• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Control systems conference on the development and application of process control and management technology in the pulp and paper industry, information tools to match the evolving operator role >ADVANCED COATING TECHNOLOGY EXPERIENCE
【24h】

ADVANCED COATING TECHNOLOGY EXPERIENCE

机译：先进的涂层技术经验

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Advanced Coating Technology (ACT) is a new on-line system that integrates measurement and modelling to predict the location of the gel point, which is used as a quantitative representation of print quality in the coating process. As part of ACT, a machine direction (MD) drying model has been developed recently as a co-operative project by Honeywell-Measurex and Sappi, Gratkorn. This model was installed at the Sappi, Gratkorn mill on two coating machines producing woodfree coated (WFC) paper and measuring respectively 6.4m and 8.5m wide. An overview of the modelling scheme and initial results from the mill installation are presented. The MD drying model is based on energy and mass balances, with emphasis on the modelling of ambient and boundary air conditions. The gas consumption and scanner measurements at the beginning of each coaler are used as model input values. The computed web values are compared with the scanner measurements at the end of each coating station. Several additional on-line temperature measurement sensors have been installed to compare the measured and computed values at the measurement locations. The results show a good agreement of the model predictions with measurements. The model computes temperature, moisture and partial pressure MD profiles for the base sheet and the coating layer. These profiles, and especially the position of a given coat moisture gel point and the evaporation rate in its surroundings, are correlated with the printability mottle number of coated paper. The model is tuned if the computed evaporation and temperature correspond to the measurements for different drying conditions. The MD drying model result is the run-time conditional probability of the mottling number and is representative of the drying process performance.
机译：先进的涂层技术（ACT）是一种新的在线系统，它集成了测量和建模以预测凝胶点的位置，其用作涂覆过程中的印刷质量的定量表示。作为ACT的一部分，最近一直开发了机器方向（MD）干燥模型作为Honeywell-Pepticx和Sappi，Gratkorn的合作项目开发。该型号安装在Sappi，Gratkorn Mill上的两种涂布机上，生产Woodfree涂层（WFC）纸张和测量分别为6.4米和8.5米。提出了模拟方案的概述和磨机安装的初始结果。 MD干燥模型基于能量和质量平衡，重点是环境和边界空气条件的建模。每个煤机开始时的气体消耗和扫描仪测量用作模型输入值。将计算的Web值与每个涂覆站末端的扫描仪测量进行比较。已经安装了几种额外的在线温度测量传感器，以比较测量位置处的测量值和计算值。结果显示了模型预测与测量的良好一致性。该模型为基片和涂层计算温度，水分和部分压力MD型材。这些型材，特别是给定涂层水分凝胶点的位置和周围环境中的蒸发速率，与涂布纸的可印刷性斑块数相关。如果计算的蒸发和温度对应于不同的干燥条件的测量，则会调谐模型。 MD干燥模型结果是斑点数量的运行时间条件概率，并且代表干燥过程性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号