乏燃料在加速器驱动的次临界模块式HTGR中的燃烧  

Burning of spent fuel of an accelerator-driven modular HTGR in sub-critical condition

作　　者：经荥清[1] 杨永伟[1] 常鸿[1] 吴宗鑫[1] 古玉祥[1] 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第5期646-647,658,共3页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"基础研究项目 ( G19990 2 2 6 0 1)

摘　　要：环状模块式高温气冷堆 (HTGR)采用包覆颗粒燃料 ,其乏燃料经过一段时间的堆外冷却后 ,可以再利用。研究了 35 0 MW环状模块式 HTGR乏燃料在加速器驱动的次临界堆中燃烧的物理可行性。给出了功率为 30 MW次临界堆概念设计 ,利用 MCNP程序模拟中子在次临界堆内的输运过程 ,利用 ORIGEN2程序进行燃耗计算。结果表明 :加速器驱动的次临界气冷堆具有可靠的次临界度和低的功率密度 ,用于燃烧 35 0 MW环状模块式 HTGR乏燃料 ,从能源利用的角度考虑 ,可以获得约 2 0The modular high temperature gas cooled reactor (MHTGR) has good safety characteristics because of the use of coated particles in the fuel element. After the particles cool outside of the reactor for some time, the spent fuel can be reutilized. This paper describes a physics feasibility study for the burning of spent fuel from a 350 MW ring-shaped modular high temperature gas cooled reactor in an accelerator-driven sub-critical reactor. A conceptual design is given for the 30 MW accelerator-driven sub-critical reactor. The neutron transport in the sub-critical reactor was simulated using the MCNP code, and the burnup was calculated using the ORIGEN2 code. The results show that the accelerator-driven sub-critical gas-cooled reactor has reliable sub-criticality and low power density and that the spent fuel from a 350 MW ring-shaped modular high temperature gas cooled reactor can be burned to provide 20% more energy.

关 键 词：环状模块式HTGR 乏燃料 加速器 次临界堆 高温气冷堆 燃耗计算 燃烧热功率 

分 类 号：TL424.27[核科学技术—核技术及应用]