• 辐射防护方法 •

### 安全壳过滤排放系统文丘里洗涤器除碘性能分析

1. 1.中国辐射防护研究院,太原 030006;
2.三门核电有限公司,浙江 三门 317100
• 收稿日期:2021-08-16 出版日期:2022-11-20 发布日期:2023-01-05
• 作者简介:王稹(1989—),男,2013年本科毕业于成都理工大学核工程与技术专业,2016年硕士毕业于新疆大学核技术及应用专业, 助理研究员。E-mail:15035169971@163.com
• 基金资助:
中国辐射防护研究院院基金项目(YJ18000603)。

### Analysis of iodine-removing performance of venturi scrubber in containment filtration and discharge system

WANG Zhen1, ZHANG Jirong1, BAI Dongjin2, MIAO Qiyuan2, LI Yongguo1, REN Hongzheng1, WANG Jia1, ZHANG Yuan1, QIU Dangui1, HOU Jianrong1

1. 1. China Institute for Radiation Protection, Taiyuan 030006;
2. Sanmen Nuclear Power Co. Ltd., Zhejiang Sanmen 317100
• Received:2021-08-16 Online:2022-11-20 Published:2023-01-05

Abstract: In this paper, the operation conditions of Venturi scrubbers in nuclear power plants is simulated with a CFD numerical simulation method. The influence of the change of air flow velocity and system pressure on the ejection volume was analyzed. Combined with the experiment method, the influence of the ejection capacity of the Venturi scrubber on iodine removal efficiency was discussed, and some guiding suggestions for the discharge conditions of the containment filtration and discharge system of a nuclear power plant were put forward. The results show that increasing air flow velocity can increase the injection amount, and the injection amount presents an approximate linear growth relationship. Meanwhile, the pressure difference between the inside and outside of the suction tube presents an approximate parabola law. The iodine removal efficiency of the system is consistent with the increasing trend of the injection amount in the initial stage, and then tends to be stable after the injection amount reaches a certain level. In order to ensure a high iodine removal efficiency, the exhaust air flow of the system should be kept above 3 300 m3/h. In the range of 0.1 to 0.5 MPa system pressure, the iodine removal efficiency can be maintained at a high level. The increase of pressure is helpful to the increase of ejection capacity, and the increase is more obvious in the high flow area.

• TL75