公开(公告)号：US09403744B2

公开(公告)日：2016-08-02

申请号：US12373730

申请日：2007-07-12

申请人： Marco Di Girolamo ,  Massimo Conte ,  Antonio Sgambati ,  Alberto Cipelli

发明人： Marco Di Girolamo ,  Massimo Conte ,  Antonio Sgambati ,  Alberto Cipelli

IPC分类号： C07C41/01 ,  C07C41/06

CPC分类号： C07C41/06 ,  C07C43/046

摘要： Process for the production of alkyl ethers by the etherification of isobutene, contained in C4-C5 hydrocarbon streams, with linear alcohol, in the presence of acid catalysts, comprising the following essential steps: a) feeding the isobutene contained in C4-C5 hydrocarbon cuts, together with one or more streams containing linear alcohol, to a first reaction step; b) sending the stream leaving the first reaction step to a first distillation area, separating a light stream from a heavy stream containing the desired ether; c) feeding the light stream separated in the first distillation area, together with one or more streams containing linear alcohol, to a second reaction step; d) sending the stream leaving the second reaction step to a second distillation area separating a light stream from a heavy stream containing ether, C4 hydrocarbons and alcohol which is recycled to the first distillation area; e) sending the light stream in the second distillation area to a recovery section of the linear alcohol contained therein; f) recycling the linear alcohol recovered in the recovery section to at least one of the two reaction steps. The present invention relates to plant solutions which allow the alcohol/isobutene molar ratio to be increased in the reaction steps and therefore maximizing the conversion of isobutene.

摘要翻译： 通过在酸性催化剂存在下，用线性醇在C4-C5烃流中醚化异丁烯来生产烷基醚的方法，包括以下必要步骤：a）将包含在C 4 -C 5烃馏分中的异丁烯 与一种或多种含有线性醇的料流一起加到第一反应步骤; b）将离开第一反应步骤的料流送至第一蒸馏区域，从含有所需醚的重质流中分离出轻质物流; c）将在第一蒸馏区域中分离的轻质流与一种或多种含有线性醇的料流一起送入第二反应步骤; d）将离开第二反应步骤的料流送至第二蒸馏区域，该第二蒸馏区域将来自含有醚，C4烃和醇的重质流的轻质流与循环至第一蒸馏区的分离; e）将第二蒸馏区域中的轻质流送入其中所含的直链醇的回收段; f）将回收部分中回收的线性醇再循环到两个反应步骤中的至少一个。 本发明涉及允许反应步骤中醇/异丁烯摩尔比增加并因此使异丁烯转化率最大化的植物溶液。

公开(公告)号：US20090253942A1

公开(公告)日：2009-10-08

申请号：US12373730

申请日：2007-07-12

申请人： Marco Di Girolamo ,  Massimo Conte ,  Antonio Sgambati ,  Alberto Cipelli

发明人： Marco Di Girolamo ,  Massimo Conte ,  Antonio Sgambati ,  Alberto Cipelli

IPC分类号： C07C41/01

CPC分类号： C07C41/06 ,  C07C43/046

摘要： Process for the production of alkyl ethers by the etherification of isobutene, contained in C4-C5 hydrocarbon streams, with linear alcohol, in the presence of acid catalysts, comprising the following essential steps: a) feeding the isobutene contained in C4-C5 hydrocarbon cuts, together with one or more streams containing linear alcohol, to a first reaction step; b) sending the stream leaving the first reaction step to a first distillation area, separating a light stream from a heavy stream containing the desired ether; c) feeding the light stream separated in the first distillation area, together with one or more streams containing linear alcohol, to a second reaction step; d) sending the stream leaving the second reaction step to a second distillation area separating a light stream from a heavy stream containing ether, C4 hydrocarbons and alcohol which is recycled to the first distillation area; e) sending the light stream in the second distillation area to a recovery section of the linear alcohol contained therein; f) recycling the linear alcohol recovered in the recovery section to at least one of the two reaction steps. The present invention relates to plant solutions which allow the alcohol/isobutene molar ratio to be increased in the reaction steps and therefore maximizing the conversion of isobutene.

摘要翻译： 通过在酸性催化剂存在下，用线性醇在C4-C5烃流中醚化异丁烯来生产烷基醚的方法，包括以下必要步骤：a）将包含在C 4 -C 5烃馏分中的异丁烯 与一种或多种含有线性醇的料流一起加到第一反应步骤; b）将离开第一反应步骤的料流送至第一蒸馏区域，从含有所需醚的重质流中分离出轻质物流; c）将在第一蒸馏区域中分离的轻质流与一种或多种含有线性醇的料流一起送入第二反应步骤; d）将离开第二反应步骤的料流送至第二蒸馏区域，该第二蒸馏区域将来自含有醚，C4烃和醇的重质流的轻质流与循环至第一蒸馏区的分离; e）将第二蒸馏区域中的轻质流送入其中所含的直链醇的回收段; f）将回收部分中回收的线性醇再循环到两个反应步骤中的至少一个。 本发明涉及允许反应步骤中醇/异丁烯摩尔比增加并因此使异丁烯转化率最大化的植物溶液。