Calcium-based sorbent requirements for pressurized fluidized-bed combustion systems. Final report
Developing technology that utilizes pressurized, fluidized-bed combustion (PFBC) for electric power generation presents an extremely broad range of potential power cycle conditions (pressure ratio, turbine inlet temperature, excess air level, combined-cycle configuration) for developers to choose. These conditions should be selected on the basis of overall plant performance - plant energy conversion efficiency, reliability, availability, controllability, cost of electricity, and environmental performance (SO/sub x/, NO/sub x/, particulates, solid waste). The choice of cycle conditions should be made in parallel with the selection of combustor operating conditions (velocity, bed depth, coal feed size distribution, sorbent feed size distribution, and sorbent type) and design concept. Westinghouse is developing a methodology for making these selections. In this report attention focuses on the key area of sulfur removal. The relation of the above-mentioned parameters and the combustor sulfur removal performance is presented on the basis of a thermogravimetric (TG) balance technique used to characterize sorbent sulfation kinetics. Projections and data obtained in a 1000 hr test program conducted in the National Coal Board's 6 atm unit are compared. The sulfur removal performance of some potentially commercial cycles (boilers and adiabatic combustors) is projected over a pressure range of 5 to 20 atm, and criteria for selecting combustor operating conditions are developed.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
- OSTI ID:
- 5236353
- Report Number(s):
- EPRI-CS-3330; ON: DE84920170
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
FLUIDIZED-BED COMBUSTORS
ADSORBENTS
DESULFURIZATION
DOLOMITE
KINETICS
THERMAL GRAVIMETRIC ANALYSIS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMBUSTORS
GRAVIMETRIC ANALYSIS
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
THERMAL ANALYSIS
421000* - Engineering- Combustion Systems
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions