无机盐工业

无机盐工业 ›› 2021, Vol. 54 ›› Issue (4): 25-31.doi: 10.11962/1006-4990.2020-0284

• 综述与专论 • 上一篇    下一篇

粉煤灰高附加值利用研究进展

冯文丽1,吕学斌1,熊健1,刘超2,于志昊3,张蕊2()   

  1. 1.西藏大学理学院, 西藏拉萨 850000
    2.天津城建大学环境与市政工程学院
    3.天津大学环境科学与工程学院
  • 收稿日期:2020-10-22 出版日期:2021-04-01 发布日期:2021-04-23
  • 通讯作者: 张蕊
  • 作者简介:冯文丽(1996— ),女,在读硕士研究生,研究方向为粉煤灰高附加值利用及生物质催化转化;E-mail: 807137038@qq.com
  • 基金资助:
    国家自然科学基金面上项目(51876180);国家自然基金青年项目(51908400);西藏大学中央支持地方高校建设经费(藏才教指)([2018]NO.54);西藏大学中央支持地方高校建设经费(藏才教指)([2019]NO.1)

Research progress of high added value utilization of coal fly ash

Wenli Feng1,Xuebin Lv1,Jian Xiong1,Chao Liu2,Zhihao Yu3,Rui Zhang2()   

  1. 1. School of Science, Tibet University, Lahsa 850000, China
    2. Institute of Environmental and Municipal Engineering, Tianjin Chengjian University
    3. School of Environmental Science and Engineering, Tianjin University
  • Received:2020-10-22 Online:2021-04-01 Published:2021-04-23
  • Contact: Rui Zhang

摘要:

粉煤灰是火电厂燃煤过程中产生的固体残渣, 其成分复杂, 具有毒性, 若处理不当会对环境造成危害。因此, 粉煤灰的高附加值利用迫在眉睫。然而, 粉煤灰的品质是制约其高附加值利用的主要因素。目前, 中国粉煤灰品质参差不齐, 缺少完善的品质评价体系, 由此造成粉煤灰利用领域的局限性。针对上述问题, 首先分析了中国粉煤灰的资源化特性, 总结了粉煤灰的品质评价方法, 并重点阐述了适用于粉煤灰高附加值利用的品质评价方法;其次, 详细介绍了粉煤灰高附加值利用技术(高附加值提取技术、高附加值材料制备技术);最后, 对粉煤灰高附加值利用的发展趋势做出了展望。

关键词: 粉煤灰, 品质评价, 高附加值利用

Abstract:

Coal fly ash is the solid residue produced in the process of coal combustion in thermal power plant.Its composition is complex and it is toxic.If mishandled, it will cause damage to environment.However, the utilization rate of coal fly ash is very low and mostly concentrated in low added value areas.Therefore, the high added value utilization of coal fly ash is very imminent.However, the quality of coal fly ash is the main factor restricting its high value-added utilization.At present, the quality of coal fly ash in China is uneven and there is a lack of perfect quality evaluation system, which leads to the limitations in the field of utilization of coal fly ash.In view of the above problems, the resource characteristics of China′s coal fly ash was analyzed firstly, the quality evaluation methods of coal fly ash was summarized and the quality evaluation methods suitable for high added value utilization of coal fly ash is discussed emphatically.Secondly, the high added value utilization technology of coal fly ash(high added value extraction technology, high added value materials preparation technology) is introduced in detail.Finally, the development trend of high added value utilization of coal fly ash is prospected as follows:1)A comprehensive analysis of the influence parameters and interrelations of the quality of coal fly ash, the research on the relationship of components, structure, shape and other quality characteristics with the performance of coal fly ash, the improvement of the classification system of coal fly ash, the establishment of quality evaluation method suitable for the high added value utilization of the coal fly ash;2)The research and development of green, low-cost and efficient integrated technology should be strengthened, such as the extraction of valued elements from the dust ash.The high value conversion of the ash ladder will be achieved.Based on the life cycle assessment, its feasibility and long-term economic and environmental impact should be studied;3)The state′s policy support for the high added value utilization of coal fly ash should be increased to encourage ash-producing enterprises to actively deal with and utilize coal fly ash and promote the industrialization application of high added value utilization technology.

Key words: coal fly ash, quality evaluation, high added value utilization

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