Numerical investigation of a novel smoldering-driven reactor for plastic waste pyrolysis

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

“…Similar effects were observed during the combustion of charcoal with polyurethane [113], however, the critical fraction of plastic, in this case, is higher (up to 40%), possibly due to the higher viscosity of the melt: quite a complete conversion of the mixture is possible even with an unstable combustion front. Filtration combustion with a non-uniform distribution of plastic (in the form of a "charge") was studied theoretically and experimentally in [114,115], where the efficiency of carbon combustion heat used to decompose plastic was evaluated: in this case, however, it is necessary to have a sufficient gap in the packing for providing filtration. The decomposition of polyethylene during the filtration combustion of gaseous fuel was studied in [116], and in [117] with wood additives.…”

Applied smouldering for co-waste management: Benefits and trade-offs

“…Smouldering combustion is emerging as a valuable application for many environmentally beneficial purposes such as: (i) land remediation [1], (ii) hazardous liquid management [2,3], (iii) decentralized sanitation [4,5], (iv) pyrolysis/torrefaction [6][7][8][9][10], (v) wastewater sludge treatment [11][12][13], (vi) organic waste treatment [14][15][16], and (vii) resource recovery/generation [17][18][19][20]. In all these cases, smouldering can be harnessed to generate energy from traditionally problematic wastes, such as those with high moisture contents (e.g., biomass sludges [15,21,22]) and low volatility (e.g., coal tars and heavy oils [2,3,[23][24][25]).…”

Plastic waste to liquid fuel: A review of technologies, applications, and challenges

“…They concluded that use of 25% catalysts could give better quality fuel for using in the automotive engines [106]. Pan et al [107] studied numerical investigation of novel smouldering-driven reactor for pyrolysis of waste plastics. The reactor consists of two chambersa smouldering chamber for production of heat by using char and a pyrolysis chamber using the heat from the smouldering chamber.…”

“…They observed that pyrolysis process becomes shorter to about 1h when high concentration of char was used, and the air velocity was increased. This led to the decrease in the light liquid (C5-C15) and heavy liquid (>C15) yields and an increase in gas (C1-C4) yield [107].…”