龙须草自催化乙醇法制浆工艺及反应历程的研究

Auto-Catalytic Ethanol Pulping of Chinese Alpine Rush and Its Reaction Course

通过正交实验确定了龙须草自催化乙醇法制浆的工艺条件 ,并对其反应历程进行了研究。正交实验结果表明 ,最佳工艺条件为 :蒸煮温度 180℃ ,液比 1∶10 ,保温时间 12 0min ,乙醇浓度 5 5 % ;反应历程研究结果表明 :(1)木素的脱除分两个阶段 :大量脱除阶段和残余脱除阶段 ;(2 )木素和细浆卡伯值呈现很好的线性关系 ;(3)蒸煮至纤维分离点时 ,浆中仍有较多的木素 ,应继续保温 ;(4)

The auto catalytic ethanol pulping technology of Chinese alpine rush was investigated through orthogonal experiment, and its reaction was studied. Results showed that the optimal pulping condition is as follows:temperature 180℃, liquid ratio 1:10, ethanol concentration 55%, time at max temperature 120 minutes. Results of reaction studies showed: (1) Deligninfication occurred in two phases, the principal phase and the final phase; (2)A linear relationship between the kappa number and the lignin content of the screened pulp apparently existed; (3) This was still quite high lignin content in the pulp when the fiber separation point was reached extending the cooking time at this temperature was necessary; (4) Most of the ash in the raw material remained in the pulp.