http://hdl.handle.net/2117/3146 2013-05-20T19:43:44Z http://hdl.handle.net/2117/15315 Title: Co-production of electricity and hydrogen from coal and biomass gasification Authors: Pérez Fortes, María del Mar; Bojarski, Aarón David; Puigjaner Corbella, Lluís Abstract: This work addresses the techno-economic and environmental analysis of an Integrated Gasification Combined Cycle power plant (IGCC) of 308 MWe of gross power, giving particular attention to co-gasification and co-production of electricity and H2. Products, sub-products and effluents distributions are estimated by means of an ad-hoc developed superstructure for conceptual design of syngas generation and treatment, delivering preliminary fiowsheets targeted to co-production. The resulting multi-objective optimization problem evaluates the trade-off between the cost of energy (COE), the total energy efficiency of the plant and the environmental impact evaluated through Impact 2002+ indicator. Sixteen scenarios are considered: 4 different feedstock's combined with 4 alteruative plant topologies; electricity generation from syngas, electricity generation from H2, and purified H2 production from fiue gas in a Pressure Swing Adsorption (PSA) unit in the Combined Cycle (CC). The case studies environmental boundary has been drawn from cradle to gateo The Pareto Frontiers (PF) for the Key Performance Indicators (KPIs) trade-off evaluation reveals that the scenario with petcoke as feedstock and H2 production with PSA fiue gas profit is the best one in terms of eHíciency maximization and COE minimization. Scenario with residual biomass without PSA fiue gas profit is the best in terms of environmental impact. 2012-02-22T19:18:26Z http://hdl.handle.net/2117/15084 Title: Odor control in urban areas originated from multiple focuses. Identification of potentially toxic compounds Authors: Gallego Piñol, Eva; Roca Mussons, Francisco Javier; Perales Lorente, José Francisco; Guardino Solà, Xavier Abstract: The application of olfactometric methods is the usual methodology employed nowadays to determine odor annoyance in urban areas and to measure odor emission rates in stationary focuses. The use of an odor reference substance (a chemical compound which is used as reference) for the odor assessment, especially when several odorous focuses could impact simultaneously in a particular point, is arguably. In addition to that, the sensorial methods used do not allow the discrimination of the potentially toxic substances responsible of the odor episodes, given that these methods do not identify the concrete chemical compounds that cause the odor. 2012-02-13T11:00:00Z http://hdl.handle.net/2117/14886 Title: Designing reactive distillation columns under explicit sustainability considerations Authors: Puigjaner Corbella, Lluís; Bojarski, Aarón David Abstract: Reactive distillation is one of the most attractive reactive separations, combining chemical reaction with the separation of chemicals, leading to new processes providing higher economy. This work investigates the sustainability of those process systems, which incorporate reactive distillation, through the use of Life Cycle Thinking via Life Cycle Assessment. Moreover we use economic and environmental metrics. The proposed decision support strategy is exemplified in the case of the synthesis of isopropyl myristate production using a reactive distillation column and a homogenous catalyst. Description: Homenatge al prf. Pierucci 2012-01-31T12:51:00Z http://hdl.handle.net/2117/6563 Title: Modeling anaerobic digestion proceses using a discrete bivariant distribution of gas bubbles and biomass aggregate sizes Authors: Flotats Ripoll, Xavier; Puigjaner Corbella, Lluís 2010-03-08T09:08:22Z