Abstract: A process for cracking high metals content feedstocks which comprises contacting said feedstocks under catalytic cracking conditions with a novel catalytic cracking composition comprising a solid cracking catalyst and a magnesium oxide diluent.
Abstract: A fluid catalytic cracking unit equipped with multiple feed injection points along the length of the riser is operated such that portions of the same fresh feed are charged to different feed injection points. Preferably, the hydrocarbon fresh feed can be split into two or more non-distinct fractions, with one fraction charged to the bottom injection point along the length of the riser reactor, and the remaining fractions charged to injection points progressively higher up along the length of the riser reactor. Unconverted slurry oil boiling above 650.degree. F. can be recycled to one or more of the various injection points along the length of the riser.
Abstract: A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds such as aqueous ammonium molybdates or tungstates. The aqueous ammonium molybdates or tungstates are sulfided at a relatively low temperature with hydrogen sulfide without feed oil. The slurry stream is then passed through a separator and ammonia is flashed and separated from the system, leaving a separator residue slurry. The separator residue slurry is then mixed with feed oil, hydrogen and hydrogen sulfide and sulfided at a relatively high temperature to produce a dispersed molybdenum sulfide or tungsten sulfide catalyst of high hydroprocessing activity. The catalyst slurry and feed oil can then be passed to a hydroprocessing reactor.
Abstract: Dibasic carboxylic acids or salts thereof are used to remove metals, particularly calcium and iron, from hydrocarbonaceous feedstocks. An aqueous solution of the acid is used to extract the metals from the feedstock prior to processing. Oxalic acid is the preferred compound.
Abstract: A process for functionalizing methane comprising:(a) reacting methane with a hydridoalkyl metal complex of the formula:CpIr[P(R.sub.1).sub.3 ]H(R.sub.2)wherein Cp represents a cyclopentadienyl or alkylcyclopentadienyl radical having from 1 to 5 carbon atoms;Ir represents an iridium atom;P represents a phosphorus atom;R.sub.1 represents an alkyl group;R.sub.2 represents an alkyl group having at least two carbon atoms; andH represents a hydrogen atom, in the presence of a liquid alkane R.sub.3 H having at least three carbon atoms to form a hydridomethyl complex of the formula:CpIr[P(R.sub.1).sub.3 ]HMewhere Me represents a methyl radical.(b) reacting said hydridomethyl complex with an organic halogenating agent such as a tetrahalomethane or a haloform of the formulas:CX'X"X'"X"" or CHX'X"X'";wherein X', X", X"', and X"" represent halogens selected from bromine, iodine and chlorine, to halomethyl complex of step (a) having the formula:CpIr[P(R.sub.1).sub.
Type:
Grant
Filed:
February 21, 1985
Date of Patent:
July 18, 1989
Inventors:
Robert G. Bergman, J. Michael Buchanan, Jeffrey M. Stryker, Michael J. Wax
Abstract: A process is disclosed for removing metals contaminants, particularly iron, and more particularly non-porphyrin, organically-bound iron compounds, from hydrocarbonaceous feedstock, particularly crude petroleum or residua. The process comprises mixing the feedstock with an aqueous solution of hydroxo-carboxylic acids or salts thereof, preferably citric acid, and separating the aqueous solution and metals from the demetalated feedstock.
Abstract: Poisoning of a cracking catalyst by contaminant metals such as nickel, vanadium and iron during fluid catalytic cracking of hydrocarbon charge stock containing the contaminant metals is suppressed by depositing minor amounts of a bismuth-containing passivating agent on the catalyst, desirably, a weight ratio of bismuth to nickel equivalents (nickel+0.2 vanadium+0.1 iron) of about 0.01:1 to about 1:1. The passivating agent can also comprise mixtures of compounds of bismuth and antimony, bismuth and tin.
Type:
Grant
Filed:
May 5, 1987
Date of Patent:
November 15, 1988
Assignee:
Chevron Research Company
Inventors:
Periaswamy Ramamoorthy, Ashok S. Krishna
Abstract: A process is disclosed for removing metals contaminants, particularly calcium compounds, from hydrocarbonaceous feedstocks using aqueous carbonic acids, its salts, or mixtures thereof as the metals extraction agent. The hydrocarbonaceous layer and aqueous layers are then separated and the demetalated hydrocarbonaceous feedstock is removed for further processing.
Abstract: A process is disclosed for the removal of metals contaminants, particularly calcium, from hydrocarbonaceous feedstocks. The process comprises mixing the feedstock with an aqueous solution of a metals sequestering agent, particularly hydroxocarboxylic acids, especially citric acid, then salts or mixtures thereof, and separating the aqueous solution containing the metals from the demetalated feedstock.
Abstract: A process is disclosed for the removal of metals contaminants, particularly calcium, from hydrocarbonaceous feedstocks. The process comprises mixing the feedstock with an aqueous solution of a metals sequestering agent, particularly amino-carboxylic acids, their salts, or mixtures thereof, more particularly EDTA, and separating the aqueous solution containing the metals from the demetalated feedstock.
Abstract: A process is disclosed for the demetalation of organically-bound compounds of Group VIII metals, particularly iron, from hydrocarbonaceous feedstock. In the process, an aqueous solution of amino-carboxylic acid, or salts, particularly EDTA, is used to form complexes with the metals and extract them from the feedstock. The aqueous phase containing the complexed metals contaminants is then separated from the hydrocarbonaceous phase.
Abstract: Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a calcium-containing additive as a vanadium passivating agent.
Abstract: Process for functionalizing saturated hydrocarbons comprising:(a) reacting said saturated hydrocarbons of the formula:R.sub.1 Hwherein H represents a hydrogen atom; and R.sub.1 represents a saturated hydrocarbon radical, with a metal complex of the formula:CpRh[P(R.sub.2).sub.3 ]H.sub.2whereinCp represents a cyclopentadienyl or alkylcyclopentadienyl radical;Rh represents a rhodium atom;P represents a phosphorus atom;R.sub.2 represents a hydrocarbon radical;H represents a hydrogen atom,in the presence of ultraviolet radiation to form a hydridoalkyl complex of the formula:CpRh[P(R.sub.2).sub.3 ](R.sub.1)H(b) reacting said hydridoalkyl complex with an organic halogenating agent such as a tetrahalomethane or a haloform of the formulas:CX'X''X'''X'''' or CHX'X''X'''wherein X', X'', X'", X"" represent halogens selected from bromine, iodine or chlorine atom, at a temperature in the range of about -60.degree. to -17.degree. C. to form the corresponding haloalkyl complex of step (a) having the formula:CpRhPMe.sub.
Type:
Grant
Filed:
February 21, 1985
Date of Patent:
May 24, 1988
Assignee:
Chevron Research Company
Inventors:
Robert G. Bergman, Andrew H. Janowicz, Roy A. Periana
Abstract: Burned oil shale recycled as heat transfer solids in retorting process conditioned under reducing conditions with hydrocarbon to improve product yield.
Type:
Grant
Filed:
June 22, 1983
Date of Patent:
February 2, 1988
Assignee:
Chevron Research Company
Inventors:
Robert P. Sieg, P. Henrik Wallman, James R. Ouimette
Abstract: Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a calcium-containing additive e.g. calcium corbonate dolomite and amorphous as a vanadium passivating calcium silicate agent.
Abstract: A process for beneficiating oil shale is disclosed including the steps of grinding the shale to fine particles in an aqueous medium, portions of which are kerogen-rich and kerogen-poor, scrubbing the particles, separating the particles by either selectively flocculating out a fraction, redispersing the fraction and reseparating using froth flotation, or vice versa, and oil agglomerating/dewatering the kerogen-rich fraction.
Type:
Grant
Filed:
August 22, 1985
Date of Patent:
June 16, 1987
Assignee:
Chevron Research Company
Inventors:
Rabinder S. Datta, Frank F. Aplan, Charles Zebula
Abstract: A process for grinding organic-containing mineral matter, particularly oil shale, is disclosed comprising a series of increasing finer grind-producing grinding steps, each followed by an organic beneficiation step. A portion of the organic-enhanced beneficiation product is mixed with each successive grinding step feed.
Abstract: A process for cracking high metals content feedstocks which comprises contacting said feedstocks under catalytic cracking conditions with a novel catalytic cracking composition comprising a solid cracking catalyst and an alumina diluent.
Abstract: A novel catalyst system for use in a distillation column reactor is disclosed including annularly-defined spaces within the reactor comprised of vapor-permeable material with packed catalyst and alternately positioned vapor barrier means.