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170 条记录 (耗时 0.018 秒)

    Regeneration and stabilization of dehydrogenation catalyst
    1.
    发明授权
    Regeneration and stabilization of dehydrogenation catalyst 失效
    脱氢催化剂的再生和稳定化

    公开(公告)号：US5695724A

    公开(公告)日：1997-12-09

    申请号：US557088

    申请日：1995-12-05

    申请人： Shiou-Shan Chen ,  Shyh-Yuan Hwang ,  Slawomir A. Oleksy ,  Sanjeev Ram

    发明人： Shiou-Shan Chen ,  Shyh-Yuan Hwang ,  Slawomir A. Oleksy ,  Sanjeev Ram

    IPC分类号： B01J20/34 ,  B01J23/04 ,  B01J23/78 ,  B01J23/94 ,  B01J38/04 ,  B01J38/06 ,  B01J38/08 ,  C07B61/00 ,  C07C5/333 ,  C07C5/42 ,  C07C15/44 ,  C07C15/46 ,  B01J8/02

    CPC分类号： C07C5/3332 ,  B01J23/04 ,  B01J23/78 ,  B01J23/94 ,  B01J38/04 ,  B01J38/06 ,  B01J38/08 ,  C07C2523/04 ,  C07C2523/745 ,  C07C2523/78 ,  Y02P20/584

    摘要： A method and associated apparatus for regenerating and/or stabilizing catalyst used in dehydrogenation of alkylaromatic hydrocarbons is disclosed. The alkylaromatic hydrocarbon (1) and steam (2) are combined to form feedstream (3) and pass into reactor (50). The ensuing product stream (4) is reheated in heater (52) to restore the heat lost and passed as partially converted reactant stream (5) into second reactor (54) and leaves as stream (6) comprising the dehydrogen product. Restoration and/or stabilization of catalyst is accomplished by an alkali metal compound which is fed into feedstream (2) and/or product stream (5) via supply means (46 and 66), respectively. The amount of alkali metal compound entering the reactor(s) is monitored by means (42 and 62) which may in turn be coupled to activating means (44 and 64) to signal and activate the supply means. This method and apparatus permit the restoration and/or stabilization of the catalyst to be performed without interrupting the dehydrogenation reaction.

    摘要翻译： PCT No.PCT / US94 / 07474 Sec。 371 1995年12月5日第 102（e）日期1995年12月5日PCT提交1994年6月30日PCT公布。 第WO95 / 01947号公报 公开了一种用于烷基芳族烃脱氢中用于再生和/或稳定催化剂的方法和相关装置，1995年1月19日。 将烷基芳族烃（1）和蒸汽（2）组合以形成原料流（3）并进入反应器（50）。 随后的产物流（4）在加热器（52）中再加热以恢复热量的损失，并且作为部分转化的反应物流（5）进入第二反应器（54）并作为包含脱氢产物的流（6）离开。 催化剂的还原和/或稳定通过分别经由供给装置（46和66）进料到进料流（2）和/或产物流（5）中的碱金属化合物来实现。 通过装置（42和62）监测进入反应器的碱金属化合物的量，该装置又可耦合到激活装置（44和64）以发出信号并激活供应装置。 该方法和装置允许催化剂的恢复和/或稳定化而不中断脱氢反应。

    Process for producing monoalkenyl aromatic hydrocarbon compound
    4.
    发明授权
    Process for producing monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制备方法

    公开(公告)号：US5527977A

    公开(公告)日：1996-06-18

    申请号：US266145

    申请日：1994-06-27

    申请人： Makoto Takagawa ,  Kenichi Nakamura ,  Kinji Kato ,  Akio Hashimoto ,  Takayo Sasaki

    发明人： Makoto Takagawa ,  Kenichi Nakamura ,  Kinji Kato ,  Akio Hashimoto ,  Takayo Sasaki

    IPC分类号： B01J23/04 ,  C07C2/72 ,  C07C15/44

    CPC分类号： C07C15/44 ,  B01J23/04 ,  C07C2/72 ,  C07C2523/02 ,  C07C2523/04

    摘要： Their is disclosed a process for producing a monoalkenyl aromatic hydrocarbon compound (e.g. 5-(o-tolyl)-2-pentene) which comprises the steps of alkenylating a side chain of an aromatic hydrocarbon compound having at lease one hydrogen atom bonded to .alpha.-position of the side chain (e.g. alkylbenzene) by the use of a conjugated diene having 4 to 5 carbon atoms (e.g. 1-3 butadiene) in the presence an alkali metal-based catalyst supported on a carrier; removing at least part of the catalyst from the resultant reaction product by separating the same; inactivating and optionally removing the catalyst contained in the reaction product; and thereafter distilling the reaction produce in liquid form to separate and recover the objective monoalkenyl aromatic hydrocarbon compound. By virtue of using the above specific method, the process can prevent the change in quality and properly of the objective product even during atmospheric distillation, produce the objective product with high purity in high recovery race and operate a distillation column during a long stable period of time.

    摘要翻译： 公开了一种制备单链烯基芳族烃化合物（例如5-（邻甲苯基）-2-戊烯）的方法，该方法包括使具有至少一个氢原子的芳族烃化合物的侧链链烯基化的步骤， 在负载在载体上的碱金属类催化剂存在下，通过使用具有4至5个碳原子的共轭二烯（例如1-3个丁二烯），侧链（例如烷基苯）的位置; 通过分离其从所得反应产物中除去至少一部分催化剂; 灭活和任选地除去反应产物中所含的催化剂; 然后以液体形式蒸馏反应产物以分离和回收目标单链烯基芳族烃化合物。 通过使用上述具体方法，该方法即使在常压蒸馏中也可以防止目标产物的质量变化和适当的改变，在高回收率种族中生产高纯度的目的产物，并在长时间稳定的时间段内操作蒸馏塔 时间。

    Process for producing a monoalkenyl aromatic hydrocarbon compound
    5.
    发明授权
    Process for producing a monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制造方法

    公开(公告)号：US5444172A

    公开(公告)日：1995-08-22

    申请号：US170493

    申请日：1993-12-20

    申请人： Makoto Takagawa ,  Kenji Inamasa ,  Norio Fushimi ,  Akio Hashimoto ,  Takayo Sasaki

    发明人： Makoto Takagawa ,  Kenji Inamasa ,  Norio Fushimi ,  Akio Hashimoto ,  Takayo Sasaki

    IPC分类号： B01J23/04 ,  B01J27/232 ,  C07B61/00 ,  C07C2/72 ,  C07C15/44

    CPC分类号： B01J27/232 ,  B01J23/04 ,  C07C2/72 ,  C07C2521/04 ,  C07C2523/04 ,  C07C2527/232 ,  Y02P20/52

    摘要： There is disclosed a process for producing a monoalkenylbenzene which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at .alpha.-position of the side chain (such as xylene) with a conjugated diene having 4 or 5 carbon atoms (such as butadiene) in the presence of a catalyst produced by calcining the mixture of a basic potassium compound and alumina and then heat treating the calcined product together with metallic sodium in an atmosphere of an inert gas. According to the aforesaid process, an industrially useful monoalkenylbenzene can be produced in high yield at a low cost with enhanced safety.

    摘要翻译： 公开了一种单链烯基苯的制备方法，该方法包括将具有至少一个在侧链（例如二甲苯）的α位键合的氢原子的芳族烃化合物的侧链与具有4或5个碳原子的共轭二烯链烯基化 （例如丁二烯）在通过煅烧碱性钾化合物和氧化铝的混合物产生的催化剂存在下，然后在惰性气体气氛中将煅烧产物与金属钠一起热处理。 根据上述方法，可以低成本，高安全性地以高产率生产工业上有用的单烯基苯。

    Process for producing a monoalkenyl aromatic hydrocarbon compound
    6.
    发明授权
    Process for producing a monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制造方法

    公开(公告)号：US5436381A

    公开(公告)日：1995-07-25

    申请号：US170495

    申请日：1993-12-20

    申请人： Makoto Takagawa ,  Kinji Kato ,  Norio Fushimi ,  Ko Kedo

    发明人： Makoto Takagawa ,  Kinji Kato ,  Norio Fushimi ,  Ko Kedo

    IPC分类号： B01J23/04 ,  C07B61/00 ,  C07C2/66 ,  C07C2/72 ,  C07C15/44

    CPC分类号： B01J23/04 ,  C07C2/72 ,  C07C2521/04 ,  C07C2523/04

    摘要： There is disclosed a process for producing a monoalkenylbenzene which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at .alpha.-position of the side chain (such as xylene) with a conjugated diene having 4 or 5 carbon atoms (such as butadiene) in the presence of a catalyst produced by calcining the mixture of potassium hydroxide and aluminum hydroxide and then heat treating the calcined product together with metallic sodium in an atmosphere of an inert gas. According to the aforesaid process, an industrially useful monoalkenylbenzene can be produced in high yield at a low cost with enhanced safety.

    摘要翻译： 公开了一种单链烯基苯的制备方法，该方法包括将具有至少一个在侧链（例如二甲苯）的α位键合的氢原子的芳族烃化合物的侧链与具有4或5个碳原子的共轭二烯链烯基化 （例如丁二烯）在通过煅烧氢氧化钾和氢氧化铝的混合物产生的催化剂存在下，然后在惰性气体气氛中与金属钠一起热处理煅烧产物。 根据上述方法，可以低成本，高安全性地以高产率生产工业上有用的单烯基苯。

    Process for producing monoalkenyl aromatic hydrocarbon compound
    8.
    发明授权
    Process for producing monoalkenyl aromatic hydrocarbon compound 失效
    单链烯基芳烃化合物的制备方法

    公开(公告)号：US5334794A

    公开(公告)日：1994-08-02

    申请号：US47811

    申请日：1993-04-15

    申请人： Norio Fushimi ,  Ko Kedo ,  Kenji Inamasa ,  Makoto Takagawa

    发明人： Norio Fushimi ,  Ko Kedo ,  Kenji Inamasa ,  Makoto Takagawa

    IPC分类号： B01J23/04 ,  C07B61/00 ,  C07C2/72 ,  C07C15/44

    CPC分类号： B01J23/04 ,  C07C2/72 ,  C07C2521/06 ,  C07C2523/04

    摘要： A process for producing a monoalkenyl aromatic hydrocarbon compound which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at an .alpha.-position of the side chain (such as xylene) with a conjugated diene having 4 or 5 carbon atoms (such as butadiene) in the presence of a catalyst comprising a mixture obtained by heat treating metallic sodium together with a mixture of a zirconium oxide and a potassium compound in an inert gas atmosphere. An industrially useful monoalkenyl aromatic hydrocarbon compound is produced in a high yield at a low cost with enhanced safety from a specific aromatic hydrocarbon compound and a specific conjugated diene compound.

    摘要翻译： 一种单链烯基芳族烃化合物的制造方法，其特征在于，将具有至少一个在侧链的α位键合的氢原子（例如二甲苯）的芳香族烃化合物的侧链与具有4或5个碳原子的共轭二烯 在包含通过在惰性气体气氛中将金属钠与氧化锆和钾化合物的混合物一起热处理获得的混合物的催化剂存在下的原子（例如丁二烯）。 以低成本高产率生产工业上有用的单链烯基芳烃化合物，从特定芳烃化合物和特定共轭二烯化合物的安全性提高。