Research On The Fluidization Characteristics Of Three Phase Multistage Biological Fluidized Bed And Carrier

IDA is currently the world’s most advanced glyphosate synthesis process, more than75%of the glyphosate production companies are using this technology in the world. IDA method iminodiacetic acid as raw materials, in the role of a catalyst, the oxidation of double glyphosate (PMIDA). The raw materials of the method easy to get good quality products, high yield, good economic returns, suitable for industrial production.PMIDA oxidation is the final step in this process, is a critical step. Activated carbon catalytic oxidation PMIDA, optimization of process conditions at home and abroad have been many reports. However, the oxidation kinetics research is still at an empty stage. For industrial reactor amplification and optimization of the reaction conditions, the dynamics of the research has important significance.1.1in a1L autoclave, with activated carbon as a catalyst, the catalytic oxidation of low-concentration the PMIDA solution, reaction temperature, reaction pressure, the catalyst concentration, and other process conditions, the influence on the reaction rate. According to the reaction mechanism proposed the main Eigenkinetics equation:Regression analysis of the kinetic data, the results show that the catalytic oxidation reaction PMIDA surface reaction is the rate-determining step, the reactant adsorption is weak. The reaction rate and catalyst concentration, the0.5power proportional relationship of Oxygen pressure. And calculated the reaction activation energy and pre-exponential factor were with3.014×104j/mol, pre-exponential factor of2.150x104.2. Glyphosate reactant, activated carbon as the catalyst, side reactions glyphosate solution is oxidized with oxygen, and explore the the PMIDA oxidation process occurs, i.e. glyphosate oxidation reaction kinetics, to obtain a kinetic modelThe return of the kinetic data were obtained activation energy and pre-exponential factor were8.311×104J/mol,3.370×1010min-1·MPa-0.5.3. Through the establishment of a mathematical model simulating industrial production of a high concentration of20%in the catalytic oxidation of PMIDA to glyphosate process was obtained when the reaction Reaction yield was99%, the reaction conditions of temperature62℃, a pressure of0.5MPa, catalyst concentration of20%.