摘要:
Provided is a process for catalytically reforming a hydrocarbon feedstock using a highly sulfur sensivite catalyst. The process comprises contacting the hydrocarbon in a reaction zone, with the hydrocarbon feed and catalyst flowing in opposite directions. Once the catalyst has passed through the reaction zone, it is then passed to a regeneration zone for regeneration. The process eliminates the need of passing the hydrocarbon feed through a sulfur sorber prior to entry into the reaction zone, as the spent catalyst which is leaving the reaction zone for regeneration acts as a sulfur sorber and removes the sulfur from the feed entering the reaction zone.
摘要:
La présente invention concerne de nouveaux catalyseurs d'hydrotraitement d'hydrocarbures, leur préparation et leur application. Le catalyseur d'hydrotraitement d'hydrocarbures, selon la présente invention, se caractérise en ce qu'il comporte un support minéral réfractaire combiné à une phase active comprenant d'une part une couche d'oxyde d'uranium et d'autre part au moins un oxyde d'un métal du groupe VIII, et en ce que ladite phase active comprend une couche d'oxyde d'uranium fixée avec une répartition homogène sur ledit support par l'intermédiaire de liaisons directes -0- résultant d'une imprégnation du support à l'aide d'une solution éthanolique d'acétylacétonate d'uranyle.
摘要:
Process for the catalytic hydrodesulphurization of a hydrocarbon oil fraction by contacting it in the presence of hydrogen with a catalyst which contains platinum whiskers. Method and apparatus for the determination of the sulphur content of a hydrocarbon oil fraction by hydrodesulphurization with a catalyst which contains platinum whiskers, and measuring the amount of hydrogen sulphide formed.
摘要:
Methods are provided for dewaxing a distillate fuel boiling range feed to improve one or more cold flow properties of the distillate fuel feed, such as cloud point, where the distillate fuel feed is fractionated to produce both a jet fuel product and an arctic diesel fuel product. The decrease of cloud point is achieved by using a feedstock having a concentration of nitrogen of less than about 50 wppm and a concentration of sulfur of less than about 15 wppm. Further, the dewaxing catalyst may have a reduced content of hydrogenation metals, such as a content of Pt or Pd of from about 0.05 wt % to about 0.35 wt %. A distillate fuel feed can be dewaxed to achieve a desired cloud point differential using a reduced metals content dewaxing catalyst under the same or similar conditions to those required for a dewaxing catalyst with higher metals content.
摘要:
The invention relates to a process for the manufacture of diesel range hydrocarbons wherein a feed is hydrotreated in a hydrotreating step and isomerised in an isomerisation step, and a feed comprising fresh feed containing more than 5 wt% of free fatty acids and at least one diluting agent is hydrotreated at a reaction temperature of 200 - 400 °C, in a hydrotreating reactor in the presence of catalyst, and the ratio of the diluting agent/fresh feed is 5 - 30:1.
摘要:
Multiple catalytic processing stations couple with a system which produces volatile gas streams from biomass decomposition at discrete increasing temperatures. These catalytic processing stations can be programmed to maximize conversion of biomass to useful renewable fuel components based on input feedstock and desired outputs. The present invention relates generally to systems for making renewable fuels, and more particularly to the thermal chemical conversion of biomass to renewable fuels and other useful chemical compounds, including gasoline and diesel, via a series of catalysts using a programmable system.
摘要:
The invention relates to a method for optimizing layered catalytic processes. This is accomplished by testing various catalysts with a compound found in a feedstock to be tested, to determine the facility of the catalyst in hydrogenating, hydrosulfurizing, or hydrodenitrogenating the molecule, and hence the feedstock. In a preferred embodiment, the Double Bond Equivalence of the feedstock and molecule are determined, and catalysts are pre-selected based upon their known ability to work with materials of this DBE value.