打筛模式在造纸法再造烟叶生产中的应用实践  

Application and Practice of Refining-Screening Mode in Reconstituted Tobacco Production by Papermaking

作　　者：李龙 林晓林 张大坤 LI Long;LIN Xiaolin;ZHANG Dakun(Shanghai Tobacco Group Taicang Haiyan Reconstituted Tobacco Co.,Ltd.,Taicang,Jiangsu Province,215433)

机构地区：[1]上海烟草集团太仓海烟烟草薄片有限公司,江苏太仓215433

出　　处：《中国造纸》2022年第9期131-137,共7页China Pulp & Paper

摘　　要：采用中浓压力筛与回流立管的组合形式,对传统再造烟叶浆料的处理模式进行了系统性优化,由单一的“打浆”模式升级为“打筛”模式。在保证浆料匀度的前提下,实现了“低打浆度,高湿重”的浆料处理预期,其中压力筛出口良浆打浆度从46°SR降至34°SR,降幅26.1%;湿重从3.1g提升至4.1g,升幅32.3%。由此浆料生产得到的基片透气度从2300~2500mL/min提升至4000~4200mL/min,提升幅度超过70.0%,匀度指数从342提升至371,提升幅度为9.1%,基片正面静摩擦力从93N提升至112N,提升幅度为20.4%,接触角变化速率从2.8°/s提升至4.6°/s,提升幅度为64.3%。按7500t的年产量计算,打筛模式的制浆能耗成本可降低36.41万元/a。The processing mode of reconstituted tobacco pulp was optimized from traditional refining mode to refining-screening mode through the combining form of medium concentration pressure screen and backflow stand pipe.Based on the ensurance of pulp uniformity,the refining-screening mode realized low refining degree and high wet weight of pulp.The results showed that compared with traditional refin⁃ing mode,the refining degree of finished pulp decreased from 46°SR to 34°SR,decreasing by 26.1%;wet weight increased from 3.1 g to 4.1 g,increasing by 32.3%;the air permeance of substrate increased from 2300~2500 mL/min to 4000~4200 mL/min,increasing by more than 70%;uniformity index increased from 342 to 371,increasing by 9.1%;static friction of the front of base sheet increased from 93 N to 112 N,increasing by 20.4%;instant absorbability increased from 2.8°/s to 4.6°/s,increasing by 64.3%.Moreover,based on the annual output of 7500 t,the pulping energy cost under refining-screening mode could decrease by 0.3641 million CNY every year.

关 键 词：中浓压力筛 低打浆度 高湿重 高吸收性 

分 类 号：TS733[轻工技术与工程—制浆造纸工程]