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Título

The uses of bioethanol in chemical looping processes

AutorGarcía Labiano, Francisco CSIC ORCID ; García-Díez, Enrique CSIC; Diego Poza, Luis F. de CSIC ORCID ; Abad Secades, Alberto CSIC ORCID ; Adánez Elorza, Juan CSIC ORCID
Palabras claveBECCS
Hydrogen
CO2 emissions
Bioethanol
Renewable energies
Fecha de publicaciónabr-2018
EditorNova Science Publishers
CitaciónBioethanol and Beyond. Advances in production process and future directions 12: 315-344 (2018)
ResumenThe concentration of CO2 in the atmosphere has greatly increased over the last decades, very recently exceeding 400 ppm as a consequence of the anthropogenic CO2 emissions. The use of new alternatives to reduce these emissions is therefore highly encouraged. BioEnergy and Carbon Capture and Storage (BECCS) is emerging as an interesting option for the removal of CO2 from the atmosphere, and is seen as one of the best alternatives for meeting the target set out by the United Nations Framework Convention on Climate Change (UNFCCC) in the Paris Agreement: to limit the increase in the average world temperature to 2°C above pre-industrial levels. In this context, Chemical Looping (CL) is considered to be one of the most promising CO2 capture technology due to its low economic and energy costs. The process is based on the use of an oxygen carrier to transfer the oxygen from air to the fuel, preventing the contact between them. The large-scale deployment of CL technologies could present an important advantage for future bioethanol uses. This chapter describes the current status of bioethanol use in two processes: Chemical Looping Combustion (CLC) for energy production (heat & electricity), and Chemical Looping Reforming (CLR) for syngas/H2 generation. The chapter includes the basic concepts of the technology with a focus on the use of bioethanol and potential oxygen carriers, and operational experience in continuous units. Special interest is given to the use of bioethanol in autothermal-CLR processes, where H2 can be obtained as a final product without the need for external heat input, and with high CO2 capture efficiencies and producing a pure N2 stream. In addition, the possibility of using low-grade bioethanol in the process implies important savings in energy and economic costs during the bioethanol production process.
URIhttp://hdl.handle.net/10261/184584
Identificadoresisbn: 9781536134780
isbn: 9781536134797
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