回流可以是循环回流或内回流。

Reflux may be either circulating or induced.

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对循环回流量、排出量、残液量控制回路ZT C运算法的执行。

Implementation of Zone Transition control (ZTC) algorithms for Pumparound, Pusharound, and Raffinate control loops.

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文章讲述了常压塔顶循环回流取热的背景、技术改造方案、工艺计算过程和技术经济效果。

The background of its heat recovery, technological reform, process calculation and economic technology effects are described and analysed in this paper.

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