Thermogravimetric analysis of the co-combustion of coal and paper mill sludge

Liao, Yanfen; Ma, Xiaoqian

doi:10.1016/j.apenergy.2010.05.008

Cited by 199 publications

(64 citation statements)

References 27 publications

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“…There are many methods of the combustion process. This study that researches methods in combination with coal combustion characteristics by thermal analysis techniques, can provide strongly theoretical support for stabilizing the low calorific value fuel combustion, and offer energy use and low calorific value boiler burning some guidance significance [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Assessment of Combustion Characteristics of Blends of Lignite Coals with Coal Gangue

Song¹,

Wen²,

Li³

et al. 2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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Abstract. In this paper, the co-combustion behaviour of lignite coal with coal gangue and coal are investigated by a thermogravimetric analysis (TGA) in the temperature range from ambient temperature to 1000 ℃. The thermal characteristics and kinetics of lignite coal, coal gangue and their blends are evaluated under combustion conditions using a non-isothermal thermogravimetric method (TGA). Lignite coal is blended with coal gangue in the range of 25-75 wt. % to evaluate their cocombustion behaviour. Such attempts of Combustion characteristics index under different proportions of analysis may help to identify appropriate blend proportion for a given coal gangue and to derive some specific advantages with respect to particular combustion practice.

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Section: Introductionmentioning

confidence: 99%

Thermogravimetric Assessment of Combustion Characteristics of Blends of Lignite Coals with Coal Gangue

Song¹,

Wen²,

Li³

et al. 2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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“…The second mass loss stage occurred from about 390 to 560 °C and was mainly due to the further decomposition and burning of lignin and afterwards, the combustion of chars Fan et al 2016). Above 600 °C, the DTG curve of paper had the third mass loss stage until 800 °C, which was attributed to the degradation of calcium carbonate and other minerals (Liao and Ma 2010). The combustion of textiles showed that the maximum rate of mass loss at 345.4 °C was attributable to the devolatilization and burning of cotton (mainly composed of cellulose, the main component of textiles).…”

Section: Mswmentioning

confidence: 99%

Co-Combustion Characteristics and Kinetic Analyses of Biomass Briquette and Municipal Solid Waste in N2/O2 and CO2/O2 Atmospheres

et al. 2017

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The thermal behavior of cotton straw briquette (CSB), municipal solid waste (MSW), and their blends was investigated using a thermogravimetric analyzer under N2/O2 and CO2/O2 atmospheres at 20 °C/min from an ambient temperature to 1000 °C. The kinetics and synergistic interaction between MSW and CSB in the co-combustion process were evaluated. The results indicated that MSW blended with CSB improved the ignition and burnout characteristics of the blends, while decreasing the comprehensive combustion characteristics index. The suitable proportions of CSB were less than 60% and 40% separately under 80N2/20O2 and 80CO2/20O2 atmospheres, respectively. The inhibitory effect of CO2 induced burnout temperature and residual mass increased, and the high-temperature stage reaction varied. Kinetic analysis of the blends indicated that blending with CSB could promote MSW combustion in the first reaction stage, while the second and third decomposition stages were complicated because of the synergistic interaction between MSW and CSB in the co-combustion process. The nth order reaction model fit the mass loss of theca-combustion process for the blends very well.

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“…model-free for which the rate of decomposition must follow Eq. (1) [9], [10] .The iso-conversional method is more widely used compared to the fitting models as it provides the ability to compute kinetic parameters without prefixing the reaction order [4], [10], [14].. In contrast, the model-fitting kinetic method generally involves the use of a single heating rate, which will result in a variation of activation energy values due to mass and heat transfer effects [9] .…”

Section: -P2mentioning

confidence: 99%

“…In the model free method the rate of heterogeneous solidstate reactions described in Eq. (1), as suggested by [4], [9]- [11], [14], can be transformed into a nonisothermal rate expression, as a function of temperature at constant heating rate β,…”

Section: -P2mentioning

confidence: 99%

“…This observation is believed to be related to the content and also to the structure of the samples which is a direct result of the process used in the sewage treatment plants [3] . Comparing coal which is a common power plant solid fuel with the sewage sludge used here, the activation energy of sewage sludge is noticeable higher than coal [4], [10], [14] and lower than animal manure (AM) and the organic fraction of municipal solid waste (OFMSW) [9]. To calculate the reaction order of the sewage sludge, the ln [-ln (1 -α (T))] vs. ln β relationship was plotted as shown in Fig.…”

Section: -P2mentioning

confidence: 99%

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A Non-isothermal Thermogravimetric Kinetic Analysis of Malaysian Sewage Sludge

Abbas

Aris

Sulaiman

et al. 2014

MATEC Web of Conferences

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Abstract. Dewatered sewage sludge is one of the largest contributors of waste material in Malaysia and it indirectly elevates local environmental problems. Previous studies have indicated sewage sludge as a potential alternative fuel based on its higher heating values. To explore sewage sludge as an alternative solid fuel will not only address energy demand issues, it will also mitigate long term disposal problems related with the waste material. Further information on combustion characteristics of this material is required before any links to power generation applications can be established. In this work the combustion characteristics of Malaysian sewage sludge was studied by means of thermogravimetric analysis (TGA) under different heating rates (10, 20 30 and 40 K/min). Non-isothermal thermogravimetric data were used to assess the kinetics of the combustion of sewage sludge by the application of Ozawa-Flynn-Wall and Vyazovkin kinetic models. The average activation energies were found to be 82 and 79 kJ/ mol respectively. The average reaction order corresponding to sewage sludge combustion was 0.11.

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Thermogravimetric analysis of the co-combustion of coal and paper mill sludge

Cited by 199 publications

References 27 publications

Thermogravimetric Assessment of Combustion Characteristics of Blends of Lignite Coals with Coal Gangue

Thermogravimetric Assessment of Combustion Characteristics of Blends of Lignite Coals with Coal Gangue

Co-Combustion Characteristics and Kinetic Analyses of Biomass Briquette and Municipal Solid Waste in N2/O2 and CO2/O2 Atmospheres

A Non-isothermal Thermogravimetric Kinetic Analysis of Malaysian Sewage Sludge

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