Partitioning of K, Cl, S and P during combustion of poplar and brassica energy crops

Díaz-Ramírez, Maryori C.; Frandsen, Flemming; Glarborg, Peter; Sebastián, Fernando

doi:10.1016/j.fuel.2014.05.056

Cited by 49 publications

(42 citation statements)

References 27 publications

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“…As a result of the combined effect of moisture content after drying and H content in the genotypes studied, the LHV W was 5.5% higher in the best performing genotype (AF6) than in the poorest performing genotype (I-214). The values of HHV 0 and LHV w are lower than the typical values established for poplar in the [4] standard (Table 2) and they are below the results obtained in other studies with SRC poplar [18,[44][45][46].…”

Section: Conversion Pathway Optimal Biomass Properties Referencescontrasting

confidence: 73%

Effects of Shoot Size and Genotype on Energy Properties of Poplar Biomass in Short Rotation Crops

et al. 2019

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Eight poplar genotypes grown in a short rotation forest plantation established in an acid soil in South Europe were sampled at the age of 7 years to determine the energy properties regarding thermochemical conversion. The goal was to address the effect of selection of genotypes or shoot size at harvest on the energy quality of biomass. Between 34 and 50 biomass samples were obtained for each genotype: three disks were systematically sampled along the stem and were pooled together with a subsample of leafless branches representative of the biomass share of this component. Several energy properties were determined: higher calorific value, net calorific value, fresh moisture content, basic density, ash, volatile matter, fixed carbon content and elemental composition. Genotype had a significant effect on most of these properties, and the balsam genotypes displayed superior quality parameters and also higher biomass yield than the Euramerican genotypes. As a covariate, shoot basal diameter had a significant effect on the moisture content, basic density, ash content and on the concentrations of the elements N, K, Ca, Mg, S, Na and C. It was concluded that genotypes with low nutrient requirements planted at low density (<8000 cuttings ha−1) and harvested at a long enough rotation (7 years) produce good yields and high chip quality. Poplar short rotation crops can be grown to produce chips of A2 quality for non-industrial heating use (according to UNE-EN ISO 17225-4), able to be combusted in domestic thermal facilities of <1 MWth power.

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Section: Conversion Pathway Optimal Biomass Properties Referencescontrasting

confidence: 73%

Effects of Shoot Size and Genotype on Energy Properties of Poplar Biomass in Short Rotation Crops

et al. 2019

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“…In order to analyze these effects, tests can be made in commercial boilers adapted to carry them out controlled [5], [8], [21], [22], [28]- [30]. However, due to the complexity of the phenomena intervening in the fractioning of ashes, it is preferable to use laboratory reactors, most of them using fixed bed technology, in order to have better control of combustion conditions [13], [23], [31]- [34]. This type of reactors makes possible to gather important information about the behaviour of fuels under different operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the ash behaviour in combustion of pelletized residual agricultural biomass

Royo

Canalís

Quintana

et al. 2019

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Agricultural residual biomass presents a high potential for energy use around the world, often not utilized to a large extent due to its significant differences with respect to other biomass types, such as the one of forest origin. These differences are mainly related to the characteristics of its ashes (quantity and composition) which increase certain problematic phenomena during combustion, among them bottom ash sintering and fly ash deposition. The main goal of this paper is the experimental study of these issues for four different agropellets made of residual agricultural biomass (one woody and three blended with an herbaceous component) and a forest wood pellet (used as a reference), evaluated under different operating conditions in a laboratory fixed bed reactor. The influence of inlet air flow and temperature on the sintering degree and deposition ratio has been analyzed in a systematic way. For the five biofuels, under tested conditions, a clear relation inversely proportional between air excess ratio and deposition ratio has been determined. Deposition was more substantial for the four agropellets; meanwhile the sintering degree was more important for the three with an herbaceous component. The information obtained in this research work is intended to help researchers and technologists to make choices regarding the design and operation of conversion systems adapted for agricultural residual biomass, enhancing its market penetration.

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“…the ratio of charge, lambda, primary / secondary air distribution and residence time on the grate, leading to the best combustion efficiency in the system. The publication [26] quantifies the release of K, Cl, S and P for two species of energy plants and their impact on the ash flow phenomenon. However, the issue of agro biomass combustion in a small-scale fluid bed was discussed in a review article [27], where the most important problems concerning biomass combustion were presented, paying special attention to the presence of alkali metal compounds.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of agro and wood biomass combustion in the stream of inert material

2019

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Partitioning of K, Cl, S and P during combustion of poplar and brassica energy crops

Cited by 49 publications

References 27 publications

Effects of Shoot Size and Genotype on Energy Properties of Poplar Biomass in Short Rotation Crops

Effects of Shoot Size and Genotype on Energy Properties of Poplar Biomass in Short Rotation Crops

Experimental study on the ash behaviour in combustion of pelletized residual agricultural biomass

Characteristics of agro and wood biomass combustion in the stream of inert material

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