Ignition and Kinetics Analysis of Coal Combustion in Low Oxygen Concentration

Liu, Y.; Wang, C.; Che, Defu

doi:10.1080/15567031003645585

Cited by 18 publications

(10 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…D i represent the ignition performance of fuels, which reflects how difficult or easy and how fast and slow the fuel gets ignited. D f represents the burnout performance of fuels, which mainly depends on how fast the char residue burns (Parthasararthy et al 2013) Ignition index (D i ) and burnout index (D f ) are calculated as (Parthasararthy et al 2013;Liu et al 2012;Aich et al 2019a).…”

Section: Theorymentioning

confidence: 99%

See 1 more Smart Citation

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Aich

Nandi

Bhattacharya

2020

Int J Coal Sci Technol

View full text Add to dashboard Cite

This work presents the analysis of combustion characteristics of high ash Indian coal (28%-40%) collected from different mines of Singaurali coalfield, India. All the coal samples were characterized by proximate and gross calorific value analysis. Combustion performance of the coals were characterised using thermo-gravimetric analysis to identify the burning profile of individual coals. Various combustion kinetic parameters such as ignition temperature, peak temperature and burnout temperature, ignition index and burnout index, combustion performance index plus rate and intensity index of combustion process, activation energy were determined to analyse the combustion behaviour of coal. Further all these combustion properties were compared with the volatile matter, ash, fixed carbon and fuel ratio of each coal. Theoretical analysis shows that with increase in ash content, combustion performance initially increases and later descends. Further, coal with (25 ± 1.75)% volatile matter, 20%-35% ash and fuel ratio 1.4-1.5 were found to be optimum for coal combustion.

show abstract

Section: Theorymentioning

confidence: 99%

“…Based on the TGA-DTG analysis, two comprehensive index-parameters namely comprehensive combustibility index (S, wt% per min 2°C3 and rate and intensity index of combustion process (H f ,°C) can be estimated by Eqs. (3-4) (Parthasararthy et al 2013;Liu et al 2012;Aich et al 2019a).…”

Section: Theorymentioning

confidence: 99%

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Aich

Nandi

Bhattacharya

2020

Int J Coal Sci Technol

View full text Add to dashboard Cite

show abstract

“…The oxidation of coals and chars have been successfully described by the following single step, first order, global reaction model (He et al, 2002;Liu et al, 2012;Sima-Ella et al, 2005;Wang et al, 2012): where w is the instantaneous weight of the sample and k(T) is the apparent combustion reaction rate constant, which can be expressed by:…”

Section: Kinetic Analysismentioning

confidence: 99%

Comparison Between Combustion Behavior of Solid Fuels and Their Chars Under Oxy-Fuel Conditions

Inmas

Kulah

Selçuk

2014

Combustion Science and Technology

View full text Add to dashboard Cite

The combustion characteristics of petcoke and imported coal and their respective chars under oxy-fuel (21% O 2 /79% CO 2 ) and oxygen-enriched oxy-fuel (30% O 2 /70% CO 2 ) environments were investigated by using non-isothermal thermogravimetric method coupled with a Fourier transform infrared spectrometer. Experimental results reveal that at elevated oxygen levels, profiles shift to lower temperature zone, peak and burnout temperatures decrease, weight loss rate increases significantly, and complete combustion is achieved at lower temperatures. The ignition, peak, and burnout temperatures of chars are found to be higher than those of their parents due to absence of volatile matter and higher ash content left in the char. An Arrhenius-type kinetic model was used to determine the values of the kinetic parameters of the combustion of the fuels and their chars. Values of activation energies and Arrheniusconstants predicted by the model show that chars are less reactive than their parent fuels due to the absence of volatiles.

show abstract

“…The results showed that with the increase in the proportion of impurities, ignition temperature, burned temperature significantly improved; combustion characteristics of index clearly decreased; and combustion process can be described by a diffusion kinetic equation. Liu et al [10] studied the combustion of coals in low oxygen concentration, by the use of TG-DTG. Experimental results show that TG-DTG and DSC curves of four studied coals shift to a higher temperature zone in lower oxygen concentration.…”

Section: Introductionmentioning

confidence: 99%

Determination of kinetic parameters of different origin coals using software

Ertunc

Kök

2014

J Therm Anal Calorim

View full text Add to dashboard Cite

In this study, combustion characteristics and kinetics of three coal samples are examined. A series of thermogravimetry (TG-DTG) and differential scanning calorimetry (DSC) measurements were carried out in nonisothermal conditions at heating rates of 5, 10, and 15 K min -1 . Reaction regions, peak and burn-out temperatures, mass loss, and heat of reactions of the samples were determined for each heating rate from TG-DTG and DSC curves. A variety of computational methods, available in the software developed, were applied to experimental data for the evaluation of the kinetic parameters of the coal samples, and the results are discussed.

show abstract

Ignition and Kinetics Analysis of Coal Combustion in Low Oxygen Concentration

Cited by 18 publications

References 21 publications

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Comparison Between Combustion Behavior of Solid Fuels and Their Chars Under Oxy-Fuel Conditions

Determination of kinetic parameters of different origin coals using software

Contact Info

Product

Resources

About