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| Number | Title | Issue Date |
| 7637121 | Natural gas liquefaction process Disclosed is a process for liquefying natural gas wherein an available methane-rich feed, i.e., natural gas, at an excess pressure is initially expanded to provide expansion work which may be utilized in a number of novel ways, such as to provide refrigeration in a ... | 12/29/2009 |
| 7637122 | Apparatus for the liquefaction of a gas and methods relating to same Apparatuses and methods are provided for producing liquefied gas, such as liquefied natural gas. In one embodiment, a liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of ... | 12/29/2009 |
| 7594414 | Apparatus for the liquefaction of natural gas and methods relating to same An apparatus and method for producing liquefied natural gas. A liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a process stream an... | 09/29/2009 |
| 7568363 | Treating of a crude containing natural gas A process for treating a crude containing natural gas comprising supplying the crude to a stabilization unit to obtain a gaseous stream and crude oil; supplying a compressed, gaseous stream at a low temperature to the bottom of a first column; partly condensing the ... | 08/04/2009 |
| 7552598 | Process for sub-cooling an LNG stream obtained by cooling by means of a first refrigeration cycle, and associated installation In this process, the LNG stream is sub-cooled with a refrigerating fluid in a first heat exchanger. This refrigerating fluid undergoes a closed second refrigeration cycle which is independent of the first cycle. The closed cycle comprises a phase of heating the refr... | 06/30/2009 |
| 7540171 | Cryogenic liquefying/refrigerating method and system Cryogenic liquefying/refrigerating method and system, wherein temperature of gas-to-be-liquefied at the inlet of the compressor for compressing the gas is reduced by cooling the gas discharged from the compressor using a high-efficiency chemical refrigerating machin... | 06/02/2009 |
| 7469556 | Natural gas liquefaction system A method for producing liquefied natural gas wherein high pressure liquid natural gas is subcooled and then flashed to form flash vapor and liquefied natural gas product, and the flash vapor is employed in a refrigeration cycle to generate refrigeration for subcooli... | 12/30/2008 |
| 7461520 | Gas liquefaction plant A gas liquefaction plant includes a pre-cooling exchanger which pre-cools a feed gas by means of indirect heat exchange with a first refrigerant; a first refrigerant compressor which compresses the first refrigerant which has been used for refrigerating the feed gas... | 12/09/2008 |
| 7451618 | Process for liquefying natural gas and producing hydrocarbons A process for the preparation of liquid hydrocarbons from a light hydrocarbonaceous feedstock in combination with a process for liquefying natural gas, which liquefaction process involves the steps of (a) passing the natural gas at liquefaction pressure... | 11/18/2008 |
| 7415840 | Optimized LNG system with liquid expander A process and apparatus for the liquefaction of natural gas including at least one liquid expander for providing expansion of a high-pressure stream and powering a generator capable of producing electricity to be used to drive a compressor located elsewhere in the l... | 08/26/2008 |
| 7388303 | Stand-alone electrical system for large motor loads An electrical power system that can be used to interconnect a plurality of generators to a plurality to loads while being rated at less than a total power consumed. The system is preferably used to distribute power for a Liquefied Natural Gas (LNG) facility. The sys... | 06/17/2008 |
| 7347889 | Ultrasonic solution separator An ultrasonic solution separator including an ultrasonic atomization chamber supplied with a solution containing a target material; an ultrasonic oscillator producing mist from the solution in the ultrasonic atomization chamber with ultrasonic oscillation; a power s... | 03/25/2008 |
| 7338563 | Process for cleaning hydrocarbons from soils A combination of parallel processes is disclosed to provide optimal re-mediation operations for contaminated soil. Soils with high levels of heavy petroleum hydrocarbons are directed to a thermal process for destruction in a combustion process. Carbon dioxide genera... | 03/04/2008 |
| 7332145 | Process and installation for the treatment of DSO Disclosed is a process for the treatment of gas containing mercaptans and acid gases, including the following steps: (1) separating the acid gases from the said gas and obtaining a sweetened gas and the flow of acid gases containing H2S; (2) reacting the ... | 02/19/2008 |
| 7310971 | LNG system employing optimized heat exchangers to provide liquid reflux stream An improved apparatus and method for providing reflux to a refluxed heavies removal column of a LNG facility. The apparatus comprises stacked vertical core-in-kettle heat exchangers and an economizer disposed between the heat exchangers. The reflux stream originates... | 12/25/2007 |
| 7294173 | Method and system for desorption and recovery of desorbed compounds A method for desorption and recovery of desorbed compounds, including the steps of generating a recirculating stream of inert gas (1), which passes through the material (2) to be desorbed, heating such inert gas stream to a temperature sufficient to ca... | 11/13/2007 |
| 7266975 | Process of Liquefying a gaseous, methane-rich feed to obtain liquefied natural gas A process of liquefying a gaseous, methane-rich feed to a liquefied product is provided that includes adjusting the composition and the amount of refrigerant and controlling the liquefaction process using an advanced process controller based on model predictive cont... | 09/11/2007 |
| 7264025 | Optimized cryogenic fluid supply method A method for supplying a cryogenic fluid to a network of two or more cryogenic fluid receiving stations, wherein a cryogenic liquid is routed to cryogenic fluid receiving stations in a single cryogenic vessel and is dispensed to the cryogenic fluid receiving station... | 09/04/2007 |
| 7251956 | Modular LNG process Disclosed are methods for efficiently and economically designing, constructing, or operating a light hydrocarbon gas liquefaction process for the liquefaction of selected quantities of light hydrocarbon gas. The method includes a light hydrocarbon gas liquefaction l... | 08/07/2007 |
| 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 |
| 7228714 | Natural gas liquefaction system A method for producing liquefied natural gas wherein high pressure liquid natural gas is subcooled and then flashed to form flash vapor and liquefied natural gas product, and the flash vapor is employed in a refrigeration cycle to generate refrigeration for subcooli... | 06/12/2007 |
| 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 |
| RE39637 | Hybrid cycle for the production of liquefied natural gas Refrigeration process for gas liquefaction which utilizes one or more vaporizing refrigerant cycles to provide refrigeration below about −40° C. and a gas expander cycle to provide refrigeration below about −100° C. Each of these two types of refrigerant syste... | 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 |
| 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 |
| 7178351 | Heat exchanger optimization process and apparatus An electronic HEMD determines the optimum balance between gas cooling and heat exchanger pressure loss, for any given operating condition, and adjusts the gas flow rate through the exchanger accordingly, to yield the maximum net power savings (and thereby energy sav... | 02/20/2007 |
| 7168265 | Integrated processing of natural gas into liquid products An integrated process for producing LNG and GTL products is provided, wherein a CO2-containing natural gas feed to an LNG production zone is first pre-treated to separate at least a portion of the CO2 therefrom, and the resulting CO2 | 01/30/2007 |
| 7155917 | Apparatus and methods for converting a cryogenic fluid into gas Method and apparatus for vaporizing cryogenic fluids in which an intermediate heat transfer fluid is first heated across a heat transfer surface with ambient air, and then the heat transfer surface provides heat to vaporize the cryogenic fluid. ... | 01/02/2007 |
| 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 |
| 7143606 | Combined air separation natural gas liquefaction plant In an integrated process and apparatus for the separation of air by cryogenic distillation and liquefaction of natural gas in which at least part of the refrigeration required to liquefy the natural gas is derived from at least one cryogenic air distillation plant c... | 12/05/2006 |
| 7134296 | Method for providing cooling for gas liquefaction A method for generating refrigeration for cooling a product gas wherein a first or working gas undergoes a staged expansion to a first temperature and a subsequent turboexpansion to a second higher temperature and both the expanded gas and the turboexpanded gas prov... | 11/14/2006 |
| 7127914 | Hybrid gas liquefaction cycle with multiple expanders Method for gas liquefaction comprising cooling a feed gas by a first refrigeration system in a first heat exchange zone and withdrawing a substantially liquefied stream therefrom, further cooling the substantially liquefied stream by indirect heat exchange with one ... | 10/31/2006 |
| 7121115 | Sour natural gas treating method The invention relates to a method for treating a natural gas, saturated or not with water, containing essentially hydrocarbons, a substantial amount of hydrogen sulfide and possibly carbon dioxide. The method of the invention comprises a condensation stage intended ... | 10/17/2006 |
| 7114351 | All electric LNG system and process A reduced carbon dioxide emissions system and method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process. ... | 10/03/2006 |
| 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 |
| 7096688 | Liquefaction method comprising at least a coolant mixture using both ethane and ethylene The invention concerns a method comprising: (a) a first step whereby natural gas (1) is subjected to a first refrigerating cycle to obtain cooled natural gas (4), and brought to a temperature less than 20° C. by a first coolant (201); a second ... | 08/29/2006 |
| 7086251 | Integrated multiple-loop refrigeration process for gas liquefaction Method for liquefying a gas which comprises cooling a feed gas stream successively through first and second temperature ranges to provide a liquefied product, wherein refrigeration for cooling the feed gas stream in the first temperature range is provided by a first... | 08/08/2006 |
| 7071236 | Natural gas liquefaction and conversion method The natural gas flowing in through line 1 is cooled, then expanded in turbine T1. The liquid at the bottom of drum D2 is the liquefied natural gas. The gas at the top of drum D2 is compressed by compressor K1, then fed into the tre... | 07/04/2006 |
