Modular Testing of Dinitrogen Oxide (Nitrogen Hemioxide) Catalytic Decomposition Technology for Off-Gas Cleanup Systems for Brest Spent Nuclear Nitride Fuel Reprocessing

被引：0

作者：

Kulyukhin, S. A. ^{[1
]}

Bessonov, A. A. ^{[1
]}

Rumer, I. A. ^{[1
]}

Ustinov, O. A. ^{[2
]}

Voskresenskaya, Yu A. ^{[2
]}

机构：

[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, IPCE RAS, Moscow, Russia

[2] Bochvar High Technol Res Inst Inorgan Mat VNIINM, Moscow, Russia

来源：

ATOMIC ENERGY | 2019年 / 127卷 / 02期

关键词：

Nitrides - Alumina - Aluminum coatings - Aluminum oxide - Nitrogen removal;

D O I：

10.1007/s10512-019-00592-4

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Dinitrogen oxide N2O (nitrogen hemioxide) is one of the harmful components of the off-gases during the reprocessing of spent nitride fuel. It enters the gas phase during the dissolution of nitride fuel in nitric acid and denitration of high-activity raffinate or the bottom solution from the evaporation of intermediate-level wastes. The preferred method of neutralizing it is high-temperature catalytic decomposition. Compositions based on gamma-aluminum oxide coated with catalysts were found previously. One of the compositions was checked on a semi-industrial setup. The efficiency of N2O decomposition was studied as a function of temperature. It was established that almost complete decomposition occurs at 465-480 degrees C. The specific rate of N2O decomposition at 425-480 degrees C was found as a function of the initial concentration. It is shown that for constant initial concentration of N2O the specific decomposition rate is almost the same in the investigated temperature interval.

引用

页码：99 / 104

页数：6