含臭氧段ECF漂白的研究进展

Research Progress of Ozone-containing ECF Bleaching

关键词:  臭氧  ECF  低污染漂白  AOX

Key Words:ozone  ECF  low pollution bleaching  AOX

摘要:简要概括了低污染漂白技术的发展和相关分类；并对臭氧辅助ECF漂白的国内外研究现状展开综述。对比分析了以化学处理为主的ECF和TCF两种低污染漂白技术，总结得到臭氧辅助ECF漂白技术具有良好的发展前景；与国外已经完善的含臭氧段ECF漂白技术相比，臭氧漂白技术的国产化仍面临不同原料的纸浆漂序和工艺优化、新型保护剂的开发以及大型臭氧发生器和高浓搅拌器的研发等问题。希望能够有更多的学者对臭氧漂白进行更多的基础研究，打破国内含臭氧段ECF漂白技术的技术壁垒，早日实现臭氧漂白技术的国产化。

Abstract:This paper discussed the water pollution caused by pulp and paper industry in China. The development and classification of low pollution bleaching process was summarized. The low-pollution bleaching can be divided into two categories according to the types of bleaching agents， the elemental chlorine free （ECF） bleaching with ClO₂ as the main bleaching agent and the totally chlorine free （TCF） bleaching of mainly using oxygen-based bleaching agent. Among these processes the ozone/ECF bleaching is a promising technology. The research status of ozone/ECF bleaching in domestic and overseas was reviewed. Although ozone ECF bleaching in abroad is a mature technology， it still exists many problems in domestic. Such as optimization of bleaching sequence of different pulps, developments of new protective agents， large ozone generator and high concentration agitator.