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    • 6. 发明授权
    • Alkylated aromatics production
    • 烷基化芳烃生产
    • US08629311B2
    • 2014-01-14
    • US12721326
    • 2010-03-10
    • Matthew J. VincentVijay NandaMaruti BhandarkarBrian MaerzTerry E. Helton
    • Matthew J. VincentVijay NandaMaruti BhandarkarBrian MaerzTerry E. Helton
    • C07C2/66C07C6/12
    • C07C2/66C07C6/126C07C7/13C07C2529/08C07C2529/18C07C2529/70C07C15/04C07C15/073C07C15/085C07C15/02
    • Disclosed is a process for the production of alkylated aromatics by contacting a feed stream comprising an alkylatable aromatic, an alkylating agent and trace amounts of water and impurities in the presence of first and second alkylation catalysts wherein the water and impurities are removed in order to improve the cycle length of such alkylation catalysts. Water and a portion of impurities are removed in a dehydration zone. A first alkylation zone having a first alkylation catalyst which, in some embodiments is a large pore molecular sieve, acts to remove a larger portion of impurities, such as nitrogenous and other species, and to alkylate a smaller portion of the alkylatable aromatic compound. A second alkylation zone, which in some embodiments is a medium pore molecular sieve, acts to remove a smaller portion of impurities, and to alkylate a larger portion of the alkylatable aromatic compound.
    • 公开了通过在第一和第二烷基化催化剂存在下使包含可烷基化芳族化合物,烷基化剂和痕量水和杂质的进料流接触来生产烷基化芳族化合物的方法,其中除去水和杂质以改善 这种烷基化催化剂的循环长度。 在脱水区中除去水和一部分杂质。 具有第一烷基化催化剂的第一烷基化区,在一些实施方案中为大孔分子筛,起到除去较大部分杂质如氮和其它物质的作用,并将较小部分的可烷基化芳族化合物烷基化。 在一些实施方案中,第二烷基化区是中孔分子筛,起到除去较少部分杂质的作用,并使大部分可烷基化芳族化合物烷基化。