|
Match
|
Document |
Document Title |
|
|
8129576 |
Protection of solid acid catalysts from damage by volatile species
The invention provides a method to avoid catalyst damage and achieve longer catalyst life by selecting appropriate materials for reactor spacers, liners, catalyst binders, and supports, in...
|
|
|
8128804 |
Process for stabilizing olefinically unsaturated monomers
An olefinically unsaturated monomer is stabilized by a retarder-containing composition which comprises a solvent and a quinone methide as a retarder.
|
|
|
8124020 |
Apparatus for preventing metal catalyzed coking
A process and apparatus is described in which a sulfiding agent is added to a catalytic conversion reactor to prevent metal catalyzed coking. The catalytic reactor may be downstream from a first...
|
|
|
8124822 |
Process for preventing metal catalyzed coking
A process and apparatus is described in which a sulfiding agent is added to a catalytic conversion reactor to prevent metal catalyzed coking. The catalytic reactor may be downstream from a first...
|
|
|
8118995 |
Process for inhibiting fouling in hydrocarbon processing
A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing aldehyde compounds with an antifoulant while treating the hydrocarbon media with a basic...
|
|
|
8062504 |
Method for reducing oil fouling in heat transfer equipment
A method of reducing asphaltene and particulate induced fouling during the thermal processing of petroleum oils utilizes resin extracts from HSDP crude oils to disperse and solubilize asphaltenes...
|
|
|
8057707 |
Compositions to mitigate coke formation in steam cracking of hydrocarbons
The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam...
|
|
|
8058493 |
Removing amines from hydrocarbon streams
Corrosive amine salts in hydrocarbon streams such as desalted crude oil streams can be prevented or avoided by adding certain amine scavenging chemicals to the streams to remove the amines...
|
|
|
8034131 |
Method of inhibiting deposit formation in a jet fuel at high temperatures
A method of inhibiting deposit formation in a jet fuel at temperatures above 150° C., whilst not substantially adversely affecting the water separability of the jet fuel. The method includes the ...
|
|
|
7943809 |
Composition and method for inhibiting polymerization and polymer growth
A method for inhibiting the premature polymerization and the polymer growth of ethylenically unsaturated monomers is disclosed wherein the method comprises adding to said monomers an effective...
|
|
|
7922896 |
Method for reducing fouling of coker furnaces
A method for reducing furnace fouling in a delayed coking process comprising (a) supplying at least one feed to a delayed coking unit comprised of coker furnace, at least two coke drums and a coker...
|
|
|
7906012 |
Method for reducing foam in a primary fractionator
The present invention includes methods for improving the operational parameters in primary fractionators which are experiencing diminished operation efficiencies due to deposits of polymerized...
|
|
|
7871511 |
Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin
A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or...
|
|
|
7833407 |
Method of blending high TAN and high SBN crude oils and method of reducing particulate induced whole crude oil fouling and asphaltene induced whole crude oil fouling
A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSDP component dissolves...
|
|
|
7799212 |
Method for preventing fouling of a heat exchanger for cooling residue from a hydrodesulfurization/hydrocracking process
A method which controls sedimentation occurring at a heat exchanger for cooling hydrodesulfurization/hydrocracking residue containing asphaltenes at a high content and thereby prevents fouling of...
|
|
|
7763766 |
Methanol-to-olefins process with reduced coking
A process for producing light olefins from oxygenates wherein internal reactor are protected from metal-catalyzed coking preferably by employing a protective layer.
|
|
|
7740750 |
Application of visbreaker analysis tools to optimize performance
A system and method for quantifying opaque inhomogeneities within a fluid sample. The system uses an optical lens system to focus a light beam onto a stage where the sample is introduced. The light...
|
|
|
7704376 |
Fouling inhibition of thermal treatment of heavy oils
The use of water-soluble aromatic polysulfonic acid salts for inhibiting fouling in process equipment used in the thermal treatment of heavy oils.
|
|
|
7604730 |
Coking reduction in cracking reactors
The invention concerns a method for reducing coking on the metal walls of a reactor cracking hydrocarbons or other organic compounds and on the metal walls of a heat exchanger placed downstream of...
|
|
|
7594989 |
Enhanced thermal upgrading of heavy oil using aromatic polysulfonic acid salts
A method for upgrading heavy oils by contacting the heavy oil with a water-soluble aromatic polysulfonic acid salt and then thermally treating the contacted heavy oil. The polysulfonic acid salt...
|
|
|
7575669 |
Method of removal of carbonyl compounds along with acid gases from cracked gas in ethylene process
A method for mitigating fouling in a wash unit used in a hydrocarbon cracking process wherein the fouling is due to the presence of polymers and deposits thereof formed by condensation of carbonyl...
|
|
|
7513260 |
In-situ continuous coke deposit removal by catalytic steam gasification
A coke removal system removes coke deposits from the walls of a high temperature passage in which hydrocarbon fuel is present. The system includes a carbon-steam gasification catalyst and a water...
|
|
|
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...
|
|
|
7282136 |
Method of dispersing hydrocarbon foulants in hydrocarbon processing fluids
A method of dispersing, dissolving, or reducing the viscosity of hydrocarbon foulants including heavy oil, tars, asphaltenes, polynuclear aromatic hydrocarbons, coke, polymers, light oil, oxidized...
|
|
|
7279089 |
Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates
Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates, characterised in that it comprises injecting as an additive a choline or a derivative thereof.
|
|
|
7182839 |
Preventing deposition of fouling agents onto equipment
Methods and compositions effective to prevent deposition of fouling agents, preferably polymerization precursors, on handling equipment, particularly during solvent recovery.
|
|
|
7172686 |
Method of increasing distillates yield in crude oil distillation
Methods of separating components of a mixture, such as crude oil, are disclosed which increase the yield of individual components while decreasing the yield of residue. In one method, a heated...
|
|
|
7132577 |
Method of inhibiting coke formation in ethylene dichloride pyrolysis cracker
Provided is a method of inhibiting the formation of coke in an ethylene dichloride to vinyl chloride monomer pyrolysis cracker. The coke formation, which occurs during an ethylene dichloride...
|
|
|
7128826 |
Polymerization inhibitor for styrene dehydrogenation units
Quinone methide derivatives such as 4-benzylidene-2,6-di-tert-butyl-cyclohexa-2,5 dienone are used to inhibit styrene monomer polymerization in the dehydrogenator portion of a styrene monomer...
|
|
|
7125483 |
Corrosion control in olefin production plants
A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese,...
|
|
|
7125475 |
Nitrosophenols and C-nitrosoanilines as polymerization inhibitors
Inhibitor blends that include both nitrosophenols and nitrosoanilines, optionally in combination with air or oxygen, reduce the premature polymerization of ethylenically unsaturated monomers....
|
|
|
7122113 |
Method for solubilising asphaltenes in a hydrocarbon mixture
Method for solubilising asphaltenes in an asphaltenes-containing hydrocarbon mixture by adding thereto an effective amount of a dendrimeric compound, and a hydrocarbon mixture comprising, in...
|
|
|
7122112 |
Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil
A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II), wherein R5 is C1–C70 difunctional alkyl or C6–C14 difunctional aryl, and R3and R4 independently are...
|
|
|
7097759 |
Carbonyl, thiocarbonyl or imine containing compounds as asphaltene dispersants in crude oil
A method for dispersing asphaltenes in a petroleum product by adding to the petroleum product 0.001% to 20% of at least one compound having formula (V) wherein R14 is C15–C21 alkyl. In addition t...
|
|
|
7022220 |
C-nitrosoaniline compounds and their blends as polymerization inhibitors
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor...
|
|
|
6986839 |
Method for prevention of fouling in basic solution by inhibiting polymerization and solubilizing deposits using amino acids
A method for inhibiting and dissolving the deposits formed on caustic or alkaline scrubbers used in scrubbing acidic gases such as carbon dioxide, hydrogen sulfide, which are formed during the...
|
|
|
6926820 |
Inhibition of viscosity increase and fouling in hydrocarbon streams including unsaturation
A method of inhibiting fouling and viscosity increase in hydrocarbon streams including ethylenically unsaturated monomers is disclosed. The method includes the step of adding to the hydrocarbon...
|
|
|
6867262 |
Grafted polymers as gas hydrate inhibitors
Graft polymers are used as gas hydrate inhibitors.
|
|
|
6860985 |
Process for increasing yield in coking processes
The invention relates to a method for improving yield in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for regenerating filters...
|
|
|
6852213 |
Phosphorus-sulfur based antifoulants
This invention is directed to a method of inhibiting fouling of heat transfer surfaces in contact with petroleum or hydrocarbon feedstocks comprising contacting the heat-transfer surfaces with an...
|
|
|
6841061 |
Antigelling agent for hydrocarbon mixture containing conjugated diene and method of preventing clogging of apparatus for separating and purifying the mixture
An Anti-gelling agent for a hydrocarbon mixture containing a conjugated diene, which comprises (a) at least one compound selected from the group consisting of compounds having an NO radical in the...
|
|
|
6830677 |
Process for reducing coke agglomeration in coking processes
In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method...
|
|
|
6772771 |
Decoke enhancers for transfer line exchangers
In a steam cracking operation the formation of coke is a problem which needs to be overcome. While significant work has been done on decoking of furnaces little work has been done regarding...
|
|
|
6630428 |
Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use
The use of high flash point, low vapor pressure compositions for injection into, and coating of, gas and oil wells and surrounding underground hydrocarbon bearing formations and processing...
|
|
|
6602483 |
Increasing production in hydrocarbon conversion processes
A improved hydrocarbon conversion process, comprising applying a plating, cladding, paint or other coating to at least a portion of a hydrocarbon conversion reactor system which is used to convert...
|
|
|
6585883 |
Mitigation and gasification of coke deposits
A method for removing or reducing coke deposits in a refinery reactor unit utilizing a reactant gas, preferably steam, and catalyst.
|
|
|
6544406 |
Ion implantation of antifoulants for reducing coke deposits
The formation of coke on metal surfaces exposed to hydrocarbons in a thermal cracking process is reduced by ion implantation of selected antifoulants into such metal surfaces; the antifoulants...
|
|
|
6482311 |
Methods for suppression of filamentous coke formation
Materials and methods for inhibiting the formation of filamentous coke on heated metal surfaces. Organoselenium compounds, including diarylselenides, diaryldiselenides, alkylarylselenides, and...
|
|
|
6471852 |
Phase-transfer catalyzed destruction of fouling agents in petroleum streams
The present invention is a process to reduce the fouling of equipment for processing petroleum feedstreams. The fouling is reduced by reducing the presence of peroxides and hydroperoxides in the...
|
|
|
6464858 |
Method for improving the yield of heavy hydrocarbons in a thermal cracking process
The incremental yield of hydrocarbons having five or more carbon atoms in a cracked product from a thermal cracking process is increased by contacting or treating the tubes of a thermal cracking...
|