Experimental investigation of pulse gas flow during the pulse －jet cleaning of a ceramic filter candle
ZHAO Xianyi
CHOI Joohong
JI Zhongli
Abstract：Around pulse nozzles , the pulsed gas will be oscillated accompanied by under －pres－sure.It is an interesting problem because it can improve the jet pulse effect through the loss of sur －rounding clean gas.However, the theories proposed by them were not fully supported , so far, in the careful experimental units for the real system.The commercial filtration device as cold bench ceramic filters was utilized to investigate the transient pressure distribution of pulse gas around the nozzle in this study.Differential pressure around the pulse nozzle was measured in the process of pulsed gas injection and the maximum or the minimum pressure was traced to visualize the pulse gas flow.The formation of negative pressure during the pulse gas injection was observed around the pulse nozzle .And the pulse propagation of the oscillation wave was observed during the expansion process when the pulse gas left the pulse nozzle and its phenomena observed in the experimental results showing qualitatively good a －greement with the simulation results .
Keywords：oscillation wavepulse－jetentrainment effectfilter candletransition pressure
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 204-211 )