Numerical modeling of repowering of a thermal power plant boiler using plasma combustion systems

İbrahimoğlu, Beycan; Yılmazoğlu, M. Zeki; Cucen, Ahmet

doi:10.1016/j.energy.2016.02.130

Cited by 27 publications

(4 citation statements)

References 57 publications

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“…This method allows to locate significant frequency changes in the analysis of changes taking place in the flame. The use of the wavelet transform in the signal analysis has been presented in the papers [3][4]17].…”

Section: Introductionmentioning

confidence: 99%

Selected Aspects in the Analysis of the Combustion Process Using Wavelet Transform

Grądz

2020

IAPGOS

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The complexity of changes occurring in the flame during the combustion process has a direct influence on the quantity and quality of the combustion products. The presented measurement data pertaining to the changes in flame luminosity were recorded using a specialized monitoring system. These signals from the combustion of such fuels as pulverized coal and mazout were recorded with high sampling rate. The paper presented the analysis of changes in flame luminosity for different fuels using continuous and discrete wavelet transform. The main aim of the studies was to determine the scale values, which enable differentiating between the type of combusted fuel. The results of studies were presented in the form of scalograms.

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Section: Introductionmentioning

confidence: 99%

Selected Aspects in the Analysis of the Combustion Process Using Wavelet Transform

Grądz

2020

IAPGOS

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“…Slagging is one of the unavoidable problems, and it could do great harm to the boiler. 4 The slagging would reduce the heat transfer capacity of the heated surface of the furnace, increase heat loss, and reduce combustion efficiency in the furnace. 5,6 During biomass combustion, the alkali metal or alkaline earth metal was volatilized in the form of gas, then condensed on fly ash particles in the form of sulfates or chlorides, which reduced the melting point of fly ash and increased the surface viscosity of fly ash, and the slagging formed on the heated surface under the action of the furnace gas flow.…”

Section: Introductionmentioning

confidence: 99%

Tensile and flammability characterizations of corn straw slagging/high-density polyethylene composites

Zhang

Zhou

et al. 2019

Journal of Thermoplastic Composite Materials

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Biocomposites were prepared with corn straw slagging (CSS) and high-density polyethylene (HDPE) at four loading levels (10, 20, 30, and 40 wt%) by extrusion method. CSS/HDPE composites were tested by tension, oxygen index meter, differential scanning calorimetry, X-ray diffraction, and the scanning electron microscopy. The scanning electron microscopy showed that CSS was dispersed uniformly in the HDPE matrix and strong interfacial interaction was achieved, which had an important influence on the tensile strength of the composites. The tensile strength of the composites could be improved with proper increase of CSS and reached maximum value at 30 wt% content. Furthermore, the addition of CSS played an important role in improving the flame-retardant ability of CSS/HDPE composites, and the limited oxygen index was 31.26% at 40 wt% content, good flame-retardant effect achieved.

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“…In the work of Drosatos et al (2016), the behavior of a lignite boiler under both full and partial load conditions is investigated. In the work of Ibrahimoglu et al (2016), numerical analyses of repowering of a thermal power plant boiler using plasma combustion systems were conducted. The one-dimensional simulation of water/steam side, on the other hand, offers the information of circulating water/steam state (Park et al , 2010; Schuhbauer et al , 2014).…”

Section: Introductionmentioning

confidence: 99%

Modeling of combustion and hydrodynamics for a coal-fired supercritical boiler with double-reheat cycle

Tang

Wang

2019

HFF

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Purpose The design and retrofit of the heat exchangers in a boiler should take into account the processes occurring on the side of combustion and steam. For this reason, this study aims to couple a one-dimensional hydrodynamic model of steam with computational fluid dynamics (CFD) simulation of flue gas. Design/methodology/approach Radiant/semi-radiant platen heat exchangers are simplified as plane surfaces for CFD, while convective heat exchangers are introduced into the CFD simulation as energy/momentum absorption sources. Findings Numerical simulation is performed for a 1,000 MWe coal-fired ultra-supercritical boiler. The calculation results are validated by the thermodynamic design data. Tube outside surface temperature, as well as ash deposit temperature distributions, are obtained. Originality/value Complex tube arrangements can be completed with the aid of AutoCAD, and therefore, the simulation could offer detailed information of heat exchangers. In a word, a more reliable modeling of the whole steam generation process is achieved.

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Numerical modeling of repowering of a thermal power plant boiler using plasma combustion systems

Cited by 27 publications

References 57 publications

Selected Aspects in the Analysis of the Combustion Process Using Wavelet Transform

Selected Aspects in the Analysis of the Combustion Process Using Wavelet Transform

Tensile and flammability characterizations of corn straw slagging/high-density polyethylene composites

Modeling of combustion and hydrodynamics for a coal-fired supercritical boiler with double-reheat cycle

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