由于模块式高温气冷堆 (MHTGR)是燃烧 Pu的一种选择 ;Th燃料循环可以限制 Pu的产生和减少高放废物 ,因此研究了在 Th 燃料循环模块式高温气冷堆(PBMHTGR)中燃烧 Pu的物理特性。PBMHTGR初装燃料元件中 Pu的同位素的含量与现行的生产能量堆模块式高温气冷堆 (EPMHTGR)相同 ,考虑反应性的要求 ,加入了2 3 3 U。利用 VSOP程序分析这两个堆的物理特性。结果表明 ,PBMHTGR能够燃烧掉同等功率 6个以上 EPMHTGR产生的 Pu。这表明 ,在 Th燃料循环 MHTGR中 ,燃烧钚是可行的 Since the MHTGR is an option for burning Pu, the Th fuel cycle can limit the generation of Pu and reduce the high-level waste. Therefore, it is studied that the combustion in a Th fuel cycle modular high temperature gas cooled reactor (PBMHTGR) Pu’s physical properties. The content of Pu isotope in PBMHTGR fuel assembly is the same as that of EPMHTGR, and 233U is added in consideration of reactivity. Use the VSOP program to analyze the physical properties of both heaps. The results show that PBMHTGR can burn more Pu generated by more than 6 EPMHTGRs with the same power. This shows that in the Th fuel cycle MHTGR, plutonium burning is feasible