飞灰逆流循环梯度水洗系统的工程应用
中洁蓝环保科技有限公司, 北京市 102218
| 摘 要： | 介绍了飞灰逆流循环梯度水洗脱氯的工艺技术，并在工程项目实践出飞灰水洗技术的脱毒效果。本工艺技术包含飞灰储存系统、水洗系统、水质净化系统、蒸发分质结晶系统、烘干入窑系统以及尾气处理系统。脱毒后的飞灰氯含量≤1%，产生的副产盐氯化钠、氯化钾符合中国国家标准，满足“无害化、减量化、资源化”经济理念，符合中国环保政策和可持续发展要求。系统设备的投资成本主要取决于主体设备的选择、工艺复杂度和自动化水平，飞灰水洗单位处理成本约 400-800 元/吨灰。飞灰逆流循环梯度水洗系统的工程应用具有显著的长期价值以及经济效益和社会效益。 |
| 关 键 词： | 飞灰; 逆流循环梯度水洗脱氯; 脱毒; 氯化钠; 氯化钾 |
| DOI： | 10.57237/j.wjese.2026.02.002 |
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收稿日期: 2026-08-25
接受日期: 2026-09-24
在线出版日期: 2026-10-08
Engineering Application of Counter‑Current Circulating Gradient Water‑Washing System for Fly Ash
Zhongjielan Environmental Technology Co. Ltd. Beijing 102218, China
| Abstract: | This paper introduces the counter‑current circulating gradient water‑washing dechlorination process for fly ash. The technology integrates fly ash storage, water washing, water purification, evaporative fractional crystallization, drying and kiln feeding, and tail gas treatment systems.Engineering practices prove the detoxification effect of fly ash water‑washing technology: the chlorine content of detoxified fly ash is controlled within ≤1%, and the generated by‑product sodium chloride and potassium chloride comply with national standards, satisfying the economic concept of “harmless treatment, volume reduction and resource utilization”. It complies with China’s environmental protection policies and requirements for sustainable development. The investment cost of the system and equipment mainly depends on the selection of main equipment, process complexity and automation level. The unit treatment cost of fly ash water washing is approximately 400-800 RMB per ton of ash. The engineering application of the countercurrent circulating gradient water washing system for fly ash demonstrates significant long-term value, economic benefits and social benefits. |
| Keywords: | Fly Ash; Counter‑current Circulating Gradient Water‑washing Dechlorination; Detoxification; Sodium Chloride; Potassium Chloride |
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