【摘要】 分别对杨木化机浆的高浓磨浆工艺、磨浆过程/段间加药工艺及两段APMP工艺的磨浆性能进行了研究。研究结果表明:高浓磨浆工艺可以大大改善纸浆质量,增加撕裂强度,改善滤水性能。磨浆过程/段间加药工艺,可以在改善纸浆质量的同时大幅度降低磨浆能耗,加药位置越靠前节能增强效果越好;磨浆过程中加药的浆可漂性能良好,H2O2用量3%时纸浆白度可达74.4%～76.3%ISO,后经H2O2(用量2%)补充漂白,白度可达81%ISO以上。更多还原

【Abstract】 High-yield pulps from poplar were produced by refining the alkaline sodium sulfite pretreated(125℃,20min)chips with adding alkaline hydrogen peroxide at25%pulp consistency.By using3%～5%H 2 O 2 in refiner bleaching,poplar high-yield pulps with refining en-ergy consumption of less than3.0MJ /kg,excellent strength properties(tensile index35～50N·m/g,tear index5.0～5.5mN·m 2 /g,burst in-dex2.5～2.8kPa·m 2 /g)and higher brightness(76%～78%ISO)could be produced.更多还原