Abstract
In view of the problems of high energy consumption and low utilization rate of electric drive air compressor in industrial compressed air system, taking the compressor station of centrifugal compressor driven by PGT25+ gas turbine in long-distance natural gas pipeline as an example, the PGT25+ gas turbine simulation model was established by using three-dimensional CFD numerical simulation software, and the performance changes of gas turbine caused by compressor extraction were analyzed. Through calculation and analysis, it is found that the use rate of the existing station air compressor can be reduced by using gas turbine for compressed air in station, but the performance of gas turbine will be affected to a certain extent. Compared with the existing air compressor energy consumption, it does not have an advantage in economy. However, the influence of the maintenance, spare parts procurement, power supply and technical blockade of the existing electric drive air compressor in the existing station can be comprehensively considered, and the technical transformation can be carried out according to the situation.
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