Ash Deposition and Fouling Tendency of Two Energy Crops (Cynara and Poplar) and a Forest Residue (Pine Chips) Co-fired with Coal in a Pulverized Fuel Pilot Plant

Bartolomé, Carmen; Gil, Ana Jesús Mateos

doi:10.1021/ef401420j

Cited by 29 publications

(12 citation statements)

References 31 publications

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“…The ash content, which is negatively related to the energy value and associated with the risk of boiler corrosion [308], varies broadly (1-4%), depending on genotype and site conditions [117,137,231,303]. The fouling and slagging risk derived from ash compositions are known to be very low [308][309][310]. The presence of nitrogen (N), which is related to NOx emissions, is low (0.5%) in poplar biomass [148,231,311], along with chlorine (Cl, <0.02%) and sulfur (S, <0.04%), which are corrosive [145,312,313].…”

Section: Biomass Characterizationmentioning

confidence: 99%

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Oliveira

Pérez-Cruzado

Cañellas

et al. 2020

Forests

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Developing a circular bioeconomy based on the sustainable use of biological resources, such as biomass, seems to be the best way of responding to the challenges associated with global change. Among the many sources, short rotation forest crops are an essential instrument for obtaining quality biomass with a predictable periodicity and yield, according to the areas of cultivation. This review aims to provide an overview of available knowledge on short rotation coppice Populus spp. plantations under Mediterranean conditions and specifically in Spain, in order to identify not only the status, but also the future prospects, for this type of biomass production. The analysis of available information was conducted by taking into consideration the following aspects: Genetic plant material; plantation design, including densities, rotation lengths and the number of rotations, and mixtures; management activities, including irrigation, fertilization, and weed control; yield prediction; biomass characterization; and finally, an evaluation of the sustainability of the plantation and ecosystem services provided. Despite advances, there is still much to be done if these plantations are to become a commercial reality in some Mediterranean areas. To achieve this aim, different aspects need to be reconsidered, such as irrigation, bearing in mind that water restrictions represent a real threat; the specific adaptation of genetic material to these conditions, in order to obtain a greater efficiency in resource use, as well as a greater resistance to pests and diseases or tolerance to abiotic stresses such as drought and salinity; rationalizing fertilization; quantifying and valuing the ecosystem services; the advance of more reliable predictive models based on ecophysiology; the specific characterization of biomass for its final use (bioenergy/bioproducts); technological improvements in management and harvesting; and finally, improving the critical aspects detected in environmental, energy, and economic analyses to achieve profitable and sustainable plantations under Mediterranean conditions.

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Section: Biomass Characterizationmentioning

confidence: 99%

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Oliveira

Pérez-Cruzado

Cañellas

et al. 2020

Forests

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“…Otherwise, there are other ratios specifically for slagging, such as slagging index (RS), (Equation (4) of Table 3) [13,26,33] and, slag ratio (SR), indicative of the slag viscosity (Equation (5) of Table 3) [21,25,26]. For fouling, ratios such as fouling index (FU) (Equation ( 6) of Table 3) [13,26,33,34] are employed.…”

Section: Theoretical Deposition Indicesmentioning

confidence: 99%

Influence of Combustion Parameters on Fouling Composition after Wood Pellet Burning in a Lab-Scale Low-Power Boiler

et al. 2015

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The present study aims to evaluate the effect of different operating conditions on fouling composition after woody biomass combustion in an experimental low-power fixed-bed boiler. The boiler was built specifically for research purposes and allows easy removal of areas susceptible to fouling and the control, modification and registry of combustion parameters. The influences of the total airflow supplied and the deposition probe temperature were studied in fouling; differentiating between the layers of fouling adhered to the tube and those deposited over the tube. Thermogravimetry and Differential Scanning Calorimetry (TG-DSC) and Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy (SEM-EDS) were performed in order to determine a relationship between the fouling composition and the combustion parameters used. Upon increasing the total airflow supplied and the deposition probe temperature, the amount of organic matter, namely unburned carbon, decreased, indicating a better combustion efficiency. Chemical analysis results of fouling deposits showed that inorganic elements presented different behaviors depending on the collection area and the combustion parameters. Non-volatile elements such as Si and Ca were mostly found in the coarse fraction of the bottom ash and minor amounts were deposited over the tube. Small amounts of Cl in biomass generated serious deposition problems, especially during combustions with low airflow rates.

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“…These minerals indicate potential ash-related problems at high or moderate thermal conversion temperatures [39,[44][45][46][47][48]. The release of Cl and K is a main concern due to their effect on corrosion when biomass is combusted or gasified [49,50].…”

Section: Heating Valuementioning

confidence: 99%

Characterization of residual biomasses from the coffee production chain and assessment the potential for energy purposes

Martinez

Rocha

Carneiro

et al. 2019

Biomass and Bioenergy

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Chemical quantitative characterization of biomass is relevant for waste to energy recovery technologies. In the present work, selected agroindustry solid residues from coffee cropsparchment and coffee shrub, i.e., stem, branches and leaveswere characterized. Properties such proximate, ultimate and biochemical composition, energy content, and thermogravimetric analysis, were evaluated. Results showed high values of higher heating value and volatile matter content. The silica contents are small for all samples. Additionally, the high content of extractives and lignin, reveal that these residual biomasses are more suitable for charcoal than cellulose pulp production. The extensive residue characterization provided valuable data that helped in outcome of the evaluation of different conversion technologies as being an environmentally friendly alternative, contributing to sustainable, reliable, carbon-neutral form of modern energy and upgrade the *Manuscript Click here to view linked References 2 large quantity of waste generated by the coffee industry into energetically valued residues, by improving their management.

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Ash Deposition and Fouling Tendency of Two Energy Crops (Cynara and Poplar) and a Forest Residue (Pine Chips) Co-fired with Coal in a Pulverized Fuel Pilot Plant

Cited by 29 publications

References 31 publications

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Poplar Short Rotation Coppice Plantations under Mediterranean Conditions: The Case of Spain

Influence of Combustion Parameters on Fouling Composition after Wood Pellet Burning in a Lab-Scale Low-Power Boiler

Characterization of residual biomasses from the coffee production chain and assessment the potential for energy purposes

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