人工种植桉木深度脱木素的研究 第二部分:实验室模拟EMCC制浆

Study on Extended Delignification of Plantation Eucalyptus Part Ⅱ: Lab. Simulation of EMCC Pulping

对人工种植的尾叶桉进行了深度脱木素蒸煮的研究。发现延伸改良连续蒸煮（ＥＭＣＣ） 比常规蒸煮（ＣＫ） 具有高的制浆选择性， 可以在保持浆料强度的前提下降低纸浆的卡伯值。在ＥＭＣＣ中， 蒸煮温度、有效碱（ＥＡ） 分布和溶解有机物（ＯＳ） 浓度分布能够显著影响到制浆结果。

Extended modified continuous cooking (EMCC) of E. urophylla was carried out in this study.It was found that the EMCC process has a higher pulping selectivity than the conventional kraft pulping process. EMCC can produce low Kappa number pulps without great loss of pulp yield and viscosity. However, the cooking EA concentration profile, OS concentration profile and the max temperature have significant effect on pulp yield , Kappa number and viscosity in EMCC process.