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7244352 |
Selective hydroprocessing and mercaptan removal
A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss...
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6755964 |
Process for the fixed bed sweetening of petroleum distillates using halogenated metal phthalocyanine as a catalyst
A process for fixed bed sweetening of petroleum distillates using halogenating metal phthalocyanine as a catalyst comprising impregnating the catalyst on activated charcoal bed by circulating...
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6656977 |
Alkyl glycidyl ether-capped polyamine foam control agents
A method for controlling the foaming of an aqueous organic compound-containing composition by the incorporation of a foam controlling amount of a compound of the formula: where n and m are 2 or 3,x...
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6565740 |
Process for sweetening of LPG, light petroleum distillates by liquid-liquid extraction using metal phthalocyanine sulphonamide catalyst
The present invention related to a process for sweetening of LPG light petroleum distillates by liquid liquid extraction using metal phtalocyanine sulphonamide catalyst which comprises extracting...
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6352640 |
Caustic extraction of mercaptans (LAW966)
The invention describes a method for preparing a low sulfur motor gasoline utilizing ethanol and caustic extraction.
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6013175 |
Quaternary ammonium hydroxides as mercaptan scavengers
A method for scavenging mercaptans in a hydrocarbon fluid is disclosed. According to the method, an effective mercaptan-scavenging amount of an aqueous scavenging composition is added to the fluid....
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5961819 |
Treatment of sour hydrocarbon distillate with continuous recausticization
An improved process is described for removing mercaptan sulfur from sour hydrocarbon distillate streams comprising of treating a sour hydrocarbon distillate stream in two oxidation zones within a...
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5741415 |
Method for the demercaptanization of petroleum distillates
The demercaptanization of petroleum distillates may be carried out by means of the oxidation of the mercaptans contained therein using the oxygen in the air, at a temperature of about 80° to about ...
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5683574 |
Method for the extraction of low molecular weight mercaptans from petroleum and gas condensates
Low molecular weight mercaptans are extracted from petroleum (e.g., crude oil) or gas condensate by contacting the mercaptans with oxygen in an aqueous solution of a metal hydroxide in the presence...
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5340465 |
Use of a metal oxide solid solution for sweetening a sour hydrocarbon fraction
An improved process for treating a sour hydrocarbon stream has been developed. This process involves contacting the sour hydrocarbon fraction with a metal oxide solid solution in the presence of an...
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5273646 |
Process for improving the activity of a mercaptan oxidation catalyst
This invention relates to a process for improving the activity of a catalyst effective in sweetening a hydrocarbon fraction containing mercaptans. The process involves adding to the hydrocarbon...
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5244643 |
Treatment of oxygen containing gaseous hydrocarbons for mercaptan removal
Fuel gas streams containing oxygen are treated by a process that performs simultaneous sweetening and absorption of mercaptan compounds. The mercaptan oxidation catalyst and an aqueous alkaline...
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5180484 |
Caustic free liquid/liquid process for sweeting a sour hydrocarbon fraction
This invention relates to a liquid-liquid process for treating a sour hydrocarbon fraction. The process comprises contacting the hydrocarbon fraction in the presence of an oxidizing agent with an...
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5169516 |
Removal of arsenic compounds from light hydrocarbon streams
A process for removal of arsenic from a hydrocarbon stream containing arsenic together with mercaptan and non-mercaptan sulfur compounds. The hydrocarbon stream is passed through at least two...
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4968411 |
Method of treating a hydrocarbon chargestock
A catalyst composition useful in the catalytic oxidation of mercaptans is disclosed. The composition is a stable aqueous slurry or suspension of a first component which is predominantly a metal...
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4956325 |
Method of impregnating a support material
The present invention is directed to impregnating a support material with a metal phthalocyanine oxidation catalyst dissolved in monoethanol amine. More specifically, the invention is directed to...
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4929340 |
Catalyst and process for sweetening a sour hydrocarbon fraction using dipolar compounds
This invention relates to an improved process and catalyst for treating a sour hydrocarbon stream. The improvement comprises the use of a dipolar compound which has a positively charged atom and an...
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4913802 |
Process for sweetening a sour hydrocarbon fraction
This invention relates to a process for sweetening a sour hydrocarbon fraction containing mercaptans. The process involves contacting the hydrocarbon fraction in the presence of an oxidizing agent...
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4909925 |
Removal of hydrogen sulphides
Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula ##STR1## to the feedstock. R is an alkyl group containing 1 to 18...
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4908122 |
Process for sweetening a sour hydrocarbon fraction
The present invention deals with a process for sweetening a sour hydrocarbon fraction containing mercaptans. The process involves contacting the hydrocarbon fraction in the presence of an oxidizing...
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4906354 |
Process for improving the thermal stability of jet fuels sweetened by oxidation
The thermal stability of jet fuel sweetened by oxidation is improved by washing the sweetened fuel with strong aqueous caustic.
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4897180 |
Catalytic composite and process for mercaptan sweetening
This invention relates to a catalytic composite effective in oxidizing mercaptans contained in a sour petroleum distillate to disulfides. The catalytic composite comprises a metal chelate, an onium...
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4808765 |
Sulfur removal from hydrocarbons
There is disclosed a process for treating liquid (liquifiable) and gaseous hydrocarbons to remove substantially all of the acid gases including COS by contacting the hydrocarbon streams with...
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4705620 |
Mercaptan extraction process
A process is disclosed for treating a sour hydrocarbon stream comprising extracting the mercaptans contained in said hydrocarbon stream with an alkaline solution in an extraction zone, oxidizing...
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4490246 |
Process for sweetening petroleum fractions
A process is disclosed for treating hydrocarbon streams by the catalyzed oxidation of mercaptans to disulfides. In the process, the hydrocarbon-containing stream is admixed with air and then passed...
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4481107 |
Oxidation of difficultly oxidizable mercaptans
A process is disclosed for oxidizing difficultly oxidizable mercaptans contained in a hydrocarbon fraction which comprises adding a hydrocarbon soluble alkali metal compound, capable of forming the...
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4481106 |
Hydrocarbon treating process
A process is disclosed for treating hydrocarbon streams such as naphtha by the oxidation of mercaptans into disulfide compounds which remain in the hydrocarbon stream. The conversion is effected...
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4412912 |
Hydrocarbon treating process having minimum gaseous effluent
A process is disclosed for treating hydrocarbon streams for the purpose of removing mercaptans and also converting the remaining mercaptans to disulfides which remain in the hydrocarbon stream...
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4411776 |
Method for treating mercaptans contained in a sour petroleum distillate
A method of treating a mercaptan-containing sour petroleum distillate is disclosed which method comprises the steps of contacting the distillate at oxidation conditions with a catalytic composite...
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4378305 |
Catalytic composite particularly useful for the oxidation of mercaptans and the removal of gums contained in a sour petroleum distillate
A catalytic composite comprising a metal chelate mercaptan oxidation catalyst impregnated on a basic anion exchange resin is disclosed. The catalytic composite is particularly useful to effect the...
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4374042 |
Method of reactivating a catalytic composite of a carrier material and a mercaptan oxidation catalyst
A method of reactivating a mercaptan oxidation catalytic composite of an adsorptive support and a metal chelate comprising contacting the composite with an aqueous solution of a quaternary ammonium...
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4364843 |
Catalytic composite, method of manufacture, and process for use
A catalytic composite comprising a metal chelate, at least about 10 wt. % of an alkali metal hydroxide, and an adsorptive support, prepared by admixing the support, metal chelate, alkali metal...
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4360421 |
Method for treating mercaptans contained in a sour petroleum distillate
A method of treating a mercaptan-containing sour petroleum distillate which comprises contacting said distillate with a catalytic composite comprising a carrier material, a metal chelate oxidation...
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4354926 |
Catalytic composite and process for use
Disclosed are a metal chelate-alkali metal hydroxide-quaternary ammonium hydroxide catalytic composite, and a process of treating sour petroleum distillates utilizing the catalytic composite. The...
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4337147 |
Catalytic composite and process for use
Disclosed is a method for treating sour mercaptan-containing petroleum distillates by contacting the distillates at oxidation conditions with a catalytic composite comprising a metal chelate, an...
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4320029 |
Catalytic composite, method of manufacture, and process for use
A catalytic composite especially useful in the treatment of sour petroleum distillates, comprising a carrier material, a metal chelate, a substituted ammonium compound, and a linear ionic compound....
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4299729 |
Method of reactivating a catalytic composite of an adsorptive carrier material and a mercaptan oxidation catalyst
A method of reactivating a mercaptan oxidation catalytic composite of an adsorptive support and a metal chelate comprising the steps of first contacting the composite with an aqueous ammoniacal...
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4298463 |
Method of treating a sour petroleum distillate
A method of treating a mercaptan-containing sour petroleum distillate which comprises contacting said distillate at oxidation conditions with a mercaptan oxidation catalyst, such as a metal...
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4290913 |
Catalytic composite useful for the treatment of mercaptan-containing sour petroleum distillate
Disclosed is a catalytic composite especially useful in the treatment of sour mercaptan-containing petroleum distillates. The catalytic composite comprises a metal chelate, an alkali metal...
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4290917 |
Method of manufacturing a catalytic composite
Disclosed is a method of preparing a catalytic composite useful in the treatment of sour mercaptan-containing petroleum distillates. More specifically, the method of preparation comprises...
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4260479 |
Catalytic oxidation of mercaptan in sour petroleum distillate
A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The process comprises contacting said distillate with a supported mercaptan oxidation catalyst at oxidation...
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4248694 |
Process for treating a sour petroleum distillate
A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The distillate is treated in contact with a solid composite prepared by impregnating high density activated...
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4243551 |
Catalyst for oxidizing mercaptans and mercaptide compounds and method for preparing
Disclosed is a catalyst and method for converting mercaptans and mercaptide compounds in aqueous alkaline solution to disulfides. Catalytic agent is a metal complex synthesized from...
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4203827 |
Process for treating sour petroleum distillates
A process for treating a mercaptan-containing sour petroleum distillate is disclosed. A sour petroleum distillate, in admixture with an oxidizing agent, is passed into contact with a catalytic...
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4168245 |
Preparation of a supported metal phthalocyanine catalyst
A method of preparing a supported metal phthalocyanine catalyst is disclosed. A metal phthalocyanine is impregnated on a solid adsorptive support from an aqueous impregnating solution or dispersion...
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4124531 |
Catalytic composite for the treatment of sour petroleum distillates
A catalytic composite comprising a solid adsorptive support impregnated with a polynuclear aromatic sulfonic acid and a metal phthalocyanine is disclosed. The catalytic composite is particularly...
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4121999 |
Catalytic oxidation of petroleum distillates with charcoal and with supported metal phthalocyanine
A catalytic process for treating sour petroleum distillates is disclosed. A sour petroleum distillate containing phenolic catalyst toxins or toxin precursors are pretreated in contact with an...
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4120865 |
Metal complex and method for preparing
Disclosed is a catalyst and method for converting mercaptans and mercaptide compounds in aqueous alkaline solution to disulfides. Catalytic agent is a metal complex synthesized from...
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4100057 |
Method of treating a sour petroleum distillate
An improved method of treating a sour petroleum distillate is disclosed. Morpholine is admixed with the sour distillate and the distillate thereafter contacted with a metal phthalocyanine catalyst...
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4098681 |
Oxidation of mercaptans in a petroleum distillate with a supported metal phthalocyanine catalyst
A method for treating a sour petroleum distillate is disclosed. The distillate is treated in contact with a catalyst in the presence of an alkaline reagent at oxidation conditions, said catalyst...
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