• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion and Flame >Physical and chemical characteristics of flue-gas particles in a large pulverized fuel-fired power plant boiler during co-combustion of coal and wood pellets
【24h】

Physical and chemical characteristics of flue-gas particles in a large pulverized fuel-fired power plant boiler during co-combustion of coal and wood pellets

机译：煤粉和木屑颗粒燃烧过程中大型粉煤电站锅炉烟气颗粒的理化特性

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

Fossil fuel combustion should be decreased in future years in order to lower the (C)O2 emissions of energy production. The reduction can be achieved by increasing the amount of CO2-neutral fuels in energy production. Here 6-13% of coal was substituted with industrial or roasted pellets in a pulverized fuel fired power plant without making any changes to fuel grinding or low-NO burners. The effect of pellet addition for the flue gas particles was studied with direct sampling from the boiler super heater area. Based on primary dilution ratio tests, transmission electron microscope images, and the natural electric charge of the particles, it was observed that particles in the flue gas are spherical and have been formed in the boiler at high temperatures. The pellet addition lowered the total particle number concentrations with all of the studied pellet-coal mixtures in comparison to the coal combustion. The 10.5% industrial pellet addition caused a second mode in the particle number size distribution. In addition, based on the chemical analysis of the collected size-fractioned particle samples, results indicated that the pellet addition did not increase the corrosion risk of the boiler. However, the changes in the particle number size distribution and total particle number concentration can affect the operation of electrostatic precipitators and flue gas cleaning.(C) 2016 The Authors. Published by Elsevier Inc. on behalf of The Combustion Institute.
机译：未来几年应减少化石燃料燃烧，以降低能源生产中的（C）O2排放量。减少可通过增加能源生产中的CO2中性燃料量来实现。此处，在粉状燃料发电厂中，有6-13％的煤炭被工业或焙烧的球团代替，而无需改变燃料研磨或低NO燃烧器。通过直接从锅炉过热器区域取样，研究了颗粒添加对烟气颗粒的影响。基于一次稀释比测试，透射电子显微镜图像和颗粒的自然电荷，可以观察到烟道气中的颗粒是球形的，并在高温下在锅炉中形成。与煤燃烧相比，添加的颗粒降低了所有研究的颗粒-煤混合物的总颗粒数浓度。添加10.5％的工业颗粒导致粒度分布的第二种模式。另外，基于对收集的尺寸分级的颗粒样品的化学分析，结果表明添加颗粒不会增加锅炉的腐蚀风险。但是，粒径分布和总粒径浓度的变化会影响静电除尘器的运行和烟道气的清洁。（C）2016作者。由Elsevier Inc.代表燃烧研究所出版。

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