Study on candle filter surface regeneration characteristics at room temperature

Ceramic barrier filtration is a leading technology employed in hot gas filtration. The deposited ash on these filters is removed by a process known as surface regeneration. The objective of this research has been to utilize the room temperature testing facility (RTTF), to study the surface regeneration process at room temperature. The face velocity of the fluidized gas, the regeneration pressure of the back pulse and the time to build up ash on the surface of the candle filter were identified as the important parameters to be studied. Two types of ceramic candle filters were used in the study. The candle filters were subjected to several cycles of ash build-up followed by surface regeneration, under different parametric conditions. Effects of each of the parameters on the performance of the regeneration process, and a comparative study between the two candle filters are presented.