Development of An Isentropic Multi-stage Compressor Module Suitable for Process Simulation
The isentropic multi-stage compressor unit module with multi-flow intermediate stages of inlet and outlet is developed based on domestic chemical process simulation software.Firstly,the mathematical model of multi-stage tandem isentropic compression and intermediate heat transfer,and the solution steps are established,then the isentropic multi-stage compressor module is developed by using object-oriented C++language and COM technology.The actual data of light hydrocarbon recovery unit and rich gas compression in catalytic cracking unit are used to verify the accuracy of module calculation.The results show that the average relative deviations(ARD)of compressor power and condenser heat duty are 0.80％and 0.39％,respectively.The ARD of compressor outlet material composition are 0.77％and 0.73％,respectively.The ARD of compressor outlet material flow and density are 0.15％and 0.46％,respectively.The actual case verification shows that the simulation results match well with the actual industrial values,which indicates that the isentropic multistage compressor module is stable and reliable.It plays an important guiding role in the simulation calculation of gas compression processes in chemical processes.
multi-stage compressorisentropic modelmodule developmentintermediate stage inlet and outlet materials
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