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公开(公告)号：US20100065469A1
公开(公告)日：2010-03-18
申请号：US12312054
申请日：2007-10-19
CPC分类号： C10G73/34 , G01N25/04 , G01N33/2835
摘要： The determination of wax crystal particle size and population is used to monitor the performance of wax crystallizers used in lubricant oil processing using solvent dewaxing. The wax crystal particle size is monitored using online measurements. The information obtained from on-line monitoring is then used to control crystallization in the dewaxing equipment in order to optimize performance of the dewaxing units.
摘要翻译： 蜡结晶粒度和群体的测定用于监测使用溶剂脱蜡的润滑油处理中使用的蜡结晶器的性能。 使用在线测量来监测蜡晶粒度。 然后使用在线监测获得的信息来控制脱蜡设备中的结晶，以优化脱蜡装置的性能。
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公开(公告)号：US5494566A
公开(公告)日：1996-02-27
申请号：US249610
申请日：1994-05-26
申请人： Ronald M. Gould , Albert R. Nitsch
发明人： Ronald M. Gould , Albert R. Nitsch
摘要： A process for solvent dewaxing petroleum feedstock to separate crystallized wax from lubricant oil by filtration of a wax/oil/solvent mixture. The feedstock is sequentially cooled and mixed with cold polar solvent to form a wax crystal phase and oil-solvent phase, and-the oil-solvent filtrate stream is contacted with solvent permeable selective membrane at low temperature to recover an internal circulating permeate solvent stream and an oil-rich retentate stream containing dewaxed oil product and residual solvent. Improved operation is achieved by splitting the internal circulating solvent stream into a multiple cold solvent recycle streams and injecting a plurality of the cold solvent recycle streams into the waxy petroleum feedstock during sequential cooling and mixing. By initially injecting a cold recycle solvent stream in to the waxy petroleum feedstock at a small temperature differential near the wax crystallization temperature, shock cooling and excess small wax crystal formation is avoided.
摘要翻译： 溶剂脱蜡石油原料以通过过滤蜡/油/溶剂混合物将结晶蜡与润滑油分离的方法。 将原料依次冷却并与冷的极性溶剂混合以形成蜡结晶相和油溶剂相，并将油 - 溶剂滤液物流与溶剂可渗透的选择性膜在低温下接触以回收内循环渗透物溶剂流和 含有脱蜡油产物和残留溶剂的富油滞留物流。 通过在连续冷却和混合期间将内部循环溶剂流分成多个冷溶剂循环流并将多个冷溶剂再循环流注入蜡状石油原料中来实现改进的操作。 通过在靠近蜡结晶温度的温度下以较小的温度差将初始的冷再循环溶剂流注入蜡状石油原料中，避免了冲击冷却和过量的小蜡晶形成。
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3.发明授权
公开(公告)号：US5730858A
公开(公告)日：1998-03-24
申请号：US819933
申请日：1997-03-18
IPC分类号： B01J27/043 , B01J27/047 , B01J29/04 , C10G20060101 , C10G45/64 , C10G47/20 , C10G65/12 , C10G67/04 , C10G67/08 , C10G73/06 , C10G73/12 , C10G73/02
摘要： The wax-containing hydrocarbon feedstocks are pre-treated by contacting them with a homogeneous solution containing 1-5 vol. % of an acid diluted in an alcohol/water mixture (preferably containing 60-90 vol. % alcohol). The pre-treated feedstock is then contacted, in the presence of hydrogen, with at least two catalysts in sequence and with no intermediate separation, comprising at least one hydrodewaxing catalyst and one hydrocracking catalyst, to recover high-grade middle distillates.
摘要翻译： 含蜡的烃原料通过使其与含有1-5vol。的均相溶液接触来预处理。 在醇/水混合物中稀释的酸的百分比（优选含有60-90体积％的醇）。 然后在氢的存在下，将预处理的原料与至少两种催化剂依次接触，不用中间分离，包含至少一种加氢脱蜡催化剂和一种加氢裂化催化剂，以回收高级中间馏分。
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4.发明授权Lubricating oil dewaxing using membrane separation of cold solvent from dewaxed oil 失效润滑油脱蜡使用冷脱溶剂与脱蜡油进行膜分离
公开(公告)号：US5358625A
公开(公告)日：1994-10-25
申请号：US52326
申请日：1993-04-23
申请人： Ronald M. Gould
发明人： Ronald M. Gould
IPC分类号： C10G73/04 , B01D61/02 , B01D61/24 , C10G73/06 , C10G73/10 , C10G73/12 , C10G73/32 , B01D39/00 , C07C7/144
CPC分类号： B01D61/246 , B01D61/02 , C10G73/06 , C10G73/32
摘要： A process for solvent dewaxing a waxy oil feed to produce a lubricating oil by contacting a warm waxy oil feed in counter-current with a cold oil/solvent filtrate stream through a selectively permeable membrane to transfer cold solvent through the membrane to the feed and simultaneously cool the feed, dilute it with solvent and separate solvent from the cold oil/solvent filtrate stream. The cooled, diluted feed stream is then further cooled to precipitate the wax to form an oil/solvent/wax mixture which is further diluted with cold solvent and filtered to remove wax. The cold oil/solvent filtrate stream is cycled to the selectively permeable membrane for the counter-current contact with the warm waxy oil feed and, after removal of a portion of the solvent over the membrane, is sent to an oil/solvent separation operation in which the solvent is removed from the dewaxed oil.
摘要翻译： 将蜡状油进料溶解脱蜡以产生润滑油的方法，该方法是将逆流的温蜡蜡原料与冷油/溶剂滤液流通过选择性渗透膜接触，以将冷溶剂通过膜转移至进料并同时 冷却进料，用溶剂稀释，并从冷油/溶剂滤液流中分离出溶剂。 然后冷却的稀释的进料流进一步冷却以沉淀蜡以形成油/溶剂/蜡混合物，其进一步用冷溶剂稀释并过滤以除去蜡。 将冷油/溶剂滤液流循环到选择性渗透膜上，以与温热的蜡状油进料逆流接触，并且在将一部分溶剂除去膜之后，送入油/溶剂分离操作 溶剂从脱蜡油中除去。
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5.发明授权Solvent dewaxing using combination poly (n-C.sub.24) alkylmethacrylate-poly (C.sub.8 -C.sub.20 alkyl (meth-) acrylate dewaxing aid 失效溶剂脱蜡使用组合聚（n-C24）甲基丙烯酸烷基酯 - 聚（C8-C20烷基（甲基）丙烯酸酯脱蜡助剂
公开(公告)号：US4728414A
公开(公告)日：1988-03-01
申请号：US933126
申请日：1986-11-21
CPC分类号： C10G73/04
摘要： Solvent dewaxing of waxy hydrocarbon oils is improved by using a poly (n-C.sub.24) alkyl methacrylate polymer dewaxing aid in combination with lower melting point weight poly (C.sub.8 -C.sub.20) alkyl methacrylate polymer dewaxing aids. The solvent dewaxing processes improved using this combination dewaxing aid are the incremental and total predilution solvent type processes employing either surface chilled indirect heat exchanger means or direct chilling using cold solvent.The solvent dewaxing processes are those employing normally liquid dewaxing solvents, as exemplified by C.sub.3 -C.sub.6 ketones, such as methyl ethyl ketone, methyl isobutyl ketone and mixtures thereof, mixtures of ketones with aromatic such as MEK/toluene, halogenated C.sub.2 -C.sub.4 hydrocarbons such as tetrachloraethane, trichloro ethylene, etc. Autorefrigerative solvent dewaxing processes employing low boiling point, normally gaseous hydrocarbons, such as propane, propylene, butane, butene and mixtures of such solvents, with the aforesaid ketones, e.g., propane/MEK, are also benefited by use of the present dewaxing aid combination.Use of the combination dewaxing aid results in an improvement in feed filter rate and liquids/solids. ratio in the dewaxing process.
摘要翻译： 通过使用甲基丙烯酸聚（n-C24）烷基酯聚合物脱蜡助剂与较低熔点重量的聚（C 8 -C 20）甲基丙烯酸烷基酯聚合物脱蜡助剂组合来改善蜡质烃油的溶剂脱蜡。 使用该组合脱蜡助剂的溶剂脱蜡方法得到改进，是使用表面冷冻间接换热器装置或使用冷溶剂进行直接冷却的增量式和全部预稀释溶剂型方法。 溶剂脱蜡方法是使用通常液体脱蜡溶剂的那些方法，例如甲基乙基酮，甲基异丁基酮及其混合物，例如甲基乙基酮，甲基异丁基酮及其混合物，酮与芳族化合物如MEK /甲苯的混合物，卤代C 2 -C 4烃 作为四氯乙烷，三氯乙烯等。使用低沸点（通常为气态的烃，例如丙烷，丙烯，丁烷，丁烯和这些溶剂的混合物）与上述酮（例如丙烷/ MEK）的自动制冷溶剂脱蜡方法也受益匪浅 通过使用目前的脱蜡助剂组合。 使用组合脱蜡助剂可提高进料过滤速率和液体/固体。 脱蜡过程中的比例。
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公开(公告)号：US20220403264A1
公开(公告)日：2022-12-22
申请号：US17775700
申请日：2020-12-07
申请人： SHELL OIL COMPANY
发明人： Willem DERKS
摘要： The invention relates to a process for the recovery of aliphatic hydrocarbons from a liquid hydrocarbon feedstock stream comprising aliphatic hydrocarbons, heteroatom containing polar components and optionally aromatic hydrocarbons, said process comprising the steps of: a) mixing the liquid hydrocarbon feedstock stream with a solvent resulting in a liquid mixture; b) cooling the liquid mixture obtained in step a) to a temperature in the range of from +5° C. to −30° C. to obtain wax crystals in the mixture; c) separating wax crystals from the cooled liquid mixture obtained in step b) to produce a wax comprising aliphatic hydrocarbons and a dewaxed liquid mixture comprising solvent, heteroatom containing polar components and optionally aromatic hydrocarbons; d) separating solvent from the liquid mixture obtained in step c) and optionally recycling the separated solvent to step a). Further, the present invention relates to a process for the recovery of aliphatic hydrocarbons from plastics, and to a process for steam cracking a hydrocarbon feed.
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公开(公告)号：US20180142169A1
公开(公告)日：2018-05-24
申请号：US15579456
申请日：2016-06-10
申请人： Sulzer Chemtech AG
发明人： Mathias Pfeil
CPC分类号： C10G73/12 , B01D9/0013 , B01D2009/0086 , C10G73/06 , C10G73/10 , C10G73/14 , C10G73/16
摘要： The present invention relates to a method for fractionating a crude mixture comprising at least one oil and at least one wax, which comprises the following steps: (a) mixing the crude mixture with a solvent to obtain a crude solvent-mixture, (b) carrying out at least one crystallization stage with the solvent-mixture obtained in step (a) to prepare a first fraction containing dewaxed oil and a second fraction containing slack wax, (c) carrying out at least one crystallization stage with the second fraction obtained in step (b) in a layer crystallizer, wherein to the second fraction prior to the crystallization in step (c) no solvent or at most 100% by weight of solvent relative to the weight of the second fraction are added, to prepare a third fraction containing hard wax having an oil content of at most 1.5% by weight and a fourth fraction containing soft wax having an oil content of more than 1.5% by weight and (d) circulating at least a part of the fourth fraction into at least one of the at least one crystallization stage of step (b).
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公开(公告)号：US09540575B2
公开(公告)日：2017-01-10
申请号：US13982498
申请日：2012-02-06
IPC分类号： C10G73/12 , C10G29/22 , C08F220/18 , C10G21/16 , C10G31/06 , C10G73/04 , C10G73/06 , C10M101/02
CPC分类号： C10G73/12 , C08F220/18 , C10G21/16 , C10G29/22 , C10G31/06 , C10G73/04 , C10G73/06 , C10M101/02 , C10M2203/1006 , C10N2270/00 , C08F2220/1891
摘要： The present invention relates to a lubricant composition for a process for reducing the paraffin content of mineral oil compositions, by providing a mineral oil composition with a dewaxing aid, cooling to form a paraffin precipitate and at least partly removing the paraffin precipitate formed. The dewaxing aid used is a copolymer mixture comprising at least three copolymers, the copolymers differing in the composition of the repeat units.
摘要翻译： 本发明涉及一种用于通过提供具有脱蜡助剂的矿物油组合物来降低矿物油组合物的链烷烃含量的方法的润滑剂组合物，冷却以形成石蜡沉淀物并且至少部分地除去所形成的链烷烃沉淀物。 所用的脱蜡助剂是包含至少三种共聚物的共聚物混合物，所述共聚物在重复单元的组成上不同。
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9.发明授权Membrane process for treating a mixture containing dewaxed oil and dewaxing solvent 失效用于处理含脱蜡油和脱蜡溶剂的混合物的膜方法
公开(公告)号：US5102551A
公开(公告)日：1992-04-07
申请号：US692890
申请日：1991-04-29
申请人： Mordechai Pasternak
发明人： Mordechai Pasternak
IPC分类号： B01D61/02 , B01D71/70 , C08G77/48 , C10G31/11 , C10G73/00 , C10G73/04 , C10G73/12 , C10G73/32
摘要： Charge containing dewaxed oil and dewaxing solvent (typically methyl ethyl ketone and toluene) is treated to separate dewaxing solvent by use of a separating elastomer membrane barrier of a polysiloxane which has been cross-linked as with toluene diisocyanate, adipoyl dichloride, a dialkoxy silane, or a diacetoxy silane.
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10.发明授权Dewaxing waxy hydrocarbon oils using di-alkyl fumarate-vinyl laurate copolymer dewaxing aids 失效使用富马酸二烷基酯 - 月桂酸乙烯酯共聚物脱蜡助剂来脱蜡蜡质油
公开(公告)号：US4594142A
公开(公告)日：1986-06-10
申请号：US727021
申请日：1985-04-25
CPC分类号： C10G73/04
摘要： A solvent dewaxing process is described comprising mixing a waxy hydrocarbon oil, preferably a waxy petroleum oil, most preferably a waxy lube or specialties oil, with dewaxing solvent and a dewaxing aid comprising (A) a dialkylfumarate-vinyl laurate copolymer and (B) a wax-naphthalene condensation copolymer, a dialkyl fumarate-vinyl acetate copolymer or an ethylene vinyl acetate copolymer and chilling the mixture to yield a slurry comprising solid particles of precipitated wax and a solution of dewaxed oil and solvent and separating said solid wax from dewaxed oil solution.
摘要翻译： 描述了溶剂脱蜡方法，其包括将蜡质烃油，优选石蜡油，最优选蜡状润滑剂或特种油与脱蜡溶剂和脱蜡助剂混合，所述脱蜡助剂包含（A）富马酸二乙酯 - 月桂酸乙烯酯共聚物和（B） 蜡 - 萘缩合共聚物，富马酸二乙酯 - 乙酸乙烯酯共聚物或乙烯 - 乙酸乙烯酯共聚物，并冷却该混合物以产生包含沉淀蜡的固体颗粒和脱蜡油和溶剂的溶液的浆料，并将所述固体蜡与脱蜡油溶液 。
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