Method of removing metals from hydrocarbon feedstock using esters of carboxylic acids

Method of removing metals from hydrocarbon feedstock using esters of carboxylic acids, and additives for the same, are provided, wherein hydrocarbon stream including crude oil containing metals and salts thereof, wherein metal is calcium and its salt is calcium naphthenate, is mixed with an effective metal-removing-amount of an aqueous extraction-solution of non-precipitating and non-fouling additive comprising a chemical compound selected from a group consisting of methyl or ethyl or propyl or isopropyl mono- and/or di-esters of any one of the carboxylic acids selected from the groups consisting of maleic acid, maleic anhydride, and fumaric acid, or an appropriate combination of said esters, or an appropriate combination of any of said esters with any of said carboxylic acids to form a hydrocarbonous phase and an aqueous phase containing the metal ions; and separating aqueous phase.

Process, Method, and System for Removing Heavy Metals from Fluids

A method for concurrently transporting and removing trace amount levels of heavy metals such as mercury from produced fluids such as natural gas, with the injection of a complexing agent and a hydrate inhibitor into the pipeline for use in transporting the produced fluid. Volatile mercury in the natural gas is removed while the produced fluid is being transported in the pipeline, with the hydrate inhibitor suppressing or decreasing the formation of the hydrate that would cause plugging in the pipeline. The complexing agent reacts with the volatile mercury in the natural gas, forming precipitate or soluble mercury complexes in the aqueous phase. The aqueous phase containing the hydrate inhibitor, unreacted complexing agent, and mercury complexes is subsequently recovered and can be re-used in the pipeline. 1. A method for concurrently transporting and removing a trace amount of volatile mercury in a natural gas stream extracted from a subterranean formation , comprising:obtaining a produced fluid containing the natural gas and produced water from the subterranean formation;transporting the produced fluid in a pipeline extending from a well head above the subterranean formation to a production facility;injecting into the pipeline carrying the produced fluid an effective amount of a hydrate inhibitor, a complexing agent and optionally at least one of a defoamer and a demulsifier;wherein the complexing agent extracts volatile mercury in the natural gas, forming non-volatile mercury complexes in the produced water, for a treated produced fluid having a concentration of hydrate particles of less than 50 volume % and a reduced concentration of volatile mercury.2. The method of claim 1 , further comprising:separating the treated produced fluid to generate a natural gas stream having a reduced concentration of volatile mercury, and a aqueous mixture of produced water, recovered hydrate inhibitor, unreacted complexing agent, and non-volatile mercury complexes;heating the ...

METHOD AND APPARATUS FOR SEPARATING ALKYL AROMATIC HYDROCARBON

A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex. 1. An apparatus for separating an alkyl aromatic hydrocarbon comprising: an acid-base extraction column;and a complex exchange column, wherein the acid-base extraction column comprises: a pipe for feeding a mixture comprising an alkyl aromatic hydrocarbon and one or more isomers thereof; a pipe for feeding a first diluent; a pipe for feeding a complex solution of an eliminating agent and a superacid withdrawn from a column bottom of the complex exchange column; a pipe for discharging the alkyl aromatic hydrocarbon as a complex solution of the alkyl aromatic hydrocarbon and the superacid from a column bottom of the acid-base extraction column; and a pipe for discharging a mixed liquid comprising the eliminating agent separated by the complex exchange, unextracted extraction residual isomers, and the diluent from a column top of the acid-base extraction column, andwherein the complex exchange column comprises: a pipe for feeding the complex solution of the alkyl aromatic hydrocarbon and the superacid discharged from the column bottom of the acid-base extraction column; a pipe for feeding a second diluent and the eliminating agent; a pipe for discharging a mixed liquid comprising the extracted alkyl aromatic hydrocarbon, the eliminating ...

Removal of carbonyls from gaseous hydrocarbon streams

Disclosed are methods and systems for removing a highly reactive polymer precursor such as acetaldehyde and acetone from a hydrocarbon gas stream. Embodiments may disclose a method for removal of carbonyls comprising providing a hydrocarbon gas stream comprising a carbonyl, providing a liquid bisulfite stream, and contacting the hydrocarbon gas stream and liquid bisulfite stream in a mass transfer device wherein at least a portion of the carbonyl reacts with the bisulfite to form a solid adduct that is soluble in the liquid bisulfite stream.

METHOD AND APPARATUS FOR SEPARATING ALKYL AROMATIC HYDROCARBON

A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex. 1. A method for separating an alkyl aromatic hydrocarbon comprising:a step of adding a first diluent and an extractant comprising a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture; anda step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out a complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.2. The method according to claim 1 , further comprising a step of adding as the extractant a complex of the eliminating agent with the superacid formed by the complex exchange together with the second diluent to the mixture to thereby recycle the complex.3. The method according to claim 1 , comprising a step of adding an eliminating agent having the relative basicity in a range of 0.1 to 2.0 with respect to the alkyl aromatic hydrocarbon and the second diluent to the complex to carry out a complex exchange ...

GENERATORS FOR 1-METHYLCYCLOPROPENE RELEASE FROM CARRIER COMPLEX

Providing a method for generating and releasing 1-MCP gas from a complex carrier through the use of a 1-MCP generator that enables the application of at least one physical, releasing force to a carrier complex and/or mixture comprising water and the carrier complex, or the interaction of steam with a carrier complex and/or mixture comprising water and the carrier complex, over a determined period of time. 1. A method of releasing 1-MCP gas comprising: 'wherein the mixture is maintained at a temperature range of 1° C. to 100° C. for at least 0.5 hours in the removable mixing tank by a temperature control system,', 'establishing a mixture of water and a carrier complex, the carrier complex comprising 1-MCP complexed with at least one carrier, the carrier consisting of at least one of an encapsulant(s) and adsorbent(s), in an interior space of a removable mixing tank; and'} 'wherein the compliant impurity profile is at least one of below 0.1% of the total 1-MCP gas released and the levels of chlorinated compounds 1-chloro-2-methylpropene (1-CMP) and 3-chloro-2-methylpropene (3-CMP) below 0.05% of total 1-MCP gas released,', 'releasing 1-MCP gas from the carrier complex by the application of a releasing force consisting of at least one of a rotational, stirring, spinning, vibrational, shaking, oscillatory, gyratory and steam force, the releasing force provided through operational connection of the removable mixing tank to a force generation mechanism, wherein the applied releasing force promotes 1-MCP dissociation from the carrier and release of 1-MCP gas, the released 1-MCP gas having a compliant impurity profile and a desirable foam by-product profile,'}wherein the desirable foam by-product profile can comprise air trapped in hydrophilic and hydrophobic groups on alpha-cyclodextrin in amounts that avoid spillage from the removable mixing tank.2. The method of claim 1 , wherein 1-MCP gas release process occurs within a 1-MCP generator comprising the removable mixing ...

ADVANCED OXIDATIVE COUPLING OF METHANE

The present disclosure provides a method for generating higher hydrocarbon(s) from a stream comprising compounds with two or more carbon atoms (C), comprising introducing methane and an oxidant (e.g., O) into an oxidative coupling of methane (OCM) reactor that has been retrofitted into a system comprising an ethylene-to-liquids (ETL) reactor. The OCM reactor reacts the methane with the oxidant to generate a first product stream comprising the Ccompounds. The first product stream can then be directed to a pressure swing adsorption (PSA) unit that recovers at least a portion of the C compounds from the first product stream to yield a second product stream comprising the at least the portion of the Ccompounds. The second product stream can then be directed to the ETL reactor. The higher hydrocarbon(s) can then be generated from the at least the portion of the Ccompounds in the ETL reactor. 1. A method for generating higher hydrocarbon(s) from a stream comprising compounds with two or more carbon atoms (C) , comprising:{'sub': '2+', '(a) introducing methane and an oxidant into an oxidative coupling of methane (OCM) reactor that has been retrofitted into a system comprising an ethylene-to-liquids (ETL) reactor, wherein said OCM reactor reacts said methane with said oxidant to generate a first product stream comprising said Ccompounds;'}{'sub': 2+', '2+, '(b) directing said first product stream to a pressure swing adsorption (PSA) unit that recovers at least a portion of said Ccompounds from said first product stream to yield a second product stream comprising said at least said portion of said C compounds;'}(c) directing said second product stream to said ETL reactor; and{'sub': '2+', '(d) generating said higher hydrocarbon(s) from said at least said portion of said C compounds in said ETL reactor.'}2. The method of claim 1 , further comprising:{'sub': '2', 'recovering a light stream comprising (i) hydrogen and (ii) carbon monoxide (CO) and/or carbon dioxide (CO) from ...

Methods of removing carbonyl-containing organic compounds

Provided are methods of treating a mixture, such as a hydrocarbon mixture, that includes one or more C2-C4 carbonyl containing organic compounds. The methods may include contacting a hydrocarbon mixture with an aqueous liquid including an agent. The agent may reduce the amount of one or more C2-C4 carbonyl containing organic compounds in the mixture.

Catalyst intended for desulfurization/demercaptanization/dehydration of gaseous hydrocarbons

This application is in the field of technologies for desulfurization and demercaptanization of raw gaseous hydrocarbons (including natural gas, tail gas, technological gas, etc., including gaseous media). It can be used for simultaneous dehydration and desulfurization/demercaptanization of any kind of raw gaseous hydrocarbons.

GENERATORS FOR 1-METHYLCYCLOPROPENE RELEASE FROM CARRIER COMPLEX

Providing a method for generating and releasing 1-MCP gas from a complex carrier through the use of a 1-MCP generator that enables the application of at least one physical, releasing force to a carrier complex and/or mixture comprising water and the carrier complex, or the interaction of steam with a carrier complex and/or mixture comprising water and the carrier complex, over a determined period of time. 1. A method of releasing 1-MCP gas comprising: 'wherein the mixture is maintained at a temperature range of 1° C. to 100° C. for at least 0.5 hours in the mixing tank by a temperature control system;', 'establishing a mixture of water and a carrier complex, the carrier complex comprising 1-MCP complexed with at least one carrier, the carrier consisting of at least one of an encapsulant(s) and adsorbent(s), in an interior space of a mixing tank; and'} 'wherein the compliant impurity profile is at least one of below 0.1% of the total 1-MCP gas released and the levels of chlorinated compounds 1-chloro-2-methylpropene (1-CMP) and 3-chloro-2-methylpropene (3-CMP) below 0.05% of total 1-MCP gas released.', 'releasing 1-MCP gas from the carrier complex by the application of a releasing force consisting of at least one of a rotational, stirring, spinning, vibrational, shaking, mixing, oscillatory, gyratory and steam, the releasing force provided through operational connection of the mixing tank to a motor, wherein the applied releasing force promotes 1-MCP dissociation from the carrier and release of 1-MCP gas, the released 1-MCP gas having a compliant impurity profile;'}2. The method of claim 1 , wherein 1-MCP gas release process and its application to respiring produce is conducted within a secondary location.3. The method of claim 2 , wherein release of 1-MCP gas occurs outside the secondary location and then the released 1-MCP is delivered and applied to respiring produce within the secondary location.4. The method of claim 2 , wherein the secondary location provides a ...

Method for Recycling Urea in Urea Adduct Process

The present invention discloses a method for recycling urea in the process of separating and purifying unsaturated substances through a urea adduction method. The method comprises the following steps: liposoluble substances containing target unsaturated components are used as raw materials, and subjected to urea adduction, crystallization and filtration to produce a filtrate, from which the specific unsaturated components are obtained; the urea adduct is dissolved in a polar solvent, and after the adducted adducts are layered and released, adding a certain solvent to the urea solution to adjust the polarity, then cooling for crystallization, and recycling the urea. The method can realize complete release of the adducted components and recycling and reuse of urea, and the process is simple, the recovery rate is high, and the adduction effect is not influenced when recycling urea for reuse, and the production cost of the urea adduct is reduced, thus alleviating the adverse impact of urea discharges on the environment. 1. A method of recycling urea in a process of purifying unsaturated substances through a urea adduction method , comprising the following steps:(1) urea adduction: adducting an aqueous solution including a raw material, urea and a lower alcohol aqueous solution at a temperature of 45-65° C., wherein a ratio of the raw material to the urea is 1:1-4, a ratio of the urea and the lower alcohol is 1:3-6, and then crystallizing at 0-10° C. of crystallization temperature; and afterwards filtering to obtain a filtrate of unsaturated substances and a filter cake of urea-saturated substance adducts; and then removing solvent from the filtrate to obtain target unsaturated components, and the filter cake is a urea adduct;(2) releasing the urea adduct: adding a polar solvent to the urea adduct to form a solution, wherein the polar solvent is water, lower alcohol, or a mixture of water and lower alcohol in any proportion, then heating and stirring the solution for ...

PROCESS FOR TREATING A LIQUID HYDROCARBON STREAM

One exemplary embodiment can be a process for treating a liquid hydrocarbon stream. The process can include passing the liquid hydrocarbon stream previously contacted with a solvent having an alkanolamine consisting of diethanolamine, a methyl diethanolamine, or a mixture thereof, and an alkali to a vessel. Generally, the vessel contains a coalescing zone for removing at least one of hydrogen sulfide and carbonyl sulfide. 1. A process for treating a liquid hydrocarbon stream , comprising:passing the liquid hydrocarbon stream previously contacted with a solvent comprising an alkanolamine consisting of diethanolamine, a methyl diethanolamine, or a mixture thereof, and an alkali to a vessel wherein the vessel contains a coalescing zone for removing at least one of hydrogen sulfide and carbonyl sulfide.2. The process according to claim 1 , wherein the coalescing zone comprises at least one of a mesh and one or more vanes.3. The process according to claim 2 , wherein the coalescing zone comprises the mesh wherein the mesh comprises a coating.4. The process according to claim 3 , wherein the coating comprises a hydrophilic coating.5. The process according to claim 1 , wherein the coalescing zone comprises a mesh wherein the mesh comprises one or more metal wires or fiberglass.6. The process according to claim 1 , wherein both hydrogen sulfide and carbonyl sulfide are removed.7. The process according to claim 1 , wherein the liquid hydrocarbon stream and the solvent form a combined stream passed through a contacting zone upstream of the vessel.8. The process according to claim 1 , wherein the contacting zone comprises a static mixer.9. The process according to claim 1 , wherein the solvent comprises the diethanolamine.10. The process according to claim 1 , wherein the alkali comprises at least one of an ammonia claim 1 , a potassium hydroxide and a sodium hydroxide.11. The process according to claim 10 , wherein the alkali comprises the sodium hydroxide.12. The process ...

Separations With Ionic Liquid Solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit. 1. A method comprising:providing a process stream comprising an olefin;capturing at least a portion of the olefin from the process stream by an ionic liquid solvent; andrecovering at least a portion of a captured olefin from the ionic liquid solvent.2. The method of claim 1 , wherein the ionic liquid solvent comprises a cation and an anion; wherein the cation comprises an ethylmethylimidazolium cation claim 1 , a butylmethylimidazolium cation claim 1 , a butylmethylpyridinium cation claim 1 , or combinations thereof; wherein the anion comprises a bis(trifluoromethanesulfonyl)amide anion claim 1 , a hexafluorophosphate anion claim 1 , a trifluoromethanesulfonate anion claim 1 , a dicyanamide anion claim 1 , a tetrafluoroborate anion claim 1 , a thiocyanate anion claim 1 , a nitrate anion claim 1 , a sulfonate anion claim 1 , a methylsulfate anion claim 1 , or combinations thereof.3. The method of claim 1 , wherein the ionic liquid solvent comprises a Ag(I) salt claim 1 , a Cu(I) salt claim 1 , or combinations thereof.4. The method of claim 3 , wherein the Ag(I) salt comprises silver(I) bis(trifluoromethanesulfonyl)amide claim 3 , silver(I) trifluoromethanesulfonate claim 3 , silver(I) nitrate claim 3 , or combinations thereof.5. The method of claim 3 , wherein the Cu(I) salt comprises ...

METHOD FOR ISOLATING DIAMONDOIDS

Method for separating the diamondoids by liquid chromatography from a sample of iso-alkanes and cycloalkanes, or from a mixture of organic compounds, this method comprising introducing the sample into a column comprising a stationary phase comprising a material capable of forming inclusion complexes with the diamondoids, eluting with an eluent, and collecting the eluted fraction. 119.-. (canceled)20. Method for separating diamondoids from a sample of iso-alkanes and cycloalkanes comprising a separation step by liquid chromatography , this separation step comprising:introducing the sample into a column comprising a stationary phase comprising a material capable of forming inclusion complexes with the diamondoids, said material being selected from the cyclodextrins,eluting with an eluent, andcollecting the eluted fractions.21. Method according to claim 20 , in which the material capable of forming inclusion complexes with the diamondoids is β-cyclodextrin.22. Method according to claim 20 , in which the eluent is selected from mixtures of n-alkane and alkanol.23. Method according to claim 22 , in which the eluent is a pentane/isopropanol mixture (98%/2% vol/vol).24. Method according to claim 20 , in which the column is an HPLC column connected to an HPLC device claim 20 , the method being implemented with a pressure in the column ranging from 10 to 30 bars.25. Method for isolating the diamondoids from a mixture of organic compounds by a method comprising the following steps:a first separation step by liquid chromatography of a fraction of iso-alkanes and cycloalkanes from the mixture of organic compounds,optionally a step of preparation of the fraction of iso-alkanes and cycloalkanes, and{'claim-ref': {'@idref': 'CLM-00020', 'claim 20'}, 'a second separation step of the diamondoids from a sample of iso-alkanes and cycloalkanes according to the method according to .'}26. Method according to claim 25 , in which the first separation step of iso-alkanes and cycloalkanes ...

Process and apparatus for purifying a hydrocarbon stream comprising linear alpha-olefins (lao) from amines

A process for purifying linear a-olefins, comprises: providing an organic phase comprising a linear a-olefin; providing an alkaline aqueous phase I; providing an amine; mixing the linear a-olefin, alkaline aqueous phase I, and amine; separating the aqueous phase I from the organic phase; adding water to the organic phase thereby forming an aqueous phase II; bringing into contact the organic phase with carbon dioxide; separating the aqueous phase II which comprises a solid formed in the organic phase when contacted with carbon dioxide; wherein the purified linear a-olefins are obtained in the organic phase.

Process for separation of unsaturated hydrocarbons

There is described the separation of aliphatically unsaturated hydrocarbons from mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is in contact with a film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, noble metal, mercuric, cuprous or other metal ions, and mixtures of these metal ions, with or without other cations, may be used. The separation of ethylene from ethane and methane is of particular interest.

Method of separating aliphatically unsaturated hydrocarbons by contacting said hydrocarbons with a solid water-insoluble, semi-permeable film membrane

THERE IS DESCRIBED THE SEPARATION OF ALIPHATICALLY-UNSATURATED HYDROCARBONS FROM GASEOUS MIXTURES BY THE COMBINED USE OF FLOODED-CELL, LIQUID BARRIER PERMEATION AND METAL COMPLEXING TECHNIQUES. THE LIQUID BARRIER IS DISPOSED AS A CONTINUOUS, DISTINCT LIQUID PHASE IN CONTACT WITH A FILM MEMBRANE, AND THE BARRIER CONTAINS COMPLEXFORMING METAL IONS IN AQUEOUS SOLUTION. THE HYDROCARBON FEED GAS IS CONTACTED WITH THE LIQUID BARRIER CONTAINING A SURFACE-ACTIVE AGENT IN SOLUTION IN THE LIQUID BARRIER. THE SURFACE AGENT SERVES TO IMPROVE THE SELECTIVITY OF THE SEPARATION. THE METAL IONS IN THE LIQUID BARRIER MAY BE, FOR EXAMPLE, NOBLE METAL, NICKEL, MERCURIC, CUPROUS OR OTHER METAL IONS, AND MIXTURES OF THE METAL IONS, WITH OR WITHOUT OTHER CATIONS, MAY BE USED. THE SEPARATION OF ETHYLENE FROM ETHANE AND METHANE IS OF PARTICULAR INTEREST.

Process for separating gas by diffusion

There is described the separation of aliphatically-unsaturated hydrocarbons of two to four carbon atoms from gaseous mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is in contact with a film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The film membrane is contacted with a swelling agent to increase the selectivity of the separation and, preferably, increase permeation by the aliphatically unsaturated hydrocarbon to be separated. The metal ions in the liquid barrier may be, for example, noble metal, nickel, mercurous, cuprous or other metal ions, and mixtures of the metal ions, with or without other cations, may be used. The separation of ethylene from ethane and methane is of particular interest.

Process of separating complexable materials employing semipermeable polymer film

There is described the preparation of hydrophilic, semipermeable film membranes having an increase in pores and containing complex-forming metals. The films can be formed from solutions having film-forming material and pore-forming material dissolved in a solvent. The films can be useful for separating a component, e.g. an aliphatically-unsaturated hydrocarbon, from mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is at least partially within the hydrophilic film membrane during use, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, noble metal, nickel, mercurous, cuprous or other metal ions, and mixtures of these metal ions, and the aqueous solution may contain other cations. The separation of ethylene from ethane and methane is of particular interest.

Membrane process and product

There is described an improved membrane-liquid barrier system of the type containing complex-forming, silver-containing ion component in an aqueous solution, and an improved process in which the membrane-liquid barrier combination can be employed to separate olefinically-unsaturated hydrocarbons. The membrane is in contact with an aqueous solution having dissolved therein complex-forming silver-containing ions, and further includes small but effective amounts of hydrogen peroxide to retard reduction of the ionic silver to elemental silver.

Membrane process for separating materials

A process is disclosed for separating components, e.g., olefinically-unsaturated hydrocarbons, from mixtures with other materials by liquid barrier permeation and metal-complexing techniques using a semi-permeable membrane and a partial pressure differential across the membrane for the material being separated. The process is characterized by the use of elevated pressure on the feed side of the membrane, preferably at least about 200 psig, a low total pressure differential, if any, across the membrane, and preferably a partial pressure of the material being separated on the exit side of the membrane which is at least about 20 psi less than on the feed side. The separated material may be removed with advantage by the use of a liquid solvent in which the material is soluble, and preferably the concentration of the material in the solvent is up to about 25 weight percent of saturation when the solvent is charged to the exit side of the membrane. The separation of ethylene from its mixture with methane and ethane is of particular interest.

Separation d'hydrocarbures a non saturation aliphatique

Fluid separation process and membrane

There is described an improved separation membrane-liquid barrier system of the type containing complex-forming, metal-containing ionic components, and an improved separation process in which the membrane-liquid barrier is employed. The membrane is in contact with an aqueous liquid barrier containing cuprous ions, such as a cuprous salt or a cuprous salt complex, e.g. a CuCl complex, preferably a CuCl--NH 4 Cl--HCl complex, and the barrier is in contact with a reducing agent that retards the complexing Cu + ion from being oxidized to Cu + 2 . The reducing agent is relatively stable when positioned in the membrane and is not unduly oxidized by air nor does it unduly interfere with the essential function of the cuprous ions during the separation process. Elemental copper may function as a reducing agent that retards oxidation of Cu + ion to Cu + 2 . The liquid barrier containing complex-forming cuprous ions can be subjected to a strong reducing agent during the separation process to reduce some of the cuprous ions to elemental copper.

Use of aqueous, non-sweep liquid during membrane separation

A material is separated from a fluid mixture by contacting the mixture containing the material with a first side of essentially solid, water-insoluble, hydrophilic, semi-permeable membrane in contact with an aqueous liquid barrier having ions which combine with the material to be separated to form a water-soluble complex. The partial pressure of the material on a second side of the semi-permeable membrane is sufficiently less than the partial pressure of the material in the mixture to provide separated material on the second side of the membrane. The separated material can be removed from the vicinity of the second side of the membrane by a gas stream. The second side of the membrane is contacted with an aqueous liquid medium to reduce the loss of the aqueous liquid barrier from the membrane which may otherwise decrease in separation efficiency during use due to water losses. The gas stream used to remove the separated material may be supersaturated with the aqueous medium, e.g. water, and may contact the membrane with the aqueous medium via condensation. Alternatively, the aqueous medium such as water may be applied by a continuous or intermittent film, spray or mist. The process is particularly useful for separating olefins, especially ethylene.

Membrane-mediated extraction of olefins

The present disclosure provides processes for the recovery of olefins from a mixture. Such processes include: (1) passing the mixture to a first surface of a porous membrane, wherein the porous membrane is in a first contactor; (2) passing a complexing composition to a second surface of the porous membrane in the first contactor, wherein the complexing composition includes a metal ion that is capable of reversibly binding the olefins; (3) extracting at least a portion of the olefins from the mixture; wherein extracting includes binding the olefins to the metal ion of the complexing composition; and wherein extracting produces a mixture depleted in olefins and a complexing composition enriched in olefins; and (4) inducing a release of the olefins from the complexing composition enriched in olefins. In some embodiments, the processes of the present disclosure can further include passing the complexing composition enriched in olefins to a second contactor; wherein the induction step occurs in the second contactor. In other embodiments, the processes of the present disclosure can further include passing the released olefins from the induction step to a third contactor. In additional embodiments, the processes of the present disclosure can also include recycling the complexing composition after the olefins are released in the induction step.

Procede de separation d'hydrocarbures non satures

Membrane process for separating materials

PROCESS FOR THE SEPARATION OF ALIPHATICALLY UNSATURATED HYDROCARBONS

Process for isolating unsaturated c2-c8 aliphatic hydrocarbons

1431946 Separating hydrocarbons STANDARD OIL CO 4 May 1973 [12 May 1972 13 Sept 1972] 21365/73 Heading C5E Aliphatically unsaturated hydrocarbon having 2 to 8 carbon atoms is separated from a mixture by selectively transferring it across a barrier which comprises an aqueous component containing metal ions which combine with the unsaturated hydrocarbon to form a water soluble complex and a semi-permeable member which is solid, water-insoluble and impermeable to the aqueous component; the partial pressure of the unsaturated hydrocarbon on the second side of the barrier being maintained lower than that on the first side so that the unsaturated hydrocarbon is released on the second side of the barrier. The metal ions can be silver, zinc or cuprous ammonium and the aqueous component can comprise silver nitrate, optionally together with UO 2 (NO 3 ) 2 or a nitrate of Cr, Ni, Zn, Cd, Al, Li, Sr, Ca, Mg, Co, Fe<SP>3+</SP>, Na, Pb, NH 4 or K. The semi-permeable membrane can comprise polyurethane, nylon, sodium cellulose xanthate or an ethylene glycol monomethacrylate polymer. The process can be used to separate acetylene and/or ethylene from mixtures which also comprise methane and/or ethane. Many examples are given in which the aqueous component is in the form of a liquid covering the first side of the semi-permeable membrane which is either in the form of a flat sheet or a hollow tube immersed in the liquid; alternatively the aqueous component can be held within the semi-permeable membrane, e.g. by being absorbed therein or absorbed on a material such as cellulose acetate which is held between two semi-permeable sheets.

Method of making a semi-permeable, essentially water-insoluble, hydrophilic nylon membrane and resultant product

There is described the preparation of hydrophilic, semi-permeable film membranes having an increase in pores and containing complex-forming metals. The films can be formed from solutions having film-forming material and pore-forming material dissolved in a solvent. The films can be useful for separating a component, e.g. an aliphatically-unsaturated hydrocarbon, from mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is at least partially within the hydrophilic film membrane during use, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, noble metal, nickel, mercurous, cuprous or other metal ions, and mixtures of these metal ions, and the aqueous solution may contain other cations. The separation of ethylene from ethane and methane is of particular interest.

Separating process oif unsaturated hydro carbons

Unsatd. aliphatic hydrocarbons were sepd. from gaseous C2-8 hydrocarbon mixts. by contacting the gaseous mixts. with a liq. barrier consisting of complex-forming metal ions in aq. soln. and supported with water insoluble semipermeable membrane which is substantially solid and impermeable to liq. barrier. The partial pressure of gas-fed cell to evolve the unsatd. hydrocarbon from aq. barrier was higher than that of the other.

Patent FR2400384B1

Membrane process for separating materials

Werkwijze voor het uit een fluide mengsel afscheiden van een materiaal.

Procede de separation

MEMBRANE PROCESS FOR MATERIAL SEPARATION

Mebranverfahren zur abtrennung eines gasfoermigen aliphatisch ungesaettigten kohlenwasserstoffes, wie z.b. aethylen, oder von gemischen solcher kohlenwasserstoffe aus einem gasgemisch

Unsaturated hydrocarbon separation and recovery process

In a process for the separation of unsaturated hydrocarbons from mixtures containing them, the feed is led through a microporous hollow fibre membrane, while an aqueous solution of a complexing agent flows at the other side of the membrane. The unsaturated hydrocarbon forms a reversible water-soluble complex. After separation of the complex, the latter is led along a second membrane under conditions which lead to the dissociation of the complex.

Process for the separation of light olefins from paraffins

Verfahren zur Abtrennung leichter Olefine von Paraffinen, die in Mischungen enthalten sind, welche gegebenenfalls auch Wasserstoff enthalten, umfassend, dass man die Mischungen in Kontakt mit einer wässrigen Lösung einer oder mehrerer Silberverbindungen, bevorzugt Silbernitrat, und einer oder mehrerer Eisen(III)-Verbindungen, bevorzugt Eisen(III)-nitrat, bringt. Process for the separation of light olefins from paraffins which are contained in mixtures which optionally also contain hydrogen, comprising the mixtures in contact with an aqueous solution of one or more silver compounds, preferably silver nitrate, and one or more iron (III) compounds , preferably iron (III) nitrate, brings.

Mebranverfahren zur abtrennung eines gas- foermigen aliphatisch ungesaettigten kohlen- wasserstoffes, wie z.b. aethylen, oder von gemischen solcher kohlenwasserstoffe aus einem gasgemisch

Membrane process for separating materials

PROCESS FOR SEPARATING A MATERIAL FROM A FLUID MIXTURE CONTAINING IT

L'invention concerne un procédé pour séparer une matière d'un mélange fluide la contenant Suivant ce procédé on met ce mélange en contact avec une membrane semi-perméable solide insoluble dans l'eau se trouvant au contact d'un obstacle aqueux liquide contenant des ions métalliques formant un complexe avec le constituant à séparer. Ce procédé peut être appliqué pour isoler, dans l'industrie gazière, l'éthylène de mélanges gazeux. The invention relates to a method for separating a material from a fluid mixture containing it. According to this method, this mixture is brought into contact with a solid semi-permeable membrane insoluble in water which is in contact with a liquid aqueous obstacle containing metal ions forming a complex with the component to be separated. This process can be applied to isolate ethylene from gas mixtures in the gas industry.

Verfahren zur abtrennung aliphatisch- -ungesaettigter kohlenwasserstoffe mit 2 bis 8 kohlenstoffatomen

Process for separating carbon monoxide

There is described the separation of carbon monoxide from gaseous mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is in contact with a semi-permeable film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, cuprous or other metal ions, and mixtures of these metal ions, with or without other cations, may be used. The separation of carbon monoxide from lower alkanes, e.g., ethane and methane, or hydrogen is of particular interest.

Process for separating one or more components of a gaseous mixture

Novel separation film membranes are made with cross-linked hydrophilic polyvinyl alcohol and nylon, and the films contain complex-forming metal components which are active in the presence of water. The polyvinyl alcohol is cross-linked by reaction with a polycarboxylic acid. The invention includes the membranes, their method of manufacture, and the method of using them to separate one or more components of a gaseous mixture.

Methods for manufacturing olefins from lower alkans by oxidative dehydrogenation

The present invention provides methods for manufacturing olefins such as ethylene and propylene from lower alkanes, that is, methane, ethane and/or propane, by oxidative dehydrogenation at elevated pressure. The olefins are selectively recovered from unconverted lower alkane feed and reaction byproducts by using a complexation separation, such as an absorption separation that uses aqueous silver nitrate as the complexation agent. Catalysts are used that give high selectivity for oxidative dehydrogenation of lower alkanes to olefins at elevated pressure, such as a nonstoichiometric rare earth oxycarbonate catalyst.

Methods for manufacturing olefins from lower alkanes by oxidative dehydrogenation

The present invention provides methods for manufacturing olefins such as ethylene and propylene from lower alkanes, that is, methane, ethane and/or propane, by oxidative dehydrogenation at elevated pressure. The olefins are selectively recovered from unconverted lower alkane feed and reaction byproducts by using a complexation separation, such as an absorption separation that uses aqueous silver nitrate as the complexation agent. Catalysts are used that give high selectivity for oxidative dehydrogenation of lower alkanes to olefins at elevated pressure, such as a nonstoichiometric rare earth oxycarbonate catalyst.

Percolation process for the recovery of naphthalene using silica gel impregnated with picric acid

Recovery of olefin hydrocarbons

Advanced oxidative coupling of methane

The present disclosure provides a method for generating higher hydrocarbon(s) from a stream comprising compounds with two or more carbon atoms (C 2+ ), comprising introducing methane and an oxidant (e.g., O 2 ) into an oxidative coupling of methane (OCM) reactor that has been retrofitted into a system comprising an ethylene-to-liquids (ETL) reactor. The OCM reactor reacts the methane with the oxidant to generate a first product stream comprising the C 2+ compounds. The first product stream can then be directed to a pressure swing adsorption (PSA) unit that recovers at least a portion of the C 2+ compounds from the first product stream to yield a second product stream comprising the at least the portion of the C 2+ compounds. The second product stream can then be directed to the ETL reactor. The higher hydrocarbon(s) can then be generated from the at least the portion of the C 2+ compounds in the ETL reactor.

一种微通道反应器内分离乙烷乙烯混合气的方法

本发明提供了一种在微通道反应器内吸收分离乙烷乙烯混合气的方法。以AgNO 3 或AgBF 4 水溶液和乙烷乙烯的混合气为起始反应物料，混合气由钢瓶经气体质量流量计输入到微反应器中，并在通道接口处与由注射泵输入的AgNO 3 或AgBF 4 水溶液混合，在反应通道内完成混合及吸收过程。反应混合气中乙烯的含量为：20‑95vol％，且气体空速为1～20s ‑1 ；AgNO 3 或AgBF 4 水溶液中的银离子浓度为0.1～2mol/L，液体空速为0.3～3s ‑1 。本发明可在毫秒反应时间内完成吸收，是一种可实现快速放大的微反应技术，为乙烯、丙烯等低碳烯烃与相应烷烃的分离提供一种低能耗的吸收分离技术。

Process for preparing olefins from lower alkanes by oxidative dehydrogenation

본 발명은 저급 알칸, 즉, 메탄, 에탄 및/또는 프로판으로부터 승압에서 산화성 탈수소화에 의해 에틸렌 및 프로필렌과 같은 올레핀을 제조하는 방법을 제공한다. 당해 올레핀은 비전환 저급 알칸 공급물 및 반응 부산물로부터 착화 분리법, 예를 들어 착화제로서 수성 질산은을 사용하는 흡수 분리법에 의해 선택적으로 회수된다. 승압에서 저급 알칸의 올레핀으로의 산화성 탈수소화 반응에 대한 선택도가 높은, 비화학량론적 희토류 옥시카보네이트 촉매와 같은 촉매가 사용된다. The present invention provides a process for producing olefins such as ethylene and propylene by oxidative dehydrogenation at elevated pressure from lower alkanes, ie methane, ethane and / or propane. The olefins are selectively recovered from the unconverted lower alkane feed and reaction by-products by complex separation methods such as absorption separation methods using aqueous silver nitrate as the complexing agent. Catalysts such as nonstoichiometric rare earth oxycarbonate catalysts with high selectivity for oxidative dehydrogenation of lower alkanes to olefins at elevated pressure are used.

从链烷烃分离轻烯烃的方法

分离任意地还含有氢的混合物中所含的轻烯烃和链烷烃的方法，该方法包括将所述混合物与含有一种或多种银化合物，优选硝酸银，和一种或多种正铁化合物，优选硝酸铁的水溶液接触。

Olefin purification by adsorption of acetylenics and regeneration of adsorbent

탄소수 2 내지 8의 올레핀, 탄소 함량이 동일하거나 유사한 아세틸렌계 불순물 및 임의로 포화 탄화수소 가스를 포함하는 스트림을 하나 이상의 금속 원소가 분산되어 있는 표면적이 큰 지지재를 주로 포함하는 흡착제의 미립자 층을 통하여 통과시키는, 적절한 탄화수소 공급 원액의 열분해에 의해 통상적으로 생성되는 올레핀을 정제하기 위해 불균질한 흡착제를 사용하는 공정이 기재되어 있다. 함유되어 있는 아세틸렌계 불순물을, 흡착제의 미립자 층 속에서, 필수적으로 이수소를 함유하지 않는 대기하에, 흡착제로 선택적 및 가역적으로 흡착시키고/시키거나 착화시켜 흡착시키고, 이로써 아세틸렌계 불순물을 소정 수준 미만으로 함유하는 정제된 유출물을 수득한다. 함유되어 있는 아세틸렌계 불순물을 흡착제로 선택적 및 가역적으로 흡착시키고/시키거나 착화시키는 것은, 유출물 스트림 속에서의 아세틸렌계 불순물의 수준의 감소가 소정의 수준으로 증대될 때까지 계속된다. 이어서, 아세틸렌계 불순물이 함유된 흡착제 층을 이수소 함유 환원 가스의 존재하에 재생하여, 함유되어 있는 아세틸렌계 불순물을 흡착제로부터 배출시킨다. Passing a stream comprising olefins of 2 to 8 carbon atoms, acetylene based impurities having the same or similar carbon content and optionally saturated hydrocarbon gas, through the particulate layer of the adsorbent, which mainly comprises a large surface area support in which one or more metal elements are dispersed A process using a heterogeneous adsorbent is described to purify olefins that are typically produced by pyrolysis of a suitable hydrocarbon feed stock. The contained acetylene impurities are adsorbed selectively and reversibly and / or complexed with an adsorbent in the particulate layer of the adsorbent, essentially in the absence of dihydrogen, thereby adsorbing the acetylene impurities below a predetermined level. To obtain a purified effluent containing. Selective and reversible adsorption and / or complexation of the contained acetylene impurities with the adsorbent continues until the reduction in the level of acetylene impurities in the effluent stream increases to a predetermined level. Subsequently, the adsorbent layer containing the acetylene impurities is regenerated in the presence of dihydrogen-containing reducing gas to discharge the contained acetylene impurities from the adsorbent.

Environmentally safe alkylation of aliphatic and aromatic hydrocarbons with olefins using solid HF-equivalent catalysts

Solid polymeric onium poly(hydrogen fluoride) complexes disclosed herein can be used for alkylating aliphatic or aromatic hydrocarbons with olefins. These solid polymeric complexes can be formed by a process of contacting a source of hydrogen fluoride with a homopolymer or copolymer containing in at least one repeat unit, a nitrogen, phosphorus, or sulfur atom, capable of forming an onium fluoride moiety upon reaction or complexation with the hydrogen fluoride source.

Environmentally safe alkylation of aliphatic and aromatic hydrocarbons with olefins using solid HF-equivalent catalysts

A method of alkylating aliphatic or aromatic hydrocarbons with olefins using solid hydrogen fluoride-equivalent catalysts is described. Preferred catalysts comprise solid polymeric onium polyhydrogen fluoride complexes.

Application of alpha-aminoethers for removal of hydrogen sulphide from hydrocarbons

FIELD: chemistry. SUBSTANCE: invention relates to processing sour gas and liquid hydrocarbon with removal or reduction of sulphur concentration in them. Invention deals with method, including contact of flowing medium with effective amount of composition, which includes hydrogen sulphide scavenger, where quantity of hydrogen sulphide scavenger is sufficient for interaction with hydrogen sulphide, in order to reduce its quantity in vapour phase; product of reaction between hydrogen sulphide scavenger and hydrogen sulphide remains in dissolved state in hydrocarbon flowing medium and hydrogen sulphide scavenger contains:10-25% N,N'-oxybis(methylene)bis(N,N-dibutylamine), 50-80% N,N'-(methylenebis (oxy)bis(methylene))bis(N,N-dibutylamine and 10-25% N,N,N',N'-tetrabutylmethanediamine. EFFECT: application of dissoluble in crude oil scavenger instead of water-soluble scavengers. 3 cl, 1 dwg, 3 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C10G 29/20 (13) 2 563 633 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013102414/04, 13.07.2011 (24) Дата начала отсчета срока действия патента: 13.07.2011 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): КОМПТОН Денис Р. (US), СТРИКЛЭНД Байрон Дж. (US), ГАРСИЯ Хуан М. Третий (US) 14.07.2010 US 12/836,037 (43) Дата публикации заявки: 20.08.2014 Бюл. № 23 R U (73) Патентообладатель(и): Налко Компани (US) (45) Опубликовано: 20.09.2015 Бюл. № 26 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.02.2013 (86) Заявка PCT: 2 5 6 3 6 3 3 (56) Список документов, цитированных в отчете о поиске: EP 0882778 A2, 09.12.1998. US 4556546 A, 03.12.1985 . US 4405582 A, 20.09.1983. GB 2290542 A, 20.06.1995. RU 2349627 C2, 20.03.2009 (87) Публикация заявки PCT: WO 2012/009396 (19.01.2012) R U 2 5 6 3 6 3 3 Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) ИСПОЛЬЗОВАНИЕ ПРОСТЫХ АЛЬФА-АМИНОЭФИРОВ ДЛЯ УДАЛЕНИЯ ...

Hydrocarbon separations

A process for the separation and recovery of unsaturated aliphatic hydrocarbons from admixture with saturated aliphatic hydrocarbons which comprises contacting such a mixture with a complexing agent comprising cuprous salts of sulfonic acids and dialkyl phosphates under such conditions that the unsaturated hydrocarbons are preferentially complexed with the cuprous salts. In one embodiment, olefins are separated from paraffins by using a cuprous sulfonate dissolved in an aromatic solvent to form a complex with the olefin. The olefin can be separated from the resulting complex and the cuprous salt recycled for reuse.

Method for preparing olefin complexing reagents and use thereof

Olefin complexing reagents comprising Cu(I) carboxylate/BF, adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.

Method for preparing olefin complexing reagents and use thereof

Olefin complexing reagents comprising Cu(I) carboxylate/BF 3 adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.

Copper (I) carboxylate-containing olefin complexing reagents

Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.

Process

Copper (I) carboxylate-containing olefin complexing reagents

Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.

Separations with ionic liquid solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

Separations with ionic liquid solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

Separations with ionic liquid solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

A process for the recovery of ethylene and propylene from a gaseous mixture

Ethylene and propylene are recovered from a mixture thereof with other hydrocarbons by: (a) feeding the mixture to a separation zone with a top and a bottom; (b) feeding to the top above the mixture an aqueous complexing solution to form Cu(I) complexes of ethylene and propylene; (c) feeding below the mixture ethylene to strip propylene from the propylene complex; (d) removing from the bottom below the stripping gas a first liquid stream containing the Cu(I) ethylene complex; (e) recovering ethylene from the Cu(I) complex using reduced pressure and/or elevated temperature; (f) removing from the separation zone between the gaseous mixture and the complexing solution, a second liquid stream comprising Cu(I) propylene complex; (g) recovering propylene from the Cu(I) complex and producing a liquid recycle stream comprising copper (I) salt; and (h) recycling the liquid recycle stream from step (g) to the separation zone.

Process for removing olefins from fluids

Olefin purification by adsorption of acethylenics and regeneration of adsorbent

본 발명은 하나 이상의 금속성 원소가 분산되어 있고 표면적이 큰 지지체 물질을 주로 포함하는 흡착제의 미립자층을 통해 아세틸렌계 불순물 및 임의의 포화 탄화수소 기체를 함유하는 공급 스트림을 통과시킴으로써, 전형적으로 적합한 탄화수소 공급 원료의 열 크래킹에 의해 생성되는 비교적 불순한 불포화 탄화수소(예: 올레핀)를 불균질 흡착제를 사용하여 정제하는 방법에 관한 것이다. 흡착은 흡착제 층 내에서 본질적으로 디하이드로겐이 없는 대기 중에서 선택적이고 가역성인 흡착을 수행하고/하거나 함유된 아세틸렌 오염물을 흡착제와 착화시켜, 아세틸렌계 불순물을 소정량 미만으로 함유하는 정제된 유출물을 수득한다. 선택적이고 가역성인 흡착 및/또는 함유된 아세틸렌 오염물의 흡착제와의 착화는 유출물 스트림 중의 아세틸렌계 불순물의 양이 소정량으로 증가될 때가지 계속한다. 이후에, 생성된 흡착제 층은 디하이드로겐을 함유하는 환원 기체의 존재하에 재생되어 흡착제로부터 함유된 아세틸렌계 불순물을 방출시킨다. The present invention is typically a suitable hydrocarbon feedstock by passing a feed stream containing acetylene-based impurities and any saturated hydrocarbon gas through a particulate layer of an adsorbent in which at least one metallic element is dispersed and mainly comprising a support material having a large surface area. A method for purifying relatively impure unsaturated hydrocarbons (e.g. olefins) produced by thermal cracking of a catalyst using a heterogeneous adsorbent. Adsorption performs selective and reversible adsorption in an essentially dehydrogen-free atmosphere in the adsorbent bed and / or complexes the contained acetylene contaminants with the adsorbent to remove purified effluents containing less than a predetermined amount of acetylene-based impurities. To obtain. Selective and reversible adsorption and / or complexation of the contained acetylene contaminants with the adsorbent continues until the amount of acetylene based impurities in the effluent stream is increased to a predetermined amount. The resulting adsorbent layer is then regenerated in the presence of a reducing gas containing dihydrogen to release acetylene based impurities contained from the adsorbent. 아세틸렌계 불순물, 올레핀 정제, 흡착제, 환원 기체 Acetylene impurities, olefin purification, adsorbent, reducing gas

Separations with ionic liquid solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

Recovery of Ethylene and Propylene

에틸렌 및 프로필렌은 이들과 다른 탄화수소와의 혼합물로부터 하기의 방법에 의하여 회수된다 : (a) 상부 및 하부를 갖춘 분리 영역에 혼합물을 공급하고; (b) 상기 혼합물 위의 상부에 착물화 수용액을 공급하여, 에틸렌 및 프로필렌의 Cu(I) 착물을 형성하고; (c) 혼합물 아래로 에틸렌을 공급하여, 프로필렌 착물로부터 프로필렌을 스트리핑하고; (d) 스트리핑 기체 아래의 하부로부터 Cu(I)에틸렌 착물을 함유하는 1차 액체 흐름을 제거하고; (e) 감압 및 /또는 고온을 사용하여 Cu(I) 착물로부터 에틸렌을 회수하고; (f) 기상 혼합물 및 착물화 용액 사이의 분리 영역으로부터 Cu(I)프로필렌 착물을 함유하는 2차 액체 흐름을 제거하고; (g) Cu(I) 착물로부터 프로필렌을 회수하고, Cu(I)염을 함유하는 액체 재순환 흐름을 형성하고; 및 (h) 단계 (g) 의 액체 재순환 흐름을 분리 영역으로 재순환시킨다. Ethylene and propylene are recovered from the mixture of these and other hydrocarbons by the following method: (a) feeding the mixture to a separation zone having a top and a bottom; (b) feeding an aqueous complexing solution to the top above the mixture to form a Cu (I) complex of ethylene and propylene; (c) feeding ethylene down the mixture to strip propylene from the propylene complex; (d) removing the primary liquid stream containing the Cu (I) ethylene complex from the bottom below the stripping gas; (e) recovering ethylene from the Cu (I) complex using reduced pressure and / or high temperature; (f) removing the secondary liquid stream containing the Cu (I) propylene complex from the separation zone between the gaseous mixture and the complexing solution; (g) recovering propylene from the Cu (I) complex and forming a liquid recycle stream containing the Cu (I) salt; And (h) recycle the liquid recycle stream of step (g) to the separation zone.

Method of separating light olefins from paraffins (options)

FIELD: petrochemical processes. SUBSTANCE: for that aim, paraffin mixtures possible containing hydrogen are brought into contact with aqueous solution of one or more silver salts, preferably silver nitrate, and one or more ferric salts, preferably ferric nitrate. EFFECT: increased economical efficiency of process due to stability of solutions utilized. 11 cl, 4 dwg, 3 ex ГУДС сСсС ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ "” 2 232 741 ' МК С 07С 7/152 13) С2 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2000119404/04, 21.07.2000 (24) Дата начала действия патента: 21.07.2000 (30) Приоритет: 22.07.1999 11 М!99АО01613 (43) Дата публикации заявки: 10.06.2002 (46) Дата публикации: 20.07.2004 (56) Ссылки: Ц$ 5859304 А, 12.01.1999. 4$ 3189658 А, 15.06.1965. Ц$ 3758605 А, 11.09.1973. ЕР 0705811 АЛ, 10.04.1996. КЦ 2005710 СЛ, 15.01.1994. 4$ 48321718 А, 23.05.1989. (98) Адрес для переписки: 193036, Санкт-Петербург, а/я 24, НЕВИНПАТ, А.В.Поликарпову (72) Изобретатель: ПИРОВАНО Кармен (1Т), САНФИЛИППО Доменико (1Т), САВЬЯНО Франческо (1Т), ПЬЪОВЕЗАН Лаура (1Т) (73) Патентообладатель: Снампроджетти С.п.А. (1Т) (74) Патентный поверенный: Поликарпов Александр Викторович (54) СПОСОБ ОТДЕЛЕНИЯ ЛЕГКИХ ОЛЕФИНОВ ОТ ПАРАФИНОВ (ВАРИАНТЫ) (57) Использование: нефтехимия. Сущность изобретения: парафины, содержащиеся в смесях, возможно также содержащие водород, приводят в контакт с водным раствором одной или более солей серебра, предпочтительно нитрата серебра, и одной или более солей трехвалентного железа, предпочтительно нитрата трехвалентного железа. Технический результат: повышение экономичности процесса за счет увеличения стабильности используемых растворов. 3 н. и РТ Фиг. 1 2232741 С2 КО ГУДС сСсС ПЧ сэ КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) ВИ” 2 232 741‘ 13) С2 ЭПО © 07С 7/152 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 2000119404/04, 21.07.2000 (24) ЕНесНуе дае Гог ргорейу па: 21.07.2000 (30) Рпогйу: 22.07.1999 11 М! ...

Application of alpha-aminoethers for removal of mercaptans from hydrocarbons

FIELD: chemistry. SUBSTANCE: invention relates to method of removal of mercaptan from hydrocarbon flowing media. Invention deals with method of reducing quantity of mercaptans in hydrocarbon flowing medium including contact of flowing medium with effective amount of composition, which includes two types of alpha-aminoethers, sufficient for conversion of mercaptan into non-volatile compounds, and facilitation of removal of volatile compounds from hydrocarbon flowing medium, with reduction in such way of amount of mercaptans, released in vapour phase, with said composition containing 10-25% of monoether, 50-80% of bisether with one carbon atom between ether oxygen atoms, as well as 10-25% of diamine. EFFECT: reduction of mercaptan amount with formation of non-volatile sulphur-containing compound. 6 cl, 1 dwg, 10 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C10G 29/20 (13) 2 557 545 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013102416/04, 13.07.2011 (24) Дата начала отсчета срока действия патента: 13.07.2011 (72) Автор(ы): КОМПТОН Денис Р. (US) (73) Патентообладатель(и): Налко Компани (US) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.08.2014 Бюл. № 23 R U 14.07.2010 US 12/835,881 (45) Опубликовано: 27.07.2015 Бюл. № 21 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.02.2013 (86) Заявка PCT: 2 5 5 7 5 4 5 (56) Список документов, цитированных в отчете о поиске: EP 0882778 A2, 09.12.1998. US 4556546 A, 03.12.1985 . US 4405582 A, 20.09.1983. GB 2290542 A, 20.06.1995. RU 2349627 C2, 20.03.2009 (87) Публикация заявки PCT: WO 2012/009390 (19.01.2012) R U 2 5 5 7 5 4 5 Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) ИСПОЛЬЗОВАНИЕ ПРОСТЫХ АЛЬФА-АМИНОЭФИРОВ ДЛЯ УДАЛЕНИЯ МЕРКАПТАНОВ ИЗ УГЛЕВОДОРОДОВ (57) Реферат: Изобретение относится к способу удаления текучей среды, уменьшая таким образом меркаптанов из углеводородных ...

Nitrogen-based hydrogen sulfide scavenger and method of use thereof

본 발명은 황 함유 화합물 및 메르캅탄을 포함하는 황화수소를 스캐빈징하기 위한, 특히 탄화수소에서 황화수소를 스캐빈징하기 위한, 황화수소 스캐빈징 첨가제 조성물에 관한 것이며, 상기 첨가제 조성물은 실질적으로 감소된 양의 질소 기반 황화수소 스캐빈저를 포함하고, 또한 실질적으로 감소된 양으로 요구되며, 상기 첨가제 조성물은 실온에서뿐만 아니라 더 높은 온도에서도 황 함유 화합물을 스캐빈징하고, 적어도 (A) 적어도 하나의 질소 기반 황화수소 스캐빈저; 및 (B) 적어도 하나의 지방족 3급 아민의 조합을 포함하며, 상기 질소 기반 황화수소 스캐빈저는 트리아진 기반 황화수소 스캐빈저를 포함한다. 일 구현에서, 본 발명은 탄화수소에서 황화수소를 스캐빈징하는 방법에 관한 것이며, 또 다른 구현에서, 탄화수소에서 황화수소를 스캐빈징하기 위해 본 발명의 첨가제 조성물을 사용하는 방법에 관한 것이다. 또 다른 실시예에서, 본 발명은 탄화수소에서 황화수소를 스캐빈징하기 위한 (i) 탄화수소 및 (ii) 황화수소 스캐빈징 첨가제 조성물을 포함하는 조성물에 관한 것이다. The present invention relates to a hydrogen sulfide scavenging additive composition for scavenging hydrogen sulfide comprising a sulfur-containing compound and mercaptan, in particular for scavenging hydrogen sulfide in a hydrocarbon, wherein the additive composition comprises a substantially reduced amount And a nitrogen-based hydrogen sulfide scavenger of, and is also required in a substantially reduced amount, the additive composition scavenging the sulfur-containing compounds at room temperature as well as at higher temperatures, and at least (A) at least one nitrogen-based Hydrogen sulfide scavenger; And (B) a combination of at least one aliphatic tertiary amine, wherein the nitrogen-based hydrogen sulfide scavenger includes a triazine-based hydrogen sulfide scavenger. In one embodiment, the present invention relates to a method of scavenging hydrogen sulfide in a hydrocarbon, and in another embodiment, to a method of using the additive composition of the present invention to scavenging hydrogen sulfide in a hydrocarbon. In another embodiment, the present invention relates to a composition comprising (i) a hydrocarbon and (ii) a hydrogen sulfide scavenging additive composition for scavenging hydrogen sulfide in a hydrocarbon.

Process for separating light olefine from alkane

分离任意地还含有氢的混合物中所含的轻烯烃和链烷烃的方法,该方法包括将所述混合物与含有一种或多种银化合物,优选硝酸银,和一种或多种正铁化合物,优选硝酸铁的水溶液接触。

Alkenyl carboxylate or alkyl carboxylate production process

FIELD: industrial organic synthesis. SUBSTANCE: invention relates to a process for production of C 2 -C 4 -alkane into alkene and carboxylic acid and immediately using them in ester synthesis stage. According to invention, to produce alkyl carboxylate, in particular ethyl acetate, or alkenyl carboxylate, in particular vinyl acetate, stage wherein alkane is oxidized to corresponding alkene and carboxylic acid is combined with alkenyl carboxylate or alkyl carboxylate production stage. Process comprises contacting of alkane- and alkene-containing gas raw material with molecular oxygen and catalyst in the first oxidation reaction zone, catalyst being efficient in oxidation of alkane into corresponding alkene and carboxylic acid. In the second reaction zone, part of streams isolated in separation stage and enriched with alkene and carboxylic acid is brought into contact with at least one catalyst efficient to produce either alkyl carboxylate or alkenyl carboxylate in presence of oxygen-containing gas. For example, first product stream consists of ethylene and acetic acid with water admixture. In the second reaction zone, stream enriched with alkene and carboxylic acid comes into contact with oxygen, optionally in presence of additional amount of ethylene and/or acetic acid from the first product stream. As a result, second product stream comprising vinyl acetate, water, acetic acid, and optionally small amounts of carbon oxides is obtained. Second product stream is separated into fractions containing vinyl acetate and acetic acid, which are subjected to further purification. In a cycle wherein acetic acid from main fraction is regenerated, the latter is recycled to vinyl acetate stage in the second reaction zone. EFFECT: improved economical efficiency of process. 36 cl, 1 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 315 033 (13) C2 (51) ÌÏÊ C07C C07C C07C C07C 67/05 69/14 69/15 51/215 (2006.01) (2006.01) (2006.01) (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ...

The separation carried out using ion liquid solvent

本发明公开了如下的系统和方法，所述系统和方法提供包含气体组分的工艺物流，通过分离器的离子液体溶剂从所述工艺物流中捕集所述气体组分，并且在再生器中从所述离子液体溶剂中回收所捕集的气体组分。可以通过所述分离器的离子液体溶剂从所述工艺物流中捕集第二气体组分，并且可以在所述再生器中从所述离子液体溶剂中回收所述第二气体组分。或者，所述工艺物流中的所述第二气体组分可以未被所述离子液体溶剂所捕集，并且可以由膜单元回收所述未捕集的第二气体组分。

METHOD FOR REMOVING ORGANIC AMINES FROM HYDROCARBON FLOWS

1. Способ удаления органического амина из жидкого углеводородного потока, содержащего амин, включающий стадии, на которых:a) добавляют воду к углеводородному потоку, содержащему амин,b) барботируют диоксид углерода через углеводородный поток, содержащий амин, иc) отделяют образовавшуюся твердую фазу, содержащую амин от жидкой фазы.2. Способ по п. 1, в котором углеводородный поток, содержащий амин, представляет собой выходящий поток из реактора для получения линейных альфа-олефинов (LAO) или фракцию такого выходящего потока.3. Способ по п. 1 или 2, в котором органический амин представляет собой амин, который является жидкостью при комнатной температуре и нормальном давлении.4. Способ по п. 1 или 2, в котором органический амин имеет температуру кипения выше 100°C, предпочтительно 2-этилгексиламин и/или н-додециламин.5. Способ по п. 1 или 2, в котором воду добавляют в количестве 5-70% масс. по отношению к общему количеству углеводородного потока, предпочтительно 15-60%, более предпочтительно 25-50%.6. Способ по п. 1 или 2, в котором барботирование проводят в течение 5-60 мин, предпочтительно 10-50 мин, более предпочтительно 20-40 мин.7. Способ по п. 1 или 2, в котором объемная скорость диоксида углерода находится в интервале от 50 до 150 см/мин, в зависимости от общего количества смеси жидких углеводородов, находящихся в реакторе.8. Способ по п. 1 или 2, в котором добавляемую воду по меньшей мере один раз заменяют, по меньшей мере частично, свежей водой, во время барботирования диоксида углерода через углеводородный поток.9. Способ по п. 1 или 2, в котором отделение проводят фильтрацией.10. Способ по п. 1 или 2, который проводят в температурном интервале 30-80°C, предпо РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2014 118 600 A (51) МПК C07C 7/152 (2006.01) C07C 11/02 (2006.01) C07C 211/03 (2006.01) C07C 209/82 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014118600/04, 02.10.2012 (71) Заявитель(и): САУДИ БЕЙСИК ...

Method for separating 2,6-dimethyl naphthalene from hydrocarbon mixtures

METHOD FOR PRODUCING ALKENYL CARBOXYLATE OR ALKYL CARBOXYLATE

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 129 597 (13) A C 07 C 67/04 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004129597/04, 12.02.2003 (71) Çà âèòåëü(è): ÁÏ ÊÅÌÈÊÝËÇ ËÈÌÈÒÅÄ (GB) (30) Ïðèîðèòåò: 04.03.2002 GB 0205014.4 (43) Äàòà ïóáëèêàöèè çà âêè: 10.07.2005 Áþë. ¹ 19 (86) Çà âêà PCT: GB 03/00619 (12.02.2003) (74) Ïàòåíòíûé ïîâåðåííûé: Âåñåëèöêà Èðèíà Àëåêñàíäðîâíà Àäðåñ äë ïåðåïèñêè: 101000, Ìîñêâà, Ì.Çëàòîóñòèíñêèé ïåð., ä.10, êâ.15, "ÅÂÐÎÌÀÐÊÏÀÒ", È.À.Âåñåëèöêîé R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá ïîëó÷åíè àëêèëêàðáîêñèëàòà, êîòîðûé âêëþ÷àåò ñëåäóþùèå ñòàäèè: (à) êîíòàêòèðîâàíèå â îêèñëèòåëüíîé ðåàêöèîííîé çîíå àëêàíà ñ Ñ2 ïî Ñ4, ñîäåðæàùåãî ìîëåêóë ðíûé êèñëîðîä ãàçà, ñîîòâåòñòâóþùåãî àëêåíà è íåîá çàòåëüíî âîäû â ïðèñóòñòâèè ïî ìåíüøåé ìåðå îäíîãî êàòàëèçàòîðà, ýôôåêòèâíîãî ïðè îêèñëåíèè àëêàíà äî ñîîòâåòñòâóþùèõ àëêåíà è êàðáîíîâîé êèñëîòû, ñ ïîëó÷åíèåì ïåðâîãî ïîòîêà ïðîäóêòîâ, âêëþ÷àþùåãî àëêåí, íåïðîðåàãèðîâàâøèé àëêàí, êàðáîíîâóþ êèñëîòó è âîäó; (á) ðàçäåëåíèå â ïåðâîì ðàçäåëèòåëüíîì ñðåäñòâå ïî ìåíüøåé ìåðå ÷àñòè ïîòîêà ïðîäóêòîâ, ïîëó÷àåìîãî â îêèñëèòåëüíîé ðåàêöèîííîé çîíå, íà ãàçîîáðàçíûé ïîòîê, âêëþ÷àþùèé àëêåí è íåïðîðåàãèðîâàâøèé àëêàí, è æèäêèé ïîòîê, âêëþ÷àþùèé êàðáîíîâóþ êèñëîòó è âîäó; (â) ðàçäåëåíèå âî âòîðîì ðàçäåëèòåëüíîì ñðåäñòâå ïî ìåíüøåé ìåðå ÷àñòè ãàçîîáðàçíîãî ïîòîêà, ïîëó÷àåìîãî èç ïåðâîãî ðàçäåëèòåëüíîãî ñðåäñòâà, íà ñîîòâåòñòâóþùèå ïîòîêè, áîãàòûå àëêåíîì è àëêàíîì; (ã) êîíòàêòèðîâàíèå âî âòîðîé ðåàêöèîííîé çîíå ïî ìåíüøåé ìåðå ÷àñòè óïîì íóòîãî áîãàòîãî àëêåíîì ïîòîêà, ïîëó÷àåìîãî èç âòîðîãî ðàçäåëèòåëüíîãî ñðåäñòâà, è ñîîòâåòñòâóþùåé êàðáîíîâîé êèñëîòû â ïðèñóòñòâèè ïî ìåíüøåé ìåðå îäíîãî êàòàëèçàòîðà, ýôôåêòèâíîãî ïðè ïîëó÷åíèè àëêèëêàðáîêñèëàòà, ñ ïîëó÷åíèåì âòîðîãî ïîòîêà ïðîäóêòîâ, âêëþ÷àþùåãî àëêèëêàðáîêñèëàò. 2. Ñïîñîá ïîëó÷åíè àëêåíèëêàðáîêñèëàòà, êîòîðûé âêëþ÷àåò ñëåäóþùèå ñòàäèè: (à) êîíòàêòèðîâàíèå â îêèñëèòåëüíîé ðåàêöèîííîé ...

Method for manufacturing conjugated diolefin and manufacturing device therefor

본 발명은, 고비점의 반응 부생성물이 급냉탑에 의한 급냉 공정의 후공정에 잔존하는 것을 억제 가능한 공역 디올레핀의 제조 방법과, 공업 그레이드의 반드시 고순도는 아닌 혼합 탄화수소를 원료로 하여 공역 디올레핀(예컨대, 부타디엔)을 제조하는 경우에도, 합성 고무나 수지 등의 원료로서 이용 가능한 공역 디올레핀(예컨대, 1,3-부타디엔)의 제조 방법을 제공하는 것을 목적으로 한다. 본 발명의 공역 디올레핀의 제조 방법은, 금속 산화물 및 담체를 포함하는 촉매를 수용한 반응기에, 탄소수 4 이상의 모노올레핀을 포함하는 탄화수소와 산소를 공급하여 공역 디올레핀을 포함하는 반응 생성 가스를 생성시키는 공정과, 상기 반응 생성 가스를 급냉탑에 송입하고, 급냉제에 의해 세정하는 공정을 포함하고, 상기 급냉제로서 유기 아민 수용액을 이용한다. The present invention relates to a method for producing a conjugated diolefin capable of inhibiting a reaction by-product having a high boiling point from remaining in a post-step of a quenching step by a quenching tower and a method for producing a conjugated diolefin using a mixed hydrocarbon which is not necessarily high- (For example, 1,3-butadiene) which can be used as a raw material for a synthetic rubber, a resin and the like even in the case of producing a conjugated diene (e.g., butadiene). The method for producing a conjugated diolefin of the present invention comprises the steps of supplying a hydrocarbon containing oxygen and a monoolefin having 4 or more carbon atoms and oxygen to a reactor containing a catalyst containing a metal oxide and a carrier to produce a reaction product gas containing a conjugated diolefin And feeding the reaction product gas into a quenching tower and washing the reaction product gas with a quencher, wherein an organic amine aqueous solution is used as the quencher.

Removal of Olefin from the Mixture

본 발명은 하나 이상의 올레핀을 함유하는 유동체로부터 을레핀을 분리하기위한 방법 및 장치를 제공한다. 분리는 유동체를 특정 구리(I) 착화합물을 함유하는 흡수용액과 접촉시켜 수행된다. 본 발명은 또한 구리(II) 유도체 및 금속 구리로부터 불안정한 구리(I) 착화합물의 그 자체 형성을 위한 방법 및 장치를 포함한다. The present invention provides a method and apparatus for separating olefins from a fluid containing one or more olefins. Separation is performed by contacting the fluid with an absorbent solution containing a specific copper (I) complex. The present invention also includes methods and apparatus for the self-formation of unstable copper (I) complexes from copper (II) derivatives and metallic copper.

The separation method of alkene

一种把C 2 -C 4 烷氧化以产生相应的烯和羧酸的方法，该方法包括利用在一种金属盐溶液中吸收，从烯，烷和氧的混合物中分离出所说的烯，并从该金属盐溶液中回收富烯物流。本发明还涉及用于生产烷基羧酸酯和烯基羧酸酯的联合方法，该方法包括氧化C 2 -C 4 烷以产生相应的烯和羧酸。从烯，烷和氧的混合物中，利用在金属盐溶液中吸收，分离出所说的烯，从金属盐溶液中回收富烯的物流，用于生产烷基羧酸酯或烯基羧酸酯。

Process for removing metals from hydrocarbons

Method for preparing oligomer

본 발명은 올리고머의 제조방법에 관한 것으로, 단량체 스트림 및 용매 스트림을 반응기로 공급하여 올리고머화 반응시켜 반응 생성물을 제조하는 단계; 상기 반응 생성물을 포함하는 반응기 배출 스트림을 분리 장치로 공급하고, 분리 장치 하부 배출 스트림은 침전조로 공급하는 단계; 상기 침전조에 유기계 응집제를 투입하여 고분자를 침전시켜 제거하고, 고분자가 제거된 분리 장치 하부 배출 스트림을 고비점 분리탑으로 공급하는 단계; 및 상기 고비점 분리탑에서 하부 배출 스트림으로부터 고비점 물질을 제거하고, 올리고머를 포함하는 상부 배출 스트림은 용매 분리탑으로 공급하는 단계를 포함하는 올리고머 제조방법을 제공한다.

Bent aromatic compound and method for producing same

本发明提供在有机溶剂中显示出翘曲纳米石墨烯优异的溶解性，并且具有相同堆积结构的新型化合物及其制备方法。经发现，由以下通式(1)表示的WNG68化合物在有机溶剂中显示出比翘曲纳米石墨烯优异的溶解性并且具有荧光。式中，R彼此独立地相同或不同，为选自由卤素原子、硝基、氰基、三氟甲基、羟基、硫醇基、氨基、二苯氨基、咔唑基、碳数为1～20的直链状或支链状的烷基、烷基氨基以及烷氧基组成的组中的取代基，n分别彼此独立地为0～3的整数，

METHOD OF ISOLATING DIAMONDOIDES

Ethylbenzene purification from aluminium organyl cpds - by treating with ammonia to form insoluble complex which is separated

Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins

A process for separating linear alpha olefins from their mixture in a feed stream with olefins which are branched at the 2- and/or 3-position, the process comprising: a) contacting the feed stream with one or more linear polyaromatic compounds having 3 or more fused aromatic, optionally substituted, rings under conditions effective to form a linear polyaromatic compound-linear alpha olefin adduct; b) separating the linear polyaromatic compound-linear alpha olefin adduct from the reaction mixture; and c) dissociating the linear polyaromatic compound-linear alpha olefin adduct to form the linear polyaromatic compound and a linear alpha olefin composition, and optionally d) separating the linear polyaromatic compound formed in step c) from said linear alpha olefin composition.

Patent FR2184809B1

Separation of hydrocarbons by type ii hydrate - formation

Non-hydrate forming hydrocarbons are separated by contacting them with water and a halocarbon hydrate-forming agent capable of forming a Type II hydrate below the hydrate promotion temp. of the water and at a minimum pressure equal to the saturation pressure of the system and then separating the hydrate from the remaining liquid. The process is applicable to hydrocarbons which are acyclic and contain 4-6C and particularly to n-butene/isobutene mixtures.

Alkene separation process

A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the alkane and oxygen by absorption in a metallic salt solution, and recovery of an alkene-rich stream from the metallic salt solution. Integrated processes for the production of alkyl carboxylate and alkenyl carboxylate, which processes comprise oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid, separation of the alkene from a mixture of the alkene, the alkane and oxygen by absorption in a metallic salt solution, and recovery of an alkene-rich stream from the metallic salt solution for use in production of alkyl carboxylate or alkenyl carboxylate.

PROCESS FOR REMOVING 1,3-CYCLOPENTADIENE FROM A MIXTURE OF HYDROCARBONS

Patent FR2112632A5

Process for the separation of mixtures of monoolefinic and diolefinic hydrocarbons

Hydrocarbon separation process

Patent FR2198914A1

Xylene isomer sepn from a complex - by heating with hydrocarbon vapour avoiding corrosion problems caused by steam heating

A single xylene isomer is sepd. from a mixt. of 8C-aromatic hydrocarbons by heating a complex cpd. of HF-boron fluoride-aromatic hydrocarbon by passing over hydrocarbon vapour obtd. by distn. of a hydrocarbon mixt. A part of the aromatic hydrocarbon is isomerised to other isomers or the complex cpd. is decomposed into its components. The hydrocarbon vapour is normally obtd. from the 8C-aromatic hydrocarbon mixt.

Separation of straight and branched chain hydrocarbons - as urea or thiourea addn cpds

Petroleum fractions are treated with a soln. of urea or thiourea in liq. NH3 under controlled conditions of temp. and NH3 pressure, to give solid or mainly solid ppts. of the addn. cpds., which are recovered and converted into their components by treatment in liq. NH3 under different temp. and press. conditions.

Method of removing organic amines from hydrocarbon streams

FIELD: chemistry. SUBSTANCE: present invention relates to an improved method of removing organic amine from liquid hydrocarbon stream containing amine, having a boiling point higher than 100 °C, which is liquid at room temperature and normal pressure. Invention can be used in processes, in which a crude stream or product flow contains hydrocarbons and amines. Method includes the following steps: a) adding water to hydrocarbon stream containing an amine in an amount of 5-70 wt% with respect to total amount of hydrocarbon stream, b) bubbling carbon dioxide through hydrocarbon stream containing an amine at temperature 30-80 °C, and c) separating formed solid phase containing amine from liquid phase by filtration and optionally, extraction of amine from solid phase by heating in water or aqueous solution. Preferably hydrocarbon stream, containing an amine, selected from 2-ethylhexylamine and/or n-dodecylamine, is output stream from reactor for producing linear alpha-olefins (LAO) or fraction of said output flow. Water is added in amount of 15-60 %, more preferably 25-50 % in relation to total amount of hydrocarbon stream, bubbling is performed for 5-60 min, preferably 10-50 minutes, more preferably 20-40 minutes. Volume rate of carbon dioxide is in range of 50 to 150 cm 3 /min, depending on total amount of a mixture of liquid hydrocarbons in reactor. Added water is usually at least once partially replaced with fresh water during bubbling of carbon dioxide in temperature range 50-80 °C through hydrocarbon stream. EFFECT: method simplifies process, since it simplifies extraction of amines due to formation of a solid gel-like phase, which is insoluble in organic or aqueous phase; wherein method does not require additional means for extracting and amines easily react. 14 cl, 1 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 594 744 C2 (51) МПК C07C 7/152 (2006.01) C07C 11/02 (2006.01) C07C 211/03 (2006.01) C07C 209/82 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ ...