Matches 1 - 50 out of 111 1 2 3 >
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7332070 Method of preventing heat exchanger fouling  
A specific nonionic surfactant is added to a component mainly comprising hydrocarbons before passing through a heat exchanger in a petrochemical plant or a polyolefin production plant, whereby...
6679975 Process for recovering the methanol contained in a liquid hydrocarbon feed  
The present invention aims to isolate the azeotropes formed in a distillation column (B 1 ) by methanol, propane and butane. The azeotropes are then liquefied in heat exchanger (E 2 ) and mixed in...
6590132 Separation of monomer from oligomer with lower bottoms temperature  
The process disclosed separates light olefins from heavy oligomers in a distillation column with an intermediary having a boiling point between the light olefin and the heavy oligomer in the column...
6413378 Apparatus for separation and purification of saturated hydrocarbon and method for separation and purification  
An extractive distillation tower 4 supplied with a feedstock containing butadiene and a solvent and for distilling the feedstock to separate and purify the butadiene. The tower 4 includes...
6395943 Process for inhibiting the polymerization of vinyl aromatic compounds  
A process is disclosed for inhibiting the polymerization of vinyl aromatic compounds, such as styrene, during its distillation. The process involves adding a mixture of at least two inhibitors to...
6395951 Adsorptive separation product recovery by fractional distillation  
Construction and operational costs of recovering the extract or raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to...
6395942 Increasing the thermal stability of a vinyl aromatic polymerization inhibitor  
Compounds that inhibit polymerization of vinyl aromatic compounds need to operate at temperatures of about 90° C. to about 150° C. A process for increasing the thermal stability of inhibitors...
6278035 Process for C2 recovery  
An improved process for separating a hydrocarbon bearing feed gas containing methane and lighter, C 2 (ethylene and/or ethane), and heavier components into a fraction containing predominantly...
6258258 Process for treatment of petroleum acids with ammonia  
The present invention is a process for decreasing the acidity of a starting acidic crude oil by contacting an acidic crude with an effective excess of ammonia dissolved in said crude to form an...
6054496 Method for transporting a heavy crude oil produced via a wellbore from a subterranean formation to a market location and converting it into a distillate product stream using a solvent deasphalting process  
A method for producing a heavy crude oil from a subterranean formation through a wellbore, transporting the heavy crude oil to a market location and converting the heavy crude oil into a product...
6030523 Process for neutralization of petroleum acids (LAW810)  
The present invention describes a process for decreasing the acidity of a starting calcium containing, non-acid treated acidic crude oil by adding such an acidic crude oil to an effective amount of...
6024866 Method of scavenging hydrogen sulfide from hydrocarbons  
Hydrocarbons, gas mixtures of hydrocarbons, and the like containing hydrogen sulfide are brought into intimate contact with a hydrogen sulfide scavenger prepared by reacting an alkylenepolyamine...
5980733 Method of removing sulfur compounds from hydrocarbon streams  
A method of removing hazardous sulfur compounds, such as hydrogen sulfide, mercaptans and sulfur oxides, from a fluid stream comprising contacting the fluid stream with an aqueous composition...
5976359 Methods for reducing the concentration of amines in process and hydrocarbon fluids  
Disclosed is a method for reducing the concentration of amines in hydrocarbon fluids and process streams by generating therein a nitrosating agent. The nitrosating agent will react with the amines...
5951853 Refinery atmospheric pipestill with ammonia stripping  
In an atmospheric pipestill stripping process where steam is utilized as the stripping gas to strip bottoms and side stream products, the improvement comprising utilizing ammonia or a ammonia and...
5935423 Method for producing from a subterranean formation via a wellbore, transporting and converting a heavy crude oil into a distillate product stream  
A method for producing a heavy crude oil from a subterranean formation via a wellbore, transporting the heavy crude oil to a market and producing a distillable hydrocarbonaceous stream from the...
5929125 Method for producing heavy crude oil via a wellbore from a subterranean formation and converting the heavy crude oil into a distillate product stream  
A method for producing a heavy crude oil from a subterranean formation through a wellbore and converting the heavy crude oil into a product distillate hydrocarbon stream and at least one of heat,...
5837130 Catalytic distillation refining  
A process for hydrotreating petroleum fractions early in the refining process by employing catalyst prepared as components of distillation structures or as contained beds of catalyst in atmospheric...
5807476 Method of removing sulfur compounds from sour crude oil and sour natural gas  
A method of removing hazardous sulfur compounds, such as hydrogen sulfide and sulfur dioxide, from sour crude oil and sour natural gas. An aqueous composition of an amine oxide surfactant, and...
5800738 Methods for inhibiting foam in crude oils  
Methods for inhibiting foam in crude oil or its fractions undergoing processing are disclosed. Low molecular weight polyisobutylene, preferably of about 320 daltons, is added to the crude oil or...
5643439 Process for neutralization of petroleum acids using alkali metal trialkylsilanolates  
The invention relates to a process for treating naphthenic acid-containing whole crudes or fractions thereof to reduce or eliminate their acidity by contacting the acidic whole crude at a...
5641396 Use of 2-amino-1-methoxypropane as a neutralizing amine in refinery processes  
2-amino-1-methoxypropane is used as a neutralizing amine in crude oil distillation units. The amine of the invention gives superior neutralization at the first initial condensate compared to other...
5556575 Corrosion inhibition in refineries using the reaction product of hydrocarbyl succinic anhydride and an amine  
Disclosed are a method for inhibiting corrosion in crude oil distillation towers, an improvement in crude oil fractionation, a method for dispersing iron sulfide in a hydrocarbon stream and a...
5545313 Desalting process for primary fractionator  
A simplified solution to the problem of salt precipitation on the trays of a the FCC main column removes salt or salt forming compounds from an naphtha slip stream. The invention removes...
5472637 Control of foam in hydrocarbon fluids  
A method and composition for foam control in non-aqueous systems utilizing polyisobutylene compounds. The method is especially well adapted for use in oil distillation units and coking of crude oil...
5468367 Antifoulant for inorganic fouling  
A salt of polyacrylic acid having a molecular weight of between 1,000 and 50,000, preferably 1,000 to 5,000, is used to inhibit inorganic fouling in crude oil.
5456823 Process for dehydration and/or desalination and for simultaneous fractionation of a petroleum deposit effluent  
A process for the dehydration and/or desalination and simultaneous fractionation of a petroleum deposit effluent containing oil, associated gas and water which can be saline, which process...
5454979 Fluorosilicone antifoam  
A fluorosilicone antifoam having excellent and persistent anti foam activity against foaming in aqueous or organic solvent solutions in which a silicone surfactant or fluorosurfactant is dissolved....
5326482 On-line acid monitor and neutralizer feed control of the overhead water in oil refineries  
A method and apparatus for automatically measuring the acidity of overhead water in an oil refinery, and dispensing a neutralizing agent into the refinery system at a rate responsive to that...
5266185 Method of suppression of hydrogen sulfide with heterocyclic-amine aldehyde reaction products  
Hydrogen sulfide evolution in a heavy hydrocarbon (such as a residual fuel oil) derived from a heavy crude oil (such as a API 8 gravity crude) is suppressed by contacting the hydrocarbon with a...
5258113 Process for reducing FCC transfer line coking  
Coke formation/deposition within and downstream of catalytic cracking reactors is suppressed by adding a coke suppressing additive to the cracking reactor and/or cracked product vapor. Free radical...
5225159 Deodorization of sewage sludge-derived oils  
A method is provided for treating a sewage sludge-derived oil having a particular chemical composition, to reduce its odor. The method includes the first step of distilling the sewage...
5182013 Naphthenic acid corrosion inhibitors  
Naphthenic acid corrosion in refinery distillation units is inhibited by introducing into the units effective amounts of a polysulfide corrosion inhibitor.
5173173 Trace contaminant removal in distillation units  
A hydrocarbon feedstock is simultaneously distilled into two or more fractions while trace concentrations of contaminants in the feedstock are absorbed onto a sorbent packing material during...
5154817 Method for inhibiting gum and sediment formation in liquid hydrocarbon mediums  
Gum and sediment formation in liquid hydrocarbon mediums are inhibited by adding to the medium a branched or straight chain C 1 -C 8 aminoalcohol. The invention is particularly well-suited for...
5076910 Removal of particulate solids from a hot hydrocarbon slurry oil  
A method for removing particulate solids, such as catalyst fines, from a hot slurry oil having a gravity of 5° API to 15° API, an atmospheric pressure initial boiling point of from about 500° F....
5034114 Acid neutralizing combustion additive with detergent builder  
Boiler fouling, particularly in air preheater section, is minimized by combining with a substance designed to neutralize acids a detergent builder such as the sodium, potassium and ammonium...
5019239 Inverted fractionation apparatus and use in a heavy oil catalytic cracking process  
A process and apparatus for fractionation of a superheated vapor in a fractionation column is disclosed. A conventional fractionator, having an inlet for hot vapors at the base, and a plurality of...
4992164 Method of charge neutralization using chelants  
A method of neutralizing chloride ions present in a hydrocarbon medium during processing in a petroleum refinery. Nitrilotriacetic acid or its salt form is injected into the crude charge upstream...
4931170 Method for lightening petroleum hydrocarbon oil by distillation  
A method for lightening a petroleum hydrocarbon oil by distillation in which 1 part by weight or less of an organic compound having an active mercapto group therein is added to 100 parts by weight...
4920792 Method for determining the amount of fluid in a core  
Methods and apparatus are provided to extract oil and brine fluids from a representative porous sample. The petrophysical properties of these extracted oil and brine fluids may be determined by...
4882041 Diluent substitution process  
In a process for the treatment of heavy oil, in which a hydrocarbon diluent is added to the heavy oil stream, part of the diluent is substituted by an LPG liquid stream. The LPG stream is added to...
4808298 Process for reducing resid hydrotreating solids in a fractionator  
An effective hydrotreating process is provided to minimize precipitation of asphaltenic solids in the product oil. In the preferred process, an aromatic diluent, preferably comprising decanted oil,...
4755277 Process for the preparation of a hydrocarbonaceous distillate and a residue  
A process is disclosed for the preparation of a hydrocarbonaceous distillate and a hydrocarbonaceous residue, which comprises mixing a residual fraction of a product obtained by catalytic cracking...
4711714 Method for the separation of gas from oil  
Water-insoluble polyoxyalkylene graft copolymers are effective anti-foam agents for reducing foaming in crude oil/gas separators. The copolymers are of formula: ##STR1## wherein R is an ethylene,...
4670131 Method for controlling fouling of hydrocarbon compositions containing olefinic compounds  
Fouling of equipment used for processing of organic feed streams containing olefinic compounds is controlled by inhibiting polymerization of the olefinic compounds by carrying out the processing in...
4601739 Process for fractional distillation  
Existing fractional distillation columns, especially those in extensive commercial use for separating the lower molecular weight hydrocarbons, are often limited in the quality of separation...
4537676 Reducing metal content of oil feeds  
A method for reducing the concentration of metal contaminants, such as vanadium and nickel, in the distillate from a petroleum fraction is disclosed. The method comprises contacting the petroleum...
4511453 Corrosion inhibition when distilling coal liquids by adding cresols or phenols  
Fractionation apparatus material corrosion in a coal liquefaction system is reduced by addition of compounds having a pK b <6 to tower feed streams or to the tower itself.
4511460 Minimizing corrosion in coal liquid distillation  
In an atmospheric distillation tower of a coal liquefaction process, tower materials corrosion is reduced or eliminated by introduction of boiling point differentiated streams to boiling point...
Matches 1 - 50 out of 111 1 2 3 >