LI Jie, ZHU Yonghong
(Jingdezhen ceramic institute , Jingdezhen 333403, Jiangxi, China)

Abstract: Using ANSYS14.0 code numerical simulations were performed for the flow and mass transfer process in a shuttle kiln’s selfinhaler burner in the cold state and under two typical operating conditions, called as No. 1 and 2 operating condition. In the known simulation conditions the opening wide of the air damper was 10 mm, pressure p at the outlet of the burner was 0 Pa, and that at the fuel gas inlet was separately 20000 and 40000 Pa in No. 1 and 2 operating condition. Good agreement between the velocity value at the burner outlet gotten by the simulation and test indicated the correctness of the simulation. On basis of the simulation results, the flow and mass transfer characteristics inside the burner was researched and conclusions were drawn: 1. Separately, in No. 1 and 2 operating condition, the average velocity at the fuel gas inlet was 5.49 and 6.71 m/s, that at the burner outlet was 2.49 and 4.07 m/s, and the velocity on the center point of the fuel gas nozzle was 134 and 180 m/s. 2. In the region close to the wall near the burner outlet, there existed a big vortex caused by the sharply changing diameter of the burner and the big vortex would enlarge mechanical energy loss. 3. There existed low pressure points on the axis of the burner and the existence of such points caused power absorbing the air. 4. The liquefied petroleum gas was mixed nearly fully with the air at the 1/2 and 3/4 length cross section of the mixture tube of the burner, separately in No. 1 and No. 2 operation condition. 5. The actual consumption coefficient of the primary air was 0.92 and 1.06 separately in No. 1 and 2 operation condition.

Key words: self-inhaler burner, flow and mass transfer characteristics, numerical simulation