| 摘要 |
The present invention relates to a method for producing tetrahydrofuran comprising: feeding raw material 1,4-butanediol containing gamma butyrolactone to a reaction tank, and performing a dehydration cyclization reaction in the presence of a homogeneous acid catalyst having a pKa of 4 or less and being dissolvable in 1,4-butanediol to produce tetrahydrofuran, wherein a gas containing tetrahydrofuran, gamma butyrolactone and water in the reaction tank is introduced into a heat exchanger and when obtaining a condensate from the outlet of the heat exchanger, the ratio of the concentration of gamma butyrolactone in the condensate based on the concentration of gamma butyrolactone in the raw material 1,4-butanediol is from 20 to 100%. |
