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Processi di adsorbimento di alidi e H2S contenuti in biogas per l'alimentazione di MCFCs
No full textAdsorbimento di H2S in biogas prodotto mediante digestione anaerobica di reflui zootecnici per l'alimentazione di MCFCs
No full textSviluppo di un sistema di produzione di energia elettrica basato su fuel cells alimentate da biogas
No full textA Case Study of a Solid Oxide Fuel Cell Plant on Board a Cruise Ship
Get PDFThe work is a case study of a cruise ship supplied by liquefied natural gas (LNG) and equipped with a solid oxide fuel cell (SOFC). It is supposed that a 20 MW SOFC plant is installed on-board to supply hotel loads and assisting three dual-fuel (DF) diesel/LNG generator sets. LNG consumption and emissions are estimated both for the SOFC plant and DF generator sets. It results that the use of LNG-SOFC plant in comparison to DF generator sets allows to limit significantly the SOx, CO, NOx, PM emissions and to reduce the emission of CO2 by about 11%. A prediction of the weight and volume of the SOFC plant is conducted and a preliminary modification of the general arrangement of the cruise ship is suggested, according to the latest international rules. It results that the SOFC plant is heavier and occupies more volume on board than a DF gen-set; nevertheless, these features do not affect the floating and the stability of the cruise ship
Advancing zero-emission maritime solutions: Case study of an ammonia-powered fuel cell system implementation
No full textH2S Removal from Biogas for Fueling MCFCs: New Adsorbing Materials
No full textCu and Zn modified 13X zeolites prepared by ion exchange or impregnation and activated carbons (ACs) treated with KOH, NaOH or Na2CO 3 solutions were studied as H2S sorbents for biogas purification for fuelling molten carbonate fuel cells. H2S sorption was studied in a new experimental set-up equipped with a high sensitivity potentiometric system for the analysis of H2S. Breakthrough curves were obtained at 40°C with a fixed bed of 20 mg of the samples under a stream (6 L h-1) of 8 ppm H2S/He mixture. The adsorption properties of 13X zeolite improved with addition of Cu or Zn:Cu exchanged zeolite showed the best performances with a breakthrough time of 580 min at 0.5 ppm H2S, that is 12 times longer than the parent zeolite. In general, unmodified and modified ACs were more effective H2S sorbents than zeolites. Treating ACs with NaOH, KOH, or Na2CO3 solutions improved the H2S adsorption properties: AC treated with Na 2CO3 was the most effective sorbent, showing a breakthrough time of 1222 min at 0.5 ppm, that is twice the time of the parent AC. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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Maria Turco, Angelo Ausiello, Luca Micoli “Treatment of Biogas for Feeding High Temperature Fuel Cells. Removal of Harmful Compounds by Adsorption Processes” Green Energy Technology, Springer Ed. (Switzerland) 2016 ISSN1865-3529 ISBN 978-3-319-03214-6 DOI 10.1007/978-3-319-03215-3
No full textPreliminary Investigation of a Multi-MW Solid Oxide Fuel Cell Power Plant to be Installed on Board a Cruise Ship
Get PDFConcept Risk Analysis of a Full-electric Passenger Catamaran Ferry Equipped with Hydrogen-fuelled Pem Fuel Cell and Battery Systems
No full textThe work considers a zero-emission high-speed catamaran ferry equipped with a hybrid powertrain, based on a full-electric propulsion system, and its preliminary risk analysis. Globally, there is major attention on full-electric vessels to comply with the IMO regulations related to ship emissions and energy efficiency improvement, and the assessment of possible risks due to the installation of green technologies. This study aims to analyze the risk assessment for the implementation of an onboard fuel cell power generating system integrated with the propulsion plant and the energy storage to evaluate its arrangements with particular attention to the preliminary identification of hazardous areas. The passenger craft is 30 m in length and 10 m wide, and it is intended to operate on the Amalfi coast, carrying 220 passengers at a cruise speed of 20 knots. The power system consists of a proton-exchange membrane fuel cell (PEMFC) system, with a nominal power of 1600 kWe, a battery pack with a capacity of 400 kWh, a 750-kW electric motor, and their relative balance of the plant (BoP) subsystems. The PEM is fuelled by pure hydrogen stored in type IV cylinder vessels at 700 bars
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