Pressurized Oxy-fuel Combustion: A Study of Selected Parameters

Lasek, Janusz; Głód, Krzysztof; Janusz, M.; Kazalski, Krzysztof; Zuwała, J.

doi:10.1021/ef201677f

Cited by 65 publications

(34 citation statements)

References 23 publications

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“…1. A detailed description of the experimental facility is presented elsewhere (Lajnert and Latkowska, 2013;Lasek, et al, 2012;Lasek et al, 2013).…”

Section: Characteristics Of Selected Experimental Facilities Used In mentioning

confidence: 99%

“…Usually, researches focused on the transition rate. However, Flexiburn TM was also applied as a scientific tool to investigate NO conversion during oxy-fuel combustion (Lasek, et al, 2012;Lasek et al, 2013). Very recently Luo et al (2014) simulated the transition process (between air-into oxy-combustion) in a 3 MWth oxy-fuel test facility using Aspen Plus Dynamics software.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Transition Time From Air to Oxy-Combustion

Lasek¹,

Lajnert²,

Głód³

et al. 2015

Chemical and Process Engineering

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In this paper some issues of the transition process from air-to oxy-combustion were investigated. Advantages of flexible combustion were described. Flexible combustion tests carried out at four European plants and five plants outside Europe of different scales of process and test parameters were presented. An analysis of the transition time from air to oxy-combustion of different laboratory and pilot scale processes was carried out. The "first-order + dead time" approach was used as a model to describe transition process. Transitional periods between combustion modes and characteristic parameters of the process were determined. The transition time depends not only on the facility's capacity but also it is impacted by specific operational parameters.

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“…1. A detailed description of the experimental facility is presented elsewhere (Lajnert and Latkowska, 2013;Lasek, et al, 2012;Lasek et al, 2013).…”

Section: Characteristics Of Selected Experimental Facilities Used In mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Transition Time From Air to Oxy-Combustion

Lasek¹,

Lajnert²,

Głód³

et al. 2015

Chemical and Process Engineering

Self Cite

View full text Add to dashboard Cite

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“…The process product is a gas consisting mostly of CO 2 and water vapour. The considerable concentration of CO 2 in the gas enables direct referral to sequestration, which is followed by condensation of water vapour [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Since the oxy-combustion of coal char is a heterogeneous reaction, it can proceed under three different reaction-controlling regimes: chemical kinetics, mixed internal diffusion-chemical kinetics and external diffusion [8,9]. Oxy-combustion in a fluidised bed boiler occurs at a temperature of 1073-1173 K where diffusion limitations exist [3,4,10]. The scaling-up of this process requires an extensive computational analysis, which is critical for proper boiler design.…”

Section: Introductionmentioning

confidence: 99%

Limitation of thermogravimetry for oxy-combustion analysis of coal chars

Babiński

Ściążko

Ksepko

2017

J Therm Anal Calorim

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A kinetic study of the oxy-combustion of chars obtained from two Polish steam coals was conducted. A comparative study was focused on the data analysis concerning oxy-combustion of coal chars collected from two thermobalances, which differed in construction, design of crucibles, sample size and gas flow direction. The influence of individual factors such as temperature, O 2 concentration, the dimensions of the crucibles and the dimensions of the char bed on the reaction rate was analysed. On the basis of these results, a global kinetic model was elaborated showing the influence of all factors, particularly mass transfer conditions, on reaction rates. The developed model can be extended to other mass transfer conditions or fluidised bed conditions and can be applied to other fast reactions to ensure they occur in the chemical reaction kinetics control regime during TG tests. It was concluded that the gas-solid fuel contact characteristics are crucial for the measured reaction rate and for the interpretation of kinetic data.

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“…The TAURON group, second largest energy producer in Poland, joined R&D Strategic Programme "Development of a technology for highly efficient zero-emission coal-fired power units integrated with CO 2 capture" [2] developing post-combustion CO 2 capture [3] and oxyfuel combustion technology [4,5], as well as biomass co-firing [6] to find economically and technically acceptable way to reduce CO 2 emissions.…”

Section: Introductionmentioning

confidence: 99%