高温气冷堆耦合碘硫循环制氢的经济性研究  

Economic Study of High Temperature Gas-cooled Reactor Coupled with Iodine-sulfur Cycle for Hydrogen Production

作　　者：倪航 曲新鹤 彭威 赵钢[1,2] 张平 NI Hang;QU Xinhe;PENG Wei;ZHAO Gang;ZHANG Ping(Institute of Nuclear and New Energy Technology,Advanced Nuclear Energy Technology Cooperation Innovation Center,Key Laboratory of Advanced Nuclear Engineering and Safety of Ministry of Education,Tsinghua University,Beijing 100084,China;Tsinghua University-Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学核能与新能源技术研究院,先进核能技术协同创新中心,先进反应堆工程与安全教育部重点实验室,北京100084 [2]清华大学-张家港氢能与先进锂电技术联合研究中心,北京100084

出　　处：《原子能科学技术》2022年第12期2554-2563,共10页Atomic Energy Science and Technology

基　　金：国家重点研发计划(2020YFB1901604);中核集团“青年英才”项目。

摘　　要：经济性是核能制氢工艺关注的重要方面。本文运用HEEP软件对高温气冷堆耦合碘硫循环的核能制氢工艺进行了经济性分析,基于HEEP软件的特点与功能、计算原理分析了制氢厂能量供应方式、制氢效率等技术参数和运行时间、资本成本、贴现率、借款利率等时间和经济参数的影响。研究结果表明,采用核电厂为制氢厂热电联供与核电厂只供热而由外部电网供电相比经济性更好。通过优化碘硫循环制氢工艺的热交换网络,降低制氢工艺耗热量,可提高制氢效率,从而降低氢气的平准化成本。此外,延长核电厂运行时间、降低核电厂和制氢厂的资本成本、降低贴现率和借款利率有利于提高经济性。最后,比较了几种制氢工艺的经济性,在征收300$/t CO_(2)税的情况下,高温气冷堆耦合碘硫循环制氢的氢气平准化成本最低。综合来看,高温气冷堆耦合碘硫循环制氢是较清洁且具有经济前景的制氢工艺。As a clean energy carrier with high heating value, hydrogen is expected to play an increasingly important role in future energy supply. In the long term, nuclear energy can meet the demand for clean, efficient and large-scale hydrogen production. The very high temperature gas-cooled reactor can provide high-temperature process heat and is suitable for nuclear hydrogen production. The iodine-sulfur cycle is a thermochemical water-splitting cycle, and is considered to be the most suitable for coupling with high temperature gas-cooled reactors to produce hydrogen. Currently, there are many technical researches on nuclear hydrogen production, but few economic researches. Economy is also an important aspect of nuclear hydrogen production. The economic analysis of nuclear hydrogen production has important guiding significance for further technical research and engineering construction. The present study uses hydrogen economic evaluation program(HEEP) to economically analyze the hydrogen production process of high temperature gas-cooled reactor coupled with iodine-sulfur cycle. Firstly based on the features and functions, and calculation principles of HEEP, the levelized cost of hydrogen production was calculated by HEEP according to the discounted cash flow method. The lower the levelized cost of hydrogen production, the better the economic effect. Then the influence of technical parameters and chronological and economic parameters was analyzed. The results show that it is more economical to use nuclear power plants as the combined heat and power supply for hydrogen production plants than to use nuclear power plants only for heat supply while the power is supplied by external power grid. By optimizing the heat exchange network of the iodine-sulfur cycle, the heat consumption of the hydrogen production process can be reduced, the hydrogen production efficiency can be improved, and the levelized cost of hydrogen production can be reduced. When the hydrogen production efficiency increases from 42.0% to 50.4%, the levelize

关 键 词：核能制氢 高温气冷堆 碘硫循环 经济性研究 平准化成本 

分 类 号：TL334[核科学技术—核技术及应用]