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公开(公告)号：US5399258A
公开(公告)日：1995-03-21
申请号：US988492
申请日：1992-12-10
申请人： David L. Fletcher , Michael S. Sarli , Stuart S. Shih , Stephen J. McGovern , Douglas S. Diez , Mohsen N. Harandi , Timothy L. Hilbert
发明人： David L. Fletcher , Michael S. Sarli , Stuart S. Shih , Stephen J. McGovern , Douglas S. Diez , Mohsen N. Harandi , Timothy L. Hilbert
CPC分类号： C10G35/095 , C10G53/16 , C10G67/00 , C10G67/16 , C10G69/08 , C10G2300/70
摘要： Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst under endothermic conditions in a second reaction zone. Heat is added to the endothermic reaction zone to initiate and maintain octane restoring reactions. The preferred acidic catalyst is an intermediate pore size zeolite such as ZSM-5. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. The addition of heat at the second zone prolongs hydrodesulfurization catalyst life by allowing a lower hydrodesulfurization reactor temperature. The addition of heat also maximizes octane increase in the second zone.
摘要翻译： 相对高辛烷值的低硫汽油由催化裂化的含硫石脑油通过加氢脱硫然后在酸性催化剂上在吸热条件下在第二反应区中进行处理。 将热量加入到吸热反应区中以引发和维持辛烷恢复反应。 优选的酸性催化剂是中等孔径沸石，例如ZSM-5。 在第二步骤中对酸性催化剂的处理恢复了由于氢化处理而发生的辛烷值损失，并导致具有与进料石脑油相当的辛烷值的低硫汽油产物。 通过允许较低的加氢脱硫反应器温度，在第二区域的加热延长了加氢脱硫催化剂寿命。 加热也使第二区域的辛烷值增加最大化。
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公开(公告)号：US5348707A
公开(公告)日：1994-09-20
申请号：US644141
申请日：1991-01-22
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
摘要： A multistage catalytic reactor system for preparing ethers such as methyl t-butyl (MTBE) and t-amyl methyl ether (TAME) from iso-olefin and methanol, comprising a first reactor for contacting the iso-olefin and alcohol with a solid regenerable catalyst, such as medium-pore zeolite conversion catalyst for partial conversion of the iso-olefin and methanol to an unsymmetrical ether, operatively connected for feeding effluent from the first reactor to a second etherification reaction zone containing sensitive catalyst, such as macroreticular polystyrenesulfonic acid resin. In a preferred embodiment, the second reaction zone comprises an inlet means for receiving withdrawn intermediate product, a catalytic distillation column containing solid acid resin etherification catalyst in a plurality of fixed bed catalysis-distillation zones, and outlet means for withdrawing a final etherification product.
摘要翻译： 一种用于从异烯烃和甲醇制备醚如甲基叔丁基（MTBE）和叔戊基甲基醚（TAME）的多级催化反应器系统，包括用于使异烯烃和醇与固体可再生催化剂接触的第一反应器 ，例如用于将异烯烃和甲醇部分转化成不对称醚的中孔沸石转化催化剂，其可操作地连接用于将来自第一反应器的流出物供给到包含敏感催化剂的大孔聚苯乙烯磺酸树脂的第二醚化反应区。 在优选的实施方案中，第二反应区包括用于接收取出的中间产物的入口装置，在多个固定床催化蒸馏区中含有固体酸树脂醚化催化剂的催化蒸馏塔和用于取出最终醚化产物的出口装置。
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公开(公告)号：US5338436A
公开(公告)日：1994-08-16
申请号：US73267
申请日：1993-06-08
申请人： Mohsen N. Harandi
发明人： Mohsen N. Harandi
CPC分类号： C10G69/123
摘要： There is provided a process for dewaxing a hydrocarbon feedstock, wherein the effluent from a dewaxing reaction zone is passed over an oligomerization catalyst under conditions sufficient to oligomerize olefins in this effluent. The temperature of the oligomerization reaction is less than the temperature of the dewaxing reaction.
摘要翻译： 提供了一种用于使烃原料脱蜡的方法，其中来自脱蜡反应区的流出物在足以使该流出物中的烯烃低聚的条件下通过低聚催化剂。 低聚反应的温度低于脱蜡反应的温度。
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公开(公告)号：USRE34189E
公开(公告)日：1993-03-02
申请号：US645421
申请日：1991-01-11
申请人： Mohsen N. Harandi
发明人： Mohsen N. Harandi
CPC分类号： C10G50/00 , C07C2/00 , C07C2529/40
摘要： An improved two-step process for the conversion of lower molecular weight paraffins, the process comprising contacting in a first step a C.sub.2 -C.sub.10 alkane-rich feedstock with a siliceous zeolite catalyst in a primary fluidized bed reaction zone under high temperature dehydrogenation conditions to obtain an intermediate product comprising oligomerizble olefinic hydrocarbons and aromatics; and then contacting in a second step the intermediate product with a siliceous zeolite catalyst in a secondary fluidized bed reaction zone under low temperature oligomerization conditions to obtain a final product comprising gasoline boiling range aliphatic and aromatic hydrocarbons.
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15.发明授权Upgrading C4 mixed hydrocarbons by transhydrogenation and isobutene etherification 失效通过转氢和异丁烯醚化来升级C4混合烃
公开(公告)号：US5176719A
公开(公告)日：1993-01-05
申请号：US614479
申请日：1990-11-16
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
摘要： A technique for converting olefinic light hydrocarbons rich in butenes and butanes to ether-rich liquid fuels including etherification and transhydrogenation operations. The preferred process includes: reacting a mixed C4 hydrocarbon stream containing isobutene and n-butenes with lower aliphatic alcohol in an etherification zone in contact with an acidic etherification catalyst under etherification conditions whereby an effluent stream containing C5+ tertiary-alkyl ether is produced; separating the etherification effluent stream to provide a liquid stream comprising C5+ ether and an olefinic stream comprising unreacted C4 hydrocarbons; contacting at least the n-butenes from the C.sub.4 olefinic hydrocarbon stream with isobutane under transhydrogenation conditions in the presence of transhydrogenation catalyst whereby isobutane is converted to isobutene; separating transhydrogenation effluent to recover a C4 olefinic intermediate stream containing isobutene; and passing at least a portion of the isobutene-containing intermediate stream to the etherification zone for conversion to tertiary-alkyl ether.
摘要翻译： 将富含丁烯和丁烷的烯烃轻质烃转化为富含醚的液体燃料的技术，包括醚化和转氢操作。 优选的方法包括：在醚化条件下使含有异丁烯和正丁烯的混合C 4烃流与醚化区中的酸性醚化催化剂接触的低级脂族醇反应，从而产生含有C5 +叔烷基醚的流出物流; 分离醚化流出物流以提供包含C5 +醚和包含未反应的C 4烃的烯烃流的液体流; 在转氢催化剂的存在下，在转氢氢化条件下，使来自C4烯烃的至少一种烃与异丁烷接触，由此将异丁烷转化为异丁烯; 分离反氢化流出液以回收含有异丁烯的C 4烯烃中间体流; 并将至少一部分含异丁烯的中间物流送至醚化区转化为叔烷基醚。
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公开(公告)号：US5144085A
公开(公告)日：1992-09-01
申请号：US500356
申请日：1990-03-28
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
CPC分类号： C07C41/06 , Y02P20/582
摘要： Improved process techniques and equipment for reacting crude aqueous ethanol feedstock with iso-olefinic hydrocarbons to produce C.sub.6.sup.+ ethyl t-alkyl ethers, which comprises: distilling the aqueous ethanol feedstock; contacting ethanol rich distillate overhead containing a minor amount of water with a liquid hydrocarbon extractant rich in C.sub.4.sup.+ isoalkene under liquid extraction conditions; recovering an aqueous phase containing water introduced from the overhead; recovering an organic extract phase comprising the hydrocarbon extractant and a major amount of ethanol introduced in the feedstock; and reacting the extracted ethanol and C.sub.4.sup.+ isoalkene in contact with an acid etherification catalyst under catalytic reaction conditions to produce ether product.
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公开(公告)号：US5041690A
公开(公告)日：1991-08-20
申请号：US563731
申请日：1990-08-03
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
CPC分类号： C10G3/49 , C07C41/01 , C07C41/06 , C10L1/023 , C10G2400/02 , C10G2400/20 , Y02P20/125 , Y02P30/20
摘要： Methanol or other alcohol is converted to high octane gasoline components by an integrated process wherein crude aqueous alcohol feedstock is extracted with a liquid extractant stream containing C.sub.4 +iso-olefin and reacted to form tertiary-alkyl ethers, such as MTBE. The aqueous raffinate is converted to olefinic hydrocarbons in a MTO catalytic reactor. Propene from the MTO reaction is reacted with water to produce di-isopropyl ether, which may be blended with MTBE and C.sub.6 +MTO hydrocarbons to produce high octane gasoline. Isobutylene and isoamylenes from the MTO reaction can be recovered and recycled as a liquid extractant stream.
摘要翻译： 通过一体化方法将甲醇或其它醇转化成高辛烷值的汽油成分，其中用含有C4 +异烯烃的液体萃取剂流提取粗制的含水醇原料，并反应形成叔烷基醚，如MTBE。 在MTO催化反应器中将含水残液转化为烯烃。 与MTO反应的丙烯与水反应产生二异丙醚，可与MTBE和C6 + MTO烃混合生产高辛烷值汽油。 来自MTO反应的异丁烯和异戊烯可以作为液体萃取剂流回收和再循环。
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公开(公告)号：US4994168A
公开(公告)日：1991-02-19
申请号：US260637
申请日：1988-10-21
申请人： Mohsen N. Harandi
发明人： Mohsen N. Harandi
CPC分类号： C10G65/043 , C10G7/00
摘要： The quality and yield of dewaxed, hydrotreated lube oil base stocks are improved by reducing the top temperature in the hydrotreated lube stripper so as to increase the proportion of heavy kerosene components in the lube oil base stock. The separation system provides for a two stage stripping of the lube oil fraction such that the kerosene fraction stripped from the lube product in the primary product stripper under vacuum is stripped in a second stage stripper at a higher pressure with recycle of the heavy kerosene fraction as a reflux stream to the primary vacuum stripper so that a product with improved viscosity index and flash point is separated in the primary stripper.
摘要翻译： 通过降低加氢处理的润滑油汽提塔中的顶部温度，提高脱蜡，加氢处理的润滑油基础油的质量和产率，以增加润滑油基础油中重质煤油组分的比例。 分离系统提供润滑油馏分的两阶段汽提，使得在真空下从主产物汽提器中的润滑剂产物中汽提的煤油馏分在较高压力下在第二阶段汽提器中汽提，重质煤油馏分循环如 回流到初级真空汽提器，使得具有改善的粘度指数和闪点的产品在主汽提器中分离。
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公开(公告)号：US4981574A
公开(公告)日：1991-01-01
申请号：US322880
申请日：1989-03-14
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
IPC分类号： C10G45/64
CPC分类号： C10G45/64
摘要： A process is disclosed for dewaxing a waxy hydrocarbon feedstock and for upgrading the olefinic interstage by-product to a high-octane gasoline blending stream. Waxy hydrocarbon feedstock is catalytically dewaxed until the catalyst is deactivated. Hydrogen-rich gas or, optionally, oxygen-containing gas, is then circulated to at least partially reactivate the catalyst. The interstage by-product, stored during the dewaxing run, is then upgraded in the reaction zone to a high-octane gasoline blending component.
摘要翻译： 公开了一种用于将蜡质烃原料脱蜡并将烯烃级副产物升级为高辛烷值汽油混合物流的方法。 将蜡质烃原料催化脱蜡，直到催化剂失活。 然后将富氢气体或任选的含氧气体循环至少部分地使催化剂再活化。 然后在脱蜡运行期间储存的级间副产物在反应区中升级成高辛烷值汽油调和组分。
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公开(公告)号：US4975179A
公开(公告)日：1990-12-04
申请号：US399181
申请日：1989-08-24
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
摘要： A process is disclosed for the production of high octane gasoline rich in aromatics but containing a relatively low concentration of benzene. The process comprises the separation of C.sub.6 fraction of the gasoline feedstock into n-hexane and C.sub.6 isomers. The n-hexane and C.sub.7 + streams are catalytically reformed to produce a reformate with a diminished yield of benzene. The reformate is separated and the C.sub.6 - reformate fraction containing benzene is alkylated employing acidic metallosilicate catalyst such as ZSM-5 as the catalyst and preferably methano or propylene as the alkylating agent. The alkylate comprises C.sub.7+ alkylaromatics. The C.sub.6 isomers are blended into the gasoline pool.
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