Studying the mechanisms of ignition of coal particles by TG-DTA

Chen, Yong; Mori, Shigekatsu; Pan, Wei‐Ping

doi:10.1016/0040-6031(95)02727-0

Cited by 140 publications

(78 citation statements)

References 7 publications

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“…Figures 4-5 show the results of thermogravimetric analysis. The ignition temperature is determined by the method of tangents and is marked "Onset" [6], it is worth noting that for brown coals, the ignition temperature of coals treated with a disintegrator is also higher than the ignition temperature of coals treated with a vibrating centrifugal mill, which correlates with the results obtained in experiments on a tubular furnace. However, the main process of thermal decomposition takes place more efficiently in coals processed on a disintegrator, which is characterized by a more complete burning out of the samples (Residual Mass) and a more abrupt energy release (DSC curve).…”

Section: Thermogravimetric Analysissupporting

confidence: 53%

Research of the chemical activity of microgrinding coals of various metamorphism degree

Burdukov

Butakov

Кузнецов

2017

J. Phys.: Conf. Ser.

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Abstract. In this paper, we investigate the effect of mechanically activating grinding of coals of various degrees of metamorphism by two different methods -determination of the flash time in a vertical tubular furnace and thermogravimetric analysis. In the experiments, the coals that had been processed on a vibrating centrifugal mill and a disintegrator, aged for some time, were compared. The experiments showed a decrease in the ignition temperature of mechanically activated coals -deactivation of fuel, as well as the effect of mechanical activation on the further process of thermal-oxidative degradation. IntroductionCoal is one of the most important energy sources in the world. According to forecasts, by 2020, the share of coal in the global energy sector will reach 50%, primarily due to the very likely reduction in oil and gas consumption, as well as the revision of the policy on the development of nuclear energy [1].At present, most coal-fired power plants operate using petroleum products to start and color the boiler during operation. The cost of these petroleum products significantly exceeds the cost of the coal itself, and therefore the introduction of new technologies that allow to exclude petroleum products from the energy processes that take place at the CHPP (Central Heating and Power Plant) is topical [2,3]. One of such technologies is the technology of mechanical activation of microgrinding coal obtained at mills-disintegrators. In this paper, coal studies are conducted using two different methods: determination of the self-ignition temperature of coals in a vertical tubular furnace and thermogravimetric analysis because the first method allows you to observe the processes of ignition of coal, and the results of the second one can conclude about the further process of thermal decomposition of coal.

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Section: Thermogravimetric Analysissupporting

confidence: 53%

Research of the chemical activity of microgrinding coals of various metamorphism degree

Burdukov

Butakov

Кузнецов

2017

J. Phys.: Conf. Ser.

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“…Thermogravimetric analysis (TGA) is another technique commonly used to determine the temperature and mechanism of coal ignition [13][14][15][16]. The evolution of the gaseous products during coal ignition and burnout has also been employed to determine the ignition temperature of pulverised coal [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Ignition characteristics of coal blends in an entrained flow furnace

Faúndez

Arias

Rubiera

et al. 2007

Fuel

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“…The temperature at which the combustion TG curve deviates from the pyrolysis TG curve was taken as the ignition temperature. This technique for the measurement of ignition temperature has been used by many researchers [3]. Burnout temperature is the temperature at which the final conversion is reached.…”

Section: -150mentioning

confidence: 99%

Oxy-combustion of biomass in a circulating fluidized bed

Kosowska-Golachowska¹,

Kijo-Kleczkowska²,

Luckos³

et al. 2016

Archives of Thermodynamics

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The objective of this study was to investigate combustion characteristics of biomass (willow, Salix viminalis) burnt in air and O2/CO2 mixtures in a circulating fluidized bed (CFB). Air and oxy-combustion characteristics of wooden biomass in CFB were supplemented by the thermogravimetric and differential thermal analyses (TGA/DTA). The results of conducted CFB and TGA tests show that the composition of the oxidizing atmosphere strongly influences the combustion process of biomass fuels. Replacing N2 in the combustion environment by CO2 caused slight delay (higher ignition temperature and lower maximum mass loss rate) in the combustion of wooden biomass. The combustion process in O2/CO2 mixtures at 30% and 40% O2 is faster and shorter than that at lower O2 concentrations.

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Studying the mechanisms of ignition of coal particles by TG-DTA

Cited by 140 publications

References 7 publications

Research of the chemical activity of microgrinding coals of various metamorphism degree

Research of the chemical activity of microgrinding coals of various metamorphism degree

Ignition characteristics of coal blends in an entrained flow furnace

Oxy-combustion of biomass in a circulating fluidized bed

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