Class / Patent application number | Description | Number of patent applications / Date published |
062621000 | Flowline expansion engine | 22 |
20090308101 | Propane Recovery Methods and Configurations - High-pressure feed gas is chilled and expanded to condense a portion of the feed gas into a C2+ enriched liquid phase and a C2+ depleted vapor phase. The liquid phase is expanded to provide additional cooling for the feed gas and deethanizer reflux prior to being fed to the deethanizer while the vapor is combined with residue gas of a deethanizer. | 12-17-2009 |
20100000254 | METHOD OF PRODUCING GAS HYDRATE - Provided is a method of producing gas hydrate at a low cost. An acid gas | 01-07-2010 |
20100162755 | Method for Nitrogen Rejection and or Helium Recovery in an Liquefaction Plant - Methods of reducing the concentration of low boiling point components in liquefied natural gas are disclosed. The methods involve dynamic decompression of the liquefied natural gas and one or more pre-fractionation vessels. Particular embodiments are suited for recovering helium and/or nitrogen enriched streams from a liquefied natural gas stream. | 07-01-2010 |
20100242536 | METHOD OF PROCESSING A FEED NATURAL GAS TO OBTAIN A PROCESSED NATURAL GAS AND A CUT OF C5+ HYDROCARBONS, AND ASSOCIATED INSTALLATION - The method includes the introduction of a feed flow into a first flask, the dynamic expansion of the gaseous flow issuing from the flask in a turbine, then its introduction into a first purification column. | 09-30-2010 |
20100263407 | METHOD FOR PRODUCING A FLOW WHICH IS RICH IN METHANE AND A CUT WHICH IS RICH IN C2+ HYDROCARBONS FROM A FLOW OF FEED NATURAL GAS AND AN ASSOCIATED INSTALLATION - This method comprises cooling the feed natural gas in a first heat exchanger and introducing the cooled, feed natural gas into a first separation flask. | 10-21-2010 |
20110005273 | METHOD FOR PRODUCING A FLOW RICH IN METHANE AND A FLOW RICH IN C2+ HYDROCARBONS, AND ASSOCIATED INSTALLATION - This method comprises cooling the supply flow in a first heat exchanger, separation in a first separation flask in order to produce a light upper flow and a heavy lower flow and dividing the light upper flow into a supply fraction of a dynamic pressure reduction turbine and a supply fraction of a first distillation column. | 01-13-2011 |
20110041550 | PROCESS AND APPARATUS FOR THE SEPARATION OF LIGHT-BOILING COMPONENTS FROM HYDROCARBON MIXTURES - A process and apparatus for the separation of a feed mixture into higher-boiling and lower boiling fractions in a continuously operated distillation apparatus uses at least one inlet pipe for feeding feed mixtures, an outlet for the lower-boiling fraction, an outlet for the higher-boiling fraction and a heating device. The distillation apparatus includes at least two condensation stages, each of a different temperature level, the condensation stages upstream in direction of the vapour flow having a higher temperature level than the downstream stages. Separation-effective internals are installed between the condensation stages, partial condensation taking place in the condensation stages, partial amounts that have not condensed in these stages being fed to downstream separation-effective internals or condensation stages of lower temperature level and partial amounts that have condensed are passed via separation-effective internals in direction of the outlet means for the higher-boiling fraction. A basically vaporous fluid is obtained at the condensation stage of the lowest temperature level, where it partially condenses, the uncondensed part of the fluid being fed to the outlet for the lower-boiling fraction and the condensed part being passed to a section of the distillation apparatus which is upstream of the condensation stage having the lowest temperature level. The condensation stage of the lowest temperature level having a temperature of below −40 ° C. | 02-24-2011 |
20130074542 | SYSTEM AND METHOD FOR RECOVERING NATURAL GAS LIQUIDS WITH AUTO REFRIGERATION SYSTEM - The various embodiments herein provide a method and system for a process configuration with internal refrigeration for light gas and a process configuration with external refrigeration system for rich gas. The self-refrigeration unit comprising an open-closed cycle of refrigeration provides a required refrigeration load and the external refrigeration unit provides a refrigeration load corresponding to variations in a feed composition percentage. The configuration with internal refrigeration system utilizes a slip stream from or near the bottom of the demethanizer as a mixed refrigerant. | 03-28-2013 |
20130213087 | NGL RECOVERY FROM NATURAL GAS USING A MIXED REFRIGERANT - An NGL recovery facility for separating ethane and heavier (C | 08-22-2013 |
20140013797 | System and Method for Removing Excess Nitrogen from Gas Subcooled Expander Operations - A system and method for removing nitrogen from an intermediate stream in a gas subcooled process operation that processes natural gas into a sales gas stream and a natural gas liquids stream. The system and method of the invention are particularly suitable for use with gas subcooled process operations where the sales gas stream exceeds pipeline nitrogen specifications by up to about 3%, such as for reducing the nitrogen content of sales gas streams to levels permissible for pipeline transport. | 01-16-2014 |
20140338396 | METHODS FOR SEPARATING HYDROCARBON GASES - The present invention relates to a process for separating a hydrocarbon gas into a fraction containing a predominant portion of the methane or ethane and lighter components and a fraction containing a predominant portion of the C | 11-20-2014 |
20160010917 | Method and System For Separating Fluids In A Distillation Tower | 01-14-2016 |
20160054055 | Process for separating and recovering NGLs from hydrocarbon streams - This process comprises using unconventional processing of hydrocarbons, e.g. natural gas, for recovering C2+ and NGL hydrocarbons that meet pipeline specifications, without the core high capital cost requirement of a demethanizer column, which is central to and required by almost 100% of the world's current NGL recovery technologies. It can operate in Ethane Extraction or Ethane Rejection modes. The process uses only heat exchangers, compression and simple separation vessels to achieve specification ready NGL. The process utilizes cooling the natural gas, expansion cooling, separating the gas and liquid streams, recycling the cooled streams to exchange heat and recycling selective composition bearing streams to achieve selective extraction of hydrocarbons, in this instance being NGLs. The compactness and utility of this process makes it feasible in offshore applications as well as to implementation to retrofit/revamp or unload existing NGL facilities. Many disparate processes and derivatives are anticipated for its use. | 02-25-2016 |
20160069610 | HYDROCARBON GAS PROCESSING - A process and an apparatus are disclosed for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The stream is divided into first and second streams. The first stream is cooled to condense substantially all of it, expanded to lower pressure, and supplied to a fractionation tower at an upper mid-column feed position. The second stream is cooled sufficiently to partially condense it and separated into vapor and liquid streams. The vapor stream is divided into first and second portions. The first portion is cooled to condense substantially all of it, expanded to the tower pressure, and supplied to the tower at the top feed position. The second portion is expanded to the tower pressure and supplied to the fractionation tower at an intermediate mid-column feed position. The liquid stream is expanded to the tower pressure and supplied to the column at a lower mid-column feed position. The quantities and temperatures of the feeds to the fractionation tower are effective to maintain the overhead temperature of the fractionation tower at a temperature whereby the major portion of the desired components is recovered. | 03-10-2016 |
20160187058 | Ethane Recovery Methods And Configurations - Contemplated methods and configurations use a cooled ethane and CO2-containing feed gas that is expanded in a first turbo-expander and subsequently heat-exchanged to allow for relatively high expander inlet temperatures to a second turbo expander. consequently, the relatively warm demethanizer feed from the second expander effectively removes CO2 from the ethane product and prevents carbon dioxide freezing in the demethanizer, while another portion of the heat-exchanged and expanded feed gas is further chilled and reduced in pressure to form a lean reflux for high ethane recovery. | 06-30-2016 |
20160377341 | HYDROCARBON GAS PROCESSING FEATURING A COMPRESSED REFLUX STREAM FORMED BY COMBINING A PORTION OF COLUMN RESIDUE GAS WITH A DISTILLATION VAPOR STREAM WITHDRAWN FROM THE SIDE OF THE COLUMN - A process and an apparatus are disclosed for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and divided into first and second portions. The first and second portions are expanded to the fractionation tower pressure and supplied to the fractionation tower at upper mid-column feed positions, with the expanded second portion being heated before it enters the tower. The second stream is expanded to the tower pressure and supplied to the column at a mid-column feed position. A distillation vapor stream is withdrawn from the column above the feed point of the second stream, combined with a portion of the tower overhead vapor stream, compressed to higher pressure, and directed into heat exchange relation with the remaining tower overhead vapor stream and the expanded second portion to cool the compressed combined vapor stream and condense at least a part of it, forming a condensed stream. At least a portion of the condensed stream is expanded to the tower pressure and directed to the fractionation tower as its top feed. The quantities and temperatures of the feeds to the fractionation tower are effective to maintain the overhead temperature of the fractionation tower at a temperature whereby the major portion of the desired components is recovered. | 12-29-2016 |
20170234612 | Treatment Of Nitrogen-Rich Natural Gas Streams | 08-17-2017 |
062622000 | Downstream of column | 5 |
20090139263 | THERMOSYPHON REBOILER FOR THE DENITROGENATION OF LIQUID NATURAL GAS - Processes are provided for the denitrogenation of a crude LNG stream. A crude LNG stream is expanded and then cooled in a thermosyphon reboiler. The resultant crude LNG stream is introduced into a nitrogen rejection column, wherein the nitrogen content of the LNG is reduced as the liquid flows down the column. A nitrogen-enriched vapor stream is withdrawn from the top of the column, and a first, and optionally a second, nitrogen-diminished liquid stream is withdrawn from the bottom of the column. The first stream may be recovered as a LNG product, and the second stream is passed through the thermosyphon reboiler, cooling the crude LNG stream, while partially vaporizing the second stream. The vaporized second stream is reinjected into the column at a level above the level of withdrawal of the second nitrogen-diminished bottoms LNG stream to provide column boilup. Alternatively, the thermosyphon reboiler is placed within the column. | 06-04-2009 |
20100223952 | Separation of Carbon Monoxide From Gaseous Mixtures Containing Carbon Monoxide - A process and apparatus for producing a carbon monoxide-containing product from a feed containing hydrogen, carbon monoxide, methane, nitrogen and optionally argon. The carbon monoxide-containing product is produced using a hydrogen stripping column for forming a hydrogen-enriched vapor and a hydrogen-freed liquid, a nitrogen separation fractionator for forming a nitrogen-enriched vapor and a nitrogen-depleted liquid containing carbon monoxide and methane from the hydrogen-freed liquid, and a carbon monoxide/methane separation fractionator for forming the carbon monoxide containing product and a methane-enriched liquid from the nitrogen-depleted liquid. At least part of the nitrogen separation fractionator condenser duty provides the feed vaporization duty and reboiler duty for the carbon monoxide/methane separation fractionator, thereby reducing the energy requirement for the separation. | 09-09-2010 |
20130255311 | SIMPLIFIED METHOD FOR PRODUCING A METHANE-RICH STREAM AND A C2+ HYDROCARBON-RICH FRACTION FROM A FEED NATURAL-GAS STREAM, AND ASSOCIATED FACILITY - A method comprising the cooling of the feed natural-gas ( | 10-03-2013 |
20150007606 | GAS MIXTURE SEPARATION METHOD - The present invention relates to the technology of processing byproduct gas or natural gas and in particular to a process for low-temperature separating gas components. | 01-08-2015 |
20160054054 | PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN - There is provided a process for the separation of a gaseous feed comprising a mixture of nitrogen, hydrocarbons and at least 0.005 mol % carbon dioxide, the process comprising: (i) cooling and at least partially condensing the gaseous feed, and (ii) separating in one or more stages the cooled and at least partially condensed gaseous feed into a hydrocarbon rich product stream low in nitrogen and a nitrogen rich reject stream low in hydrocarbons, and wherein refrigeration is provided to one or more stages of the separation process by a heat pump system in which a heat pump refrigerant fluid is compressed and subsequently expanded at one or more pressure levels below the condensing pressure, and subsequently heated in heat exchange with the gaseous feed and/or one or more streams generated by the separation process to provide refrigeration thereto; and further wherein at least part of the heated refrigerant is recycled through the heat pump system. There is also provided an apparatus for the separation of a gaseous feed comprising a mixture of nitrogen, hydrocarbons and at least 0.005 mol % carbon dioxide. | 02-25-2016 |