污泥水热炭与生活垃圾混燃特性和交互作用研究  

Co-combustion characteristics and interaction of sludge hydrothermal carbon and municipal solid waste

作　　者：齐佳楠 张瑛华[1] 蓝海鹏 刘海威[1] QI Jianan;ZHANG Yinghua;LAN Haipeng;LIU Haiwei(China Enfi Engineering Group,Beijing 100038,China)

机构地区：[1]中国恩菲工程技术有限公司,北京100038

出　　处：《热力发电》2025年第2期154-160,共7页Thermal Power Generation

基　　金：中国中冶重大研发项目(YG2320)。

摘　　要：为考察掺混比例对污泥水热炭和生活垃圾混燃特性的影响规律,揭示2种物料混燃的交互作用,利用热重分析仪测试污泥水热炭、生活垃圾以及混合样品的燃烧特性,并采用Coats-Redfern法对样品的燃烧动力学特性进行分析。基于混合样品实际燃烧特性与理论燃烧特性的差异,揭示2种物料混燃过程中的交互作用。研究结果表明:随着污泥水热炭掺混比例的增加,混合样品的着火温度和燃尽温度降低,但样品的燃烧速率也随之下降,导致综合燃烧特性指数减小;污泥水热炭的掺混比例从0增加到80%,样品的综合燃烧特性指数减小71.8%;污泥水热炭掺混比例的增加使混合样品挥发分燃烧阶段的活化能减小,而焦炭燃烧阶段的活化能增加;污泥水热炭与生活垃圾混燃存在显著的交互作用,对挥发分的燃烧起到抑制作用;在污泥水热炭掺混比例20%~80%,交互作用使混合物综合燃烧特征指数平均降低12.9%。该结论可为生活垃圾焚烧厂掺烧污泥水热炭的工况调控以及ACC自控系统的设计,提供数据参考和理论依据。To investigate the effect of blending ratio on co-combustion characteristics of sludge hydrothermal carbon and municipal solid waste,and reveal the interaction between the two materials,thermogravimetric analyzer is used to test the combustion characteristics of sludge hydrothermal carbon,municipal solid waste and mixed samples.The combustion kinetics of the samples were analyzed by Coats-Redfern method.Based on the difference between the experimental combustion characteristics and the theoretical combustion characteristics of the mixed samples,the interactions between the two materials was revealed.The results showed that,the ignition temperatures and burnout temperatures of the mixed samples decreased with the increase of sludge hydrothermal carbon blending ratio,but the combustion rate also decreased,resulting in a decrease of the comprehensive combustion characteristic index.As the blending ratio of sludge hydrothermal carbon increased from 0%to 80%,the comprehensive combustion characteristic index of mixed sample decreased by 71.8%.With the increase of sludge hydrothermal carbon blending ratio,the activation energy of volatile combustion stage decreased,while the activation energy of char combustion stage increased.There was a significant interaction between sludge hydrothermal carbon and municipal solid waste,which can inhibit the combustion of volatiles.In the blending ratio range of 20%~80%,the comprehensive combustion characteristic index of the mixture decreased by 12.9%on average.The research results can provide data reference and theoretical basis for the control of the working condition and the design of ACC automatic control system in the municipal solid waste incineration plant.

关 键 词：污泥水热炭 生活垃圾 混燃 动力学 交互作用 

分 类 号：X799.3[环境科学与工程—环境工程] X703