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| Number | Title | Issue Date |
| 8156758 | Method of extracting ethane from liquefied natural gas Methods and systems for recovery of natural gas liquids (NGL) and a pressurized methane-rich sales gas from liquefied natural gas (LNG) are disclosed. In certain embodiments, LNG passes through a heat exchanger, thereby heating and vaporizing at least a portion of t... | 04/17/2012 |
| 7856847 | Multiple reflux stream hydrocarbon recovery process An ethane recovery process utilizing multiple reflux streams is provided. Feed gas is cooled, partially condensed, and separated into a first liquid stream and a first vapor stream. First liquid stream is expanded and sent to a demethanizer. First vapor stream is sp... | 12/28/2010 |
| 7818979 | Multiple reflux stream hydrocarbon recovery process An ethane recovery process utilizing multiple reflux streams is provided. Feed gas is cooled, partially condensed, and separated into a first liquid stream and a first vapor stream. First liquid stream is expanded and sent to a demethanizer. First vapor stream is sp... | 10/26/2010 |
| 7716947 | Apparatus and method for condensing hydrocarbons from natural gas Apparatus for condensing hydrocarbons, such as but not limited to butane and propane, from a stream of natural gas includes as its primary components a pre-cooler assembly, a chiller assembly, a refrigerant compressor/condenser assembly, and separator assembly. In t... | 05/18/2010 |
| 7631516 | Liquefied natural gas processing A process and apparatus for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. The LNG feed stream is divided into two portions. The first portion is supplied to a fractionation colu... | 12/15/2009 |
| 7621152 | Compact cryogenic plant A cryogenic plant having at least two direct phase separation devices such as distillation columns whose circular perimeters serve to define the perimeter of the cold box encompassing the direct phase separation devices and ancillary equipment for the process. ... | 11/24/2009 |
| 7600396 | Power cycle with liquefied natural gas regasification Liquefied natural gas (LNG) or components thereof are used as working fluids in power generation cycles in a LNG regasification plant. Especially preferred plant configurations will be able to process LNG of different composition while generating on-spec pipeline ga... | 10/13/2009 |
| 7520143 | Dual stage nitrogen rejection from liquefied natural gas Nitrogen is removed from a liquefied natural gas feed (41) by a two stage separation in which the liquefied natural gas (41) is first fractionated (23) to provide a first nitrogen-enriched overhead vapour stream (46) and a nitrogen-contai... | 04/21/2009 |
| 7484385 | Multiple reflux stream hydrocarbon recovery process An ethane recovery process utilizing multiple reflux streams is provided. Feed gas is cooled, partially condensed, and separated into a first liquid stream and a first vapor stream. First liquid stream is expanded and sent to a demethanizer. First vapor stream is sp... | 02/03/2009 |
| 7437891 | Recovery and purification of ethylene A process for the recovery and purification of ethylene and optionally propylene from a stream containing lighter and heavier components that employs an ethylene distributor column and a partially thermally coupled distributed distillation system. ... | 10/21/2008 |
| 7404301 | LNG facility providing enhanced liquid recovery and product flexibility A single LNG facility, and operating method therefor, capable of efficiently producing LNG products that meet the varying specifications of different LNG markets. ... | 07/29/2008 |
| 7373285 | Application of phase behavior models in production allocation systems The present invention is directed to a method for allocating revenue or taxes to individual fluid streams commingled during an oil and gas production process, the method includes commingling fluid streams to produce a commingled fluid stream; (2) utilizing a process... | 05/13/2008 |
| 7357003 | Process and apparatus for separation of hydrocarbons There are provided a process for separation of hydrocarbons including the steps of: (a) a feed gas is cooled and partly condensed, and separated into a gas and a liquid; (b) the liquid obtained in step (a) is supplied to a distillation column; (c) the gas obtained i... | 04/15/2008 |
| 7350359 | Method for utilizing gas reserves with low methane concentrations and high inert gas concentrations for fueling gas turbines The invention is directed to a method of fueling gas turbines from natural gas reserves with relatively low methane concentrations. The invention uses such reserves to generate electric power. The invention permits the use of these reserves at significantly lower co... | 04/01/2008 |
| 7316127 | Hydrocarbon gas processing for rich gas streams A process for the recovery of ethane and heavier hydrocarbon components from a hydrocarbon feed gas stream. Feed gas stream is cooled into a first and second cooled streams. First and second cooled streams are sent to a cold absorber and separated into a first gas s... | 01/08/2008 |
| 7310972 | Process and apparatus for separation of hydrocarbons from liquefied natural gas An apparatus and process for separating a feed liquefied natural gas containing at least methane and a hydrocarbon less volatile the methane, into a product natural gas enriched with methane and lean in hydrocarbon less volatile than methane and a heavier fraction l... | 12/25/2007 |
| 7309165 | Ball bearing retention apparatus An improved hybrid transmission including two electric motor/generator modules and a plurality of planetary gear sets operatively connectable to the motor/generators and to an engine is provided. Novel structural and packaging schemes enhance the function and effici... | 12/18/2007 |
| 7299643 | Method for recovering LPG boil off gas using LNG as a heat transfer medium A process for condensing a C3-C4 hydrocarbon vapor which comprises contacting the C3-C4 hydrocarbon vapor with a heat exchanger surface which is cooled by contact with LNG and recovering a liquefied C3-C4 | 11/27/2007 |
| 7299655 | Systems and methods for vaporization of liquefied natural gas Disclosed are methods and systems for vaporization of liquefied natural gas (LNG) that employ a condensing gas stream to adjust the gross heating value (GHV) of the LNG such that, upon vaporization, a natural gas product is obtained that meets pipeline or other comm... | 11/27/2007 |
| 7278281 | Method and apparatus for reducing C2 and C3 at LNG receiving terminals A liquefied natural gas (LNG) receiving terminal is provided, including an extraction column adapted and configured to separate a C1 component from other components in a LNG stream into a C1 rich stream, one of a gas condenser and a heat exchan... | 10/09/2007 |
| 7269972 | Plant and method for fractionating and purifying synthesis gas An plant unit for fractionating and purifying synthesis gas is described, which is comprised of a device for partially condensing synthesis gas and a device for nitrogen washing, whereat the device for nitrogen washing is adjacent to the device for partial condensat... | 09/18/2007 |
| 7264654 | Process and system for the condensation of multi-component working fluids A process and system for condensing a multi-component fluid is disclosed, where the process and system are designed to provide a substantial increase in a heat transfer coefficient during condensation of multi-component fluids resulting in a drastic reduction in siz... | 09/04/2007 |
| 7263859 | Process and apparatus for cooling a stream of compressed air Process and apparatus for cooling a compressed gas stream which utilizes one or more elongated vessels having a substantially vertical orientation. Each vessel has one compartment for indirect heat exchange between the compressed gas stream and a cooling stream and ... | 09/04/2007 |
| 7257966 | Internal refrigeration for enhanced NGL recovery The present invention is directed to methods for improving the efficiency of processes for the recovery of natural gas liquids from a gas feed, e.g., raw natural gas or a refinery or petrochemical plant gas stream. These methods may be employed with most, if not all... | 08/21/2007 |
| 7253314 | Method for refining easily polymerizable matter-containing substance and apparatus therefor A method for refining an easily polymerizable matter while preventing an easily polymerizable matter-containing substance from being polymerized and an apparatus for use in the method are disclosed. The method and apparatus for refining and separating the easily pol... | 08/07/2007 |
| 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 comprises between about 60 mole percent to about 85 mole percent tol... | 07/31/2007 |
| 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 (111), which pretreated nat... | 07/03/2007 |
| 7234322 | LNG system with warm nitrogen rejection Natural gas liquefaction system employing an enhanced nitrogen removal system capable of removing nitrogen from a relatively warm natural gas stream. ... | 06/26/2007 |
| 7234323 | Recovering natural gas liquids from LNG using vacuum distillation A process for recovering liquefied C3 compounds from a natural gas stream containing C3 compounds which comprises (a) chilling the natural gas stream under conditions sufficient to liquefy the natural gas, whereby a mixture comprising liquid na... | 06/26/2007 |
| 7225636 | Apparatus and methods for processing hydrocarbons to produce liquified natural gas An apparatus for and process for recovering LNG from reservoir natural gas which includes circulating a portion of the natural gas thru a gas cooling loop that includes heat exchanges, an expansion zone and compression zone. The process also includes removing liquid... | 06/05/2007 |
| 7219513 | Ethane plus and HHH process for NGL recovery The present invention relates to methods for separating and recovering ethane, propane and heavier components from a feed gas, e.g. raw natural gas or a refinery or petroleum plant gas stream or a petrochemical plant gas stream. These methods employ a common new con... | 05/22/2007 |
| 7216507 | Liquefied natural gas processing A process and apparatus for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. The LNG feed stream is divided into two portions. The first portion is supplied to a fractionation colu... | 05/15/2007 |
| 7213411 | Method and device for the rapid solidification of aqueous substances A method and devices for the solidification of aqueous substances by the direct evaporation of water from the substance and the sorption of the water vapor in a sorption agent in a vacuum system, wherein the aqueous substance and the sorption agent are evacuated fro... | 05/08/2007 |
| 7213413 | Noninvasive measurement and control system for use in hydrocarbon processing Raman spectrometers are employed in a hydrocarbon processing plant for online measurement of at least one compositional property of a hydrocarbon stream. The Raman spectrometers can be used to control separations equipment, determine energy content, and/or determine... | 05/08/2007 |
| 7210311 | 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 be liquefied is partially cooled, expanded to an intermediate pressu... | 05/01/2007 |
| 7207192 | Secondary deethanizer to debottleneck an ethylene plant A process for deethanizing light hydrocarbons comprising olefins is disclosed. A feed stream, comprising ethylene, ethane, propylene, and propane, is supplied to a primary deethanizer 24, having absorption and stripping sections. The absorption section produc... | 04/24/2007 |
| 7204100 | 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 be liquefied is partially cooled and divided into first and second s... | 04/17/2007 |
| 7201019 | Light gas component separation from a carbon dioxide mixture A method of separating one or more light components, such as helium, from a carbon dioxide containing stream. A two-phase stream is obtained, at least in part, by cooling a pressurized feed stream to at least partially condense such stream. The stream that is subseq... | 04/10/2007 |
| 7195741 | Multiple riser reactor The present invention is directed to a hydrocarbon conversion apparatus. The apparatus comprises the following: a plurality of riser reactors, each of the riser reactors having a first end into which a catalyst can be fed and a second end through which the catalyst ... | 03/27/2007 |
| 7191617 | Hydrocarbon gas processing A process for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and divided into first and second streams. The first stream is further cooled to condense substant... | 03/20/2007 |
