Fluidised-bed combustion: IEA Grimethorpe pressurized fluidised-bed test facility incident report - performance of the exhaust-gas heat exchangers
The report presents the findings of an investigation into the main heat exchanger performace and the modifications now being carried out on the Grimethorne pressurized fluidized-bed combustor. The heat exchanger was designed as part of the steam/wate circuit to cool the exhaust gas entering with a temperature in the range of 750 to 950/sup 0/C to approximately 300/sup 0/C at the outlet. During hot commissioning, it was noted that the gas outlet temperature from the heat exchanger was appreciably above design although the inlet temperature was substantially below design. An analysis of the calculated heat transfer coefficients derived from several hot commissioning runs for the tube banks within the exchanger, showed them to be more than 50% below the design values. Inspection of the exchanger revealed the tubes to be covered with dust deposits, which acted as insulation and accounted for the reduction in performance, apart from the difference in designand actual inlet conditions. The report provides a description of the heat exchanger in terms of its function and design. Operational aspects up to the completion of Test Series 1 are outlined, and details are given of the modifications taht are to be carried out prior to Test Series 2. A brief outline of the auxiliary heat exchanger and its performance is included.
- Research Organization:
- NCB (IEA Grimethorpe) Ltd., Grimethorpe (UK)
- DOE Contract Number:
- AC21-80MC14129
- OSTI ID:
- 6439720
- Report Number(s):
- DOE/MC/14129-1316; ON: DE83006560
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLUE GAS
HEAT RECOVERY
FLUIDIZED-BED COMBUSTORS
HEAT EXCHANGERS
DESIGN
PERFORMANCE
EXPERIMENTAL DATA
FOSSIL-FUEL POWER PLANTS
OPERATION
TEST FACILITIES
COMBUSTORS
DATA
ENERGY RECOVERY
GASEOUS WASTES
INFORMATION
NUMERICAL DATA
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RECOVERY
THERMAL POWER PLANTS
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200104* - Fossil-Fueled Power Plants- Components