Numerical study on the uniform distribution of flow field of airflow dryer
Guanglu Yang,
Xuehui Yang,
Chunsong Li,
Xinfeng Wei,
Zhongpu Lu,
Chu-an Zhang,
Qunlong Wang,
Xuehong Wu
Affiliations
Guanglu Yang
School of Energy and Power Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China; Nanyang Cigarette Factory, China Tobacco Henan Industrial Co., Ltd., Nanyang, 473001, China
Xuehui Yang
Nanyang Cigarette Factory, China Tobacco Henan Industrial Co., Ltd., Nanyang, 473001, China
The uniformity of hot air flow inside the airflow dryer not only affects the moisture distribution at the outlet, but also affects the quality of the product. Based on the guide plate structure of the SH23A airflow tobacco dryer, a gradient curved guide plate dryer is designed, and the flow field distribution of the dryer is numerically investigated under different flow distribution conditions at the hot air inlet and flue gas inlet. The results show that the airflow uniformity is affected by the flow distribution at the inlet of the heated air and the inlet of the cigarette smoke, the structure of the guide plate, etc., the non-uniformity coefficient decreases with the increase of hot air inlet flow rate. The non-uniformity coefficient of tapered arc deflector decreases by 9–12 %.
