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| Number | Title | Issue Date |
| 4557821 | Heavy oil hydroprocessing Heavy or refractory oils are hydroprocessed in the presence of added water and added hydrogen sulfide with or without a slurry catalyst comprising molybdenum sulfide. The water and hydrogen sulfide may originate from the catalyst preparation procedure.... | 12/10/1985 |
| 4555584 | Process for producing conjugated dienes Large surface area oxidative dehydrogenation catalysts which are suitable for converting C4 to C8 mono-olefins to conjugated dienes are disclosed, comprising the oxides of vanadium, phosphorus, tin and potassium in combination with h... | 11/26/1985 |
| 4536281 | Large pore catalysts for heavy hydrocarbon conversion Disclosed is a catalyst, a method for its preparation, and a process for its use in the production of high octane gasoline and/or other valuable liquid hydrocarbon products from carbo-metallic oils contaminated with heavy metals and coke precursors. The c... | 08/20/1985 |
| 4533461 | Process for producing mesophase pitch A substantially uniform mesophase pitch is prepared by treating a mesophase forming pitch material at elevated temperatures above about 380° C. to produce a mixture of mesophase and non-mesophase pitch containing about 20% to about 80% mesophase. The mix... | 08/06/1985 |
| 4532026 | Method to improve circulation control in fluidized systems A method for improving fluidization of a particulate material flowing through a fluid conductor is provided by controlling the rate of addition of fluid, such as aerating gas or steam at a plurality of spaced apart locations along the conduit. The composi... | 07/30/1985 |
| 4527004 | Purification of olefins by boron trifluoride-alcohol treatment A process for purifying predominantly straight chain olefins having from 5 to 50 carbon atoms which comprises contacting the olefins with a liquid solution of boron trifluoride in an alcohol or mixture of alcohols.... | 07/02/1985 |
| 4527003 | Thermal cracking process for producing olefins from hydrocarbons A thermal cracking process for producing olefins from hydrocarbons which comprises the steps of burning hydrocarbons with less than the theoretical amount of oxygen in the presence of steam to give a hot gas of from 1400° to 300° C. comprising steam and... | 07/02/1985 |
| 4527002 | Thermal cracking method for producing olefines from hydrocarbons In methods of manufacturing olefines by thermally cracking hydrocarbons, there is disclosed a thermal cracking method for producing olefines from hydrocarbons, characterized in that hydrocarbon is burnt with oxygen in the presence of steam to generate a h... | 07/02/1985 |
| 4525268 | Combination process for upgrading residual oils A combination operation for upgrading reduced crudes is described which particularly restricts the contact time between hydrocarbons, solid sorbent material and cracking catalyst particles whereby quenching of visbroken product vapors is eliminated, coke ... | 06/25/1985 |
| 4524233 | Process for the production of dienes from aldehydes This invention is directed to a process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase at a temperature of 300° to 400° C. with a catalyst comprising boron phosphate wherein th... | 06/18/1985 |
| 4524235 | Olefin disproportionation and catalyst therefor An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of tungsten oxide or molybdenum oxide with a promoting amount of at least one elemental metal selected from zinc and manganes... | 06/18/1985 |
| 4524227 | Coproduction of durene and gasoline from synthesis gas and alcohols and separation of durene-gasoline mixtures Durene is recovered from a mixture rich in durene and containing hydrocarbons boiling in the gasoline range by cooling the mixture to a point where crystallization occurs and separating the crystallized durene. The durene subsequently is washed with a was... | 06/18/1985 |
| 4524236 | Process for oxydehydrogenation of ethane to ethylene A process for the low temperature oxydehydrogenation of ethane to ethylene uses a calcined oxide catalyst containing Mo, V, Nb, Sb, and at least one metal from a given group of metals.... | 06/18/1985 |
| 4523046 | Method for gasoline yield enhancement in the fixed bed methanol-to-gasoline process Gasoline product yield is enhanced in a fixed bed methanol-to-gasoline process by splitting the conversion reactor into a series of smaller conversion reactors such that the total amount of catalyst normally present in the single conversion reactor is pre... | 06/11/1985 |
| 4522710 | Method for increasing deasphalted oil production A method for increasing the production of deasphalted oil is described. The method comprises passing a hydrocarbon feedstock into a first distillation zone wherein the feedstock is separated into a first distillate and a first residuum. First residuum is ... | 06/11/1985 |
| 4522703 | Thermal treatment of heavy hydrocarbon oil This invention provides a process for upgrading heavy hydrocarbon oil by thermal treatment which in one preferred embodiment involves heating a petroleum residuum type of heavy oil feedstock at a temperature of 450°-550° C. and a pressure of 10-200 psi ... | 06/11/1985 |
| 4523050 | Methane conversion process An improved method for converting methane to higher hydrocarbon products by contacting a hydrocarbon gas comprising methane, an oxygen-containing gas and a reducible metal oxide under synthesis conditions, the improvement which comprises contacting methan... | 06/11/1985 |
| 4522709 | Catalytic hydrodesulfurization or hydrodenitrogenation The catalytic hydrodesulfurization and/or hydrodenitrogenation of an organic sulfur compound and/or an organic nitrogen compound is carried out in the presence of a hydrogel derived catalyst comprising zinc titanate and alumina promoted with cobalt and mo... | 06/11/1985 |
| 4523049 | Methane conversion process An improved method for converting methane to higher hydrocarbon products by contacting a hydrocarbon gas comprising methane, an oxygen-containing gas and a reducible metal oxide under synthesis conditions, the improvement which comprises contacting methan... | 06/11/1985 |
| 4522706 | Hydrocarbon treating processes using perovskite-containing catalytic compositions Hydrocarbon treating processes such as catalytic cracking and fluid coking are provided in which a perovskite-containing catalytic composition is used as catalyst. The perovskite-containing catalytic composition is produced by interrupting the reaction of... | 06/11/1985 |
| 4522705 | Octane enhancement and total liquid product yield improvements in catalytic cracking using in-situ crystallized ZSM-5 clay aggregates Octane and total yield improvement in catalytic cracking of petroleum fractions under cracking conditions can be obtained by adding to conventional cracking catalysts small amounts of an additive catalyst comprising a class of zeolites characterized by a ... | 06/11/1985 |
| 4522707 | Method for processing used oil A method for processing a used oil which comprises about 70 percent by weight spindle and neutral oils, about 5 percent by weight lower and higher boiling point oils, about 10 percent by weight useful additives and oxidation products, about 10 percent by ... | 06/11/1985 |
| 4522704 | Passivation of cracking catalysts A method for passivating the adverse catalytic effects of metal contaminants, such as nickel, vanadium and iron, which become deposited on cracking catalyst is disclosed. A passivation promoter selected from the group consisting of cadmium, germanium, ind... | 06/11/1985 |
| 4521295 | Sustained high hydroconversion of petroleum residua feedstocks A process for high hydroconversion of petroleum residua containing at least about 25 V % material boiling above 975° F. to produce lower boiling hydrocarbon liquid products and avoid undesirable precipitation of asphaltene compounds. In the process, the ... | 06/04/1985 |
| 4521297 | Catalytic conversion of shale oil The invention provides a process of converting shale oil fractions with the catalyst made by beginning the synthesis in the usual way and adding additional trivalent metal ion after crystallization is 20 to 90 percent complete and continuing the crystalli... | 06/04/1985 |
| 4521293 | Oil recovery A process for upgrading carbonaceous materials having low carbon content comprising preheating the carbonaceous material to a temperature above about 200° C. in the absence of a solvent, extracting the heated carbonaceous material under moderate temperat... | 06/04/1985 |
| 4521638 | Process for preparation of tertiary olefins Disclosed is a process for the preparation of tertiary olefins which comprises catalytically decomposing a tertiary ether to a tertiary olefin, wherein the catalytic decomposition of the tertiary olefin is carried out in the presence of a solid phosphoric... | 06/04/1985 |
| 4519807 | Carbonaceous solid fuel A molded solid fuel comprises a carbonaceous fuel material, a desulfurizing agent, and K2 CO3 and is effective to emit a reduced amount of sulfur when burned.... | 05/28/1985 |
| 4520222 | Polymerization catalyst and deodorizing agent and process of use Calcium silicate treated with an acid can be used as a polymerization catalyst or as a deodorizing agent. The acid is sulfuric acid, phosphoric acid or nitric acid.... | 05/28/1985 |
| 4519901 | Extractive separation process An improved extractive separation process is described. This process is directed at splitting the feed and/or recycle stream to the extraction zone, to improve extraction zone performance. A further improvement may be achieved if at least a portion of the... | 05/28/1985 |
| 4520214 | High selectivity process for dehydrogenation of paraffinic hydrocarbons An improved process for the catalytic dehydrogenation of paraffinic hydrocarbons is disclosed. Feed paraffinic hydrocarbons are dehydrogenated to yield an olefin-containing vapor stream, which is partially condensed to produce a liquid phase process strea... | 05/28/1985 |
| 4520216 | Process for the preparation of synthetic hydrocarbons Synthetic hydrocarbons, especially high octane gasoline, are prepared by catalytic conversion in two steps of a synthetic gas containing hydrogen and carbon oxides. In the first step the synthesis gas is converted at 10-80 bar and 200°-300° C. into an i... | 05/28/1985 |
| 4520223 | Dehydrogenation process Platinum or other platinum-group metals can be deposited substantially on the surface only of pellets of a refractory catalyst support by impregnation with an aqueous solution of such as hexammonium platinum tetrasulfite. The resulting catalysts contain r... | 05/28/1985 |
| 4520217 | Pyrolysis of natural gas liquids to aromatic hydrocarbons using a hot recycled gas Method and apparatus for converting components of natural gas liquids to aromatic compounds by certain pyrolysis and recycle steps wherein the ultimate yield of light aromatics is maximized while the compression and other costs are minimized.... | 05/28/1985 |
| 4519897 | Fluid cracking process using sepiolite-containing catalyst composition There is disclosed a process for cracking a metal-containing feed in the presence of a fluid cracking catalyst composition comprising contacting said feed at catalytic cracking conditions with a catalyst composition comprising a zeolitic crystalline alumi... | 05/28/1985 |
| 4520128 | Catalyst having high metal retention capacity and good stability for use in the demetallization of heavy crudes and method of preparation of same A new active stable catalyst for use in the removal of sulphur, nitrogen, contaminating metals, asphaltenes and Conradson carbon from heavy crudes and residues and, in particular, a method for the preparation of the catalyst and a process for the treatmen... | 05/28/1985 |
| 4520224 | Thermal cracking method for producing olefins from hydrocarbons A thermal cracking method for producing olefins from hydrocarbons which comprises the steps of mixing said hydrocarbons with a mixed gas of methane and hydrogen in a methane/hydrogen mol ratio of 0.2 or more; prior to reaction carrying out a thermal crack... | 05/28/1985 |
| 4520225 | Process for the pretreatment of light olefin fractions The invention relates to a process for the pretreatment of a light olefin fraction, or of a mixture of such fractions, for the purpose of selectively removing the isobutene and butadiene present. In accordance with the invention, the olefin fraction is contact... | 05/28/1985 |
| 4519900 | Zeolite containing catalyst support for denitrogenation of oil feedstocks There is provided a zeolite containing catalyst support for denitrogenation of oil feedstocks such as shale oil. The denitrogenation catalyst contains an active hydrogenation catalyst component such as a nickel/molybdenum catalyst.... | 05/28/1985 |
| 4518483 | Aromatic pitch from asphaltene fractions A pitch suitable for carbon artifact manufacture, such as the manufacture of carbon fibers, is obtained by heat-soaking an asphaltene fraction of a heavy aromatic feedstock at a temperature of about 380°-440° C. for about 1-500 minutes.... | 05/21/1985 |
