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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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7578929 |
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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7560020 |
Deasphalting tar using stripping tower
Tar is contacted with stripping agent, such as steam or tail gas, in a stripping tower. A product comprising deasphalted tar is recovered as overheads and a product comprising heavy tar is...
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7491315 |
Dual riser FCC reactor process with light and mixed light/heavy feeds
A dual riser FCC process is disclosed wherein first and second hydrocarbon feeds ( 5, 6 ) are supplied to the respective first and second risers ( 2, 4 ) to make an effluent rich in ethylene,...
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7465388 |
Method for processing hydrocarbon pyrolysis effluent
A method is disclosed for treating the effluent from a hydrocarbon pyrolysis process unit to recover heat and remove tar therefrom. The method comprises passing the gaseous effluent to at least one...
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7453019 |
Conversion process
The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock...
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7396449 |
Olefin production utilizing condensate feedstock
A method for utilizing natural gas condensate as a feedstock for an olefin production plant wherein the feedstock is subjected to vaporization and separation conditions that remove light...
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7374661 |
Thermal cracking
A method for thermally cracking a hydrocarbonaceous feed material using a combustion fuel fired furnace wherein at least part of the combustion fuel employed in the furnace is syngas.
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7375256 |
Catalytic conversion process for producing light olefins with a high yield petroleum hydrocarbons
A catalytic conversion process for producing light olefins with a high yield from petroleum hydrocarbons, which comprises the steps of contacting a pre-heated petroleum hydrocarbons feedstock with...
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7317133 |
Process for enhanced olefin production
The present invention relates to a process for the production of light weight olefins comprising olefins having from 2 to 3 carbon atoms per molecule from an oxygenate feedstock. The process...
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7312370 |
FCC process with improved yield of light olefins
An FCC process for obtaining light olefins comprises contacting a hydrocarbon feed stream with blended catalyst comprising regenerated catalyst and coked catalyst. The catalyst has a composition...
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7312371 |
Steam cracking of hydrocarbon feedstocks containing non-volatile components and/or coke precursors
A process for cracking a heavy hydrocarbon feedstock containing non-volatile components and/or coke precursors, wherein a stripping agent is added to the feedstock to form an enhanced hydrocarbon...
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7297833 |
Steam cracking of light hydrocarbon feedstocks containing non-volatile components and/or coke precursors
A process for cracking a light hydrocarbon feedstock containing non-volatile components and/or coke precursors, wherein a heavy hydrocarbon feedstock is added to the contaminated light hydrocarbon...
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7288690 |
Method and apparatus for steam cracking hydrocarbons
A method and apparatus for steam cracking hydrocarbons, which method consists in heating a mixture of hydrocarbons and steam to a desired temperature that is high enough to crack the hydrocarbons...
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7285697 |
Reduction of total sulfur in crude and condensate cracking
A process for cracking hydrocarbon feedstock comprising at least one sulfur-containing compound comprising: heating the feedstock and a peroxide-containing compound, mixing the heated feedstock and...
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7279610 |
Method for the preparation of lower olefines by steam cracking
A method for the preparation of lower olefins by steam cracking, wherein the feed containing heavy hydrocarbons obtained by Fischer-Tropsch synthesis is subjected to steam cracking in a naphtha...
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7235172 |
Olefin production from steam cracking using process water as steam
The invention includes a process for making olefins. In one embodiment, the process comprises producing steam from a process water comprising organic compounds, wherein the process water comprises...
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7223897 |
Process for the production of olefins
A process for the production of an olefin from a hydrocarbon by autothermal cracking, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a...
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7145051 |
Combined oxydehydrogenation and cracking catalyst for production of olefins
A catalyst is provided comprising (1) at least one solid acid component, and (2) at least one metal-based component comprised of one or more element from Groups 1–3, one or more element from...
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7135602 |
Method and apparatus for selective deep catalytic cracking of hydrocarbons
Provided herein is a method and apparatus for selective deep catalytic cracking of petroleum naphthas or other hydrocarbon feedstocks. The feed comprising the hydrocarbons to be cracked and steam,...
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7090765 |
Process for cracking hydrocarbon feed with water substitution
A process for treating hydrocarbon feed in a furnace, the process comprising: (a) heating hydrocarbon feed, (b) adding water to the heated feed, (c) adding dilution steam to the heated feed to form...
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7049477 |
Process for pyrolysis of hydrocarbon
The present invention relates to a process for pyrolysis of hydrocarbons for olefin preparation, and particularly to a process for pyrolysis of hydrocarbons comprising pyrolyzing paraffin...
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6979755 |
Olefin production from low sulfur hydrocarbon fractions
Provided is a process for converting methane at a remote natural gas site into ethylene and other products. Methane is converted into syngas which is converted into a low-sulfur liquid hydrocarbon...
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6953872 |
Process of producing C2 to C4 olefins from a feed mixture containg C4 to C8 olefins
This invention relates to a process of producing C2- to C4-olefins from steam and a feed mixture containing C4- to C8-olefins, wherein the feed mixture containing steam is introduced into a reactor...
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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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6888038 |
Enhanced production of light olefins
A method for reducing the formation of undesired heavy hydrocarbons when catalytically cracking a heavy olefin containing feed stock to a light olefin product by employing an oxygen containing...
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6844476 |
Process to control conversion of C4+ and heavier stream to lighter products in oxygenate conversion reactions
A method for converting heavy olefins present in a product stream exiting a first reaction zone into light olefins and carbonaceous deposits on a catalyst without separation of the heavy olefins...
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6835863 |
Catalytic production of light olefins from naphtha feed
A C 4 + naphtha hydrocarbon feed is converted to light olefins and aromatics, by contacting the feed with a catalyst containing ZSM-5 and/or ZSM-11, a substantially inert matrix material such as...
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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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6803494 |
Process for selectively producing propylene in a fluid catalytic cracking process
A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a...
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6791002 |
Riser reactor system for hydrocarbon cracking
A riser reactor system for conversion of hydrocarbon feedstock to ethylene and propylene is described. The riser reactor system prevents riser reactors with a plurality of inlet ports for feeding...
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6734331 |
Process for producing olefins and diolefins
A process for producing olefins and diolefins. A flow of gas is compressed with a prime mover in a near adiabatic path. Resistance to the flow within the adiabatic path causes a temperature rise...
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6696614 |
Catalyst for steam cracking reactions and related preparation process
Catalyst for steam cracking reactions consisting of pure mayenite having the general formula: 12CaO.7Al 2 O 3 having an X-ray diffraction spectrum as indicated in Table I, obtained with a...
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6677496 |
Process for the coproduction of benzene from refinery sources and ethylene by steam cracking
A process for the coproduction of purified benzene and ethylene is provided. The method comprises providing a first mixture comprising benzene, toluene, and one or more C 6 to C 7 non-aromatics...
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6652737 |
Production of naphtha and light olefins
Disclosed is a method for treating naphtha. The method comprises providing naphtha feed, and the naphtha feed comprises naphthene ring-containing compounds. The naphtha feed is contacted with a...
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6632351 |
Thermal cracking of crude oil and crude oil fractions containing pitch in an ethylene furnace
A crude oil feedstock or crude oil fractions containing pitch feedstock is pyrolyzed in a pyrolysis furnace.
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6548725 |
Process for manufacturing olefins
A catalyst and an improved process for producing olefins by catalytic naphtha cracking are described. The process provides relatively higher yields over a commercially important range of naphtha...
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6500404 |
Zeolite ITQ-3
The present invention refers to a crystalline material of zeolitic nature named ITQ-3 characterized by its characteristic X-ray diffraction pattern and its microporous properties, to the process of...
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6497809 |
Method for prolonging the effectiveness of a pyrolytic cracking tube treated for the inhibition of coke formation during cracking
Process for prolonging the effectiveness of a pyrolytic cracking tube which has been treated with an antifoulant for inhibiting the formation of coke during the cracking of hydrocarbons. The...
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6488839 |
Process and furnace for steam-cracking a feedstock that contains ethane and/or propane
A steam-cracking process with a very high degree of severity of a feedstock that comprises at least 20% by weight of hydrocarbons of the group that is formed by ethane and propane in which the...
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6455750 |
Process for selectively producing light olefins
The invention is related to a catalyst and a process for selectively producing light (i.e., C 2 -C 4 ) olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream...
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6441263 |
Ethylene manufacture by use of molecular redistribution on feedstock C3-5 components
A process for preparing an ethylene-rich composition from a C 3-5 paraffinic feedstock is described. The C 3-5 paraffinic feedstock is subjected to molecular redistribution via dehydrogenation to...
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6429348 |
Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon feedstock
The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst...
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6420621 |
Optimized process for the preparation of olefins by direct conversion of multiple hydrocarbons
A process for hydrocarbon conversion to prepare lower olefins such as ethylene, propylene, etc., and light aromatics by bringing hydrocarbons into contact with a solid granular catalyst. In order...
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6407301 |
Ethylene production by steam cracking of normal paraffins
An adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit is presented. The feed stream to the overall unit is...
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6358399 |
Process for separating ethane and ethylene by solvent absorption and hydrogenation of the solvent phase
A process and a device for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent ( 1 ) is absorbed in an absorption column ( 7 ) by a cooled solvent ( 9...
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6340429 |
Process and device for separating ethane and ethylene from a steam-cracking effluent by solvent absorption and hydrogenation of the solvent phase
A process for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent ( 1 ) is absorbed in an absorption column by a cooled solvent ( 9 ). At the bottom of...
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6315890 |
Naphtha cracking and hydroprocessing process for low emissions, high octane fuels
The invention is related to a two step process wherein the first step comprises cracking an olefinic naphtha resulting in a cracked product having a diminished total concentration of olefinic...
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6313366 |
Process for selectively producing C3 olefins in a fluid catalytic cracking process
A process for producing propylene from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to...
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6303842 |
Method of producing olefins from petroleum residua
Olefins may be produced by thermally steam cracking residuum containing a short residuum having a boiling point range greater than 565° C. wherein at least 3 weight percent of the short residuum...
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