Abstract: 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 dioxi

Abstract: Acid gas is removed from a feed gas in an absorber that produces a treated feed gas and a rich solvent. The treated feed gas is passed through an H2S scavenger bed, and the H2S scavenger bed is regenerated using H2S depleted acid gas flashed from the rich solvent. Most preferably, the off gas from the regenerating bed is injected into a formation.

Abstract: 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.

Abstract: 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).

Abstract: Contemplated plants thermally integrate operation of a refinery component, and most preferably of a hydrocarbon splitter with LNG regasification to provide refrigeration duty and with a power cycle to provide the reboiler duty of the component. It should be noted that such configurations advantageously allow operation of the splitter at a reduced temperature and at reduced pressure, thereby increasing separation efficiency, while the power output is boosted using air intake chilling. Most notably, such process advantages are achieved by satisfying the heating duty of LNG regasification.

Abstract: The method allows liquefaction of a dry natural gas comprising water and heavy hydrocarbons containing more than five carbon atoms. The following stages are carried out: a) passing the dry natural gas through a water-adsorbent solid so as to obtain a water-depleted natural gas and a water-laden adsorbent solid, b) passing the water-depleted natural gas through a solid adsorbing heavy hydrocarbons comprising at least five carbon atoms so as to obtain a heavy hydrocarbon-depleted natural gas and a heavy hydrocarbon-laden adsorbent solid, c) liquefying the heavy hydrocarbon-depleted natural gas at a pressure above 40 bar abs so as to obtain a liquid natural gas under pressure, d) expanding the liquid natural gas under pressure obtained in stage c) to atmospheric pressure so as to obtain a liquid natural gas and a gas fraction.

Abstract: Methods and apparatus for the integration of a fractionation process and an olefin refrigeration system, wherein the fractionation process olefin effluent is supplied to the refrigeration system, can eliminate a fractionation process condenser and reflux drum typically present. A plurality of bottoms streams can be collected from the fractionation process. The olefin refrigerant can be supplied to alternate olefin refrigerant consumers, as desired. A column in the fractionation process can be refluxed with an olefin stream from refrigeration system, and olefin product can be collected or exported via line.

Abstract: A process and apparatus for liquefying a gas stream comprising hydrocarbons and sour species is provided in which the sour species are removed in liquefied form as the sweetened gas stream is progressively cooled to liquefaction temperatures. The process involves cooling the gas stream in a manner to produce a cooled gas stream comprising gaseous hydrocarbons and residual sour species. The cooled gas stream is then treated with a cold solvent to deplete the cooled gas stream of residual sour species. The resulting cooled sweetened gas stream is then further cooled to produce liquid hydrocarbons.

Abstract: 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.

Abstract: This invention relates to thioetherification processes for the removal of mercaptans in charge gas streams. In particular, the invention relates to thioetherification processes for the removal of mercaptans using a catalyst comprising palladium and silver.

Abstract: A device is disclosed which is designed to separate water, hydrocarbons and gases, based on the electric characteristics of the materials; the device utilises the different capacitance of water and hydrocarbons.

Abstract: A process for efficiently removing carbon dioxide from a hydrocarbon containing feed stream utilizing a membrane separation unit in conjunction with a heat exchanger and a carbon dioxide separation unit wherein the streams obtained in the carbon dioxide separation unit are utilized to provide the cooling effect in the heat exchanger.

Abstract: 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.

Abstract: 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

Abstract: Controlled RVP C5+ products are produced from feed gas in configurations and methods in which a heavier portion of the feed gas is fractionated into several streams having distinct RVP and in which a C5+ stream is produced from the lighter portion of the feed gas. The so formed streams are then combined to produce C5+ products with controlled RVP. Thus, RVP control is achieved without the need for external products for blending process streams derived from the feed gas.

Abstract: 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 H2. The gaseous effluent stream is then separated into a first product stream comprising said at least one aromatic compound and a second product stream comprising unreacted methane and H2. The second product stream is further separated into a methane-rich stream and a hydrogen-rich stream and at least part of the methane-rich stream is passed to LNG and/or pipeline gas production.

Abstract: A process and apparatus for separating at least part of a gaseous product from a feed stream which comprises contaminants. The process comprises: 1) providing the feed stream; 2) cooling the feed stream to a temperature at which a slurry stream is formed which comprises solid contaminant, liquid phase contaminant and the gaseous product; 3) introducing the slurry stream as obtained in step 2) via a plurality of tangentially directed inlet means into an upper part of a separation device, thereby creating a swirl of the slurry stream which allows at least part of the gaseous product to flow upwardly and solid contaminant and liquid phase contaminant to flow downwardly; 4) removing at least part of the gaseous product from the upper part of the device; and 5) removing a stream comprising liquid phase contaminant from a lower part of the device.

Abstract: A method of treating a hydrocarbon stream such as natural gas comprising at least the steps of: (a) providing a hydrocarbon feed stream (10); (b) passing the feed stream (10) through a first separation vessel (12) to provide a first gaseous stream (20) and a first liquid stream (30); (c) passing the first gaseous stream (20) from step (b) through a high pressure separation vessel (14) to provide a second gaseous stream (40) and a second liquid stream (80); (d) maintaining the pressure of the first gaseous stream (20) between step (b) and step (c) within +10 bar; (e) passing the first liquid stream (30) of step (b) through a stabilizer column (16) to provide a third gaseous stream (60) and a stabilized condensate (70); and (f) feeding the second liquid stream (80) from step (c) into the stabilizer column (16).

Abstract: A natural gas liquids (NGL) recovery system and method for separating NGLs from a feed gas is provided. The method includes receiving the feed gas; increasing a pressure of the feed gas by running the feed gas through a compressor connected to a gas turbine; diverting part of the feed gas from an output of the compressor and feeding the diverted part to a dryer; drying the diverted part to remove water and produce a dry gas; expanding the dry gas in a turbo-expander; separating the expanded gas into the NGL and fuel gas; and providing the fuel gas to the gas turbine as fuel without contamination.

Abstract: Systems and methods for removing a volatile catalyst poison from a liquid hydrocarbon are provided. In one embodiment, a process vent (106) can be introduced to a vent recovery system (108) to provide a recycle gas (110). A first portion of the recycle gas (112) and a liquid hydrocarbon (102) can be introduced to a stripper column (104) to provide a stripper vent gas (114) and a degassed liquid hydrocarbon (116) that can be introduced to a polymerization process.

Abstract: 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 C3+ hydrocarbon and a gas selected from the group consisting of carbon dioxide, nitrogen, air, and water, and separate the recycle stream into a NGL rich stream and a purified recycle stream.

Abstract: The invention relates to a process for producing a helium-enriched vapor stream, a methane-enriched vapor stream, and a liquid stream enriched in hydrocarbons heavier than methane from a pressurized, multicomponent, multiphase stream comprising methane (C1), helium (He) and hydrocarbons heavier than methane (C2+). The process includes cooling the multiphase stream to produce at least one vapor stream enriched in helium and at least one liquid stream, withdrawing at least a portion of the at least one vapor stream as a helium-enriched product stream, passing at least a portion of the at least one liquid stream to a demethanizer, withdrawing from the demethanizer a vapor enriched in methane (C1), and withdrawing from the demethanizer a liquid enriched in hydrocarbons heavier than methane (C2+).

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Produced natural gas containing carbon dioxide is dehydrated and chilled to liquefy the carbon dioxide and then fractionated to produce a waste stream of liquid carbon dioxide and hydrogen sulfide. Natural gas liquids may be first separated and removed before fractionation. After fractionation, the waste stream is pressurized and transmitted to a remote injection well for injection either for disposal of the waste stream and preferably to urge hydrocarbons toward the producing well. A hydrocarbon stream proceeds from fractionation to a methanol absorber system which removes carbon dioxide gas. The hydrocarbon stream is thereafter separated into at least hydrocarbon gas, nitrogen and helium. Some of the nitrogen is reintroduced into a fractionation tower to enhance the recovery of hydrocarbons. A methanol recovery system is provided to recover and reuse the methanol. The hydrocarbons are sold as natural gas; and the helium is recovered and sold. Excess nitrogen is vented.

Abstract: A semi-closed loop system for producing liquefied natural gas (LNG) that combines certain advantages of closed-loop systems with certain advantages of open-loop systems to provide a more efficient and effective hybrid system. In the semi-closed loop system, the final methane refrigeration cycle provides significant cooling of the natural gas stream via indirect heat transfer, as opposed to expansion-type cooling. A minor portion of the LNG product from the methane refrigeration cycle is used as make-up refrigerant in the methane refrigeration cycle. A pressurized portion of the refrigerant from the methane refrigeration cycle is employed as fuel gas. Excess refrigerant from the methane refrigeration cycle can be recombined with the processed natural gas stream, rather than flared.

Abstract: The use of an inexpensive heat exchanger for self-cooling of a fluid mixture is disclosed. The heat exchanger is made up of a plurality of plates and each plate has at least two channels defined in the plate. A fluid mixture is cooled and expanded, and separated, generating at least two process streams. One or more of the process streams are passed back to the heat exchanger to cool the fluid mixture.

Abstract: 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.

Abstract: Produced natural gas containing carbon dioxide is dehydrated and chilled to liquefy the carbon dioxide and then fractionated to produce a waste stream of liquid carbon dioxide and hydrogen sulfide. Natural gas liquids may be first separated and removed before fractionation. After fractionation, the waste stream is pressurized and transmitted to a remote injection well for injection either for disposal of the waste stream and preferably to urge hydrocarbons toward the producing well. A hydrocarbon stream proceeds from fractionation to a methanol absorber system which removes carbon dioxide gas. The hydrocarbon stream is thereafter separated into at least hydrocarbon gas, nitrogen and helium. Some of the nitrogen is reintroduced into a fractionation tower to enhance the recovery of hydrocarbons. A methanol recovery system is provided to recover and reuse the methanol. The hydrocarbons are sold as natural gas and the helium is recovered and sold. Excess nitrogen is vented.

Abstract: A method for cooling natural gas with a refrigerant, one non-limiting embodiment which includes: (A) compressing and cooling the refrigerant to a first pressure to form a compressed refrigerant; (B) splitting the compressed refrigerant into a first stream and a second stream both at the first pressure; (C) cooling the first stream to form a cooled first stream; (D) expanding the cooled first stream to a first expansion pressure to form an expanded first stream; (E) compressing the second stream to a second pressure higher than the first pressure, forming a higher pressure second stream; (F) cooling the higher pressure second stream to form a cooled second stream; (G) expanding the cooled second stream to a second expansion pressure to form an expanded second stream; and, (H) Cooling the natural gas with the expanded first stream and expanded second stream, forming a cooled natural gas stream.

Abstract: A hydrocarbon feed stream is separated in one or more separators to provide a hydrocarbon stream and at least one methane-lean stream comprising a first ethane-rich header feed stream. The hydrocarbon stream is heat exchanged with at least one refrigerant stream to provide at least one cooled hydrocarbon stream and at least one at least partially evapourated refrigerant stream. The first ethane-rich header feed stream is passed to at least one fuel gas header, from which header fuel gas is removed as at least one fuel gas stream.

Abstract: A method is described for production of LNG from an incoming feed gas (1) on an onshore or offshore installation, and it is characterised by the following steps: 1) the feed gas is led through a fractionation column (150) where it is cooled a separated in an overhead fraction with a reduced content of pentane (C5) and heavier components, and a bottom fraction enriched with heavier hydrocarbons, 2) the overhead fraction from the fractionation column is fed to a heat exchanger system (110) and is subjected to a partial condensation to form a two-phase fluid, and the two-phase fluid is separated in a suitable separator (160) a liquid (5) rich in LPG and pentane (C3-C5) which is re-circulated as cold reflux to the fractionation column (150), while the gas (6) containing lower amounts of C5 hydrocarbons and hydrocarbons heavier than C5 is exported for further processing in the heat exchanger system (110) for liquefaction to LNG with a maximum content of ethane and LPG 3) the cooling circuit for liquefaction of gas

Abstract: 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.

Abstract: 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.

Abstract: An apparatus and method for controlling a combustor on a vapor recovery process system which prevents excessive oxygen from entering a natural transmission line and which prevents the need to vent natural gas to the atmosphere.

Abstract: A method of altering the heating value of a liquefied natural gas by adding higher heating value components is disclosed. A portion of the liquefied natural gas is used to cool the higher heating value component stream prior to combining the higher heating value components with the liquefied natural gas to obtain a combined stream having a heating value greater than the liquefied natural gas.

Abstract: 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.

Abstract: 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.

Abstract: A pressure differential of a feed gas (110) between a compressor (120) and expander (160) is employed to cool the feed gas to condense and remove at least a portion of one component to produce a partially depleted feed gas from which another component may then be removed. In especially preferred aspects, the feed gas comprises C2-C5 hydrocarbons and hydrogen, wherein the hydrocarbons are condensed in the cooler and hydrogen is removed using a pressure swing adsorption unit (180).

Abstract: The present invention provides a method for recovering a natural gas contaminated with high levels of carbon dioxide. A gas containing methane and carbon dioxide is extracted from a reservoir containing natural gas, where carbon dioxide comprises at least 50 vol. % of the extracted gas. The extracted gas is oxidized with an oxygen containing gas in the presence of a partial oxidation catalyst at a temperature of less than 600° C. to produce an oxidation product gas containing hydrogen, carbon monoxide, and carbon dioxide. The oxidation product gas is then utilized to produce a liquid hydrocarbon or a liquid hydrocarbon oxygenate.

Abstract: For liquefying a hydrocarbon-rich fraction, in particular natural gas, the hydrocarbon-rich fraction which is to be liquefied is merely cooled and liquefied against a coolant mixture, and the coolant mixture, before its cooling, is separated into a gas phase and a liquid phase, and wherein the gas (5) and the liquid phases (6) are cooled (E) separately and not until after cooling (E) has been performed are they expanded (a, b) and recombined (8).

Abstract: Disclosed is a system for reducing a heating value of natural gas. The system includes a heat exchanger to liquefy a portion of components having high heating values, a gas-liquid separator to separate the liquefied component, and a nitrogen adding mechanism to add nitrogen to remaining non-liquefied components. The system includes an additional heat exchanger to cool and liquefy the remaining non-liquefied components after the gas-liquid separator separates the liquefied component from the natural gas. The heat exchangers employ cold heat generated upon regasification of LNG. The system can reduce the heating value of natural gas composed of a variety of hydrocarbon components according to requirements of a place of demand by separating the component with the higher heating value from the natural gas to allow the separated component to be used as fuel, thereby reducing an overall size and operating costs of the system.

Abstract: A liquid hydrocarbon slug-containing vessel for incorporation into a system integrating a low-pressure separator with a vapor recovery process system, and a method for regulating the temperature of a gas to be compressed by a two stage compressor so as to prevent liquification of the gas and to prevent over-heating of the compressor.

Abstract: 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.

Abstract: 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.

Abstract: An LNG facility employing an enhanced fuel gas control system. The enhanced fuel gas control system is operable to produce fuel gas having a substantially constant Modified Wobbe Index (MWI) during start-up and steady-state operation of the LNG facility by processing one or more intermediate process streams in a fuel gas separator. In one embodiment, the fuel gas separator employs a hydrocarbon-separating membrane, which can remove heavy hydrocarbons and/or concentrate nitrogen from the incoming process streams.

Abstract: A novel process is disclosed which produces a CO-rich stream from a stream containing hydrogen, carbon monoxide, methane, and components heavier than methane. The process utilizes a combined CO purification and demethanizer column (5) which reduces the overall capital cost of the process, and efficient heat integration which reduces the energy required by the process. This process is useful in recovering a CO-rich stream (10) from the effluent (1) of an autothermal cracking reactor. It is particularly useful when one or more of the heavy components (6) has a higher value as pure product than when admixed with methane (11), and when product of a purified hydrogen stream (8) is also desirable.

Abstract: The invention provides a method of removing solid carbon dioxide from cryogenic equipment, including the steps of: (a) introducing a stream including ethane to the cryogenic equipment to convert solid carbon dioxide to liquid form whereby a mixture of liquid ethane and liquid carbon dioxide is formed; and (b) removing the mixture of liquid ethane and liquid carbon dioxide from the cryogenic equipment. In particular, the method can be used in a liquefied natural gas (LNG) plant wherein cryogenic equipment contains LNG, and the method includes the steps of: (a?) removing the LNG from the cryogenic equipment; (a) introducing a stream including ethane to convert solid carbon dioxide to liquid form whereby a mixture of liquid ethane and liquid carbon dioxide is formed; and (b) removing the mixture of liquid ethane and liquid carbon dioxide from the cryogenic equipment. The result is an effective cleaning method for fouled LNG equipment.

Abstract: 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.