| 摘要 |
The present invention provides an integrated process for continuously preparing 1,4-butanediol, which comprises the following stages: (I) reacting formaldehyde with acetylene in the presence of a copper catalyst at a pH of from 5 to 8 and a molar ratio of formaldehyde to acetylene of at most 2:1, (II) intermediately buffering the resulting butynediol-containing aqueous mixture for from 0.1 to 100 h, (III) hydrogenating the mixture obtained after the intermediate buffering and (IV) distilling the hydrogenation product obtained in stage III to obtain 1,4-butanediol. |
