In order to provide the necessary temperature driving force for the heat to be transferred from the rectifying section to the stripping section, the former must be operated at a higher pressure than the latter. 为了提供传热必须的推动力,精馏段将在较高的压强下进行操作,为了调整压强,两段之间安装了压缩机和调节阀;
For the directional profile of double build double hold, it is very critical to hit the multi target and small size target after controling inclination change in the first hold section and rectifying the azimuth before drilling the second building section. 而双增双稳剖面定向井,控制好第一稳斜段井斜变化和第二增斜段钻进前调整方位,对准确命中多目标、小靶区很重要;
The up gas stream of rectifying section was small and reflux ratio was near minimum reflux ratio that brought on the formation of concentration constant zone closed to charge plate. 精馏段上升气流较小,回流比接近最小回流比,导致在进料板附近形成恒浓区。
On calculation of theoretical number of plates of rectifying section 关于精馏段理论板数的计算
By analyzing the relationship between the gas component and its explosion limit at each theoretical plate in the low-temperature distillation tower, it presents the distillation tower structure with a low-temperature distillation stripping section and a reboiler, and without a rectifying section and a condenser. 分析了低温精馏塔内部不同理论塔板上气相组分变化与爆炸极限的关系,提出了低温精馏塔采用只有提馏段和再沸器,没有精馏段和冷凝器的结构。