Development of non-premixed porous inserted regenerative thermal oxidizer  

作　　者：Jun-chun ZHANG Le-ming CHENG Cheng-hang ZHENG Zhong-yang LUO Ming-jiang NI 

机构地区：[1]State Key Laboratory of Clean Energy Utilization, Zhejiang University

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2013年第9期671-678,共8页浙江大学学报（英文版）A辑（应用物理与工程）

摘　　要：In this study, a porous inserted regenerative thermal oxidizer （PRTO） system was developed for a 125 kW industrial copper-melting furnace, due to its advantages of low NOr emissions and high radiant efficiency. Zirconium dioxide （ZrOz） ce- ramic foams were placed into the combustion zone of a regenerative thermal oxidizer （RTO）. Different performance characteris- tics of the RTO and PRTO systems, including pressure drop, temperature distribution, emissions, and energy efficiency, were evaluated to study the effects of the porous inserts on non-premixed CH4 combustion. It was found that the PRTO system achieved a significant reduction in the NOx emission level and a fuel saving of approximately 30% compared to the RTO system. It is most suitable for a lean combustion process at an equivalence ratio 〈0.4 with NOx and CO emission levels within 0.002%~）.003% and 0.001%q3.002%, respectively.In this study, a porous inserted regenerative thermal oxidizer (PRTO) system was developed for a 125 kW industrial copper-melting furnace, due to its advantages of low NO x emissions and high radiant efficiency. Zirconium dioxide (ZrO2 ) ceramic foams were placed into the combustion zone of a regenerative thermal oxidizer (RTO). Different performance characteristics of the RTO and PRTO systems, including pressure drop, temperature distribution, emissions, and energy efficiency, were evaluated to study the effects of the porous inserts on non-premixed CH4 combustion. It was found that the PRTO system achieved a significant reduction in the NOx emission level and a fuel saving of approximately 30% compared to the RTO system. It is most suitable for a lean combustion process at an equivalence ratio <0.4 with NOx and CO emission levels within 0.002%-0.003% and 0.001%-0.002%, respectively.

关 键 词：Porous media Regenerative thermal oxidizer （RTO） Non-premixed CH4 combustion 

分 类 号：TK16[动力工程及工程热物理—热能工程]