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8163167 |
Process for the deep desulfurization of heavy pyrolysis gasoline
A process for the deep desulfurization of a heavy pyrolysis gasoline to very low levels of organic sulfur, e.g., 30 ppmv or less, with minimal octane number loss through aromatics saturation. The...
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8158840 |
Process and apparatus for cooling liquid bottoms from vapor/liquid separator during steam cracking of hydrocarbon feedstocks
A process and apparatus for steam cracking liquid hydrocarbon feedstocks utilizes a vapor/liquid separation apparatus to treat heated vapor/liquid mixtures to provide an overhead of reduced residue...
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8152993 |
Ethylene furnace radiant coil decoking method
Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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8002951 |
Furnace and process for incinerating a decoke effluent in a twin-tube-plane furnace
A furnace and method for the cracking of hydrocarbons. The furnace includes a radiant firebox, the radiant firebox comprising a furnace floor having a centerline, a plurality of decoke effluent...
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7951340 |
Mitigation of refinery process unit fouling using high-solvency-dispersive-power (HSDP) resid fractions
Atmospheric and/or vacuum resid fractions of a high solvency dispersive power (HSDP) crude oil are added to a blend of crude oil to prevent fouling of crude oil refinery equipment and to perform...
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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...
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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...
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7919058 |
High-solvency-dispersive-power (HSDP) crude oil blending for fouling mitigation and on-line cleaning
A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible and/or near-incompatible oils to proactively address the potential for fouling heat exchange equipment. The...
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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...
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7901564 |
Mitigation of refinery process unit fouling using high-solvency-dispersive-power (HSDP) resid fractions
Atmospheric and/or vacuum resid fractions of a high solvency dispersive power (HSDP) crude oil are added to a blend of crude oil to prevent fouling of crude oil refinery equipment and to perform...
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7867321 |
Process for disengaging solid and gaseous particles in FCC processes with reduced coke formation in disengager vessels
An improved cyclone system for disengaging solid and gaseous particles in fluid catalytic cracking (FCC) processes with reduced coke formation in disengager vessels, without favoring release of the...
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7837855 |
High-solvency-dispersive-power (HSDP) crude oil blending for fouling mitigation and on-line cleaning
A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible and/or near-incompatible oils to proactively address the potential for fouling heat exchange equipment. The...
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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...
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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...
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7794587 |
Method to alter coke morphology using metal salts of aromatic sulfonic acids and/or polysulfonic acids
A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of oil dispersible or oil soluble metal salts of aromatic sulfonic acids and/or...
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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.
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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...
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7726871 |
Vibration actuation system with independent control of frequency and amplitude
Vibrational energy generated with a pneumatic vibrator is controlled to independently adjust the amplitude and the frequency. A mechanical resonator is used to adjust the frequency. The controlled...
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7713727 |
Process for improving enzymatic degumming of vegetable oils and reducing fouling of downstream processing equipment
A process controls enzymatic degumming characteristics which cause fouling of post-reactor equipment of industrial scale processing of edible oils. An anti-fouling agent including an organic or...
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7686940 |
Acoustic agglomeration to reduce fouling in thermal conversion processes
This invention relates to a process for reducing fouling of equipment used in fluidized bed thermal conversion processes such as fluid coking and FLEXICOKING™. Acoustic energy is used to a...
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7648626 |
Process for cracking asphaltene-containing feedstock employing dilution steam and water injection
A process for reducing the rate of increase in pressure drop across a furnace convection section, the furnace convection section having a temperature profile. The process includes the steps of...
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7625480 |
Pyrolysis furnace feed
The invention relates to a method for processing asphaltene-containing feed to a pyrolysis furnace by raising the final boiling point of the feed/steam mixture to the pyrolysis furnace to ensure...
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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...
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7597797 |
System and method for on-line spalling of a coker
Coker heater operation is improved by on-line spalling of coker heater pipes. In one embodiment an off-line pipe is added to the on-line coker heater pipes. When an on-line pipe is to be spalled,...
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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...
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7354660 |
High performance alloys with improved metal dusting corrosion resistance
Alloy compositions which are resistant to metal dusting corrosion are provided by the present invention. Also provided are methods for preventing metal dusting on metal surfaces exposed to carbon...
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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...
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7160437 |
Method for determining the source of fouling in thermal conversion process units
The present invention relates to a method for determining the source of fouling in petroleum thermal conversion process units. More particularly, the invention distinguishes whether fouling occurs...
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7156979 |
Thermal cracking process using tubes, pipes, and coils made of novel stainless steel matrix
A thermal cracking process using tubes, pipes, and coils made of. An outermost surface covering not less than 55% of stainless steel, said surface having a thickness from 0.1 to 15 microns and...
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7138047 |
Process for steam cracking heavy hydrocarbon feedstocks
A process for feeding or cracking heavy hydrocarbon feedstock containing non-volatile hydrocarbons comprising: heating the heavy hydrocarbon feedstock, mixing the heavy hydrocarbon feedstock with a...
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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...
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7097758 |
Converting mist flow to annular flow in thermal cracking application
A process to increase the non-volatile removal efficiency in a flash drum in the steam cracking system. The gas flow from the convection section is converted from mist flow to annular flow before...
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7077949 |
FCC reactor vessel
A fluidized catalytic cracking reactor vessel having at its upper end means to separate catalyst particles from an effluent of a dilute phase fluidized catalytic cracking reactor riser, which...
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7029570 |
Disaggregation of asphaltenes in incompatible petroleum oil mixtures
The thermal decomposition of Athabasca asphaltene at relatively low (<350° C.) temperatures is believed to proceed by elimination of groups situated on peripheral sites of the asphaltene. More ...
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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...
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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...
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6908543 |
Method for retarding fouling of feed heaters in refinery processing
A method of minimizing the formation of polymers and other heavy molecular weight products upon heating of a hydrocarbon stream in a hydroconversion process is described. Specifically, sufficient...
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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...
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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...
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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...
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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...
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6830676 |
Coking and carburization resistant iron aluminides for hydrocarbon cracking
A cracking tube includes a lining of a fouling resistant and corrosion resistant iron aluminide alloy. The iron aluminide alloy can include 14-32 wt. % Al, at least 2 vol. % transition metal...
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6824672 |
Use of austenitic stainless steels in applications requiring anti-coking properties
An austenitic stainless steel with a composition comprising: at most 0.15% of C;2% to 10% of Mn;at most 2% of Ni;at most 4% of Cu;0.1% to 0.4% of N;10% to 20% of Cr;at most 1% of Si;at most 3% of...
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