A Study on the N2O Reduction Rate According to Temperature and Residence Time in the Exhaust Gas Atmosphere Emitted on Combustion of Air and Oxygen

Jae Geun Yun, Ji Yeop Kim, Han Min Lee, Gwang Yeol Baik, Min Kyu Jeon, Jin Han Yun, Jung Goo Hong

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

N2O is a hazardous greenhouse gas. It should be reduced to solve global warming problems. In this study, experiments of N2O thermal decomposition were conducted by simulating the exhaust gas atmosphere emitted during the combustion of air and pure oxygen in an actual circulating fluidized bed system and incinerator system. As a result of comparing the N2O reduction rate in N2 and CO2 atmospheres, the N2O reduction rate in the CO2 atmosphere was 20% higher than that in the N2 atmosphere. It is judged that the N2O reduction rate is high in a CO2 atmosphere (exhaust gas from pure oxygen combustion) due to complex factors such as the reverse reaction, the diffusion coefficient, and static pressure-specific heat. Therefore, pure oxygen combustion increases the reduction rate of nitrous oxide. In addition, when operated with an appropriate residence time and temperature, a reduction effect of more than 95% can be expected, and the fuel consumption rate is also expected to improve.

Original languageEnglish
Pages (from-to)3434-3441
Number of pages8
JournalACS Omega
Volume7
Issue number4
DOIs
StatePublished - 1 Feb 2022

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