An integrated system is provided for converting methanol or the like to heavy hydrocarbon products, especially distillate range hydrocarbons. In a first stage catalytic process oxygenate feedstock is converted to lower olefins. Byproduct aromatics are passed through a second stage oligomerization reactor with olefins. Distillate range hydrocarbons are recovered and hydrotreated to provide an improved fuel product.
Conversion System For Converting Oxygenates To Hydrocarbons
Aliphatic oxygenates are converted to high octane gasoline by an integrated reactor system wherein three reaction zones are utilized. In a first reaction zone the oxygenates are directly converted to gasoline and an isobutane by-product. In a second reaction zone oxygenates are dehydrated to an intermediate product comprising C. sub. 3 -C. sub. 4 olefins, which are then further reacted with the isobutane by-product in a third reaction zone to yield a gasoline alkylate. Ethylene-containing vapors may be separated from the second reaction zone and recycled to the first reaction zone for further processing.
Kenneth J. Del Rossi - Woodbury NJ Albin Huss - Chadds Ford PA Samuel A. Tabak - Wenonah NJ
Assignee:
Mobil Oil Corporation - Fairfax VA
International Classification:
B01J 3100
US Classification:
502162
Abstract:
The present invention relates to a novel alkylation catalyst complex and to alkylation processes employing such a catalyst complex. More specifically, the invention relates to a novel catalyst complex comprising a BF. sub. 3 :H. sub. 3 PO. sub. 4 adduct, and at least one polar hydrocarbon formed in situ. The catalyst complex may optionally include water as well as an added solubilizing agent. The invention further includes a pretreatment method for enhancing the isoparaffin selectivity of a catalyst complex containing a BF. sub. 3 :H. sub. 3 PO. sub. 4 adduct.
Process For Preparing Long Chain Alkyl Aromatic Compounds Employing Lewis Acid-Promoted Amorphous Inorganic Oxide
Albin Huss - Chadds Ford PA Quang N. Le - Cherry Hill NJ Samuel A. Tabak - Wenonah NJ Stephen S. Wong - Medford NJ
Assignee:
Mobil Oil Corp. - Fairfax VA
International Classification:
C07C 268 C07C 270
US Classification:
585456
Abstract:
Aromatic hydrocarbons are alkylated with relatively long chain alkylating agents, e. g. , C. sub. 8 + olefins, at mole ratio of aromatic to alkylating agent of not greater than about 5 in the presence of, as catalyst, a Lewis acid-promoted amorphous, porous inorganic oxide such as silica to provide long chain alkyl aromatic products which are useful, inter alia, as lubricating oil stocks.
Integration Of Paraffin Dehydrogenation With Mogd To Minimize Compression And Gas Plant Separation
James C. Kuo - Cherry Hill NJ Samuel A. Tabak - Wenonah NJ
Assignee:
Mobil Oil Corporation - New York NY
International Classification:
C07C 500 C07C 100
US Classification:
585330
Abstract:
Disclosed is a method and apparatus for producing gasoline and distillate grade products which employs integrating catalytic (or thermal) dehydrogenation of paraffins with MOGD to minimize interstage compression and gas plant separation cost. The process cascades the product from a low temperature propane or butane dehydrogenation zone into a first catalytic reactor zone which operates at low pressure and contains zeolite oligomerization catalysts, where the low molecular weight olefins are reacted to primarily gasoline range materials. These gasoline range materials can then be pressurized to the pressure required for reacting to distillate in a second catalytic reactor zone operating at high pressure and containing zeolite oligomerization catalyst. The first catalytic reactor zone also acts to remove the olefins from the dehydrogenation reactor effluent to allow recycle of the unreacted paraffins.
Two Stage System For Catalytic Conversion Of Olefins With Distillate And Gasoline Modes
An improved process for converting an olefinic feedstock containing ethene and C. sub. 3. sup. + alkenes to produce a heavy hydrocarbon product rich in distillate by contacting the feedstock with an oligomerization catalyst bed, at elevated pressure and temperature conditions in operating mode favorable to formation of heavy distillate product by selective conversion of C. sub. 3. sup. + alkenes. The improvement comprises providing a distillate mode effluent stream containing substantially unconverted ethene in vapor phase and condensed distillate, and recovering unconverted ethene-rich hydrocarbon vapor from the distillate mode effluent stream and further converting such to olefinic gasoline in a second oligomerization catalyst bed at reduced moderate pressure and elevated temperature conditions in operating mode favorable to formation of C. sub. 6. sup. + olefinic gasoline. At least a portion of the olefinic gasoline is recycled for conversion with the feedstock in the distillate mode catalyst bed.
A process for the selective oligomerization of linear and branched chain C. sub. 2 to C. sub. 12 olefins is provided. The process comprises contacting of the said olefin in the liquid phase with ZSM-12 at temperatures of 80. degree. F. to 400. degree. F.
Fritz A. Smith - New Hope PA Samuel A. Tabak - Wenonah NJ
Assignee:
Mobil Oil Corporation - New York NY
International Classification:
C07C 120 C07C 306
US Classification:
585533
Abstract:
A process for converting olefinic feedstock, such as synthol olefinic liquid product of Fischer-Tropsch synthesis, to distillate hydrocarbons comprising the steps of contacting the feedstock at elevated temperature and pressure with acid zeolite conversion catalyst to oligomerize olefins and convert oxygenated hydrocarbons contained in said light oil at temperatures up to 325. degree. C. and in the presence of H. sub. 2, thereby providing an effluent containing heavy distillate range hydrocarbon, light gas and byproduct water.
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