公开(公告)号：US06447639B1

公开(公告)日：2002-09-10

申请号：US09797608

申请日：2001-03-05

申请人： Sita Ruby Warren ,  Douglas John McKenzie

发明人： Sita Ruby Warren ,  Douglas John McKenzie

IPC分类号： D21C712

CPC分类号： G05D21/02 ,  D21C3/228 ,  D21C7/12 ,  Y10S162/06

摘要： An on-line pulp digester control system. More particularly, this invention pertains to a control system which employs real time measurements from ion mobility spectrometry to automatically rapidly and continuously determine the physical and chemical characteristics of wood chip feedstock being fed into a pulp digester and thereby maximize process efficiencies, minimize chemical and energy consumption and improve product uniformity. An intelligent control system which utilizes the moisture content and species of wood chips on-line in a pulping process comprising: (a) conveying wood chips from a wood chip storage facility to a digester; (b) scanning the wood chips as they are conveyed to determine their species and moisture content by heating the wood chips and sensing the moisture content and characterizing the species of the wood chips by species signatures obtained by an ion mobility spectrometer; and (c) regulating steam flow and chemicals supplied to the digester according to the moisture content and the characterization of the wood chip species.

摘要翻译： 在线纸浆蒸煮器控制系统。 更具体地说，本发明涉及一种控制系统，其采用离子迁移谱法的实时测量来自动快速并连续地确定进料到纸浆蒸煮器中的木屑原料的物理和化学特性，从而最大程度地提高了工艺效率，使化学和能量最小化 消费和提高产品均匀性。 一种智能控制系统，其在制浆过程中在线使用木屑的水分含量和种类，其包括：（a）将木屑从木屑储存设施输送到消化器; （b）通过加热木片并感测水分含量并通过由离子迁移谱仪获得的物种特征来表征木屑的种类来扫描木片在输送时确定其种类和含水量，以确定其种类和含水量; 和（c）根据水分含量和木屑种类的特性调节供应给蒸煮器的蒸汽流量和化学品。