Fluidized-bed combustion: report on the Leatherhead Link Test. NCB (IEA Grimethorpe) Ltd. Fluidized-Bed-Combustion Project, Grimethorpe Experimental Facility
This report describes the Test Programme conducted at the NCB Coal Utilization Research Laboratory, Leatherhead to provide scale-up data relevant to operation of the IEA pressurized fluidized bed combustor at Grimethorpe. Two tests were operated for an aggregate of about 170 hours. Most of the operating conditions (pressure, mean bed temperature, fluidizing velocity, excess air, Ca/S mol ratio) were kept constant, but the number of cooled circuits in the tube bank, and consequently the bed depth required, were varied over three levels. All the test programme objectives were realized. Data were obtained for materials balances, heat balances over different regions of the combustor, assessment of combustion efficiency, sulphur retention, gas composition, elutriation, heat transfer to cooling surfaces in and above the bed and bed behavior. A feature of the operating procedure proposed for Grimethorpe was evaluated. An important observation having an impact on tube bank design for Grimethorpe was the existence of a temperature gradient in the bed. Two items of prototype research instrumentation proposed for use at Grimethorpe were successfully tested. To obtain further scale-up data, an extensive programme of frequency response studies aimed at establishing dynamic characteristics of the combustor was conducted.
- Research Organization:
- National Coal Board, Leatherhead (UK). Coal Utilization Research Lab.
- OSTI ID:
- 6006603
- Report Number(s):
- DOE/METC-83-63; ON: DE83011561
- 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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