Effect of Liquid Injection Arrangements on Injection Flow Rate of a Laboratory-Scale Venturi Scrubber

Frontiers in Energy Research

Chen, Bo¹  Li, Jishen²  Shi, Kaiyi³  Zheng, Guangzong⁴ 

[1] China Institute of Atomic Energy, China;China Nuclear Power Engineering Co., Ltd., China;Department of Chemistry and Chemical Engineering, LiuPanshui Normal University, China;Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, China

关键词: Injection flow rate;    Filtered containment venting system;    FCVs;    injection arrangement;    Venturi scrubber;   

DOI  :  10.3389/fenrg.2019.00051

学科分类：能源（综合）

来源: Frontiers

【 摘 要 】

As the core device of a filtered containment venting system(FCVS), Venturi Scrubber is an efficient device to scrub the radioactive gases and aerosols before release into the atmosphere. The design concept of Multi-Venturi Scrubber System makes the laboratory-scale venturi scrubber research more valuable. This paper studied the injection flow rate of Venturi Scrubber in different injection arrangements. The liquid is injected horizontally and vertically to the throat at different radial position of i) at the wall of throat, ii) at the half radius of throat, and iii) at the center of Venturi Scrubber throat with a nozzle of diameter 4mm. Throat gas velocities range from 0 to 190 m/s. A constant level water tank was installed to keep water level constant during the injection process. The results showed that liquid injection modes significantly affect the injection performance. The arrangements of straight tube at center and elbow tube at center had larger injection flow rate among the others, and the injection flow rate increased as the throat gas velocity increased. The conventional wall opening (ie, straight tube at the wall) injection method had the worst injection performance. This study provides a valuable reference for the liquid injection arrangement and structural design of the Venturi Scrubber.

【 授权许可】

CC BY