The regenerative thermal oxidizer (RTO) is widely used in the treatment of volatile organic compounds (VOCs). The RTO with three packed beds has a backflushing process, which makes its operation quite different from common regenerative combustion devices with two beds. However, the published research regarding this kind of RTO was far from sufficient. Thus, models based on an industrial RTO with three beds were developed. Temperature distributions for the RTO were simulated based on the standard k-ε model, heat balance model, DO model, and finite chemical-rate/eddy-dissipation model after model validation. Four operating parameters were selected, and these parameters have a significant impact on key factors, such as the oxidation chamber temperature (OCT), outlet temperature, and thermal efficiency. Multi-factor analysis was performed by orthogonal experiment and regression analysis of the key factors, revealing that different parameters imposed various impacts on the key factors. A linear relationship between the OCT and RTO outlet temperature was identified, yielding a useful formula for engineering applications.Implications: A regenerative thermal oxidizer (RTO) used in volatile organic compounds (VOCs) treatment was studied between engineering and simulation. The simulation results showed a few error compared to the engineering ones. Single parameter simulations, orthogonal experiments and regression analysis were applied to study key factors such as oxidation chamber temperature, outlet temperature, and thermal efficiency. The influence and regularity of the four main operating parameters on the key factors were quite different. The best condition for this RTO was got. The linear formula of the oxidation chamber temperature and the outlet temperature are obtained, respectively.

中文翻译：

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再生热氧化剂处理挥发性有机化合物的关键因素。

再生热氧化剂（RTO）广泛用于挥发性有机化合物（VOC）的处理。具有三个填充床的RTO具有反吹工艺，这使其操作与具有两个床的普通蓄热式燃烧设备完全不同。但是，有关这种RTO的已发表研究还远远不够。因此，开发了基于具有三张床的工业RTO的模型。在模型验证后，基于标准k-ε模型，热平衡模型，DO模型和有限的化学速率/涡流消散模型，对RTO的温度分布进行了仿真。选择了四个操作参数，这些参数对关键因素有重要影响，例如氧化室温度（OCT），出口温度和热效率。通过正交试验和关键因素的回归分析进行多因素分析，结果表明不同的参数对关键因素产生了不同的影响。确定了OCT和RTO出口温度之间的线性关系，从而为工程应用提供了有用的公式。启示：研究了在工程和模拟之间研究用于挥发性有机化合物（VOC）处理的再生式热氧化剂（RTO）。与工程结果相比，仿真结果显示出一些误差。通过单参数模拟，正交实验和回归分析来研究关键因素，例如氧化室温度，出口温度和热效率。四个主要操作参数对关键因素的影响和规律性差异很大。获得此RTO的最佳条件。分别获得了氧化室温度和出口温度的线性公式。