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7526926 |
Method for efficient nonsynchronous LNG production
A drive system for a refrigeration compressor such as is used in a natural gas liquefaction plant, allowing the desired compressor speed and maximum turbine efficiency to be maintained throughout...
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7437889 |
Method and apparatus for producing products from natural gas including helium and liquefied natural gas
The present invention relates to a process and apparatus for producing crude helium, liquefied natural gas product, and synthesis gas from natural gas. A natural gas comprising helium and methane...
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7294327 |
Multi-stage cryogenic acid gas removal
A relatively simple and energy efficient multiple stage cryogenic process for the purification of a hydrogen-rich stream by the removal of acid gases, mainly CO 2 and H 2 S, by method of...
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7237407 |
Process and plant for the simultaneous production of an liquefiable natural gas and a cut of natural gas liquids
This process includes the following steps:
(a) the feed natural gas ( 101 ) is introduced into a first distillation column ( 31 ) which produces, as top product, a pretreated natural gas (...
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7185514 |
Method and installation for fractionating gas derived from pyrolysis of hydrocarbons
The invention relates to a method for fractionating a gas produced by the pyrolysis of hydrocarbons ( 1 ) for the recovery of C 2 and higher hydrocarbons, in particular ethylene and ethane,...
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7071236 |
Natural gas liquefaction and conversion method
The natural gas flowing in through line 1 is cooled, then expanded in turbine T 1 . The liquid at the bottom of drum D 2 is the liquefied natural gas. The gas at the top of drum D 2 is...
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6931889 |
Cryogenic process for increased recovery of hydrogen
A cryogenic process and apparatus to recover hydrogen from a fuel gas stream. The process can be stand alone or can be combined with existing processes, such as recovery of LPG from a fuel gas...
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6743829 |
Integrated processing of natural gas into liquid products
An integrated process for producing LNG and GTL products is provided comprising cooling natural gas in at least one cooling step so as to provide a cooled natural gas stream; processing the cooled...
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6735979 |
Process for pretreating a natural gas containing acid gases
A process for pretreating a very acid natural gas containing a substantial amount of hydrogen sulfide (H 2 S), possibly combined with carbon dioxide (CO 2 ), includes at least a stage wherein the...
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6658893 |
System and method for liquefied petroleum gas recovery
An improved process for recovery of liquefied petroleum gas from a raw natural gas feed stream, capable of achieving ultra high propane recovery yields, thereby separating substantially all of the...
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6637238 |
Compression apparatus for gaseous refrigerant
An apparatus for compressing gaseous refrigerant for use in a refrigeration circuit of a liquefaction plant, which refrigeration circuit has an inlet, a first outlet for refrigerant at low...
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6564578 |
Self-refrigerated LNG process
The present invention is directed to a process for producing LNG by directing a feed stream comprising natural gas to a cooling stage that (a) cools the feed stream in at least one cooling step...
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6560988 |
Unloading pressurized liquefied natural gas into standard liquefied natural gas storage facilities
Systems and methods are provided for delivering pressurized liquefied natural gas to an import terminal equipped with containers and vaporization facilities suitable for conventional LNG.
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6530241 |
Apparatus for reliquefying compressed vapour
An apparatus for use on board ship to reliquefy a compressed vapour employs pre-assemblies of components. The reliquefaction is effected in a closed cycle in which a working fluid is compressed in...
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6449982 |
Process for partial liquefaction of a fluid containing hydrocarbons, such as natural gas
A process for partial liquefaction of a fluid G at least partially formed from hydrocarbons simultaneously produces: a fraction that is liquid after expansion; a gas fraction representing at least...
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6449984 |
Process for liquefaction of and nitrogen extraction from natural gas, apparatus for implementation of the process, and gases obtained by the process
A process for liquefaction of and nitrogen extraction from natural gas, an installation for implementation of the process, and gases obtained by this process. In the process, a first top fraction...
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6438994 |
Method for providing refrigeration using a turboexpander cycle
A method for generating refrigeration using a turboexpander or reverse Brayton cycle which can more efficiently generate refrigeration especially to cryogenic temperatures using a defined...
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6425264 |
Cryogenic refrigeration system
A cryogenic refrigeration system wherein refrigeration is provided to a heat load by a warming multicomponent refrigerant fluid recirculating in a refrigeration circuit and by cryogenic liquid...
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6425263 |
Apparatus and process for the refrigeration, liquefaction and separation of gases with varying levels of purity
A process for the separation and liquefaction of component gasses from a pressurized mix gas stream is disclosed. The process involves cooling the pressurized mixed gas stream in a heat exchanger...
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6415628 |
System for providing direct contact refrigeration
A method and apparatus for providing direct contact refrigeration to a heat source wherein refrigeration is generated using a recirculating defined multicomponent refrigerant fluid, and transferred...
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6412302 |
LNG production using dual independent expander refrigeration cycles
A process for producing a liquified natural gas stream that includes cooling at least a portion of a pressurized natural gas feed stream by heat exchange contact with first and second expanded...
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6389844 |
Plant for liquefying natural gas
Plant for liquefying natural gas comprising one pre-cooling heat exchanger ( 2 ) having an inlet ( 13 ) for natural gas and an outlet ( 14 ) for cooled natural gas, a pre-cooling refrigerant...
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6378330 |
Process for making pressurized liquefied natural gas from pressured natural gas using expansion cooling
This invention relates to process for liquefying a pressurized gas stream rich in methane. In a first step of the process, a first fraction of a pressurized feed stream, preferably at a pressure...
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6370910 |
Liquefying a stream enriched in methane
Liquefying a stream enriched in methane comprising a) supplying a natural gas stream to scrub column, removing in the scrub column heavier hydrocarbons from the natural gas stream to obtain a...
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6354105 |
Split feed compression process for high recovery of ethane and heavier components
A process for enhancing recovery of ethylene, ethane and heavier components using a cryogenic distillation column which involves dividing the feed gas into a first gaseous stream and a main gaseous...
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6347531 |
Single mixed refrigerant gas liquefaction process
A method of gas liquefaction wherein the refrigeration to cool and liquefy an essentially water-free feed gas is provided by a single recirculating mixed refrigerant cycle in which refrigeration is...
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6347532 |
Gas liquefaction process with partial condensation of mixed refrigerant at intermediate temperatures
Method of producing liquefied natural gas (LNG) whereby refrigeration for cooling and liquefaction is provided by a mixed refrigerant system precooled by another refrigeration system. At least one...
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6333445 |
Cryogenic separation process for the recovery of components from the products of a dehydrogenation reactor
The olefin-hydrogen effluent vapor stream from a dehydrogenation process is separated by a cryogenic separation method utilizing a cryogenic separation system. The method does not require external...
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6311516 |
Process and apparatus for C3 recovery
An improved process for separating a hydrocarbon bearing feed gas containing methane and lighter, C 2 (ethylene and/or ethane), C 3 (propylene and/or propane) and heavier components into a...
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6301927 |
Autorefrigeration separation of carbon dioxide
Carbon Dioxide is separated from other gases using autorefrigeration. In general, a feed gas containing Carbon Dioxide is compressed (100), and then expanded (250) to produce work. Carbon Dioxide...
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6298688 |
Process for nitrogen liquefaction
A process for gas liquefaction, particularly nitrogen liquefaction, which combines the use of a nitrogen autorefrigeration cooling cycle with one or more closed-loop refrigeration cycles using two...
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6276167 |
Refrigeration production
A refrigeration method using a non-aqueous, non-hydrocarbon refrigerant to contact a hydrocarbon composition comprising a hydrocarbon vapor phase and a hydrocarbon liquid phase in order to lower...
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6272882 |
Process of liquefying a gaseous, methane-rich feed to obtain liquefied natural gas
The present invention relates to a process of liquefying a gaseous, methane-rich feed to obtain a liquefied product by supplying the gaseous, methane-rich feed at elevated pressure to a first tube...
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6223557 |
Process for removing a volatile component from natural gas
A process is disclosed to remove at least one high volatility component, such as nitrogen, from a pressurized natural gas to produce pressurized liquefied natural gas that is lean in nitrogen and...
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6220053 |
Cryogenic industrial gas liquefaction system
A system for liquefying industrial gas wherein industrial gas is compressed to two levels using a first and a second compression system and then is processed in a heat exchanger having horizontally...
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6209350 |
Refrigeration process for liquefaction of natural gas
A process is disclosed for conveying gas stream rich in methane, such as natural gas. In the first step of the process, gas is supplied to a pipeline at an entry pressure that is substantially...
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6199403 |
Process for separating a multi-component pressurizied feed stream using distillation
A process is disclosed to remove a high-volatility component, such as nitrogen, from a feed stream rich in methane to produce a product substantially free of the high-volatility component. The feed...
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6192705 |
Reliquefaction of pressurized boil-off from pressurized liquid natural gas
A process is disclosed for reliquefying boil-off gas produced by pressurized liquid natural gas. In this process, refrigeration duty is provided to a heat exchanger by means of a refrigeration...
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6105391 |
Process for liquefying a gas, notably a natural gas or air, comprising a medium pressure drain and application
The invention is a process for liquefying a compound A from a mixture comprising at least compound A and at least one compound B. The mixture is available at a pressure P1 with separation of the at...
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6105389 |
Method and device for liquefying a natural gas without phase separation of the coolant mixtures
A method allowing a gaseous mixture such as a natural gas to be liquefied by using a first compressed coolant mixture M 1 , at least partially condensed by cooling with the aid of an external...
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6105388 |
Multiple circuit cryogenic liquefaction of industrial gas
A method for more efficiently cooling and liquefying industrial gas wherein refrigeration for the cooling and liquefaction is generated using first and second defined multicomponent refrigerant...
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6085547 |
Simple method and apparatus for the partial conversion of natural gas to liquid natural gas
A method and apparatus for the partial conversion of natural gas to liquid natural gas. Natural gas, at a high pressure and free of impurities which would hinder the formation of liquid natural...
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6085545 |
Liquid natural gas system with an integrated engine, compressor and expander assembly
A method and apparatus for an engine driven system having the capability of liquefying 100% of the natural gas entering the system. The apparatus is connected to a source of clean natural gas, and...
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6085546 |
Method and apparatus for the partial conversion of natural gas to liquid natural gas
A method and an apparatus for producing liquid natural gas (LNG) from a well head or other source of cool, high pressure natural gas. The natural gas from the source is purified and split into...
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6082133 |
Apparatus and method for purifying natural gas via cryogenic separation
An apparatus for separating CO 2 from a mixture of gases includes CO 2 and a second gas, the apparatus includes an active heat exchanger and a regenerating heat exchanger. The active heat...
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6070429 |
Nitrogen rejection system for liquified natural gas
This invention concerns a method and an apparatus for removing nitrogen and other low boiling point inorganic components from pressurized LNG-bearing streams and streams produced therefrom. The...
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6065305 |
Multicomponent refrigerant cooling with internal recycle
A system for cooling a fluid particularly to a cryogenic temperature wherein a multicomponent refrigerant fluid is partially condensed, the liquid used to generate refrigeration to cool the product...
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6062041 |
Method for liquefying natural gas
Provided is a method for liquefying natural gas which can be applied to LNG plants of a wide range of capacity and can produce LNG both efficiently and economically. Feed gas of natural gas or a...
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6053007 |
Process for separating a multi-component gas stream containing at least one freezable component
This invention relates generally to a separation process in which a multi-component feed stream is introduced into a separation system that operates under solids forming conditions for at least one...
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6041620 |
Cryogenic industrial gas liquefaction with hybrid refrigeration generation
A method for liquefying an industrial gas wherein a portion of the requisite refrigeration is generated by a multicomponent refrigerant circuit and a portion is generated by turboexpansion of...
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