• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Potential for enhanced properties of wood products by hot water extraction of low-value, undebarked Ponderosa Pine.
【24h】

Potential for enhanced properties of wood products by hot water extraction of low-value, undebarked Ponderosa Pine.

机译：通过热水提取低值，未剥皮的美国黄松可以提高木材产品的性能。

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

Suppressed-growth, small diameter Ponderosa Pine stands represent a significant wildfire hazard, but harvesting costs to reduce the hazard are high. These costs can be offset by the value of the timber removed, but these trees are considered low-value. Hot water extraction of undebarked Ponderosa Pine wood chips at 160ºC for 90 minutes showed a mass removal of 20%. Biorefinery technology provides a means of separation and recovery of valuable chemicals from the extract stream. Extracted wood chips showed a 23 - 29% reduction in equilibrium moisture content at 50% RH. Extraction also reduced the inorganic ash content by nearly ⅔; (61%). Reducing the hygroscopicity and inorganic content of the undebarked wood has the potential to impart significant improvements to the production and properties of various wood products. These benefits may provide the economic means for fire-reduction harvesting by converting a low-value wildfire hazard into relatively valuable wood products.
机译：矮小的黄松松林生长受到抑制，代表了重大的野火危害，但为减轻这种危害而进行的采伐成本很高。这些成本可以由砍伐的木材价值抵消，但这些树木被认为是低价值的。未经去皮的美国黄松木屑在160ºC的热水中提取90分钟，除掉的质量为20％。生物精炼技术提供了一种从提取液流中分离和回收有价值的化学品的方法。提取的木屑在50％RH下的平衡水分含量降低了23-29％。萃取还使无机灰分减少了近＆frac23;。 （61％）。降低未剥皮木材的吸湿性和无机含量有可能显着改善各种木材产品的生产和性能。通过将低价值的野火危害转化为相对有价值的木制品，这些好处可以为减少火灾提供经济手段。

著录项

  • 作者

    Chaffee, Timothy L.;

  • 作者单位

    State University of New York College of Environmental Science and Forestry.;

  • 授予单位 State University of New York College of Environmental Science and Forestry.;
  • 学科 Engineering Chemical.;Agriculture Wood Technology.
  • 学位 M.S.
  • 年度 2011
  • 页码 81 p.
  • 总页数 81
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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