APPLICATION OF DIFFERENT CATALYSTS IN BIOMASS GASIFICATION IN UPDRAFT/DOWNDRAFT FIXED BED REACTORS
23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022, İstanbul, Turkey, 26 - 30 June 2022, pp.128-130, (Full Text)
- Publication Type: Conference Paper / Full Text
- City: İstanbul
- Country: Turkey
- Page Numbers: pp.128-130
- Keywords: Biomass, Catalyst, Gasification, Hydrogen, Renewable energy
- Dokuz Eylül University Affiliated: Yes
Abstract
This study aims to investigate the effects of different catalysts on biomass gasification. Two different types of red mud (RM1, RM2), white mud (WM), and aluminum - nickel alloy were used as catalysts with biomass mixture for the lab-scale gasification studies by using an updraft and a downdraft fixed bed reactors. Green waste (GW), sewage sludge (SS) and olive pomace (OP) were used as feedstock. The results showed that the highest concentration of H2 (47 vol.%) was observed in mixed sample with 0.05 L/min dry air at 900°C in updraft gasifier. In downdraft gasifier, max. H2 concentration was measured for mixed sample at 800°C while 0.1 L/min dry air was applied. In general, it has been observed that RM increases the H2 gas in the syngas between 1-7 vol.% at 900°C in updraft gasifier. In the downdraft reactor, on the contrary, H2 concentration in the syngas decreased by 2-6% with the addition of RM. However, when aluminum - nickel alloy was added to the samples, syngas production drastically increased and its H2 content was found more than 65% for both reactors. This study presents the research results on the catalytic effects on the syngas composition in detail.