The mechanism of the formation of soot and other pollutants during the co-firing of coal and pine wood in a fixed bed combustor

Fitzpatrick, Emma; Bartle, Keith D.; Kubacki, M.L.; Jones, James C. Peyton; Pourkashanian, Mohamed; Ross, A.B.; Williams, Alan; Kubica, K.

doi:10.1016/j.fuel.2009.02.037

Cited by 66 publications

(38 citation statements)

References 29 publications

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“…This result is difficult to observe using a filament pyrolyzer even at long residence times and slower ramp rates, although these species can be formed during the combustion of biomass when mixing is incomplete. 12 It is difficult to investigate thermal decomposition of volatile liquids using the filament pyrolyzer, and there is significant breakthrough during analysis. The microflow cell allows for the injection of liquid model compounds directly into the cell using a syringe.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Pyrolysis of Hydrocarbons and Biomass Model Compounds Using a Micropyrolysis Flow Cell

et al. 2011

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Hydrocarbon growth mechanisms based on a combination of small hydrocarbon fragments, such as C 2 /C 4 , have been postulated in high-temperature flames. However, there is considerable evidence of alternative pathways, especially in lower temperature regimes, in particular, the importance of resonance-stabilized radicals based on cyclopentadienyl (CPDyl) moieties. Further evidence of polycyclic aromatic hydrocarbon (PAH) growth mechanisms can be provided by analytical pyrolysis experiments using high-temperature flow cells. An analytical micropyrolysis flow cell method has been developed, enabling reactive pyrolysis of solid and liquid samples. This uses a SGE microflow cell pyrojector interfaced to a CDS 5200 series pyrolyzer in adsorbent mode for the product concentration, followed by gas chromatographyÀmass spectrometry (GCÀMS) or Fourier transform infrared (FTIR) analysis. The flow cell system enables residence time and stoichiometry to be varied. The benefits of the system over a filament pyrolyzer are demonstrated. A number of applications of this technique are presented to illustrate the potential of this system to investigate biofuel decomposition, PAH growth mechanisms, and soot formation from different hydrocarbon and oxygenated fuels. Evidence is obtained indicating that resonance-stabilized intermediates, especially CPDyl, are important in PAH growth mechanisms for a wide range of fuel types.

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Section: Resultsmentioning

confidence: 99%

Investigation of Pyrolysis of Hydrocarbons and Biomass Model Compounds Using a Micropyrolysis Flow Cell

et al. 2011

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“…Tables 2 and 3 show that the amount of phenols obtained from the coal pyrolysis was much higher than that in the coal extracts. Under the heating conditions, the weak C\C and C\O bonds of diverse types of linkages, such as ether linkages, connecting condensed aromatic and hydroaromatic units in the coal macromolecular structure were cleaved [26][27][28][29]. Thus, the emission of phenolic compounds during the coal pyrolysis is largely due to the thermal cracking of oxygen-containing structures rather than the escape of phenols already existing in the raw coals.…”

Section: Release Of Phenols During Coal Pyrolysismentioning

confidence: 99%

Study on the formation of phenols during coal flash pyrolysis using pyrolysis-GC/MS

Kong

Zhao

Bai

et al. 2014

Fuel Processing Technology

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“…The general mechanism of biomass combustion has been extensively studied over a number of years [3][4][5][6][7][8][9][10], but recently much attention has been directed to the emission of fine particles, that is below 2.5µm. In previous work, we considered that the cellulose and lignin components can be treated separately in relation to their emissions [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…In previous work, we considered that the cellulose and lignin components can be treated separately in relation to their emissions [4,5]. Cellulose decomposes largely to CO and H 2 together with other small molecules, while lignin decomposes to more complex aromatic products.…”

Section: Introductionmentioning

confidence: 99%

A study of smoke formation from wood combustion

Lea‐Langton

Baeza‐Romero

Boman

et al. 2015

Fuel Processing Technology

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Aerosol time of flight mass spectrometry (ATOFMS) was used to analyse the particles emitted during the flaming and smouldering phases of the combustion of samples of hard and soft woods. Eugenol and furfural were also burned and using results from previous work of the authors, they have been shown to be useful proxies for initial wood combustion products. The ratios of elementary carbon to total carbon in the particles were similar for both the woods and for eugenol. The ATOFMS spectra of most of the particles were consistent with the presence of soot precursor constituents along with oxygen containing fragments. Most particle diameters were less than 2.5 µm, with the greatest concentration<0.12µm

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The mechanism of the formation of soot and other pollutants during the co-firing of coal and pine wood in a fixed bed combustor

Cited by 66 publications

References 29 publications

Investigation of Pyrolysis of Hydrocarbons and Biomass Model Compounds Using a Micropyrolysis Flow Cell

Investigation of Pyrolysis of Hydrocarbons and Biomass Model Compounds Using a Micropyrolysis Flow Cell

Study on the formation of phenols during coal flash pyrolysis using pyrolysis-GC/MS

A study of smoke formation from wood combustion

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