Fundamental modelling of pulverized coal and coal-water slurry combustion in a gas turbine combustor
- Avco Research Lab., Inc., 2385 Revere Beach Parkway, Everett, MA (US)
A large portion of world energy resources is in the form of low grade coal. There is need to utilize these resources in an efficient and environmentally clean way. The specific approach under development by us is direct combustion in a multistage slagging combustor, incorrporating control of NO/sub x/, SO/sub x/, and particulates. The toroidal vortex combustor is currently under development through a DOE contract to Westinghouse and subcontract to ARL. This subscale, coal-fired, 6MW combustor will be built and become operational in 1988. The coal fuel is mixed with preheated air, injected through a number of circumferentially-located jets oriented in the radius axis planes. The jets merge at the centerline, forming a vertically directed jet which curves around the combustor dome wall and gives rise to a toroidal shaped vortex. This vortex helps to push the particles radially outward, hit the walls through inertial separation and promote slagging. It also provides a high intensity flow mixing zone to enhance combustion product uniformity, and a primary mechanism for heat feed back to the incoming flow for flame stabilization. The paper describes the essential features of a coal combustion model which is incorporated into a three-dimensional, steady-state, two-phase, turbulent, reactive flow code. The code is a modified and advanced version of INTERN code originally developed at Imperial College which has gone through many stages of development and validation.
- OSTI ID:
- 6777841
- Report Number(s):
- CONF-8806136-
- Journal Information:
- Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States), Vol. 33:2; Conference: American Chemical Society Division of Fuel Chemistry meeting, Toronto, Canada, 5 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
COMBUSTION PROPERTIES
PYROLYSIS
COAL-FIRED GAS TURBINES
COMPUTER CODES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
PARTICULATES
THREE-DIMENSIONAL CALCULATIONS
COAL RANK
COMPUTER CALCULATIONS
ENERGY SOURCES
FUEL SLURRIES
GLOBAL ASPECTS
HEAT FLOW
MOISTURE
NITRIC OXIDE
PULVERIZED FUELS
SOLID FUELS
SULFUR DIOXIDE
TURBULENT FLOW
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
DECOMPOSITION
DISPERSIONS
FLUID FLOW
FOSSIL FUELS
FUELS
GAS TURBINES
MACHINERY
MATERIALS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
SLURRIES
SULFUR COMPOUNDS
SULFUR OXIDES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
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010900 - Coal
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010409 - Coal
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