真空回潮机出口物料含水率稳定控制改进

Improvement of moisture content stability control of vacuum humidifier outlet material

摘要

针对真空回潮机出口物料含水率稳定性差的问题，通过对真空回潮工序物料含水率影响因素才分析，在优化控制进入真空回潮设备每箱烟块重量、改进冷却水循环系统的基础上，统计分析抽真空时间长短单位时间内增湿蒸汽和水累积量大小与真空回潮工序含水率的关系，采用DOE实验设计最优真空回潮机参数，为真空回潮物料含水率稳定性控制提供了依据。最终实现了真空回潮及出口物料含水率标准偏差年度平均值下降20%以上，年度冬/夏季真空回潮机出口物料含水率均值极差≤0.8%。

Abstract

To address the issue of poor moisture content stability in vacuum rehumidification machine output materials, this study first analyzed the influencing factors of moisture content in the vacuum rehumidification process. Based on optimizing the weight of each carton of tobacco blocks entering the vacuum rehumidification equipment and improving the cooling water circulation system, statistical analysis was conducted to examine the relationship between the cumulative amount of humidification steam and water per unit time during vacuum extraction and the moisture content in the rehumidification process. Through a Design of Experiments (DOE) approach, optimal parameters for the vacuum rehumidification machine were determined, providing a basis for controlling moisture content stability. The results achieved a reduction of over 20% in the annual average standard deviation of moisture content in vacuum rehumidified materials, with the annual mean deviation of moisture content in winter/summer output materials ≤ 0.8%.

关键词

真空回潮 / 批次差异 / 出口物料含水率

Key words

Vacuum rehumidification / Batch variation / Moisture content of export materials

参考文献

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