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公开(公告)号：US06313362B1
公开(公告)日：2001-11-06
申请号：US09213798
申请日：1998-12-17
IPC分类号： C07C264
CPC分类号： C07C15/085 , C07C15/073
摘要： Akylation product is contacted with a purification medium in a liquid phase pre-reaction step to remove impurities and form a purified stream. The purified stream may then be further processed by liquid phase transalkylation to convert the polyalkylated aromatic compound to a monoalkylated aromatic compound. The process may use a large pore molecular sieve catalyst such as MCM-22 as the purification medium in the pre-reaction step because of its high reactivity for alkylation, strong retention of catalyst poisons and low reactivity for oligomerization under the pre-reactor conditions. Olefins, diolefins, styrene, oxygenated organic compounds, sulfur containing compounds, nitrogen containing compounds and oligomeric compounds are removed.
摘要翻译： 将Akylation产物在液相预反应步骤中与净化介质接触以除去杂质并形成纯化的物流。 然后可以通过液相烷基转移进一步处理纯化的物流，以将多烷基化芳族化合物转化为单烷基化芳族化合物。 在预反应步骤中，该方法可以使用大孔分子筛催化剂例如MCM-22作为纯化介质，因为其在烷基化反应活性高，催化剂毒物强烈的保留和在反应器前条件下的低聚反应低。 除去烯烃，二烯烃，苯乙烯，含氧有机化合物，含硫化合物，含氮化合物和低聚物。
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公开(公告)号：US06753452B2
公开(公告)日：2004-06-22
申请号：US10375784
申请日：2003-02-27
申请人： Chaya R. Venkat , Yun-Yang Huang , Thomas Francis Degnan, Jr. , John P. McWilliams , Ronald A. Weiss
发明人： Chaya R. Venkat , Yun-Yang Huang , Thomas Francis Degnan, Jr. , John P. McWilliams , Ronald A. Weiss
IPC分类号： C07C266
CPC分类号： C07C15/02 , C07C7/13 , C07C2529/70 , C07C15/00
摘要： A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130° C. with an adsorbent selective for the adsorption of said polar compounds and comprising a molecular sieve having surface cavities with cross-sectional dimensions greater than 5.6 Angstroms. A treated feedstock substantially free of said polar compounds can then be fed to an alkylation zone for contact under liquid phase alkylation conditions with an alkylating agent in the presence of an alkylation catalyst.
摘要翻译： 描述了从含有极性化合物的芳族原料中除去极性化合物的方法。 该方法包括使原料在小于或等于130℃的吸附区中与选择性吸附所述极性化合物的吸附剂接触，并且包含具有横截面尺寸大于5.6的表面空腔的分子筛 埃 然后可以在烷基化催化剂存在下，将烷基化剂在液相烷基化条件下进料至基本不含所述极性化合物的处理过的原料。
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公开(公告)号：US06617482B1
公开(公告)日：2003-09-09
申请号：US09639555
申请日：2000-08-16
申请人： Chaya Rao Venkat , Yun-Yang Huang , Thomas Francis Degnan, Jr. , John Paul McWilliams , Ronald A. Weiss
发明人： Chaya Rao Venkat , Yun-Yang Huang , Thomas Francis Degnan, Jr. , John Paul McWilliams , Ronald A. Weiss
IPC分类号： C07C266
CPC分类号： C07C15/02 , C07C7/13 , C07C2529/70 , C07C15/00
摘要： A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds and which is then used in an alkylation process. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130° C. with an adsorbent selective for the adsorption of said polar compounds and comprising a molecular sieve having pores and/or surface cavities with cross-sectional dimensions greater than 5.6 Angstroms. A treated feedstock substantially free of said polar compounds is withdrawn from the adsorption zone and fed to an alkylation zone for contact under liquid phase alkylation conditions with an alkylating agent in the presence of an alkylation catalyst.
摘要翻译： 描述了从含有极性化合物的芳族原料中除去极性化合物的方法，然后将其用于烷基化方法。 该方法包括使原料在小于或等于130℃的吸附区中与选择性吸附所述极性化合物的吸附剂接触，并且包含具有孔和/或表面空腔的分子筛，其横截面 尺寸大于5.6埃。 基本上不含所述极性化合物的经处理的原料从吸附区排出，并在烷基化催化剂存在下，用烷基化剂在液相烷基化条件下进料至烷基化区进行接触。
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公开(公告)号：US5484578A
公开(公告)日：1996-01-16
申请号：US262715
申请日：1994-06-20
CPC分类号： B01D3/008 , B01D3/26 , B01J8/0278
摘要： A distributor system for uniformly directing vapor and liquid across the surface of a fixed bed of solids in a downflow reactor comprising a distributor tray, and a plurality of open-ended downpipes extending through the tray. A first array of the downpipes has a plurality of vertically spaced elevations of holes above the level of the tray. A second array of the downpipes has at least one elevation of holes at substantially the same height above the level of the tray as one of the upper elevations of holes in the first array of the downpipes. But, the second array has no elevation of holes corresponding to the lowermost elevation of holes, and possibly other lower elevations of holes, in the first array of downpipes. The absence of the lowermost holes in the second array of downpipes causes the liquid flow rate through the distributor tray at a given liquid height to be reduced when that liquid height falls below the elevation of the holes second from the bottom in the first array. This maximizes the liquid height above the lowermost holes, preserving good distribution even when the distributor is subject to variations in level from one point to another.
摘要翻译： 一种用于在包括分配器托盘的下流式反应器中的固体固体床的表面上均匀地引导蒸汽和液体的分配器系统以及延伸穿过该托盘的多个开放式开放式管道。 下水管的第一阵列具有在托盘的高度上方的多个垂直间隔的高度的孔。 下水管的第二阵列具有至少一个高度，在塔的水平面上方的基本上相同的高度处，该高度与在第一阵列中的空气管的上部高度之一相同。 但是，第二阵列在第一阵列降水管中没有与孔的最低高度以及可能的其它较低的高度的孔相对应的孔的高度。 在第二阵列的下水管中没有最低的孔导致在给定的液体高度时液体流速通过分配器托盘减小，当该液体高度低于第一阵列中底部的第二孔的高度时。 这使得在最下面的孔之上的液体高度最大化，即使分配器从一个点到另一个点的水平变化也保持良好的分布。
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