Load turndown in a two-bed fluidized combustor
Conference
·
OSTI ID:6654398
The objective of this research is to investigate a new concept in fluidized bed design that improves load turndown capability. This design consists of a central combustion bed surrounded by an annular fluidized bed that establishes overall heat-transfer rate from the combustion bed. We have constructed a laboratory-scale version of this two-bed combustor and are testing its performance when burning three fuel forms of Illinois No. 5 coal: 3/8 inch {times} 8 mesh crushed coal, coal-water-limestone mixtures, and coal-limestone briquettes. In tests with crushed coal, we have achieved a load turndown of 12.3. These experimental results compare favorably with predictions of a computer model that simulates heat transfer in the combustor. 5 refs., 7 figs., 1 tab.
- Research Organization:
- Ames Lab., IA (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6654398
- Report Number(s):
- IS-M-650; CONF-890402--11; ON: DE90018022
- Country of Publication:
- United States
- Language:
- English
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