Reaction is carried out under a fractionating column that allows aldehyde to pass but returns alcohol to the reaction vessel . 反應是在裝有分餾柱的反應器中進行的,分餾柱能讓醛通過但使醇回流到反應器中。
2 . vertical dephlegmator 2 .豎式分餾柱
Bituminous mixtures - test methods for hot mix asphalt - bitumen recovery - fractionating column 瀝青混合料.熱混瀝青的試驗方法.瀝青回收.分餾柱
Bituminous mixtures - test methods for hot mix asphalt - part 4 : bitumen recovery : fractionating column 瀝青混合物.熱混合瀝青的試驗方法.第4部分:瀝青回收:分餾柱