| 不同来源污泥混燃特性及其综合燃烧性能评价 |
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| 引用本文： | 刘敬勇,傅杰文,孙水裕,卓钟旭,郭家宏,孙健,王玉洁,李晓瑜.不同来源污泥混燃特性及其综合燃烧性能评价[J].环境科学学报,2016,36(3):940-952. |
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| 作者姓名： | 刘敬勇 傅杰文 孙水裕 卓钟旭 郭家宏 孙健 王玉洁 李晓瑜 |
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| 作者单位： | 1. 广东工业大学环境科学与工程学院, 广州 510006;2. 广东工业大学环境健康与污染控制研究院, 广州 510006,广东工业大学环境科学与工程学院, 广州 510006,广东工业大学环境科学与工程学院, 广州 510006,广东工业大学环境科学与工程学院, 广州 510006,1. 广东工业大学环境科学与工程学院, 广州 510006;2. 广东工业大学环境健康与污染控制研究院, 广州 510006,1. 广东工业大学环境科学与工程学院, 广州 510006;2. 广东工业大学环境健康与污染控制研究院, 广州 510006,1. 广东工业大学环境科学与工程学院, 广州 510006;2. 广东工业大学环境健康与污染控制研究院, 广州 510006,广东工业大学环境科学与工程学院, 广州 510006 |
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| 基金项目： | 国家自然科学基金(No.51308132);广东省科技计划(No.2014A050503063,2015A020215033,2015B020235013);广东省高层次人才特殊支持计划(No.2014TQ01Z248);广州市科技计划项目(No.201510010033) |
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| 摘 要： | 采集了广州两种生活污水污泥、两种工业污泥(印染污泥和造纸污泥),利用热重法对这4种不同来源的单一干污泥及混合污泥在不同条件下进行实验研究,同时计算了试样的4个燃烧特性指数,获得了污泥燃烧的动力学参数.实验结果表明,各污泥燃烧阶段主要分为水分析出、挥发分析出、固定碳的燃烧和无机盐类挥发分解4个阶段,其中挥发分的析出和燃烧制约着污泥燃烧整个过程.市政污泥S1与其他类污泥混烧过程中,各污泥有较明显的交互作用,其中市政污泥S1与其他3种污泥按照1∶1质量比混合后,其挥发特性指数D提高较明显,而综合燃烧特性指数S改变不明显.两种市政污泥8∶2质量比混合后,其混合样燃烧性能明显提高,其中综合燃烧指数提高接近2倍.采用积分法(Coats-Redfern方程)计算得到各燃烧阶段反应的机理方程及相应的活化能参数,发现各试样燃烧反应级数不尽相同,其中市政污泥S1与其他污泥混合后活化能E普遍降低,与样品S2混燃的活化能降低最多,对燃烧最有利.
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| 关 键 词： | 市政污泥 混合燃烧 热重分析 燃烧特性 动力学模型 |
| 收稿时间： | 5/2/2015 12:00:00 AM |
| 修稿时间： | 7/6/2015 12:00:00 AM |
Co-combustion of various sources of sludge and its combustion performance |
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| LIU Jingyong,FU Jiewen,SUN Shuiyu,ZHUO Zhongxu,KUO Jiahong,SUN Jian,WANG Yujie and LI Xiaoyu.Co-combustion of various sources of sludge and its combustion performance[J].Acta Scientiae Circumstantiae,2016,36(3):940-952. |
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| Authors: | LIU Jingyong FU Jiewen SUN Shuiyu ZHUO Zhongxu KUO Jiahong SUN Jian WANG Yujie and LI Xiaoyu |
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| Institution: | 1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China,School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China,School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China,School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China,1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China,1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China,1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China and School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | Two kinds of sewage sludge samples and two kinds of industrial sludge samples (dyeing sludge and papermaking sludge) were collected in Guangzhou. Those four kinds of sludge samples and their mixtures were estimated by thermogravimetric analysis (TGA) under various conditions. Four combustion indexes and their kinetic parameters were also calculated. Experimental results showed there were four combustion steps for sludge samples found as moisture exhalation, volatile exhalation, fixed carbon combustion and exhalation of inorganic salt. Thus, volatile exhalation stage was considered as the dominating step of sludge combustion in this study. When blending sewage sludge S1 with other kinds of sludge, it was discovered that a significant interaction among those four sludge samples. Volatile characteristic index (D) increased, but the combustion performance (S) varied insignificantly while the sewage sludge S1 mixed with other sludge samples with the ratio of 1:1. Nevertheless, the combustion performance could improve when sewage sludge samples were mixed, and the comprehensive combustion index also increased up to 2 times. On the other hand, Coats-Redfern equation was adopted to understand both reaction equations and the kinetic parameters (E) during various combustion stages. Calculation results showed that different reaction orders were found under combustion of various mixtures. The activation energy decreased with the increase of sewage sludge S1 in mixed sample. Notably, the activation energy reduced significantly during co-combustion of sludge with S2 sample, and it contributed the thermal treatment of sludge via combustion. |
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| Keywords: | sewage sludge co-combustion thermogravimetric analysis combustion characteristics kinetics model |
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