申请人:Ube Industries, Ltd.
公开号:EP2781499A1
公开(公告)日:2014-09-24
The present invention has an object to provide a method for efficiently producing high-purity 1,5-pentanediol by reacting tetrahydrofurfuryl alcohol with hydrogen. This manufacturing method for producing high-purity 1,5-pentanediol comprises: step (I): a step of obtaining a crude reaction product by a hydrogenolysis reaction of tetrahydrofurfuryl alcohol with hydrogen carried out in the presence of a copper-containing catalyst with reaction temperature of 200 to 350°C and reaction pressure of 1 to 40 MPa until conversion rate of tetrahydrofurfuryl alcohol reaches 80% or less; step (II): a step of separating tetrahydrofurfuryl alcohol and crude 1,5-pentanediol (A) from the crude reaction product obtained in the step (I), and then, supplying recovered tetrahydrofurfuryl alcohol as a raw material for the step (I); and step (III): a step of obtaining the high-purity 1,5-pentanediol by distillation of the crude 1,5-pentanediol (A) obtained in the step (II).
本发明的目的是提供一种通过四氢糠醇与氢气反应高效生产高纯度1,5-戊二醇的方法。这种生产高纯度 1,5-戊二醇的方法包括:步骤(I):在含铜催化剂存在下,通过四氢糠醇与氢气的氢解反应获得粗反应产物的步骤,反应温度为 200 至 350℃,反应压力为 1 至 40 兆帕,直到四氢糠醇的转化率达到或低于 80%;步骤(II):从步骤(I)得到的粗反应产物中分离出四氢糠醇和粗1,5-戊二醇(A),然后将回收的四氢糠醇作为步骤(I)的原料;以及步骤(III):通过对步骤(II)得到的粗1,5-戊二醇(A)进行蒸馏,得到高纯度的1,5-戊二醇。