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    • 4. 发明申请
    • PROCESS FOR SELECTIVELY SEPARATING HYDROGEN, OR BOTH HYDROGEN AND CARBON MONOXIDE FROM OLEFINIC HYDROCARBONS
    • 氢氧化氢,二氧化碳和二氧化碳的选择性分离方法
    • WO1998029368A1
    • 1998-07-09
    • PCT/US1997023875
    • 1997-12-31
    • EXXON CHEMICAL PATENTS INC.
    • EXXON CHEMICAL PATENTS INC.VAUGHN, Stephen, N.OU, John, D.DANIEL, Lawrence, G.
    • C07C07/148
    • B01D53/8671B01D53/864B01D53/869B01D2257/108B01D2257/504C07C7/14816Y02P20/152C07C11/00
    • A process for the separation, and removal, of hydrogen, or both hydrogen and carbon monoxide, from a mixture of these gases with olefinic hydrocarbons. In one embodiment, a mixture constituted of hydrogen and one or more reactive unsaturated hydrocarbons is contacted with oxygen or an oxygen-containing gas, over a catalyst at reaction conditions sufficient to oxidize the hydrogen component of the mixture to form water, while suppressing reaction of the reactive unsaturated hydrocarbon. In a second embodiment, there is included a two-reaction-zone series wherein effluent from the first reaction zone, wherein the mixture includes hydrogen, carbon monoxide and at least one reactive unsaturated hydrocarbon, is contacted with oxygen or an oxygen-containing gas, and reacted over an oxidation catalyst at conditions sufficient to oxidize the carbon monoxide component of the mixture to form carbon dioxide and suppress hydrogenation of the reactive unsaturated hydrocarbons. In a third embodiment, there is included a three-reaction-zone series wherein effluent from the second reaction zone, wherein the mixture includes carbon monoxide, water, and at least one reactive unsaturated hydrocarbon, is reacted over a water-gas-shift and hydrogenation catalyst at conditions sufficient to react carbon monoxide component of the mixture to form carbon dioxide and hydrogen, and hydrogenate said reactive unsaturated hydrocarbon with the resulting hydrogen. In each embodiment, reactive unsaturated hydrocarbons denuded of hydrogen, or both hydrogen and carbon monoxide are recovered.
    • 从这些气体与烯烃的混合物中分离和除去氢气或氢气和一氧化碳两者的方法。 在一个实施方案中,将由氢和一种或多种反应性不饱和烃组成的混合物与氧气或含氧气体在催化剂上接触,反应条件足以氧化混合物的氢组分以形成水,同时抑制 反应性不饱和烃。 在第二实施方案中,包括双反应区系列,其中来自第一反应区的流出物,其中混合物包括氢气,一氧化碳和至少一种反应性不饱和烃与氧气或含氧气体接触, 并在足以氧化混合物的一氧化碳组分以形成二氧化碳并抑制反应性不饱和烃氢化的条件下在氧化催化剂上反应。 在第三实施方案中,包括三反应区系列,其中来自第二反应区的流出物,其中混合物包括一氧化碳,水和至少一种反应性不饱和烃,通过水煤气变换和 氢化催化剂在足以使混合物的一氧化碳组分反应形成二氧化碳和氢气的条件下,并将所述反应性不饱和烃与所得氢气氢化。 在每个实施方案中,回收了被解释为氢或氢和一氧化碳的反应性不饱和烃。
    • 10. 发明申请
    • SOLVENT ASSISTED PROCESS FOR RECOVERY OF PHTHALIC ANHYDRIDE IN THE LIQUID PHASE BY DISTILLATION
    • 用于通过蒸馏在液相中回收邻苯二甲酸酐的溶剂辅助方法
    • WO1998023572A1
    • 1998-06-04
    • PCT/US1997022413
    • 1997-11-26
    • EXXON CHEMICAL PATENTS INC.
    • EXXON CHEMICAL PATENTS INC.BAIEL, James, J.JONES, Larry, O.GRAY, Ralph, O., Jr.AGOSTO, Magdiel
    • C07C51/573
    • C07C51/573C07C63/16
    • A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature of about 130 DEG C or greater with a first stream comprising a solvent having a boiling point in the range between about 150 to 350 DEG C and a freezing point of less then 40 DEG C, and, optionally, at least one by-product selected from the group consisting of: maleic anhydride, citraconic anhydride, benzoic acid and phthalic anhydride, in a contacting means such that a substantial portion of the phthalic anhydride contained within the vapor phase oxidation product transfers from the vapor phase to a liquid phase and a substantial portion of the first stream which are more volatile than phthalic anhydride transfer from the liquid phase to the vapor phase and wherein a vapor-to-liquid weight ratio in the range of between about 2 to 20 is exhibited within the contacting means, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt.%, preferably 90-100 wt.%, without the formation of an intermediate solid phase.
    • 从气相氧化产物中回收邻苯二甲酸酐作为液体的方法,该方法包括将具有约130℃或更高温度的气相氧化产物与包含沸点在约150℃范围内的溶剂的第一流混合 350℃,低于40℃的凝固点,以及任选的至少一种选自马来酸酐,柠康酸酐,苯甲酸和邻苯二甲酸酐的副产物,其接触方式使得 气相氧化产物中所含的邻苯二甲酸酐的相当大部分从汽相转移到液相和大部分第一物流,其比邻苯二甲酸酐从液相转移到汽相更易挥发,其中a 在接触装置内表现出约2-20范围内的气 - 液重量比,从而形成液相邻苯二甲酸 邻苯二甲酸酐浓度在约50-100重量%之间,优选90-100重量%的范围内,而不形成中​​间固相。