加速器驱动次临界钍焚烧堆初步中子学设计与分析  

Preliminary Neutronics Design and Analysis for Accelerator Driven Subcritical Thorium Burning Reactor

作　　者：李原野[1,2] 王明煌 廉超[2] 蒋洁琼[2] 

机构地区：[1]中国科学技术大学,安徽合肥230027 [2]中国科学院核能安全技术研究所,安徽合肥230031

出　　处：《核科学与工程》2017年第6期895-901,共7页Nuclear Science and Engineering

基　　金：国家自然科学基金项目"加速器驱动次临界堆瞬态安全过程与影响机理研究"(91026004);"乏燃料焚烧堆新概念次临界包层长寿命焚烧特性研究"(51406216)

摘　　要：本文针对加速器驱动次临界系统进行钍资源利用的优势,提出了铅基加速器驱动次临界钍焚烧堆(CLEAR-Th)概念。该概念采用钍钚混合氧化物燃料,冷却剂采用液态铅铋,T91钢作为包壳材料和结构材料,初始有效增殖因数keff设计为0.98,1.5GeV能量的质子流强工作在10mA以内,使用大型集成中子学计算与分析系统VisualBUS和混合评价核数据库HENDL进行计算分析。初步结果表明:CLEAR-Th设计实现了稳定焚烧钍产能的设计目标,有望实现稳定的闭式钍铀燃料循环,并具有长寿命次锕系物质生成量低、固有安全性良好等特点。In view of combining the advantages of thorium with accelerator driven subcritical system, the concept of Accelerator Driven Subcritical Thorium Burning Reactor（CLEAR-Th）was put forward in this paper. CLEAR-Th is fueled with thorium- plutonium mixes oxide and cooled by LBE. T91 steel is used as cladding and structure material. The koff is set as 0. 98 at the beginning of fuel cycle（BOC）. The accelerator proton（1.5 GeV）beam current is limited to a maximum of 10 mA. Preliminary neutronics design analyses were performed on it by using multi-functional 4D neutronicssimulation system VisualBUS and hybrid evaluated nuclear data library HENDL. The preliminary results showed that the primary design goal of stable energy production though burning thorium has been achieved. Based on this design, stable closed Th-U fuel cycle can be achievable. CLEAR-Th is also featured with low production of long- lived minor actinides and good inherent safety.

关 键 词：钍 加速器驱动次临界系统 中子学 

分 类 号：TL32[核科学技术—核技术及应用]