制浆车间筛选漂白工段工艺流程设计说明书年产 30 万吨漂白杨木 KP 浆制浆车间洗筛漂工段工艺流程设计摘要杨木 KP 浆蒸煮后经 DD 洗浆机洗涤，先进入一段木聚糖酶的处理，然后进行中浓氧脱木素段,在氧脱木素前经过能较好地提高氧脱木素段的选择性和有效性的过氧酸预处理。氧脱出来后经除节筛，两段压力筛筛选、净化后进入 D/Ep/P 三段轻 ECF 漂白。，最终白度可达 90% 以上。出来的漂白浆可以直接成商品浆售出或送造纸车间抄纸。木聚糖酶可以降低杨木浆的卡伯值， 杨木 KP 浆经氧脱木素, 卡伯值降低 48. 1%。杨木浆在氧脱木素前用过氧酸预处理,脱木素程度分别达 55. 8%.氧化氯作为一种广谱、高效、无毒的消毒剂，本身性能柔和，不损伤纤维，漂白后的纸浆白度高，纸浆得率高。过氧氢强化的碱抽提中过氧化氢的使用可以使纸张白度显著提高。另一个明显的效果是，过氧化氢可以漂白浆料中的碎片。终段漂白采用 H2O2 漂白可改善浆料白度的稳定性。关键词：杨木 KP 浆；洗筛漂；DD 洗浆机；氧脱木素；两段压力筛；二氧化氯漂白；ECF 漂白AN ANNUAL OUTPUT OF 300,000 TONS OF BLEACHED PULP PULP PLANT POPLAR KP WASH SIEVE DRIFT SECTION PROCESS DESIGNABSTRACT Poplar KP pulp after cooking by DD washed pulp washing machine, first into the processing section of xylanase, and then the medium consistency oxygen delignification, after oxygen delignification can better improve the oxygen delignificationthe selectivity and effectiveness of the peroxy acid pretreatment. Knotter sieve out the oxygen off, two-stage pressure sieve screening purified into D / Ep / P three sections of light ECF bleaching. Final whiteness of up to 90%. The bleached pulp out directly into market pulp sold or send papermaking workshop papermaking. Xylanase can reduce Young Kappa number of the pulp, poplar KP slurry through oxygen delignification, the kappa number 48.1% reduction. Yang wood pulp before oxygen delignification with peracetic acid pretreatment, delignification 55.8%, respectively. Chlorine monoxide as a broad-...
