By using a three-dimension particle dynamics analyzer (PDA)

cold model experimental study on the characteristics of gas-solid two-phase flow around the finned-tube

the element of impact separator used in circulating fiuidized bed boiler (CFBB)

was conducted. The distributions of velocity

turbulent intensity

particle size and solid concentration of gas-solid two-phase flow around finned tube were obtained. The effects of upstream velocity and finned tube structure on fluid characteristics were also considered. The measured results built a sound base for gas-solid separating mechanism research and structure optimization design of finned-tube separator.