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| Number | Title | Issue Date |
| 7856848 | Flexible hydrocarbon gas separation process and apparatus The present invention related to a flexible hydrocarbon gas separation process that could dehydrate the water-saturated hydrocarbon gas mixture and recover thereof the required higher hydrocarbons (NGL) therein with a controllable ethane recovery rate (ranging from ... | 12/28/2010 |
| 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 |
| 7305850 | Distillation process using microchannel technology The disclosed invention relates to a process for distilling a fluid mixture in a microchannel distillation unit, the microchannel distillation unit comprising a plurality of microchannel distillation sections, the fluid mixture comprising a more volatile component a... | 12/11/2007 |
| 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 |
| 7278264 | Process to convert low grade heat source into power using dense fluid expander A process to convert heat into power is set forth wherein, to make the cycle more suitable to low grade heat, the working fluid remains substantially in the liquid state after being heat exchanged against the heat source and a dense fluid expander is used in place o... | 10/09/2007 |
| 7266948 | Method and device for separating gases and/or liquids Method and device for separating gases and/or liquids in a vertical column (1). The top product (4) of the column (1) is cooled and partly recycled. The bottom product (3) of the column (1) is heated and partly recycled. Cooling an... | 09/11/2007 |
| 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 |
| 7240499 | Method for transporting compressed natural gas to prevent explosions A method for preventing explosions while transporting compressed natural gas by a floating vessel entails obtaining pressurized high-energy content gas; separating the pressurized product stream into saturated gas and liquids; and removing impurities from the satura... | 07/10/2007 |
| 7240498 | Method to provide inventory for expedited loading, transporting, and unloading of compressed natural gas A method for providing inventory for expedited loading and transport of compressed natural gas entails obtaining pressurized high-energy content gas; separating the high-energy gas into saturated gas and liquids; and removing impurities from the saturated gas. Water... | 07/10/2007 |
| 7237391 | Method for processing and transporting compressed natural gas A method for processing and transporting compressed natural gas by a floating vessel with a power plant entails obtaining pressurized high-energy content gas, separating the pressurized product stream into saturated gas and liquids, and removing impurities from the ... | 07/03/2007 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 C2 and higher hydrocarbons, in particular ethylene and ethane, comprising an operation (70) for compressing and dryin... | 03/06/2007 |
| 7165423 | Process for extracting ethane and heavier hydrocarbons from LNG A process for the extraction and recovery of ethane and heavier hydrocarbons (C2+) from LNG. The process covered by this patent maximizes the utilization of the beneficial cryogenic thermal properties of the LNG to extract and recover C2+ form the LNG using a unique... | 01/23/2007 |
| 7155931 | 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 directed in heat exchanger relation with a warmer distillation stream rising fro... | 01/02/2007 |
| 7152428 | Refrigeration system A refrigeration process is disclosed that employs a mixed refrigerant to chill a process gas stream in which a second stream is cooled against rewarming vaporized mixed refrigerant at low pressure and subsequently is at least partially vaporized against at least par... | 12/26/2006 |
| 7124812 | Heat exchanger Apparatus and method for cooling heated fluids, such as exhaust gases, flowing through a heat exchanger comprising one or more exhaust plenums and one or more coolant plenums, and providing increased coolant velocity in that portion of the coolant plenums contacting... | 10/24/2006 |
| 7100399 | Enhanced operation of LNG facility equipped with refluxed heavies removal column Improved methodology for starting up a LNG facility employing a refluxed heavies removal column. The improved methodology involves varying the temperature of the feed to the heavies removal column between start-up and normal operation. This allows a larger amount of... | 09/05/2006 |
| 7082787 | Refrigeration system The recovery of ethylene from light gases at low temperature by the use of a mixed refrigeration system comprising methane, ehtylene and/or ethane, and propylene and/or propane. ... | 08/01/2006 |
| 7077198 | In situ recovery from a hydrocarbon containing formation using barriers A method is described for inhibiting migration of fluids into and/or out of a treatment area undergoing an in situ conversion process. Barriers in the formation proximate a treatment area may be used to inhibit migration of fluids. Inhibition of migration of fluids ... | 07/18/2006 |
| 7073348 | Method and system for extracting carbon dioxide by anti-sublimation for storage thereof A method and system for extracting and storing carbon dioxide from fumes derived from the combustion of hydrocarbons in an apparatus designed in particular for the production of mechanical energy comprises: exchangers (11, 25) and a dehydrator (56), fo... | 07/11/2006 |
| 7059152 | Nitrogen rejection method and apparatus Nitrogen is rejected from a feed natural gas stream comprising methane and nitrogen so as to form a primary methane product. The mole fraction of nitrogen in the feed natural gas increases over a period of time. The feed natural gas stream is cooled in a main heat e... | 06/13/2006 |
| 6978638 | Nitrogen rejection from condensed natural gas Method for the rejection of nitrogen from condensed natural gas which comprises (a) introducing the condensed natural gas into a distillation column at a first location therein, withdrawing a nitrogen-enriched overhead vapor stream from the distillation column, and ... | 12/27/2005 |
| 6945075 | 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... | 09/20/2005 |
| 6941771 | Liquid natural gas processing 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 with at least one portion used as an external reflux, without prior tr... | 09/13/2005 |
| 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 stream. In the stand-alone process, the fuel gas is cooled in one or more... | 08/23/2005 |
| 6925837 | Enhanced operation of LNG facility equipped with refluxed heavies removal column Improved methodology for starting up a LNG facility employing a refluxed heavies removal column. The improved methodology involves varying the temperature of the feed to the heavies removal column between start-up and normal operation. This allows a larger amount of... | 08/09/2005 |
| 6923016 | Refrigeration cycle apparatus In a refrigerant cycle apparatus, an energy-saving operation is performed by using a refrigerant which is used in a supercritical state. A refrigeration cycle apparatus is constituted by a main compressor, an expander, a sub compressor independently placed in an ups... | 08/02/2005 |
| 6915662 | Hydrocarbon gas processing A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. In recent years, the preferred method of separating a hydrocarbon gas stream generally includes supplying at least porti... | 07/12/2005 |
| 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 with at least one portion used as an external reflux, without prior tr... | 06/21/2005 |
| 6901762 | Device and method for pressure control of cargo tank of liquefied natural gas carrier An apparatus for controlling the pressure in a cargo tank 1 supplies BOG generated from liquefied natural gas stored in the cargo tank 1 to a burning system 6 through a compressor. In this apparatus, a reliquefaction plant 5 is disposed o... | 06/07/2005 |
| 6564580 | Process for recovering ethane and heavier hydrocarbons from methane-rich pressurized liquid mixture The invention is an absorption process for recovering C2+ components from a pressurized liquid mixture comprising C1 and C2+. The pressurized liquid mixture is at least partially vaporized by heating the liquid mixture in ... | 05/20/2003 |
| 6560989 | Separation of hydrogen-hydrocarbon gas mixtures using closed-loop gas expander refrigeration A method for the recovery of hydrogen and one or more hydrocarbons having one or more carbon atoms from a feed gas containing hydrogen and the one or more hydrocarbons, which process comprises cooling and partially condensing the feed gas to provide a par... | 05/13/2003 |
| 6539747 | Process of manufacturing pressurized liquid natural gas containing heavy hydrocarbons The invention relates to a process of manufacturing a pressurized multi-component liquid from a pressurized, multi-component stream, such as natural gas, which contains C5+ components and at least one component of C1, C2, ... | 04/01/2003 |
| 6513338 | Refrigerant mixture for a mixture-throttling process A refrigerant mixture for a mixture throttle process contains from 0.06 mol/mol to 0.20 mol/mol propane, from 0.26 mol/mol to 0.36 mol/mol nitrogen and from 0.20 mol/mol to 0.38 mol/mol methane, the remainder being ethane.... | 02/04/2003 |
| 6401486 | Enhanced NGL recovery utilizing refrigeration and reflux from LNG plants The present invention is directed to methods and apparatus for improving the recovery of the relatively less volatile components from a methane-rich gas feed under pressure to produce an NGL product while, at the same time, separately recovering the relat... | 06/11/2002 |
| 6363744 | Hydrocarbon separation process and apparatus A process is described for separating the heavier hydrocarbons from a gaseous hydrocarbon feed wherein a first separator is employed to separate partially condensed gaseous feed and wherein the vapour portion undergoes work expansion and is fed to a fract... | 04/02/2002 |
| 6334334 | Process for liquefying a hydrocarbon-rich stream In the liquefaction of a hydrocarbon by indirect heat exchange with the refrigerant mixture of a refrigerant mixture cycle, the refrigerant mixture being compressed in multiple stages, the compressed refrigerant mixture (23) is at least partially condense... | 01/01/2002 |
