KLD2-3两段式滚筒烘丝机控制模式研究

Research on Control Modes of KLD2-3 Two-section Cylinder Dryer

为验证KLD2-3两段式滚筒烘丝机9种控制模式对卷烟产品综合质量的影响,采用对比论证法分析了不同控制模式对卷烟产品的物理质量、感官质量、叶丝常规化学成分、烟气常规化学成分、烟气香味成分的影响。结果表明:①物理质量方面:逆流式控制模式比顺流式控制模式填充值高,烟丝耐加工性能好;②感官质量方面:顺流式控制模式优于逆流式控制模式,其中以顺流两段式前高后低模式(滚筒一区脱水量大,二区脱水量小)感官质量最优;③叶丝常规化学成分方面:与固定筒壁温度控制模式相比,固定热风风量控制模式下叶丝总糖、还原糖含量整体较高,烟碱、氯和钾的含量整体差别不大;④烟气化学成分方面:不同控制模式对烟气焦油量、烟碱量影响不大,但顺流式控制模式比逆流式控制模式一氧化碳释放量低。⑤烟气香味成分方面:顺流式控制模式比逆流式控制模式酸性香味成分总量高,碱性香味成分以顺流两段式前高后低控制模式为最高,中性香味成分总量变化不大。

The effects of 9 control modes for KLD2-3 two-section cylinder dryer on overall quality of cigarette product, the physical quality, sensory quality, routine chemical components in cut strips, routine chemical components and aroma components in cigarette smoke were analyzed. The results showed that： 1） The cut tobacco dried under counter current control mode featured higher filling value and better processing durability. 2） Cocurrent control mode was superior to counter current in terms of sensory quality, particularly for the control mode which evaporated more water at the first section of cylinder. 3） The contents of total sugar and reducing sugar in cut strips dried under the control mode of fixed hot air volume were higher than those under the control mode of fixed cylinder wall temperature, while the contents of nicotine, chlorine and potassium showed little differences. 4） Control modes had little effects on the deliveries of tar and nicotine in cigarette smoke, however, the CO delivery in cigarette smoke was higher under counter current control mode. 5） The total amount of acidic flavor components in cigarette smoke was higher under cocurrent control mode, the alkaline flavor components in cigarette smoke was the highest under the cocurrent high to low control mode, while the change of total amount of neutral flavor components was negligible.