Catalytic Supercritical Water Gasification of Refuse Derived Fuel for High Energy Content Fuel Gas

Abstract

Refuse derived fuel (RDF) was processed using hydrothermal gasification at high temperature to obtain a high energy content fuel gas. Supercritical water gasification of RDF was conducted at a temperature of 500 °C and 29 MPa pressure and also in the presence of a solid RuO2/γ-Al2O3 catalyst. The effect of residence time (0, 30 and 60 min) and different ruthenium loadings (5, 10, 20 wt% RuO2/γ-Al2O3) were investigated. Up to 93 % carbon gasification efficiency was achieved in the presence of 20 wt% RuO2/γ-Al2O3 catalyst. The fuel gas with the highest energy value of 22.5 MJ Nm−3 was produced with the 5 wt% RuO2/γ-Al2O3 catalyst after 30 min reaction time. The results were compared with the use of NaOH as a homogeneous catalyst. When NaOH was used, the maximum gross calorific value of the product gas was 32.4 MJ Nm−3 at 60 min reaction time as a result of CO2 fixation. High yields of H2 and CH4 were obtained in the presence of both the NaOH and RuO2/γ-Al2O3 catalysts.

Publication DOI: https://doi.org/10.1007/s12649-016-9597-y
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: © Springer Nature B.V. 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s12649-016-9597-y Funding: Turkish Government Scholarship to E.Y.
Uncontrolled Keywords: Waste,RDF,Supercritical,Gasification,Hydrogen,Catalyst
Full Text Link: https://link.sp ... 2649-016-9597-y
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PURE Output Type: Article
Published Date: 2017-03-01
Published Online Date: 2016-06-04
Accepted Date: 2016-05-21
Authors: Onwudili, Jude A. (ORCID Profile 0000-0002-5355-9970)
Yildirir, Eyup
Williams, Paul T.

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