Evaluation of limestones for the purposes of desulphurisation during the fluid combustion of brown coal

Hlinčík, Tomáš; Buryan, Petr

doi:10.1016/j.fuel.2012.09.074

Cited by 24 publications

(19 citation statements)

References 11 publications

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“…Cocombustion of biofuels (including alternative ones also containing communal waste) in these appliances brings along several issues connected with coating of the surfaces of limestones and dolomites used for flue gas desulphurisation [2][3][4][5][6][7][8]. e most significant effect of the coating is the increase of desulphurisation costs and the quantity of energy by-products containing a nonnegligible amount of unreacted (free) CaO [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Formation of Incrustations during the Cocombustion of Biomass in Fluidised Bed Boilers

Buryan

2019

Journal of Chemistry

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In this article, we focus on causes of formation of incrustations in fluidised bed boilers that result from combustion of biomasscontaining energy-producing raw materials and can significantly limit the efficiency of the respective power equipment operation. We applied laboratory procedures followed for assessment of characteristic eutectics of mixtures of coal ashes, desulphurisation components (dolomite and limestone), and woodchip ashes. Our analysis proved that combustion of these (or similar) raw materials, accompanied by repeated heating and cooling of combustion and flue gas desulphurisation products, leads to the formation of unfavourable incrustations. ese incrustations can grow up to several tens of centimetres in size, thereby significantly restricting the power equipment functionality. ey arise due to incrust reheating that results in the formation of eutectics, which have lower melting temperatures than that during their first pass through the combustion process. e same holds for desulphuriation components themselves. Formation of these new eutectics can be attributed both to recycling of substances produced during the first pass through the furnace as well as to mixtures formed both from recycled materials and from components initially combusted in the boiler furnace.

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Section: Introductionmentioning

confidence: 99%

Formation of Incrustations during the Cocombustion of Biomass in Fluidised Bed Boilers

Buryan

2019

Journal of Chemistry

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“…An industrial sector with a major environmental impact is the energy sector, which is a major source of pollution by combustion of fossil fuels [1][2][3]. Desulfurization of combustion gases is currently the subject of numerous experimental research and research projects that have proposed and developed numerous desulfurization processes: dry, semi-dry and wet [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of sulfur dioxide absorption into carbonate suspensions with sulfites addition

Drăgan¹

2017

Studia UBB Chemia

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ABSTRACT. This paper presents the experimental results obtained by sulfur dioxide chemisorption into carbonate suspension with sulfites addition at different temperatures and concentration of the absorbent suspension. Presence of sulfites in the absorbent suspension has a positive influence on the global rate of the absorption process. The acceleration of SO2 chemisorption process in the absorbent suspension containing MeSO3 -MeCO3 is determined by the higher concentration of ions in the liquid phase resulted from higher solubility of MeSO3 comparative with MeCO3. The addition of MeSO3 at a concentration of 10% in the composition of the absorbent suspension determines a significant decrease of the time required for obtaining a high conversion.

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“…Sulphur dioxide is considered an indicator of atmospheric pollution, as it is a major contributor to contamination and environmental degradation, being anthropogenic sources through the combustion of fossil fuels that produce the 80% of this pollutant [1,2]. Fossil fuels will still play a key role in the energy mix for the years to come, despite the different prospective frameworks that might be under consideration, and investment in clean fossil fuels technologies is mandatory for taking benefit from this relatively abundant source of energy [3].…”

Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative characterization of a coal power plant waste by TG/DSC/MS, XRF and XRD

Fernández

González

Pesquera

et al. 2016

J Therm Anal Calorim

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SO2 removal from coal-fired power plant flue gases can be done by dry, semi-dry or wet desulfurization processes, using limestone or lime containing products as sorbents. In a Brazilian coal power plant there is a dry desulfurization unit to capture SO2 with hydrated lime from the combustion gases. A part of the flying ashes produced is mixed with the bottom coal ashes and the spent sulphated product generated after SO2 capture. This residual solid blend is then buried in a non-productive area, from which coal was already extracted and is studied in this work. According to the authors experience in development and characterization of adsorbents for low temperature dry desulfurization processes and in Thermogravimetric Analysis, this paper shows and discusses a method which was developed to characterize qualitative and quantitatively the chemical and mineral composition of this waste by using Thermogravimetry coupled with mass spectrometry (TG/MS), X-ray fluorescence (XRF) and X-ray diffraction (XRD), to preview new potential industrial applications for this waste.

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Evaluation of limestones for the purposes of desulphurisation during the fluid combustion of brown coal

Cited by 24 publications

References 11 publications

Formation of Incrustations during the Cocombustion of Biomass in Fluidised Bed Boilers

Formation of Incrustations during the Cocombustion of Biomass in Fluidised Bed Boilers

Experimental study of sulfur dioxide absorption into carbonate suspensions with sulfites addition

Qualitative and quantitative characterization of a coal power plant waste by TG/DSC/MS, XRF and XRD

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