垃圾衍生燃料掺混污泥共热解特性及动力学分析

doi:10.16085/j.issn.1000-6613.2017-0784

化工进展 ›› 2017, Vol. 36 ›› Issue (10): 3904-3910.DOI: 10.16085/j.issn.1000-6613.2017-0784

垃圾衍生燃料掺混污泥共热解特性及动力学分析

林顺洪^1,2, 李伟^1,2, 柏继松^1,2, 吕全伟^1,2, 江辽^1,2, 莫榴^1,2, 李玉^1,2

1. 重庆科技学院机械与动力工程学院, 重庆 401331;
2. 重庆科技学院重庆垃圾焚烧发电技术研究院, 重庆 401331

收稿日期:2017-04-28 修回日期:2017-06-22 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: 柏继松,副教授,研究方向为固体废弃物能源化利用技术.
作者简介:林顺洪(1973-),男,硕士,教授,研究方向为固体废弃物能源化利用技术.E-mail:dim001@163.com.
基金资助:
重庆市生活垃圾资源化处理工程技术研究中心能力提升项目（cstc2014pt-gc20001）及基于机械炉排的生活垃圾焚烧及气化燃烧关键技术成果转化项目（KJZH14108）。

Co-pyrolysis characteristics and kinetic analysis of refuse derived fuel (RDF) blends sludge

LIN Shunhong^1,2, LI Wei^1,2, BAI Jisong^1,2, LÜ Quanwei^1,2, JIANG Liao^1,2, MO Liu^1,2, LI Yu^1,2

1. College of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;
2. Chongqing Waste to Energy Research & Technology Institute, Chongqing University of Science and Technology, Chongqing 401331, China

Received:2017-04-28 Revised:2017-06-22 Online:2017-10-05 Published:2017-10-05

摘要/Abstract

摘要： 利用热重-红外联用分析仪（TG-FTIR）研究了垃圾衍生燃料（RDF）、污泥及混合热解的反应动力学和气体产物析出特性。研究结果表明，RDF与污泥混合热解过程存在协同作用。当污泥的掺混比例为50%时，整个热解过程表现为促进作用，且在500～1000℃温度段的促进效果最为明显。采用Coats-Redfern法对热解过程进行动力学分析发现，RDF与污泥混合热解反应在低温段（240～380℃）和高温段（670～740℃）符合2级反应规律，而在中温段（430～540℃）符合1级反应规律；相对于RDF单独热解，RDF掺混污泥共热解的活化能明显降低。FTIR分析发现，RDF掺混污泥共热解对CO₂和CO的析出影响不大，对CH₄的产生有明显促进作用。同时，共热解也导致HCl、NH₃和HCN等污染物析出增加。本研究结果可为RDF和污泥共热解工艺的开发与设计提供数据支撑。

关键词: 垃圾衍生燃料, 污泥, 热重-红外联用, 热解, 动力学, 气相产物

Abstract: In this paper,the reaction kinetic and gas product characteristics of pyrolysis of refuse derived fuel(RDF),sludge and their mixture were studied by using thermogravimetric analysis-Fourier transform infrared spectrometer(TG-FTIR). The results showed that there was synergistic effect in the co-pyrolysis process of sludge and RDF. When the proportion of sludge is 50%,the whole pyrolysis process presented promotion effect,and the effect is the most obvious at the temperature range from 500℃ to 1000℃. The Coats-Redfern method was used to analyze the kinetic parameters of the pyrolysis process. The results indicated that the co-pyrolysis reaction of RDF and sludge in the low temperature stage(240-380℃)and high temperature stage(670-740℃)conforms to the second-order reaction law,while meets the first-order reaction law in the middle temperature stage (430-540℃). Compared with RDF pyrolysis,the activation energy of co-pyrolysis of RDF and sludge decreased obviously,which indicated that co-pyrolysis could promote the pyrolysis reaction process. FTIR analysis showed that the co-pyrolysis of RDF and sludge has little effect on the precipitation of CO₂ and CO,but promotes the production of CH₄. Meanwhile,the co-pyrolysis results in an increase in the precipitation of HCl,NH₃ and HCN as well. The results of this study could provide data support for the development and design of the co-pyrolysis process of RDF and sludge.

Key words: refuse derived fuel(RDF), sludge, TG-FTIR, pyrolysis, kinetic, gas product

中图分类号:

X799.3

林顺洪, 李伟, 柏继松, 吕全伟, 江辽, 莫榴, 李玉. 垃圾衍生燃料掺混污泥共热解特性及动力学分析[J]. 化工进展, 2017, 36(10): 3904-3910.

LIN Shunhong, LI Wei, BAI Jisong, LÜ Quanwei, JIANG Liao, MO Liu, LI Yu. Co-pyrolysis characteristics and kinetic analysis of refuse derived fuel (RDF) blends sludge[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3904-3910.

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垃圾衍生燃料掺混污泥共热解特性及动力学分析

Co-pyrolysis characteristics and kinetic analysis of refuse derived fuel (RDF) blends sludge

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