The Synthesis Of L-tyrosine Derivative Gels And Performance Research

Styrene is an important basic organic chemical material.With the increasing emphasis on environmental protection and energy utilization in China,the rational use of energy in the process of styrene production has become a major subject for scholars to study.According to this theme,this paper is based on the actual production situation of a factory in Shandong,to simulate the ethylbenzene/styrene process and optimize the use of energy.In this paper,we use Aspen Plus software to simulate the production process.After analysing the simulation results.After analysing the existing device utility consumption situation of each unit,we point out the problem that the amount of high-pressure steam is high and generated steam level is unreasonable in styrene production unit.Using pinch point design method to optimize and design the heat exchanger network.Comparing the design schemes that Aspen Energy Analyzer software provides,from two aspects of overall and single stream to analyse that the No.2 heat exchanger network design scheme is more reasonable.After analysing the optimized heat exchanger network,the paper concludes that the smallest change program:Firstly the dehydrogenation gas exchanges heat with inlet steam of super-heater F-301;Secondly it exchanges heat with the tower kettle liquid branch of ethylbenzene recovery tower of T-402,the program need to add two heat exchangers.The optimized heat exchange network can save 6.59×10~7 kJ/h total utility consumption,and can reduce the 1.8 million yuan a year in public utility investment cost,the effect is significant.Optimize the exhaust gas compressor to save energy in exhaust gas treatment part.The optimization scheme is adding a new heat exchanger of E-X,after cooler of E-306 to exchange the mixture heat,to reduce the gas handling capacity,thereby reducing the load of compressor and energy consumption.After simulating and comparing,the temperature of the heat exchanger is set to 24?.The final simulation result shows that after setting the E-X,the compressor power decreased by 419.68 kW,and it can save 3.35 million yuan of equipment investment costs,the effect is significant.