Energy Consumption of Dense-phase Pneumatic Conveying in Long-distance Pipe

In order to research the energy consumption of gas solid two phase flow, a 1:1 test bench for the pneumatic conveying system was set up. Gas-solid two-phase flow experiments of fly ash were carried out with compressed air being adopted as dynamic force. Groups of GP/DP transmitters were installed along the pipeline. Pressure drop along the pipeline was expressed by the GP values. So the energy consumption can be achieved by the given experimental data. The effect of the solids loading ratio, pneumatic conveying pressure, gas velocity and pipeline arrangement etc on the energy consumption were performed according to the experiments. Finally, the key methods of saving energy in pneumatic conveying were given, which could optimize the system design.