...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & environmental science >Sustainability of supply or the planet: a review of potential drop-in alternative aviation fuels
【24h】

Sustainability of supply or the planet: a review of potential drop-in alternative aviation fuels

机译：供应或地球的可持续性：对潜在的替代航空燃料的评论

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The development of kerosene-like drop-in alternative aircraft fuels can be categorised into two groups, depending on whether the product increases supply security or provides a reduced environmental footprint. This paper uncovers this relationship through a review of commercially available process technologies (Fischer Tropsch and hydroprocessing) to produce alternative fuels, lifecycle results and recent flight test campaigns, before evaluating the prospects for future fuel development. Supply may be improved through the conversion of coal (with carbon sequestration) or natural gas using the Fischer Tropsch process. Refinement of these alternative fossil fuels, however, provides comparable total life cycle emissions to Jet A-1. The hydroprocessing of biomass feedstock provides for a reduced environmental footprint-approximately 30% reduction for sustainable cultivated feedstock, when blended 50/50 with conventional jet fuel. However, securing supply is a significant issue. Considering aviation is responsible for 2.6% of global CO_2 emissions, converting 6% of arable land (representing 0.95% of the earth surface) to supply a 50/50 blend, thus offsetting 0.78% of global CO_2 emissions, seems impractical based upon the current land use scenario. Furthermore, ground based sectors have significant environmental footprints compared to aviation, yet require little pre-processing of feedstock (i.e. power generation can burn raw feedstock), thus presenting a better biomass opportunity cost.
机译：煤油类直接替代飞机燃料的开发可分为两类，具体取决于产品是提高供应安全性还是减少环境足迹。本文通过在评估未来燃料开发前景之前，通过对商用过程技术（Fischer Tropsch和加氢处理）的审查来揭示这种关系，以生产替代燃料，生命周期结果和近期的飞行试验活动。可以通过费托工艺将煤（固碳）或天然气转化来改善供应。然而，这些替代化石燃料的提炼提供了与Jet A-1相当的总生命周期排放。对生物质原料进行加氢处理可减少环境足迹，将50/50与常规喷气燃料混合后，可持续耕种原料可减少约30％的环境足迹。但是，确保供应是一个重要的问题。考虑到航空业占全球CO_2排放量的2.6％，将6％的耕地（占地球表面的0.95％）转换为50/50的混合气，从而抵消0.78％的全球CO_2排放量，根据当前情况看来是不切实际的土地利用情景。此外，与航空相比，地面部门对环境的影响很大，但几乎不需要对原料进行预处理（即发电可以燃烧原料），因此呈现出更好的生物质机会成本。

著录项

  • 来源
    《Energy & environmental science》 |2010年第1期|17-27|共11页
  • 作者

    L. Rye; S. Blakey; C. W. Wilson;

  • 作者单位

    Department of Mechanical Engineering, University of Sheffield, UK;

    Department of Mechanical Engineering, University of Sheffield, UK;

    Department of Mechanical Engineering, University of Sheffield, UK;

  • 收录信息
  • 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