Trace elements retention in bottom ashes during coal combustion with hydrated lime additions

Jerzak, Wojciech; Murzyn, P; Kuźnia, Monika; Magiera, Anna

doi:10.1080/15567036.2019.1636157

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…At the first peak of the DTG and TG curves, the temperature range of 350-550 • C corresponds to Ca(OH) 2 decomposition; however, the second peak from 550-950 • C is related to the decomposition of CaCO 3 . The dehydration (Equation (6)) and calcination (Equation (7)) reactions occur as follows [42]:…”

Section: Thermogravimetric Analysis Of Sorbent (Cao)mentioning

confidence: 99%

“…At the first peak of the DTG and TG curves, the temperature range of 350 -550 °C corresponds to Ca(OH)2 decomposition; however, the second peak from 550 -950 °C is related to the decomposition of CaCO3. The dehydration (Equation 6) and calcination (Equation 7) reactions occur as follows [42]: Ca(OH)2 → CaO + H2O (6) CaCO3 → CaO + CO2 (7) Figure 10. TG and DTG curves presenting the decomposition of CaO after CO2 capture during the pyrolysis process.…”

Section: Thermogravimetric Analysis Of Sorbent (Cao)mentioning

confidence: 99%

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Biomass Thermochemical Conversion via Pyrolysis with Integrated CO2 Capture

et al. 2020

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The presented work is focused on biomass thermochemical conversion with integrated CO2 capture. The main aim of this study was the in-depth investigation of the impact of pyrolysis temperature (500, 600 and 700 °C) and CaO sorbent addition on the chemical and physical properties of obtained char and syngas. Under the effect of the pyrolysis temperature, the properties of biomass chars were gradually changed, and this was confirmed by examination using thermal analysis, scanning electron microscopy, X-ray diffraction, and porosimetry methods. The chars were characterised by a noticeable carbon content (two times at 700 °C) resulting in a lower O/C ratio. The calculated combustion indexes indicated the better combustible properties of chars. In addition, structural morphology changes were observed. However, the increasing pyrolysis temperature resulted in changes of solid products; the differences of char properties were not significant in the range of 500 to 700 °C. Syngas was analysed using a gas chromatograph. The following main components were identified: CO, CO2, CH4, H2 and C2H4, C2H6, C3H6, C3H8. A significant impact of CaO on CO2 adsorption was found. The concentration of CO2 in syngas decreased with increased temperature, and the highest decrease occurred in the presence of CaO from above 60% to below 30% at 600 °C.

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Section: Thermogravimetric Analysis Of Sorbent (Cao)mentioning

confidence: 99%

Section: Thermogravimetric Analysis Of Sorbent (Cao)mentioning

confidence: 99%

Biomass Thermochemical Conversion via Pyrolysis with Integrated CO2 Capture

et al. 2020

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show abstract

“…Jerzak et al (Jerzak et al 2021) found that the efficiency of retention of trace elements in ashes is influenced by the diameter of coal particles (< 600 µm), and the size distributions of these particles are unimodal. the distribution and abundance of Ree in hard coal vary regionally, e.g.…”

Section: Introductionmentioning

confidence: 99%