...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Steam gasification of oat hull pellets over Ni-based catalysts: Syngas yield and tar reduction
【24h】

Steam gasification of oat hull pellets over Ni-based catalysts: Syngas yield and tar reduction

机译：镍基催化剂对燕麦壳颗粒的蒸汽气化：合成气收率和焦油减少

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

Renewable and clean energy generated from agricultural crops wastes can displace fossil fuels in heating and power generation. The abundant and low-value byproduct from agricultural industries can have a positive impact on the economy and environment of agricultural provinces in Canada and elsewhere. In this work, the effects of catalytic and non-catalytic steam gasification of oat hull pellets on syngas production and tar reduction were evaluated. For non-catalytic gasification, the impacts of temperature, between 650 and 850 degrees C, and steam-to-biomass ratio, between 0.25 and 0.50, were tested. Higher temperature increased fuel gas production and heating value, and decreased tar and char yields. Similar effects were observed with increasing steam-to-biomass ratio, except for char yield, which was not affected. For catalytic gasification, Ni/Al2O3 catalysts, with and without Ce, were synthesized and characterized. All catalytic gasification experiments were performed in a two-stage fixed bed reactor at 650 degrees C and catalyst-to-biomass ratio of 0.5. Among unpromoted catalysts, 10% Ni loading showed the lowest tar formation. Furthermore, adding cerium promoter increased metal dispersion, decreased reduction temperature, and lowered coke formation as observed in TGA. Increasing catalyst to biomass ratio from 0.2 to 1 reduced tar formation from 2.3 to 1.3% but had insignificant influence on syngas yield. As compared to non-catalytic process, using Ni-based catalysts improved the efficiency of steam gasification of oat hull pellets by increasing syngas production and decreasing tar formation. Improving the efficiency will make steam gasification a promising method to convert the agricultural wastes to a clean energy.
机译：从农作物废物中产生的可再生清洁能源可以替代供热和发电中的化石燃料。来自农业的丰富而低价值的副产品可能对加拿大及其他地区的农业省的经济和环境产生积极影响。在这项工作中，评估了燕麦壳颗粒的催化和非催化蒸汽气化对合成气生产和焦油还原的影响。对于非催化气化，测试了温度在650到850摄氏度之间以及蒸汽与生物质比在0.25到0.50之间的影响。较高的温度增加了燃料气体的产量和热值，并降低了焦油和焦炭的收率。随着蒸汽生物量比的增加，观察到了类似的效果，但焦炭产量未受影响。对于催化气化，合成和表征了具有和不具有Ce的Ni / Al2O3催化剂。所有催化气化实验均在两级固定床反应器中于650摄氏度和催化剂生物量比为0.5的条件下进行。在未助催化的催化剂中，10％的Ni负载显示出最低的焦油形成。此外，如在TGA中观察到的，添加铈促进剂增加了金属分散性，降低了还原温度，并降低了焦炭形成。将催化剂与生物质的比率从0.2增加到1可将焦油形成从2.3％减少到1.3％，但对合成气收率的影响不大。与非催化过程相比，使用镍基催化剂可通过增加合成气产量和减少焦油形成来提高燕麦壳颗粒的蒸汽气化效率。提高效率将使蒸汽气化成为一种将农业废物转化为清洁能源的有前途的方法。

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