Ignition behaviour and flame stability of different ranks coals in oxy fuel atmosphere

Moroń, Wojciech; Rybak, W.

doi:10.1016/j.fuel.2015.08.065

Cited by 35 publications

(15 citation statements)

References 21 publications

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“…The diffusion process between the fuel and oxidizer can be observed from the shape, the height position and luminosity. The induction times of ignition of dust could measure in the air atmosphere were shorter than the ones measured in the Oxy atmosphere [3] for the stability of flames and the parameters of the fuel, the specific thermal capacity and density of the main gases making up a mixture with oxygen. Another is the stable combustion could be achieved with up to 90 Vol% of biocrude-oil.…”

Section: Introductionmentioning

confidence: 79%

Flame behavior, emission and mitigation

Sriwardani¹,

Basori²

2016

AIP Conference Proceedings

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Abstract. This study is based on the results of an experimental study. Data were analyzed qualitatively based on the literature and previous research. The purpose of this study was to determine the effects of altitude from ground level to the characteristics of the flame. Data obtained from the three candles in place on a three-tiered shelf. The fuel is solidly formed. Then a solid become a liquid fuel and turned into gas because of the heating. The flame may occur if a liquid element is already in gaseous form. The data analysis shows that in the lowest region of the flame can be lit high but not wide. Fuel is not quickly exhausted, so that the emissions caused by residual fuel are relatively smaller. On the second shelf, the flame is lower and wider, so that the fuel runs out the fastest. On the highest shelf, the flame is shortest and widest, but the candle can be lit longer than those placed on the second shelf. The conclusion of the study is the flame of a candle in the room most durable is the area closest to the base. This can reduce the level of emissions and an indication of the energy mitigation.

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Section: Introductionmentioning

confidence: 79%

Flame behavior, emission and mitigation

Sriwardani¹,

Basori²

2016

AIP Conference Proceedings

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“…The higher average system temperature improves the efficiency of the entire system but the average temperature is lowest for lignite combustion. In practical applications, it should be noted that the ignition of anthracite is difficult, and the calorific value of lignite is low 53 ; thus, bituminous coal, which is the main coal for power generation, 50 is suitable for the flame energy grading conversion system. Figure 9 shows the results of the second law analysis of the system components for bituminous coal combustion.…”

Section: Thermodynamic Analysis Results Of the Systemmentioning

confidence: 99%

A novel flame energy grading conversion system: Preliminary experiment and thermodynamic parametric analysis

et al. 2019

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Summary The focus of this study is to improve the efficiency of the thermal power cycle from the perspective of photo energy and thermal energy grading conversion. A new concept of combined radiation and heat engine model was proposed to establish a novel flame energy grading conversion system based on photovoltaic conversion and the Rankine cycle. From the perspective of energy utilization, the spectral radiative energy characteristics in oxy‐coal combustion were experimentally investigated, and a preliminary thermodynamic model of the new system was established based on the experimental results. Finally, energy and exergy analyses were conducted to determine the general characteristics of the proposed system and assess the improvements to the Rankine cycle. The results indicated that temperature was the main factor affecting the short‐waveband energy ratio. Compared with the Rankine cycle, the new flame energy grading conversion system improved the system efficiency by about 3.5%. The exergy analysis indicated that the proposed system reduced the exergy loss factor in the heat transfer of the boiler by about 3% to 6%. This study provides references for improving the thermal power cycle efficiency.

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“…Moreover, Japan's IHI [7] studied the flame propagation speed of coal combustion on a self-built microgravity measurement device and found that the flame propagation is the slowest in oxy-fuel atmosphere. Moron' et al [8] found that the temperature of laminar flame in oxy-coal combustion is about 1-15 K lower than that of air-coal combustion. These are mainly due to the high specific heat of CO 2 .…”

Section: Ignition and Flame Propagationmentioning

confidence: 98%

A review on fundmental research of oxy-coal combustion technology

et al. 2022

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Oxy-fuel combustion is a key technology to realize CO2 capture and storage in coal-fired power boilers in the future. In recent years, there have been extensive studies on it. This review summarizes some key results of fundamental research on oxy-coal combustion. By comparing with traditional coal-fired boiler with air combustion in power station, the typical characteristics of oxy-coal combustion are introduced from four aspects: combustion, heat transfer, pollutant emission and numerical simulation, so that readers have a relatively comprehensive understanding of fundamental research on oxy-fuel combustion. Furthermore, some scientific issues in future research are summarized. The paper is both academic and popular, providing basic knowledge and academic direction inspiration for scholars or graduate students who are about to engage in oxy-fuel combustion research.

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Ignition behaviour and flame stability of different ranks coals in oxy fuel atmosphere

Cited by 35 publications

References 21 publications

Flame behavior, emission and mitigation

Flame behavior, emission and mitigation

A novel flame energy grading conversion system: Preliminary experiment and thermodynamic parametric analysis

A review on fundmental research of oxy-coal combustion technology

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