【摘要】 从工艺角度对麦草自催化乙醇法制浆进行了初步研究，探讨了该法中的自催化现象．结果表明，在比较高的温度下麦草乙醇蒸煮体系中也能产生足够的酸度达到催化蒸煮的目的；麦草乙醇法脱木素程度同时受到酸度和时间的影响，体系酸度增大，一方面促进了木素的降解和半纤维素的降解与溶出，另一方面也促进了木素的缩合；单段乙醇蒸煮脱木素只能达到一定水平，通过延长蒸煮时间来降低纸浆硬度的措施其效果并不明显．更多还原

【Abstract】 The technology and delignification course of ethanol-water pupling of wheat straw were investigated in this paper. The results of straight-cross experiment show that the sequence of the factors studied in this paper, influencing screened pulp yield, hardness and brightness from great to small is that temperature>liquid ratio>time at Tmax except for ethenol concentration.Based on those experiment, a cooking temperature of 195, liquid ratio of 18 and a time at Tmax of 70minutes appears to bedesirable.Study of delignification course suggested that it can be devided into two phases:the first one from the beginning of delignification to 20 minutes at Tmax is the bulk delignification phase, during this phase the pulp delignified by 75.39%;the second one, the period from 20 minutes to 70 minutes at Tmax is the residual delignification phase, the pulp delignified by only 11.27%. The wheat straw chang into pulp at the initial stage of bulk delignification phase with ethanol-water. The screened pulp is 57.30% in the fiber liberation point and kappa No.is 68.43%,correspondly.The linear relationship between the lignin contents of pulp and kappa No. of the screened pulp was obtained in this experiment.更多还原