发明名称 |
Process for the preparation of glycols |
摘要 |
The invention provides a process for the preparation of ethylene glycol and 1,2-propylene glycol from starting material comprising one or more saccharides, by contacting said starting material with hydrogen in a reactor in the presence of a solvent and a catalyst system with catalytic hydrogenation abilities, wherein the process comprises the steps of: i) introducing a first portion of the starting material into the reactor such that the initial concentration of the saccharide in the solvent in the reactor is no more than 2 wt %; ii) allowing at least 90 wt % of the saccharide in the first portion of the starting material to react; iii) subsequently adding further portions of starting material to the reactor over time; and removing reaction product from the reactor. |
申请公布号 |
US9302965(B1) |
申请公布日期 |
2016.04.05 |
申请号 |
US201414781756 |
申请日期 |
2014.04.01 |
申请人 |
Shell Oil Company |
发明人 |
Van Der Heide Evert;Wagle Govinda Subbanna |
分类号 |
C07C29/132;C07C29/00 |
主分类号 |
C07C29/132 |
代理机构 |
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代理人 |
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主权项 |
1. A process for the preparation of ethylene glycol and 1,2-propylene glycol from starting material comprising one or more saccharides, by contacting said starting material with hydrogen in a reactor in the presence of a solvent and a catalyst system with catalytic
hydrogenation abilities, wherein the process comprises the steps of: i) introducing a first portion of the starting material into the reactor such that the initial concentration of the saccharide in the solvent in the reactor is no more than 2 wt %; ii) allowing at least 90 wt % of the saccharide in the first portion of the starting material to react; iii) subsequently adding further portions of starting material to the reactor over time; and iv) removing reaction product from the reactor. |
地址 |
Houston TX US |