• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议> >BOOSTING PULP YIELD OF WESTERN SOFTWOOD WITH ANTHRAQUINONE/POLYSULFIDE KRAFT PULPING
【24h】

BOOSTING PULP YIELD OF WESTERN SOFTWOOD WITH ANTHRAQUINONE/POLYSULFIDE KRAFT PULPING

机译：蒽醌/聚丙烯酰胺浆法制浆西部针叶木浆

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Current trends toward higher yields and lower kappa number have sparked renewed interest inrnanthraquinone/polysulfide pulping and prompted this study. The effect of anthraquinone (AQ) and polysulfide (PS),rnboth separately and in combination, on kraft cooks of western softwood was investigated in a laboratory batch digester.rnBrownstock kappa number, brownstock yield, ease of bleaching and strength measurements for AQ, PS and AQ/PSrnpulps were compared to conventional kraft pulps. The addition of 0.07% anthraquinone (on oven dry wood) resultedrnin a 13% reduction in the brownstock kappa number with no significant change in pulp yield. Polysulfide alone, at arncharge of 1.3% (on oven dry wood), increased pulp yield 1.3% at constant brownstock kappa number. An increase ofrn1.8% in active alkali, over the conventional kraft cook, was required to maintain a constant kappa number withrnpolysulfide use. When using both anthraquinone and polysulfide, the brownstock kappa number decreased 19%. Thisrndecrease was greater than that obtained with anthraquinone alone. The resultant pulp yield increased by 1.5%. Thernyield increases achieved with PS and AQ/PS were carried through the bleaching stage. Strength results showed thatrnthere was no decrease in strength for PS and AQ/PS pulp; if anything, there was an increase in pulp strength. Thesernresults showed that, in combination, AQ and PS can be used to decrease kappa number and increase pulp productionrnwith no detrimental effect on pulp strength. Furthermore, the data showed that PS enhances the decrease in kapparnnumber achievable with AQ. An explanation for this effect is proposed.
机译：当前朝向更高产量和更低κ值的趋势引发了对蒽醌/多硫化物制浆的新兴趣，并促使了这项研究。在实验室分批蒸煮器中研究了蒽醌（AQ）和多硫化物（PS）分别和组合对西方软木牛皮纸蒸煮的影响。rnAQ，PS的黑kappa值，黑木得率，易于漂白和强度测量将AQ / PSrnpulp和AQ / PSrnpulp与常规牛皮纸浆进行比较。添加0.07％的蒽醌（在干燥的木材上）导致棕浆中的kappa值降低1​​3％，但纸浆产量没有明显变化。单独的多硫化物，在装填量为1.3％时（在烤箱干燥的木材上），在恒定的原木kappa值下，纸浆产率提高了1.3％。为了保持恒定的卡伯值和使用多硫化物，需要比常规的牛皮纸蒸煮器的活性碱提高1.8％。当同时使用蒽醌和多硫化物时，褐变kappa值降低了19％。该降低大于单独使用蒽醌获得的降低。所得的纸浆产率提高了1.5％。 PS和AQ / PS在漂白阶段使产率增加。强度结果表明，PS和AQ / PS纸浆的强度没有下降；如果有的话，纸浆强度增加了。这些结果表明，结合使用AQ和PS可以降低Kappa值并增加纸浆产量，而对纸浆强度没有不利影响。此外，数据表明，PS增强了AQ可达到的kapparn数的降低。建议对此效果进行解释。

著录项

  • 来源
    《》|1990年|p.1-11|共11页
  • 会议地点
  • 作者

    Betty Thompson; Gopal Goyal; Lynda Sturgeoff; Roberta Hanna;

  • 作者单位

    Pioneer Technology CentrernPCI Chemicals Canada Inc.rnMississauga, Ontario, L5K 2L3rnCanada;

    Research and Development CenterrnPotlatch CorporationrnCloquet, Minnesota, 55720-0503rnUSA;

    Pioneer Technology CentrernPCI Chemicals Canada Inc.rnMississauga, Ontario, L5K 2L3rnCanada;

    Research and Development CenterrnPotlatch CorporationrnCloquet, Minnesota, 55720-0503rnUSA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 各种纸浆;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号