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1. 发明授权

US06238517B1 Method for controlling oxygen delignification of pulp 有权
标题翻译：控制纸浆氧脱木质的方法
公开(公告)号：US06238517B1
公开(公告)日：2001-05-29
申请号：US09308820
申请日：1999-05-25
申请人： Monica Bokström , Jan-Eric Häggqvist
发明人： Monica Bokström , Jan-Eric Häggqvist
IPC分类号： D21C712
CPC分类号： D21C9/1052 , D21C9/147
摘要： Methods of controlling oxygen delignification processes are disclosed including providing chemicals for a first oxygen delignification step, conducting the first oxygen delignification step with the chemicals, conducting a second oxygen delignification step at a predetermined temperature to produce a delignified pulp, measuring the final kappa number of the delignified pulp subsequent to the second oxygen delignification step, adjusting the chemicals provided for the first oxygen delignification step based upon the difference between the actual kappa number reduction and the desired kappa number reduction for the pulp, and adjusting the predetermined temperature based on the chemicals provided to the first oxygen delignification step in order to provide the delignified pulp at a final pH of from about 10.5 to about 11.5.
摘要翻译：公开了控制氧脱木质过程的方法，包括提供用于第一氧脱木质步骤的化学品，用化学品进行第一氧脱木质步骤，在预定温度下进行第二氧脱木素步骤以产生脱木素纸浆，测量最终卡氏值在第二氧脱木质步骤之后的脱木素纸浆，基于实际的卡伯值降低和纸浆的期望的卡伯值减少之间的差异来调节为第一氧脱木质素步骤提供的化学品，并且基于化学品调节预定温度提供给第一氧脱木质步骤，以便提供最终pH为约10.5至约11.5的脱木素纸浆。

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