滚筒烘丝机内烟丝滞留时间模型的建立及数值模拟-烟草科技.PDFVIP

2016 年5 月 烟草科技 May 2016 第49 卷第5 期 Tobacco Science Technology Vol. 49 No. 5 滚筒烘丝机内烟丝滞留时间模型的建立及数值模拟 * 周凯敏，何 晋，盛 科，余 娜，朱才生，吉德祥 上海烟草集团有限责任公司技术研发中心，上海市杨浦区长阳路717 号 200082 摘要：为深入研究滚筒烘丝机内部加工过程，提升卷烟产品品质，通过对烟丝在滚筒烘丝机内的运动过 程进行分析，建立了滚筒烘丝机内烟丝滞留时间模型，并通过数值模拟分析了理论模型随各工艺参数的 变化规律。结果表明：烟丝滞留时间随着滚筒转速、半径和倾角的增大而减小；与滚筒烘丝机的长度成 正比关系；随着滚筒内介质风速的增大略有减小。各工艺参数对烟丝滞留时间的影响大小依次为倾角 半径 转速 长度 风速。通过试验验证了滚筒转速与烟丝滞留时间的变化规律，试验结果与数值模拟 结果具有较好的一致性。该模型能够准确预测滚筒烘丝机内烟丝滞留时间，有助于加强烘丝过程控制， 提高制丝加工品质。 关键词：滚筒烘丝机；烟丝；滞留时间；建模；数值模拟 中图分类号：TS432 文献标志码：A 文章编号：1002-0861 （2016 ）05-0094-06 Modeling and numerical simulation of residence time of cut tobacco in cylinder dryer ZHOU Kaimin, HE Jin, SHENG Ke, YU Na, ZHU Caisheng, JI Dexiang* Technology Research Development Center, Shanghai Tobacco Group Co., Ltd., Shanghai 200082, China Abstract: For deeply studying the drying process inside a cylinder dryer and promoting cigarette quality, a model for the residence time of cut tobacco in a cylinder dryer was established by analyzing the movement process of cut tobacco inside a cylinder. The variations of theoretical model along with the changes of technical parameters were analyzed via numerical simulation. The results showed that: the residence time of cut tobacco decreased with the increase of rotational speed, radius and inclination angle of cylinder, slightly reduced with the increase of air velocity inside cylinder, and positively proportioned to cylinder length. Technical parameters in the order of their influences on cut tobacco ’s residence time were inclination angle radius rotational speed cylinder length air velocity. Experiments were carried out to validate the relationship between cylin