气液并流向下通过脉冲流增强型筛板填料的流体力学研究  

Hydrodynamics of gas-liquid co-current flow down through pulse-flow enhanced sieve packing

作　　者：丁安焱 郝仁杰 谯敏 王松年 范沐易 黄卫星[1] DING An-yan;HAO Ren-jie;QIAO Min;WANG Song-nian;FAN Mu-yi;HUANG Wei-xing(School of Chemical Engineering,Sichuan University,Chengdu 610065,China;Key laboratories of Reactor system design/Thermal hydraulics,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]中国核动力研究设计院中核核反应堆系统设计/热工水力重点实验室,四川成都610213

出　　处：《高校化学工程学报》2022年第2期176-183,共8页Journal of Chemical Engineering of Chinese Universities

摘　　要：为强化堆叠筛板填料中的脉冲流动,从小孔扰动机理出发,在常规堆叠筛板基础上提出了脉冲流增强型筛板。利用高速摄像仪和压力传感器研究了气液两相并流向下通过增强型筛板填料的动力学特征,阐明了操作条件与填料规格对压降、流型及脉冲特性的影响。结果表明,与常规堆叠筛板填料相比,脉冲流增强型筛板填料脉冲流操作条件范围明显变宽,两相流压降降低;同时脉冲流形态分散性更好,脉冲频率明显增大、强度增强。这有助于加强气液两相的相互作用、提高气液传递效率。In order to strengthen the pulse flow in the packing of stacked sieve plates, a pulse flow enhanced sieve plate was proposed with conventional stacked sieve plates based on the small hole disturbance mechanism.High-speed camera and pressure sensor were used to study the dynamic characteristics of gas-liquid two-phase flow down through the pulse-flow enhanced sieve packing. The influence of operating conditions and packing specifications on pressure drop, flow pattern along with pulse characteristics were illustrated. The results show that the pulse-flow enhanced sieve packing has a significantly wider operating condition range of pulse flow,and the pressure drop of the two-phase flow is reduced compared with the conventional stacked sieve plate packing. Meanwhile, the pulse flow morphology is better dispersed, the pulse frequency is significantly increased, and its intensity is enhanced. This study is beneficial to strengthen gas-liquid two-phase interaction and improve gas-liquid transfer efficiency.

关 键 词：筛板填料 气液并流 脉冲特性 脉冲流 

分 类 号：TQ021.1[化学工程]