Entries |
Document | Title | Date |
20080264100 | Lng Regasification Configurations and Methods - LNG composition of LNG from a storage tank or other source is modified in a process in which the LNG is pumped to a first pressure and split into two portions. One portion of the pressurized LNG is then reduced in pressure and heavier components are separated from the reduced pressure LNG to thereby form a lean LNG. The lean LNG is then pumped to a higher pressure and combined with the other portion to form a leaner LNG. Preferably, separation is performed using a demethanizer, wherein part of the demethanizer overhead product is condensed to form the lean LNG, while another portion is used for column reflux. In further preferred configurations, ethane recovery is variable and in yet other configurations, propane or ethane can be delivered via a batching pipeline. | 10-30-2008 |
20090113930 | 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 split into a first and a second separator vapor streams. First separator vapor stream is expanded and sent to demethanizer. Second separator vapor stream is partially condensed and is separated into a reflux separator liquid stream, which is sent to demethanizer, and a reflux separator vapor stream, which is condensed and sent to demethanizer. Demethanizer produces a tower bottom stream containing a substantial amount of ethane and heavier components, and a tower overhead stream containing a substantial amount of remaining lighter components and forms a residue gas stream. A portion of residue gas stream is cooled, condensed, and sent to the demethanizer tower as top reflux stream. | 05-07-2009 |
20090199591 | LIQUEFIED NATURAL GAS WITH BUTANE AND METHOD OF STORING AND PROCESSING THE SAME - Disclosed is a liquefied natural gas composition. The composition contains methane, ethane and propane and butane. The composition contains a substantial amount of butane while being substantially free of hydrocarbon molecules larger than butane. | 08-13-2009 |
20100115992 | METHODS FOR RECOVERING ARGON - Methods for recovering argon from a natural gas stream being purified are disclosed. The argon will be separated from the natural gas with helium and other impurities and can be recovered as liquids from the flash separation step of purifying the helium. The argon that is separated from the helium can be rectified to remove further impurities from the argon which can be recovered for storage or other uses. | 05-13-2010 |
20100126216 | METHOD OF BULK TRANSPORT AND STORAGE OF GAS IN A LIQUID MEDIUM - An integrated ship mounted system for loading a gas stream, separating heavier hydrocarbons, compressing the gas, cooling the gas, mixing the gas with a desiccant, blending it with a liquid carrier or solvent, and then cooling the mix to processing, storage and transportation conditions. After transporting the product to its destination, a hydrocarbon processing train and liquid displacement method is provided to unload the liquid from the pipeline and storage system, separate the liquid carrier, and transfer the gas stream to a storage or transmission system. | 05-27-2010 |
20110094264 | PRODUCING PURIFIED HYDROCARBON GAS FROM A GAS STREAM COMPRISING HYDROCARBONS AND ACIDIC CONTAMINANTS - Process for producing purified hydrocarbon gas from a gas stream comprising hydrocarbons and acidic contaminants, which process comprises the steps: (a) cooling the gas stream to a temperature to form a mixture comprising solid and optionally liquid acidic contaminants and a vapour containing gaseous hydrocarbons; (b) separating the solid and optionally liquid acidic contaminants from the mixture in a vessel, yielding the purified hydrocarbon gas; (c) providing heat to at least a part of the solid and optionally liquid acidic contaminants to melt at least part of the solid acidic contaminants, yielding a heated contaminant-rich stream; (d) withdrawing the heated contaminant-rich stream from the vessel; wherein the process further comprises: (e) reheating at least a part of the heated contaminant-rich stream to form a reheated recycle stream; and (f) recycling at least a part of the reheated recycle stream to the vessel. | 04-28-2011 |
20110132033 | Conditioning an Ethane-Rich Stream for Storage and Transportation - A process comprising receiving an ethane-rich stream comprising at least about 70 molar percent ethane, conditioning the ethane-rich stream to a temperature such that the ethane-rich stream has a vapor pressure similar to the vapor pressure of conventional liquefied natural gas (LNG), and transporting the conditioned ethane-rich stream. Included is a plurality of processing equipment configured to implement a process comprising receiving an ethane-rich stream, adjusting a temperature, a pressure, or both of the ethane-rich stream such that the ethane-rich stream has a temperature from about −160° F. to about 0° F. and a pressure from about 14.7 pounds per square inch absolute (psia) to about 100 psia, and removing substantially all of any vapor fraction from the ethane-rich stream. | 06-09-2011 |
20110154856 | PROCESS FOR REMOVING A GASEOUS CONTAMINANT FROM A CONTAMINATED GAS STREAM - The invention provides a process for removing one or more gaseous contaminants from a contaminated feed gas stream, the process comprising 1) providing the contaminated feed gas stream, 2) cooling the contaminated feed gas stream to a temperature at which liquid contaminant is formed as well as a contaminant depleted gaseous phase, and 3) separating the two phases by introducing them into a gas/liquid separator vessel, comprising a gas/liquid inlet at an intermediate level, a liquid outlet arranged below the gas/liquid inlet and a gas outlet arranged above the gas/liquid inlet, in which vessel a normally horizontal coalescer is present above the gas/liquid inlet and over the whole cross-section of the vessel and in which vessel a centrifugal liquid separator is arranged above the coalescer and over the whole cross-section of the vessel, the liquid separator comprising one or more swirl tubes. The contaminated gas stream can be a methane-containing gas stream, especially a natural gas stream, or a gas stream from a gasification or combustion process. The invention further provides a device for carrying out the process as well as the purified gas stream. | 06-30-2011 |
20110197629 | Enhanced Natural Gas Liquid Recovery Process - A method comprises receiving a hydrocarbon feed stream; separating the hydrocarbon feed stream into a heavy hydrocarbon rich stream and a recycle stream, wherein the recycle stream comprises a gas selected from the group consisting of carbon dioxide, nitrogen, air, and water; and separating the recycle stream into a natural gas liquids (NGL) rich stream and a purified recycle stream. A plurality of process equipment configured to receive a hydrocarbon feed stream, separate the hydrocarbon feed stream into a heavy hydrocarbon rich stream and a recycle stream comprising at least one C | 08-18-2011 |
20120006055 | PROCESS AND APPARATUS FOR SEPARATING A GASEOUS PRODUCT FROM A FEED STREAM COMPRISING CONTAMINANTS - A process and apparatus for separating at least part of a gaseous product from a feed stream which comprises contaminants. The process comprises:
| 01-12-2012 |
20120036889 | Methane Conversion Process - A process for converting a gaseous hydrocarbon feed comprising methane to an aromatic hydrocarbon is integrated with liquefied natural gas (LNG) and/or pipeline gas production. In the integrated process, the gaseous hydrocarbon feed is supplied to a conversion zone comprising at least one dehydroaromatization catalyst and is contacted with the catalyst under conversion conditions to produce a gaseous effluent stream comprising at least one aromatic compound, unreacted methane and H | 02-16-2012 |
20120090355 | PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN - The invention provides a process and apparatus for the separation of nitrogen from a gaseous feed comprising a mixture of hydrocarbons and nitrogen gas, the process comprising the steps of: (i) cooling and at least partially condensing the gaseous feed; (ii) feeding the cooled and at least partially condensed feed from step (i) to a first fractionation to produce an overhead vapour stream having an enriched nitrogen content and a condensed product having a reduced nitrogen content which is subjected to a second fractionation, which comprises reboil, at a lower pressure than the first fractionation; (iii) partially condensing the overhead vapour stream, and separating to provide a liquid stream, which is used to provide reflux to the first fractionation, and a separated vapour stream, which is condensed to provide reflux to the second fractionation; and (iv) sub-cooling the condensed product of the first fractionation and dividing the resulting sub-cooled product into at least two streams: a first stream being expanded and fed to the second fractionation, and a second stream being expanded and reheated in heat exchange with the separated vapour stream from step (ii) before being fed to the second fractionation; (v) removing a hydrocarbon product stream low in nitrogen from the second fractionation; and (vi) removing a nitrogen rich stream from the second fractionation. | 04-19-2012 |
20120103012 | SUBLIMATION SYSTEMS AND ASSOCIATED METHODS - A system for vaporizing and sublimating a slurry comprising a fluid including solid particles therein. The system includes a first heat exchanger configured to receive the fluid including solid particles and vaporize the fluid and a second heat exchanger configured to receive the vaporized fluid and solid particles and sublimate the solid particles. A method for vaporizing and sublimating a fluid including solid particles therein is also disclosed. The method includes feeding the fluid including solid particles to a first heat exchanger, vaporizing the fluid, feeding the vaporized fluid and solid particles to a second heat exchanger and sublimating the solid particles. In some embodiments the fluid including solid particles is liquid natural gas or methane including solid carbon dioxide particles. | 05-03-2012 |
20120167621 | METHOD OF PROCESSING GAS ASSOCIATED WITH OIL - The invention relates to a method for producing combustible gas for gas engines from associated gas obtained during oil production, the associated gas containing methane, ethane, propane, hydrocarbons having more than three carbon atoms, and optionally propene, wherein a gaseous fraction and a liquid fraction are obtained by partially condensing the associated gas, wherein the condensation process is performed under such pressure and temperature conditions that the liquid phase is substantially free from methane, ethane, propane, and optionally propene, and that substantially the entire methane, ethane, propane, and optionally propene are contained in the gaseous phase. | 07-05-2012 |
20120324941 | PROCESS FOR PRODUCING A CONTAMINANT-DEPLETED HYDROCARBON GAS STREAM WITH IMPROVED HYDROCARBON RECOVERY - A process for producing a contaminant-depleted gas stream from a contaminated hydrocarbon feed gas stream comprises: (a) expanding the contaminated to obtain an expanded stream; (b) allowing at least part of the contaminants in the expanded stream to liquefy to form a dispersion of a contaminants enriched liquid comprising hydrocarbons and a gaseous phase with lowered contaminant content; (c) separating at least part of the contaminants enriched liquid from the gaseous phase in a first separator, thereby obtaining the contaminant-depleted gas stream and a liquid stream comprising contaminants and hydrocarbons; (d) separating hydrocarbons from the liquid stream in a second separator, thereby obtaining an overhead stream comprising hydrocarbons and a bottom stream depleted in hydrocarbons; and (e) leading the overhead stream to a point prior to step (c); further comprising the step of increasing the pressure of the liquid stream prior to step (d). | 12-27-2012 |
20130019633 | METHOD FOR PRODUCTION OF A COMPRESSED NATURAL GAS EQUIVALENT FROM LANDFILL GAS AND OTHER BIOGASES - Biogas is converted to a vehicle fuel equivalent to compressed natural gas high in methane in a simple, low cost process involving steps of refrigeration, non-regenerative activated carbon purification and carbon dioxide removal using low-pressure membrane technology. | 01-24-2013 |
20130036765 | PROCESS FOR TREATING A NATURAL GAS CONTAINING CARBON DIOXIDE - The disclosure includes a process for treating a natural gas containing carbon dioxide wherein the natural gas is separated by a cryogenic process in order to provide, on the one hand, a stream of liquid carbon dioxide, containing hydrocarbons, and, on the other hand, purified natural gas; at least one part of the natural gas is cooled in a first heat exchanger and then in a second heat exchanger before the cryogenic process and/or before a reflux to the cryogenic process; at least one part of the stream of liquid carbon dioxide is recovered in order to provide a stream of recycled carbon dioxide; the stream of recycled carbon dioxide is divided into a first portion and a second portion; the first portion is expanded and then heated in the first heat exchanger, in order to provide a first stream of heated carbon dioxide; the second portion is cooled, then at least one part of the second portion is expanded and then heated in the second heat exchanger, in order to provide a second stream of heated carbon dioxide; at least some of the hydrocarbons contained in the first stream of heated carbon dioxide and in the second stream of heated carbon dioxide are recovered by liquid/gas separation. | 02-14-2013 |
20130125581 | Ethylene Expansion for Low Temperature Refrigeration in Polyethylene Vent Recovery - Provided are processes and systems for recovering hydrocarbons in a vent stream from a polymerization process. The methods and systems may include the recovery of an olefin monomer from a polymerization vent gas using ethylene refrigeration to condense and recover the olefin monomers from the vent gas. In some embodiments, the methods and systems may also include compression and condensation of polymerization vent gas, recompression of ethylene refrigerant, and use of an expander compressor turbine device for ethylene refrigeration. | 05-23-2013 |
20130174604 | APPARATUS AND PROCESS FOR WORKING UP A HYDROGEN- AND METHANE-COMPRISING STREAM - The invention relates to an apparatus ( | 07-11-2013 |
20130186132 | System and Method of Capturing, Processing and Utilizing Stranded Natural Gas - A system and method for utilizing stranded natural gas produced by one wellsite or facility site at a second wellsite or facility site as natural gas in a fuel supply system to reduce the dependency of diesel fuel in operating equipment at the second wellsite or facility site. The system and method includes transporting the gas collected at the first wellsite or facility site to the second wellsite or facility site as a gas mixture of natural gas and hydrocarbon liquids in vapor form at a pressure and temperature to prevent drop out of the hydrocarbon liquids during transport. At the second wellsite or facility site, the gas mixture is processed to recover the hydrocarbon liquids and to provide a compressed natural gas free of the hydrocarbon liquids to a fuel system for combustion by wellsite or facility site equipment. | 07-25-2013 |
20130213085 | Hydrocarbon Mixture Processing System and Method using Vapor Recovery - Systems and methods for processing a hydrocarbon mixture wherein heat is generated from compression of recovered natural gas vapors and used to provide a heating medium for a heat exchanger. | 08-22-2013 |
20130239608 | SYSTEM AND METHOD FOR SEPARATING COMPONENTS IN A GAS STREAM - An incoming compressed gas, such as natural gas, is pre-cooled and the gas separated from any included liquid. The pre-cooled and separated gas is expanded using an expander to rapidly reduce pressure and corresponding temperature, as well as remove any components solidified by the temperature drop. An output stream from the expander, combined with other streams, is again gas/liquid separated. The output separated gas stream is sent through another expansion and gas/liquid separation, separating one or more other components, such that a final output gas is achieved. In the case of natural gas, the final output is, for example, methane, which may be fed back to cool the incoming gas prior to end use of the methane. | 09-19-2013 |
20130298601 | Sour NGL Stream Recovery - A method for recovering a sour natural gas liquids stream is provided. In one embodiment, a carbon dioxide recycle stream that comprises carbon dioxide, natural gas liquids, and acid gas is received. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids and the acid gas. In another embodiment, a system comprises piping and a separator. The piping is configured to receive a recycle stream that comprises an injection gas, natural gas liquids, and acid gas. The separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. The purified recycle stream comprises the injection gas, and the natural gas liquids stream comprises the natural gas liquids and the acid gas. | 11-14-2013 |
20130305777 | Heavy Hydrocarbon Processing in NGL Recovery System - A method for processing heavy hydrocarbons in an NGL recovery system is provided. In one embodiment, a feed stream is separated into a carbon dioxide recycle stream and a heavy hydrocarbon stream. The heavy hydrocarbon stream comprises carbon dioxide and natural gas liquids, and the heavy hydrocarbon stream comprises heavy hydrocarbons. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a set of process equipment comprises a first separator and a second separator. The first separator is configured to separate a feed stream into a recycle stream and a heavy hydrocarbons stream, and the second separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. | 11-21-2013 |
20130333417 | NGL Recovery Without Cryogenic Conditions, Membranes, and Carbon Dioxide Recovery Solvents - A method for recovering natural gas liquids without using cryogenic conditions, membranes, and carbon dioxide recovery solvents is provided. In one embodiment, a carbon dioxide recycle stream that comprises carbon dioxide and natural gas liquids is received. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. The carbon dioxide recycle stream, the purified carbon dioxide recycle stream, and the natural gas liquids are not subjected to cryogenic conditions, membranes, and carbon dioxide recovery solvents between being received and being separated into the purified carbon dioxide recycle stream and the natural gas liquids stream. | 12-19-2013 |
20140026613 | CRYOGENIC CO2 SEPARATION USING A REFRIGERATION SYSTEM - A refrigeration system for condensation of carbon dioxide (CO | 01-30-2014 |
20140075985 | PROCESS FOR OPTIMIZING REMOVAL OF CONDENSABLE COMPONENTS FROM A FLUID - A method for removing condensable components from a fluid containing condensable components. The method involves optimizing the temperature of an initial feed stream including the condensable components through heat exchange and cooling to condense liquids there from. The liquids are removed to form a gas stream which is then compressed and after-cooled to form a high pressure stream. A portion of the high pressure stream is expanded to form a cooled low pressure stream which is mixed with the initial feed stream to augment cooling and condensation of condensable components in the initial feed stream. | 03-20-2014 |
20140090416 | Cryogenic Separation of Synthesis Gas - A process and apparatus for separating a feed containing hydrogen, carbon monoxide, methane, and optionally nitrogen to form a product gas having a desired H | 04-03-2014 |
20140174122 | Natural Gas Liquids Recovery Plant - A compact transportable apparatus for flexibly recovering natural gas liquids from a natural gas stream feedstock includes a replaceable segment on one or more natural gas liquids transfer lines that is removable in the field without cutting the line for replacement with different replaceable part, for example, a J-T valve replacing a length of pipe, for flexibility in adjusting performance of the apparatus to match on site or changing conditions of the natural gas stream feedstock. Insulation surrounding the replaceable segment is discontinuous with insulation surrounding the remainder of the natural gas liquids transfer line in which the segment is interposed. This allows separation of the segment from such transfer line without disturbing the insulation of the remainder of that natural gas liquids transfer line if the replaceable segment is removed and replaced with a different replaceable segment. | 06-26-2014 |
20140250946 | METHOD FOR RECOVERING HYDROCARBON COMPOUNDS AND A HYDROCARBON RECOVERY APPARATUS FROM A GASEOUS BY-PRODUCT - There is provided a method for recovering hydrocarbon compounds from a gaseous by-products generated in the Fisher-Tropsch synthesis reaction, the method comprising a pressurizing step in which the gaseous by-products are pressurized, a cooling step in which the pressurized gaseous by-products are pressurized to liquefy hydrocarbon compounds in the gaseous by-products, and a separating step in which the hydrocarbon compounds liquefied in the cooling step are separated from the remaining gaseous by-products. | 09-11-2014 |
20140345319 | METHOD AND APPARATUS FOR REMOVING NITROGEN FROM A CRYOGENIC HYDROCARBON COMPOSITION - Nitrogen is removed from a cryogenic hydrocarbon composition. A least a first portion of the cryogenic hydrocarbon composition is fed to a nitrogen stripper column. The nitrogen stripper column operates at a stripping pressure. A stripping vapour is passed into the nitrogen stripper column, comprising at least a stripping portion of a compressed process vapour that has been produced from the nitrogen-stripped liquid which has been depressurized after drawing it from the nitrogen stripper column. Reflux is generated involving partially condensing overhead vapour of the nitrogen stripper column by passing heat from the overhead vapour to an auxiliary refrigerant stream at a cooling duty. An off gas consisting of a, non-condensed, vapour fraction from the overhead vapour is discharged. The cooling duty is adjusted to regulate a heating value of the vapour fraction being discharged. | 11-27-2014 |
20150121952 | PRODUCTION METHOD AND PRODUCTION SYSTEM FOR NATURAL GAS - A production method for natural gas according to the invention includes a step of adiabatically compressing a raw natural gas containing helium gas, a step of separating the helium gas from the raw natural gas by passing the adiabatically-compressed raw natural gas through a separation membrane unit, a step of conveying the raw natural gas from which the helium gas has been separated to a terminal through a pipe line, and a step of pressing the helium gas separated from the raw natural gas into an underground storage formation. | 05-07-2015 |
20160090542 | APPARATUS AND PROCESS TO CONDITION NATURAL GAS FOR TRANSPORTATION - A conditioning assembly to condition a flow of natural gas to reduce hydrate formation for transportation. The conditioning assembly includes a housing with an inlet for introducing a flow of natural gas and an outlet for delivering conditioned gas, wherein the housing is capable of containing natural gas at or above atmospheric pressure. The assembly also includes at least one tube and fin style heat exchanger contained within the housing configured to cool the flow of natural gas to a temperature below hydrate formation temperature and a collection arrangement to remove hydrates from the housing that form during cooling of the natural gas. Also disclosed is a method of conditioning natural gas, substantially corresponding to the assembly described above, wherein a constant flow of natural gas is conditioned by alternating the flow of natural gas between at least two heat exchangers configured in a parallel arrangement. | 03-31-2016 |