...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >CFB air-blown flash pyrolysis. Part Ⅱ: Operation and experimental results
【24h】

CFB air-blown flash pyrolysis. Part Ⅱ: Operation and experimental results

机译：CFB气吹快速热解。第二部分：操作与实验结果

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

The main operational characteristics of a novel gasifier operating in the CFB mode are outlined in this paper, based on the experimental results from a total of 11 runs in the pyrolysis mode. The operation runs constituted the main experiments in the CFB reactor, carried out to derive meaningful mass balance and additional operational data for the CFB pyrolyzer. The experiments were conducted in varying operating conditions determined by the most important parameters, i.e., biomass flowrate, fluidizing gas flowrate, air factor, initial bed inventory), temperature in the CFB riser, vapor residence time and nominal air factor - or equivalence ratio, S_b. The results obtained showed that the reactor configuration successfully operated as a biomass fast pyrolysis system to maximize liquid yields reaching 61.50 wt% on a maf biomass basis, with the novel feature of providing for autothermal operation at 500℃ and with 0.46 s gas-vapor residence time, by utilizing the by-product char energy content in a single reactor. The reactor provides a very high specific throughput of 1.12-1.48 kg/h m~2 and the lowest gas-to-feed ratio of 1.3-1.9 kg gas/kg feed compared to other fast pyrolysis processes based on pneumatic reactors and has a good scale-up potential, providing significant capital cost reduction. Results to date suggest that the process is limited by the extent of char combustion. Future work should address resizing of the char combustor to increase overall system capacity, improve the solid separation and substantially increase liquid recovery.
机译：基于在热解模式下总共运行11次的实验结果，本文概述了以CFB模式运行的新型气化炉的主要运行特性。该操作运行构成了CFB反应器的主要实验，旨在得出有意义的质量平衡和CFB热解器的其他操作数据。实验是在最重要的参数（即生物质流量，流化气体流量，空气系数，初始床存量），CFB立管中的温度，蒸气停留时间和标称空气系数（或当量比）， S_b。所得结果表明，该反应器配置成功地用作生物质快速热解系统，以基于生物质的最大生物量，使液体收率最大化，达到了61.50 wt％，其新颖的特点是可以在500℃下进行自动热操作，并具有0.46 s的气蒸气停留时间在单个反应器中利用副产物焦炭的能量时间。与其他基于气动反应器的快速热解工艺相比，该反应器具有1.12-1.48 kg / hm〜2的非常高的比重，最低的进料比为1.3-1.9 kg气体/ kg的进料。潜力，大大降低了资本成本。迄今为止的结果表明该过程受焦炭燃烧程度的限制。未来的工作应该解决焦炭燃烧器的尺寸调整问题，以增加整个系统的容量，改善固体分离并显着提高液体回收率。

著录项

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