公开(公告)号：US6017415A

公开(公告)日：2000-01-25

申请号：US924360

申请日：1997-09-05

申请人： Richard B. Phillips ,  Linda A. Beltz ,  Craig Forehand ,  Wayne Christopherson ,  James A. McCann ,  Thomas E. Amidon ,  Jean J. Renard ,  Roger H. Purrington

发明人： Richard B. Phillips ,  Linda A. Beltz ,  Craig Forehand ,  Wayne Christopherson ,  James A. McCann ,  Thomas E. Amidon ,  Jean J. Renard ,  Roger H. Purrington

IPC分类号： D21C3/00 ,  D21C5/02 ,  D21B1/08

CPC分类号： D21C3/00 ,  D21C5/02 ,  Y02W30/648

摘要： A method wherein waste cellulosic material is used as an alternative fiber source during chemical pulping to replace a fraction of the wood chips. The waste cellulosic material is fed to the digester along with wood chips. The waste cellulosic material need not be repulped or slurried prior to digestion. The wood chips may be any species of hardwood or softwood. Normal chemical pulping charges, temperatures and cooking times applied in the case of 100% wood chip pulping may be used for the co-pulping of waste cellulosic material and wood chips. Thereafter, the pulp is processed as usual for chemical pulping, including the steps of blowing the digester, washing and thickening the brown stock, and bleaching the brown stock under the normal conditions used for the component co-pulped with the waste cellulosic material. Further screening or cleaning steps may be required to remove debris from waste cellulosic material.

摘要翻译： 一种在化学制浆期间将废纤维素材料用作替代纤维源以取代一部分木屑的方法。 废弃的纤维素材料与木屑一起进料到蒸煮器。 废纤维素材料在消化之前不需要重新制浆或浆化。 木屑可以是硬木或软木的任何种类。 在100％木屑制浆的情况下应用的正常化学制浆装料，温度和烹饪时间可用于废纤维素材料和木屑的共制浆。 此后，纸浆按常规进行化学制浆处理，包括吹扫蒸煮器，洗涤和增稠棕色坯料，以及在用于与废纤维素材料共同制备的组分的常规条件下漂白棕色坯料的步骤。 可能需要进一步的筛选或清洁步骤以从废弃的纤维素材料中除去碎屑。