热科学学报（英文版）2008，Vol.17Issue(1)：69-76,8.
Numerical Study on Pressure Drop Factor in the Vent-Cap of CDQ Shaft
Numerical Study on Pressure Drop Factor in the Vent-Cap of CDQ Shaft
Bo Song 1Yanhui Feng 1Xinxin Zhang1
作者信息
- 1. Department of Thermal Engineering, School of Mechanical Engineering,University of Science and Technology Beijing, Beijing, 100083, China
- 折叠
摘要
Abstract
In CDQ (Coke Dry Quenching) shaft, the vent-cap with complex structure is installed in the cone-shaped funnel under the cooling chamber. It acts to introduce cooling gas and support the descending coke in the chamber. The designing and installation of vent-cap aim to get relatively uniform gas distribution, to reduce the temperature fluctuation of cokes at outlet and realize stable operation of CDQ apparatus. In this paper, the turbulent flow of gas in vent-cap of 1:7 scale CDQ experimental shaft is numerically simulated by using CFD (Computational Fluid Dynamics) software, CFX. The velocity field, the outlet flux distribution and the pressure drop factor of each outlet under three kinds of vent-cap (called high vent-cap, low vent-cap and elliptic vent-cap) are analysed and compared. The results turn out that the pressure drop factor of elliptic vent-cap is larger than the other two vent-caps, and that the pressure drop factors of high vent-cap and low vent-cap almost have the same value.While for a specified vent-cap, the pressure drop factor with pressing brick is larger than that without pressing brick. The work in this paper is valuable for the designing of vent-cap for large-acale CDQ shaft.关键词
CDQ, Vent-cap, Pressure drop, Numerical simulationKey words
CDQ, Vent-cap, Pressure drop, Numerical simulation分类
数理科学引用本文复制引用
Bo Song,Yanhui Feng,Xinxin Zhang..Numerical Study on Pressure Drop Factor in the Vent-Cap of CDQ Shaft[J].热科学学报（英文版）,2008,17(1):69-76,8.
