Abstract: In petrochemical projects, centrifugal hydraulic turbine can be used to recover and reuse the surplus liquid in the process of depressurization of high pressure fluid. Centrifugal hydraulic turbines are available in a variety of structures, depending on the differences in the working conditions of the recoverable surplus liquid energy. Along with the increasing technology readiness in the design and application of centrifugal hydraulic turbines, the demand for them continues to rise. Based on the theoretical support of practical needs for hydraulic turbine energy recovery and the application achievements in petrochemical plants, this paper focuses on introducing the advantages and disadvantages of different unit matching programs and considerations for selection, covering the application fields, product structure, technical difficulties, unit matching programs of hydraulic turbines. It is hoped that the owners (users) and the design institutes (designers) will know more about centrifugal hydraulic turbines, which will be helpful for those in need to select centrifugal hydraulic turbines in new projects or subsequent energy-saving revamps.

Key words: centrifugal hydraulic turbine, hydraulic turbine power generation, energy recovery, two-way flow hydraulic turbine pump+turbine integrated machine, grid connected cabinet, generator, rectisol