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公开(公告)号：US4260476A
公开(公告)日：1981-04-07
申请号：US117295
申请日：1980-01-31
CPC分类号： C10G21/28
摘要： An improvement to a continuous solvent extraction-steam-distillation process for the recovery of aromatic hydrocarbons in the range of C.sub.6 -C.sub.16 from a feed stream containing such aromatics and aliphatic hydrocarbons in the range of C.sub.5 -C.sub.16 which resides in using two extractive distillation zones thermally linked to recover heat and solvent, thereby resulting in a heat savings.
摘要翻译： 连续溶剂萃取 - 蒸汽蒸馏方法的改进，用于从含有C 5 -C 16范围内的芳族烃和脂族烃的进料流中回收C 6 -C 16范围内的芳族烃，其存在于使用两个萃取蒸馏区 热连接以回收热和溶剂，从而导致热量的节省。
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2.发明授权
公开(公告)号：US4401560A
公开(公告)日：1983-08-30
申请号：US394301
申请日：1982-07-01
CPC分类号： C10G21/00
摘要： An improvement to a continuous solvent extraction-steam distillation process for the recovery of aromatic hydrocarbons in the range of C.sub.6 -C.sub.16 from a feed stream containing such aromatics and aliphatic hydrocarbons in the range of C.sub.5 -C.sub.16 which resides in utilizing two heat exchangers wherein the heat of condensation of the overhead stripper vapor and vapor sidedraw products is recovered and utilized to vaporize the stripping water, thereby producing stripping steam which in turn is compressed up to the pressure present at the bottom of the stripper and resulting in the reduction of the heat load of the process.
摘要翻译： 连续溶剂萃取 - 蒸汽蒸馏方法的改进，用于从含有C 5 -C 16范围内的芳烃和脂族烃的进料流中回收C 6 -C 16范围内的芳族烃，该方法使用两种热交换器，其中 回收塔顶汽提塔蒸气和蒸汽侧面产品的冷凝热并蒸发汽提水，从而产生汽提蒸汽，汽提蒸汽又被压缩至汽提塔底部存在的压力并导致热量降低 加载过程。
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公开(公告)号：US4693810A
公开(公告)日：1987-09-15
申请号：US741830
申请日：1985-06-06
申请人： Paulino Forte , Jose A. Vidueira
发明人： Paulino Forte , Jose A. Vidueira
摘要： In a solvent extraction/steam distillation process for the recovery of aromatic hydrocarbons wherein stripping water is obtained from the distillation column, the improvement comprising(a) dividing the stripping water into two streams;(b) passing one stream to a motive steam generator wherein the stripping water is vaporized and passed to a steam ejector;(c) passing the other stream to a heat exchanger wherein the stripping water is vaporized by lean solvent from the distillation column, the lean solvent is cooled, and the stripping water vapor passes to the steam ejector;(d) passing the stripping water vapor from steps (b) and (c) to the distillation column; and(e) passing the lean solvent from step (c) to the extractor.
摘要翻译： 在用于回收芳族烃的溶剂萃取/蒸汽蒸馏方法中，其中从蒸馏塔获得汽提水，其改进包括（a）将汽提水分成两股料流; （b）将一条流送至动力蒸汽发生器，其中汽提水汽化并通过蒸汽喷射器; （c）使另一个流通过热交换器，其中汽提水通过贫溶剂从蒸馏塔蒸发，贫溶剂被冷却，汽提水蒸汽通过蒸汽喷射器; （d）将来自步骤（b）和（c）的汽提水蒸汽通入蒸馏塔; 和（e）将来自步骤（c）的贫溶剂通入萃取器。
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公开(公告)号：US4690733A
公开(公告)日：1987-09-01
申请号：US794845
申请日：1985-11-04
申请人： Paulino Forte , Jose A. Vidueira
发明人： Paulino Forte , Jose A. Vidueira
IPC分类号： B01D3/32 , B01D3/38 , B01D3/40 , C07C7/08 , C07C7/10 , C07C15/00 , C10G7/08 , C10G21/28 , B01D11/00
CPC分类号： B01D3/322 , B01D3/38 , B01D3/40 , C07C7/10 , C10G21/28 , C10G7/08 , Y10S203/08 , Y10S203/16 , Y10S203/90
摘要： In a combination solvent extraction-steam distillation process for the recovery of aromatic hydrocarbons, the improvement comprising(a) introducing high pressure steam into a steam ejector;(b) passing the steam from step (a) to a first heat exchanger where it exchanges heat with cooler lean solvent coming from the bottom of the distillation column and is condensed;(c) returning the lean solvent from step (b) to the bottom of the distillation column;(d) passing part of the condensate from step (b) to a second heat exchanger where it exchanges heat with the warmer lean solvent coming from the bottom of the distillation column, cooling the lean solvent and vaporizing the condensate; and(e) passing the vapor from step (d) to the steam ejector in step (a).
摘要翻译： 在用于回收芳烃的组合溶剂萃取 - 蒸汽蒸馏方法中，改进包括（a）将高压蒸汽引入蒸汽喷射器中; （b）将来自步骤（a）的蒸汽通入第一热交换器，在该第一热交换器中，与来自蒸馏塔底部的较冷的贫溶剂进行热交换并冷凝; （c）将来自步骤（b）的贫溶剂返回到蒸馏塔的底部; （d）将来自步骤（b）的部分冷凝物通入第二热交换器，在该第二热交换器中，与来自蒸馏塔底部的较热的贫溶剂进行热交换，冷却贫溶剂并蒸发冷凝物; 和（e）在步骤（a）中将来自步骤（d）的蒸汽通入蒸汽喷射器。
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公开(公告)号：US4664786A
公开(公告)日：1987-05-12
申请号：US839633
申请日：1986-03-14
申请人： Paulino Forte , Jose A. Vidueira
发明人： Paulino Forte , Jose A. Vidueira
IPC分类号： B01D3/32 , B01D3/38 , B01D3/40 , C07C7/08 , C07C7/10 , C07C15/00 , C10G7/08 , C10G21/28 , C10G7/00
CPC分类号： B01D3/322 , B01D3/38 , B01D3/40 , C07C7/10 , C10G21/28 , C10G7/08 , Y10S203/08 , Y10S203/16 , Y10S203/90
摘要： In a steam distillation process for the recovery of aromatic hydrocarbons wherein there is (i) a primary flash zone at the top of the distillation zone in which rich solvent is flashed and/or (ii) provision for the removal of side cut distillate vapors from about the middle of the distillation zone, the improvement comprising (a) heat exchanging flashed rich solvent vapors or side-cut distillate vapors with stripping water to provide stripping water vapors and stripping water at at least about the boiling point of water; (b) passing the stripping water vapors from step (a) to a steam ejector; (c) passing the stripping water from step (a) to a motive steam generator wherein the stripping water is vaporized under pressure; (d) passing the stripping water vapors from step (c) to the steam ejector referred to in step (b); and (e) passing the stripping water vapors, introduced into the steam ejector in accordance with steps (b) and (d), to the lower half of the distillation zone.
摘要翻译： 在用于回收芳族烃的蒸汽蒸馏方法中，其中存在（i）蒸馏区顶部的主闪蒸区，其中富溶剂被闪蒸和/或（ii）提供从侧馏分蒸气中除去的侧馏分蒸气 围绕蒸馏区的中部，改进包括（a）用汽提水热交换闪蒸的富溶剂蒸气或侧馏分蒸汽，以在至少约沸点的水沸点提供汽提水蒸气和汽提水; （b）将汽提水蒸汽从步骤（a）送入蒸汽喷射器; （c）将来自步骤（a）的汽提水送至动力蒸汽发生器，其中汽提水在压力下蒸发; （d）将汽提水蒸气从步骤（c）传送到步骤（b）中提到的蒸汽喷射器; 和（e）将根据步骤（b）和（d）引入蒸汽喷射器的汽提水蒸气通到蒸馏区的下半部分。
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公开(公告)号：US4247521A
公开(公告)日：1981-01-27
申请号：US66853
申请日：1979-08-15
申请人： Paulino Forte , George S. Somekh
发明人： Paulino Forte , George S. Somekh
CPC分类号： B01D11/043 , B01D3/22
摘要： A liquid-liquid contacting tray comprising a perforated deck providing a major portion of the tray surface area and continuous phase liquid transfer means comprising a settling section extending outwardly from the tray deck on one side of the tray and joined in closed flow communication with a smaller cross-sectioned pressure drop section extending outwardly from the tray deck on the other side of the tray to provide a sudden contraction in cross-sectional area from the settling section to said pressure drop section substantially in the plane of the perforated deck for reduction of pressure in the liquid flowed therethrough.
摘要翻译： 液体接触托盘，其包括提供托盘表面区域的主要部分的多孔甲板和连续相液体输送装置，其包括从托盘的一侧向外延伸的沉降部分，并与较小的 横截面的压降部分从托盘的另一侧的托盘甲板向外延伸，以提供基本上在多孔板的平面中从沉降部分到所述压降部分的横截面积的突然收缩，以降低压力 在流过其中的液体中。
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7.发明授权
公开(公告)号：US5336840A
公开(公告)日：1994-08-09
申请号：US25294
申请日：1993-03-02
申请人： Paulino Forte
发明人： Paulino Forte
摘要： A continuous solvent extraction process for the separation of aromatic hydrocarbons from a feedstock comprising aromatic and non-aromatic hydrocarbons provides more efficient heat utilization by using a lean solvent stream to heat the rich solvent stream as it passes from a primarily extractive stripping section to a section that primarily provides steam stripping. The feed stream is contacted with a lean solvent stream in an extraction zone to separate it into a raffinate stream comprising non-aromatic hydrocarbons and a first rich solvent stream comprising solvent, aromatic hydrocarbons and non-aromatic hydrocarbons. The first rich solvent stream passes to a first stripping zone section from which a first vapor stream is recovered and a second rich solvent stream is discharged. As the second rich solvent stream is passed to a second section of the stripping zone it is heated by heat exchange with the lean solvent stream that is recovered from the second stripping zone section. Heat exchange of the rich solvent with the lean solvent between stripping sections removes substantially more heat from the lean solvent stream than was previously removed when the lean solvent stream was used to heat stripping steam. The additional heat made available by this invention reduces the overall heat input and permits the use of low pressure steam to heat the stripping stream.
摘要翻译： 用于从包含芳族和非芳族烃的原料分离芳族烃的连续溶剂萃取方法通过使用贫溶剂流将富溶剂流从主要提取汽提段通过至一部分，从而提供更有效的热利用 主要提供汽提。 将进料流与萃取区中的贫溶剂流接触以将其分离成包含非芳族烃的萃余液流和包含溶剂，芳族烃和非芳族烃的第一富溶剂流。 第一富溶剂流进入第一汽提区段，从该第一汽提区段回收第一蒸气流并排出第二富溶剂流。 当第二富溶剂流被传送到汽提区的第二部分时，通过与从第二汽提区段回收的贫溶剂流的热交换来加热。 浓缩溶剂与汽提段之间的贫溶剂的热交换从贫溶剂流中除去当贫溶剂流用于加热汽提蒸汽时，从贫去溶剂流中除去大量的热量。 本发明提供的额外的热量降低了整个热输入，并允许使用低压蒸汽来加热汽提流。
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8.发明授权公开(公告)号：US06337059B1
公开(公告)日：2002-01-08
申请号：US09304283
申请日：1999-05-03
IPC分类号： B01D5340
CPC分类号： B01D53/1493 , B01D53/1456 , Y02C10/06
摘要： An absorbent composition for the removal of acid gases, such as CO2, H2S and COS, from gas streams is provided. The absorbent composition comprises an aqueous solution comprising: 1) greater than 1 mole piperazine per liter of aqueous solution; and 2) about 1.5 to about 6 moles methyldiethanolamine per liter of aqueous solution.
摘要翻译： 提供了用于从气流中除去酸性气体如CO 2，H 2 S和COS的吸收组合物。 吸收组合物包含水溶液，其包含：1）每升水溶液大于1摩尔哌嗪; 和2）约1.5至约6摩尔甲基二乙醇胺/升水溶液。
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9.发明授权
公开(公告)号：US5563315A
公开(公告)日：1996-10-08
申请号：US173856
申请日：1993-12-22
申请人： Paulino Forte
发明人： Paulino Forte
摘要： The invention relates to a process for separating aromatic hydrocarbons from a mixed hydrocarbon feed employing a selective solvent which exhibits a low critical solution temperature of the solvent with a solute. The mixed hydrocarbon feed is passed to an extraction zone wherein the feed is contacted with a lean solvent to provide a raffinate stream comprising non-aromatics and a rich solvent stream comprising aromatics and solvent. Both the raffinate stream and the rich solvent stream are admixed with a sufficient amount of a solute at a temperature which is at or below a low critical solution temperature with the solvent to separate the raffinate and aromatic phases from the solvent/solute mixture. The solvent/solute mixture is heated to a separation temperature which is above the low critical solution temperature to provide a solvent phase which is essentially free of solute at energy levels significantly lower than conventional processes.
摘要翻译： 本发明涉及使用选择性溶剂从混合烃进料中分离芳族烃的方法，该选择性溶剂表现出溶剂与溶质的临界溶解温度低。 将混合的烃进料通入萃取区，其中进料与贫溶剂接触以提供包含非芳族化合物和富含芳烃和溶剂的富溶剂流的萃余液流。 将萃余液流和富溶剂流与足够量的溶质在等温或低于低临界溶解温度的温度下与溶剂混合，以将溶剂/溶质混合物中的萃余液和芳烃相分离。 将溶剂/溶质混合物加热到高于低临界溶解温度的分离温度，以提供基本上不含常规方法的能级的溶质的溶剂相。
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10.发明授权
公开(公告)号：US5176821A
公开(公告)日：1993-01-05
申请号：US657916
申请日：1991-02-20
申请人： Paulino Forte
发明人： Paulino Forte
摘要： In a combined solvent extraction/steam distillation process for the separation of aromatic hydrocarbons from a mixture of aromatic and non-aromatic hydrocarbons, there are three major thermal and material cycles: the solvent cycle, the hydrocarbon cycle, and the water cycle. The process is improved by redistributing the energy use between the three cycles to minimize the internal recycle within the process and to reduce the overall energy requirements. One means of the redistribution includes cooling of a lean solvent stream with liquid in a recovery or stripping column. Cooling of the lean solvent reduces flashing within an extract column and the resulting reflux of hydrocarbons to the extract column.
摘要翻译： 在芳族烃和芳香烃混合物中分离芳烃的组合溶剂萃取/蒸汽蒸馏方法中，有三个主要的热和物质循环：溶剂循环，烃循环和水循环。 通过重新分配三个循环之间的能量使用来最大限度地减少过程内的内部循环并降低总体能量需求来改进该过程。 重新分配的一种方法包括在回收塔或汽提塔中用液体冷却贫溶剂流。 贫溶剂的冷却降低了萃取塔内的闪蒸，并使所得的烃回流至萃取柱。
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