Solid recovered fuel gasification in sliding bed reactor

This study examines a solid recovered fuel gasification process in the context of a regional, clean energy supply from an affordable source. The examination of this approach was performed under various equivalence ratios and load regimes. A unique cross/updraft gasification reactor with a fixed (sliding) bed over the circular grate with tangential gasification media intake was utilised. This technology is a perspective in waste-to-energy and waste-to-materials production. The investigated parameters included producer gas quality and purity, overall conversion efficiency and char material yield. It was found that a low material load is very beneficial in terms of gas purity and conversion efficiency, reaching up to 93%. Also, the formation of tar compounds was measured as low as 0.7 g/m3. However, when the equivalence ratio parameter was 0.14, the gas's lower heating value was only 2.4 MJ/m3. Also, a lower heating value equal to 5.0 MJ/m3 was reached in a low-efficiency regime (48%) when the fuel load was more significant (48.5 kg/h), and the equivalence ratio was only 0.04. The low tar content suggests a very clean process. Also, the material valorisation in the form of char is beneficial as this carbon-rich material no longer has a waste character and can be utilised in many fields. •Wood and waste gasification provides both material treatment and energy production.•The proces can produce high efficienci conversion of the material.•Gasification char contains high C (up to 75.5%) and has good sorption properties.•Tar compounds can be as low as 0.7 g/m3 for cross/updraft application. The environmental impact of disposed waste materials is significant. This article focuses on waste management problematics and presents a novel approach to waste material conversion and valorisation from the sustainable energy and material chain points of view.