Analyses And Comparison Of Retrofitting Design Of A CO₂ Compressor With Three Dimensional Flow Computations

CO₂ compressor is key equipment for fertilizer production. The CO₂ compressors that used in the factories of our country were advanced centrifugal compressor imported from foreign country in 1970s. But these compressor are not so advanced in contemporary time, their efficiency and capacity are not enough along with the progress of the industry. These compressors must be retrofitted with modern three dimensional computational flow dynamic technologies.The CFD software of NREC, PREDIG and COMIG, are used to analyses the performance of the first retrofitted compressor, and find out where the problem is. And the same software are also to analyses the second design. Through numerical computation, comparison and selection, a final design is determined. That presents a new way to design CO₂ compressors, and a lot of experiences obtained in such a process. The performance of CO₂ compressors increases a lot at the same time.For every problems that encountered in the retrofitting the CO₂ compressors are summarized in this paper, the solution for those problems are also given in this paper, these information will be very useful for future designsUp until now, there is no such retrofitting has been realized in our country with three- dimensional computational fluid dynamics for the CO₂ compressors. The results in this paper will promote the technological progress of CO₂ compressors. Many other CO₂ compressors can be retrofitted by such a technology.