Primary fragmentation behavior of refuse derived fuel pellets during rapid pyrolysis

Zaini, Ilman Nuran; Wen, Yuming; Mousa, Elsayed; Jönsson, Pär G.; Yang, Weihong

doi:10.1016/j.fuproc.2021.106796

Cited by 14 publications

(8 citation statements)

References 43 publications

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“…The briquettes were compressed in the longitude position so as to test for the CCS, while each briquette was compressed in the radial direction during STS measurement. The tests were performed in accordance with ISO 4700:2007 standard [ 16 ]. In order to obtain credible strength values, three briquettes were tested for each CCS and STS measurement, which were then averaged.…”

Section: Methodsmentioning

confidence: 99%

Maximizing the Recycling of Iron Ore Pellets Fines Using Innovative Organic Binders

et al. 2023

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This research work focuses on the practicality of using organic binders for the briquetting of pellet fines. The developed briquettes were evaluated in terms of mechanical strength and reduction behavior with hydrogen. A hydraulic compression testing machine and thermogravimetric analysis were incorporated into this work to investigate the mechanical strength and reduction behavior of the produced briquettes. Six organic binders, namely Kempel, lignin, starch, lignosulfonate, Alcotac CB6, and Alcotac FE14, in addition to sodium silicate, were tested for the briquetting of pellet fines. The highest mechanical strength was achieved using sodium silicate, Kempel, CB6, and lignosulfonate. The best combination of binder to attain the required mechanical strength even after 100% reduction was found to be a combination of 1.5 wt.% of organic binder (either CB6 or Kempel) with 0.5 wt.% of inorganic binder (sodium silicate). Upscaling using an extruder gave propitious results in the reduction behavior, as the produced briquettes were highly porous and attained pre-requisite mechanical strength.

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Section: Methodsmentioning

confidence: 99%

Maximizing the Recycling of Iron Ore Pellets Fines Using Innovative Organic Binders

et al. 2023

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“…Van de Velden et al (2010) reported that forming various incondensable gaseous products, such as methane, carbon dioxide, and syngas (a mixture of hydrogen and carbon monoxide), involves breaking covalent bonds through a process called fragmentation. This fragmentation occurs at pyrolysis temperatures of 700-800 °C or higher (Lu et al 2011;Zaini et al 2021) and can break bonds within polymers or monomers. The distribution of products resulting from fragmentation is influenced mainly by factors such as biomass particle size, heating rate, residence time, reactor temperature, and pressure (Zhang et al 2022).…”

Section: Pyrolytic Gasmentioning

confidence: 99%

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

et al. 2023

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Climate change issues are calling for advanced methods to produce materials and fuels in a carbon–neutral and circular way. For instance, biomass pyrolysis has been intensely investigated during the last years. Here we review the pyrolysis of algal and lignocellulosic biomass with focus on pyrolysis products and mechanisms, oil upgrading, combining pyrolysis and anaerobic digestion, economy, and life cycle assessment. Products include oil, gas, and biochar. Upgrading techniques comprise hot vapor filtration, solvent addition, emulsification, esterification and transesterification, hydrotreatment, steam reforming, and the use of supercritical fluids. We examined the economic viability in terms of profitability, internal rate of return, return on investment, carbon removal service, product pricing, and net present value. We also reviewed 20 recent studies of life cycle assessment. We found that the pyrolysis method highly influenced product yield, ranging from 9.07 to 40.59% for oil, from 10.1 to 41.25% for biochar, and from 11.93 to 28.16% for syngas. Feedstock type, pyrolytic temperature, heating rate, and reaction retention time were the main factors controlling the distribution of pyrolysis products. Pyrolysis mechanisms include bond breaking, cracking, polymerization and re-polymerization, and fragmentation. Biochar from residual forestry could sequester 2.74 tons of carbon dioxide equivalent per ton biochar when applied to the soil and has thus the potential to remove 0.2–2.75 gigatons of atmospheric carbon dioxide annually. The generation of biochar and bio-oil from the pyrolysis process is estimated to be economically feasible.

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“…The co-decomposition of biomass with plastics occurs through the formation of polymer melt films on the reacting surface, which prevents the access of the oxidiser [58,59]. Plastic also can act as a binder, sticking waste or biomass particles together [16,60]. Pyrolysis of polymers in the presence of porous sorbents results in clogging and coking of pores [61].…”

Section: Organic Matter Melting and Decompositionmentioning

confidence: 99%

“…Reactors and experimental units for pyrolysis, gasification, and incineration of waste (including plastic-containing waste), are described in several reviews: [3][4][5][6][7][8]. The main way Energies 2023, 16, 4589 2 of 25 to prevent sintering and agglomeration during waste processing is by using mechanical devices, for example, special agitators, rotators, screws, mechanical grates, etc. [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the agglomeration of coal particles can lead, for example, to the formation of large aggregates and mechanical underburning in the pulverised coal flame [13,14]. Agglomeration is also used in the briquetting and pelletisation of fuels [15][16][17]. In the thermal processing of biomass and waste, agglomeration is usually an undesirable process.…”

Section: Introductionmentioning

confidence: 99%

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Particle Agglomeration of Biomass and Plastic Waste during Their Thermochemical Fixed-Bed Conversion

Donskoy

2023

Energies

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The article provides state-of-the-art research on agglomeration processes during fixed-bed combustion and gasification of low-grade fuels such as biomass and waste (primarily plastic-containing waste). Such fuels demonstrate complex thermal behaviour: their decomposition and combustion are multistage, accompanied by phase transitions, and may lead to fixed-bed mechanical instability and the non-uniformity of air distribution over the cross-section. To clarify the role of physicochemical factors (fuel composition and properties, reactor conditions), data from different sources are compared. The review shows that the fixed-bed agglomeration regimes can, in a rough approximation, be classified by the sintering mechanism (due to the melting of the mineral part or the organic part), with the following search for each mechanism realisation conditions by comparing the fuel properties and characteristic temperatures. Attempts to theoretically describe and numerically simulate the agglomeration phenomenon as a change in the structure of a reacting dispersed medium are also considered: the main directions in which such approaches can be developed are indicated.

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Primary fragmentation behavior of refuse derived fuel pellets during rapid pyrolysis

Cited by 14 publications

References 43 publications

Maximizing the Recycling of Iron Ore Pellets Fines Using Innovative Organic Binders

Maximizing the Recycling of Iron Ore Pellets Fines Using Innovative Organic Binders

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

Particle Agglomeration of Biomass and Plastic Waste during Their Thermochemical Fixed-Bed Conversion

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