摘要:
L'invention concerne un procédé de synthèse d'hydrocarbures essentiellement linéaires et saturés C 5+ à partir de gaz de synthèse, la phase gazeuse réactive circulant soit dans le sens descendant, soit dans le sens ascendant à travers une zone de réaction qui comprend un lit fixe de catalyseur, ledit procédé étant caractérisé en ce qu'il comprend la circulation ascendante à travers ladite zone d'une phase liquide inerte, avec une vitesse superficielle supérieure à 0,01 cm/s.
摘要:
Hydrocarbons are prepared by a process in which a feed comprising methanol is contacted at elevated temperature and pressure with a catalyst comprising: (i) a porous carrier material selected from the group comprising silica, alumina, and mixtures thereof; (ii) cobalt as a metal component deposited on the porous carrier; and (iii) a promoter selected from the group comprising zirconium, titanium, chromium, ruthenium, iron, magnesium, zinc, thorium and uranium. The feed may further comprise hydrogen or synthesis gas. In cases where the feed comprises both methanol and synthesis gas, methanol in the feed may be prepared from synthesis gas remaining after contact with the aforementioned catalyst.
摘要:
A process for reducing methane formation and increasing liquid yields in Fischer-Tropsch processes for synthesizing hydrocarbons from CO and H₂ comprising adding water and/or an olefin to the top of the reactor bed or to the reactor feed at a point below 10% of the distance from the top to the bottom of the reactor bed and above a point 10% above the bottom of the reactor bed to the top of the reactor bed in an amount sufficient to reduce said methane formation, wherein the molar ratio of water (when employed) to CO is from about 0.1 to about 5.
摘要:
A process for the preparation of hydrocarbons by catalytic reaction of carbon monoxide with hydrogen wherein the feed is contacted at elevated temperature and pressure with a catalyst comprising 3-60 pbw cobalt, 0.1-100 pbw zirconium, titanium, chromium and/or ruthenium per 100 pbw of carrier, which catalyst is in the form of a fixed bed and has an external surface area S E and wherein together with the feed a hydrocarbon-containing liquid boiling above 100 °C is passed through the catalyst in a downward direction at such a superficial liquid flow velocity V s at the inlet of the bed that the product V s x S E is larger than 1.
摘要:
A process for reducing the carbon oxide content in natural gas, by producing a carbon oxide containing natural gas from a geological formation through a natural gas delivery system; providing a reaction zone containing at least one catalyst suitable for hydrocarbon conversion in the natural gas delivery system; introducing hydrogen into the carbon oxide containing natural gas to form a reaction mixture; and passing the reaction mixture to the catalyst in the reaction zone to convert at least a portion of the carbon oxides in the natural gas to hydrocarbons.
摘要:
A method of conducting a continuous multi-phase catalytic reaction such as the conversion of syngas to higher hydrocarbon fuels. Gaseous reactants are introduced via a gas permeable plate into a slurry which includes the product and a finely divided catalyst. The liquid product is separated from the remainder of the slurry by means of a filter unit including a filter member. A pressure differential is established across the filter member by means of a constant level device within the filter unit which maintains a level of filtrate within the filter unit below the level of the slurry. The slurry is maintained in a constant state of agitation by the introduction of the gaseous components as a steam of bubbles. Fluctuations in the pressure differential across the filter member prevent the filter member from clogging, and the gas space is above the filtrate and the slurry are in communication.
摘要:
A method of conducting a continuous multi-phase catalytic reaction such as the conversion of syngas to higher hydrocarbon fuels. Gaseous reactants are introduced via a gas permeable plate into a slurry which includes the product and a finely divided catalyst. The liquid product is separated from the remainder of the slurry by means of a filter unit including a filter member. A pressure differential is established across the filter member by means of a constant level device within the filter unit which maintains a level of filtrate within the filter unit below the level of the slurry. The slurry is maintained in a constant state of agitation by the introduction of the gaseous components as a steam of bubbles. Fluctuations in the pressure differential across the filter member prevent the filter member from clogging, and the gas space is above the filtrate and the slurry are in communication.