• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Effect of blending sewage sludge with coal on combustion and ash slagging behavior
【24h】

Effect of blending sewage sludge with coal on combustion and ash slagging behavior

机译：将污水污泥与煤燃烧燃烧和灰粘结行为的影响

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

Blending sewage sludge (SS) with Zhundong coal (ZDC) for combustion in coal-fired power plants is a recent approach that can alleviate the shortage of high-quality coal resources and achieve the harmless treatment of SS, while also having a significant influence on combustion and ash slagging. Due to the high content of alkali and alkaline earth metals (AAEMs) in ZDC, its combustion ash has a strong likelihood of slagging. This study aims to investigate the effect of blending SS with ZDC on combustion and ash slagging. Thermogravimetry (TG) results indicate that blending with SS could lower the ignition and burnout temperatures of ZDC. With an increase in the ratio of sludge, the comprehensive combustion index (S) first increases and then decreases, showing that blending SS with ZDC in an appropriate proportion could improve the overall combustion. Through the analysis of the interaction, it is confirmed that SS and ZDC could complement each other during co-combustion due to their different components. X-ray fluorescence (XRF) was used to test the ash components of different blending ratios (10-30%) and combustion temperatures (800-1100 degrees C). Slagging indices including alkali acid ratio (B/A), silicon ratio (G), and silica-alumina ratio (SiO2/Al2O3) were also calculated. The results suggest that the slagging behavior of ZDC is greatly reduced even if the blending ratio is only 10%. However, with an increase in the blending ratio, the effect on slagging gradually weakens. Considering the dual influence of SS blending on combustion and slagging, this study assumes the optimal blending ratio of 20%. Influenced by the components of the combustion ash, B/A and SiO2/Al2O3 are more suitable for evaluating the slagging tendency of ash; however, there is great deviation in the results for G. This research is beneficial to coal-fired power plants for the selection of operation parameters during co-combustion with SS.
机译：将污水污泥（SS）与燃煤发电厂中的燃烧燃烧（ZDC）是最近的一种方法，可以缓解高质量煤炭资源的短缺，实现SS的无害治疗，同时也有重大影响燃烧和灰烬粘合。由于ZDC中碱金属和碱土金属（AAEM）的含量高，其燃烧灰具有强烈的粘连性能。本研究旨在探讨混合SS与ZDC在燃烧和灰分中的效果。热升降机（TG）结果表明，与SS混合可以降低ZDC的点火和烧坏温度。随着污泥的比例的增加，综合燃烧指数首次增加，然后降低，表明以适当比例的ZDC共混SS可以改善整体燃烧。通过对相互作用的分析，确认SS和ZDC由于其不同的组分而在共燃烧期间彼此相互补充。 X射线荧光（XRF）用于测试不同混合比（10-30％）和燃烧温度（800-1100℃）的灰分成分。还计算了包括碱酸比（B / A），硅比率（G）和二氧化硅 - 氧化铝比（SiO 2 / Al2O3）的粘连指数。结果表明，即使混合比仅为10％，ZDC的粘接行为大大降低。然而，随着混合比率的增加，对粘连的影响逐渐减弱。考虑到SS混合在燃烧和粘合的双重影响，本研究假定最佳共混比例为20％。受燃烧灰，B / A和SiO 2 / Al2O3的组分的影响更适合于评估灰分的剥离趋势;然而，G的结果存在很大的偏差。该研究有利于燃煤发电厂，用于在与SS共燃烧期间选择操作参数。

著录项

  • 来源
    《RSC Advances》 |2019年第51期|共11页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 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