||Chemically active fluid-bed process for sulphur removal during gasification of heavy fuel oil : second phase /
Craig, J. W. T. ;
Johnes, G. L. ;
Moss, G. ;
Taylor, J. H. ;
Tisdall., D. E.
||Esso Research Centre, Abingdon (England).;National Environmental Research Center, Research Triangle Park, N.C. Control Systems Lab.
|| U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory, Control Systems Laboratory,
||PB-267 555; EPA/650-2-73-039; EPA-68-02-0300
Fuel oil ;
Air pollution control equipment ;
Fluidized bed processors ;
Heavy oils ;
Pilot plants ;
Performance evaluation ;
Field tests ;
Sulfur dioxide ;
Manufactured gas ;
Experimental design ;
Particle size ;
Calcium carbonates ;
Process charting ;
Chemically active fluidized bed process ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||vii, 204 pages : illustrations ; 28 cm.
The report describes the second phase of studies on the CAFB process for desulfurizing gasification of heavy fuel oil in a bed of hot lime. The first continuous pilot plant test with U.S. limestone BCR 1691 experienced local stone sintering and severe production of sticky dust during startup. Batch tests confirmed that BCR 1691 produced more dust than the purer Denbighshire or U.S. BCR 1359 stones. With BCR 1691, 10 times more dust was produced during kerosene combustion at 870C than during gasification/regeneration. The continuous pilot plant was modified to improve operability under dusty conditions: 332 gasification hours were spent in a second run with Denbighshire and BCR 1691 stones in six operating periods, the longest being 109 hours. Sulfur removal efficiency was comparable for the two stones, ranging from 60 to 95%. Regenerator performance was less satisfactory than in earlier tests. A poor sulfur material balance indicates need for improved analytical procedures. Total CAFB development through a large demonstration test will probably take about 6-7 years and require $3,320,000 in engineering effort.
"EPA/650-2-73-039." "November 1973." EPA contract no. 68-02-0300, ROAP no. ADD-BE, program element no. 1ABO13. EPA project officer: S.L. Rakes. See also EPA 650/2-74-109, Nov. 1974, PB-240 632.