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公开(公告)号：US10532967B2
公开(公告)日：2020-01-14
申请号：US16340838
申请日：2017-10-17
发明人： Roger Bence , Robert Gallen , Robert Wild
IPC分类号： C07C29/149 , C07C31/20
摘要： A process for the production of propylene glycol from a lactate ester is disclosed. The process comprises supplying a feed comprising a C3-6 alkyl lactate ester. The feed is contacted with a stream of hydrogen containing gas and subjected to hydrogenation in the vapour phase in the presence of a catalyst at a temperature of from about 130° C. to about 185° C., a pressure of from about 20 bar to about 60 bar, and a weight hourly space velocity greater than about 0.3 h−1. The catalyst is a reduced copper catalyst selected from copper alumina, optionally comprising manganese, copper chromite, copper zinc oxide and Raney copper.
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公开(公告)号：US09228156B2
公开(公告)日：2016-01-05
申请号：US14407862
申请日：2013-05-23
摘要： In a process for producing fatty acid esters, a fatty acid or fatty acid mixture is subjected to esterification with a lower alkanol in an esterification reactor maintained under esterification conditions to form a stream comprising the corresponding lower alkyl ester(s). An overhead stream comprising unreacted lower alkanol, water and a heavy organic content of one or more of lower alkyl ester and/or acids is recovered from the reactor. The overhead stream is subjected to distillation in a first distillation column to separate a portion of the lower alkanol from a stream comprising the water, the remaining lower alkanol and the heavy organic content. This stream is recovered and subjected to distillation in a second distillation column to provide an overhead stream comprising lower alkanol and at least a major portion of the heavy organic content and a water stream having a reduced heavy organic and alkanol content.
摘要翻译： 在制备脂肪酸酯的方法中，脂肪酸或脂肪酸混合物在维持在酯化条件下的酯化反应器中用低级链烷醇进行酯化，形成包含相应的低级烷基酯的物流。 从反应器回收包含未反应的低级链烷醇，水和一种或多种低级烷基酯和/或酸的重质有机含量的塔顶物流。 将顶部物流在第一蒸馏塔中进行蒸馏以从包含水，剩余的低级链烷醇和重的有机物含量的物流中分离一部分低级链烷醇。 将该料流回收并在第二蒸馏塔中进行蒸馏以提供包含低级链烷醇和至少大部分重质有机物含量的塔顶料流和具有降低的重的有机和链烷醇含量的水流。
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公开(公告)号：US20150291491A1
公开(公告)日：2015-10-15
申请号：US14432258
申请日：2013-10-03
发明人： Paul John Cassidy , Robert Wild , Rikard Umberto Andersson , Simon Nicholas Tilley , Adrian Backes
IPC分类号： C07C29/17
CPC分类号： C07C29/17 , C07C29/128 , C07C29/149 , C07C29/80 , C07C31/125 , C07C67/03 , C07C67/08 , C07C69/26 , C07C69/24
摘要： In a process for producing fatty alcohol, fatty acid is subjected to esterification with a lower alkanol to form a stream of lower alkyl fatty acid ester(s). The stream is vaporized and then subjected to hydrogenation. The stream is then subjected to transesterification in a wax ester reactor to convert at least a portion of the lower alkyl fatty acid ester(s) to lower alkanol and wax ester(s). The resulting stream is then separated to yield a fatty alcohol(s) steam, a wax ester(s) stream, and an overhead stream comprising fatty alkanol(s) and alkane. The overhead stream is reacted in a wax ester reactor to convert at least a portion of the lower alkyl fatty acid ester to lower alkanol and wax ester(s). The wax ester(s) formed from the alkane is separated, along with any water and/or lower alkanol present.
摘要翻译： 在生产脂肪醇的方法中，脂肪酸与低级链烷醇进行酯化反应形成低级烷基脂肪酸酯流。 将该物流汽化，然后进行氢化。 然后将该物流在蜡酯反应器中进行酯交换以将至少一部分低级烷基脂肪酸酯转化为低级链烷醇和蜡酯。 然后将所得流分离，得到脂肪醇蒸汽，蜡酯流和包含脂肪链烷醇和烷烃的塔顶物流。 顶部物流在蜡酯反应器中反应以将至少一部分低级烷基脂肪酸酯转化为低级链烷醇和蜡酯。 由烷烃形成的蜡酯与存在的任何水和/或低级链烷醇一起分离。
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公开(公告)号：US09212114B2
公开(公告)日：2015-12-15
申请号：US14432258
申请日：2013-10-03
发明人： Paul John Cassidy , Robert Wild , Rikard Umberto Andersson , Simon Nicholas Tilley , Adrian Backes
IPC分类号： C07C29/17 , C07C29/128 , C07C31/125 , C07C29/80 , C07C29/149
CPC分类号： C07C29/17 , C07C29/128 , C07C29/149 , C07C29/80 , C07C31/125 , C07C67/03 , C07C67/08 , C07C69/26 , C07C69/24
摘要： In a process for producing fatty alcohol, fatty acid is subjected to esterification with a lower alkanol to form a stream of lower alkyl fatty acid ester(s). The stream is vaporized and then subjected to hydrogenation. The stream is then subjected to transesterification in a wax ester reactor to convert at least a portion of the lower alkyl fatty acid ester(s) to lower alkanol and wax ester(s). The resulting stream is then separated to yield a fatty alcohol(s) steam, a wax ester(s) stream, and an overhead stream comprising fatty alkanol(s) and alkane. The overhead stream is reacted in a wax ester reactor to convert at least a portion of the lower alkyl fatty acid ester to lower alkanol and wax ester(s). The wax ester(s) formed from the alkane is separated, along with any water and/or lower alkanol present.
摘要翻译： 在生产脂肪醇的方法中，脂肪酸与低级链烷醇进行酯化反应形成低级烷基脂肪酸酯流。 将该物流汽化，然后进行氢化。 然后将该物流在蜡酯反应器中进行酯交换以将至少一部分低级烷基脂肪酸酯转化为低级链烷醇和蜡酯。 然后将所得流分离，得到脂肪醇蒸汽，蜡酯流和包含脂肪链烷醇和烷烃的塔顶物流。 顶部物流在蜡酯反应器中反应以将至少一部分低级烷基脂肪酸酯转化为低级链烷醇和蜡酯。 由烷烃形成的蜡酯与存在的任何水和/或低级链烷醇一起分离。
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