., Livingston, NJ (United States)
  2. Parsons Power Group Inc., Reading, PA (United States)
+ Show Author Affiliations
Research is being conducted to develop a new type of coal fired plant for electric power generation. This new type of plant, called a second generation or topping pressurized circulating fluidized bed combustion (topping PCFB) plant, offers the promise of efficiencies greater than 46 percent (HHV), with both emissions and a cost of electricity that are significantly lower than conventional pulverized coal fired plants with scrubbers. The topping PCFB plant incorporates the partial gasification of coal in a carbonizer, the combustion of carbonizer char in a pressurized circulating fluidized bed combustor (PCFB), and the combustion of carbonizer fuel gas in a topping combustor to achieve gas turbine inlet temperatures of 2,300 F and higher. After completing pilot plant tests of a carbonizer, a PCFB, and a gas turbine topping combustor, all being developed for this new plant, the authors calculated a higher heating value efficiency of 46.2 percent for the plant. In that analysis, the plant operated with a conventional 2,400 psig steam cycle with 1,000 F superheat and reheat steam and a 2.5 inch mercury condenser back pressure. This paper identifies the efficiency gains that this plant will achieve by using supercritical pressure steam conditions.
Research Organization:
Foster Wheeler Development Corp., Livingston, NJ (United States)
Sponsoring Organization:
USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
DOE Contract Number:
AC21-86MC21023
OSTI ID:
634139
Report Number(s):
DOE/FETC/C--98/7288; CONF-971214--; ON: DE98051176
Country of Publication:
United States
Language:
English

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Related Subjects

20 FOSSIL-FUELED POWER PLANTS
CIRCULATING SYSTEMS
COAL GASIFICATION
COAL-FIRED GAS TURBINES
COMBINED-CYCLE POWER PLANTS
ENERGY EFFICIENCY
FLUIDIZED BED BOILERS
PRESSURIZATION