Proposition of Improving Selected Logistics Processes of Pellet Production

Zimon, Dominik; Woźniak, Joanna; Domingues, Pedro; Kus, Hubert

doi:10.24874/ijqr15.02-02

Cited by 13 publications

(9 citation statements)

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“…The selected pellet factory with an installed production of 70,000 t•year −1 together with the sawmill residues uses nearly 65,000 m 3 •year −1 of energy roundwood as raw material. Energy roundwood mix consists of 63% silver fir and Norway spruce and 37% European beech, which is in the line with common raw material mix (approximately 70% coniferous wood and remaining part deciduous wood) previously reported [54]. Product range is ENplus A1 pellet and ENplus A2 pellet.…”

Section: Data Collectionsupporting

confidence: 74%

Variability of Normative Properties of Wood Chips and Implications to Quality Control

et al. 2021

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The research was conducted with the goal to determine the variability of the quality parameters of the wood chips produced from the most favorable raw material (energy roundwood), and in the most controllable operational conditions (pellet factory), as the first step in identifying opportunities to optimize the wood chips’ quality monitoring. Four raw material types were tested: fir/spruce and beech debarked energy roundwood, as well as energy wood with bark of the same species. Sampling was conducted during six consecutive months along with laboratory testing, all according to the HRN EN ISO standards for solid biofuels. Interpretation of the results was done in relation to deviation from the first sampling results (as an indicator of the possibility to retain the quality of wood chips), and repeatability and reproducibility set in the standards (as an indicator of acceptable variability). The influence of the species and debarking process on the wood chips’ quality was analyzed as well. Relative deviation from the first sampling as well as the quality class change pointed moisture content as a normative property with the lowest possibility to retain initial values over the six-month period. Ash content results indicated a strong possibility to maintain the initial ash content class in the majority of the samples. In just three cases, the results of ash content were outside the reproducibility limits with first sampling as a reference. Gross calorific value results pointed only four samples outside the reproducibility limits with the first sampling results are set as a reference. Wood species influenced gross calorific value and the median value of the particle size distribution and debarking showed a significant positive effect on the moisture content reduction as well as on the ash content reduction. Presented findings are indicative for the investigated raw materials, however for the general conclusion on the subject of wood chips normative properties variation, various raw material types will have to be examined in further research.

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Section: Data Collectionsupporting

confidence: 74%

Variability of Normative Properties of Wood Chips and Implications to Quality Control

et al. 2021

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“…At the same time, to foster the growth of the biomass industry, various challenges like constraining raw materials, improving the efficiency of production, and increasing fuel quality must be addressed. Equally important are socio-economic implications and expanding public awareness about biomass utilization in a safe and environmentally responsible way (Abbasi and Abbasi 2010 ; Gołuchowska et al 2015 ; Piwowar and Dzikuć 2016 ; Zyadin et al 2018 ; Olsztyńska 2019 ; Klepacka and Florkowski 2019 , 2020 ; Modelska et al 2020 ; Senila et al 2020 ; Bełdycka-Bórawska et al 2021 ; Ślusarz et al 2021 ; Zimon et al 2021 ; Wieruszewski et al 2022a , b ; Stolarski et al 2022 ; Janiszewska and Ossowska 2023 ; Mawusi et al 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Quality assessment of biomass pellets available on the market; example from Poland

Drobniak,

Jelonek,

Mastalerz

et al. 2024

Environ Sci Pollut Res

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This study evaluates the quality of 30 biomass pellets sold for residential use in Poland. It provides data on their physical, chemical, and petrographic properties and compares them to existing standards and the information provided by the fuel producers. The results reveal considerable variations in the quality of the pellets and show that some of the purchased samples are not within the DINplus and/or ENplus certification thresholds. Among all 30 purchased samples, only one passes the quality thresholds set by the PL-US BIO, a newly established quality certification in Poland that combines quality assessment following DINplus with optical microscopy analysis. The primary issues causing a decrease in pellet quality include elevated ash and fines content, compromised mechanical durability, too low ash melting temperature, and additions of undesired additions like bark, inorganic matter, and petroleum products. Our research highlights the need for improved fuel quality control measures, and transparent and accurate product labeling, as well as the need for a comprehensive and publicly available national database of solid biomass fuel producers and fuels sold. These are essential steps toward increasing customers’ awareness and trust, encouraging them to embrace biomass fuels as reliable and sustainable sources of energy.

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“…The part of tree stems that is unsuitable for industrial processing can be used as biofuel. This wood does not need any specific preparation, an advantage in the acceptability of wood waste as biofuel, with the main focus on logging residues [4]. The waste can be the above-ground part of the stump, tree tops, chopped sawn wood, or off-cuts from cutting tree stems [5,6].…”

Section: Introductionmentioning

confidence: 99%

Co-pelletization of Hemp Residues and Agricultural Biomass: Effect on Pellet Quality and Stability

2023

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The rising interest in lowering the use of fossil fuels, which influence environmental pollution and global warming, is driving a substantial increase in renewable sources. Agricultural residues are the likely potential source for bioenergy generation. Some of them are already utilized for energy. Nonetheless, their potential is underutilized due to low biomass quality and high concentrations of sulfur and chloride, which induce the corrosion of adjoining equipment. However, their ash content and ash melting point make their utilization as renewable resources essential. Therefore, there is a need to find technologies to enhance biomass utilization for bioenergy processes. With the increase in hemp cultivation to extract phytocannabinoids, the amount of unused biomass has increased. The aim of this research was to investigate the use of hemp biomass for pellets and improve pellet quality by mixing them with lignin and oak sawdust. The results showed that the lowest amount of ash was found in pellets with 80% oak sawdust and 20% hemp residue compared with pellets made from mixtures of hemp residues, lignin, and oak sawdust. The highest calorific value was achieved by mixing hemp residues (20%) with lignin (80%).

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Proposition of Improving Selected Logistics Processes of Pellet Production

Cited by 13 publications

References 0 publications

Variability of Normative Properties of Wood Chips and Implications to Quality Control

Variability of Normative Properties of Wood Chips and Implications to Quality Control

Quality assessment of biomass pellets available on the market; example from Poland

Co-pelletization of Hemp Residues and Agricultural Biomass: Effect on Pellet Quality and Stability

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