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公开(公告)号：US5922923A
公开(公告)日：1999-07-13
申请号：US723208
申请日：1996-09-27
IPC分类号： C10G35/095 , C10G61/06 , C07C15/00 , C07C2/52 , C10G35/04
CPC分类号： C10G61/06 , C10G35/095
摘要： The feedstock to an aromatization process is processed by a selective adsorption step to remove hydrocarbon species, particularly indan, which have a severe adverse effect on aromatization catalyst stability. The feedstock preferably is a paraffinic raffinate from aromatics extraction. The intermediate from the adsorption step is particularly suitable for the selective conversion of paraffins to aromatics using a high-activity dehydrocyclization catalyst with high aromatics yields and long catalyst life.
摘要翻译： 通过选择性吸附步骤处理芳构化方法的原料以除去对芳构化催化剂稳定性具有严重不利影响的烃类，特别是茚满。 原料优选是来自芳烃萃取的链烷烃提余液。 来自吸附步骤的中间体特别适用于使用高芳族化合物产率和较长催化剂寿命的高活性脱氢环化催化剂将石蜡选择性转化为芳族化合物。
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公开(公告)号：US5935415A
公开(公告)日：1999-08-10
申请号：US963693
申请日：1997-11-04
摘要： A hydrocarbon feedstock is catalytically reformed in a sequence comprising a continuous-reforming zone, consisting essentially of a moving-bed catalytic reforming zone and continuous regeneration of catalyst particles, and a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic zeolite. The process combination permits higher severity, higher aromatics yields and/or increased throughput in the continuous-reforming zone, thus showing surprising benefits over prior-art processes, and is particularly useful in upgrading existing moving-bed reforming facilities with continuous catalyst regeneration.
摘要翻译： 烃原料以包含连续重整区的顺序进行催化重整，所述连续重整区主要由移动床催化重整区和催化剂颗粒的连续再生组成，以及沸石重整区，其含有包含铂族金属和 非酸性沸石。 该方法组合允许在连续重整区域中更高的苛刻度，更高的芳族化合物产率和/或增加的通量，因此显示出比现有技术方法更令人惊奇的益处，并且特别适用于在连续催化剂再生的现有移动床重整设备的升级中。
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公开(公告)号：US5683573A
公开(公告)日：1997-11-04
申请号：US635857
申请日：1996-04-22
IPC分类号： C10G47/14 , C10G35/06 , C10G35/095 , C10G49/08 , C10G59/02
CPC分类号： C10G59/02 , C10G35/06 , C10G35/095
摘要： A hydrocarbon feedstock is catalytically reformed in a sequence comprising a continuous-reforming zone, consisting essentially of a moving-bed catalytic reforming zone and continuous regeneration of catalyst particles, and a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic zeolite. The process combination permits higher severity, higher aromatics yields and/or increased throughput in the continuous-reforming zone, thus showing surprising benefits over prior-art processes, and is particularly useful in upgrading existing moving-bed reforming facilities with continuous catalyst regeneration.
摘要翻译： 烃原料以包含连续重整区的顺序进行催化重整，所述连续重整区主要由移动床催化重整区和催化剂颗粒的连续再生组成，以及沸石重整区，其含有包含铂族金属和 非酸性沸石。 该方法组合允许在连续重整区域中更高的苛刻度，更高的芳族化合物产率和/或增加的通量，因此显示出比现有技术方法更令人惊奇的益处，并且特别适用于在连续催化剂再生的现有移动床重整设备的升级中。
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公开(公告)号：US4575434A
公开(公告)日：1986-03-11
申请号：US656083
申请日：1984-09-28
IPC分类号： C07C255/02 , C07C67/00 , C07C253/00 , C07C253/34 , C07C255/06 , C07C120/08 , C07C121/16
CPC分类号： C07C253/34
摘要： A process for the removal of impurities comprising amides from a solution comprising nitriles and the impurities. A reaction mixture is formed which includes the solution, a layered mineral comprising aluminum silicates having exchangeable alkaline or alkaline earth cations on the surfaces of the layers and an acid which has an acid strength sufficient to protonate the amides at amide protonation conditions, but in which the solubility of the salt of the acid and exchangeable cation at those conditions is such that the equilibrium of the protonation reaction is substantially in the direction of the amides remaining in a protonated form. The water content of the reaction mixture must be less than about 0.5 wt. % for substantially all of the reaction time. The reaction mixture is maintained for a sufficient time at the amide protonation conditions for protonation of the amides and exchange of the protonated amides and exchangeable cations to occur, the protonated amides adhering to the surfaces of the layers. Nitriles having a reduced content of impurities may then be separated from the reaction mixture. Effective means of separation are rotating drum vacuum filters, preferably two in series.
摘要翻译： 从包含腈和杂质的溶液中除去包含酰胺的杂质的方法。 形成反应混合物，其包括溶液，包含在层的表面上具有可交换的碱土金属或碱土金属阳离子的硅酸铝的层状矿物和具有足以在酰胺质子化条件下质子化酰胺的酸强度的酸，但其中 在这些条件下，酸和可交换阳离子的盐的溶解度使得质子化反应的平衡基本上在以质子化形式保留的酰胺的方向上。 反应混合物的水含量必须小于约0.5wt。 ％用于基本上所有的反应时间。 在酰胺质子化条件下将反应混合物保持足够的时间，以使酰胺质子化，并质子化的酰胺和可交换的阳离子交换发生，质子化的酰胺附着在层的表面上。 然后可以将具有降低的杂质含量的腈与反应混合物分离。 有效的分离方式是旋转鼓式真空过滤器，优选两个串联。
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公开(公告)号：US06514904B1
公开(公告)日：2003-02-04
申请号：US10154059
申请日：2002-05-22
IPC分类号： B01J2300
CPC分类号： B01J21/04 , B01J23/40 , B01J23/62 , B01J23/63 , B01J35/002 , B01J35/0026 , B01J35/1019 , B01J37/08 , C10G35/09
摘要： A catalyst and a process for using the catalyst are disclosed generally for the conversion of hydrocarbons. By the use of at least one high temperature calcination under dry conditions, a catalyst with a beneficial combination of lowered surface area and excellent piece crush is created. X-ray diffraction pattern information is used to distinguish the resulting product.
摘要翻译： 通常用于转化烃的催化剂和使用该催化剂的方法。 通过在干燥条件下使用至少一次高温煅烧，产生具有降低的表面积和优异的碎片粉碎的有益组合的催化剂。 使用X射线衍射图案信息来区分所得到的产品。
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公开(公告)号：US4746368A
公开(公告)日：1988-05-24
申请号：US834941
申请日：1986-02-28
CPC分类号： C13B20/126
摘要： The invention is a process for the removal of impurities comprising phenolics, dextrans or amino nitrogen from an aqueous saccharide solution. The solution is contacted with a sorbent, which itself is also an embodiment of the invention, comprising a cationic nitrogenous surfactant, the molecules of which contain at least one alkyl group of at least 8 carbon atoms, deposited on the surface of a microporous hydrophobic polymeric support. The deposition is accomplished by contacting a solution of the surfactant in an appropriate solvent with the support. The impurities are adsorbed onto the sorbent and the aqueous saccharide solution is removed from contact with the sorbent. The solvent must be completely miscible with the saccharide solution and the solution of the surfactant in the solvent must have a maximum sorbent wetting rate of at least 100 g/m.sup.2.min., and a sorbent bed retention of at least 140%, based on the bed interstitial volume. The partitioning coefficient of the impurities in the surfactant and solvent deposited on the support, as compared to in water, must be at least 20.
摘要翻译： 本发明是从糖水溶液中除去包含酚类，葡聚糖或氨基氮的杂质的方法。 该溶液与吸附剂接触，吸附剂本身也是本发明的一个实施方案，其包含阳离子含氮表面活性剂，其分子含有至少一个至少8个碳原子的烷基，沉积在微孔疏水聚合物 支持。 通过将表面活性剂的溶液与适当的溶剂与载体接触来实现沉积。 杂质被吸附到吸附剂上，并且水性糖溶液被除去与吸附剂接触。 溶剂必须与糖溶液完全混溶，并且表面活性剂在溶剂中的溶液必须具有至少100g / m 2。min的最大吸附剂润湿速率，并且吸附剂床保留率至少为140％，基于 床间隙体积。 与水相比，沉积在载体上的表面活性剂和溶剂中的杂质的分配系数必须至少为20。
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公开(公告)号：US06503866B1
公开(公告)日：2003-01-07
申请号：US09754677
申请日：2001-01-04
IPC分类号： B01J2356
CPC分类号： C10G35/09 , B01J21/04 , B01J23/40 , B01J23/62 , B01J23/63 , B01J35/002 , B01J35/1019 , B01J37/08
摘要： A process for preparing a catalyst, the catalyst itself, and a process for using the catalyst are disclosed generally for the conversion of hydrocarbons. By the use of at least one high temperature calcination under substantially dry conditions, a catalyst with a beneficial combination of lowered surface area and excellent piece crush is created. X-ray diffraction pattern information is used to distinguish the resulting product.
摘要翻译： 通常用于制备催化剂的方法，催化剂本身以及使用该催化剂的方法用于烃的转化。 通过在基本上干燥的条件下使用至少一种高温煅烧，产生具有降低的表面积和优异的碎片粉碎的有利组合的催化剂。 使用X射线衍射图案信息来区分所得到的产品。
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公开(公告)号：US5658453A
公开(公告)日：1997-08-19
申请号：US453604
申请日：1995-05-30
申请人： Michael B. Russ , Aaron P. Kelly , John Y. G. Park
发明人： Michael B. Russ , Aaron P. Kelly , John Y. G. Park
摘要： A process combination is disclosed to selectively upgrade naphtha in a manner to obtain an aromatics-rich, low-olefin product from the combination. Preferably the naphtha is subjected to aromatization to obtain an aromatics concentrate which is upgraded by hydrogenation of olefins in the aromatics-rich stream. Olefin saturation is effected following separation of the major portion of hydrogen from the aromatics concentrate and before fractionation/stabilization for removal of light ends, with concomitant low saturation of aromatics and with removal of light ends in a fractionator which would be associated with the aromatization in any case.
摘要翻译： 公开了一种方法组合以选择性地升级石脑油，以从组合获得富含芳烃的低烯烃产物。 优选地，将石脑油进行芳构化以获得芳族化合物浓缩物，其通过在富含芳烃的流中的烯烃的氢化而提高。 在将主要部分的氢气与芳族化合物浓缩物分离并且在分馏/稳定化以除去轻馏分之前进行烯烃饱和，伴随着芳族化合物的低饱和度，并且在分馏塔中除去将与芳构化相关的轻馏分 任何情况。
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