Valorization of alcoholic wastes to produce H2 to .. (ECOELECTRICITY LIFE)
Valorization of alcoholic wastes to produce H2 to be used in the sustainable generation of electricity
(ECOELECTRICITY LIFE)
Start date: Oct 3, 2016,
End date: Dec 31, 2019
PROJECT
FINISHED
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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