公开(公告)号：US20120305206A1

公开(公告)日：2012-12-06

申请号：US13578680

申请日：2011-02-11

申请人： Robert Daniel Haynes ,  Scott Barton Auger

发明人： Robert Daniel Haynes ,  Scott Barton Auger

IPC分类号： D21C9/00 ,  D21C3/00

CPC分类号： D21C5/027 ,  D21C5/005 ,  D21C5/025 ,  Y02W30/648

摘要： A method for removing ink from printed paper comprising: (a) pulping printed paper at least 25 wt % of which is old newsprint at a consistency of at least about 3% to obtain a pulp slurry; (b) treating the pulp slurry with an ink removing system, which system comprises: (i) a combination of lipase and at least one second enzyme chosen from amylase, xylanase or cellulase, and (ii) a non-ionic surfactant, in amounts effective to release ink from said pulp slurry, wherein the lipase is present in an amount of at least about 0.001 wt % based on the dry content of the pulp slurry and the ratio of the at least one second enzyme:lipase is at least about 1.2:1; and (c) separating the released ink from the pulp slurry, wherein the treating step is carried out prior to a deinking flotation stage.

摘要翻译： 一种从印刷纸上除墨的方法，包括：（a）将至少25重量％的旧印刷纸以至少约3％的稠度制浆打印纸以获得纸浆; （b）用除油系统处理纸浆，该系统包括：（i）脂肪酶与选自淀粉酶，木聚糖酶或纤维素酶的至少一种第二酶的组合，和（ii）非离子表面活性剂，其用量 有效地从所述纸浆中释放油墨，其中基于纸浆的干含量，所述脂肪酶的存在量为至少约0.001重量％，并且所述至少一个第二酶：脂肪酶的比率为至少约1.2 ：1; 和（c）从纸浆中分离释放的油墨，其中处理步骤在脱墨浮选阶段之前进行。

公开(公告)号：US09587350B2

公开(公告)日：2017-03-07

申请号：US13578680

申请日：2011-02-11

申请人： Robert Daniel Haynes ,  Scott Barton Auger

发明人： Robert Daniel Haynes ,  Scott Barton Auger

IPC分类号： D21C5/02 ,  D21C5/00

CPC分类号： D21C5/027 ,  D21C5/005 ,  D21C5/025 ,  Y02W30/648

摘要： A method for removing ink from printed paper comprising: (a) pulping printed paper at least 25 wt % of which is old newsprint at a consistency of at least about 3% to obtain a pulp slurry; (b) treating the pulp slurry with an ink removing system, which system comprises: (i) a combination of lipase and at least one second enzyme chosen from amylase, xylanase or cellulase, and (ii) a non-ionic surfactant, in amounts effective to release ink from said pulp slurry, wherein the lipase is present in an amount of at least about 0.001 wt % based on the dry content of the pulp slurry and the ratio of the at least one second enzyme:lipase is at least about 1.2:1; and (c) separating the released ink from the pulp slurry, wherein the treating step is carried out prior to a deinking flotation stage.

摘要翻译： 一种从印刷纸上除墨的方法，包括：（a）将至少25重量％的旧印刷纸以至少约3％的稠度制浆打印纸以获得纸浆; （b）用除油系统处理纸浆，该系统包括：（i）脂肪酶与选自淀粉酶，木聚糖酶或纤维素酶的至少一种第二酶的组合，和（ii）非离子表面活性剂，其用量 有效地从所述纸浆中释放油墨，其中基于纸浆的干含量，所述脂肪酶的存在量为至少约0.001重量％，并且所述至少一个第二酶：脂肪酶的比率为至少约1.2 ：1; 和（c）从纸浆中分离释放的油墨，其中处理步骤在脱墨浮选阶段之前进行。