Numerical Simulation of Regenerative Thermal Oxidizer

The emission of VOCs (Volatile Organic Compounds, VOCs) during packaging and printing production endangers human health and causes serious pollution to the environment. The regenerative thermal oxidizer is a widely used VOCs processing equipment. In order to fully grasp the law between its structural parameters and treatment effects, this paper numerically simulates the regenerative thermal oxidizer. Firstly, the working principle is analyzed, and the internal structure and 3D modeled are designed. Secondly, the simulation calculation of the regenerator is carried out, and the variation of temperature and pressure inside the regenerator is obtained. Thirdly, according to the simulation results and numerical analysis, the relationship between the pressure drop of the regenerator bed and the bed height, thermal efficiency and bed height under different mesh types is obtained. The results show that when the pore shape and flow rate are the same, the pressure drop is positively correlated with the bed height. The thermal efficiency increases with the increase of the bed height until the thermal efficiency reaches 100%. When the thermal efficiency meets the actual operation requirements, the bed height should be reduced as much as possible to improve equipment utilization.