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    • 2. 发明申请
    • SEPARATION OF DIENES FROM OLEFINS USING IONIC LIQUIDS
    • 使用离子液体从烯烃中分离二氧化碳
    • WO2003059483A2
    • 2003-07-24
    • PCT/US2002/041739
    • 2002-12-31
    • CHEVRON U.S.A. INC.BOUDREAU, Laura, C.DRIVER, Michael, S.MUNSON, Curt, L.
    • BOUDREAU, Laura, C.DRIVER, Michael, S.MUNSON, Curt, L.
    • B01D
    • C10G29/06B01J2219/00308B01J2219/00313B01J2219/00756B01J2219/00759C07C7/152C07C7/156C40B60/14C07C11/00
    • Methods for separating di-olefins from mono-olefins, and olefins from non-olefins such as paraffins, oxygenates and aromatics, are provided. The methods use metal salts which complex both mono-olefins and di-olefins, but which selectively complex di-olefins in the presence of mono-olefins. The metal salts are dissolved or suspended in ionic liquids, which tend to have virtually no vapor pressure. Preferred salts are Group IB salts, more preferably silver and copper salts. A preferred silver salt is silver tetrafluoroborate. A preferred copper salt is silver CuOTf. Preferred ionic liquids are those which form stable solutions, suspensions or dispersions of the metal salts, which do not dissolve unwanted non-olefins, and which do not isomerize the mono- or di-olefins. The equivalents of the metal salt can be adjusted so that di-olefins are selectively adsorbed from mixtures of mono-and di-olefins. Alternatively, both mono- and di-olefins can be adsorbed, and the mono-olefins selectively desorbed. The latter approach can be preferred when non-olefins are also to be separated. The mono- and di-olefin-containing mixture can be in the gas phase or in the liquid phase. The flow of mono- and di-olefin-containing mixture over/through the ionic liquid can be, for example, co-current, counter-current, or staged in stirred tanks, with countercurrent being preferred.
    • 提供了从单烯烃分离二烯烃的方法,以及来自非烯烃如链烷烃,含氧化合物和芳烃的烯烃。 该方法使用复合单烯烃和二烯烃的金属盐,但是在单烯烃存在下选择性复合的二烯烃。 金属盐溶解或悬浮在离子液体中,其倾向于几乎不具有蒸气压。 优选的盐是IB族盐,更优选银和铜盐。 优选的银盐是四氟硼酸银。 优选的铜盐是银CuOTf。 优选的离子液体是形成不溶解不需要的非烯烃并且不使单烯烃或二烯烃异构化的金属盐的稳定溶液,悬浮液或分散体的离子液体。 可以调节金属盐的当量,使得二烯烃从单烯烃和二烯烃的混合物中选择性吸附。 或者,可以吸附单烯烃和二烯烃,并且单烯烃选择性解吸。 当非烯烃也被分离时,后一种方法可以是优选的。 含单烯烃和二烯烃的混合物可以处于气相或液相中。 通过离子液体流过单 - 和二烯烃混合物的流动可以是例如在搅拌釜中的并流,逆流或分级,优选逆流。
    • 6. 发明申请
    • PROCESS FOR THE PURIFICATION OF OLEFINS
    • 烯烃的纯化方法
    • WO01098239A1
    • 2001-12-27
    • PCT/US2001/017449
    • 2001-05-29
    • C07B61/00C07B63/00C07C1/04C07C2/06C07C5/327C07C7/04C07C7/148C07C7/152C07C11/02C07C11/04C07C11/06C07C11/08C10G2/00C10G29/00C10G29/06C10G55/04C10G55/06C10G57/02C10G67/02C10G70/00C40B50/08C40B60/14G01N30/02
    • C10G70/002B01J2219/00047B01J2219/00306B01J2219/00599B01J2219/00702B01J2219/0072B01J2219/00759C07B63/00C07C1/0485C07C7/152C07C11/02C10G29/00C40B50/08C40B60/14G01N30/02Y02P30/42
    • Methods for separating olefins from non-olefins, such as paraffins, including cycloparaffins, oxygenates and aromatics, are provided. The methods use metal salts to complex olefins, allowing the non-olefins to be separated by a variety of methods, including decantation distillation and gravimetric separation. The metal salts are dissolved or dispersed in ionic liquids, which tend to have virtually no vapor pressure, and which poorly solubilize the non-olefins. Accordingly, the non-olefins phase separate well, and can be distilled without carrying over any of the ionic liquid into the distillate. Preferred salts are Group IB salts, more preferably silver salts. A preferred silver salt is silver tetrafluoroborate. Preferred ionic liquids are those which form stable solutions or dispersions of the metal salts, and which do not dissolve the non-olefins. Further, if the olefins are subject to isomerization, the ionic liquid is preferably relatively non-acidic. The methods involve forming a solution or dispersion of a suitable olefin-complexing salt in an appropriate ionic liquid. An olefin-containing mixture is contacted with the ionic liquid/salt solution, and the olefins are adsorbed. After the paraffins are removed, the olefins can be isolated by desorption. The olefin-containing mixture over/through the ionic liquid phase. The flow of the olefin-containing mixtures over/through the ionic liquid can be, for example, co-current, counter-current, or staged in stirred tanks. Countercurrent is preferred as it is the most efficient. The methods can be optimized using combinatirial chemistry.
    • 提供了从非烯烃如链烷烃(包括环烷烃,含氧化合物和芳族化合物)中分离烯烃的方法。 该方法使用金属盐络合烯烃,允许通过各种方法分离非烯烃,包括倾析蒸馏和重量分离。 金属盐溶解或分散在离子液体中,其倾向于几乎不具有蒸气压,并且使非烯烃的溶解性差。 因此,非烯烃相分离井,并且可以蒸馏而不将任何离子液体输送到馏出物中。 优选的盐是IB族盐,更优选银盐。 优选的银盐是四氟硼酸银。 优选的离子液体是形成金属盐的稳定溶液或分散体并且不溶解非烯烃的离子液体。 此外,如果烯烃经历异构化,离子液体优选是相对非酸性的。 所述方法包括在合适的离子液体中形成合适的烯烃络合盐的溶液或分散体。 使含烯烃的混合物与离子液体/盐溶液接触,并且吸附烯烃。 在除去石蜡之后,可以通过解吸分离烯烃。 含烯烃的混合物超过/通过离子液相。 通过离子液体的/通过离子液体的含烯烃混合物的流动可以是例如在搅拌釜中的并流,逆流或分级。 逆流是首选,因为它是最有效的。 该方法可以使用组合化学方法进行优化。