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20-atmosphere rig PFBC test results: Tests 10 and 12. Investigations into the use of limestone as a sorbent

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Tests have been carried out in a 1 ft x 1 ft pressurized fluidized-bed combustor with the objective of assessing the use of limestone as the SO/sub 2/ sorbent. Operating conditions ranged from 10 to 16 atm pressure; 3 to 4 ft/s fluidizing velocity and 1320/sup 0/F to 1560/sup 0/F bed temperature. Two limestone's of different reactivity were used. Both were inferior in terms of sulphur capture when compared with data obtained using Plum Run dolomite, and one limestone was markedly inferior to the other. The coals were Pittsburgh No. 8 and a high-ash subbituminous coal. Serious sintering of bed material was experienced when burning the Pittsburgh No. 8 coal with limestone as the sorbent. Particles became bonded together to form larger particles until defluidisation occurred at some conditions. This phenomenon had not been observed previously with dolomite as the sorbent, nor was it observed when burning the sub-bituminous coal which had an ash with high fusion temperature characteristics.


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Citation Not Available
Is NETL associated Yes
NETL Point of Contact Roy Long
NETL Point of Contact's Email Roy.long@netl.doe.gov
NETL program or project KMD
Publication Date 8/1/1983