The steady-state and dynamic simulation of cascade distillation system for the production of oxygen-18 isotope from water

Yunhu Gao; Zhihong Xu; Kejing Wu; Xiaolu Wang; Zhaojun Yu; Weiyang Fei

doi:10.1016/j.cjche.2016.03.001

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The steady-state and dynamic simulation of cascade distillation system for the production of oxygen-18 isotope from water

Separation Science and Engineering | Updated：2026-01-06

- The steady-state and dynamic simulation of cascade distillation system for the production of oxygen-18 isotope from water
- Chinese Journal of Chemical Engineering Vol. 24, Issue 8, Pages: 979-988(2016)
- Affiliations：
  
  1. Jiangsu Huayi Technology Co., Ltd.,Jiangsu,China,215522
  2. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University,Beijing,China,100084
  3. China Construction Installation Engineering Co. Ltd,Jiangsu,China,210049
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.03.001
  CLC：
- Published：2016
- Accepted：
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Yunhu Gao, Zhihong Xu, Kejing Wu, Xiaolu Wang, Zhaojun Yu, Weiyang Fei. The steady-state and dynamic simulation of cascade distillation system for the production of oxygen-18 isotope from water[J]. , 2016, 24(8): 979-988.
DOI：

Yunhu Gao, Zhihong Xu, Kejing Wu, Xiaolu Wang, Zhaojun Yu, Weiyang Fei. The steady-state and dynamic simulation of cascade distillation system for the production of oxygen-18 isotope from water[J]. , 2016, 24(8): 979-988. DOI： 10.1016/j.cjche.2016.03.001.

摘要

Abstract

Accurate simulation of water distillation system for oxygen-18 (

O) isotope separation is necessary to guide industrial practice

since both deuterium (D) and oxygen-18 isotope get enriched and interfere with each other. In the present work

steady-state and dynamic distillation models are established based on a classic method and a cascade distillation system with 5 towers is introduced to test the models. The theoretical expressions of separation factor

H/D

for protium/deuterium and separation factor

O.for oxygen-16/oxygen-18 were derived

with the existence of deuterium and oxygen-18

respectively. The results of the steady-state simulation by the classical method proposed in the present work agreed well with the results of the lumping method. The dynamic process could be divided into 5 stages. Impressively

a peak value of product withdraw was observed before the final steady state

which was resulted from the change of

O separation factor and isotope distribution. An interesting low concentration zone in the towers of T2-T5 existed at the beginning of the dynamic proces

s and it required industrial evidence.

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