垃圾焚烧飞灰熔融过程中氯元素行为研究

doi:10.19841/j.cnki.hjwsgc.2025.01.015

环境卫生工程 ›› 2025, Vol. 33 ›› Issue (1): 110-115.doi: 10.19841/j.cnki.hjwsgc.2025.01.015

• 危险废物利用、处理与处置 • 上一篇下一篇

垃圾焚烧飞灰熔融过程中氯元素行为研究

1.北京中科润宇环保科技股份有限公司；2. 慈溪中科众茂环保热电有限公司；3. 中国城市环境卫生协会

出版日期:2025-03-04 发布日期:2026-03-05

Study on Chlorine Behavior in the Melting Process of MSWI Fly Ash

1. Beijing China Sciences Runyu Environmental Protection Technology Co. Ltd.; 2. Cixi Zhongke Zhongmao Environmental Protection Thermal Power Co. Ltd.; 3. China Association of Urban Environmental Sanitation

Online:2025-03-04 Published:2026-03-05

摘要/Abstract

摘要： 高温熔融是生活垃圾焚烧飞灰减量化、无害化、资源化的有效处理技术之一。为探究高温熔融过程飞灰中氯元素赋存形态，对飞灰成分进行XRF分析，并开展水洗和水洗后煅烧实验，研究了熔渣碱度、熔盐成分、反应温度和反应时间这4个因素对飞灰熔融玻璃渣中氯元素的分配行为。结果表明：CaCl2在熔渣中溶解度较高，低碱度、高温（1 450 ℃）、较短反应时间（1 h）有利于降低玻璃渣中的氯含量、提高其品质。NaCl和KCl在熔渣中的溶解度均低于CaCl2，其中KCl在熔渣中的溶解度最低。

关键词: 垃圾焚烧飞灰, 熔融, 熔渣, 氯元素, 碱度

Abstract: High temperature melting is one of the effective treatment technologies of fly ash reduction, harmless and resource utilization in domestic waste incineration. In order to investigate the occurrence form of chlorine in fly ash during high temperature melting process, fly ash composition was analyzed by XRF, and experiments of washing and calcination after washing were carried out. The distributive behavior of chlorine element in fly-ash fused slag was studied from four aspects of slag alkalinity, molten salt composition, reaction temperature and reaction time. Result showed that calcium chloride has a high solubility in slag, and low alkalinity, high temperature (1 450 ℃), as well as short reaction time (1 hour) were beneficial to reduce the chlorine content in slag and could improve the quality. Both sodium chloride and potassium chloride had lower solubility in slag than calcium chloride, and potassium chloride had the lowest solubility in slag.

Key words: 　waste incineration fly ash, melting, fused slag, chlorine element, alkalinity

栗　博, 刘玉坤, 熊新宇, 张　淼, 段盼巧. 垃圾焚烧飞灰熔融过程中氯元素行为研究[J]. 环境卫生工程, 2025, 33(1): 110-115.

LI Bo, LIU Yukun, XIONG Xinyu, ZHANG Miao, DUAN Panqiao. Study on Chlorine Behavior in the Melting Process of MSWI Fly Ash[J]. Environmental Sanitation Engineering, 2025, 33(1): 110-115.

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垃圾焚烧飞灰熔融过程中氯元素行为研究

Study on Chlorine Behavior in the Melting Process of MSWI Fly Ash

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