Process Design Of Radix Isatidis Extract Concentration Based On MVR Technology

Mechanical Vapor Recompression(MVR)is the low-quality secondary steam through the compressor temperature rise to high-quality steam.It has the advantages of low evaporation temperature,high thermal efficiency,high degree of automation and low utility facilities.It has great potential in the field of traditional Chinese medicine evaporation.In this paper,through a study of a pharmaceutical company in Nanning,a MVR evaporation and concentration process was designed with reference to the standard pressure vessel(GB150-2011)and heat exchanger(GB151-2014).Taking the evaporation of Banlangen extract as an example,The feasibility of the process is simulated by Aspen Plus software.The main equipment used in the process is selected and the model and parameters of the main equipment are determined.Finally,the performance parameters of the process equipment are simulated.Calculation,and carried out energy conservation and economic analysis.The main contents of this topic are as follows:Firstly,the process of MVR evaporation and concentration was introduced,and the main equipment of the process was introduced.According to the initial conditions,select the appropriate module and the state equation,using Aspen Plus software to simulate the feasibility of the process.Secondly,the main equipment of the system selection calculation,with reference to the relevant standard specifications,to determine the system of major equipment models and parameters.And the connection system of the main equipment of the pipeline were calculated,with reference to pipe standards to determine the size and material of the pipeline.Thirdly,taking the extraction of Radix Isatidis as an example,using the data provided by a pharmaceutical company in Nanning,the main performance parameters of the system were analyzed by mathematical model and the energy efficiency was analyzed by the principle of material balance and heat balance.And the economy was analyzed.The results show that MVR technology has obvious energy saving and economy compared with traditional multi-effect evaporation technology.The work done in this paper can provide some reference for the application of MVR technology in practical industry.