高温氦气加热的硫酸分解反应器性能分析  

Performance analysis of sulfuric acid decomposition reactor heated by high temperature helium

作　　者：荣磊 孙铭 夏少军[2] RONG Lei;SUN Ming;XIA Shao-jun(College of Nuclear Science and Technology, Naval Univ. of Engineering, Wuhan 430033, China;College of Power Engineering, Naval Univ. of Engineering, Wuhan 430033, China)

机构地区：[1]海军工程大学核科学技术学院,武汉430033 [2]海军工程大学动力工程学院,武汉430033

出　　处：《海军工程大学学报》2022年第3期7-12,19,共7页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51976235,51606218);湖北省自然科学基金资助项目(2018CF708)。

摘　　要：基于高温气冷堆的热化学硫碘循环制氢是一种具有广阔应用前景的大规模制氢技术,如何对高温氦气流加热条件下的硫酸分解反应器进行热设计与优化是亟待解决的技术问题之一。为此,利用有限时间热力学理论建立了高温氦气加热的管式活塞流硫酸分解反应器模型,分析了反应器热源流动布置方式、结构参数、操作参数对反应器总熵产生率、SO2产率和SO3转化率的影响。结果表明:在相同的热源和反应物进口参数条件下,逆流式反应器相比顺流式反应器SO2产率更高、总熵产生率更低;在所研究的参数变化区间内,增加反应器转化管管径和管长,总熵产生率降低,SO2产率和SO3转化率增大。该研究结果对于实际硫酸分解反应器的最优设计与运行具有一定的理论指导意义。Thermochemical sulfur iodine cycle hydrogen production based on high temperature gas-cooled reactor(HTGR)is a large-scale hydrogen production technology with broad application prospects.How to design and optimize the sulfuric acid decomposition reactor heated by high temperature helium gas flow is one of the key technological problems to be solved.A model of tubular piston flow sulfuric acid decomposition reactor heated by high temperature helium was established by using finite time thermodynamics theory.The effects of flow arrangement,structure parameters and operation parameters on total entropy generation rate(EGR),SO2 yield and SO3 conversion rate were analyzed.The results show that under the same conditions of heat source and reactant inlet parameters,the counter-flow reactor has higher SO2 yield and lower total EGR than the parallel-flow reactor,and that within the range of parameters studied,increasing the diameter and length of the reactor conversion tube reduces the total EGR and increases the SO2 yield and SO3 conversion rate.The obtained results are of certain theoretical significance for the optimal design and operation of actual sulfuric acid decomposition reactor.

关 键 词：有限时间热力学 硫酸分解反应器 熵产生率 SO2产率 SO3转化率 

分 类 号：TK91[动力工程及工程热物理]