Combustion properties of some power station biomass fuels

Darvell, L.I.; Jones, James C. Peyton; Gudka, B.; Baxter, X. C.; Saddawi, A.; Williams, Alan; Malmgren, Alf

doi:10.1016/j.fuel.2010.03.003

Cited by 106 publications

(49 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a result of these problems, there is a loss of efficiency due to the reduction of the heat exchange, which results in an increase in the operational and maintenance costs. Therefore, fouling, slagging and corrosion are the main challenges faced by biomass combustion boilers, which are a subject of study for many researchers [4][5][6][8][9][10][11][12][13][14]. The main cause of the formation of these deposits resides in the chemical composition of the biomass used in the combustion.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Fouling and Bottom Ash from Woody Biomass Combustion in a Fixed-Bed Small-Scale Boiler and Evaluation of the Analytical Techniques Used

et al. 2015

View full text Add to dashboard Cite

Abstract:In this work, fouling and bottom ash were collected from a low-power boiler after wood pellet combustion and studied using several analytical techniques to characterize and compare samples from different areas and determine the suitability of the analysis techniques employed. TGA results indicated that the fouling contained a high amount of organic matter (70%). The XRF and SEM-EDS measurements revealed that Ca and K are the main inorganic elements and exhibit clear tendency in the content of Cl that is negligible in the bottom ash and increased as it penetrated into the innermost layers of the fouling. Calcite, magnesia and silica appeared as the major crystalline phases in all the samples. However, the bottom ash was primarily comprised of calcium silicates. The KCl behaved identically to the Cl, preferably appeared in the adhered fouling samples. This salt, which has a low melting point, condenses upon contact with the low temperature tube and played a crucial role in the early stages of fouling formation. XRD was the most useful technique applied, which provided a semi-quantitative determination of the crystalline phases. FTIR was proven to be inadequate for this type of sample. The XRF and SEM-EDS, techniques yield similar results despite being entirely different.

show abstract

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Fouling and Bottom Ash from Woody Biomass Combustion in a Fixed-Bed Small-Scale Boiler and Evaluation of the Analytical Techniques Used

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Third, from the nitrogen content in solid biomass and in related matter, including agricultural waste, a diverse spectrum of volatile and heterogeneously fixed nitrogen-containing compounds can be expected, complicating the prediction of fuel-bound nitrogen conversion [6][7][8][9]. Finally, nitrogen conversion is being investigated regarding novel combustion strategies for power generation such as oxy-fuel combustion of coal and/or biomass [10][11][12], also requiring reevaluation of the pathways towards small nitrogen compounds.…”

Section: Introductionmentioning

confidence: 99%

Fuel-nitrogen conversion in the combustion of small amines using dimethylamine and ethylamine as biomass-related model fuels

Lucassen

Zhang

Warkentin

et al. 2012

Combustion and Flame

View full text Add to dashboard Cite

Laminar premixed flames of the two smallest isomeric amines, dimethylamine and ethylamine, were investigated under one-dimensional low-pressure (40 mbar) conditions with the aim to elucidate pathways that may contribute to fuel-nitrogen conversion in the combustion of biomass. For this, identical flames of both fuels diluted with 25% Ar were 2 studied for three different stoichiometries (Φ=0.8, 1.0, and 1.3) using in situ molecular-beam mass spectrometry (MBMS). Quantitative mole fractions of reactants, products and numerous stable and reactive intermediates were determined by electron ionization (EI) MBMS with high mass resolution to separate overlapping features from species with different heavy elements by exact mass. Species assignment was assisted by using single-photon vacuum- We attempted to analyze the major pathways in the two flames with a detailed combustion model developed for this purpose. For this, thermochemical values for a number of intermediates had to be determined from quantum chemistry calculations. Also, specific sets of reactions were incorporated for the two fuels. While many trends seen in the experiments can be successfully reproduced by the simulations, additional efforts may be needed to reliably describe the fuel-nitrogen chemistry in the combustion of biomass-related model fuels with amine functions.

show abstract

“…Use of renewable energy sources has become a significant element of the energy industry; this is a condition imposed by the European Union. In the last few years, it has not just been Polish and foreign researchers that have become interested in the renewable energy sources problem, an area in which a lot of studies have been conducted [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Thermal characteristics of the combustion process of biomass and sewage sludge

Magdziarz

Wilk

2013

J Therm Anal Calorim

107

View full text Add to dashboard Cite

The combustion of two kinds of biomass and sewage sludge was studied. The biomass fuels were wood biomass (pellets) and agriculture biomass (oat). The sewage sludge came from waste water treatment plant. The biomass and sludge percentage in blends with coal were 10 %. The studied materials were characterised in terms of their proximate and ultimate analysis and calorific value. The composition of the ash of the studied fuels was also carried out. The behaviour of studied fuels was investigated by thermogravimetric analysis (TG, DTG and DTA). The samples were heated from an ambient temperature up to 1,000°C at a constant three rates: 10, 40 and 100°C min -1 in 40 mL min -1 air flow. TG, DTG and DTA analysis showed differences between coal, biomass fuels and sewage sludge. 10 % addition of studied fuels to the mixture with coal changed its combustion profile in the case of sewage sludge addition. The combustion characteristics of fuel mixtures showed, respectively, qualitative summarise behaviour based on single fuels. Evolved gaseous products from the decomposition of studied samples were identified. This study showed that thermogravimetric analysis connected with mass spectrometry is useful techniques to investigate the combustion and co-combustion of biomass fuels, and sewage sludge, together with coal. Nonisothermal kinetic analysis was used to evaluate the Arrhenius activation energy and the pre-exponential factor. The kinetic parameters were calculated using KissingerAkahira-Sunose model.

show abstract

Combustion properties of some power station biomass fuels

Cited by 106 publications

References 33 publications

A Comparative Study of Fouling and Bottom Ash from Woody Biomass Combustion in a Fixed-Bed Small-Scale Boiler and Evaluation of the Analytical Techniques Used

A Comparative Study of Fouling and Bottom Ash from Woody Biomass Combustion in a Fixed-Bed Small-Scale Boiler and Evaluation of the Analytical Techniques Used

Fuel-nitrogen conversion in the combustion of small amines using dimethylamine and ethylamine as biomass-related model fuels

Thermal characteristics of the combustion process of biomass and sewage sludge

Contact Info

Product

Resources

About