School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China.
Chemosphere. 2023 Oct;338:139473. doi: 10.1016/j.chemosphere.2023.139473. Epub 2023 Jul 12.
In recent years, the coal gasification industry has rapidly developed, becoming one of the most promising technologies in the advanced and clean coal chemical industry. As a result, the annual emission of coal gasification fine slag (CGFS) has continuously increased. The present situation of CGFS is regarded as a notorious waste in gasification plants and is rudely landfilled or deposited in slag yards, which leads to a large waste of land resources, the release of dangerous elements, and numerous pollution problems. Although CGFS is classified as industrial solid waste, its unique physical and chemical properties make it a valuable resource that cannot be overlooked. This paper focuses on the resource utilization technology and environmental impact of CGFS. The resource utilization of different components of CGFS has realized the evolution from waste to valuable substances. Moreover, during the disposal and utilization of CGFS, its environmental effects cannot be ignored. The main problems and future research directions are also further proposed. Efforts should be focused on the challenges of the technology, cost, and environmental protection in the application process to achieve industrial application, and ultimately committed to sustainable and green development goals, and promote the sustainable management and conservation of resources.
近年来，煤气化行业迅速发展，成为先进清洁煤化工领域最有前途的技术之一。因此，煤气化细渣（CGFS）的年排放量不断增加。CGFS 的现状被认为是气化厂的一种恶名昭著的废物，被粗暴地填埋或堆积在渣场，导致大量土地资源浪费、危险元素释放和众多污染问题。尽管 CGFS 被归类为工业固体废物，但它独特的物理和化学性质使其成为不可忽视的有价值资源。本文重点介绍 CGFS 的资源利用技术和环境影响。CGFS 不同成分的资源利用实现了从废物到有价值物质的演变。此外，在 CGFS 的处置和利用过程中，其环境影响不容忽视。还进一步提出了主要问题和未来的研究方向。应集中精力解决技术、成本和环境保护方面在应用过程中的挑战，以实现工业应用，最终致力于可持续和绿色发展目标，并促进资源的可持续管理和保护。
