CTST—F1复合塔板流体力学性能研究.pdf

河北工业大学
硕士学位论文
CTST—F1复合塔板流体力学性能的研究
姓名:吕娜
申请学位级别:硕士
专业:化学工程
指导教师:刘继东
20080501
河北工业大学硕士学位论文
CTST—F1 复合式塔板流体力学性能的研究

摘要

CTST 塔板和 F1 浮阀塔板都是性能较好的塔板,有各自的适用范围。而 CTST-F1
复合塔板是将两者复合,得到的新型塔板。对其流体力学性能的测定和评价,可以为优化
和改进其结构提供经验和理论依据。
采用空气-水物系,在直径为 570mm 的有机玻璃冷模实验塔中,对 CTST-F1 复合
塔板的流体力学性能进行研究。当板上液体自 F1 浮阀区流向 CTST 区时,平均清液层高
度较高,液层梯度较小。在相同气速和清液层高度下,CTST-F1 复合塔板的板压降大于
CTST 的,小于 F1 浮阀塔板的。CTST 区的开孔面积越大,CTST-F1 复合塔板的板压降
越小,浮阀打开时的临界气速就越大。CTST-F1 复合塔板的气相负荷上限高于 F1 浮阀
塔板;漏液线比 CTST 塔板和 F1 浮阀塔板都低;操作弹性较大,与 CTST 塔板的相接近。
对 CTST-F1 复合塔板的板压降进行了理论分析,建立了计算板压降的半经验半理论
公式,计算结果与实验数据吻合较好,推导出估算相对雾沫夹带量的数学方法,可以用来
估算气相负荷上限。

关键词:CTST,浮阀塔板,复合塔板,流体力学性能,板压降








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CTST-F1 复合塔板流体力学性能的研究
STUDY ON HYDRODYNAMICS PERFORMANCE OF
CTST-BINATION TRAY


ABSTRACT

CTST and F1 floating valve tray are all excellent trays, with advantages and disadvantages
respectively. CTST-bination tray is a sort of new type tray, composed of CTST and F1
floating valve. The hydrodynamic behaviors of the CTST-bination tray was measured
and valued, which woud provide experimental and theoretical dependence for the structure
improvement of the CTST-bination tray.
The hydrodynamic behaviors of this CTST-bination tray was studied with
air-water system in the cold model column with inside diameter of 570mm. In the condition of
the liquid flowing from F1 floating valve area to CTST area, the mean clear liquid height is
higher, and gradient of liquid level is smaller. With similar gas rate and mean clear liquid height,
pressure drop of the CTST-bination tray is higher than that of CTST, and lower than
that of F1 floating valve tray. The more the free area of CTST is, the lower the pressure drop is
and the higher the valve hole critical gas rate is. The gas loading upper limit of CTST-F1
combination tray is higher than that of F1 floating valve tray. The gas loading lower limit is
lower than that of both F1 floating valve tray and CTST. The ope