树脂超临界水氧化反应器设计及数值模拟

辐射防护 ›› 2019, Vol. 39 ›› Issue (5): 416-422.

树脂超临界水氧化反应器设计及数值模拟

张志东¹,池翔宇²,潘跃龙¹,何军山¹,王乃华²

1.深圳中广核工程设计有限公司,广东深圳 518000;
2.山东大学热科学与工程研究中心,济南 250061

收稿日期:2018-11-23 出版日期:2019-09-15 发布日期:2019-10-14
作者简介:张志东(1980—),男,2004年大学毕业于河南科技大学化学工程与工艺专业,2007年硕士毕业于兰州大学化学工艺专业,工程师。E-mail:zhangzhidong@cgnpc.com.cn

Design and numerical simulation of a supercritical water oxidation reactor for spent resins

ZHANG Zhidong¹, CHI Xiangyu², PAN Yuelong¹, HE Junshan¹, WANG Naihua²

1.China Nuclear Power Design Company Ltd., Guangdong Shenzhen 518028;
2.Institute of Thermal Science and Engineering, Shandong University, Jinan 250061

Received:2018-11-23 Online:2019-09-15 Published:2019-10-14

摘要/Abstract

摘要： 超临界水氧化技术是处理废树脂的途径之一,能够快速、有效处理核电站产生的含放射性核素的废离子交换树脂。本文提出了一种新型的超临界水氧化反应器,并采用计算流体动力学方法,建立了以多孔介质模型为基础的树脂颗粒非均相反应与均相反应耦合的反应器模型,对其中的流动、换热及化学反应过程进行了数值模拟研究。结果表明,各工况下有机物均完全转化为二氧化碳,各工况均能满足生产要求;随加热功率增加,反应物料出口温度、流域最高温度、压降与出口速度均逐渐增加。

关键词: 超临界水氧化, 反应器, 数值模拟, 非均相反应

Abstract: Supercritical water oxidation offers a viable treatment for ion exchange resins. A novel reactor coupled with heterogeneous chemical reaction and homogeneous chemical reaction is proposed, and a numerical model of this reactor based on porous media model has been established by a computational fluid dynamics method. The flow, heat transfer and chemical reaction processes in the reactor have also been investigated. Results show that organic materials are completely degraded under all working conditions and the production requirements have all been met. The outlet temperature, the maximum temperature of the fluid zone, pressure drop and outlet velocity would gradually increase with the increase of heating power.

Key words: supercritical water oxidation, reactor, numerical simulation, heterogeneous reaction

张志东,池翔宇,潘跃龙,何军山,王乃华. 树脂超临界水氧化反应器设计及数值模拟[J]. 辐射防护, 2019, 39(5): 416-422.

ZHANG Zhidong, CHI Xiangyu, PAN Yuelong, HE Junshan, WANG Naihua. Design and numerical simulation of a supercritical water oxidation reactor for spent resins[J]. RADIATION PROTECTION, 2019, 39(5): 416-422.

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