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    • 2. 发明授权
    • Process for the dehydrogenation of hydrocarbons
    • 烃脱氢方法
    • US5227566A
    • 1993-07-13
    • US779746
    • 1991-10-21
    • Paul R. CottrellMichael E. Fettis
    • Paul R. CottrellMichael E. Fettis
    • B01J23/96B01J38/42C07C5/32
    • B01J38/42B01J23/96C07C5/325Y02P20/584
    • A process for the dehydrogenation of a hydrocarbon selected from the group consisting of propane and butane in the presence of a catalyst comprising platinum and a carrier material. Reconditioning of catalyst particles containing platinum by transferring the catalyst particles through a combustion zone, a drying zone and a re-dispersion zone improves the process. Drying of the catalyst particles immediately after the combustion of coke improves the operation of a platinum re-dispersion zone. The lower moisture content in the re-dispersion zone allows the equilibrium reaction between hydrogen chloride and oxygen on the one hand, and water and chlorine on the other hand to be shifted to the production of chlorine. This shift of the equilibrium reaction can be further improved by maintaining an oxygen-enriched environment within the platinum re-dispersion zone. The use of a much lower chloride concentration in the re-dispersion zone reduces the emissions of hydrogen chloride from the regeneration zone.
    • 在包含铂和载体材料的催化剂存在下,选自丙烷和丁烷的烃的脱氢方法。 通过将催化剂颗粒转移通过燃烧区域,干燥区域和再分散区域来改造含有铂的催化剂颗粒改善了该方法。 在焦炭燃烧之后立即干燥催化剂颗粒改善了铂再分散区的操作。 再分散区域中的较低水分含量一方面允许氯化氢和氧气之间的平衡反应,另一方面水和氯也转变为氯的产生。 通过保持铂再分散区内的富氧环境,可以进一步提高平衡反应的这种转变。 在再分散区域中使用低得多的氯化物浓度减少了来自再生区域的氯化氢的排放。
    • 3. 发明授权
    • Moving bed regeneration process with separate dispersion and chloriding
steps
    • 移动床再生过程与分散和氯化步骤分开
    • US5151392A
    • 1992-09-29
    • US662302
    • 1991-02-28
    • Michael E. FettisPaul R. Cottrell
    • Michael E. FettisPaul R. Cottrell
    • B01J8/12B01J38/44C10G35/10
    • B01J8/12B01J38/44C10G35/10
    • A process for reforming hydrocarbons has a regeneration process for reconditioning catalyst particles containing platinum that improves the process by transferring the catalyst particles through a combustion zone, a drying zone, a redispersion zone and a chloride uptake zone. Drying of the catalyst particles immediately after the combustion of coke improves the operation of a platinum redispersion zone and a chloride uptake zone. Separate platinum redispersion zones and chloride uptake zones are provided so that the dried catalyst that enters the platinum redispersion zone can be contacted with a high concentration of chlorine with a lower overall concentration of chloride compounds in the redispersion zone. The lower moisture content allows the equilibrium reaction between hydrogen chloride and oxygen on the one hand, and water and chlorine on the other hand to be shifted to the production of chlorine. This shift of the equilibrium reaction can be further improved by maintaining an oxygen-enriched environment within the platinum redispersion zone. Conversely, the chloride uptake zone would have essentially all the chloride contained therein in the form of hydrogen chloride. Only a relatively low concentration of hydrogen chloride is needed and the chloride uptake zone can be designed such that virtually all of the chloride compounds entering the zone are taken up with the catalyst. The uptake of virtually all the hydrogen chloride in the chloride uptake zone and the use of a much lower chloride concentration in the redispersion zone reduces the emissions of hydrogen chloride from the regeneration zone. Aside from improving the platinum redispersion, the overall reduction of chlorides in the platinum redispersion zone allows the elimination of a costly halogen circulation loop that was previously needed in a halogenation zone to maintain a sufficient chlorine concentration for redispersion of the platinum.
    • 重整碳氢化合物的方法具有用于修复含有铂的催化剂颗粒的再生方法,其通过将催化剂颗粒转移通过燃烧区,干燥区,再分散区和氯化物吸收区来改善该过程。 在焦炭燃烧之后立即干燥催化剂颗粒改善了铂再分散区和氯化物吸收区的操作。 提供分离的铂再分散区和氯化物吸收区,使得进入铂再分散区的干燥的催化剂可以与再分散区中氯化物化合物的较低浓度的氯接触。 一方面,较低的水分含量允许氯化氢和氧气之间的平衡反应,另一方面水和氯转移到氯的产生。 通过保持铂再分散区内的富氧环境,可以进一步提高平衡反应的这种转变。 相反,氯化物吸收区将基本上以氯化氢的形式含有其中所含的所有氯化物。 仅需要相对低浓度的氯化氢,并且可以设计氯化物吸收区,使得几乎所有进入该区的氯化物都被催化剂吸收。 在氯化物吸收区中几乎所有的氯化氢的摄取和在再分散区中使用低得多的氯化物浓度减少了来自再生区的氯化氢的排放。 除了改进铂再分散之外,铂再分散区中氯化物的总体还原能够消除先前在卤化区中需要的昂贵的卤素循环回路,以保持足够的氯浓度用于铂的再分散。
    • 5. 发明授权
    • Moving bed regeneration process with combined drying and dispersion steps
    • 移动床再生过程与组合干燥和分散步骤
    • US5457077A
    • 1995-10-10
    • US176159
    • 1993-12-30
    • Robert R. WilliamsonMichael E. FettisPaul R. Cottrell
    • Robert R. WilliamsonMichael E. FettisPaul R. Cottrell
    • B01J23/96B01J38/44
    • B01J38/44B01J23/96
    • A regeneration process for reconditioning catalyst particles containing platinum by transferring the catalyst particles through a combustion zone and a reconditioning zone is disclosed. Drying of the catalyst particles and redispersion of the platinum occur simultaneously in a single reconditioning zone. Catalyst that enters the reconditioning zone is contacted countercurrently with a heated gas stream containing chlorine and oxygen. A low moisture content of the gas stream aids drying and allows the equilibrium reaction between hydrogen chloride and oxygen on the one hand, and water and chlorine on the other hand to be shifted to chlorine. This shift of the equilibrium reaction can be further improved by maintaining an oxygen-enriched environment within the reconditioning zone. By eliminating the need for separate drying and redispersion zones used previously, the regeneration apparatus is less expensive to build and the regeneration process is less expensive to operate.
    • 公开了一种用于通过将催化剂颗粒转移通过燃烧区和再生区来重新调节含有铂的催化剂颗粒的再生方法。 催化剂颗粒的干燥和铂的再分散同时发生在单个再生区中。 进入再生区的催化剂与含有氯和氧的加热气流逆流接触。 气流的低水分含量一方面有助于干燥,并允许氯化氢和氧气之间的平衡反应,另一方面水和氯也被转移到氯气中。 通过保持再生区内的富氧环境,可以进一步提高平衡反应的这种转变。 通过消除对先前使用的单独的干燥和再分散区的需要,再生设备的建造成本较低,并且再生过程操作成本较低。
    • 6. 发明授权
    • Process for the dehydrogenation of hydrocarbons
    • 烃脱氢方法
    • US5087792A
    • 1992-02-11
    • US638952
    • 1991-01-09
    • Paul R. CottrellMichael E. Fettis
    • Paul R. CottrellMichael E. Fettis
    • B01J23/96B01J38/42C07C5/32
    • B01J23/96B01J38/42C07C5/325Y02P20/584
    • A process for the dehydrogenation of a hydrocarbon selected from the group consisting of propane and butane in the presence of a catalyst comprising platinum and a carrier material. Reconditioning of catalyst particles containing platinum by transferring the catalyst particles through a combustion zone, a drying zone and a re-dispersion zone improves the process. Drying of the catalyst particles immediately after the combustion of coke improves the operation of a platinum re-dispersion zone. The lower moisture content in the re-dispersion zone allows the equilibrium reaction between hydrogen chloride and oxygen on the one hand, and water and chlorine on the other hand to be shifted to the production of chlorine. This shift of the equilibrium reaction can be further improved by maintaining an oxygen-enriched environment within the platinum re-dispersion zone. The use of a much lower chloride concentration in the re-dispersion zone reduces the emissions of hydrogen chloride from the regeneration zone.
    • 在包含铂和载体材料的催化剂存在下,选自丙烷和丁烷的烃的脱氢方法。 通过将催化剂颗粒转移通过燃烧区域,干燥区域和再分散区域来改造含有铂的催化剂颗粒改善了该方法。 在焦炭燃烧之后立即干燥催化剂颗粒改善了铂再分散区的操作。 再分散区域中的较低水分含量一方面允许氯化氢和氧气之间的平衡反应,另一方面水和氯也转变为氯的产生。 通过保持铂再分散区内的富氧环境,可以进一步提高平衡反应的这种转变。 在再分散区域中使用低得多的氯化物浓度减少了来自再生区域的氯化氢的排放。