Open AccessThermal decomposition of polyethylene agglomerates in a porous medium
Author(s) -
Igor Donskoy,
Denis Svishchev,
А. Г. Козлов,
М. В. Пензик
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012037
Subject(s) - agglomerate , economies of agglomeration , materials science , porosity , combustion , polyethylene , thermal decomposition , composite material , chemical engineering , porous medium , decomposition , chemistry , organic chemistry , engineering
Fixed-bed combustion of compositions with polymeric materials (for example, municipal solid waste) is often difficult due to the agglomeration phenomenon: when heated, the waste particles swell and emit a significant amount of viscous products, resulting in formation of clumps of particles that have low air permeability. Using experimental and theoretical models, some features of the formation and decomposition of agglomerates are investigated. Samples of the agglomerates were prepared in a laboratory batch unit by heating a mixture of polyethylene granules and clay particles. Using a mathematical model, numerical calculations of the heating regimes were performed under the conditions of an experimental unit. A change in the shape of the agglomerate at different points in time is considered.