The experimental research, process design and production practice of total chlorine free OpQPo bleaching bagasse pulp were introduced in this paper. The results showed that Kappa number decreased from 14. 0-15. 0 to 7. 0-7. 3 with a 50% -51% removal of residual lignin, and pulp brightness increased from 42% - 45% ( ISO ) to 58% - 60% ( ISO ) after a strengthened oxygen delignification. The production practice showed a better performance than that in lab. After subsequent pretreatment and pressurized hydrogen peroxide bleaching, the final pulp brightness was beyond 80% and the viscosity was over 800 mL/g. The pulp quality was much better than traditional Chlorine-Alkali Extraction-Hypochlorite ( CEH) bleached pulp. Moreover, adsorbable organic halides ( AOX) was not generated any more in the bleaching process. The wastewater was only discharged in chelating pretreatment ( Q ) stage and easily treated to meet the critical discharge standard due to its lower chromaticity and lower pollution load. In contrast to the traditional bleaching, no additional investment was needed in this new technology. Besides, the production procedure was flexible and the operation was stable. The investment of main equipments was about ¥ 13. 55 million yuan.%总结了蔗渣浆清洁漂白生产线运行全无氯( OpQPo)流程时的小试实验、流程设计及生产实践经验。结果表明：未漂蔗渣浆经强化氧脱木质素处理之后,卡伯值从14.0~15.0降至7.0~7.3,脱木质素率达到50%~51%,白度则从42%~45%( ISO,下同)提高至58%~60%,生产运行效果优于小试实验；经后续预处理和压力过氧化氢漂白之后,纸浆产品白度达到80%以上,黏度在800 mL/g以上,产品质量明显优于传统氯气漂白-碱处理-次氯酸盐漂白( CEH)漂白；漂白过程不产生有毒有害的可吸附有机卤化物( AOX),且仅螯合预处理( Q)段有废水排放,废水色度低、污染负荷轻,易处理,可达标排放；相对传统漂白,新技术的实施并不会增加运行费用,主体设备投资约为1355万元人民币。
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