...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Liquefactions of peat in supercritical water with a novel iron catalyst
【24h】

Liquefactions of peat in supercritical water with a novel iron catalyst

机译：新型铁催化剂将泥炭在超临界水中液化

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

Raw iron ore has been investigated for use as a catalyst in direct liquefaction of peat into bio-crude by supercritical water treatment. The liquefaction treatments were conducted at temperatures from 350 ℃ to 500 ℃ for a residence time from 10 min to 4 h. The supercritical water treatment of peat with the iron ore generally resulted in 19-40 wt% yield of heavy oil (HO) that has a higher heating value (HHV) of 30-37 MJ/kg. An increase in the operating temperature generally increased gas yield and decreased oil and char yields, while a maximum HO formation was observed at around 400 ℃. At 400 ℃ for a residence time of 2 h, the addition of the raw iron ore in the operation produced HO at a very high yield of about 40 wt%, nearly doubling that of the treatment without catalyst. An increase of water-to-peat ratio led to enhanced formation of HO products, accompanied by a decrease in gas or char yield. The optimal reaction time appeared to be 2 h for the maximum HO production, and a longer residence time than 2 h generally led to a decrease in HO yield but an increase in gas yield. Compared with the raw iron ore, its H_2-reduced form and two synthesized iron-based catalysts (FeOOH and Fe_2O_3) all showed a lower activity for HO production. Some conventional biomass liquefaction catalysts (i.e., KOH, FeCl_3 and FeSO_4) showed negligible or even negative effects on the HO yield, while these catalysts were found very active for promoting the gas yields and hydrogen formation.
机译：已研究过原铁矿石用作催化剂，通过超临界水处理将泥炭直接液化为生物原油。液化处理在350℃至500℃的温度下进行，停留时间为10 min至4 h。用铁矿石对泥炭进行超临界水处理通常会导致重油（HO）的产率为19-40 wt％，重油的较高热值（HHV）为30-37 MJ / kg。工作温度的升高通常会提高气体产率，降低油和焦炭的产率，而在约400℃时会观察到最大的HO生成量。在400℃停留2小时的时间中，在操作中添加生铁矿石产生的HO的收率很高，约为40 wt％，几乎是没有催化剂处理的两倍。水与豌豆比的增加导致HO产物的形成增加，伴随着气体或焦炭产率的降低。对于最大的HO生成，最佳反应时间似乎为2小时，比2小时更长的停留时间通常会导致HO收率降低，但气体收率增加。与生铁矿石相比，其还原H_2的形式和两种合成的铁基催化剂（FeOOH和Fe_2O_3）均显示出较低的HO生成活性。一些传统的生物质液化催化剂（即KOH，FeCl_3和FeSO_4）对HO收率的影响微乎其微甚至是负面影响，而发现这些催化剂对于提高气体收率和氢的形成非常有效。

著录项

  • 来源
    《Fuel》 |2011年第1期|p.412-420|共9页
  • 作者

    Hanning Li; Scott Hurley; Chunbao (Charles) Xu;

  • 作者单位

    Department of Chemical Engineering, Lakehead University, Thunder Bay, ON, Canada P7B 5E1;

    Department of Chemical Engineering, Lakehead University, Thunder Bay, ON, Canada P7B 5E1;

    Department of Chemical Engineering, Lakehead University, Thunder Bay, ON, Canada P7B 5E1;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    peat; direct liquefaction; bio-crude; supercritical water; iron ore;

    机译：泥炭;直接液化;生物粗暴超临界水铁矿;

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