弱氧化型杀菌剂在卫生纸机上的应用实践
2021-09-21吕文志李微刘康莲王润平李菊香周海燕龙柱
吕文志 李微 刘康莲 王润平 李菊香 周海燕 龙柱



摘要:在国内某台年产5万 t 卫生纸机上进行了一种新型弱氧化型杀菌剂的应用,并与传统杀菌剂进行了应用效果对比。结果表明,该类弱氧化型杀菌剂相比传统杀菌剂有明显优势,能使造纸系统中的细菌、真菌等微生物数量显著降低,微生物得到很好的控制,体系变得更干净。与在其他纸种上的应用相比,该类型杀菌剂用于卫生纸机微生物控制时,控制效果与预期还有差距,这可能是由于卫生纸生产过程中采用了较低的上浆浓度,相同吨纸杀菌剂用量的有效浓度偏低导致的。
关键词:卫生纸机;弱氧化型杀菌剂;中试;应用
中图分类号:TS78 文献标识码:A DOI:10.11980/j. issn.0254-508X.2021.12.018
Application of Weak-oxidation Bactericide on Toilet Paper Machine
LYU Wenzhi1 LI Wei1 LIU Kanglian1 WANG Runping1 LI Juxiang1 ZHOU Haiyan1 LONG Zhu2,*
(1. College of Chemistry and Chemical Engineering,Qiannan Normal Universityfor Nationalities,Duyun,Guizhou Province,558000;2. Papermaking Lab of College of Textile Science and Engineering,Jiangnan University,Wuxi,Jiangsu Province,214122)
(*E-mail :longzhu@jiangnan. edu. cn)
Abstract :A new weak-oxidation bactericide was applied on a domestic toilet paper machine with an annual output of 50000 tons,and its ap? plication effect was compared with the traditional bactericide . The results showed that the weak-oxidation bactericide had obvious advantages in comparison with the traditional bactericide and could be used to significantly reduce the number of microorganisms like bacteria and fungi in the papermaking system. The microorganisms were well controlled and the system became cleaner . Compared with the application in oth ? er kinds of paper,the effect of this weak-oxidation bactericide used for the microbial control of toilet paper was still lower than expected . It may be due to the lower pulp concentration used in the production process of toilet paper,which resulted in the lower effective concentration of bactericide for the same amount of paper.
Key words :toilet paper machine;weak oxidation bactericide;pilot test;application
造紙生产过程中因纤维原料、淀粉及施胶剂等大量碳水化合物类有机质的使用,以及封闭体系下的高温、高湿环境,极易滋生各类微生物[1-3]。微生物大量繁殖一方面会造成浆料和辅料迅速腐烂、变质,另外也易导致设备表面滋生菌泥[4-6],进而造成断纸、纸张破洞等生产质量问题。所以在造纸生产过程中,控制微生物数量非常重要。杀菌剂是用于抑制或杀灭细菌、真菌(酵母菌、霉菌)及藻类等各种微生物的化学品,在造纸行业有重要应用[7-8]。根据作用机理,杀菌剂又可分为杀菌剂和防腐剂,前者能快速杀菌,一般用于清水和白水系统的杀菌处理;后者作用效果慢,但长效,可用于浆料、辅料等储存时的抑菌防腐处理。实际应用中,一般由几种不同作用机制的杀菌剂组成杀菌体系,实现对微生物的协同有效控制。……
