Dynamic Simulation Of Oxidative Section Of Isopropyl Benzene To Phenol And Acetone

Phenol and acetone are important basic raw material for organic synthesis in chemical industry.Phenol-acetone production system,with complicated technological process,strict safety production,high technical requirements for device operation personnel,is the representative of modern industrial production.Chemical simulator is corresponding to the high complexity and strict request in chemical plant,and it can solve the problem of personnel training efficiency and guiding production in chemical plant.Above all,flowsheet simulation is the cornerstone.Beginning with oxidative section of isopropyl benzene to phenol acetone devices,the reaction system configuration is established by analyzing the system components and material balance calculation.By choosing UNIQUAC equation as the calculation method of thermodynamics property,and by using Unisim Design software,the steady-state simulation of oxidative section of isopropyl benzene to phenol acetone was carried out.By calibrating the steady-state simulation results with plant designation parameters,it can be found that the results are accurate enough,with average relative error of 0.54663%and maximum relative error of 1.9646%.It showed that the process simulation is acceptable and can provide reliable parameter data to the dynamic modeling and debugging.This article focuses on the establishment of process dynamic model and its debugging.First the physical and thermodynamic properties data of oxidation process model has been established.Then according to the characteristics of each process unit,the mathematical model of the main equipment such as distillation separation equipment,heat exchanger and reactor,the system structure model of dynamic simulation platform,and the models of process control that was used for driving,running normally and parking of the equipment were established.Finally the dynamic simulation model computational solving was processed.By times of simulation platform running and inprovment,the dynamic mathematical model can well reflect the actual production process of the oxidative section in isopropyl benzene to phenol acetone devices.By verifying,the simulation results basically convergence with the design data of the system,with average relative error of 0.5936%and maximum relative error of 2.1518%.The control system of dynamic mathematical model can effectively control the technological process.And the dynamic mathematical model can complete start-up and shut-down in accordance with the operating manual strictly.The verification results prove that the dynamic mathematical model is accurate and reliable for establishing a simulator by configuration tools.Based on the real plant of 350000 tons/year isopropyl benzene to phenol and acetone,this article carried out the steady-state and dynamic simulation research of the process and successfully established the chemical simulator of phenol-acetone production.The dynamic emulation system has already been used practically for staff training,guiding production and optimizing production.The results showed higher technical level and practical effect in accuracy and reliability aspects.