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The oxy-combustion process is one of the alternatives which have been evaluated to counteract the increase in CO2 emissions over recent years. This technology consists of a combustion process with oxygen instead of air, which facilitates the capture of CO2 after the flue gas treatment process. Nowadays, oxy-combustion has not been implemented full-scale because of the high energy and economic requirements of the air separation unit to provide oxygen to the process. This paper proposes to ion transport membranes as a replacement for the air separation unit in order to minimize their high energy penalty of the overall system power. In particular, this work presents four processes based on the oxygen-fired plant with an oxygen transport membrane unit. As benchmark cases used to quantify the energy penalties for CO2 capture, the correspondent air combustion process without CO2 capture and a cryogenic oxygen-fired process (Case1) were considered. The thermodynamic comparison between the proposal alternatives has been conducted through simulation models based on Aspen Plus tools. The net electric power and the net efficiency of electricity production have been used as key parameters, which have allowed achieving an optimal system design that provides reduces the power consumption related to separate oxygen from the air. As the results show, the oxygen transport membranes concept exhibits better net electrical efficiency (35.7% vs. 30.6%), lower efficiency drop (2.5% vs. 7.6%) and lower specific captured CO2 (986 gCO2/hkWnet vs. 1140 gCO2/hkWnet) compared to the cryogenic oxygen-fired process.
E. Portillo; Luz M. Gallego Fernández; F. Vega; B. Alonso-Fariñas; B. Navarrete. Oxygen transport membrane unit applied to oxy-combustion coal power plants: A thermodynamic assessment. Journal of Environmental Chemical Engineering 2021, 9, 105266 .
AMA StyleE. Portillo, Luz M. Gallego Fernández, F. Vega, B. Alonso-Fariñas, B. Navarrete. Oxygen transport membrane unit applied to oxy-combustion coal power plants: A thermodynamic assessment. Journal of Environmental Chemical Engineering. 2021; 9 (4):105266.
Chicago/Turabian StyleE. Portillo; Luz M. Gallego Fernández; F. Vega; B. Alonso-Fariñas; B. Navarrete. 2021. "Oxygen transport membrane unit applied to oxy-combustion coal power plants: A thermodynamic assessment." Journal of Environmental Chemical Engineering 9, no. 4: 105266.
Control of greenhouse gas emissions has become one of the most important challenges faced by humanity. Among the various approaches to mitigate CO2 emissions, carbon capture and storage is considered one of the most promising clean coal options for the future because it can be implemented in the short and medium terms at the industrial scale. Among them, oxy‐combustion offers advantages that can counteract this environmental problem. This technology uses pure oxygen as a comburent, wherein a flue gas composed mainly of CO2 and water vapor is generated. Cryogenic air separation is the only available technology that can provide the required amount of oxygen. However, this process requires large amounts of energy and is costly, which make its large‐scale implementation difficult. In this framework, oxygen transport membranes are being researched as an oxygen supplier unit because they offers advantages from a techno‐economic viewpoint. In the present work, the thermochemical stabilities of La0.6Sr0.4Co0.2Fe0.8O3 and cobalt‐doped Ce0.9Gd0.1O were evaluated to obtain information on their behavior in oxy‐combustion atmospheres. Experiments were performed in a circulating fluidized bed boiler of a pilot plant by use of an experimental sampling train. Samples of the two materials were characterized by X‐ray diffraction, X‐ray fluorescence, infrared spectroscopy, Raman spectroscopy, scanning electron microscopy with energy‐dispersive X‐ray spectroscopy, and Brunauer–Emmett–Teller analysis. The results revealed that both materials were susceptible to the presence of species that originated from flue gas, materials of the boiler and ducts, and coal ash and CGO_Co material was superior of the two studied materials. This article is protected by copyright. All rights reserved.
Esmeralda Portillo; Mercedes Cano; L Marina Gallego Fernández; Fernando Vega; Benito Navarrete; Tomas Ramirez Reina. Thermochemical evaluation of oxygen transport membranes under oxy‐combustion conditions in a pilot‐scale facility. Journal of Chemical Technology & Biotechnology 2020, 95, 1865 -1875.
AMA StyleEsmeralda Portillo, Mercedes Cano, L Marina Gallego Fernández, Fernando Vega, Benito Navarrete, Tomas Ramirez Reina. Thermochemical evaluation of oxygen transport membranes under oxy‐combustion conditions in a pilot‐scale facility. Journal of Chemical Technology & Biotechnology. 2020; 95 (7):1865-1875.
Chicago/Turabian StyleEsmeralda Portillo; Mercedes Cano; L Marina Gallego Fernández; Fernando Vega; Benito Navarrete; Tomas Ramirez Reina. 2020. "Thermochemical evaluation of oxygen transport membranes under oxy‐combustion conditions in a pilot‐scale facility." Journal of Chemical Technology & Biotechnology 95, no. 7: 1865-1875.
BACKGROUND Carbon capture and storage is considered one of the pillars that should support the GHG emission mitigation by 2050. In this sense, partial oxy‐combustion emerges as a promising alternative. Its advantages rely on the production of a higher CO2 concentrated flue gas than these provided by conventional air‐firing processes. The use of higher CO2 concentrations should improve the solvent kinetic and the CO2 cyclic capacity. RESULTS The kinetic behavior of two representative sterically hindered amines, namely 2‐amino‐2‐methyl‐1‐propanol (AMP) and isophrondiamine (IF), were studied under partial oxy‐combustion conditions in a lab‐scale semi‐batch reactor. The CO2 concentration varied from 15%v/v to 60%v/v. The kinetic enhancement experienced by AMP at high CO2 concentration was slightly over 60%, instead of 70%‐80% for IF. AMP also improved its CO2 absorption capacity by 24.7%, from 15%v/v to 60%v/v, almost doubled the improvements achieved by MEA. In the case of IF experiments, the CO2 loading increased around 10% from 15%v/v to 60%v/v CO2 and it changed from 1.10 to 1.34 mole CO2 per mole solvent, more than a 20% of increase. CONCLUSIONS The presence of higher CO2 concentrations accelerated the CO2 absorption and provided higher CO2 absorption rates. In addition, the evolution of the CO2 loading also exhibited higher values in the experiments using higher CO2 concentrated flue gas. The steric hindrance causes a hybrid behavior in these solvents, between both fast and slow kinetic solvents. The kinetic rates observed using AMP were slightly higher than MEA, but lower than IF which showed the fastest kinetics. This article is protected by copyright. All rights reserved.
Sara Camino; Fernando Vega; Luz M. Gallego Fernández; Mercedes Cano; José A. Camino; Benito Navarrete. Kinetic evaluation of sterically hindered amines under partial oxy‐combustion conditions. Journal of Chemical Technology & Biotechnology 2020, 95, 1858 -1864.
AMA StyleSara Camino, Fernando Vega, Luz M. Gallego Fernández, Mercedes Cano, José A. Camino, Benito Navarrete. Kinetic evaluation of sterically hindered amines under partial oxy‐combustion conditions. Journal of Chemical Technology & Biotechnology. 2020; 95 (7):1858-1864.
Chicago/Turabian StyleSara Camino; Fernando Vega; Luz M. Gallego Fernández; Mercedes Cano; José A. Camino; Benito Navarrete. 2020. "Kinetic evaluation of sterically hindered amines under partial oxy‐combustion conditions." Journal of Chemical Technology & Biotechnology 95, no. 7: 1858-1864.
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 directions and knowledge gaps. A summary of the conventional solvents used for acid gas removal and novel solvent formulations specifically adapted to new challenges such as fossil-fuels power plants and industrial processes was reported. Novel configurations from the conventional CO2 absorption-desorption layout were summarized and their impact on the operational performance and the reboiler duty was further evaluated. Novel opportunities offered by CO2 concentrated flue gas derived from partial oxy-combustion were further discussed in the final section. A large review of the published data from pilot plants has been done to facilitate the final comparison between the current status of post-combustion and novel partial oxy-combustion configurations. Demonstration plants currently available and the commercial solutions proposed by the most important companies were briefly described. CCS pilot plants via chemical absorption have been executed in last decades reaching several CO2 capture capacities up to 80 t CO2/day. Commercial scale plants have been recently developed, being US and China the countries which lead the investment funds. The most important commercial scale demo plants, namely Boundary Dam and Petra Nova, were also described. Nevertheless, there were still many countries which need to bet for CCS at large scale.
F. Vega; Francisco Manuel Baena Moreno; Luz M. Gallego Fernández; E. Portillo; B. Navarrete; Zhien Zhang. Current status of CO2 chemical absorption research applied to CCS: Towards full deployment at industrial scale. Applied Energy 2019, 260, 114313 .
AMA StyleF. Vega, Francisco Manuel Baena Moreno, Luz M. Gallego Fernández, E. Portillo, B. Navarrete, Zhien Zhang. Current status of CO2 chemical absorption research applied to CCS: Towards full deployment at industrial scale. Applied Energy. 2019; 260 ():114313.
Chicago/Turabian StyleF. Vega; Francisco Manuel Baena Moreno; Luz M. Gallego Fernández; E. Portillo; B. Navarrete; Zhien Zhang. 2019. "Current status of CO2 chemical absorption research applied to CCS: Towards full deployment at industrial scale." Applied Energy 260, no. : 114313.
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 experiments were developed in a laboratory scale facility, which is able to mimic realistic oxy-fuel combustion flue gas containing SOx, NOx, H2O and CO2. In order to understand the thermochemical behavior of this type of materials, a full characterization analysis of the tested samples using a wide portfolio of analytical techniques such as X-ray diffraction (XRD), X-ray fluorescence (XRF), infrared spectroscopy (ATR-FTIR), Raman spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) and Brunauer−Emmett−Teller analysis (BET) has been carefully discussed. Our data revealed the superior stability of the CGO samples in comparison with the LSCF at all the test conditions studied in this work. The formation of crystalline and amorphous sulphates and carbonates are evident for the LSCF while for the CGO samples do not react with SOX and barely form carbonates. The presence of silicon species – typically ignored in academic works – has been detected, pointing its relevance for real applications.
E. Portillo; T.R. Reina; M. Cano; F. Vega; B. Navarrete. Understanding the thermochemical behavior of La0.6Sr0.4Co0.2Fe0.8O3 and Ce0.9Gd0.1O_Co oxygen transport membranes under real oxy-combustion process conditions. Solid State Ionics 2019, 341, 115039 .
AMA StyleE. Portillo, T.R. Reina, M. Cano, F. Vega, B. Navarrete. Understanding the thermochemical behavior of La0.6Sr0.4Co0.2Fe0.8O3 and Ce0.9Gd0.1O_Co oxygen transport membranes under real oxy-combustion process conditions. Solid State Ionics. 2019; 341 ():115039.
Chicago/Turabian StyleE. Portillo; T.R. Reina; M. Cano; F. Vega; B. Navarrete. 2019. "Understanding the thermochemical behavior of La0.6Sr0.4Co0.2Fe0.8O3 and Ce0.9Gd0.1O_Co oxygen transport membranes under real oxy-combustion process conditions." Solid State Ionics 341, no. : 115039.
Coal-fired power plants are considered to be one of the industrial technologies with a substantial contribution to climate change. In order to reduce their environmental impact, carbon capture and storage have acquired importance as a future clean coal technology in short and medium term. Concerning the closer-to-market options for CO2 capture, oxy-combustion is seen as one of the promising zero-emission plants due to the possibility of its suitability in existing boilers. This technology uses oxygen as the oxidant for combustion, providing a raw CO2 product which contains mainly water vapor, oxygen and nitrogen. Currently, cryogenic air separation is the only available mature option on a commercial scale. However, this system involves a high capital investment and an energy penalty in the oxy-fuel process, thus hindering its full-scale commercialization. As oxygen transport membranes offer significant advantages compared to the previous alternative, this option is foreseen as a candidate for its replacement. This work includes a review of this system and focuses on the study of the possible alternatives for integration into the oxy-fuel combustion process. As a result of this research, the compiled information has been homogenized, providing a completed base data related to operating parameters, required equipment and location of the combustion process for each studied alternative.
Esmeralda Portillo; Bernabé Alonso-Fariñas; Fernando Vega; Mercedes Cano; Benito Navarrete. Alternatives for oxygen-selective membrane systems and their integration into the oxy-fuel combustion process: A review. Separation and Purification Technology 2019, 229, 115708 .
AMA StyleEsmeralda Portillo, Bernabé Alonso-Fariñas, Fernando Vega, Mercedes Cano, Benito Navarrete. Alternatives for oxygen-selective membrane systems and their integration into the oxy-fuel combustion process: A review. Separation and Purification Technology. 2019; 229 ():115708.
Chicago/Turabian StyleEsmeralda Portillo; Bernabé Alonso-Fariñas; Fernando Vega; Mercedes Cano; Benito Navarrete. 2019. "Alternatives for oxygen-selective membrane systems and their integration into the oxy-fuel combustion process: A review." Separation and Purification Technology 229, no. : 115708.
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 regeneration and solvent degradation are two of the main drawbacks hindering the deployment of this technology. Partial oxy-combustion is considered a promising CCS technology that can substantially decrease the reboiler duty due to the increase on the CO2 partial pressure in the flue gas and hence the driving force in the absorber compared to conventional post-combustion approaches. This work explores the potentialities of partial oxy-combustion in a bench-scale CO2 capture unit to evaluate the benefits on the CO2 separation stage. The experimental facility consists of a regenerative CO2 chemical absorption process with a CO2 removal capacity of 0.48 kg/h. The most relevant operating parameters such as temperature, CO2 loading and L/G ratios were evaluated under variations of the CO2 concentration of the flue gas, ranging between 15%v/v and 60%v/v CO2, in order to obtain the optimal reboiler duty associated to the solvent regeneration. Results showed that the use of four packing bed improved the CO2 absorption performance. Although the optimal L/G ratios were moved to higher values, they also achieved CO2 removal efficiencies over 95% and lower energy consumptions compared with the baseline case (post-combustion). Experiments carried out using a 60%v/v CO2 in the flue gas provided 95.7% of CO2 removal efficiency and the lowest reboiler duty (4.74 GJ/t CO2) which resulted in a 57% reduction of the specific energy consumption compared with the post-combustion run.
F. Vega; S. Camino; L.M. Gallego; M. Cano; B. Navarrete. Experimental study on partial oxy-combustion technology in a bench-scale CO2 capture unit. Chemical Engineering Journal 2019, 362, 71 -80.
AMA StyleF. Vega, S. Camino, L.M. Gallego, M. Cano, B. Navarrete. Experimental study on partial oxy-combustion technology in a bench-scale CO2 capture unit. Chemical Engineering Journal. 2019; 362 ():71-80.
Chicago/Turabian StyleF. Vega; S. Camino; L.M. Gallego; M. Cano; B. Navarrete. 2019. "Experimental study on partial oxy-combustion technology in a bench-scale CO2 capture unit." Chemical Engineering Journal 362, no. : 71-80.
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 that may affect NaOH regeneration using an aqueous sodium carbonate (Na2CO3) solution and calcium hydroxide (Ca(OH)2) as reactive agent for regeneration and carbonate slurry production, in order to outperform the regeneration efficiencies reported in earlier works. Moreover, Raman spectroscopy and Scanning Electron Microscopy (SEM) were employed to characterize the solid obtained. The studied parameters were reaction time, reaction temperature, and molar ratio between Ca(OH)2 and Na2CO3. In addition, the influence of small quantities of NaOH at the beginning of the precipitation process was studied. The results indicate that regeneration efficiencies between 53%–97% can be obtained varying the main parameters mentioned above, and also both Raman spectroscopy and SEM images reveal the formation of a carbonate phase in the obtained solid. These results confirmed the technical feasibility of this biogas upgrading process through CaCO3 production.
Francisco M. Baena-Moreno; Mónica Rodríguez-Galán; Fernando Vega; T. R. Reina; Luis F. Vilches; Benito Navarrete. Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters. Processes 2018, 6, 205 .
AMA StyleFrancisco M. Baena-Moreno, Mónica Rodríguez-Galán, Fernando Vega, T. R. Reina, Luis F. Vilches, Benito Navarrete. Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters. Processes. 2018; 6 (11):205.
Chicago/Turabian StyleFrancisco M. Baena-Moreno; Mónica Rodríguez-Galán; Fernando Vega; T. R. Reina; Luis F. Vilches; Benito Navarrete. 2018. "Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters." Processes 6, no. 11: 205.
This work describes a novel teaching methodology and its application in a subject framed in the last course of the master’s degree in Chemical Engineering at the University of Seville. The main aim consists of promoting a way to facilitate professional practice in this field to the students. Authors also aim at guiding the transition to the new learning requirements demanded by the European Higher Education Area (EHEA). The novel methodology is based on the development of a detailed design of a pilot plant that can be further evaluated by the students themselves. Students are also allowed to run experiments at the facility and carry out several standard tests to verify the quality of the results of their works. The novelty of this proposal consists of incorporating a real installation available in our department to drive new learning methodologies applied in Chemical Engineering curricula. The methodology is distributed across several tasks: training (self-learning), project execution and supervision, comparison with a real installation and pilot plant experiences. The application of the proposed teaching methodology provided quality didactic material production, high satisfaction of the students with the new learning approach and the fact that they gained practical experience at industrial scale.
Fernando Vega; Benito Navarrete. Professional design of chemical plants based on problem-based learning on a pilot plant. Education for Chemical Engineers 2018, 26, 30 -34.
AMA StyleFernando Vega, Benito Navarrete. Professional design of chemical plants based on problem-based learning on a pilot plant. Education for Chemical Engineers. 2018; 26 ():30-34.
Chicago/Turabian StyleFernando Vega; Benito Navarrete. 2018. "Professional design of chemical plants based on problem-based learning on a pilot plant." Education for Chemical Engineers 26, no. : 30-34.
Fernando Vega; Mercedes Cano; Sara Camino; Luz M. Gallego Fernández; Esmeralda Portillo; Benito Navarrete. Solvents for Carbon Dioxide Capture. Carbon Dioxide Chemistry, Capture and Oil Recovery 2018, 1 .
AMA StyleFernando Vega, Mercedes Cano, Sara Camino, Luz M. Gallego Fernández, Esmeralda Portillo, Benito Navarrete. Solvents for Carbon Dioxide Capture. Carbon Dioxide Chemistry, Capture and Oil Recovery. 2018; ():1.
Chicago/Turabian StyleFernando Vega; Mercedes Cano; Sara Camino; Luz M. Gallego Fernández; Esmeralda Portillo; Benito Navarrete. 2018. "Solvents for Carbon Dioxide Capture." Carbon Dioxide Chemistry, Capture and Oil Recovery , no. : 1.
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 novel AMP/AEP blend, namely POS #1, under partial oxy-combustion conditions. The effects of temperature and flue gas composition were evaluated in terms of solvent loss, degradation rates, NH3 emissions and degradation products. The experiments were set at temperatures up to 70 °C and two levels of O2 concentration – 3%v/v and 6%v/v. The CO2 concentration of the flue gas ranged between 15%v/v and 60%v/v CO2. The novel solvent POS#1 showed high resistance to degrade and resulted in lower degradation rates than MEA in all the operating conditions evaluated in this work. The maximum degradation of AEP and AMP was 24% and 19%, respectively. MEA degraded almost double under the same conditions. Temperature and O2 concentration enhanced the oxidative degradation of POS #1. However, the use of higher CO2 concentration in the flue gas led to lower degradation rates of AEP and AMP and hence oxidative degradation was partially inhibited under partial oxy-combustion conditions. The presence of higher CO2 content in the flue gas decreased the NH3 production and a 70% reduction of its emissions was achieved as the CO2 concentration shifted from 15%v/v to 60%v/v. Other major degradation compounds such as formate and 2,4-lutidine were also decreased. New degradation products were not identified so that the suggested degradation pathways proposed in the literature were not influenced by the presence of higher CO2 concentrations.
F. Vega; M. Cano; Aimaro Sanna; J.M. Infantes; Mercedes Maroto-Valer; B. Navarrete. Oxidative degradation of a novel AMP/AEP blend designed for CO2 capture based on partial oxy-combustion technology. Chemical Engineering Journal 2018, 350, 883 -892.
AMA StyleF. Vega, M. Cano, Aimaro Sanna, J.M. Infantes, Mercedes Maroto-Valer, B. Navarrete. Oxidative degradation of a novel AMP/AEP blend designed for CO2 capture based on partial oxy-combustion technology. Chemical Engineering Journal. 2018; 350 ():883-892.
Chicago/Turabian StyleF. Vega; M. Cano; Aimaro Sanna; J.M. Infantes; Mercedes Maroto-Valer; B. Navarrete. 2018. "Oxidative degradation of a novel AMP/AEP blend designed for CO2 capture based on partial oxy-combustion technology." Chemical Engineering Journal 350, no. : 883-892.
Partial oxy-combustion technology emerges as a potential CO2 capture process that might improve the CO2 separation step using an amine-based chemical absorption process. Its main potentialities are based on the kinetic enhancement of the CO2 absorption stage that can lead to reduce the energy penalty of the overall CO2 capture. In this work, three amine families, namely primary, secondary and tertiary amines were evaluated in order to study the absorption performance in presence of CO2-enriched flue gas. The tests campaign were performed using a semi-batch lab-scale rig. The effects on the kinetic of the CO2 absorption were analysed under variations of the synthetic flue gas composition for above-mentioned solvents. The CO2 absorption was enhanced under higher CO2 concentration for all the solvents tested in terms of both the CO2 absorption rates and the CO2 loading reached at equilibrium. Amines based on the Zwitterion mechanism − primary and secondary amines − increased from 3 to 5.5 times the average CO2 absorption rates in presence of CO2 concentrations ranging between 40 and 60% v/v whereas amines based on base-catalysed hydration mechanism mainly increased the CO2 loading. The CO2 absorption capacity for tertiary amines was doubled under 60% v/v CO2. Based on these results, the contribution of tertiary amines in blends should be increase for partial oxy-combustion applications and hence further reductions might be achieved in terms of energy requirement during the solvent stripping. Finally, high performance of the CO2 absorption process was achieved for partial oxy-combustion operating at 40%v/v CO2 concentration in the flue gas.
F. Vega; M. Cano; S. Camino; B. Navarrete; J.A. Camino. Evaluation of the absorption performance of amine-based solvents for CO 2 capture based on partial oxy-combustion approach. International Journal of Greenhouse Gas Control 2018, 73, 95 -103.
AMA StyleF. Vega, M. Cano, S. Camino, B. Navarrete, J.A. Camino. Evaluation of the absorption performance of amine-based solvents for CO 2 capture based on partial oxy-combustion approach. International Journal of Greenhouse Gas Control. 2018; 73 ():95-103.
Chicago/Turabian StyleF. Vega; M. Cano; S. Camino; B. Navarrete; J.A. Camino. 2018. "Evaluation of the absorption performance of amine-based solvents for CO 2 capture based on partial oxy-combustion approach." International Journal of Greenhouse Gas Control 73, no. : 95-103.
Carbon dioxide capture and storage (CCS) technologies have been proposed as a promising alternative to reduce CO2 emissions from fossil fuel power plants with post‐combustion capture. Absorption by aqueous amine‐solutions is considered the most mature and industrially developed technology for post‐combustion capture. One of the most significant issues hindering a large deployment of this technology is potential amine degradation. Amines degrade in presence of O2, CO2, NOx, SO2, and heat resulting in solvent loss, equipment corrosion and generation of volatile degradation compounds. Two types of degradation have been identified in the literature, namely oxidative and thermal degradation. A review of the amine‐based solvents, its main degradation products, the apparatus and analytical methods most widely used, as well as the mechanism proposed and kinetic studies are presented and discussed here. Moreover, amines emissions from CO2 capture units can react in the atmosphere via photo‐oxidation and also via NOX reactions to give nitrosamines and nitramines, which are potentially harmful to the human health and the environment. A discussion of the recent works on atmospheric degradation of amine solvents is also included in this review.© 2014 Society of Chemical Industry and John Wiley & Sons, Ltd
Fernando Vega; Aimaro Sanna; Benito Navarrete; Mercedes Maroto-Valer; Vicente J. Cortés. Degradation of amine-based solvents in CO2capture process by chemical absorption. Greenhouse Gases: Science and Technology 2014, 4, 707 -733.
AMA StyleFernando Vega, Aimaro Sanna, Benito Navarrete, Mercedes Maroto-Valer, Vicente J. Cortés. Degradation of amine-based solvents in CO2capture process by chemical absorption. Greenhouse Gases: Science and Technology. 2014; 4 (6):707-733.
Chicago/Turabian StyleFernando Vega; Aimaro Sanna; Benito Navarrete; Mercedes Maroto-Valer; Vicente J. Cortés. 2014. "Degradation of amine-based solvents in CO2capture process by chemical absorption." Greenhouse Gases: Science and Technology 4, no. 6: 707-733.
Fernando Vega; Esmeralda Portillo; Mercedes Cano; Benito Navarrete. EXPERIENCIAS DE APRENDIZAJE EN INGENIERÍA QUÍMICA: DISEÑO, MONTAJE Y PUESTA EN MARCHA DE UNA UNIDAD DE DESTILACIÓN A ESCALA LABORATORIO MEDIANTE EL APRENDIZAJE BASADO EN PROBLEMAS. Formación universitaria 2014, 7, 13 -22.
AMA StyleFernando Vega, Esmeralda Portillo, Mercedes Cano, Benito Navarrete. EXPERIENCIAS DE APRENDIZAJE EN INGENIERÍA QUÍMICA: DISEÑO, MONTAJE Y PUESTA EN MARCHA DE UNA UNIDAD DE DESTILACIÓN A ESCALA LABORATORIO MEDIANTE EL APRENDIZAJE BASADO EN PROBLEMAS. Formación universitaria. 2014; 7 (1):13-22.
Chicago/Turabian StyleFernando Vega; Esmeralda Portillo; Mercedes Cano; Benito Navarrete. 2014. "EXPERIENCIAS DE APRENDIZAJE EN INGENIERÍA QUÍMICA: DISEÑO, MONTAJE Y PUESTA EN MARCHA DE UNA UNIDAD DE DESTILACIÓN A ESCALA LABORATORIO MEDIANTE EL APRENDIZAJE BASADO EN PROBLEMAS." Formación universitaria 7, no. 1: 13-22.