活性炭延迟床设计计算

Design Calculation of Carbon Delay Bed

分析某三代核电厂放射性惰性气体的来源和运动模式,重点分析了Kr和Xe等放射性核素经由活性炭的延迟滞留状态,提出了通过计算放射性年释放量确定延迟时间和活性炭用量的设计方法;根据ANSI55.4推荐的处理流速和设计原则确定了床体外形尺寸。通过对比分析国外某公司的应用数据,本文的计算结果与之基本吻合,证明了本文方法的合理性。

Based on the third generation nuclear plant, the radioactive noble gas from core fission and the model of the gas movement in the waste gas system are analyzed, focusing on the delay state analysis of the isotopes of Kr and Xe creeping through the activated carbon. This paper gives a calculation method to determine the carbon mass and the system holdup time by annual radioactive release. The dimensions are determined based on the flow velocity recommended in ANSI55.4. By comparing the delay bed dimensions parameters of a certain nuclear corporation, the results by this method are consistent with them, which proved that the calculation method and the assumlation in this l^alaer are reasonable.