非木材纤维原料的Milox制浆方法的研究  

Research on Milox pulping of non-wood raw material

作　　者：于洪祥[1] 汤志刚[2] 薛崇昀[2] 

机构地区：[1]清华大学,北京100084 [2]中国制浆造纸研究院,北京100020

出　　处：《中华纸业》2005年第6期31-34,37,共5页China Pulp & Paper Industry

摘　　要：本实验研究一种以甲酸和过氧化氢为蒸煮剂的制浆过程,讨论甲酸浓度、液比、温度、H2O2用量和反应时间对蒸煮过程的影响。通过实验确定在其它条件固定的情况下,甲酸浓度88%、液比8∶1为竹浆脱木质素的最佳条件;其H2O2用量2%与0.5%时相比,前者在获得相同木质素含量竹浆的同时,比后者的得率高出将近2个百分点。不同原料相比,麦草较好,实验条件下得率43.14%,卡伯值32.3,粘度980.35ml/g;嫩竹比老竹更易脱除木质素,竹浆的纤维质量最好,二重重均纤维长度都在1.7mm左右。In this article, a method of pulping using the agent of formic acid with hydrogen peroxide is studied. The influences of concentration of formic acid, liquid-solid ratio, temperature, concentration of hydrogen peroxide and reaction time on the pulping process are discussed. The optimum condition for delignification is obtained through experiments: formic acid concentration 88% and liquid-solid ratio 8:1 with other factors fixed. It is also concluded that pulp yield is higher by 2% when hydrogen peroxide concentration is 2% than the concentration is 0.5%, and at the same time the delignification is nearly the same. In addition, different raw materials are compared. Pulp from wheat straw is perfect with pulp yield of 43.14%, Kappa of 32.3 and viscosity of 980.35ml/g under the experiment condition. Fresh bamboo is easier to be delignified than old one. The fibre of bamboo pulp is the best with W weighted AV about 1.7mm .

关 键 词：非木材纤维原料 制浆方法 H2O2用量 木质素含量 制浆过程 过氧化氢 实验研究 蒸煮过程 反应时间 实验确定 最佳条件 脱木质素 实验条件 纤维质量 纤维长度 酸浓度 蒸煮剂 竹浆 卡伯值 相比 得率 麦草 嫩竹 

分 类 号：TS74[轻工技术与工程—制浆造纸工程]