水泥窑协同处置高氯危废过程中氯的转化及其对熟料的影响

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中图分类号：TQ172.6 文献标志码：ADOI：10.13338/j.issn.1674-649x.2025.03.014

The phase changes and chlorine transformation in the collaborative treatment of high-chlorine solid waste in cement

REN Zhiyuan1 ，XU Xiaoping² ，YAO Peiqi1 ，YANG Hongxing² ， GU Changbao² ，ZHANG Xiaodong² ，CHANG Wei1

（1.School of Environmental and Chemical Engineering，Xi'an Polytechnic University，Xi'an 710048，China; 2. Jidong Heidelberg（Fufeng County）Cement Co.Ltd.，Fufeng，Shaanxi 72l0oo，China）

Abstract To fully utilize cement kilns for the co-processing of high-chlorine hazardous wastes，a tube furnace was used to simulate the clinker calcination process. The study analyzed the transformation of chlorine and its impact on clinker at diferent temperatures.The research utilized X-ray diffraction，scanning electron microscopy，ion chromatography，and energy-dispersive X-ray spectrometry for detection and analysis. The results revealed that when the temperature exceeded 1 100∘C ，chlorides could react with calcium，aluminum，and iron compounds in cement clinker to form chloride solid solutions. This lower-melting-point solid solution increased the presence of liquid phases，exacerbating clinker formation issues.Furthermore，the study found that temperature significantly influenced the distribution of chlorine. With increasing incineration temperature，the proportion of chlorine entering the flue gas and fly ash increased，making chlorinated substances more prone to corroding the tertiary preheater，kiln exit gas chamber，and the upgoing duct. Hence，it is imperative to pay special attention to chlorine management under high-temperature conditions to mitigate the aforementioned issues.

Keywords cement kiln; co-processing of solid waste； scale formation; chlorine transformation; phase transformation

0引言

目前城市工业化飞速发展带来的大量固体废物对环境产生了不利影响[1-2]，污染物的排放控制作为减少环境污染的关键措施，成为实现生态文明建设目标的重要前提[3-4]。（剩余9768字）