Continuous separation of mixtures containing tetrahydrofuran, gamma-butyrolactone and/or 1,4-butanediol, e.g. from maleic anhydride hydrogenation, uses partitioned or heat-coupled conventional distillation columns

摘要

Continuous distillative separation into at least 3 fractions of mixtures containing tetrahydrofuran (THF), psi -butyrolactone and/or 1,4-butanediol is effected in an arrangement of distillation columns with at least one partition or in an arrangement of heat-coupled conventional distillation columns.