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首页> 外文会议>Fourth International Nonwood Fibre Pulping and Papermaking Conference (4th INWFPPC) (Secondary Fibre Processing Inclusive) Vol.1 Sep 18-21, 2000 Jinan, China >Non-sulfur Semichemical Pulping of Red Oak and Wheat Straw Mixture
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Non-sulfur Semichemical Pulping of Red Oak and Wheat Straw Mixture

机译：赤栎和麦秸混合物的无硫半化学制浆

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摘要

The sodium carbonate semichemical delignification process was applied, using the same cooking conditions for all ratios of red oak and wheat straw. Increasing the wheat straw charge the pulp yield, both total and screened, decreases, but the Klason lignin in pulp decreases only slightly. The degree of delignification, expressed as percents of dissolved lignin, was significantly higher for wheat straw, compared to the red oak. The ratio between lignin and carbohydrates removal shows that the "solubility" of lignin and carbohydrates is for wheat straw alone very similar during the delignification process. Except for the apparent density and compressibility, all properties of the pulps at a freeness of 400 mL CSF decrease. Except for tear strength and compressibility, additional refining of wheat straw pulp (from 400 mL to 220 mL CSF), causes an increase in the strength properties to the level of 100% hardwood (red oak) pulp. The commercial semichemical pulp made from a mixture of hardwoods shows lower values for all strength properties, compared with the properties of laboratory red oak pulp, and much lower than those of wheat straw pulp additionally refined to a freeness of 220 mL CSF.
机译：对所有比例的赤栎和麦秸使用相同的烹饪条件，应用碳酸钠半化学脱木质素工艺。增加麦草料，纸浆的总产量和筛分产量均下降，但纸浆中的Klason木质素仅略有下降。与赤栎相比，小麦秸秆的脱木质素度以溶解的木质素的百分数表示。木质素和碳水化合物去除之间的比率表明，木质素和碳水化合物的“溶解度”对于单独的麦秸来说在脱木质素过程中非常相似。除了表观密度和可压缩性外，在游离度为400 mL CSF时，纸浆的所有性能均下降。除撕裂强度和可压缩性外，小麦秸秆纸浆的额外精制（从400 mL到220 mL CSF）使强度特性提高到100％硬木（红橡）纸浆水平。与实验室赤栎纸浆的性能相比，由硬木混合物制成的商业半化学纸浆的所有强度性能值均较低，远低于另外精制至220 mL CSF的小麦草浆。

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