Download or read book Systematic Approach to Degradation Studies in Catalyst Based Amine CO2 Capture Process written by Dzifa Nugloze and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of climate change have attracted concern globally which has led to an increase in research focused on diverse plans and technologies for mitigation. The use of solid catalyst in an amine based post-combustion CO2 capture (PCCC) has become a very attractive option as developments are actively ongoing to address some of the challenges that the conventional capture system faces. This research work evaluated the role that a new super acid, proprietary desorber catalyst (PDC) catalyst has on the amine degradation rate using a formulated optimum 4M DMAE/AMP equimolar blend in a full cycle bench scale CO2 capture pilot plant system. Three solvent blends, 4M DMAE/AMP, 2M PEI/AMP (0.3/1.7) and 2M PEI/HMDA (0.3/1.7) were screened in a preliminary study and compared with 4M BEA/AMP. 4M DMAE/AMP emerged as the optimum solvent amongst all the three formulated ones with high points of improvement in the desorption performance parameters. DMAE/AMP is a good replacement for BEA/AMP as it addresses the problem of potential nitrosamine and nitramine formation. Two basic catalysts, proprietary absorber catalyst (PAC), and activated carbon spheres (ACS) and one acid catalyst, PDC were also synthesized, characterized, screened, and compared with the existing basic catalyst, KMgO/CNT's and acid catalyst, Ce(SO4)2/ZrO2 respectively to evaluate their performances and how suitable they are for use in the PCC process compared to the existing ones. The introduction of ACS in the absorption system increased the rate at which the amine solvent absorbed CO2 by approximately 33 %. In the case of PAC, an absorption rate enhancement of approximately 29 % was obtained. PDC enhanced the CO2 desorption rate by approximately 25 % higher than the non-catalytic desorption using 4M DMAE/AMP. Degradation studies were finally conducted to examine the role that the solid acid catalyst, PDC plays in the stability of the selected amine blend system in a bench-scale pilot plant set-up. PDC inhibited the oxidative degradation rate of both DMAE and AMP by 25 % and 59 % respectively. This means 2M of DMAE would be depleted in 62 days in the presence of PDC compared to 46 days without PDC in an oxidative environment. Similarly, it would take 139 days for 2M of AMP to be depleted compared to 57 days without the presence of PDC. This translates into huge savings in operational cost if PDC is used as a catalyst to both enhance the desorption and limit degradation. The findings of this work would open up new discussions on how solid basic or acid catalysts can be beneficial in addressing one of the major drawbacks to the PCC technology, i.e. degradation.

Download or read book Amine and Catalyst Stability Studies in the Catalyst Aided CO2 Capture Process written by Benjamin Amoako and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of sol id base and sol id acid catalysts to improve CO2 capture has been one of the most notable technological advancements in amine-based post -combust ion capture. Despite the inherent benefits of the catalysts, the amine solvent is st i l l prone to degradation, which is a major operational problem associated with the capture process. The nature of solvent degradation in catalyst -aided CO2 capture has not been reported before, and thus, the effect of catalyst on solvent or vice versa is unknown. This work evaluates the effect of catalyst on solvent degradation and vice versa using BEA-AMP bi -blend solvent and recent absorber and desorber catalysts , which have produced remarkable CO2 capture performance. The absorber and desorber catalysts are CNTs/K-MgO and Ce(SO4 )2 /ZrO2 , respectively. A preliminary stability study was conducted under typical absorption conditions in a semi -batch mode. The results revealed that CNTs/K-MgO increases solvent degradation. Degradation was direct ly proportional to temperature in the region of 313-333K. It was also found that the catalyst reduces the activat ion energy of degradation by 11%. In addition, NH3 emissions from the degradation cell s increased wi th temperature . However, emissions were lower with the addition of catalyst due to the presence of colloidal silica used in binding the catalyst . The absorber catalyst was further investigated using normal conditions of the absorber during capture . The results showed 41 and 30% increments in degradation rates of BEA and AMP, respectively, with the catalyst . The effect of Ce(SO4 )2 /ZrO2 on the solvent was investigated in a bench-scale CO2 capture plant . The catalyst increased degradation by 23% for BEA and 20% for AMP. The effect of catalytic degradation on performance was evaluated by comparing the CO2 cyclic capacities of the catalytic and non-catalytic runs on the f irst and last days of the experiment . The results showed that the cyclic capacity of the catalytic run was 25% higher than the non-catalytic run on the last day, which is 18% lower than that obtained on the first day. Again, the decline in cyclic capacity of the catalytic system was faster by 10% due to the additional effect of catalyst on speeding amine degradation. The Ce(SO4 )2 /ZrO2 -aided degraded solvent was further tested with CNTs/K-MgO in the semi -batch mode. Further degradation was observed, showing that the combined ef fect of both catalysts would be higher in a typical capture plant . The fresh and spent catalysts from the test runs were characterized and compared to assess the stability of the catalysts. From the results, there were changes to the physical and chemical properties of the catalysts, which are known to be essential for CO2 capture. Increased degradation translates to a higher solvent replacement cost . Therefore, the findings of this work would represent the first step in developing better catalysts that would have a significantly reduced effect on the stability of the solvent to lower the cost of capture.

Download or read book First principles Studies on Degradation of Aqueous Amines for Carbon Dioxide Capture written by Bohak Yoon and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical absorption with aqueous amine-based solvents has been the most promising incumbent technology for post-combustion CO2 capture from flue gas. However, its extensive operation is severely limited by the large cost attributed to the enormous energy requirement for solvent regeneration and degradation issues leading to makeup of amine solvent loss. First-principles atomistic modeling can provide key insights into elucidating chemical phenomena pertinent to degradation behavior in CO2-loaded aqueous amine solution, which is often extremely challenging to be experimentally characterized. In this dissertation, our first-principles works on illuminating the molecular mechanisms governing solvent degradation of aqueous amine during CO2 capture are presented. Using density functional theory based ab initio molecular dynamics with enhanced sampling techniques, we identify elementary reactions governing CO2 capture and degradation. Molecular mechanisms of thermal and oxidative degradation of aqueous amine solvents are discussed in perspective of both thermodynamics and kinetics. We systematically investigate on the factors prevailing key reaction rates, such as amine functional groups, the steric hindrances, classes of amines (primary and secondary), concentration of amines, solvation nature, and temperature conditions. These factors may largely affect relative strengths of both inter- and intramolecular hydrogen bond interactions in CO2-loaded aqueous amine solution. Our theoretical studies further illustrate the importance of an atomistic-level description of solvation structure and dynamics that may primarily govern CO2 reaction with aqueous amine solvents and associated degradation mechanisms. This dissertation highlights the key role of first-principles computational modelling in accurately describing mechanistic understandings on CO2 capture by aqueous amine solvents and associated degradation processes. The enhanced atomisticlevel descriptions will provide more complete explanations for experimental characterizations and valuable suggestions on how to optimize existing solvents and design more cost-efficient solvents for carbon capture processes

Download or read book Theoretical Studies of Aqueous Amine Solvents for Carbon Dioxide Capture written by Haley Maren Stowe and published by . This book was released on 2018 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aqueous amine-based chemical scrubbing has been considered the most promising near-term solution for CO2 capture from flue gas, yet the underlying reaction mechanisms are still not fully understood. Moreover, its widespread implementation is hindered by the high cost associated with the parasitic energy consumption during solvent regeneration, along with degradation and corrosion problems. First-principles-based atomistic modeling can play a significant role in elucidating the complex physicochemical phenomena underlying CO2 reaction-diffusion behavior in aqueous amine-based solvent, especially when direct experimental characterization at the atomic level may be difficult. An improved fundamental understanding of these reaction mechanisms and intermolecular interactions can be used to provide explanations for experimental observations and fundamental data, and improve kinetic and thermodynamic models for process optimization. Here, our recent theoretical works on the molecular mechanisms underlying CO2 capture and solvent regeneration in aqueous amines are presented. Through systematic comparative analyses of primary, tertiary, and sterically hindered amines, and diamines, we provide significant insights into how the mechanisms and rates of competing CO2 absorption routes can be influenced by the solvent structure, the relative strengths of intra- and intermolecular hydrogen bond interactions, and steric constraints. We also use a theoretical approach to examine the mechanisms occurring during thermal degradation, as well as the process underlying leaching of metal ions into solution due to corrosion and subsequent oxidative degradation, which remain unclear. These studies further demonstrate the importance of a detailed atomic-level description of the solution structure and dynamics to describe the reactions and in predicting the thermodynamic and kinetic properties in CO2-loaded aqueous amines. Moreover, an accurate description of solvent composition near the gas interface and near the iron surface is critical in predicting the CO2 capture and corrosion processes, respectively. This dissertation highlights the increasingly important role of first-principles-based computer simulations in the detailed mechanistic study of CO2 capture by amine-based solvents, including solvent degradation and corrosion processes. The improved understanding gained from computational studies combined with experiment validations will greatly aid in the design and development of new solvents and inhibitors in efforts to improve the efficiency of commercial-scale applications

Download or read book Heterogeneous Photocatalytic Treatment of Wastewater from Amine based Carbon Capture Plants written by Kishore Kumar Reddy Bommavaram and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amine-based Carbon Capture (ABCC) is the advanced, cost-effective technology used to control climate change by capturing CO! emissions. Although it has been demonstrated commercially, amine degradation poses a significant threat to humans and aquatic life. Amine degradation produces a wide variety of complex products. Some of them are carcinogenic and mutagenic such as nitrosamines and some organic acids that have demonstrated acute toxicity for laboratory animals. In order to mitigate the adverse impact of these compounds on human health and aquatic life, heterogenous photocatalysis, an advanced oxidation process, which can degrade a wide variety of chemical species with the potent reactive hydroxyl radicals, was considered for the degradation of these compounds. The photocatalytic degradation of N-Nitrosodiethylamine (NDEA), acetic acid and formic acid were tested using various metal impregnated TiO2 such as Fe, Co, Ni and Cu. The operational parameters for the photocatalytic degradation process were chosen as solution pH, catalyst dose and metal impregnation percentage (imp %). Various techniques were used for the catalyst characterization such as Thermogravimetric Analysis (TGA), X-Ray Fluorescence Spectrometer (XRF), Brunauer-Emmett-Teller (BET), UV-visible spectrophotometer (UV-Vis), Scanning electron microscope (SEM), and X-ray diffraction (XRD). Designing the experiments, optimization, and impact of the parameters on the photocatalytic degradation of NDEA, acetic acid, and formic acid were analyzed using a Facecentered- central composite design (FC-CCD) in Response Surface Methodology (RSM) by Statease Design expert software. Various regression models were tested using ANOVA to fit between the responses (NDEA, acetic acid, and formic acid) of FC-CCD experimental runs and the independent variables. The quadratic model was analyzed as the best fit for all the responses and the independent variables by eliminating insignificant factors. This model was best demonstrated for all the catalysts such as Fe, Co, Ni, and Cu impregnated TiO2. The interaction between the three variables and the responses were studied and presented in three-dimensional graphical representation. pH was found as an important factor for all three responses. The optimum conditions for the degradation of NDEA, acetic acid and formic acid using Fe-TiO2 catalyst were found as 3.65, 1.5 g/l, and 4.46. Whereas for the Co-TiO2 catalyst the optimum conditions were pH 3.77, catalyst dose of 0.95 g/l, and a metal impregnation percentage of 5. For the Ni-TiO2 the optimum conditions were pH-5.89, dose-0.5 g/l, and imp % of 3.18. A pH of 4.71, dose of 1.5 g/l and imp % of 4.66 were found as optimum conditions for Cu-TiO2. The optimum conditions of the parameters for the photocatalytic degradation of NDEA, acetic acid, and formic acid were determined using RSM and the average degradation efficiency of all the compounds reached 93.1% for Fe-TiO2, 92.08% for Co-TiO2. 89.09% for Ni-TiO2, 88.81% for Cu-TiO2, and 86.3% for TiO2 at the optimum conditions.

Download or read book Absorption Based Post Combustion Capture of Carbon Dioxide written by Paul Feron and published by Woodhead Publishing. This book was released on 2016-05-27 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Absorption-Based Post-Combustion Capture of Carbon Dioxide provides a comprehensive and authoritative review of the use of absorbents for post-combustion capture of carbon dioxide. As fossil fuel-based power generation technologies are likely to remain key in the future, at least in the short- and medium-term, carbon capture and storage will be a critical greenhouse gas reduction technique. Post-combustion capture involves the removal of carbon dioxide from flue gases after fuel combustion, meaning that carbon dioxide can then be compressed and cooled to form a safely transportable liquid that can be stored underground. Provides researchers in academia and industry with an authoritative overview of the amine-based methods for carbon dioxide capture from flue gases and related processes Editors and contributors are well known experts in the field Presents the first book on this specific topic

Download or read book Heterogeneous Photocatalytic Degradation of N Nitrosodiethylamine in Wash Water Unit of Carbon Capture Plants Using Tungsten Trioxide Based Catalysts written by Obed Yeboah Boakye and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Post combustion carbon capture, a promising technology for capturing the superabundant CO2 produced by various industries has received much research and industrial attention. The use of amines for this capture process comes with its own disadvantage in that it degrades into other products some of which are harmful to the ecosystem upon its release into the environment. Chief of these degradation products are the mutagenic and carcinogenic nitrosamines which have received much research attention in both carbon capture processes and wastewater treatment plant processes. Several treatment methods such as biological methods, activated carbon, UV in conjunction with ozone or reverse osmosis and other catalytic destruction methods have be employed so far in treatment wastewater comprising of nitrosamines. However, in this study, an advanced oxidation process (AOP) named heterogeneous photocatalysis is used as a means of treating N-Nitrosodiethylamine (NDEA) wastewater stream using tungsten trioxide based catalysts. Tungsten trioxide (WO3) is synthesized using Thermal Treatment Method (TTM) and Hard Template Replication Method (HTRM) to help investigate the effect of morphological and structural property changes on the NDEA wastewater degradation process. WO3 was also impregnated with other metals such Lanthanum (La), Iron (Fe), Chromium (Cr) and Silver (Ag) to help improve its light absorption ability for the photocatalytic reaction. These synthesized catalysts were characterized using UV-Vis spectroscopic technique to obtain their light harnessing ability as well as their band gap energies. The surface area and pore structure of the pristine and doped catalysts were also investigated using the Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) technique. The crystallinity of the catalysts and their crystallite sizes were determined by employing the X-ray Diffraction (XRD) technique. The surface morphology and catalyst composition were also investigated by employing the use of Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy (SEM-EDS). Photocatalytic NDEA degradation using the synthesized WO3 based catalysts was investigated as a function of three input factors viz. catalyst loading (0.5-5%), solution pH (5-9) and catalyst concentration (0.5-1 g/L) by using Face-Centred Central Composite Design (FCCCD) adapted from response surface methodology (RSM). Using NDEA degradation efficiency as response, a 17-run experiment matrix was generated by the chosen design to investigate the interaction effects of the three above-mentioned input variables. From the results, a compact quadratic model showing high significance (p 0.05) was developed by means of analysis of variance (ANOVA), It predicted the experimental results with good accuracy as seen from the good coefficients of determination values (R2 0.9). The pH of the solution (5) was found to be the most significant design factor having a positive impact on NDEA degradation as its value decreases. The mean degradation efficiency of NDEA was 86.48% for La/WO3, 84.03% for Cr/WO3, 88.90% for Ag/WO3 and 93.03% for Fe/WO3. Using wastewater effluent volume of 148 m3/day from the Boundary Dam amine processing unit as a basis for economic analysis, a total capital investment of $216,981.69 was estimated. It was projected that an annual operating cost of $513,884.85 will be required to run the photocatalytic waste treatment plant at a treatment cost of $10.59/m3. This study presents a foundation for future research into the scale up and eventual commercialization of this wastewater treatment technique.

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 Post combustion CO2 Capture Technology written by Helei Liu and published by Springer. This book was released on 2018-09-25 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of the latest information on all aspects of the post-combustion carbon capture process. It provides designers and operators of amine solvent-based CO2 capture plants with an in-depth understanding of the most up-to-date fundamental chemistry and physics of the CO2 absorption technologies using amine-based reactive solvents. Topics covered include the physical properties, chemical analysis, reaction kinetics, CO2 solubility, and innovative configurations of absorption and stripping columns as well as information on technology applications. This book also examines the post-build operational issues of corrosion prevention and control, solvent management, solvent stability, solvent recycling and reclaiming, intelligent monitoring and plant control including process automation. In addition, the authors discuss the recent insights into the theoretical basis of plant operation in terms of thermodynamics, transport phenomena, chemical reaction kinetics/engineering, interfacial phenomena, and materials. The insights provided help engineers, scientists, and decision makers working in academia, industry and government gain a better understanding of post-combustion carbon capture technologies.

Download or read book Process Intensification written by David Reay and published by Butterworth-Heinemann. This book was released on 2013-06-05 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Process Intensification: Engineering for Efficiency, Sustainability and Flexibility is the first book to provide a practical working guide to understanding process intensification (PI) and developing successful PI solutions and applications in chemical process, civil, environmental, energy, pharmaceutical, biological, and biochemical systems. Process intensification is a chemical and process design approach that leads to substantially smaller, cleaner, safer, and more energy efficient process technology. It improves process flexibility, product quality, speed to market and inherent safety, with a reduced environmental footprint. This book represents a valuable resource for engineers working with leading-edge process technologies, and those involved research and development of chemical, process, environmental, pharmaceutical, and bioscience systems. No other reference covers both the technology and application of PI, addressing fundamentals, industry applications, and including a development and implementation guide Covers hot and high growth topics, including emission prevention, sustainable design, and pinch analysis World-class authors: Colin Ramshaw pioneered PI at ICI and is widely credited as the father of the technology

Download or read book Amine Oxidation in Carbon Dioxide Capture by Aqueous Scrubbing written by Alexander Karl Voice and published by . This book was released on 2013 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amine degradation in aqueous amine scrubbing systems for capturing CO2 from coal fired power plants is a major problem. Oxygen in the flue gas is the major cause of solvent deterioration, which increases the cost of CO2 capture due to reduced capacity, reduced rates, increased corrosion, solvent makeup, foaming, and reclaiming. Degradation also produces environmentally hazardous materials: ammonia, amides, aldehydes, nitramines, and nitrosamines. Thus it is important to understand and mitigate amine oxidation in industrial CO2 capture systems. A series of lab-scale experiments was conducted to better understand the causes of and solutions to amine oxidation. This work included determination of rates, products, catalysts, and inhibitors for various amines at various conditions. Special attention was paid to understanding monoethanolamine (MEA) oxidation, whereas oxidation of piperazine (PZ) and other amines was less thorough. The most important scientific contribution of this work has been to show that amine oxidation in real CO2 capture systems is much more complex than previously believed, and cannot be explained by mass transfer or reaction kinetics in the absorber by itself, or by dissolved oxygen kinetics in the cross exchanger. An accurate representation of MEA oxidation in real systems must take into account catalysts present (especially Mn and Fe), enhanced oxygen mass transfer in the absorber as a function of various process conditions, and possibly oxygen carriers other than dissolved oxygen in the cross exchanger and stripper. Strategies for mitigating oxidative degradation at low temperature, proposed in this and previous work are less effective or ineffective with high temperature cycling, which is more representative of real systems. In order of effectiveness, these strategies are: selecting an amine resistant to oxidation, reduction of dissolved metals in the system, reduction of the stripper temperature, reduction of the absorber temperature, and addition of a chemical inhibitor to the system. Intercooling in the absorber can reduce amine oxidation and improve energy efficiency, whereas amine oxidation should be considered in choosing the optimal stripper temperature. In real systems, 2-amino-2-methyl-1-propanol (AMP) is expected to be the most resistant to oxidation, followed by PZ and PZ derivatives, then methyldiethanolamine (MDEA), and then MEA. MEA oxidation with high temperature cycling is increased 70% by raising the cycling temperature from 100 to 120 °C, the proposed operational temperature range of the stripper. PZ oxidation is increased 100% by cycling to 150 °C as opposed to 120 °C. Metals are expected to increase oxidation in MEA and PZ with high temperature cycling by 40 - 80%. Inhibitor A is not expected to be effective in real systems with MEA or with PZ. MDEA is also not effective as an inhibitor in MEA, and chelating agents diethylenetriamine penta (acetic acid) (DTPA) and 2,5-dimercapto-1,3,4-thiadiazole (DMcT) are only mildly effective in MEA. Although MEA oxidation in real systems cannot be significantly reduced by any known additives, it can be accurately monitored on a continuous basis by measuring ammonia production from the absorber. Ammonia production was shown to account for two-thirds of nitrogen in degraded MEA at low temperature and with high temperature cycling, suggesting that it is a reliable indicator of MEA oxidation under a variety of process conditions. A proposed system, which minimizes amine oxidation while maintaining excellent rate and thermodynamic properties for CO2 capture would involve use of 4 m AMP + 2 m PZ as a capture solvent with the stripper at 135 °C, intercooling in the absorber, and use of a corrosion inhibitor or continuous metals removal system. Reducing (anaerobic) conditions should be avoided to prevent excessive corrosion from occurring and minimize the amount of dissolved metals. This system is expected to reduce amine oxidation by 90-95% compared with the base case 7 m MEA with the stripper at 120 °C.

Download or read book Electrochemically Enhanced Amine Regeneration Process for Next Generation Carbon Dioxide Capture written by Yen-Wen Tseng and published by . This book was released on 2022 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resulting of fossil fuel usage, CO2 concentration in the atmosphere has increased drastically throughout the past century. This increase in CO2 concentration has led to global warming and more frequent extreme weather events that threaten the habitability of the planet. Therefore, it is essential to decrease the CO2 concentration in the atmosphere to mitigate global warming. Post-combustion capture using amine absorbent is one of the most widely used methods, given its feasibility in retrofitting existing fossil fuel-consuming facilities. However, several challenges, including high energy requirements and low cyclic capacity, limit the commercialization of the post-combustion capture technology. In this work, an electrochemically enhanced amine regeneration process is developed to tackle these challenges. The electrochemically enhanced amine regeneration system utilizes the hydrolysis reaction, generating proton and hydroxide to complete an acid- and base-swing regeneration cycle. The electrochemical amine regeneration cell was constructed by stacking multiple ion exchange membranes, acrylic spacers, and rubber gaskets. Several studies were conducted to test, build and optimize the electrochemical amine regeneration system. Amine absorption and desorption baseline were established in different amine-based absorbents to understand the CO2 absorption and desorption profile. Proton-induced CO2 desorption from the absorbent was studied by HCl addition to the CO2-loaded amines. This study validated that complete CO2 desorption can be achieved under ambient temperature. The regeneration of amine by the combination of acid-swing and base-swing was validated by HCl and NaOH addition. The electrochemical cell was then used to perform the acid swing. Different cell structures, exchange membranes, and ionic solutions usage were tested. The acid swing of amine and complete CO2 desorption can be achieved using a four-compartment cell. The base swing of acidified amine was performed by anion exchange. It is validated that electrochemical acid-swing and anion exchange base-swing can successfully regenerate amine. The reabsorption capacity of regenerated amine is the same regardless of the regeneration method used. The optimization study of the electrochemical amine regeneration system focuses on improving energy efficiency and reducing process complexity. Proton requirements for complete CO2 desorption and CO2 loading capacity of various amine absorbents were characterized. It is found that Piperazine has the lowest proton to CO2 ratio, which will result in less energy requirement for electrochemical amine regeneration. A five-compartment electrochemical cell is designed to replace the need for anion exchange resin for base swing. It is validated that the five-compartment cell can complete acid-swing and base-swing to achieve amine regeneration in a continuous operation mode. This cell design reduces the complexity of the process, increases energy efficiency, and facilitates the system's scale-up. In conclusion, an electrochemical amine regeneration system has been developed. Compared to the state-of-art method, it can achieve>80% cyclic capacity with low energy consumption. With further optimization studies, the energy consumption can be further reduced, and this system can potentially serve as the method for the next generation of CO2 capture.

Download or read book Advanced CO2 Capture Technologies written by Shin-ichi Nakao and published by Springer. This book was released on 2019-05-07 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarises the advanced CO2 capture technologies that can be used to reduce greenhouse gas emissions, especially those from large-scale sources, such as power-generation and steel-making plants. Focusing on the fundamental chemistry and chemical processes, as well as advanced technologies, including absorption and adsorption, it also discusses other aspects of the major CO2 capture methods: membrane separation; the basic chemistry and process for CO2 capture; the development of materials and processes; and practical applications, based on the authors’ R&D experience. This book serves as a valuable reference resource for researchers, teachers and students interested in CO2 problems, providing essential information on how to capture CO2 from various types of gases efficiently. It is also of interest to practitioners and academics, as it discusses the performance of the latest technologies applied in large-scale emission sources.

Download or read book Carbon Capture and Storage written by Mai Bui and published by Royal Society of Chemistry. This book was released on 2019-11-29 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will provide the latest global perspective on the role and value of carbon capture and storage (CCS) in delivering temperature targets and reducing the impact of global warming. As well as providing a comprehensive, up-to-date overview of the major sources of carbon dioxide emission and negative emissions technologies, the book also discusses technical, economic and political issues associated with CCS along with strategies to enable commercialisation.

Download or read book Energy Efficient Solvents for CO2 Capture by Gas Liquid Absorption written by Wojciech M. Budzianowski and published by Springer. This book was released on 2016-12-01 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews and characterises promising single-compound solvents, solvent blends and advanced solvent systems suitable for CO2 capture applications using gas-liquid absorption. Focusing on energy efficient solvents with minimal adverse environmental impact, the contributions included analyse the major technological advantages, as well as research and development challenges of promising solvents and solvent systems in various sustainable CO2 capture applications. It provides a valuable source of information for undergraduate and postgraduate students, as well as for chemical engineers and energy specialists.

Download or read book Gaseous Carbon Waste Streams Utilization written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-02-22 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the quest to mitigate the buildup of greenhouse gases in Earth's atmosphere, researchers and policymakers have increasingly turned their attention to techniques for capturing greenhouse gases such as carbon dioxide and methane, either from the locations where they are emitted or directly from the atmosphere. Once captured, these gases can be stored or put to use. While both carbon storage and carbon utilization have costs, utilization offers the opportunity to recover some of the cost and even generate economic value. While current carbon utilization projects operate at a relatively small scale, some estimates suggest the market for waste carbon-derived products could grow to hundreds of billions of dollars within a few decades, utilizing several thousand teragrams of waste carbon gases per year. Gaseous Carbon Waste Streams Utilization: Status and Research Needs assesses research and development needs relevant to understanding and improving the commercial viability of waste carbon utilization technologies and defines a research agenda to address key challenges. The report is intended to help inform decision making surrounding the development and deployment of waste carbon utilization technologies under a variety of circumstances, whether motivated by a goal to improve processes for making carbon-based products, to generate revenue, or to achieve environmental goals.

Download or read book Process Systems and Materials for CO2 Capture written by Athanasios I. Papadopoulos and published by John Wiley & Sons. This book was released on 2017-03-07 with total page 925 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive volume brings together an extensive collection of systematic computer-aided tools and methods developed in recent years for CO2 capture applications, and presents a structured and organized account of works from internationally acknowledged scientists and engineers, through: Modeling of materials and processes based on chemical and physical principles Design of materials and processes based on systematic optimization methods Utilization of advanced control and integration methods in process and plant-wide operations The tools and methods described are illustrated through case studies on materials such as solvents, adsorbents, and membranes, and on processes such as absorption / desorption, pressure and vacuum swing adsorption, membranes, oxycombustion, solid looping, etc. Process Systems and Materials for CO2 Capture: Modelling, Design, Control and Integration should become the essential introductory resource for researchers and industrial practitioners in the field of CO2 capture technology who wish to explore developments in computer-aided tools and methods. In addition, it aims to introduce CO2 capture technologies to process systems engineers working in the development of general computational tools and methods by highlighting opportunities for new developments to address the needs and challenges in CO2 capture technologies.