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Patent Agency Ranking
公开(公告)号：US20130071901A1
公开(公告)日：2013-03-21
申请号：US13624283
申请日：2012-09-21
Applicant: SHELL OIL COMPANY
Inventor： Evert VAN DER HEIDE , Munro MACKAY
CPC classification number: C13K13/002 , Y02E50/16
Abstract: A xylan-containing feed is contacted, in the first reactor essentially operated at plug flow, with an aqueous solution of an acid at a temperature in the range from equal to or more than 140° C. to equal to or less than 210° C. to produce an intermediate product. Then, the intermediate product is contacted, in the second reactor which comprises a continuously stirred tank reactor, with an aqueous solution of an acid at a temperature in the range from more than 130° C. to equal to or less than 200° C. to produce a final product.
Abstract translation: 将含木聚糖的进料在基本上以活塞流动操作的第一反应器中与酸的水溶液在等于或大于140℃至等于或小于210℃的温度下接触 生产中间产品。 然后，将中间产物在包含连续搅拌的罐式反应器的第二反应器中与酸的水溶液在大于130℃至等于或小于200℃的温度下接触。 生产最终产品。
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公开(公告)号：US20180273452A1
公开(公告)日：2018-09-27
申请号：US15763466
申请日：2016-09-27
Applicant: SHELL OIL COMPANY
IPC: C07C29/132 , C07C29/60 , B01J23/652 , B01J37/18
CPC classification number: C07C29/132 , B01J23/6527 , B01J37/18 , C07C29/60 , Y02P20/52 , C07C31/202 , C07C31/205
Abstract: The invention provides a process for the production of glycols comprising the step of adding to a reactor vessel a saccharide-containing feedstock, a solvent, hydrogen, a retro-aldol catalyst composition and a catalyst precursor and maintaining the reactor vessel at a temperature and a pressure, wherein the catalyst precursor comprises one or more cations selected from groups 8, 9, 10 and 11 of the periodic table, and wherein the catalyst precursor is reduced in the presence of hydrogen in the reactor vessel into an unsupported hydrogenation catalyst.
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公开(公告)号：US20130071900A1
公开(公告)日：2013-03-21
申请号：US13624308
申请日：2012-09-21
Applicant: SHELL OIL COMPANY
Inventor： Munro MACKAY , Evert VAN DER HEIDE
CPC classification number: C12P19/02 , C12P7/10 , C12P7/16 , C12P19/14 , C12P2201/00 , C12P2203/00 , D21C3/04 , D21C5/00 , Y02E50/10 , Y02E50/16 , Y02E50/17
Abstract: Calcium-containing lignocellulosic material is converted at a temperature in the range from equal to or more than 120° C. to equal to or less than 210° C. with an aqueous acid solution containing one or more inorganic acids and having a pH in the range from equal to or more than 1.8 to equal to or less than 4.0 to produce a mixture, containing pretreated lignocellulosic material and aqueous acid solution, having an overall pH in the range from equal to or more than 3.0 to equal to or less than 4.5. The process allows reduction in the formation of insoluble salts.
Abstract translation: 含钙木质纤维素材料在含有一种或多种无机酸的酸性溶液的水溶液中在等于或大于120℃至等于或小于210℃的温度下进行转化， 范围等于或大于1.8至等于或小于4.0，以产生含有预处理的木质纤维素材料和酸水溶液的混合物，其总pH在3.0至等于或小于4.5的范围内 。 该方法允许减少不溶性盐的形成。
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公开(公告)号：US20220033331A1
公开(公告)日：2022-02-03
申请号：US17277261
申请日：2019-09-10
Applicant: SHELL OIL COMPANY
Inventor： Dionysius Jacobus Maria DE VLIEGER , Pieter HUIZENGA , Munro MACKAY , Lucas Petrus Simon KEYZER , Duraisamy MUTHUSAMY
IPC: C07C29/132 , B01J23/30 , B01J19/00 , B01J8/00
Abstract: The invention provides a shut down method for a process for the preparation of glycols from a starting material comprising one or more saccharides in the presence 5 of hydrogen and a catalyst system comprising one or more retro-aldol catalysts comprising tungsten and one or more catalytic species suitable for hydrogenation in a reactor, said method comprising removing the one or more retro-aldol catalysts from the reactor whilst also in the presence of one or more agents suitable to suppress tungsten precipitation.
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公开(公告)号：US20180273453A1
公开(公告)日：2018-09-27
申请号：US15763470
申请日：2016-09-27
Applicant: SHELL OIL COMPANY
IPC: C07C29/132 , C07C29/60 , B01J25/02 , B01J31/22 , B01J23/30
CPC classification number: C07C29/132 , B01J23/30 , B01J25/02 , B01J31/2239 , C07C29/60 , Y02P20/52 , C07C31/202 , C07C31/205
Abstract: A process for the preparation of glycols from a saccharide-containing feedstock having the steps of: (a) preparing a reaction mixture in a reactor vessel comprising the saccharide-containing feedstock, a solvent, hydrogen, a catalyst component with retro-aldol catalytic capabilities and a first hydrogenation catalyst comprising an element selected from groups 8, 9 and 10 of the periodic table; (b) monitoring the hydrogenation activity in the reactor vessel; (c) when the activity of the first hydrogenation catalyst declines, as indicated by the crossing of a threshold, supplying into the reaction mixture in the reactor vessel a catalyst precursor comprising one or more elements selected from groups 8, 9, 10 and 11 of the periodic table; and (d) converting the catalyst precursor in the presence of hydrogen in the reactor vessel to a second hydrogenation catalyst to supplement the declined hydrogenation activity in the reactor vessel.
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