Download or read book Are Water Lean Solvents a Game Changer in Post Combustion Co2 Capture written by Niall Mac Dowell and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fossil fuel fired power generation will likely remain part of the energy mix in the mid-term and it is widely regarded that large scale Carbon Capture and Sequestration (CCS†) must be deployed in order to meet COP21's‡ targets. A vast research effort focused on increasing a solvent's equilibrium capacity to absorb CO2 or on reducing the inherent energy requirement of regenerating the solvent, and led to thousands of new materials being proposed in the last decades. Chemical solvent based post-combustion capture is the most mature technology, which could be deployed near-term and at large scale. Amine scrubbing is the predominant technology and usually utilises aqueous blends of primary, secondary, tertiary, sterically hindered or cyclic amines. Common examples are monoethanolamine (MEA), diethanolamine (DEA), methyl diethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP) and piperazine. State-of-the-art proprietary amine solvents have shown workable capacities up to 5000 tonnes CO2 per day at commercial-scale plants at Boundary Dam and Petra Nova. Water-lean systems include e.g., conventional ionic liquids (ILs), amines in ILs, phase changing solvents, and CO2-binding organic liquids (CO2BOLs), which replace water with alcohol and nucleophilic amines with a non-nucleophilic base. It is common heuristic that increased viscosity is a significant disadvantage, and water-lean solvents are significantly more viscous compared to conventional alkanolamine solvents. Typical viscosities range from 10mPa∙s up to 3500mPa∙s at their respective operating window. Those values significantly exceed the order of 30wt-% aqueous MEA (2.5mPa∙s). Recent results indicate reductions in CO2BOL's intrinsic viscosity to smaller than 250mPa∙s [5,6]. Water-lean solvents show superior mass transfer and kinetics compared to amines, which opens highly non-linear multi-dimensional trade-offs between thermodynamic- and transport-properties (e.g., enhanced kinetics and increased viscosity). Previous results indicate that viscosity dominates the installed costs and even limits the usability of conventional ILs as post-combustion capture solvents.In this study, we present a techno-economic assessment of typical water-lean solvents and evaluate a potential cost benefit over typical aqueous amine solutions for coal-fired power plant flue gas conditions, e.g., yCO2=12%. The aim is to identify if the enhanced kinetics outweigh the effect of the increased viscosity on a cost per ton basis. The economic calculation (CAPEX, OPEX) is physically based on properties such as e.g., column height, material or flowrates and is condensed into the total annualised costs (TAC, total cost of ownership) $/tonCO2. This study quantifies the trade-off between viscosity and kinetics, in order to benchmark an acceptable increase in viscosity with enhanced kinetics for water-lean solvents. A two-dimensional sensitivity analysis and the impact of a solvent's viscosity and kinetics (expressed as weight fraction of an active compound, which has the same type of kinetics as MEA) are shown in Figure 1§. The steep incline in TAC between 10mPa∙s and 20mPa∙s is mainly triggered by a transition from turbulent to laminar flow in the heat exchangers [2]. The TAC decreases with increasing weight fraction, which indicates that the enhanced kinetics (e.g., higher absolute rate of reaction) outweigh effects by increased viscosity, i.e., the viscosity does not limit the equipment through e.g., unrealistic absorber's height [3], because less solvent is needed to absorb the same amount of CO2.

Download or read book Attempting to Break the 2 GJ tonne CO2 Barrier Development of an Advanced Water Lean Capture Solvent From Molecules to Detailed Process Design written by Yuan Jiang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solvent-based post-combustion CO2 capture is an energy-intensive process primarily driven by the energy required to regenerate the CO2 capture solvent. Researchers are currently focused on developing drop-in solvent replacements for commercial amine solvents with lower regeneration energies. One approach to reducing the regeneration energy of a solvent is to reduce its water content, thereby reducing unnecessary condensing and consequent boiling in the process. There are a number of water-lean solvent formulations currently under development that allow for water contents below 10% by weight, versus more than 60% for commercial aqueous amines. One solvent class, CO2-Binding Organic Liquids (CO2BOLs), shows promise to reduce the parasitic load to a coal-fired power plant but has been impeded by high viscosities at high CO2 loadings. In this paper, we perform a preliminary modeling study of a new low-viscosity CO2BOL solvent and assess the energetics of different process stripper configurations. By tailoring the process configuration with the unique aspects of the solvent reboiler duties below 2 GJ/tonne CO2 could be achievable. Further, this study suggests that there is no one-size-fits-all process optimum configuration for solvents, and therefore optimal configurations will be solvent specific.

Download or read book Recent progress and new developments in post combustion carbon capture technology with reactive solvents written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Health and Safety Assessment of Phase change Solvents for Post Combustion CO2 Capture written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantification of Amine Loss in the Post Combustion CO2 Capture Process written by Amrutha Raghu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Water on the CO2 Capture Mechanism Capacity and Thermodynamic Properties of Aprotic Heterocyclic Anion Ionic Liquids written by Gabriela María Avelar Bonilla and published by . This book was released on 2020 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ionic liquids (ILs) are promising alternative solvents for carbon capture applications, including aprotic heterocyclic anion (AHA) ILs. These ILs were specifically designed for this application. They bind with CO2 in a 1 to 1 mole ratio, with a modest enthalpy of reaction. Water is an important impurity present in the flue gas, and understanding its effect is critical in designing the separation process. Water is of particular importance for ILs because it can change their physical properties and the chemistry of their reaction with CO2. In this dissertation, a comprehensive study regarding the reaction mechanism, CO2 solubility and equilibrium values of the IL-CO2-H2O system is presented. The changes in the reaction mechanism of AHA ILs with CO2 in the presence of water were investigated using NMR spectroscopy methods. It was established that in addition to the anion reacting with CO2 to form carbamate, the anion reacts with water and is reprotonated, leaving hydroxide to react with CO2 to form bicarbonate. The amount of reprotonated anion, carbamate and bicarbonate formed depends strongly on the nature of the anion and substituent groups on it. Additionally, the enthalpy, entropy and equilibrium constants for the reaction between the IL and CO2 in the presence of water were estimated. This was done by fitting experimental data of the CO2 absorption isotherms of AHA ILs and water mixtures to a Langmuir model. The results revealed that the enthalpy of the reaction leading to bicarbonate formation is larger in magnitude than the value obtained for the reaction of the neat IL with CO2 (only carbamate formation). An increase in the overall enthalpy of reaction could increase the amount of energy needed for the IL regeneration process and, subsequently, the cost of carbon capture. Nevertheless, it was concluded that water present in the post-combustion flue gas will not hinder the use of AHA ILs, in CO2 capture applications

Download or read book Non linear System Identification and Control of Solvent based Post combustion CO2 Capture Process written by Toluleke E. Akinola and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparisons of Amine Solvents for Post combustion CO sub 2 Capture written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Amine solvents are of great interest for post-combustion CO2 capture applications. Although the development of new solvents is predominantly conducted at the laboratory scale, the ability to assess the performance of newly developed solvents at the process scale is crucial to identifying the best solvents for CO2 capture. In this work we present a methodology to evaluate and objectively compare the process performance of different solvents. We use Aspen Plus, with the electrolyte-NRTL thermodynamic model for the solvent CO2 interactions, coupled with a multi-objective genetic algorithm optimization to determine the best process design and operating conditions for each solvent. This ensures that the processes utilized for the comparison are those which are best suited for the specific solvent. We evaluate and compare the process performance of monoethanolamine (MEA), diethanolamine (DEA), and 2-amino-2-methyl-1-propanol (AMP) in a 90% CO2 capture process from a 550 MW coal fired power plant. From our analysis the best process specifications are amine specific and with those specific, optimized specifications DEA has the potential to be a better performing solvent than MEA, with a lower energy penalty and lower capital cost investment.

Download or read book Aerosol based Emission Solvent Degradation and Corrosion in Post Combustion CO2 Capture written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparison Study of Carbon Dioxide Absorption Performance in MEA and Blended Amine Solvents for Post combustion Process written by Tianci Li and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, industrialization causes excess carbon dioxide emissions. Carbon dioxide (CO2) is one of the main greenhouse gases due to human activities. However, high costs remain the main challenge to control the carbon dioxide from industry. Due to this issue, the carbon capture technique is developing slowly in most developing countries. This work is going to compare and explore a more effective blended amine solvent comparing with current common single amine solvents for the CO2 chemical absorption process for improving absorption performance and reducing the investment and operating costs. In this research, the CO2 absorption performance of aqueous MDEA/PZ blends and aqueous MEA/MDEA/PZ blends were comprehensively investigated experimentally and compared with the benchmark aqueous solution 5M MEA in terms of CO2 absorption rate, CO2 absorption efficiency, mass transfer efficiency and CO2 equilibrium solubility using a bench-scale packed column and a CO2 solubility apparatus. The simulation results have been validated with the experimental date from this research work other published experimental data. Different scenarios were assessed to evaluate the absorption performance using experiment method and simulation method. The overall mass transfer coefficient of the aqueous solvents and the CO2 absorption rate under ambient pressure is ranked as 2M MDEA+3M PZ>1M MEA+2M MDEA+2M PZ > 3M MDEA+2M PZ > 5M MEA. The measurements of the CO2 solubility experiments were performed over the CO2 partial pressure range of 8-51 kPa at 40oC. A new set of experimental data for the CO2 solubility in an aqueous solution of 1M MEA+2M MDEA+2M PZ blended solvent and aqueous MDEA/PZ blends were investigated and compared with the prediction results from the Artificial Neural Network model and the simulation results using MATLAB and ProMax, respectively. The prediction results from ANN model confirmed that the CO2 equilibrium solubility of 2M MDEA+3M PZ was higher than other blend amine solvents and the conventional amine (5M MEA). Also, the comparison results indicate that the neural network modeling provides more accurate prediction results of CO2 solubility test than the simulation results when compared with new experimental results in this research.

Download or read book Development of On Line Analytical Technique for Determination of Composition of CO2 Loaded Formulated Amine Solvents Based on the Liquid Thermo Physical Properties for a Post Combustion CO2 Capture Process written by Fatemah Pouryousefi Dargah and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction To Carbon Capture And Sequestration written by Berend Smit and published by World Scientific. This book was released on 2014-01-10 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the book is to provide an understanding of the current science underpinning Carbon Capture and Sequestration (CCS) and to provide students and interested researchers with sufficient background on the basics of Chemical Engineering, Material Science, and Geology that they can understand the current state of the art of the research in the field of CCS. In addition, the book provides a comprehensive discussion of the impact of CCS on the energy landscape, society, and climate as these topics govern the success of the science being done in this field.The book is aimed at undergraduate students, graduate students, scientists, and professionals who would like to gain a broad multidisciplinary view of the research that is being carried out to solve one of greatest challenges of our generation.

Download or read book Carbon Capture Utilization and Storage Game Changers in Asia 2020 Compendium of Technologies and Enablers written by Asian Development Bank and published by Asian Development Bank. This book was released on 2021-03 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compendium showcases new and innovative low carbon technologies that have potential to be deployed in Asia and the Pacific. It features 10 technologies for capturing, utilizing, or storing carbon dioxide. The key aspects of these technologies are discussed together with their advantages and status of development and commercialization. The compendium aims to contribute to low carbon development in the region by promoting further research, innovation, and investment in emerging technologies.

Download or read book CO2 Sequestration and Valorization written by Claudia R. V. Morgado and published by BoD – Books on Demand. This book was released on 2014-03-12 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reconciliation of economic development, social justice and reduction of greenhouse gas emissions is one of the biggest political challenges of the moment. Strategies for mitigating CO2 emissions on a large scale using sequestration, storage and carbon technologies are priorities on the agendas of research centres and governments. Research on carbon sequestration is the path to solving major sustainability problems of this century a complex issue that requires a scientific approach and multidisciplinary and interdisciplinary technology, plus a collaborative policy among nations. Thus, this challenge makes this book an important source of information for researchers, policymakers and anyone with an inquiring mind on this subject.

Download or read book Carbon Based Material for Environmental Protection and Remediation written by Mattia Bartoli and published by BoD – Books on Demand. This book was released on 2020-08-19 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-Based Material for Environmental Protection and Remediation presents an overview of carbon-based technologies and processes, and examines their usefulness and efficiency for environmental preservation and remediation. Chapters cover topics ranging from pollutants removal to new processes in materials science. Written for interested readers with strong scientific and technological backgrounds, this book will appeal to scientific advisors at private companies, academics, and graduate students.

Download or read book CO2 Hydrogenation Catalysis written by Yuichiro Himeda and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the effective catalysts and latest advances in CO2 conversion in chemicals and fuels Carbon dioxide hydrogenation is one of the most promising and economic techniques to utilize CO2 emissions to produce value-added chemicals. With contributions from an international team of experts on the topic, CO2 Hydrogenation Catalysis offers a comprehensive review of the most recent developments in the catalytic hydrogenation of carbon dioxide to formic acid/formate, methanol, methane, and C2+ products. The book explores the electroreduction of carbon dioxide and contains an overview on hydrogen production from formic acid and methanol. With a practical review of the advances and challenges in future CO2 hydrogenation research, the book provides an important guide for researchers in academia and industry working in the field of catalysis, organometallic chemistry, green and sustainable chemistry, as well as energy conversion and storage. This important book: Offers a unique review of effective catalysts and the latest advances in CO2 conversion Explores how to utilize CO2 emissions to produce value-added chemicals and fuels such as methanol, olefins, gasoline, aromatics Includes the latest research in homogeneous and heterogeneous catalysis as well as electrocatalysis Highlights advances and challenges for future investigation Written for chemists, catalytic chemists, electrochemists, chemists in industry, and chemical engineers, CO2 Hydrogenation Catalysis offers a comprehensive resource to understanding how CO2 emissions can create value-added chemicals.

Download or read book Reactor and Process Design in Sustainable Energy Technology written by Fan Shi and published by Elsevier. This book was released on 2014-07-28 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactor Process Design in Sustainable Energy Technology compiles and explains current developments in reactor and process design in sustainable energy technologies, including optimization and scale-up methodologies and numerical methods. Sustainable energy technologies that require more efficient means of converting and utilizing energy can help provide for burgeoning global energy demand while reducing anthropogenic carbon dioxide emissions associated with energy production. The book, contributed by an international team of academic and industry experts in the field, brings numerous reactor design cases to readers based on their valuable experience from lab R&D scale to industry levels. It is the first to emphasize reactor engineering in sustainable energy technology discussing design. It provides comprehensive tools and information to help engineers and energy professionals learn, design, and specify chemical reactors and processes confidently. - Emphasis on reactor engineering in sustainable energy technology - Up-to-date overview of the latest reaction engineering techniques in sustainable energy topics - Expert accounts of reactor types, processing, and optimization - Figures and tables designed to comprehensively present concepts and proceduresHundreds of citations drawing on many most recent and previously published works on the subject