摘要：The gas-liquid streams in valve columns are likely to surge at low gas velocities, which degrades tray performances and threatens production safety. Therefore, the gas-liquid surging mechanism and vibration properties were investigated in this article. First, the theory of gas-liquid unstable flow at the seal point was proposed based on the principle of lowest energy. Then, the evolution mechanism, gas-liquid flow characteristics, and essential condition of surging are proposed. Meanwhile, experiments were carried out in a phi 580 mm valve column; the frequency spectral and hydraulic characteristics of surging were in accordance with the expected surging mechanism. Moreover, the surging vanish point criterion and safe operating superficial gas velocity for valve columns were advanced. Finally, fundamental models for surging frequency and amplitude were established. The models are in close accordance with the experimental data, which suggests that they could accurately describe the surging behavior.

关键字：energy; frequency spectrum characteristics; fundamental model; gas-liquid surging mechanism; valve column

ISSN号：0001-1541

卷、期、页：在线发表，暂无页码

发表日期：2021-07-01

影响因子：3.518800

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：AICHE JOURNAL

通讯作者：麻羽嘉,尚伟康,李国腾,钟帆,崔潇

第一作者：刘艳升,曹睿,刘拥军

论文类型：期刊论文

论文概要：麻羽嘉,刘艳升,曹睿,尚伟康,李国腾,钟帆,崔潇,刘拥军，Mechanism and fundamental models of gas-liquid surging for valve columns，AICHE JOURNAL，2021，在线发表，暂无页码

论文题目：Mechanism and fundamental models of gas-liquid surging for valve columns