Abstract
The study is devoted to the tests of hierarchical meso-macroporous catalysts for three-stage atmospheric and vacuum residues hydroprocessing. A special attention is paid to properties of fresh and spent catalysts, the results of experiments on the selection of the optimal parameters (T, p and LHSV) for the three-stage hydroprocessing of residues, as well as the properties of petroleum products produced under optimal conditions. Catalysts were characterized with XRD, nitrogen adsorption–desorption, Hg-intrusion, SRXRF, TPD-NH3 and SEM. The proposed technology of the hydroprocessing of residues over the catalysts with hierarchical porosity makes it possible to obtain valuable oil products and MARPOL marine fuel, which meets modern technical and environmental requirements. Based on the laboratory experiments, a pilot setup for three-stage hydroprocessing of residues has been developed, and is tested at the moment.
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