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公开(公告)号：US06982234B2
公开(公告)日：2006-01-03
申请号：US10309808
申请日：2002-12-05
CPC分类号： C07C51/313 , C07C51/47 , C07C55/14
摘要： Methods and apparatus for removing a catalyst from a reaction mixture formed by reacting a hydrocarbon or an oxygenated hydrocarbon with an oxidant in the presence of the catalyst in a reactor, in which the reaction mixture contains one or more dibasic acids. The catalyst is removed by adding water and/or cooling the reaction mixture to cause phase separation, recycling the polar phase to the reactor, and transferring the less-polar phase to an ion exchange unit to remove catalyst contained therein.
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公开(公告)号：US06551502B1
公开(公告)日：2003-04-22
申请号：US09686889
申请日：2000-10-12
IPC分类号： C10G4500
摘要： A process for the removal of sulfur compounds from a hydrocarbon stream is disclosed. In a preferred embodiment, the process includes extractive distillation of a gasoline stream from a fluid catalytic cracker to reject olefins to a raffinate stream and simultaneously extract sulfur compounds to an extract stream.
摘要翻译： 公开了从烃流中除去硫化合物的方法。 在优选的实施方案中，该方法包括从流化催化裂化器萃取蒸馏汽油流以将烯烃排斥到萃余液流中并同时将硫化合物萃取到萃取物流中。
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53.发明授权Method of retrofitting existing equipment for an improved aromatics separation process 有权改进现有设备以改进芳烃分离过程的方法公开(公告)号：US06375802B1
公开(公告)日：2002-04-23
申请号：US09553697
申请日：2000-04-20
申请人： Joseph C. Gentry , Fu-Ming Lee
发明人： Joseph C. Gentry , Fu-Ming Lee
IPC分类号： B01D1100
摘要： An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of recovering aromatic compounds via parallel operation of a hybrid extractive distillation/liquid-liquid extractor operation and variations thereof. Methods of quickly and economically retrofitting existing recovery process equipment for use with the improved aromatics recovery process are also disclosed.
摘要翻译： 提供了一种用于从含有芳族和非芳香族化合物的混合物中回收芳族化合物的改进方法以及用于改造现有设备的方法。 改进的方法包括通过混合萃取蒸馏/液 - 液萃取器操作及其变化的并行操作来回收芳族化合物的步骤。 还公开了快速和经济地改造用于改进的芳烃回收方法的现有回收工艺设备的方法。
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公开(公告)号：US6140534A
公开(公告)日：2000-10-31
申请号：US229789
申请日：1999-01-13
CPC分类号： C07C51/43
摘要： Disclosed is a method for preparing isophthalic acid from metaxylene and especially for purifying crude isophthalic acid (IPA) produced in the course of such method, or otherwise, from a liquid dispersion thereof also containing impurities selected from unreacted starting materials, solvents, products of side reactions and/or other undesired materials. The purifying portion of the method comprises the step of: (1) filtering the dispersion to form a crude IPA filter cake; (2) dissolving the filter cake in a selective crystallization solvent at an elevated temperature to form a solution; (3) crystallizing purified IPA from the solution in the crystallization solvent by reducing the temperature, or pressure, or both of the solution; (4) separating the crystallized purified IPA from the solution; and (5) re-dissolving or soaking the washed purified IPA cake at elevated temperature, to remove the final traces of the crystallization solvent and obtain the desirable particle sizes and shape. Preferably, the selective crystallization solvent is N-methyl pyrrolidone.
摘要翻译： 本发明公开了一种从间二苯衍生的间苯二甲酸的方法，特别是用于纯化在该方法中生产的间苯二甲酸（IPA）的方法，或以其它方式从其还含有选自未反应的起始原料，溶剂，副产物的杂质的液体分散体 反应和/或其他不期望的物质。 该方法的净化部分包括以下步骤：（1）过滤分散体以形成粗的IPA滤饼; （2）在升高的温度下将滤饼溶解在选择性结晶溶剂中以形成溶液; （3）通过降低温度或压力或溶液两者从结晶溶剂中的溶液中结晶纯化的IPA; （4）从溶液中分离结晶的纯化的IPA; 和（5）在升高的温度下重新溶解或浸泡洗涤的纯化的IPA饼，以除去结晶溶剂的最终痕迹并获得所需的粒度和形状。 优选地，选择性结晶溶剂是N-甲基吡咯烷酮。
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公开(公告)号：US6005157A
公开(公告)日：1999-12-21
申请号：US75903
申请日：1998-05-11
摘要： Disclosed is a process for separating at least one cycloalkane containing 5-10 carbon atoms per molecule from at least one close-boiling alkane by extractive distillation of a feed consisting essentially of said at least one cycloalkane and said at least one alkane, the improvement comprising the use of certain pyrrolidones, certain morpholines, sulfoxides, sulfolanes, glycol compounds, or mixtures thereof, and optionally water; wherein said extractive distillation process produces (i) an overhead distillate product which contains a smaller volume percentage of said at least one cycloalkane and a larger volume percentage of said at least one alkane than said feed, and (ii) a bottoms product which contains said solvent and a larger volume percentage of said at least one cycloalkane and a smaller volume percentage of said at least one alkane than said feed; and wherein said at least one cycloalkane is separated from said solvent and recovered from said bottoms product.
摘要翻译： 公开了一种通过基本上由所述至少一种环烷烃和所述至少一种烷烃组成的进料的萃取蒸馏将至少一种每分子含有5-10个碳原子的至少一个环烷烃从至少一个接近沸点烷烃分离的方法，其改进包括 某些吡咯烷酮，某些吗啉，亚砜，环丁砜，二醇化合物或其混合物，以及任选的水的使用; 其中所述萃取蒸馏方法产生（i）包含所述至少一种环烷烃的体积百分比较小的所述塔烷馏出物产物和比所述进料更大体积百分数的所述至少一种烷烃，和（ii）含有所述至少一种环烷烃的塔底馏分产物， 所述至少一种环烷烃的体积百分比较大且所述至少一种烷烃的体积百分比较小; 并且其中所述至少一种环烷烃与所述溶剂分离并从所述底部产物中回收。
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56.发明授权
公开(公告)号：US5849982A
公开(公告)日：1998-12-15
申请号：US967185
申请日：1997-10-29
IPC分类号： C07C5/367 , B01D3/32 , C07C7/00 , C07C7/08 , C07C7/10 , C07C15/40 , C07C15/46 , C10G7/08 , B01D3/40 , C07C7/17
摘要： An extractive distillation process for separating at least one substituted unsaturated aromatic from a pyrolysis gasoline mixture, containing said aromatic and at least one close-boiling aromatic or non-aromatic hydrocarbon, employing a two part extractive solvent, the first part selected from propylene carbonate, sulfolane (tetramethylene sulfone), methyl carbitol, 1-methyl-2-pyrrolidinone, 2-pyrrolidinone and mixtures thereof, and the second portion consisting of water.
摘要翻译： 一种萃取蒸馏方法，用于使用两部分萃取溶剂从含有所述芳族和至少一种接近沸点的芳族或非芳族烃的裂解汽油混合物中分离至少一种取代的不饱和芳族化合物，所述第一部分选自碳酸亚丙酯， 环丁砜（四亚甲基砜），甲基卡必醇，1-甲基-2-吡咯烷酮，2-吡咯烷酮及其混合物，第二部分由水组成。
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公开(公告)号：US5840968A
公开(公告)日：1998-11-24
申请号：US962030
申请日：1997-10-31
申请人： Fu-Ming Lee , Wiston Lamshing
发明人： Fu-Ming Lee , Wiston Lamshing
CPC分类号： C07C51/43
摘要： A method and apparatus for purifying crude terephthalic acid from a liquid dispersion thereof also containing impurities selected from unreacted starting materials, solvents, products of side reactions and/or other undesired materials is provided. The method comprises the steps of filtering the dispersion to form a crude terephthalic acid filter cake, dissolving the filter cake in a selective crystallization solvent at an elevated temperature to form a solution, crystallizing purified terephthalic acid from the solution in the crystallization solvent by reducing the pressure and temperature of the solution, and separating the crystallized purified terephthalic acid from the solution. According to the invention, the selective crystallization solvent is non-aqueous, non-corrosive and essentially non-reactive with terephthalic acid. Preferably, the selective crystallization solvent is N-methyl pyrrolidone or dimethyl acetamide. The method and apparatus produces purified terephthalic acid having a purity desired for use in forming polyester resin and other products at an economically attractive rate and at operating conditions of reduced severity which require a lower capital investment and simplified processing.
摘要翻译： 提供了一种从其液体分散体中纯化粗对苯二甲酸的方法和装置，其还含有选自未反应的起始原料，溶剂，副反应产物和/或其它不需要的物质的杂质。 该方法包括以下步骤：过滤分散体以形成粗对苯二甲酸滤饼，在高温下将滤饼溶解在选择性结晶溶剂中以形成溶液，从结晶溶剂中的溶液中将纯化的对苯二甲酸结晶， 溶液的压力和温度，并从溶液中分离结晶的纯化对苯二甲酸。 根据本发明，选择性结晶溶剂是非水性的，非腐蚀性的并且与对苯二甲酸基本上不反应。 优选地，选择性结晶溶剂是N-甲基吡咯烷酮或二甲基乙酰胺。 该方法和设备产生纯化的对苯二甲酸，其具有希望用于形成聚酯树脂和其它产品的纯度的经纯化的对苯二甲酸酯以经济上有吸引力的速率和苛刻的操作条件，其需要较低的资本投资和简化的加工。
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公开(公告)号：US5100515A
公开(公告)日：1992-03-31
申请号：US604737
申请日：1990-10-26
申请人： Fu-Ming Lee , Ronald E. Brown
发明人： Fu-Ming Lee , Ronald E. Brown
摘要： An extractive distillation process for separatin at least one C.sub.4 -C.sub.10 alkene (monoolefin) from at least one close-boiling alkane employs a solvent mixture of (a) at least one saturated alcohol (preferably cyclohexanol) and either (b1) at least one sulfolane (preferably cyclotetramethylene sulfone) or (b2) at least one glycol compound (preferably tetraethylene glycol) or (b1)+(b2).
摘要翻译： 用于从至少一个接近沸点烷烃分离至少一种C 4 -C 10烯烃（单烯烃）的萃取蒸馏方法采用（a）至少一种饱和醇（优选环己醇）和（b1）至少一种环丁砜的溶剂混合物 （优选环四亚甲基砜）或（b2）至少一种二醇化合物（优选四甘醇）或（b1）+（b2）。
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公开(公告)号：US5032232A
公开(公告)日：1991-07-16
申请号：US606690
申请日：1990-10-31
申请人： Fu-Ming Lee , Ronald E. Brown , Marvin M. Johnson
发明人： Fu-Ming Lee , Ronald E. Brown , Marvin M. Johnson
摘要： Extractive distillation processes for separating aromatic hydrocarbon(s) or cycloalkane(s) or alkene(s) from close-boiling alkane(s) are carried out with a solvent including at least one N-alkyl-2-thiopyrrolidone compound, preferably N-methyl-2-thiopyrrolidone. Optionally, the solvent additionally contains a cosolvent, preferably tetraethylene glycol or N-(.beta.-mercaptoethyl)-2-pyrrolidone or unsubstituted sulfolane.
摘要翻译： 用于从近沸点烷烃分离芳族烃或环烷烃或烯烃的萃取蒸馏方法用包括至少一种N-烷基-2-硫代吡咯烷酮化合物的溶剂进行，优选N- 甲基-2-硫代吡咯烷酮。 任选地，溶剂另外含有共溶剂，优选四甘醇或N-（β-巯基乙基）-2-吡咯烷酮或未取代的环丁砜。
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公开(公告)号：US4559109A
公开(公告)日：1985-12-17
申请号：US480999
申请日：1983-03-31
申请人： Fu-Ming Lee , Robert H. Pahl
发明人： Fu-Ming Lee , Robert H. Pahl
CPC分类号： C07C29/84 , B01D3/40 , Y10S203/14
摘要： A process for producing anhydrous ethanol from an ethanol-water mixture feedstock comprising subjecting the feedstock to distillation in a first distillation zone to produce an overhead vapor of from about 80 to about 90 weight percent ethanol, subjecting the thus produced overhead vapor to extractive distillation in an extractive distillation zone to produce anhydrous ethanol vapor overhead of about 99.5 weight percent ethanol and a solvent-rich bottom stream, and stripping the solvent-rich bottom stream and recycling the thus produced lean solvent bottom stream to the extractive distillation zone and recycling the thus produced overhead vapor stream to the first distillation zone. Also disclosed is a system for performing the process.
摘要翻译： 一种从乙醇 - 水混合物原料生产无水乙醇的方法，包括使原料在第一蒸馏区进行蒸馏以产生约80至约90重量％的乙醇的塔顶蒸气，将如此制得的塔顶蒸气进行萃取蒸馏 萃取蒸馏区产生约99.5重量％的乙醇和富溶剂的塔底物流的无水乙醇蒸气塔顶馏出物，并且汽提富含溶剂的塔底物流，并将由此产生的贫溶剂塔底物流再循环到萃取蒸馏区，从而回收 产生顶部蒸汽流到第一蒸馏区。 还公开了一种用于执行该过程的系统。
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