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Title

Experimental investigation on sorption enhanced gasification (SEG) of biomass in a fluidized bed reactor for producing a tailored syngas

AuthorsMartínez Berges, Isabel; Kulakova, Viktoriia; Grasa Adiego, Gemma ; Murillo Villuendas, Ramón
KeywordsSteam gasification
Bubbling fluidized bed
Biomass
CO2 separation
Synthetic fuel production
Issue Date3-Oct-2019
PublisherElsevier
CitationFuel 259: 116252 (2020)
AbstractSynthetic fuel production from renewable energy sources like biomass is gaining importance driven by the ambitious targets for reducing greenhouse gas emissions worldwide. Sorption enhanced gasification (SEG) proposes carrying out the gasification of biomass in the presence of a CO2 sorbent, which allows producing a syngas with a suitable composition for a subsequent synthetic fuel production step. This study aims at analysing the effect of different operating parameters (e.g. steam-to-carbon (S/C) ratio, CO2 sorption capacity and sorbent-to-biomass ratio) in the syngas composition and char conversion obtained in a 30 kWth bubbling fluidized bed gasifier, using grape seeds as feedstock. The importance of reducing the formation of higher hydrocarbons through a high steam-to-carbon ratio and using a CO2 sorbent with high sorption capacity is assessed. C3-C4 and unsaturated C2 hydrocarbons contents below 1%vol. (in dry and N2 free basis) can be achieved when working with S/C ratios of 1.5 at gasification temperatures from 700 to 740 °C. Varying the amount of the CO2 separated in the gasifier (by modifying the temperature or the CO2 sorption capacity of the sorbent) the content of H2, CO and CO2 in the syngas produced can be greatly modified, resulting in a module M = (H2-CO2)/(CO + CO2) that ranges from 1.2 to almost 3.
Description6 Figuras.- 3 Tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.fuel.2019.116252
URIhttp://hdl.handle.net/10261/192595
DOI10.1016/j.fuel.2019.116252
ISSN0016-2361
E-ISSN1873-7153
Appears in Collections:(ICB) Artículos
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