三室蓄热式热力氧化炉热工性能数值模拟研究  

NUMERICAL SIMULATION OF THERMAL PERFORMANCE OF THREE-CANISTER REGENERATIVE THERMAL OXIDIZERS

作　　者：孙雁伯 袁兴海 林琳 王子硕 SUN Yanbo;YUAN Xinghai;LIN Lin;WANG Zishuo(China Liaohe Petroleum Emgineering Company Limited,Panjin 124010,Liaoning,China;Department of Engineering Mechanics,School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]中油辽河工程有限公司,辽宁盘锦124010 [2]浙江大学航空航天学院工程力学系,杭州310027

出　　处：《力学与实践》2024年第5期1023-1036,共14页Mechanics in Engineering

摘　　要：为了指导辽河油田开采伴生气的处理,针对三室蓄热式热力氧化炉(regenerative thermal oxidizer,RTO)的周期性运行过程开展了数值模拟研究。建立了三室RTO的三维物理模型及非稳态数学模型,分别对不同切换时间、蓄热体高度以及入口流量下的RTO运行过程进行了一个切换周期的非稳态模拟,分析了不同工况下RTO的净化效率、热回收效率和蓄热空气出口温度的变化规律。结果表明,阀门切换周期内的3个阶段热回收效率及放热侧出口温度都随着运行时间逐渐降低;在蓄热体高度为1.2 m、阀门切换周期为180 s的RTO运行工况下,可以兼顾较高的热回收效率与更优的经济效益;进气流量越大,各切换周期下的热回收效率越大,蓄热体放热侧出口温度也越高;各烟气组分在该型RTO的富氧环境中净化效率都保持在99%以上。In order to facilitate the treatment of associated gas in the Liaohe Oilfield,a numerical simulation of the periodic operation process of the three-canister regenerative thermal oxidizer(RTO)was carried out.This work established a three-dimensional physical model and an unsteady mathematical model for the three-canister RTO.Multiple unsteady simulations were performed to analyze the RTO operation process within one switching period,considering different switching times,regenerator heights,and inlet volume flow rates.The variations in purification efficiency,thermal efficiency,and outlet temperature of the regenerator were inves-tigated under different operating conditions of the RTO.The results showed that the thermal efficiency and outlet temperature on the exothermic side gradually decreased with operation time during the three stages of the valve switching period.A balance between higher thermal efficiency and better economic benefits could be achieved under the operating condition of a regenerator height of 1.2 m and a valve switching period of 180 s.Additionally,higher inlet volume flow rates led to increased thermal efficiency and higher outlet temperatures on the exothermic side of the regenerator during each switching period.The purification efficiency of various volatile organic components remained consistently above 99%in the oxygen-rich environment of this type of RTO.

关 键 词：蓄热体 挥发性有机物 热回收效率 净化效率 非稳态模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]