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7617701 |
Process and installation for providing a fluid mixture containing at least 10% carbon monoxide
In a process for producing a mixture containing at least 10% carbon monoxide ( 73 ) by cryogenic separation of a feed gas containing at least carbon monoxide, hydrogen and methane, the feed gas ( 1...
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7565815 |
Natural gas liquefaction
A process for liquefying natural gas in conjunction with producing a liquid stream containing predominantly hydrocarbons heavier than methane is disclosed. In the process, the natural gas stream to...
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7458232 |
Method and installation for producing treated natural gas, a C3+ hydrocarbon cut and an ethane rich stream
This method comprises the cooling of the initial natural gas and its introduction into a column for recovering C 2 + hydrocarbons. It comprises the recovery of the top stream from the column to...
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7249469 |
Method for separating a multicomponent stream
This invention relates to a method for separating a stream having benzene, toluene and alkyl benzene, said method comprising: feeding the stream into a first distillation column, wherein the stream...
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6907752 |
Cryogenic liquid natural gas recovery process
A process for the recovery of natural gas liquids (NGL) (ethane, ethylene, propane, propylene and heavier hydrocarbons) from liquefied natural gas (LNG) is disclosed. The LNG feed stream is split...
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6758060 |
Separating nitrogen from methane in the production of LNG
Substantially all the nitrogen is removed from natural gas during the production of LNG, without producing mixed nitrogen/methane streams needing recycle and further processing, or requiring...
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6755965 |
Ethane extraction process for a hydrocarbon gas stream
A process for ethane extraction from a gas stream based on turboexpansion and fractionation with no mechanical refrigeration is provided. The feed gas is sweetened and dehydrated by a conventional...
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6601406 |
Methods and apparatus for high propane recovery
Methods and configurations for improved propane recovery plant employ an absorber column, and a deethanizer column with an overhead condenser that produces a reflux condensate. The reflux...
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6581410 |
Low temperature separation of hydrocarbon gas
The invention provides a process for the separation of a heavier hydrocarbon fraction from a gaseous feed comprising a mixture of hydrocarbons, which process comprises subjecting the feed to a...
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6516631 |
Hydrocarbon gas processing
A cryogenic natural gas liquids recovery process which includes the use of a demethanizer and a deethanizer includes a step of recycling a portion of the deethanizer overhead to the demethanizer.
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6405561 |
Gas separation process
A process for separating a feed gas stream containing methane, C 2 components, C 3 components, and heavier components into a volatile gas stream containing a major portion of the methane and C 2 ...
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6347533 |
Hydraulically balanced fully thermally coupled system
A fully thermally coupled distillation structure designed to overcome hydraulic limitations in the past has been revealed for separating a multi-component feed stream into three product streams....
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6286335 |
Processes for multicomponent separation
An efficient and easier to operate distillation process separates mixtures containing three of more components into streams enriched in one of the components. The invention converts a two-way...
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6269657 |
Process and apparatus for separating mixtures of hydrogen and carbon monoxide
Hydrogen and carbon monoxide are separated from a condensate-containing gaseous mixture thereof by using (a) a "first" stripping column (8) to remove the hydrogen content of the CO-loaded methane...
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6125653 |
LNG with ethane enrichment and reinjection gas as refrigerant
The present invention comprises a process for producing liquefied natural gas from the methane that is produced during natural gas liquids extraction. The process includes distilling the feed to...
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6116050 |
Propane recovery methods
The present invention is directed to methods for separating and recovering propane, propylene and heavier hydrocarbons, i.e., the C 3 + hydrocarbons, from a gas feed, e.g., raw natural gas or a...
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6106674 |
Operable and efficient distillation schemes for multicomponent separations
The present invention teaches an efficient and easier to operate distillation system to separate mixtures containing three or more components into streams enriched in one of the components. In this...
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6082134 |
Process and apparatus for separating a gaseous mixture
Hydrogen (4), and carbon monoxide (21) are separated from a gaseous mixture thereof, typically a mixture of essentially hydrogen, carbon monoxide and methane (1) using liquid methane (3) to...
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6021647 |
Ethylene processing using components of natural gas processing
Disclosed are methods of and means for producing ethylene by chilling the ethylene plant demethanizer heat exchange train with a refrigerated stream or streams from a cryogenic natural gas plant...
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5956971 |
Process for liquefying a natural gas stream containing at least one freezable component
This invention relates to a process for producing pressurized liquid rich in methane from a multi-component feed stream containing methane and a freezable component having a relative volatility...
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5918481 |
Process for separating hydrogen fluoride from fluorocarbons
The invention provides a method for separating fluorocarbons from mixtures of fluorocarbon and hydrogen fluoride. In particular, the invention provides a method for separating fluorocarbons, such...
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5806339 |
Multiple effect and distributive separation of isobutane and normal butane
The present invention is an enhancement of the prior art use of partial effects and component distribution regarding NGL fractionation, especially relating to the separation of propane, isobutane,...
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5791161 |
Low pressure deethanizer
The present invention is a set of improvements in deethanizing and depropanizing fractionation steps in NGL processing. The several embodiments of the present invention apply component distribution...
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5779863 |
Perfluorocompound separation and purification method and system
Provided is a novel method and system for separating and purifying perfluorocompounds (PFCs). The method comprises the steps of: (a) introducing a perfluorocompound-containing gas stream into a...
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5685171 |
Method of separating organic vapors from gaseous media
A method of separating from gaseous media, such as air or technical gases, organic vapors by substantially isothermally raising the pressure of the media and subjecting them to cooling in a cold...
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5673571 |
Deethanizer/depropanizer sequences with thermal and thermo-mechanical coupling and component distribution
The present invention is a set of improvements in deethanizing and depropanizing fractionation steps in NGL processing. The several embodiments of the present invention apply component distribution...
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5452581 |
Olefin recovery method
A method is described for recovering olefins by condensation from the reaction effluent stream from a cracking furnace containing olefins and hydrogen wherein a membrane separator is employed to...
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5421167 |
Enhanced olefin recovery method
An enhanced method is disclosed for recovering olefins from a cracking furnace effluent stream in an olefins plant. In accordance with this method, a liquid hydrocarbon stream, preferably obtained...
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5253479 |
Method and apparatus for recovery of ethylene and propylene from gas produced by the pyrolysis of hydrocarbons
A method and an apparatus for the largest recovery of ethylene and propylene from gas produced by the pyrolysis of hydrocarbons, wherein any liquid current produced by the fractional condensation...
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5152148 |
Propane removal process
In a process for removing propane from a mixed liquid hydrocarbon stream, the depropanizer bottoms from a depropanizer are utilized to reflux the de-ethanizer. The process includes flowing the...
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5090977 |
Sequence for separating propylene from cracked gases
A process sequence for treating cracked gases of heavy feedstocks which preferentially produces propylene to the exclusion of propane, butanes and butenes. The process eliminates the need for a...
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4976849 |
Fractionation process for gaseous hydrocarbon mixtures with a high acid gas content
A fractionation process for gaseous hydrocarbon mixtures of high acid gas content is described, for separating at least a fraction containing ethane, propane and heavier hydrocarbons, a fraction...
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4888035 |
Process and apparatus for separation of a gaseous mixture
The disclosure relates to a process as well as an apparatus for the separation of a gaseous mixture containing essentially hydrogen, methane and carbon monoxide, wherein the gaseous mixture is...
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4759786 |
Separation of gaseous mixtures
An incoming stream of gas mixture typically comprising methane and up to 12% by volume of carbon dioxide is subjected to rectification in a first column to form a carbon dioxide depleted fraction...
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4710213 |
Process for separating CO.sub.2 from a gaseous mixture
A process for the separation of CO 2 from gases containing light hydrocarbons and a relatively high proportion of CO 2 comprises a two stage fractionation procedure. In a first fractionating...
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4695304 |
Separation of CO.sub.2 from a gaseous mixture
For the separation of CO 2 from a gaseous mixture containing CO 2 and C 1 -C 6 hydrocarbons, the gaseous mixture to be fractionated is separated in a first fractionating stage into an overhead...
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4401450 |
Economic recovery of ethylene and/or propylene from low concentration feeds
C 2 -C 3 olefins are recovered from a low concentration gaseous feedstream, e.g. a Fischer-Tropsch waste gas. In a first process stage, the weight percent concentration of the olefins is enriched...
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4157905 |
Heat-exchanger trays and system using same
A novel distillation tray useful as a horizontally disposed internal for a distillation column, especially a cryogenic distillation column, has a set of parallel horizontal pipes spaced from one...
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4012212 |
Process and apparatus for liquefying natural gas
There is disclosed a novel process and apparatus for liquefying a hydrocarbon gas under a pressure greater than the critical pressure thereof wherein the gas is first expanded to below the critical...
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3915680 |
Separation of low-boiling gas mixtures
A process for prefractionation of a feed mixture comprised of at least two components prior to introduction to the main fractionation zone, wherein substantially liquid feed maintained at pressures...
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3849096 |
FRACTIONATING LNG UTILIZED AS REFRIGERANT UNDER VARYING LOADS
Process for recovering heavier components from liquefied natural gas during regasification thereof to provide a send-out gas at varying rates in which the heavier components are to be treated in an...
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3446870 |
SEPARATION OF PYROLYSIS GASES
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3313724 |
Process for the separation of normally gaseous hydrocarbon mixtures
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3309882 |
Employing bottoms of a second fractionator as a refrigerant medium for first fractionator overhead
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3163511 |
Water removal and low temperature separation of hydrocarbon mixtures
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3119677 |
Separation of gases
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3111402 |
Hydrocarbon separation
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3028332 |
Liquid recovery from an originally vaporous mixture
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2952983 |
Processing of hydrocarbon gases
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