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Valorization of alcoholic wastes to produce H2 to be used in the sustainable generation of electricity (ECOELECTRICITY LIFE)
Date du début: 3 oct. 2016, Date de fin: 31 déc. 2019 PROJET  TERMINÉ 

Background New technologies play an essential role in helping to mitigate climate change by reducing greenhouse gas (GHG) emissions. Impure alcohol fractions with low commercial value are a waste product of bioethanol manufacturing. A new technology has been designed to reuse these waste fractions to produce gaseous hydrogen-rich streams for the production of electricity by means of high temperature fuel cells. Objectives ECOELECTRICITY LIFE aims to design and construct a pilot plant to produce electricity using industrial purges containing impure ethanolic fractions from the distillation of bioethanol that have a low commercial value, due to their composition. Through its actions, the project aims to optimise a comprehensive catalytic reforming process for these ethanolic purges to produce gaseous hydrogen-rich streams for the production of electricity by means of high temperature fuel cells (solid oxide fuel cells - SOFCs). Expected results: The project expects to achieve the following results: Exploitation of impure alcohol fractions with low commercial value which are obtained during the purging operations carried out in the distilling and bioethanol production industries; A decrease in the production of CO2. Specifically, the reforming process would reduce CO2 emissions from the 6.56 kg CO2/L of impure alcohol that occurs when it is re distilled to 1.83 kg CO2/L of impure alcohol when it is reformed; Production of a reformed gas stream rich in hydrogen (H2) to generate electricity in a 3 kW SOFC. The reforming capacity of the pilot plant will be 1.2 L/h of impure alcohol, to produce at least 2 022 kg/h of a gas stream; Development of a self-sufficient process that reuses the by-products (heat and water) from the reforming reactor and SOFCs; Minimisation of the environmental impact of the overall process. The fact that the ethanolic purges come from renewable sources (biomass), will have a significant benefit in terms of reducing GHG emissions; and Creation of value for an industrial by-product (ethanolic purges) with low commercial interest, the production of which does not require land use change and is therefore beneficial to the environment.

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