Study On Tubular Reactor For Strong Exothermic Reaction And Its Application

In the synthesis process of energetic compounds,the reaction system consists of a large number of compounds,which are highly corrosive,flammable and explosive.If the reaction heat cannot be removed in a timely and effective manner,it is easy to cause a safety accident and even cause casualties.Tubular reactor is the core equipment of the synthesis process of an energetic compound,and its performance has a great influence on the reaction results.In this paper,experimental research is carried out on a tubular reactor for strong exothermic reaction,and the process design of the tubular synthesis process for an energetic compound is carried out.The main work included as follow:(1)Three four-start spirally corrugated tube is subjected to hydrodynamic and heat transfer testing.The resistance coefficient and Nusselt number at different flow rates are calculated.New f correlation was proposed based on Moody equation.New Nu correlation was proposed based on Ditus-Boelter equation.(?)(2)The experimental device for investigating the residence time distribution of the tubular reactor is designed and constructed.Pulse response method is selected to detect the residence time distributionl.The conductivity at the exit of the tubular reactor is detected and recorded.The residence time distribution function is obtained.The effect of inlet flow rate on the residence time distribution of the tubular reactor is investigated.(3)The amplification rules of the tube reactor are proposed based on the summary of the experimental data of the step-by-step amplification and the characteristics of the synthesis process of an energetic compound.The design process of the tubular reactor is established.The basic functional framework of tubular reactor design software is conceived.(4)Refer to the design specifications of the tubular reactor,the 5 kg-level tubular synthesis process of the energetic compound is designed.The main process equipment such as the tubular reactor and the overflow kettle reactor is designed as well.The process flow chart of related processes is finished.The reaction temperature and reaction time were optimized via simulation.