Abstract:
A combination process for the production of an unleaded, narrow boiling range, high octane motor fuel which involves (1) a novel form of low-severity hydrocracking followed by (2) catalytic reforming. The process is effected without the intermediate separation of the product effluent from the low-severity hydrocracking zone, and, therefore, provides a true ''''in-line'''' hydrocracking/reforming combination process.
Abstract:
The viscosity index of a lubricating oil is improved by contacting the oil at elevated temperature and pressure with a catalyst having hydrogenation activity in the presence of hydrogen and in the presence of carbon monoxide.
Abstract:
A CATALYTIC HYDROCRACKING PROCESS FOR PRODUCING HIGH VISCOSITY INDEX LUBRICATING OILS BY CONTACTING A MIXTURE OF HEAVY HYDROCARBONS HAVING A NITROGEN CONTENT LESS THAN 3000 P.P.M.W. WITH A CATALYST IN THE PRESENCE OF HYDROGEN UNDER HYDROCRACKING CONDITIONS AND ADDING TO SAID MIXTURE OF HYDROCARBONS UP TO ABOUT 300 P.P.M.W OF AMMONIA OR A NITROGEN COMPOUND WHICH YIELDS AMMONIA UNDER THE CONDITIONS OF THE PROCESS.
Abstract:
LIGHT AND HEAVY NAPHTHA FRACTIONS ARE CONVERTED BY HYDROREFORMING AND HYDROCRACKING TO HIGH QUANTITY MOTOR FUEL IN HIGH YIELD. LIGHT NAPHTHA (180-400* F.) IS REFORMED CATALYTICALLY AND THE STABILIZED REFORMATE BLENDED WITH HEAVY NAPHTHA (400 TO 500* F.). THE MIXTURE IS
HYDROCRACKED IN THE PRESENCE OF PD-ZEOLITE CATALYST AT 650-800* F. HYDROCRACKATE (180-400* F.) IS FURTHER REFORMED CATALYTICALLY.
Abstract:
THE INVENTION RELATES TO THE PREPARATION OF LUBE OIL AND WAX FROM LOW VANADIUM CONTENT CRUDE OR RESIDUA FEED. THE FEED IS FIRST TREATED IN A CATALYST DISCARD ZONE HYDROCRACKER USING CATALYST PROVIDED BY REGNERATION OF LOW ACTIVITY CATALYST FROM A SUBSEQUENT MAIN HYDROCRACKING ZONE. THE DISCARD HYDROCRACKER COMPRISING A PLURALITY OF BEDS CONTAINING FLUIDISED CATALYST DESCENDING IN COUNTERCURRENT TO ASCENDING FEED AND HYDROGEN. CATALYST TRANSFER BETWEEN BEDS IS EXTERNAL OF THE REACTOR.
Abstract:
A process for the production and recovery of benzene from pyrolysis naphtha produced by high-temperature cracking of ethane, propane, naphtha or gas oil to produce ethylene. The process comprises the steps of hydrogenating a selected cut of pyrolysis naphtha to saturate olefins, reforming the hydrocarbon product from the hydrogenation step to convert benzene precursors to aromatic compounds and partially crack the nonaromatic hydrocarbons present and thereafter hydrodealkylating the hydrocarbon product from the reforming step to convert the alkyl aromatics to benzene and further crack nonaromatic compounds including those boiling at about the benzene boiling point, so that benzene may then be separated from the hydrodealkylation effluent by conventional distillation.
Abstract:
A process combination is disclosed to reduce the aromatics content of a key component of gasoline blends. Paraffins contained in catalytic reformates are conserved and upgraded by separation and isomerization, reducing the reforming severity required to achieve a given product octane with concomitant reduction in paraffin aromatization and cracking. Light reformate may be separated and isomerized, and heavier paraffins are separated from the reformate by solvent extraction or adsorption; the recovered heavy paraffins are isomerized, optionally at a substoichiometric hydrogen ratio. A gasoline component having a reduced aromatics content relative to reformate of the same octane number is blended from the net products of the separation and isomerization steps.
Abstract:
A straight-run naphtha is fractionated at about 66.degree. C., which is just below the boiling point of methylcyclopentane. The 66.degree. C.+ fraction is reformed, and at least a portion of the reformate combined with the 66.degree. C.- fraction and reacted under aromatization conditions over a ZSM-5-type catalyst to form a C.sub.5 + product rich in aromatics. The C.sub.5 + aromaticized product and the remaining reformate can be either sent for BTX recovery or used as a high-octane component of a gasoline blending pool.
Abstract:
A process which comprises recracking a cracked naphtha feed containing up to about 60 percent, suitably from about 20 to about 40 percent olefins, over a crystalline aluminosilicate zeolite catalyst to further crack the naphtha and saturate at least about 50 percent of the olefins, preferably from about 90 percent to about 100 percent of the olefins, based on the weight of said cracked naphtha feed. In a preferred combination a gas oil is catalytically cracked in a first stage to produce a cat cracked naphtha product of high olefin content, and an intermediate boiling component thereof is recracked as a feed in a second stage over a zeolite catalyst to saturate the olefins, and hydrodenitrogenate and hydrodesulfurize said cat cracked naphtha. The recracked cat cracked naphtha is then hydrotreated at low to mild severities and then catalytically reformed (hydroformed) to produce high octane gasoline.