Catalytic Kinetics and CFD Simulation of Multi-Stage Combined Removal of Acrylonitrile Tail Gas

There is no kinetic data and rate equation that can be used directly for catalytic combustion of acrylonitrile tail gas, which causes a need for a multi-stage catalytic kinetic model of collective removal of acrylonitrile tail gas. For the actual application, affected by the internal and external diffusion, we propose a multi-stage combined catalytic kinetic study and a CFD simulation analysis of a collective removal of acrylonitrile tail gas. The reaction network is solved by the matrix transformation. A possible reaction path in the multi-stage combined catalytic reaction network of a collective removal of acrylonitrile tail gas is identified. The materials are used in accordance with the positive carbon ion reaction. For a quantitative calculation of the product distribution, the reaction parameters and dynamic factors are required. These are calculated and determined by the Studio software and the genetic algorithm. An AutoGrid5 automatic grid generator embedded in the Fine/Turbo^TM software package is used to generate the CFD simulation network, and an iterative algorithm is used to calculate the limit value of the CFD simulation. An S-A model is used in the CFD simulation platform to obtain a modified value of the dynamic mathematical model, and the dynamic factors and parameters are brought into it to establish the CA mathematical model of the multi-stage combined catalytic kinetics of the removal of CO from olefine and nitrile tail gas. The experimental results show that the internal and external diffusion effects are observed in the same experimental device and at the same process parameters. The multi-stage combined catalytic kinetic model of a collective removal of acrylonitrile tail gas uses a 10-20 mesh catalyst; the retention time of acrylonitrile tail gas is less than 4.62 s, neither internal nor external diffusion affect the collective removal of acrylonitrile tail gas.