Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (12): 12-17.doi: 10.3969/j.issn.1000-565X.2013.12.003

• Chemistry,Chemical & Energy Engineering • Previous Articles     Next Articles

Investigation into Co- Combustion Kinetics of Paper Mill Sludge and Straw via Thermogravimetric Analysis

Li Yu- zhong Ma Xiao- qian Xie Ze- qiong Cai Zi- lin   

  1. Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Higher Education Institutes,South China University ofTechnology,Guangzhou 510640,Guangdong,China
  • Received:2013-03-18 Revised:2013-08-21 Online:2013-12-25 Published:2013-11-19
  • Contact: 李玉忠(1976-)，男，高级工程师，博士生，主要从事高效低污染燃烧研究． E-mail:ecaneer@gmail.com
  • About author:李玉忠(1976-)，男，高级工程师，博士生，主要从事高效低污染燃烧研究．
  • Supported by:

    国家 “973” 计划项目(2011CB201500);中国博士后科学基金资助项目(2013M531845);广东省科技计划项目(2012B091000166);广州市重大科技专项计划项目(2008A1- D0011)

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Abstract:

In this paper,the combustion characteristics and the kinetics of paper mill sludge,straw and their mix-ture were investigated by means of comprehensive thermogravimetric analysis.The results indicate that (1) thereexist three obvious weightlessness peaks in the combustion curve of paper mill sludge,which correspond to themoisture exhalation,the combustion and exhalation of different volatiles,and the combustion of a small amount offixed carbon and nonflammable organic matters; (2) the ignition temperature of paper mill sludge is only 5.1 ℃higher than that of straw; (3) the addition of straw in the sludge has little effect on the ignition characteristics butsignificantly decreases the burnout temperature of the sludge; (4) the activation energies of sludge and straw firstdecrease and then increase with the increase of conversion rate,and vary in the ranges of 97.0 ～203.7kJ/mol and132.6 ～253.0kJ/mol,respectively; and (5) the average activation energy of the mixture of paper mill sludge andstraw does not monotonically increase with the dosage of paper mill sludge.

Key words: paper mill sludge, straw, combustion characteristic, activated energy, mechanism analysis

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