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1.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：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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6.发明授权
公开(公告)号：US5225072A
公开(公告)日：1993-07-06
申请号：US563138
申请日：1990-08-03
申请人： Jose A. Vidueira
发明人： Jose A. Vidueira
摘要： Processes are disclosed for the separation of aromatic hydrocarbons from feedstreams containing mixtures of aromatic and non-aromatic hydrocarbons using extractive distillation with an aromatic selective solvent in order to separate the aromatic hydrocarbons from the non-aromatic hydrocarbons. A rich solvent stream comprising the aromatic hydrocarbons and solvent is withdrawn from the extractive distillation column and passed to a steam stripping column to provide a regenerated lean solvent stream, a side-cut stream comprising the aromatic hydrocarbons and a stripper overhead stream comprising non-aromatic hydrocarbons which are passed as a reflux stream to the extractive distillation column. Various solvents are disclosed and an especially preferred solvent is sulfolane.
摘要翻译： 公开了使用萃取蒸馏与芳族选择性溶剂从芳烃和非芳族烃混合物的进料流中分离芳族烃的方法，以将芳族烃与非芳族烃分离。 包含芳族烃和溶剂的富溶剂流从萃取蒸馏塔中排出并通入蒸汽汽提塔，以提供再生的贫溶剂流，包含芳族烃的侧馏分物流和包含非芳族化合物 作为回流流通入萃取蒸馏塔的烃。 公开了各种溶剂，特别优选的溶剂是环丁砜。
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7.发明授权
公开(公告)号：US5310480A
公开(公告)日：1994-05-10
申请号：US785717
申请日：1991-10-31
申请人： Jose A. Vidueira
发明人： Jose A. Vidueira
CPC分类号： C10G7/08
摘要： Processes are disclosed for the separation of aromatic hydrocarbons from feedstreams containing mixtures of aromatic and non-aromatic hydrocarbons using extractive distillation with an aromatic selective solvent in order to separate the aromatic hydrocarbons from the non-aromatic hydrocarbons. A side stream comprising the aromatic hydrocarbons and trace amounts of entrained aromatic selective solvent is withdrawn from the extractive distillation column and passed to a cyclone separator to provide a lean solvent stream, a stream comprising the aromatic hydrocarbons. The raffinate is withdrawn as an overhead stream comprising non-aromatic hydrocarbons. Various solvents are disclosed and an especially preferred solvent is sulfolane.
摘要翻译： 公开了使用萃取蒸馏与芳族选择性溶剂从芳烃和非芳族烃混合物的进料流中分离芳族烃的方法，以将芳烃与非芳族烃分离。 将包含芳族烃和痕量的夹带的芳族选择性溶剂的侧流从萃取蒸馏塔中取出并通入旋风分离器以提供贫溶剂流，包含芳族烃的物流。 抽提物作为包含非芳族烃的塔顶物流取出。 公开了各种溶剂，特别优选的溶剂是环丁砜。
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