CFD Analysis of ESP for Thermal Power Plant

     The performance of ESP is improved by using a technique developed by us which we have termed as MDT (Mass Distribution Technology) is to achieve low velocities in the region where the dust concentration is high and to shift the high velocity to regions where the dust concentration is low.

     The results obtained by CFD analysis of ESP using MDT are discussed. Initially the modifications were done iteratively on the MDT model developed as shown in Figure 1 and then the final results obtained are applied to the 3-D model as shown in Figure 2.

     Figure 3 shows the velocity profile in the existing ESP model. When this result is compared with Figure 3, it can be observed that re-entrainment of particle starts occurring from the third hopper onwards as the velocity is high from this region, and the high velocity region is very close to hoppers where the dust particles settle down.

      The MDT technique attempts to shift this high velocity region upwards from the hopper region so that particle re-entrainment is reduced. This nature is achieved by insertion of properly designed plates and screens at appropriate location. It can be seen here that the high velocity region causing particle re-entrainment has been shifted upwards, thus reducing particle re-entrainment. It can also be seen that the region of high velocity in the center region of ESP is increased.