PROCESS AND DEVICE FOR TREATING CATALYST DISCHARGED FROM BUBBLING BED HYDROGENATION OF RESIDUAL OIL

摘要

The invention relates to a process and a device for treating a catalystdischarged from bubblingbed hydrogenation of residual oil. Provided is a process for treating acatalyst discharged frombubbling bed hydrogenation of residual oil, comprising the following steps:(1) adjustment andcontrol to reduce the viscosity, wherein the catalyst dischargedintermittently from a bubblingbed hydrogenation reactor for the residual oil is adjusted for storage andthen dischargedcontinuously, subjected to temperature adjustment by adding water, such thatthe viscosity of theoil adsorbed on the surfaces and inside the pores of the discharged catalystparticles is reduced,and the flowability of the adsorbed oil on the surfaces and inside the poresof the dischargedcatalyst particles is improved; (2) desorption and separation by rotationalflow, wherein theadsorbed oil is desorbed and separated from the surfaces and inner pores ofthe dischargedcatalyst particles by a flowing shear force in a rotational flow field; and(3) separation andresource utilization of the three phase oil-water-catalyst, wherein theoil/water/catalyst mixtureproduced from the desorption and separation by rotational flow is subjected tothree-phaseseparation, achieving recovery of the oil, recycling of the water obtained byseparation, and fullrecovery of the solid particles obtained by separation. Also provided is adevice for treating acatalyst discharged from bubbling bed hydrogenation of residual oil.