提出了非木材木质纤维生物质碱性亚硫酸盐制浆(ASP)生物炼制的理念,研究了总用碱量、亚硫酸化度、温度和时间对麦草碱性亚硫酸盐法蒸煮深度脱木质素特性和木质素磺化的影响.结果表明:麦草ASP法具有高的深度脱木质素选择性；深度脱本质素延伸与木质素磺化度提高具有一致性；总用碱量、亚硫酸化度、最高温度和保温时间对深度脱木质素选择性和木质素磺化度都有重要的影响；在总碱用量18.0％,亚硫酸化度85.0％,液比值3.5,最高温度168℃,保温150 min的条件下,可制得卡伯值8.8,得率56.8％,黏度为33.3 mPa·s的优良纸浆,此时黑液中磺化本质素磺酸基含量达2.16 mmol/g(以固形物计).从深度脱木质素选择性、木质素磺化和纸浆基本特性考虑,麦草ASP法具有制浆生物炼制的前景.%The biorefineiy concept of non-wood lignoceltulosic fiber biomass alkaline sulfite pulping (ASF) was proposed in this study. The influences of total alkali charge, sulfurous acid degree, cooking temperature and time on the characteristics of wheat straw extended delignification and lignin sulfonation were investigated. The results indicated that ASP has a high selectivity on extended delignification for wheat straw, and the degree of lignin sulfonation increased with the extending of delignification. The total alkaline charge, sulfurous acid degree, maximum cooking temperature and time at maximum temperature have significant impacts on both extended delignification selectivity and lignin sulfonation degree. A good extended delignification pulp with yield 56.8% , Kappa number S. 8, and viscosity 33. 3 mPa . S was obtained under the cooking conditions of the total alkali charge 18.0% , the sulfurous acid degree 85.0% , liquor ratio 3.5, maximum cooking temperature 168 %℃ and 150 minutes at 168 ℃. Meanwhile the lignin sulfonation group content in the black liquor was up to 2.16 mmol/g. Based on the extended delignification selectivity, the lignin sulfonation and the basic pulp properties, ASP has good perspective for wheat straw pulping biorefinery.
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