Abstract: Process to prepare simultaneously two or more base oil grades and middle distillates from a mineral crude derived feed, in particular a de-asphalted oil or a vacuum distillate feed or their mixtures, by performing the following steps: (a) hydrocracking the mineral crude derived feed, thereby obtaining an effluent; (b) distillation of the effluent as obtained in step (a) into one or more middle distillates and a full range residue boiling substantially above 340° C., (c) catalytically dewaxing the full range residue by contacting the residue with a dewaxing catalyst comprising a zeolite of the MTW type and a Group VIII metal, thereby obtaining a dewaxed oil; (d) isolating by means of distillation two or more base oil grades from the dewaxed oil obtained in step (c); and (e) isolating a dewaxed gas oil from the dewaxed-oil obtained in step (c); wherein the dewaxed oil as obtained in step (c) comprises between 10 and 40 wt % of a dewaxed heavy gas oil boiling for more than 70 wt % between 370 and 400° C.

Abstract: The invention provides a zeolite of the faujasite structure which has a unit cell size in the range of from 24.40 to 24.50 ?; a bulk silica to alumina ratio (SAR) in the range of from 5 to 10; and an alkali metal content of less than 0.15 wt %. Such zeolites have been found to have a very useful naphtha selectivity in hydrocracking, particularly a selectivity to heavy naphtha. A preparation process for the zeolite, hydrocracking catalyst composition comprising the zeolite and its use in hydrocracking are also provided.

Abstract: A process for desulphurising and dewaxing a hydrocarbon feedstock boiling in the gasoil boiling range to obtain a desulphurised and dewaxed gasoil fraction for use in an ultra low sulphur diesel fuel, comprising the following steps: (a) hydrodesulphurising the hydrocarbon feedstock boiling in the gasoil boiling range by contacting the feedstock in a hydrodesulphurisation reaction zone at elevated temperature and pressure, in the presence of hydrogen, with a hydrodesulphurisation catalyst and withdrawing a liquid hydrodesulphurisation effluent from the reaction zone; (b) catalytically dewaxing the liquid hydrodesulphurisation effluent to obtain a desulphurised and dewaxed gasoil fraction by contacting the liquid hydrodesulphurisation effluent, at elevated temperature and pressure in the presence of hydrogen, with a stacked bed of catalysts having a first upstream bed of noble metal containing hydrofinishing catalyst and a second downstream bed of noble metal containing dewaxing catalyst, wherein hydrogen and t

Abstract: The invention relates to a process to prepare a heavy and a light lubricating base oil from a partly isomerized Fischer-Tropsch derived feedstock, the feedstock having an initial boiling point of below 400° C. and a final boiling point of above 600° C. by (a) separating the fraction via distillation into a light base oil precursor fraction and a heavy base oil precursor fraction; (b) reducing the pour point of each separate base oil precursor fraction via dewaxing; and, (c) isolating the desired base oil products from the dewaxed oil fractions as obtained in step (b).

Abstract: The invention provides a shaped catalyst carrier which is an inorganic refractory oxide having a monomodal mercury pore volume distribution wherein at least 50% of the total pore volume is present in pores having a pore diameter in the range of from 4 to 50 nm, a catalyst incorporating said carrier and having a high metals content. The catalyst finds use in hydrocracking refinery feedstocks.

Abstract: A process to further upgrade a pre-processed used lubricating oil by: (a) contacting the partially upgraded used oil in the presence of hydrogen with a hydrodemetallization catalyst; (b) contacting the effluent of step (a) in the presence of hydrogen with a hydrotreating catalyst; (c) contacting the effluent of step (b) in the presence of hydrogen with a dewaxing catalyst; and (d) contacting the effluent of step (c) in the presence of hydrogen with a hydrotreating catalyst.