Coupling effect of the refuse and sludge on the physical and combustible properties of the densified pellets for energy production

Jinlong Fang, Jun He, Yubin Hong, Zijun Luo, Huapeng Ke, Zixuan Fan, Oujun Tang, Zenghui Diao, Diyun Chen and Kong Lingjun

Renewable Energy, 2023, vol. 216, issue C

Abstract: Recycling and converting the loose refuse and sludge into densified fuels (S-RDF) is promising for energy production, in which the sludge could be a suitable binder that can be combusted adequately for treatment. The increase in the sludge content and compress pressure positively influenced the physical properties of the S-RDF. Especially, the S-RDF with a mass content of 20% of sludge performed the favorable density of 1.2 g/cm3 and featured an abrasive resistance of 6.542% when the pressure was only 1 MPa, being similar to the RDF being compressed at 4 MPa without sludge. Also, it can be pelletized on industrial scale with a power of 7.5 KW. The results confirmed the positive effect of the sludge on the physical properties of RDF. S-RDF has a high calorific value of 2.25 × 104 kJ/dm3, and the ignition loss of S-RDF slag is low to 2% due to the promoting combustion of sludge by flammable waste. Thus, it is promising to facilitate the recycling and conversion of refuse and sludge into energy to address sustainable development.

Keywords: Sludge; Refuse; Fuel pellets; Combustion; Energy (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:216:y:2023:i:c:s0960148123009953

DOI: 10.1016/j.renene.2023.119081

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