1·Control reflux rate of rectification column.
控制精馏塔回流比，保持流量稳定。
2·A simplified Lewis-Mathson method for seeking the number of theoretical plates in binary rectification column is presented.
本文给出了一种求算二元精馏理论塔板数的简化逐板计算法。
3·The former is a fatal limitation, which is the necessary condition for rectification column operation, and cannot be exceeded in actual design.
而后者属于不可接受限制，是塔板保证传质效果的充分条件，实际设计可结合具体情况适当调整。
4·The dynamic characteristic of concentration change on plates of batch rectification column in no reflux start up process and in no reflux period of pulse operation process have been calculated.
建立了间歇精馏无回流操作过程的数学模型，采用四阶龙格库塔法求解初值问题，计算无回流开工过程及间歇精馏脉动操作过程中无回流周期内各塔板浓度变化的动态特性。
5·This paper introduced briefly developing trend of propylene rectification technology in gas separating unit and analyzed theoretically the middle reboiler used in propylene rectification column.
简述了气分装置丙烯精馏技术的发展趋势，对丙烯精馏塔增设中间重沸器进行了理论分析。
6·Saponification of the acetates produced the respective alcohols. Pure geraniol and nerol were separated by rectification on a highly efficient packed column.
它们的乙酸酯皂化制得相应的醇，通过高效精馏柱精馏使之分离得纯的香叶醇和橙花醇。