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Optimizing conditions, modifying design improve FCC regenerator

12/06/2010
G. SaiduluK.G. PalappanM.K. BhuyanV.K. SatheeshD. BhattacharyyaS. RajagopalIndian Oil Corp. Ltd.Haryana, IndiaA high-severity fluid catalytic cracking unit of 100,000 tonnes/year capacity has been in operation at the Guwahati refinery, one of the 10 refineries operated by Indian Oil Corp. Ltd., since its commissioning in 2003. While the design objectives could be achieved successfully, catalyst loss had been high. The best-achieved catalyst loss on a sustained basis was about 420 kg/day, which gradually increased to 650 kg/day.A systematic step-by-step method was followed to identify the cause of the problem. Deficiencies in design of hardware internals and suboptimal process conditions w...
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