精馏的

Continuous ethanol fermentations with and without recycling of distillage were carried out in two suspended-bed bioreactors,respectively,using two-stage enzymatic hydrolyte of corn powder as medium.

在2个单级悬浮床生物反应器中，以双酶法制备的玉米粉糖化液为底物，进行了废液循环条件下自絮凝颗粒酵母乙醇连续发酵与清液发酵对比实验。对于废液循环实验，每隔5d将收集到的发酵液集中精馏处理，得到的废糟液直接用于玉米粉调浆。

It was also found that R increases with accumulator and condenser holdup. Further studies on the dynamic role of column holdup showed that the ratio of column holdup to reboiler initial charge acts as a factor.

对塔内持液的动态作用规律的深入研究表明：持液量与釜液量之比为一个因子，因此对于一个确定的分批精馏塔，当q0.7时，存在最佳投料量。

Its process mathematical description is illustrated through a typical binary distillation column design. Then the framework and strategy of solving the optimal design and control, which involve the solution of mixed integer dynamic optimization, are presented.

以典型二元精馏塔设计为例阐述了其过程系统的数学描述，给出其最优工艺设计和控制设计的求解框架和求解策略，以及其中混合整数动态优化问题的求解方法。

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate b...

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate by breaking through the limitation of chemical equilibrium for getting high conversion of hydrolysis.

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

It was concluded from the calculation that the results were satisfactory and the ratio of reflux to methyl acetate feed had less influence on the conversion of methyl acetate. It is good guide to the pilot experiment, and can provide the basis for the industrial design.

通过模拟计算得出了增大回流进料比不能有效强化醋酸甲酯水解的催化精馏过程的结论，为中试过程提供了有效的指导，也给工业化提供了依据。

With the increase in capacity, the quondam technology which adopted decomposition in middle pressure and pre-distillation limited the production.

随着生产能力的提高，生产强度的增加，我公司尿素装置原中压分解预精馏工艺的缺陷开始制约生产操作。

Finally, simulate dynamic mathematic model by MATLAB software, and get a series of dynamic curve of Vacuum's sidetrack from feed-in to static state.

最后使用MATLAB对建立的动态数学模型进行仿真，得到一系列侧线油组分浓度变化的过渡过程曲线，从而了解了减压精馏塔的动态特性。

Using benzyl chloride and chlorine as starting materials, benzal chloride is prepared through photo-chlorination in loop reactor.

采用环流反应器、以氯化苄和氯气为原料进行光氯化反应，制备苄叉二氯；将制得的苄叉二氯粗品进行真空精馏得到高纯度的精品；然后用一种新型醇胺类相转移催化剂，分别以盐酸和水作为介质，在 90～ 110℃水解后得到了高纯度的苯甲醛。

The synthetic route of glycidyl nitrate was improved. Glycidol was synthesized by the cyclization process from allyl alcohol and m-CPBA, then glycidyl nitrate was synthesized with glycidol as raw materials and HNO3/ 2O as nitrating agent.

为了改进缩水甘油醚硝酸酯的合成路线，以丙烯醇为原料，经间氯过苯甲酸环氧化后得到缩水甘油醇，然后GA经硝酸／醋酐硝化后得到了GN，硝化产物GN的收率为70.2%，经过减压精馏后GN的纯度达到了98.9%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。