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Title: Supercritical steam pressure topping PCFB combustion plant

Abstract

The circulating fluidized bed combustor has demonstrated its ability to burn a variety of coals with both high combustion efficiency and reduced emissions. If the combustion process is made to occur at elevated pressure--pressurized circulating fluidized bed (PCFB) combustion--additional benefits can be accrued; the hot combustion exhaust gas from the PCFB can be used to drive a gas turbine, thus forming a gas turbine-steam turbine combined cycle power plant. Ash fusion/agglomeration phenomena limit the combusting fluidized bed and hence downstream gas turbine inlet temperature to approximately 1,600 F; the Electric Power Research Institute 1993 Technical Assessment Guidelines indicate a 39 to 40% efficiency (coal higher heating value basis) for this type of plant. Named a Second-Generation or Topping PCFB Combustion Plant, it adds coal carbonization/partial gasification and topping combustion to the plant. The coal carbonizer produces a low Btu fuel gas that is burned in a topping combustor with the heat release being used to heat the PCFV flue gas to state-of-the-art gas turbine inlet temperatures; char produced in the carbonizer is burned in the PCFB. When operated with a 2,350 F topping combustor and a conventional 2400 psig/1,000 F/1,000 F/2{1/2} in. Hg steam cycle; the efficiency gain provided themore » more advanced steam discusses cycle and the development status of the plant in detail.« less

Authors:
;
Publication Date:
Research Org.:
Foster Wheeler Development Corp. (US)
Sponsoring Org.:
USDOE
OSTI Identifier:
20050963
Report Number(s):
CONF-971214-
TRN: IM200026%%34
DOE Contract Number:  
AC21-86MC21023
Resource Type:
Conference
Resource Relation:
Conference: 10th International Conference and Exhibition for the Power Generating Industries, Dallas, TX (US), 12/09/1997--12/11/1997; Other Information: PBD: [1998]; Related Information: In: Power-Gen '97 International, [2000] pages.
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; PULVERIZED FUELS; COAL; FOSSIL-FUEL POWER PLANTS; FLUIDIZED BED BOILERS; CIRCULATING SYSTEMS; COAL-FIRED GAS TURBINES; COAL GASIFICATION; CHARS; COCOMBUSTION

Citation Formats

Robertson, A., and White, J. Supercritical steam pressure topping PCFB combustion plant. United States: N. p., 1998. Web.
Robertson, A., & White, J. Supercritical steam pressure topping PCFB combustion plant. United States.
Robertson, A., and White, J. Wed . "Supercritical steam pressure topping PCFB combustion plant". United States.
@article{osti_20050963,
title = {Supercritical steam pressure topping PCFB combustion plant},
author = {Robertson, A. and White, J.},
abstractNote = {The circulating fluidized bed combustor has demonstrated its ability to burn a variety of coals with both high combustion efficiency and reduced emissions. If the combustion process is made to occur at elevated pressure--pressurized circulating fluidized bed (PCFB) combustion--additional benefits can be accrued; the hot combustion exhaust gas from the PCFB can be used to drive a gas turbine, thus forming a gas turbine-steam turbine combined cycle power plant. Ash fusion/agglomeration phenomena limit the combusting fluidized bed and hence downstream gas turbine inlet temperature to approximately 1,600 F; the Electric Power Research Institute 1993 Technical Assessment Guidelines indicate a 39 to 40% efficiency (coal higher heating value basis) for this type of plant. Named a Second-Generation or Topping PCFB Combustion Plant, it adds coal carbonization/partial gasification and topping combustion to the plant. The coal carbonizer produces a low Btu fuel gas that is burned in a topping combustor with the heat release being used to heat the PCFV flue gas to state-of-the-art gas turbine inlet temperatures; char produced in the carbonizer is burned in the PCFB. When operated with a 2,350 F topping combustor and a conventional 2400 psig/1,000 F/1,000 F/2{1/2} in. Hg steam cycle; the efficiency gain provided the more advanced steam discusses cycle and the development status of the plant in detail.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {7}
}

Conference:
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