Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

KN-3PROBLEMS AND PROSPECTS FOR IMROVEMENTOF THE OIL-REFINING REACTOR DESIGNV.M. KapustinOAO VNIPIneft;Gubkin Russian State Oil & Gas University,The key strategic tasks facing the Russian oil-refining sector are increasing the oilconversion level and shifting to the European quality petroleum products.The report has considered main problems and prospects of the improvement of the reactordesign for the most important secondary oil-refining processes, including catalytic cracking,catalytic reforming, hydrotreating and hydrocracking.The evolution of catalytic cracking reactor design due to shifting from a bead catalyst to amicrospheroidal catalyst was discussed. Design features of moving-bed reactors with processbeads, microspheroidal catalyst boiling-bed reactors, reactors with a riser and short-timecontact reactors were considered.Main advantages and shortcomings of moving-bed reactors with large-sized catalystgranules, microspheroidal catalyst fluidized-bed reactors and riser reactors with catalystpowder were reviewed.The most important structural elements of the reactor for a new VGO catalytic crackingcomplex of OAO TAIF-NK built in Nizhnekamsk on the basis of Russian technologydeveloped by RAS Institute of Petrochemical Synthesis (INKhS), OAO VNII NP and OAOVNIPIneft were discussed. It was demonstrated that application of a number of new designsolutions permitted to achieve high performance being competitive in the world market.Modification of the catalytic reforming reactor design in going from fixed-bed units tomoving-bed units was considered. Features of reactors with an axial gas mixture inlet, withmovement along a central pipe downwards and a radial outside-in inlet were discussed.The operation experience of hydrocracking units built in Russia on the basis of bothdomestic and foreign processes was generalized. Features of fixed-bed and boiling-bedreactors operated in process units at Ufa, Omsk, Perm, Yaroslavl, and Ryazan plants wereanalyzed.Main lines of the reactor design improvement for operating oil-refining units wereindicated.Prospects of the construction of new up-to-date catalytic cracking, reforming,hydrotreating and hydrocracking units were considered.20