摘要:
A method of upgrading refining streams with high polynucleararomatic hydrocarbon (PNA) concentrations can include: hydrocracking a PNA feed in the presence of a catalyst and hydrogen at 380° C. to 430° C., 2500 psig or greater, and 0.1 hr−1 to 5 hr−1 liquid hourly space velocity (LSHV), wherein the weight ratio of PNA feed to hydrogen is 30:1 to 10:1, wherein the PNA feed comprises 25 wt % or less of hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 50 wt % or greater to form a product comprising 50 wt % or greater of the hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 20 wt % or less.
摘要:
Exemplary embodiments of the present invention relate to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride containing catalyst comprising a surface, and a Group VI/Group VIII metal sulfide coated onto the surface of the interstitial metal hydride. The catalysts and processes of the present invention can improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.
摘要:
The invention provides distillate fuel blend components with improved seal swell and lubricity properties obtained from Fischer Tropsch products. The blends contain a highly paraffinic distillate fuel component and distillate-boiling alkylcycloparaffins and/or distillate-boiling alkylaromatics. The invention further provides processes for obtaining such blends using the products of Fischer Tropsch processes. Finally, the invention provides methods for improving seal swell and lubricity properties for distillate fuels.
摘要:
A catalyst for use in a process for steam conversion of a heavy hydrocarbon feedstock includes the steps of: providing a heavy hydrocarbon feedstock; providing a catalytically active phase comprising a first metal and a second metal wherein said first metal is a non-noble Group VIII metal and said second metal is an alkali metal; and contacting said feedstock with steam at a pressure of less than or equal to about 300 psig in the presence of said catalytically active phase so as to provide a hydrocarbon product having a reduced boiling point. The catalyst may be supported on a support material or mixed directly with the feedstock and comprises a first metal selected from the group consisting of non-noble Group VIII metals and mixtures thereof and a second metal comprising an alkali metal wherein said catalyst is active to convert said heavy hydrocarbon at a pressure of less than or equal to about 300 psig.
摘要:
A novel trimetallic catalytic composite, a method of manufacture and process use thereof is disclosed. The composite comprises a refractory support having a nominal diameter of at least 650 microns and having deposited thereon a uniformly dispersed platinum component, a uniformly dispersed tin component and a surface-impregnated metal component selected from the group consisting of rhodium, ruthenium, cobalt, nickel, iridium and mixtures thereof. When this catalytic composite is used in the reforming of hydrocarbons at low pressures significant improvements in activity stability is observed compared to catalysts of the prior art.
摘要:
A ruthenium-containing catalyst is regenerated after use for an organic chemical treatment, e.g., hydrogenation, dehydrogenation, isomerization, disproportionation, hydrocracking, etc., at an elevated temperature and at a considerably reduced pressure of the order of about 600 mm Hg and much lower of the order of about 0.001 mm Hg.
摘要:
A process for the hydrogenation of unsaturated hydrocarbon fractions is described which comprises dissolving said unsaturated hydrocarbon fraction in a liquid acid system, said liquid acid system being selected from the group consisting of liquid HF, other liquid Bronsted acid containing fluorine, fluorine containing Friedel-Crafts catalyst (such as BF.sub.3, TaF.sub.5) in liquid HF or other liquid fluorine containing Bronsted acid and contacting the resulting solution with a catalyst selected from the group consisting of the elemental oxide and sulfide forms of platinum and iridium and the elemental and oxide forms of palladium promoted with a liquid acid system said liquid acid system being selected from the group consisting of liquid fluorine containing Bronsted acid and fluorine containing Friedel-Crafts catalyst in liquid fluorine containing Bronsted acid in a pressurized hydrogen atmosphere at a temperature sufficient to facilitate the reaction and avoid hydrocracking.Hydrogenation using a liquid fluorine containing Bronsted acid promoted palladium system as catalyst has been found to be from 10 to 144 times more active than palladium by itself. Hydrogenation using palladium promoted by using a Friedel-Crafts catalyst containing fluorine in conjunction with a liquid fluorine containing Bronsted acid demonstrates an activity increase on the order of 3500 times. Using platinum or iridium promoted as described above results in a hydrogenation process which is tolerant to sulfur and therefore one highly attractive when dealing with heavy ends, resid, coal liquids or other high sulfur, difficult to process hydrocarbon feedstreams.In the practice of the instant process, the liquid acid promoted platinum, palladium and iridium catalyst material may be supported on any material resistant to acid, carbon, charcoal, Teflon, (polytetrafluoroethylene) etc., meeting this requirement.
摘要:
A method of catalyst manufacture. A calcined tin-containing refractory inorganic oxide support or carrier material is impregnated with an acidic solution of a precursor compound of a platinum group metal and a precursor compound of an iron group metal. The impregnated carrier material is dried over an extended period to reduce the volatile content thereof to less than about 15 wt. % prior to high temperature calcination. Drying the impregnated carrier material in accordance with the present invention provides a catalyst substantially improved in activity stability.
摘要:
Desulfurization of a sulfurous hydrocarbon distillate containing mono-olefinic hydrocarbons and aromatics is carried out by reacting the distillate with hydrogen in contact with a catalyst composite of a carrier, a platinum or palladium component, a rhodium component and a tin component. The carrier may be alumina, alumina-boria, silica-alumina, chromia-alumina, alumina-silica-boron phosphate or crystalline aluminosilicate.
摘要:
Improved distribution of the tin component of a hydrocarbon conversion catalyst also containing a Group VIII noble metal and halogen on a carrier is obtained by impregnation of the carrier with a solution of an acid amide or derivatives thereof and a soluble tin compound.