Fluidized-Bed Gas-Turbine Experimental Unit for MIUS Applications. Quarterly Progress Report, January 1, 1976--March 31, 1976

摘要

Prime priority was given to the preparation of bid packages for procurement of long-lead-time items. The Request for Directive was approved by the Oak Ridge Operations office of ERDA conditioned on the availability of funds. The AiResearch study under subcontract strongly favors closed-cycle vs. open-cycle operation in a MIUS system and indicates that their existing 831-200 engine can be modified for use in a closed-cycle system, the main change required being in the shaft oil seal. Coal-dispersion rates were measured in the 4-ft (1.3 m) square cold-flow test facility. The coal dispersion rate was poor for incipient fluidization of the bed, but was satisfactory at the minimum-design air flow rate and still better at higher air flows. Bench tests of the coal metering and feed equipment indicate that the vibratory feed system can be adjusted to give good division of the coal feed into four nearly equal streams at any given coal feed rate but that wide variations in the flow rates of the four streams develop as the coal feed rate is changed. The flow divider device, on the other hand, splits the coal feed into four streams with a flow rate for each which is within less than +-5 percent of the mean for the entire coal flow rate of interest. This excellent performance is repeatable day after day. Endurance tests of the system have been initiated. (ERA citation 03:018638)