An assessment on co-combustion characteristics of Chinese lignite and eucalyptus bark with TG–MS technique

Yu, Dong; Chen, Meiqian; Wei, Yuanhang; Niu, Shibo; Xue, Feng

doi:10.1016/j.powtec.2016.03.016

Cited by 51 publications

(18 citation statements)

References 38 publications

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“…The second stage was from 407.12 to 501.31°C. The similar phenomenon was shown in the co-combustion characteristics of Chinese lignite and eucalyptus bark [9]. The weight loss peak of the first stage centered on 343.0°C (À26.48%/min) was more obvious than the second one centered on 468.2°C (À10.51%/min).…”

Section: Thermogravimetric Analysis Of Er and Pmssupporting

confidence: 79%

“…Combustion and co-combustion of renewable energy sources have received a lot of attention in recent years due to their flexibility, high combustion efficiency, high heat transfer and low emission of NO X , SO X and CO 2 neutral [8]. Yu et al [9] studied the cocombustion characteristics of Chinese lignite and eucalyptus bark with TG-MS technique. There were two peaks of eucalyptus bark and the burnout temperature of it was the range of 458-475°C.…”

Section: Introductionmentioning

confidence: 99%

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Thermogravimetric analysis of the co-combustion of eucalyptus residues and paper mill sludge

Cai

Fang

et al. 2016

Applied Thermal Engineering

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Section: Thermogravimetric Analysis Of Er and Pmssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis of the co-combustion of eucalyptus residues and paper mill sludge

Cai

Fang

et al. 2016

Applied Thermal Engineering

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“…While most blends show that combustion takes place between 200 °C and 400 °C in one clear episode, the plastic itself and its blends with lignite reveal one more peak between 400 °C and 550 °C, suggesting that the combustion occurs in two stages. These two stages of the combustion are attributed by the scholars to the volatilization of the hemicellulose and cellulose components (first stage) and the lignin decomposition (second stage) [12,22,24]. However, coal demonstrates its combustion reactions somehow in one single phase [6,11,17].…”

Section: Combustion Characteristics Of the Lignite Blendsmentioning

confidence: 99%

Combustion behaviour of different types of solid wastes and their blends with lignite

2018

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The combustion characteristics of blends of lignite with various organic waste materials are evaluated in this study in order to assess their potential for energy recovery. Different types of municipal solid waste (i. e. paper, plastic, textile, organic), as well as sewage sludge and agri-residues (sunflower shells) samples were collected from the Western Macedonia region, northern Greece. Mixtures of each one of them with lignite in different proportions (30-50-70 wt.%) were prepared. Proximate analysis, calorific value determination, and thermogravimetry (TGA/ DTG) were performed. Thermal parameters such as ignition temperature, total weight loss, maximum rate of weight loss, peak and burnout temperatures and burnout time were determined from the TG/DTG profiles of the raw materials and their blends. The combined utilization of proximate analysis, calorific value determination and TG/DTG method proved to be an effective method for a preliminary assessment of the energetic potential of raw solid waste "combustible" materials and their blends with lignite. The analytical results revealed that most of the blends are promising for energy recovery. Regarding the raw wastes, sunflower shells were the most reactive. A non-synergistic effect was found for the blends. Organic and sewage sludge blends revealed the lowest combustibility, which is attributed to the high content of inorganic matter and the heterogeneity of these two types of wastes.

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“…Equation 7has no exact solution, and there are two main mathematical approaches to solve this equation and obtain the kinetics data from the thermogravimetric analysis: (1) model-free methods (isoconversional) and (2) model-based methods [48]. The Coats-Redfern method, a modelbased method, has been extensively applied to model the kinetics of biomass pyrolysis and combustion since it is considered more appropriate for calculation of the kinetic parameters [9,[26][27][28]41,44,[49][50][51]. For this reason, this approach was employed in this work to study pine wood kinetics in oxidative and non-oxidative atmospheres.…”

Section: Kinetics Analysismentioning

confidence: 99%

Thermal Conversion of Pine Wood and Kinetic Analysis under Oxidative and Non-Oxidative Environments at Low Heating Rate

Fraga¹,

Silva²,

Teixeira³

et al. 2020

The First World Energies Forum—Current and Future Energy Issues

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Atmosphere is one of the most significant factors in the thermal decomposition of biomass. In domestic or industrial biomass boilers, ambient oxygen concentration varies through time, which means that the reaction will change from pyrolysis to combustion. In this way, to analyze and compare each thermochemical conversion process, a simple analytical method, the non-isothermal thermogravimetric analysis, is carried out under oxidative (air) and non-oxidative (argon) environments at 10 °C/min and as a function of different flow rates (2 to 150 mL/min). Additionally, this work was complemented by a kinetic analysis considering a first-order reaction to each conversion stage and using the Coats–Redfern method. The effect of the atmosphere on the thermal decomposition behavior was evident. It was observed that the thermal decomposition of pine wood particles varied from three to two stages when the oxidative or inert atmosphere was applied. The presence of oxygen changes the mass loss curve mainly at high temperature, around 350 °C, where char reacts with oxygen. The maximum mass loss rate from experiments with the oxidative atmosphere is 15% higher than in an inert atmosphere, the average char combustion rate is approximately 5 times higher and the heat released reaches levels 3.44 times higher than in an inert atmosphere. Ignition and combustion indexes were also defined, and results revealed that particles are ignited faster under oxidative atmosphere and that, on average, the combustion index is 1.7 times higher, which reinforces the more vigorous way that the samples are burned and how char is burned out faster in the experiments with air. Regarding the kinetics analysis, higher activation energies, and consequently, lower reactivity was obtained under the oxidative atmosphere for the second stage (~125 kJ/mol) and under the inert atmosphere for the third thermal conversion stage (~190 kJ/mol).

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An assessment on co-combustion characteristics of Chinese lignite and eucalyptus bark with TG–MS technique

Cited by 51 publications

References 38 publications

Thermogravimetric analysis of the co-combustion of eucalyptus residues and paper mill sludge

Thermogravimetric analysis of the co-combustion of eucalyptus residues and paper mill sludge

Combustion behaviour of different types of solid wastes and their blends with lignite

Thermal Conversion of Pine Wood and Kinetic Analysis under Oxidative and Non-Oxidative Environments at Low Heating Rate

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