The role of char and tar in determining the gas-phase partitioning of nitrogen during biomass gasification

Broer, Karl M.; Brown, Robert C.

doi:10.1016/j.apenergy.2015.08.100

Cited by 23 publications

(31 citation statements)

References 25 publications

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“…The increased heating rate and shortened residence time cause a decrease in the emissions of NH 3 and HCN and an increase in the concentrations of nitrogen-containing compounds in soot [56]. The significant portion of fuel-bound N is retained in the soot when combustion time is short, and temperature ranges between 650 • C and 850 • C [57].…”

Section: Product Of the Combustionmentioning

confidence: 99%

Chemical and Mineralogical Composition of Soot and Ash from the Combustion of Peat Briquettes in Household Boilers

et al. 2019

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Soot and ash as residues from the combustion of peat briquettes were analysed by chemical and mineralogical methods. The study aimed to characterize combustion in domestic boilers of two different emission classes. Ten samples of soot deposited in exhausting ways of boilers were obtained (five of each emission class). The analyses of organic substances in soot were performed using a combination of the methods for the determination of elemental and organic forms of carbon with analytical pyrolysis. Pyrolysis gas chromatography with mass spectrometric detection (Py-GC/MS) allowed the identification of organic compounds belonging to twenty different groups. The major and minor elements in peat briquettes, char and soot, were determined by X-ray fluorescence spectroscopy. The identification of grains and the chemical character of soot was performed using a scanning electron microscope with energy dispersive X-ray spectrometry. The mineral phases in ash were determined by X-ray diffraction. The behaviour of the inorganic elements in combustion products (ash and soot) was studied by means of an enrichment factor. The analytical results are used for characterizing the technological conditions of combustion. The soot deposits from the more advanced boilers with increased combustion temperature contain more organic compounds which indicate the highly carbonized cellulose (benzofurans and dibenzofurans). The increased combustion temperature is indicated by increased concentrations of heterocyclic and aliphatic nitrogen compounds, while the total concentrations of nitrogen in soot from boilers of both types are comparable.

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Section: Product Of the Combustionmentioning

confidence: 99%

Chemical and Mineralogical Composition of Soot and Ash from the Combustion of Peat Briquettes in Household Boilers

et al. 2019

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“…Much of the global carbon dioxide emissions originate from the burning of fossil fuels which accounted for 85% of the total world energy supply in 2010 [1]. The ever-increasing greenhouse gases emission significantly affect the biosphere, leading to global warming, mitigation demand that anthropogenic greenhouse gas emissions be steadily decreased [3].…”

Section: Introductionmentioning

confidence: 99%

“…The way to mitigate global climate change is by deploying energy technologies that utilise alternative energy sources which do not release or releases a little amount of carbon dioxide into the atmosphere [3].…”

Section: Introductionmentioning

confidence: 99%

“…Biomass energy conversion is considered to be carbon neutral process and for this reason, it is getting increased attention as the most potential renewable energy source [4]. Its attraction as a source of renewable energy is that the quantities of carbon dioxide emissions resulting from the use of biomass derived fuels are compensated for by the quantities of carbon dioxide that were recently absorbed by plants during growth [2][3]. Therefore, the net increase in global carbon dioxide levels is zero.…”

Section: Introductionmentioning

confidence: 99%

“…For biomass energy utilisation, gasification is the feasible alternative to the other energy conversion technologies since it can upgrade biomass feedstock with lower energy value to synthetic gas with a higher energy value, which can be utilised in gas turbines and gas engines to produce energy [5][6]. Gasification can accommodate feedstocks with a broad range of physical properties [3]. However, the major challenge associated with thermal gasification of biomass is tar and particulates formation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Furnace Temperature on the Distribution of Tar during Gasification of Miscanthus

Kombe

2018

JENRR

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Biomass has been extensively recognised as a clean and sustainable energy source with the highest probability to substitute fossil fuel in the energy market. Its utilisation for energy generation is of particular interest to the world at large because of its potential to reduce global carbon dioxide emission. Concerning these considerations, gasification technology comes to the forefront of biomass conversion to various forms of energy for some reasons. Primarily, gasification offers a high flexibility in utilising different kinds of biomass feedstock to produce a combustible gas, making it more active process than pyrolysis and direct combustion. However, the major challenge associated with thermal gasification of biomass is tars and particulates formation. These compounds compromise the state of syngas, potentially harming end use systems especially those delicate to the quality of gas. In this research, tar sampling and analysis was performed based on a modified standard tar protocol followed by gas chromatography-flame ionisation detector (GC-FID) so as to quantify tar concentration in syngas produced from gasification of Miscanthus. Experiments was carried out at various furnace temperature in the range 350-650 , with temperature enhancement, the abundance of phenolic compounds increases.

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Pyro-gasification of Invasive Plants to Syngas

Okoro

Harding

Daramola

2020

Valorization of Biomass to Value-Added Commodities

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The role of char and tar in determining the gas-phase partitioning of nitrogen during biomass gasification

Cited by 23 publications

References 25 publications

Chemical and Mineralogical Composition of Soot and Ash from the Combustion of Peat Briquettes in Household Boilers

Chemical and Mineralogical Composition of Soot and Ash from the Combustion of Peat Briquettes in Household Boilers

Effect of Furnace Temperature on the Distribution of Tar during Gasification of Miscanthus

Pyro-gasification of Invasive Plants to Syngas

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