化工进展 ›› 2019, Vol. 38 ›› Issue (05): 2451-2460.DOI: 10.16085/j.issn.1000-6613.2018-1524
收稿日期:
2018-07-23
修回日期:
2018-09-13
出版日期:
2019-05-05
发布日期:
2019-05-05
通讯作者:
王春波
作者简介:
<named-content content-type="corresp-name">陈亮</named-content>(1989—),男,博士研究生,研究方向为循环流化床锅炉脱硫技术。E-mail:<email>c211205@163.com</email>。
基金资助:
Liang CHEN(),Chunbo WANG(),Guangjing YAN
Received:
2018-07-23
Revised:
2018-09-13
Online:
2019-05-05
Published:
2019-05-05
Contact:
Chunbo WANG
摘要:
循环流化床(CFB)锅炉是燃用劣质煤的最佳设备,炉内石灰石脱硫具有操作简单、成本低等优势,但也存在脱硫效率不够高、石灰石利用率低等问题,在当前燃煤超净排放的背景下,有必要探索CFB内石灰石高效脱硫的理论和技术。本文综述了近年来石灰石脱硫研究的新进展,包括水蒸气对CaO硫化反应的影响及机理、石灰石同时煅烧硫化反应及模型等;介绍了近年来提出的改善炉内脱硫效果的方法,包括采用小粒径石灰石和吸收剂的活化等。着重介绍了石灰石同时煅烧/硫化反应新概念,阐述了CFB内石灰石可能无法完全热解的现象及原因,以及该反应的研究进展和需要继续开展的工作。介绍了CaO硫化反应模型的研究进展,并提出了石灰石同时煅烧硫化反应的随机孔模型,将石灰石煅烧、烧结和CaO硫化反应同时考虑在内,更精确地描述炉内石灰石反应的过程。指出研究者应重视炉内脱硫的真实反应过程,避免对CFB脱硫过程做过度简化,否则研究结论很难反映炉内脱硫的真实规律。
中图分类号:
陈亮, 王春波, 闫广精. 循环流化床锅炉内石灰石脱硫研究进展[J]. 化工进展, 2019, 38(05): 2451-2460.
Liang CHEN, Chunbo WANG, Guangjing YAN. Research progress of SO2 removal with limestone in CFB boilers[J]. Chemical Industry and Engineering Progress, 2019, 38(05): 2451-2460.
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