吸收塔内气液分离折流板除雾器实验研究  

Experimental study on gas-liquid separation baffle plate demister in absorbing tower

作　　者：刘宏宇 王建军[1] 白翔宇 金有海[1] 刘帅 Liu Hongyu;Wang Jianjun;Bai Xiangyu;Jin Youhai;Liu Shuai(School of Chemical Engineering, China University of Petroleum (East China),Qingdao, Shandong 266580)

机构地区：[1]中国石油大学(华东)化学工程学院

出　　处：《炼油技术与工程》2019年第9期22-26,共5页Petroleum Refinery Engineering

摘　　要：实验研究了不同操作参数、结构参数对除雾器阻力特性、除雾效率及除雾器出口粒径分布的影响规律。同时通过高速摄影流动显示技术对折流板除雾器基本分离规律进行分析。实验结果表明:折流板除雾器基本分离规律可归结3种情况:①液滴跟随气流直接逃逸;②液滴撞击在折流板叶片迎风面直接被捕捉;③液滴撞击到折流板叶片后产生破碎,部分液滴被折流板叶片捕集,部分液滴随气体逃逸出分离器;折线形折流板受截面气速影响最小,临界气速可达到5.3m/s,但出口液滴粒径偏大;夹角越小分离效率越高,但分离效率对截面气速的敏感性越高,同时在合适气速下,出口液滴粒径较小。The effects of different operating parameters and structural parameters on the resistance characteristics, demisting efficiency and particle size distribution of the demister outlet are studied experimentally. At the same time, the basic separation law of baffle demister was analyzed by high-speed photographic flow display technology. The experimental results show that the basic separation law of the baffle gas-liquid separation baffle can be summed up in three cases:①Droplets escape directly with gas flow;②Droplet impact is captured directly on the windward side of baffle blade;③When droplets hit the baffle and break up, some are trapped by the baffle blades, and some escape from the separator with gas. The polygonal-shape baffle is minimally affected by the cross-section gas velocity, and the critical gas velocity can reach 5.3 m/s, but the outlet droplet size is larger;the smaller the angle, the higher the separation efficiency, but the higher the sensitivity of the separation efficiency to cross-section gas velocity. At the same time, the outlet droplet size is smaller at the appropriate gas velocity. The research results have important guiding significance for the optimization of demister.

关 键 词：折流板 除雾效率 含液率 液滴粒径分布 

分 类 号：TQ051[化学工程]