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Problema Bal de Materia enero 2023

Transferencia de materia, fenómenos de transporte

Balance materia julio 2023

Problema reactor ideal julio 2023

Reactor NO ideal - convocatoria julio 2023

CSTR con trazador en impulso - visualización de RTD

High nitrate levels in groundwater must be reduced as per legal guidelines to ensure that water is suitable for human consumption. Techniques such as ion exchange, reverse osmosis, electrodialysis, and biological denitrification have proven to be successful on an industrial scale. Unfortunately, the catalytic reduction of nitrate to nitrogen with hydrogen has not been commercialized despite 30 years of research. The main problem is that the reduction produces nitrite and ammonium byproducts above the permitted legal levels, making water unsuitable for human consumption. This research postulates that thermodynamics, rather than kinetics, limits achieving the desired selectivity. We use a thermodynamic approach, known as the attainable region, to compare the theoretical analysis to the experimental data. The graphical results show why it is so difficult to avoid the production of byproducts.

Problema examen reactor no ideal convocatoria enero 2023.

Resolución problema reactor ideal enero 2023.

Resolución pormenorizada del problema de reactor no ideal (enero 2022)

Problema de balance de materia con reacción resuelto (examen de enero 2022)

Resolución pormenorizada del problema de reactor ideal (enero 2022)

En el ámbito de la arquitectura y la ingeniería, las materias básicas aplicadas u obligatorias de primeros cursos como las matemáticas, la física o la introducción a la ingeniería química son consideradas de especial relevancia y fundamentales en el proceso de aprendizaje como base para poder afrontar el resto de las asignaturas. Prueba de ello, es patente la presencia de asignaturas correspondientes a dichas materias en todas las titulaciones de grado de las ingenierías o arquitecturas, especialmente en el primer curso. Debido su importancia, se hace necesario proponer metodologías y herramientas que permitan una docencia de calidad, permitiendo al estudiante alcanzar las competencias y objetivos de aprendizaje establecidos. En este proyecto se propone un sistema de aprendizaje basado en tecnologías de la información, que permitirá una docencia flexible, pudiendo ser adaptado a diferentes asignaturas fundamentales impartidas en el área de la ingeniería y la arquitectura, y pudiendo ser aplicado de forma personalizada a cada estudiante en función de su nivel y progreso.

Resolución problema de examen parcial, balance de materia, noviembre 2022, Universidad de Alicante.

Resolución problema examen Diseño Reactores 1, julio 2022

Resolución del problema de Reactor Ideal - Julio 2022

The threat posed by Climate Change demands urgent action on finding clean energy solutions with a view to cutting fossil fuel consumption. However, a sudden stop in the use of fossil fuels is not possible without a profound disruption of the economy. This transition is expected to take several decades, and therefore every type of renewable energy should be considered as part of the solution mix. In this work, we propose including gasoline synthesized from atmospheric CO2 as one possible interim solution while the transition away from liquid fossil fuels intensifies. To that end, we have designed a novel process that produces green gasoline in one stage on an industrial scale. This contrasts with the two or three stages needed in the classical Fischer-Tropsch based processes. Furthermore, we have optimized this process through mass and heat integration, and propose three different options that make the most of the waste streams. Finally, we have studied a total of 144 realistic scenarios that take into account the origin of H2 and CO2 as well as their environmental impacts and costs. According to our findings, such a process will be capable of producing high-quality gasoline to be manufactured competitively in the near future. The significance of our findings is that it is realistic to reduce carbon emissions while also promoting the circular economy.

En esta memoria se presenta el trabajo desarrollado a lo largo del curso 2020-2021 desarrollado sobre la evaluación de las experiencias educativas que se han puesto en marcha en distintas titulaciones científico-técnicas de la Universidad de Alicante. La investigación se ha circunscrito a siete asignaturas relacionadas con las ciencias y las ingenierías de primero a cuarto de Grado y Máster. La idea inicial era recopilar las mejores tecnologías aplicadas en esta universidad, analizarlas, compararlas con las tradicionales y extraer las que mejores resultados dan dependiendo de la tipología de la asignatura. Sin embargo, ha resultado complejo extraer conclusiones válidas para todo tipo de asignaturas con independencia de las características de las mismas. En general, se puede concluir que la implementación de metodologías innovadoras recompensa el esfuerzo por ambas partes. Sin embargo, implica muchas veces una inversión de tiempo que no compensa ese esfuerzo. Otro hallazgo interesante ha sido constatar que los recursos y metodologías tradiciones bien implementadas pueden ser perfectamente válidos. Eso sí, haciendo especial énfasis en promover la participación y el trabajo autónomo del alumnado, buscando la motivación del mismo a través de retos de razonamiento que le impulsen a profundizar en la comprensión de la materia.

Resolución pormenorizada del problema del parcial de materia del curso 2021-22

Problema resuelto de fenómenos de transporte (transferencia de materia) convocatoria junio 2021

Resolución del problema de reactor ideal de la asignatura Diseño de Reactores I, convocatoria julio 2021

Resolución del problema de reactor no ideal, de la asignatura Diseño de Reactores I, convocatoria Julio 2021

Problema resuelto de balance de materia de la asignatura Introducción a la Ingeniería Química, convocatoria julio 2021

Resolución detallada del problema de balance de materia del examen final enero 2021

Resolución detallada del problema del parcial de material.

Resolución detallada del problema de reactor ideal de enero 2021 - Asignatura "Diseño de Reactores I", disciplina "Ingeniería Química".

Resolución del problema de reactor NO ideal de la convocatoria de enero 2021

The communication is a presentation for a research article written for the Education for Chemical Engineers journal. In it, it is shown how to integrate environmental considerations into the subject of mathematical optimization that might make it a worthwhile read (https://doi.org/10.1016/j.ece.2020.05.005).

Given the damage that the natural environment suffers from human activities, it is relevant to provide ecological literacy to all Chemical Engineering students. Sometimes, this information is offered through elective courses and/or seminars and consequently it might not reach the whole class. Some courses have more obvious connections to environmental issues, while others do not appear to. In this paper, we aim to show through some solved examples how to introduce an environmental topic in the subject Mathematical Optimization. The problems goal is to decide on the best logistics for the transport and management of human waste that will be used in the production of sustainable energy. The context is that of improving the sanitation and hygiene in areas of the developing world, while simultaneously creating job opportunities within the communities. The research that we have conducted for finding the proper way to address the environmental analysis in class, led us first to the Sustainable Development Goals (SDGs), but later on, other theories such as the Cradle-to-Cradle (C2C) have proven to be more comprehensive and therefore, better. We believe that this multidisciplinary paper shows how to integrate environmental concerns and understanding in the Chemical Engineering curricula.

With over 20 billion gallons of bio-ethanol produced annually, optimization of bio-ethanol production processes is a major priority for sustainability research. Recent research has made great strides toward improving the efficiency of bio-ethanol production through the development of gasoline pre-blending processes which use liquid–liquid phase separation to eliminate excess water with minimal energy input. This paper investigates the effects of process parameters on the performance and efficiency of this class of processes, offering a design basis for engineers developing new processes along with a broader understanding of their potential performance and economic value. Also explored are a range of process modifications capable of improving process performance. It has been found that blending ratio and initial alcohol concentration are the key parameters in determining ethanol recovery, with the number of liquid–liquid contact stages and the temperature also being significant. It has also been shown that temperature-swing decanting can significantly improve alcohol recovery, reducing ethanol losses by as much as 33% in a typical gasoline pre-blending setup.

Transport emissions account for around a quarter of all CO2 emissions and so, automotive fuels are a key area of research for combating climate change. Widespread adoption of bio-ethanol fuel blends has been the first step in this direction. However, the economic and environmental viability of bio-ethanol usage is hampered by inefficiencies in its production, resulting in a need for significant improvements. The gasoline pre-blending method is a recent advancement that shows great promise in minimizing the separation energy required for bio-ethanol recovery by circumventing full purification and using gasoline’s phase equilibrium properties to eliminate water from a partially purified fermentation product. This paper models all possible gasoline pre-blending processes incorporating ethanol, butanol or both. It is found that butanol is highly suitable for gasoline pre-blending and that high recovery can be achieved even when starting with dilute concentrations. In addition, the presence of even small amounts of butanol is effective at drawing ethanol into the fuel phase, improving the overall alcohol recovery. Energy savings of up to 19% have been shown using a case study while a graphical methodology for preliminary design and synthesis of any gasoline pre-blending process has been developed, allowing for rapid flowsheet development and performance prediction.

Comments on “Use of Rh (III)-Heteropolymolybdate as Potential Catalysts for the Removal of Nitrates in Human Drinking Water: Synthesis, Characterisation and Catalytic Performance” by María A. Jaworski et al. (Water Air Soil Pollut (2018) 229: 309)

Over the past 29 years there have been myriad research efforts into the catalytic removal of nitrates from drinking water. In this work, 147 papers published during that period have been examined from the point of view of the ability of catalysis to produce water that is suitable for human consumption as well as amenable to industrial scale-up at reasonable working conditions of temperature and residence time. After close examination of the aforementioned articles, it is evident that this methodology has fulfilled only half its aims: it is able to reduce the nitrate concentration to guideline levels for human consumption, but it inevitably produces concentrations of ammonia and nitrites that are beyond the accepted limits for safe consumption of water. It is sometimes recommended that catalysis be combined with an ancillary technique, such as adsorption, in order to eliminate the undesirable byproducts mentioned above. However, this implies resorting to extra treatment units at the industrial scale, thus making the whole treatment process more complex and expensive. Our conclusion is that the effective catalytic removal of nitrates from drinking water is a very difficult problem.

Currently, membrane gas separation systems enjoy widespread acceptance in industry as multistage systems are needed to achieve high recovery and high product purity simultaneously, many such configurations are possible. These designs rely on the process engineer's experience and therefore suboptimal configurations are often the result. This article proposes a systematic methodology for obtaining the optimal multistage membrane flow sheet and corresponding operating conditions. The new approach is applied to cross-flow membrane modules that separate CO2 from CH4, for which the optimization of the proposed superstructure has been achieved via a mixed-integer nonlinear programming model, with the gas processing cost as objective function. The novelty of this work resides in the large number of possible interconnections between each membrane module, the energy recovery from the high pressure outlet stream and allowing for nonisothermal conditions. The results presented in this work comprise the optimal flow sheet and operating conditions of two case studies.

Tras el análisis de los resultados de los primeros dos cursos del Máster de Ingeniería Química (cursos académicos 2014/15 y 2015/16) impartidos en la Universidad de Alicante, ha quedado patente la necesidad de seguir coordinando las asignaturas obligatorias de este Máster. Esta coordinación que es importante para cualquier curso universitario, es aún más necesaria en másteres como éste que empiezan su docencia en el mes de octubre, en vez de en septiembre como lo hacen muchos grados. El trabajo que proponemos tiene un carácter empírico y lleva asociado un doble propósito: por una parte se trata de corroborar si la coordinación realizada por los profesores meses antes del comienzo curso 2016/17 se ha llevado a cabo y, por otra parte, enmendar la coordinación para ser aún más realistas de cara al curso 2017/18. La intención final de la coordinación es lograr que el alumno lleve una carga semanal homogéneamente distribuida durante el cuatrimestre, ajuste su trabajo no presencial a las horas que conllevan los créditos ECTS de la asignatura, y solucionar las posibles inconsistencias que existan en las guías docentes de las asignaturas.

Society is continuously facing challenges for safer chemical plants design, which is usually driven by economic criteria during the early steps of the design process, relegating safety concerns to the latest stages. This paper highlights the synergy of merging Process System Engineering tools with inherent safety principles. First, we design a superstructure that comprises several alternatives for streams, equipment, and process conditions, which exhibit different performance of economic and inherently safer indicators, the total annualized cost, and the Dow’s Fire and Explosion Index, respectively. The solution to this multiobjective problem is given by a Pareto set of solutions that indicates the existing trade-off between both objectives. The capabilities of the proposed framework are illustrated through two case studies, which solutions provide valuable insights into the design problem and are intended to guide decision-makers toward the adoption of inherently safer process alternatives.