Thermochemical interaction of wood and polyethylene during co-oxidation in the conditions of thermogravimetric analysis

Donskoy, Igor; Козлов, А. Г.; Kozlova, M. A.; Пензик, М. В.; Shamanskiy, V A

doi:10.1007/s11144-020-01880-y

Cited by 6 publications

(1 citation statement)

References 72 publications

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“…During co-pyrolysis, the ranges of thermal decomposition can overlap in the area of decomposition of plastics and lignin [47]. Polyolefins may act as hydrogen donors [48][49][50], whereas the combustion of wood and char allows for intensifying the cracking of heavy pyrolysis products [51,52]. Interaction can occur through the gaseous phase: volatile products of polyolefins pyrolysis interact with the char carbon surface and change its structure and reactivity [53,54].…”

Section: Organic Matter Melting and Decompositionmentioning

confidence: 99%

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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Section: Organic Matter Melting and Decompositionmentioning

confidence: 99%

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

Donskoy

2023

Energies

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Agglomeration of coal and polyethylene mixtures during fixed-bed co-gasification

Donskoy,

Kozlov,

Penzik

et al. 2024

Int J Coal Sci Technol

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The article presents the results of experimental studies on the gasification of mixtures of brown coal and polyethylene (up to 20 wt% fraction) in a laboratory reactor. The work aims to study the agglomeration process during the heating and oxidation of the mixtures. The measurement results (gas composition, pressure drop) provide indirect information on the dynamics of thermal decomposition and structural changes in the fuel bed. We have shown that the interaction between polyethylene and a coal surface leads to the formation of dense agglomerates, in which the molten polymer acts as a binder. Clinkers form as a result of interfacial interactions between components and filtration flow rearranging. The hydrogen/carbon ratio in the solid residue of coal-polyethylene co-gasification increases from 0.07–0.2 to 1.11, indicating the formation of stable hydrocarbon compounds on the carbon surface. The conducted research makes it possible to identify possible interactions between chemical reactions and transfer processes that lead to agglomeration in mixtures of coal with polyethylene.

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Co-combustion of refuse plastic fuel from marine plastics with wood pellets in a fixed-bed: Identification of minimum cofiring ratio and ideal air flow rate

Park

Kim

et al. 2023

Fuel

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Thermochemical interaction of wood and polyethylene during co-oxidation in the conditions of thermogravimetric analysis

Cited by 6 publications

References 72 publications

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

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

Agglomeration of coal and polyethylene mixtures during fixed-bed co-gasification

Co-combustion of refuse plastic fuel from marine plastics with wood pellets in a fixed-bed: Identification of minimum cofiring ratio and ideal air flow rate

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