公开(公告)号：US20050263259A1

公开(公告)日：2005-12-01

申请号：US11014336

申请日：2004-12-16

申请人： Manpreet Sidhu ,  Richard Van Fleet ,  Michel Dion

发明人： Manpreet Sidhu ,  Richard Van Fleet ,  Michel Dion

IPC分类号： D21D1/00 ,  D21B1/12

CPC分类号： D21D1/002

摘要： Thermomechanical pulp is an important process for producing fibrous mass used in papermaking. A two-level control strategy that stabilizes and optimizes the refining process has been developed. The Stabilization layer consists of a multivariable model predicative range controller that regulates the refiner line operations. The Quality Optimization layer provides the pulp quality control as measured by an online pulp quality (freeness, fibre length) sensor. This control startegy leverages the natural decoupling in the process. The modular design technique is able to handle multiple refiner lines that empty into a common latency chest. A global optimizer is also used to integrate and coordinate the two layers for enhanced constraint handling.

摘要翻译： 热机械纸浆是生产用于造纸的纤维块的重要工艺。 已经开发了稳定和优化精炼过程的两级控制策略。 稳定层由调整精炼机线路运行的多变量模型预测范围控制器组成。 质量优化层提供了通过在线纸浆质量（游离度，纤维长度）传感器测量的纸浆质量控制。 这种控制开始利用了过程中的自然去耦。 模块化设计技术能够处理多个精炼线，将其排入普通滞后的胸部。 全局优化器也用于整合和协调两层以增强约束处理。

公开(公告)号：US20070137806A1

公开(公告)日：2007-06-21

申请号：US11304250

申请日：2005-12-15

申请人： Manpreet Sidhu

发明人： Manpreet Sidhu

IPC分类号： D21C7/14 ,  G01N33/34

CPC分类号： D21D1/002

摘要： A technique for latency removal which can be effected without introducing a significant lag time can advance analysis of pulp for feedback control thermo-mechanical pulp applications. The process for analyzing a pulp material includes: (a) collecting a representative sample of the pulp material, (b) adjusting the consistency of the sample to yield an adjusted pulp sample, (c) employing a disintegrator to release latency from the pulp that is in the adjusted pulp sample to form a pulp composition that is substantially free of latent properties, and (d) analyzing the pulp composition to measure at least one pulp quality.

摘要翻译： 可以在不引入显着滞后时间的情况下进行等待时间去除的技术可以推进用于反馈控制热机械纸浆应用的纸浆分析。 用于分析纸浆材料的方法包括：（a）收集纸浆材料的代表性样品，（b）调节样品的稠度以产生经调节的纸浆样品，（c）使用崩解剂释放纸浆的潜伏期， 在调节的纸浆样品中以形成基本上没有潜在性质的纸浆组合物，和（d）分析纸浆组合物以测量至少一种纸浆质量。