研究了落叶松预水解硫酸盐法浆氧脱木素O1/O2和四段D0EopD1D2漂白及对浆粕性能的影响,并对漂白过程产生的AOX量进行了分析。结果表明,O1段较佳的NaOH用量为2.5%,D0段较佳ClO2用量为2.5%;D2段ClO2用量为1.5%。在优化条件下制取得到具有优良化学特性的粘胶纤维用溶解浆粕,其反应性能为80.2s,,聚合度为558.7,白度为87.0%ISO,甲纤含量为93.1%,聚戊糖含量为2.34%。此外,漂白产生的AOX总量为1.02kg/t浆。 The effects of pre-hydrolyzed kraft lignin oxygen delignification O1 / O2 and four-stage D0EopD1D2 on the properties of pulp were studied, and the amount of AOX generated during the bleaching process was analyzed. The results showed that the optimum amount of NaOH in O1 was 2.5%, the preferred amount of ClO2 in D0 was 2.5% and the amount of ClO2 in D2 was 1.5%. Under the optimal conditions, the dissolved pulp with excellent chemical properties was prepared and the reaction performance was 80.2s, the degree of polymerization was 558.7, the degree of whiteness was 87.0%, the content of methylcellulose was 93.1%, the amount of pentose The content is 2.34%. In addition, the total amount of AOX produced by bleaching was 1.02 kg / t pulp.