Abstract: A process for producing paraxylene is provided. The process includes separating a first mixture of C8 aromatic hydrocarbons in a simulated moving bed apparatus using a desorbent to produce (i) an extract comprising ?50.0 wt % of the paraxylene in the first mixture; (ii) a desorbent-rich raffinate comprising ?75 wt % of the desorbent withdrawn, and (iii) an desorbent-lean raffinate comprising ?25 wt % of the desorbent withdrawn in the desorbent-rich and desorbent-lean raffinates. The desorbent-lean raffinate can then, without an intervening separation step, be passed to a refinery process or a vapor phase isomerization reaction to produce an effluent comprising paraxylene in a greater concentration than the desorbent-lean raffinate. The desorbent-rich raffinate can be passed to a liquid phase isomerization reaction to produce an effluent comprising paraxylene in a greater concentration than the desorbent-rich raffinate.

Abstract: A process according to various approaches includes flushing an intermediate transfer line between a raffinate stream transfer line and a desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid including desorbent from intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to a recycle stream to introduce the residual fluid into the adsorptive separation chamber.

Abstract: A process according to various approaches includes flushing an intermediate transfer line between a raffinate stream transfer line and a desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid including desorbent from intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to a recycle stream to introduce the residual fluid into the adsorptive separation chamber.

Abstract: The invention relates to a method for upgrading a gas by separation of carbon dioxide therefrom, which method comprises the steps of introducing a stream of gas to a wet bed of ion exchange resin, and desorbing the adsorbed carbon dioxide from the resin by increasing the temperature and/or lowering the pressure in said wet bed.

Abstract: A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system is described. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. The improvement is a more efficient use of the desorbent. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process.

Abstract: Zeolitic Imidazolate Frameworks (ZIFs) characterized by organic ligands consisting of imidazole ligands that are either essentially all 2-chloroimidazole ligands or essentially all 2-bromoimidazole ligands are disclosed. Methods for separating propane and propene with the ZIFs of the present invention, as well as other ZIFs, are also disclosed.

Abstract: The present invention relates to a method for preparing a MOF shaped body in the form of spheres, MOF shaped bodies in the form of spheres and a method of uptake of at least one substance for the purposes of its storage, separation, controlled release, chemical reaction or as support utilizing MOF shaped bodies in the form of spheres.

Abstract: The present invention provides a method of separating ethylene or ethane from a mixed gas containing ethylene and ethane using hydroquinone. According to the present invention, hydroquinone selectively forms a clathrate with ethylene, and thus it is possible to separate ethylene with high yield and purity through a single process.

Abstract: A molecular sieve material designated as EMM-22 has, in its calcined form, an X-ray diffraction pattern including the following peaks in Table 1: TABLE 1 Relative Intensity d-spacing (?) [100 × I/I(o)] 11.03 ± 0.40 VS ?9.91 ± 0.20 W ?6.70 ± 0.04 VW ?4.39 ± 0.02 W ?4.06 ± 0.04 W ?3.85 ± 0.02 M ?3.37 ± 0.

Abstract: The present invention relates to a process for separating isomers by simulated moving bed (SMB) adsorption, comprising separating the raw materials comprising isomers by SMB adsorption, said SMB comprising many adsorption beds each of which is equipped with grids, each of the grids being equipped with the feedstock inlet and outlet pipeline of the bed, the feedstock charged into and discharged from SMB at least comprising feedstocks, desorbent, extract, and raffinate, the extract being enriched with the target product, characterized in that the extract is used as a flushing liquid and respectively charged to first or second bed at the upstream of the feedstock charging position and to one of second to fourth beds at the downstream of the extract withdrawing position. Such process is used for separation of C8 aromatic isomers by adsorption, and can improve the capacity of the device while effectively increasing the purity of the target product separated by adsorption.

Abstract: The present invention relates to a process for the separation of at least one unbranched C4-C2O hydrocarbon from a fluid mixture containing the unbranched hydrocarbon and at least one branched isomer of the unbranched hydrocarbon, which comprises the step of—contacting the fluid mixture with an adsorbent comprising a porous metal organic framework material, which material comprises at least one at least bidentate organic compound coordinately bound to at least one metal ion, to get the unbranched hydrocarbon adsorbed, wherein the at least one at least bidentate organic compound is a monocyclic, bicyclic or polycyclic ring system which is derived from at least one heterocycle selected from the group consisting of pyrrole, alpha-pyridone and gamma-pyridone and has at least two ring nitrogens and is unsubstituted or bears one or more substituents selected independently from the group consisting of halogen, Ci-6-alkyl, phenyl, NH2, NH(d-6-alkyl), N(C1-6-alkyl)2, OH, Ophenyl and OCi-6-alkyl, where the substituents

Abstract: Compositions and methods are disclosed for remediating environmental contaminants when such contaminants primarily include hydrophobic materials such as petroleum.

Abstract: A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system is described. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. The improvement is a more efficient use of the desorbent. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process.

Abstract: A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system is described. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. The improvement is more efficient use of the desorbent. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process.

Abstract: A process for the industrial isolation of propene from a gas stream comprising at least propene and propane, which involves contacting of the gas stream with an adsorbent having a porous metal organic framework having at least one at least bidentate organic compound coordinated to at least one metal ion, with the adsorbent becoming laden with propane and the gas stream therefore having an increased proportion of propene, wherein the W least bidentate organic compound is an imidazolate which is unsubstituted or has one or more substituents selected independently from of halogen, C1-6-alkyl, phenyl, NH2, NH(C1-6-alkyl), N(C1-6-alkyl)2, OH, O-phenyl and O—C1-6-alkyl.

Abstract: Embodiments of the present invention provide, for an adsorption separation system for separating normal paraffins from a hydrocarbon feed stream, a process for switching the adsorption separation from a triple split desorbent system to a dual split desorbent system, and vice versa. Switching occurs by separating and/or introducing a second flush material in the adsorption separation system. This switching can occur during normal operations.

Abstract: Crosslinked polyolefins for use in recovering or containing hydrocarbons such as hydrocarbons contained in oil, are disclosed. Advantageously, the crosslinked polyolefins absorb the hydrocarbon to form a gel that can be collected and processed by heat to release the collected hydrocarbons.

Abstract: Disclosed herein are rod-packing robust microporous metal-organic frameworks having the repeat unit Zn4(OH)2(1,2,4-BTC)2, useful for applications such as selective gas storage, selective gas sorption and/or separation, selective sensing of chemicals, and catalysis.

Abstract: Zeolitic Imidazolate Frameworks (ZIFs) characterized by organic ligands consisting of imidazole ligands that are either essentially all 2-chloroimidazole ligands or essentially all 2-bromoimidazole ligands are disclosed. Methods for separating propane and propene with the ZIFs of the present invention, as well as other ZIFs, are also disclosed.

Abstract: A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system is described. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. The improvement is more efficient use of the desorbent. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process.

Abstract: A method for treating crude or residual fuel oil includes extracting vanadium from the fuel oil by contacting the fuel oil with an adsorbent and a solvent. The adsorbent may be modified with a compound having both acidic functionality and basic functionality. The method provides effective removal of vanadium from crude or residual fuel oil at moderate temperatures.

Abstract: A process for the industrial isolation of propene from a gas stream comprising at least propene and propane, which involves contacting of the gas stream with an adsorbent having a porous metal organic framework having at least one at least bidentate organic compound coordinated to at least one metal ion, with the adsorbent becoming laden with propane and the gas stream therefore having an increased proportion of propene, wherein the W least bidentate organic compound is an imidazolate which is unsubstituted or has one or more substituents selected independently from of halogen, C1-6-alkyl, phenyl, NH2, NH(C1-6-alkyl), N(C1-6-alkyl)2, OH, O-phenyl and O—C1-6-alkyl.

Abstract: A light olefin feed for an olefin utilization process is subjected to a water wash to remove water-soluble contaminants after which the water is separated from the olefin by coalescence separation at a low temperature, typically below 40° C. The coalescence separation technique is effective for separating the olefins from the water with its dissolved contaminants. If desired, a supplemental washing may be carried out by adding additional water to the feed/water mix after the initial wash step but before the coalescer in order to remove provide additional contaminant removal.

Abstract: An adsorbent for removing impurities such as CO2, H2S and water vapors from a gaseous olefin stream of at least C2 to C4 olefins is disclosed. The adsorbent comprises of zeolite CaA molecular sieve modified with metal silicate.

Abstract: The present invention relates to a process for the separation of at least one unbranched C4-C2O hydrocarbon from a fluid mixture containing the unbranched hydrocarbon and at least one branched isomer of the unbranched hydrocarbon, which comprises the step of—contacting the fluid mixture with an adsorbent comprising a porous metal organic framework material, which material comprises at least one at least bidentate organic compound coordinately bound to at least one metal ion, to get the unbranched hydrocarbon adsorbed, wherein the at least one at least bidentate organic compound is a monocyclic, bicyclic or polycyclic ring system which is derived from at least one heterocycle selected from the group consisting of pyrrole, alpha-pyridone and gamma-pyridone and has at least two ring nitrogens and is unsubstituted or bears one or more substituents selected independently from the group consisting of halogen, Ci-6-alkyl, phenyl, NH2, NH(d-6-alkyl), N(C1-6-alkyl)2, OH, Ophenyl and OCi-6-alkyl, where the substituents

Abstract: A dewatered ethanol residue regenerable and non-regenerable sorbent for the removal of acid gas from hydrocarbon production gas streams and the process for the removal of acid gas from hydrocarbon gas. The process includes the steps of obtaining residue from the distillation of ethanol; de-watering the residue; mixing the de-watered residue with an amine; and, contacting the hydrocarbon gas with the dewatered residue/amine mixture.

Abstract: Pulverulent solid which consists essentially of at least one metal alkyl compound bound chemically and/or physically to a finely divided, porous, mechanically stable and chemically inert support, has a proportion by weight of metal alkyl compound of at least 5% by weight, based on the support, and has an angle of repose, determined in accordance with ISO 4324, of up to 48°. The solid allows trouble-free metering as active component into a reactor.

Abstract: ITQ-26 (INSTITUTO DE TECNOLOGIA QUIMICA number 26) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework. ITQ-26 can be prepared in silicate compositions with an organic structure directing agent. It has a unique X-ray diffraction pattern, which identifies it as a new material. ITQ-26 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.

Abstract: ITQ-34 (INSTITUTO DE TECNOLOGÍA QUÍMICA number 34) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework. ITQ-34 can be prepared in silicate compositions with an organic structure directing agent. It has a unique X-ray diffraction pattern, which identifies it as a new material. ITQ-34 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.

Abstract: A method for separating a mixture of hydrocarbons into fractions enriched in linear, mono-branched, or multi-branched hydrocarbons is disclosed. In particular, mono-branched alkanes are separated from a mixture of alkanes containing multi-branched, mono-branched and linear alkanes, by selectively adsorbing the mono-branched alkanes on a zeolitic adsorbent. The zeolitic adsorbent MCM-22 is particularly suitable for carrying out the method.

Abstract: The present invention is a separation process for producing a methanol, ethanol and/or dimethyl ether stream from a first stream containing C3+ hydrocarbons. The first stream comprises C3+ hydrocarbons, methanol, ethanol and/or dimethyl ether. The process comprises the step of passing the first stream through an adsorbent bed having a crystalline microporous material that preferentially adsorbs methanol, ethanol and/or dimethyl ether over the C3+ hydrocarbons.

Abstract: A process of reducing the sulfur content of gasoline product comprising at least three concurrent steps: a) passing input fluid comprising pollutant through at least one adsorber to produce a polluted adsorber and a purified fluid stream which leaves the adsorber, stopping the flow into said adsorber to leave residual fluid therein, and separating said residual fluid therein said adsorber to leave the polluted adsorber of reduced residual fluid content, b) heating a polluted adsorber with a heated regeneration gas to produce a hot adsorber and cooler regeneration gas, c) contacting a heated adsorber with a regeneration gas (of a lower temperature than that of said adsorber) to produce a cooler adsorber and a warmer regeneration gas, which gas is further heated to produce said heated regeneration gas which is pass to step b), said process comprising at least 3 adsorber, at least one of which being subjected to step a) at least one different adsorber to step b) and at least one further different adsorber being

Abstract: The invention relates to an effective method of separating polycyclic aromatic hydrocarbons by means of a chromatographic separation method. This is achieved by using, according to the invention, calixarene-modified separation phases as stationary phase for chromatography in order to separate polycyclic aromatic hydrocarbons. The calixarene-modified stationary phases are particularly suitable for separating polycyclic aromatic hydrocarbons in liquid chromatography separation methods.

Abstract: Construction and operational costs of recovering the extract or raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to perform the separation. The raffinate or extract stream is passed into the column at an intermediate point on the first side of the dividing wall, with the column delivering the adsorptive separation product as a sidedraw from the opposite side of the dividing wall. A stream of co-adsorbed impurity is removed as an overhead stream and desorbent is recovered as a net bottoms stream.

Abstract: The present invention relates to methods for removing VOCs from an aqueous polymer dispersion (e.g., an SBR latex) in which the dispersion is contacted with a stripping medium in the presence of a particulate adsorbent such as activated carbon. This process results in the rapid and economical removal of VOCs from polymer dispersions.

Abstract: The invention provides a method of purifying hydrocarbon streams from metallic impurities which comprises passing the stream through media comprising alumina with relatively minor amounts of calcia and magnesia.

Abstract: Mercury is removed from a liquid hydrocarbon fraction by effecting high-temperature heat treatment to convert an organic mercury compound into an inorganic mercury compound or elemental mercury, removing a higher molecular weight component from the fraction, removing water from the fraction, and thereafter contacting the fraction with an adsorbent in the form of active carbon having calcium or a calcium compound supported thereon. Although only a minor amount of mercury is contained in the liquid hydrocarbon fraction, mercury can be efficiently removed at low cost on an industrial large scale, achieving an extremely low mercury concentration.

Abstract: An adsorptive process to separate the components of a solution of linear and branched hydrocarbons into a linear hydrocarbon portion and a branched hydrocarbon portion where the adsorbent is an alkylene-bridged polysilsesquioxane has been developed. The hydrocarbon components to be separated may be alkanes, alkenes, or alkynes, and the alkylene-bridging group of the adsorbent may contain from about 2 to about 14 carbon atoms. A specific embodiment of the invention is one where the process is operated in the simulated moving bed mode.

Abstract: A process to separate at least two classes of hydrocarbons of a solution using an alkylene-bridged polysilsesquioxane adsorbent has been developed. The classes of hydrocarbons to be separated may be saturated hydrocarbons, unsaturated aliphatic hydrocarbons and aromatic hydrocarbons. The alkylene-bridging group may contain from about 2 to about 14 carbon atoms. A specific embodiment of the invention is one where the components of a solution of aromatic, unsaturated aliphatic, and saturated hydrocarbons are separated into an aromatic hydrocarbon portion, an unsaturated aliphatic hydrocarbon portion, and a saturated hydrocarbon portion where the adsorbent is an alkylene-bridged polysilsesquioxane.

Abstract: An adsorptive process to separate the components of a solution of linear and branched hydrocarbons into a linear hydrocarbon portion and a branched hydrocarbon portion where the adsorbent is an aryl-bridged polysilsesquioxane has been developed. The hydrocarbon components to be separated may be alkanes, alkenes, or alkynes, and the aryl-bridging group of the adsorbent may be phenylene, diphenylene, terphenylene or anthrylene. A specific embodiment of the invention is one where the process is operated in the simulated moving bed mode.

Abstract: A process to separate at least two classes of hydrocarbons of a solution using an aryl-bridged polysilsesquioxane adsorbent has been developed. The classes of hydrocarbons to be separated may be saturated hydrocarbons, unsaturated aliphatic hydrocarbons and aromatic hydrocarbons. The aryl-bridging group may be phenylene, diphenylene, terphenylene, or anthrylene. A specific embodiment of the invention is one where the components of a solution of aromatic, unsaturated aliphatic, and saturated hydrocarbons are separated into an aromatic hydrocarbon portion, an unsaturated aliphatic hydrocarbon portion, and a saturated hydrocarbon portion where the adsorbent is an aryl-bridged polysilsesquioxane.

Abstract: Process for removing mercury from an organic medium which at least contains mercury and arsenic, wherein the organic medium is contacted with a solid polymeric substrate containing thiol groups bound to the polymeric substrate through aliphatic groups.

Abstract: For the at least partial separation of aliphatic paraffins into at least one effluent comprising the least branched paraffins and at least one effluent comprising the most branched paraffins, use is made of at least one adsorbent bed comprising at least one grafted microporous solid. A preferred use of the invention relates to the treatment of a charge obtained from an isomerization zone, whereby at least one adsorbent bed makes it possible to separate the charge into a first effluent comprising the normal paraffins and a second effluent, and at least one adsorbent bed on which passes the second effluent, comprising at least one grafted microporous solid, making it possible to obtain a third effluent comprising the monomethyl branched paraffins and a fourth effluent comprising the polymethyl branched paraffins.

Abstract: Described is a novel process for regenerating an ASO contaminated alkylation catalyst containing a sulfone component and a hydrogen halide component. A sulfone-containing mixture containing ASO and which is derived by the removal of a major portion of the hydrogen halide component of the alkylation catalyst is contacted with a reversable base selected from the group consisting of polyvinyl pyridine, amine-substituted styrene divinyl benzene copolymer and mixtures thereof so as to remove at least a portion of the ASO component from the sulfone-containing mixture to thereby produce a treated sulfone-containing mixture. The treated sulfone-containing mixture can further be processed by contacting it with an absorbent material which can include carbon and alumina.

Abstract: Distillate fuel is stabilized against degradation during storage by inserting into storage tanks solid materials containing polar sites to enable polar condensation of the fuel constituents active in degradation. Polyether or polyester polyurethane open cell foams are the prime solid stabilizers proposed.

Abstract: The present invention provides a Lewis acid-catalyzed isoparaffin/olefin alkylation process in which acid consumption and energy costs are decreased by employing an acid sorption stage to separate the Lewis acid catalyst from the alkylate product stream, or from a selected fraction of the alkylate product stream, and desorbing the Lewis acid from the sorption stage with an isoparaffin-containing alkylation process feedstream.

Abstract: A process for the production of aromatic esters or aromatic anhydrides with improved color properties is disclosed. This process comprises treating the aromatic ester or aromatic anhydride with an activated boric acid followed by fractionation.

Abstract: A sample of a hydrocarbon oil containing asphaltenes is chromatographically analyzed by forming a mixture of the oil with a weak solvent. The mixture is passed in contact with a column of a stationary phase of fine solid particles of fully functionalized material, followed by a weak solvent. The solvent, after recovery from the column, is analyzed for aromatics by UV-absorption of UV radiation in the range 200 to 400 nm. The absorbance of the UV light by the irradiated eluents across the UV wavelength range is monitored and the integral of absorbance is derived as a function of photon energy across the wavelength range. The magnitude of the derived integral in at least one time interval corresponding with aromatics in the eluent from the stationary phase is measured as an indication of the level of aromatics in the oil sample. The weak solvent may be followed by a strong solvent which, in turn, may be followed by a strong solvent which is modified by the addition of a hydrogen bonding solvent.

Abstract: In the removal of pure aromatics from aromatic-containing hydrocarbon mixtures by liquid-phase extraction or extractive distillation using a selective solvent, the specific cost of separation can be reduced at the same yield of aromatics or the yield of aromatics can be increased at the same specific cost of separation if the liquid-phase extraction or the extractive distillation is carried out in the presence of a reactive solid. At the same time, substantially aromatic-free raffinates are obtained.

Abstract: This invention relates to a process for drying liquid hydrocarbons using cellulosic membranes.