摘要:
The invention relates to a process for dimerizing lower, olefinic hydrocarbons. In particular, the present invention concerns a process for dimerizing C3-, C4 and C5-olefins with a medium pore zeolite under process conditions allowing selective dimerization. According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction system including at least one reaction zone and at least one separation zone. The olefinic hydrocarbon feedstock is contacted with an acid catalyst at conditions in which at least a part of the olefins dimerizes. The effluent from the reaction zone is conducted to the separation zone where dimerized reaction product is separated from said effluent.
摘要:
The present invention relates to a method for producing middle distillate fuel components from gasoline fuel component fractions by oligomerization of olefins. In this method a liquid blend composition feed comprising 0-90% by weight of C5, 5-95% by weight of C6, 0-30% by weight of C7 hydrocarbons containing olefins is fed into an oligomerization reactor. Optionally at least one oxygenate is used together with the feed. Said feed is oligomerized by contacting it with an ion exchange resin catalyst at a temperature from 30°C to 200°C and at a pressure from 500 to 2000 kPa. The un-reacted feed is separated by distillation. Optionally, the recovered distillate is hydrogenated for forming a product suitable for use as a middle distillate fuel component.
摘要:
A process for oligomerizing olefinic, lower hydrocarbons. The process comprises the steps of feeding a fresh olefinic hydrocarbon feedstock to a reaction zone; contacting the olefinic hydrocarbons of the feedstock with an acidic catalyst in the reaction zone in order to dimerize at least a part of the olefinic hydrocarbons, withdrawing an effluent containing oligomerized olefins from the reaction zone; and conducting the effluent to a separation zone, wherein the oligomerization reaction product is separated from said effluent. According to the invention, the reaction is carried out in homogeneous phase comprising a solvent for olefinic hydrocarbons, maintained at supercritical conditions. By using supercritical carbon dioxide as a solvent deactivation rate of catalyst can be diminshed. Carbon dioxide is easy to remove from the product mixture and spent reaction medium can be used for regeneration of the catalyst.
摘要:
The invention relates to a method for the regeneration of zeolite catalysts, in order to maintain a high and stable activity of the catalyst. In the method, the regeneration is performed in a CFB reactor system wherein a reaction involving hydrocarbons is performed, either with an inert regeneration gas at a temperature higher than the reaction temperature, or with an inert regeneration gas containing equal or less than 10 mol-% of oxygen at a temperature higher than the reaction temperature, or with air at a temperature below 490 °C, or with water vapour at a temperature higher than the reaction temperature. The invention relates also to a method for isomerization of olefins, isomerization of paraffins, dimerization, oligomerization and alkylation of hydrocarbons in a CFB reactor system.
摘要:
The invention relates to a noble metal catalyst for hydrocarbon conversion, to a method for the preparation thereof based on gas phase technique, to the use of the catalyst in reactions such as ring- opening, isomerisation, alkylation, hydrocarbon reforming, dry reforming, hydrogenation and dehydrogenation reactions, and to a method for the manufacture of middle distillates. Said noble metal catalyst comprises a group VIII metal selected from platinum, palladium, ruthenium, rhodium, iridium, or mixtures of combinations thereof on a support, and the catalyst activates carbon monoxide at a temperature below 323 K.
摘要:
The present invention relates to a process for producing polyolefms wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the pres- ence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unre- acted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogen- ated.
摘要:
The invention is related to catalytic materials and particularly to mesoporous molecular sieves embedded with a zeolite, which are thermally stable at a temperature of at least 900° C, and to a method for the preparation of the catalytic materials. Said catalytic materials are suitable for applications in the field of hydrocarbon processing.
摘要:
The invention relates to a noble metal catalyst for hydrocarbon conversion, to a method for the preparation thereof based on gas phase technique, to the use of the catalyst in reactions such as ring- opening, isomerisation, alkylation, hydrocarbon reforming, dry reforming, hydrogenation and dehydrogenation reactions, and to a method for the manufacture of middle distillates. Said noble metal catalyst comprises a group VIII metal selected from platinum, palladium, ruthenium, rhodium, iridium, or mixtures of combinations thereof on a support, and the catalyst activates carbon monoxide at a temperature below 323 K.