VEGA BORRERO , Fernando

CO2 capture systems are typically divided into pre- post- and oxyfuel- combustion systems. However, the interest on hybrid systems, which integrate elements of more than one of the above systems, is attracting major attention in recent times due to the potential higher energy efficiency. In this work, degradation studies have been conducted to...

The reduction of CO2 emissions from anthropogenic sources in this century will require a higher reliance on carbon capture and storage (CCS) technologies. Post-combustion based on a regenerative chemical absorption is considered a mature and close-to-market option in near and mid-term. However, the high energy penalty related to solvent...

Se ha propuesto y puesto en práctica una nueva metodología de aprendizaje basado en problemas en una asignatura de carácter experimental en la carrera de ingeniería química en la Escuela Técnica Superior de Ingeniería de la Universidad de Sevilla (España). La metodología se basa en el trabajo con grupos reducidos y aprendizaje basado en...

This work evaluates and selects the best sequence of operations for the pretreatment of greenhouse agricultural wastes (GAW) derived from the main greenhouse crops of the west of Almeria (Spain), such as tomatoes, peppers, cucumbers, eggplants, zucchinis, watermelons and melons, before recovering its potential energy in a cement plant located...

Partial oxy-combustion is considered a promising carbon capture and storage technology that can lead to further energy penalty reductions. The presence of large amounts of CO2 in the flue gas should enhance the driven force in the bulk gas and hence the absorption performance. A novel concept known as Shift to Low Temperature configuration has...

Oxygen transport membranes (OTM) are a promising alternative to conventional systems of air separation based on cryogenic distillation for oxy-fuel combustion power plants. In this work, a systematic study of the thermochemical stability of La0.6Sr0.4Co0.2Fe0.8O3 (perovskite-type) and cobalt doped Ce0.9Gd0.1O (fluorite-type) is proposed. The...

Solvent degradation and volatile compound emissions are two of the major concerns about the deployment of carbon capture technologies based on chemical absorption. In this context, partial oxy-combustion might reduce the solvent degradation due to the use of a higher CO2 concentrated flue gas. This work evaluates the oxidative degradation of a...

Partial oxy-combustion is proposed as a new carbon capture concept based on the use of oxygen-enriched air as an oxidizer instead of air during the combustion stage followed by a CO2 chemical absorption. This novel approach has showed potential advantages compared with other CCS technologies that may lead to a further reductions of the energy...

La presente invención se refiere a un procedimiento y sistema de separación de CO2 basado en la absorción química regenerativa, que consta de un absorbedor donde el CO2 queda retenido en un líquido absorbente, y de un regenerador donde el CO2 es liberado, obteniendo un absorbente regenerado que es empleado nuevamente en la unidad de...

Chemical absorption is the most effective and mature post-combustion alternative that might be applied for carbon capture in fossilfuel power plants and other energy-intensive industries such as cement production, refineries and iron and steel manufacturing. In respect to the cement production, inherent CO2 emissions produced during the...

Un grupo de profesores del Departamento de Ingeniería Química y Ambiental de la Escuela Técnica Superior de Ingeniería de la Universidad de Sevilla ha realizado un trabajo de investigación-acción con el objetivo de mejorar los resultados docentes en la asignatura Experimentación en Ingeniería Química. El proceso de investigación-acción ha...

In this work a novel strategy for bio-methane production and magnesium chloride waste valorization is addressed. The proposed process is a potential alternative path to the already existing biogas upgrading technologies by carbon dioxide mineralization into valuable magnesium carbonate. The main parameters affecting the precipitation efficiency...

This work provides a wide overview of the state-of-art of the CO2 chemical absorption applied to Carbon Capture and Storage (CCS) technology. The objective is not only to provide the current status of the technology and the research and development activities carried out towards its deployment in the CCS field, but also to identify the future...

This article presents a regeneration method of a sodium hydroxide (NaOH) solution from a biogas upgrading unit through calcium carbonate (CaCO3) precipitation as a valuable by-product, as an alternative to the elevated energy consumption employed via the physical regeneration process. The purpose of this work was to study the main parameters...

Herein a strategy for biogas upgrading in a continuous flow absorption unit using CaCl 2 as capturing agent is reported. This process is presented as an alternative to the standard physical regeneration processes to capture carbon dioxide (CO 2 ) from biogas effluents with inherent high energy penalties. This work showcases a systematic study...

This paper reveals a regeneration method for a carbonate compound after carbon dioxide (CO 2 ) absorption in a biogas upgrading unit run with caustic mixtures, obtaining precipitated calcium carbonate (PCC) as valuable by-product. This process arises as an alternative to physical regeneration, which is highly energy intensive. This work...

La presente invención tiene por objeto un dispositivo que permite la determinación de la concentración de las partículas condensables presentes en las emisiones de fuentes estacionarias mediante método de muestreo por dilución, así como la concentración de partículas filtrables por muestreo isocinético en simultáneo y/o de manera...

Composición acuosa absorbente. La invención se refiere a una composición absorbente para capturar CO2 o cualquier otro gas ácido de una corriente gaseosa mediante absorción química regenerativa basada en un ajuste optimizado de la capacidad cíclica de trabajo del absorbente.

La invención se refiere a una composición absorbente para capturar CO2 o cualquier otro gas ácido de una corriente gaseosa mediante absorción química regenerativa basada en un ajuste optimizado de la capacidad cíclica de trabajo del absorbente.

Anthropogenic CO2 emissions are considered the major contributor of greenhouse gas emissions worldwide. The mitigation of this kind of CO2 emissions relies on a portfolio of alternatives where CO2 absorption appears as the nearest approach to be applied at industrial scale. Researchers have been focused on developing new formulations of...