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公开(公告)号：US5750800A
公开(公告)日：1998-05-12
申请号：US556117
申请日：1995-11-09
CPC分类号： C07C41/05 , C07C5/333 , Y02P20/125
摘要： An integrated process to produce diisopropyl ether from propane has been developed. In a first reaction zone the propane in a feedstock, after any hydrocarbons containing four or more carbon atoms are removed from the feedstock via fractionation, is dehydrogenated in the presence of a dehydrogenation catalyst to form propylene. After removing hydrogen, the propane and propylene mixture generated in the first reaction zone is separated into a propane enriched stream and a propylene enriched stream where the propylene enriched stream contains at least 65 mass % propylene. The propane enriched stream is recycled to the feedstock fractionation unit, and the propylene of the propylene enriched stream is reacted with water in a second reaction zone in the presence of an acidic catalyst to form isopropyl alcohol which is concurrently reacted with propylene to produce diisopropyl ether. A portion of the second reaction zone effluent is recycled to the second reaction zone, and the remainder may be collected or further separated to provide a high purity diisopropyl ether product. A variant to produce high purity propylene as well as diisopropyl ether is also discussed.
摘要翻译： 已经开发了从丙烷生产二异丙醚的综合方法。 在第一反应区中，原料中的丙烷在含有四个或更多个碳原子的烃通过分馏从原料中除去后，在脱氢催化剂存在下脱氢形成丙烯。 除去氢气后，在第一反应区产生的丙烷和丙烯混合物分离成富丙烷流和富丙烯流，其中富含丙烯的料流含有至少65质量％的丙烯。 将富丙烷流再循环至原料分馏装置，在酸性催化剂存在下，使丙烯富集物流的丙烯与第二反应区中的水反应形成异丙醇，同时与丙烯反应产生二异丙醚 。 第二反应区流出物的一部分再循环至第二反应区，其余部分可以被收集或进一步分离以提供高纯度的二异丙醚产物。 还讨论了生产高纯度丙烯以及二异丙基醚的变体。
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公开(公告)号：US06072093A
公开(公告)日：2000-06-06
申请号：US187714
申请日：1998-11-06
CPC分类号： C07C2/08 , C07C11/02 , C07C2/18 , C07C9/22 , C07C2527/173
摘要： A process for the production of C.sub.8 and higher olefins by the oligomerization of light olefins to heavier olefins is improved by the addition of cycloparaffins to the oligomerization zone. The recycle of the cycloparaffins extends the catalyst activity and improves the catalyst life. Cyclohexane provides an excellent solvent for removing deposits from the catalyst with chemical inertness to the process and a boiling range that allows its essentially complete recovery when producing nonenes and higher olefins from propylene feeds.
摘要翻译： 通过在低聚区域中加入环烷烃，可以改善通过将轻质烯烃低聚成重质烯烃制备C8和高级烯烃的方法。 环烷烃的再循环延长了催化剂活性，提高了催化剂寿命。 环己烷提供了一种极好的溶剂，用于从催化剂中除去沉积物，对该方法具有化学惰性，沸点范围允许当从丙烯进料生产非烯烃和高级烯烃时，其基本上完全恢复。
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公开(公告)号：US6080903A
公开(公告)日：2000-06-27
申请号：US187263
申请日：1998-11-06
CPC分类号： C07C2/18 , C07C11/02 , C07C2/08 , C07C9/22 , C07C2527/173
摘要： A process for the production of C.sub.8 and higher carbon number alkene oligomers by the oligomerization of light olefins to heavier olefins is improved by the addition of heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins extends the catalyst activity and improves the catalyst life. The non-reactive paraffin stream may be recycled through the process with minimal losses and make-up.
摘要翻译： 通过在低聚区域中加入重质链烷烃，可以改善通过将轻质烯烃低聚成重质烯烃制备C8和更高碳数的烯烃低聚物的方法。 重链烷烃的再循环延长了催化剂活性，提高了催化剂寿命。 非反应性石蜡流可以通过该方法循环使用，具有最小的损失和补充。
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公开(公告)号：US5811608A
公开(公告)日：1998-09-22
申请号：US573315
申请日：1995-12-15
IPC分类号： B01J27/16 , C07B61/00 , C07C2/08 , C07C2/18 , C07C2/56 , C07C5/02 , C07C9/00 , C07C11/02 , C10G69/02 , C10G69/12 , C07C2/74 , C07C5/03
CPC分类号： C10G69/126 , C07C2/20 , C07C9/00 , C07C2527/173 , Y02P20/132
摘要： A process for the production of saturated oligomers by the oligomerization of light olefins to heavier olefins and the saturation of the heavy olefins is improved by the recycle of the heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins improves the selectivity of the oligomerization for C.sub.8 paraffin products and reduces catalyst fouling. The reduced catalyst fouling can be used to operate the oligomerization zone at lower pressure and facilitate its integration with a dehydrogenation zone for the production of the light olefin stream.
摘要翻译： 通过将重质链烷烃再循环到低聚区，通过将轻质烯烃低聚成较重烯烃并使重质烯烃饱和来制备饱和低聚物的方法得到改善。 重链烷烃的再循环改善了C8烷烃产物的低聚选择性并减少催化剂结垢。 减少的催化剂结垢可用于在较低压力下操作低聚区，并促进其与用于生产轻质烯烃流的脱氢区的一体化。
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公开(公告)号：US06284938B1
公开(公告)日：2001-09-04
申请号：US09467701
申请日：1999-12-20
IPC分类号： C07C218
CPC分类号： C07C2/18 , C07C2/08 , C07C9/22 , C07C11/02 , C07C2527/173
摘要： A process for the production of C8 and higher carbon number alkene oligomers by the oligomerization of light olefins to heavier olefins is improved by the addition of heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins extends the catalyst activity and improves the catalyst life. The non-reactive paraffin stream may be recycled through the process with minimal losses and make-up.
摘要翻译： 通过在低聚区域中加入重质链烷烃，可以改善通过将轻质烯烃低聚成重质烯烃制备C8和更高碳数的烯烃低聚物的方法。 重链烷烃的再循环延长了催化剂活性，提高了催化剂寿命。 非反应性石蜡流可以通过该方法循环使用，具有最小的损失和补充。
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公开(公告)号：US5990367A
公开(公告)日：1999-11-23
申请号：US187699
申请日：1998-11-06
CPC分类号： C07C2/08 , C07C11/02 , C07C2/18 , C07C9/22 , C07C2527/173
摘要： A process for the production of C.sub.8 and higher olefins by the oligomerization of light olefins to heavier olefins is improved by the addition of heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins extends the catalyst activity and improves the catalyst life.
摘要翻译： 通过在低聚区域中加入重质链烷烃，可以提高通过轻质烯烃向较重烯烃的低聚制备C8和高级烯烃的方法。 重链烷烃的再循环延长了催化剂活性，提高了催化剂寿命。
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公开(公告)号：US5895830A
公开(公告)日：1999-04-20
申请号：US990828
申请日：1997-12-15
CPC分类号： C07C9/22 , C07C11/02 , C07C2/08 , C07C2/18 , C07C2527/173
摘要： A process for the production of C.sub.8 alkene isomers by the oligomerization of light olefins to heavier olefins is improved by the addition of heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins improves the selectivity of the oligomerization for C.sub.8 olefin isomers that have a high octane number when saturated and reduces catalyst fouling. The saturated octane number of the resulting C.sub.8 isomers is particularly improved when the oligomerization zone is operated at reduced temperature conditions.
摘要翻译： 通过在低聚区域中加入重质链烷烃，可以改善通过将轻质烯烃低聚成重质烯烃制备C8烯烃异构体的方法。 重链烷烃的再循环改善了当饱和时具有高辛烷值并降低催化剂结垢的C8烯烃异构体的低聚选择性。 当低温区在降低的温度条件下运行时，所得的C8异构体的饱和辛烷值特别提高。
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