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    Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds
    1.
    发明授权
    Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds 有权
    液相芳烃烷基化方法，包括用极性化合物原位催化剂再活化

    公开(公告)号：US06909026B2

    公开(公告)日：2005-06-21

    申请号：US10318882

    申请日：2002-12-13

    申请人： Ajit B. Dandekar ,  Thomas Francis Degnan ,  John P. McWilliams ,  Chaya R. Venkat

    发明人： Ajit B. Dandekar ,  Thomas Francis Degnan ,  John P. McWilliams ,  Chaya R. Venkat

    IPC分类号： C07C2/66 ,  C07C2/68

    CPC分类号： C07C2/66 ,  C07C2529/08 ,  C07C2529/18 ,  C07C2529/40 ,  C07C2529/50 ,  C07C2529/65 ,  C07C2529/70 ,  Y02P20/584 ,  C07C15/073

    摘要： The catalyst becomes at least partially deactivated by sorbing catalyst poisons present in the feed during a process for alkylating aromatics by contacting a feed containing benzene, toluene, xylenes, alkylbenzenes, naphthalene or substituted naphthalenes under liquid phase alkylating conditions with C2-C16 olefins in the presence of MCM-22, MCM-36, MCM-49, MCM-56, ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-48, ZSM-50, ZSM-4, ZSM-18, ZSM-20, Zeolite X, Zeolite Y, USY, mordenite or offretite to provide an alkylated aromatic product. The at least partially deactivated catalyst can be treated in situ by contacting with at least one polar compound having a dipole moment of at least 0.05 Debyes and selected from the group consisting of acetic acid, formic acid, water, and carbon monoxide, under conditions of temperature and pressure employed in the liquid phase alkylating conditions which are sufficient to at least partially desorb the catalyst poison from the catalyst.

    摘要翻译： 在芳族化合物的烷基化方法中，通过在液相烷基化条件下将含有苯，甲苯，二甲苯，烷基苯，萘或取代萘的进料与C 2 H 2化合物接触，使催化剂至少部分失活， 在MCM-22，MCM-36，MCM-49，MCM-56，ZSM-5，ZSM-11，ZSM-12，ZSM-23等的存在下， ZSM-35，ZSM-48，ZSM-50，ZSM-4，ZSM-18，ZSM-20，沸石X，沸石Y，USY，丝光沸石或黑斑，提供烷基化芳族产物。 所述至少部分失活的催化剂可以通过与至少一种偶极矩至少为0.05德拜的极性化合物接触而原位处理，并选自乙酸，甲酸，水和一氧化碳，条件是 在液相烷基化条件下使用的足以使催化剂毒物至少部分解吸的催化剂的温度和压力。

    Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds
    2.
    发明授权
    Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds 有权
    液相芳烃烷基化方法，包括用极性化合物原位催化剂再活化

    公开(公告)号：US06525234B1

    公开(公告)日：2003-02-25

    申请号：US09717705

    申请日：2000-11-21

    申请人： Ajit B. Dandekar ,  Thomas Francis Degnan ,  John P. McWilliams ,  Chaya R. Venkat

    发明人： Ajit B. Dandekar ,  Thomas Francis Degnan ,  John P. McWilliams ,  Chaya R. Venkat

    IPC分类号： C07C268

    CPC分类号： C07C2/66 ,  C07C2529/08 ,  C07C2529/18 ,  C07C2529/40 ,  C07C2529/50 ,  C07C2529/65 ,  C07C2529/70 ,  Y02P20/584 ,  C07C15/073

    摘要： A process for alkylating aromatics comprises: i) contacting a feed containing alkylatable aromatic, e.g., benzene, under liquid phase alkylating conditions with an alkylating agent, e.g., ethylene, in the presence of an alkylation catalyst comprising a porous crystalline material, e.g., MCM-22, to provide an alkylated aromatic product during which contacting said catalyst becomes at least partially deactivated by sorbing catalyst poisons present in said feed; ii) treating said at least partially deactivated catalyst in situ by contacting with at least one polar compound, e.g., water or acetic acid, having a dipole moment of at least 0.05 Debyes under conditions of temperature and pressure employed in said liquid phase alkylating conditions which are sufficient to at least partially desorb said catalyst poison from said catalyst; and iii) collecting said alkylated aromatic product.

    摘要翻译： 烷基化芳族化合物的方法包括：i）在液相烷基化条件下，在包含多孔结晶材料的烷基化催化剂（例如MCM）的存在下，使含有可烷基化芳族化合物（例如苯）的进料与烷基化试剂例如乙烯接触 -22，以提供烷基化芳族产物，其中通过吸附所述进料中存在的催化剂毒物使所述催化剂接触至少部分失活; ii）通过与至少一种极性化合物接触来处理所述至少部分失活的催化剂，例如， 水或乙酸，其在所述液相烷基化条件下使用的温度和压力条件下的偶极矩至少为0.05德拜，其足以使所述催化剂毒物至少部分地解吸所述催化剂毒物; 和ii）收集所述烷基化芳族产物。

    Regeneration of aromatic alkylation catalysts using hydrocarbon stripping
    8.
    发明授权
    Regeneration of aromatic alkylation catalysts using hydrocarbon stripping 有权
    使用烃汽提再生芳烃烷基化催化剂

    公开(公告)号：US06911568B1

    公开(公告)日：2005-06-28

    申请号：US10239372

    申请日：2000-04-28

    申请人： Ajit B. Dandekar ,  John P. McWilliams ,  C. Morris Smith ,  Michael A. Better ,  Wei-Ping Tai

    发明人： Ajit B. Dandekar ,  John P. McWilliams ,  C. Morris Smith ,  Michael A. Better ,  Wei-Ping Tai

    IPC分类号： C07C2/66

    CPC分类号： C07C2/66 ,  Y02P20/584 ,  C07C15/085 ,  C07C15/073

    摘要： A process for alkylating an alkylatable aromatic compound is disclosed, in which the process includes: (a) contacting the alkylatable aromatic compound and an alkylating agent with an alkylation catalyst under alkylation conditions; and (b) when said alkylation catalyst has become at least partially deactivated, contacting said alkylation catalyst with a C1-C8 hydrocarbon under alkylation catalyst reactivation conditions. The process provides comparable rejuvenation of catalyst activity as air rengenaration with minimal or no increase in amounts of undesirable byproducts such as polypropylbenzenes in the case of benzene alkylation with propylene.

    摘要翻译： 公开了一种烷基化可烷基化芳族化合物的方法，其中该方法包括：（a）在烷基化条件下使烷基化芳族化合物与烷基化剂与烷基化催化剂接触; 和（b）当所述烷基化催化剂至少部分失活时，在烷基化催化剂再活化条件下使所述烷基化催化剂与C 1 -C 8 -C 8烃接触。 在苯与丙烯烷基化的情况下，该方法提供了与空气再生相当的催化剂活性的可比的复原，其中不希望的副产物（例如聚丙苯）的量最小或没有增加。