The condenser is sometimes placed above the top of the column and the reflux pump and accumulator are omitted .

有时可将冷凝器置于精馏塔 上部， 省去 回流泵和储槽。

Inside the desulfurizer and at its top employed is a special reflux construction design . With the realization of internal circulation of materials inside the desulfurizer the concentration at the inlet of dust removal device has been reduced .

脱硫塔内部及 顶部采用了特殊 回流结构设计，实现物料塔内内循环，减少除尘装置入口浓度。

The results of simulation calculation and the analysis of operation sensitivity showed that the primary influence factors on separation accuracy of the tower were the top product output and the next was the plate efficiency and reflux ratio .

模拟计算结果及对操作灵敏度的分析表明： 塔顶产出量对丙烯精馏塔分离精度的影响最明显，其次是塔板效率和 回流比；

The results show that the top concentration of 1-hexene increases and the reflux ratio of 1-hexene slowly decreases with the increase of the reflux rate .

试验得出随着 回流比的增加， 塔顶1-己烯浓度增大，而1-己烯的收率有缓慢下降的趋势。

Through the research of the phase equillibrium in different top dividing layer reflux temperature the writers found that the layer temperature can make a notable impact on dehydrate efficiency energy consumption and steadiness of operation .

通过对不同 塔顶分层 回流温度下相平衡的研究，提出分层温度对装置脱水效率、能耗和运行稳定性的重要影响。

Accompanying with the salt deposition there were inflexible adjustment of fractionator top temperatures cavitation in top circulating reflux pump production of light gas oil with substandard flash point as well as difficult drawing out from the column etc.

结盐时伴随有塔顶温度调整不灵活， 塔顶循环 回流泵抽空和轻柴油闪点不合格和抽出困难等现象。

Mixing of flowing liquid in top vessel with batch distillation under total reflux

全 回流间歇精馏 塔顶贮槽内液体流动时的混合

The reboil ratio and top reflux were increased by 4.5 % and 29.3 % by utilizing bottom reboiler of toluene column made of sintered porous surface tubes .

甲苯塔采用烧结型表面多孔管再沸器后，再沸比和 塔顶 回流量分别增加了4.5%和29.3%。

Furthermore the effects of tower top pressure temperatures of tower top and bottom reflux ratio on product purity were analyzed .

同时探讨了塔顶压强、 塔顶和塔釜温度、 回流比变化对产品纯度的影响，获得了试验条件下的 最佳 操作条件。

Based on the simulation results a binary distillation column was proposed in this paper an analysis for the process was performed and the correlation variables between the two towers the top flow rate from the high pressure tower and its reflux were determined .

在此基础上，提出了苯－甲苯的并流型双效精馏流程，并对该流程进行了工艺分析，确定了高压塔塔 顶采出量及 回流 比为两个塔的协调变量。