CAJ | 학술논문

氧脱木素被认为是除了硫酸盐蒸煮脱木素外，成本最低且最简单的脱木素方法，所以氧漂可以把制浆与漂白结合起来。且氧脱木素技术具有环境污染小、漂后纸浆质量高等优点，现己成为ECF和TCF漂白的主体工艺。氧脱木素是以分子氧为漂白剂，酚型木质素与O2反应从而消除侧链，打开苯环，脱甲基化而被氧化降解。该过程受到用碱量、反应温度、时间、氧压、浆浓等许多工艺参数的影响。为改善氧脱木素效果，研究者提出了多种方法，如两段氧脱木素、助剂强化氧脱木素及氧脱木素前预处理等。氧脱木素在我国的应用前景是很广阔的，而且环境保护法规的日益严格对实施氧脱木素技术也十分有利，因此对于氧脱木素的研究还需继续。
양탈목소피인위시제료류산염증자탈목소외，성본최저차최간단적탈목소방법，소이양표가이파제장여표백결합기래。차양탈목소기술구유배경오염소、표후지장질량고등우점，현기성위ECF화TCF표백적주체공예。양탈목소시이분자양위표백제，분형목질소여O2반응종이소제측련，타개분배，탈갑기화이피양화강해。해과정수도용감량、반응온도、시간、양압、장농등허다공예삼수적영향。위개선양탈목소효과，연구자제출료다충방법，여량단양탈목소、조제강화양탈목소급양탈목소전예처리등。양탈목소재아국적응용전경시흔엄활적，이차배경보호법규적일익엄격대실시양탈목소기술야십분유리，인차대우양탈목소적연구환수계속。
Oxygen delignification is considered to be the most simple and lowest cost method of delignification besides kraft pulping. It can put pulping and bleaching together. Because of less environment pollution, higher yield, better quality and cost-effective, oxygen delignification has become a main process of elemental chlorine free (ECF) bleaching and totally chlorine free (TCF) now. Molecular oxygen, as the main bleacher, oxidizes and degrades phenol lignin by eliminating side chain, opening benzene ring and demethylation of lignin. These reactions can be influenced by many process parameters including alkali charge, reaction temperature, reaction time, oxygen pressure, concentration and so on. In order to improve the oxygen delignification efficiency, researchers have proposed various ways, such as two-stage oxygen delignification, reinforcement by additives, pretreatment and so on. Oxygen delignification is a promising bleaching method in China, and it compliance with the increasingly strict environmental protection law, so the research on the oxygen delignification need to continue.