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1. 发明授权

US07199068B2 Reactive distillation alkylation process including in situ catalyst regeneration 失效
标题翻译：反应蒸馏烷基化方法，包括原位催化剂再生
公开(公告)号：US07199068B2
公开(公告)日：2007-04-03
申请号：US10090859
申请日：2002-03-05
申请人： J. Barry Winder , Donald L. Wharry , John R. Schell , Mary J. Brown , Joy L. Murray , Richard C. Howe , Wayne L. Sorensen , Daniel P. Szura , Frank Gates
发明人： J. Barry Winder , Donald L. Wharry , John R. Schell , Mary J. Brown , Joy L. Murray , Richard C. Howe , Wayne L. Sorensen , Daniel P. Szura , Frank Gates
IPC分类号： B01J20/34
CPC分类号： B01J29/90 , B01D3/009 , C07C2/66 , Y02P20/127 , Y02P20/584
摘要： A unified process which couples a unique in situ catalyst regeneration process with a continuous reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene with C2–C30 olefins using a solid acid alkylation catalyst supported in the reflux zone of a distillation column. Periodic regeneration of the catalyst is carried out with a countercurrent injection of a C4–C16 paraffin below the benzene rectification zone at the top of the column, but above the catalyst zone while the aromatic hydrocarbon reaction feedstock is injected continuously at a point above a rectification zone at the base of the column where the aromatic compound is separated from the paraffin and by-products washed from the catalyst. The use of the C4–C16 paraffin with the aromatic at a mole fraction in the range of 40 to 90% enables a regeneration temperature of about 175–250° C. to be achieved and maintained by adjusting the column pressure and aromatic reflux rate. Significantly lower pressures, on the order of 125 to 370 psig, are required to achieve regeneration temperature than would be otherwise required with the use only of the aromatic hydrocarbon to dilute and wash the by-products from the catalyst surfaces.
摘要翻译：将独特的原位催化剂再生过程与压力下的连续反应蒸馏相结合的轻质芳族烃如C 2 -C 30烯烃的烷基化的统一方法使用负载在蒸馏塔的回流区中的固体酸烷基化催化剂。催化剂的定期再生是通过在塔顶部但在催化剂上方的苯精馏区的逆流注入下方的C 4 -C 16 - 区域，而芳族烃反应原料在芳族化合物与石蜡分离的塔底部的精馏区上方的点处连续注入，并从催化剂洗涤副产物。使用C 4-14 -C 16石蜡与摩尔分数在40至90％范围内的芳族化合物使再生温度为约175-250℃ 通过调节柱压和芳烃回流速率来实现和维持。需要显着降低约125至370psig的压力以实现再生温度，而不是仅使用芳烃从催化剂表面稀释和洗涤副产物所需的压力。

2. 发明授权

US06642425B2 Reactive distillation process for the alkylation of aromatic hydrocarbons 失效
标题翻译：用于烷基化芳烃的反应蒸馏方法
公开(公告)号：US06642425B2
公开(公告)日：2003-11-04
申请号：US10091199
申请日：2002-03-05
申请人： J. Barry Winder , Donald L. Wharry , John R. Schell , Mary J. Brown , Joy L. Murray , Richard C. Howe , Wayne L. Sorensen , Daniel P. Szura
发明人： J. Barry Winder , Donald L. Wharry , John R. Schell , Mary J. Brown , Joy L. Murray , Richard C. Howe , Wayne L. Sorensen , Daniel P. Szura
IPC分类号： C07C15067
CPC分类号： C07C2/66 , Y02P20/127
摘要： A unified process for reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene and cumene with straight chain C6-C18 olefins using a solid acid alkylation catalyst supported in the reflux zone of the distillation column. The process is continuous, using a reactive distillation configuration such that at least a portion of the olefin is injected below the benzene rectification zone at the top of the column. The aromatic hydrocarbon is injected continuously at a low rate above the rectification zone at the base of the column and above the reboiler. The alkylation reaction takes place primarily in the liquid phase on the solid acid catalyst and is characterized in that the molar ratio of aromatic hydrocarbon to olefin in the liquid phase may be adjusted. The molar ratio is adjustable up to about 100/1, through adjustment of the internal column operating pressure, the benzene reflux rate, the amount of benzene removed from the reflux condenser to storage or from the reboiler with the distillation column operated at or near total aromatic hydrocarbon reflux. The unexpectedly high liquid phase aromatic hydrocarbon to olefin molar ratios achieved in the reactive distillation column increases the selectivity to mono-alkylated aromatics and helps stabilize catalyst lifetime.
摘要翻译：在压力下进行反应蒸馏的统一方法是使用负载在蒸馏塔的回流区中的固体烷基化催化剂烷基化轻质芳烃如苯和枯烯与直链C 6 -C 18烯烃。该方法是连续的，使用反应蒸馏构型使得至少一部分烯烃被注入塔顶部的苯精馏区下方。芳族烃在柱的底部和再沸器上方的精馏区上方的低速率连续注入。烷基化反应主要发生在固相酸催化剂上的液相中，其特征在于可调节芳族烃与烯烃在液相中的摩尔比。通过调整内部柱的工作压力，苯回流速率，从回流冷凝器到储存器或从蒸馏塔中回收的蒸馏塔中除去的苯的量可调整到约100/1的摩尔比可以达到约100/1 芳烃回流。在反应蒸馏塔中实现的意想不到的高液相芳烃与烯烃的摩尔比提高了对单烷基化芳族化合物的选择性，有助于稳定催化剂的使用寿命。

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