Download or read book Performance Studies of Novel Amine Blends in a Catalyst Aided CO2 Capture Process written by Foster Amoateng Appiah and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focused on utilizing the combined effect between solvent development and the application of solid catalysis to enhance the reactive absorption-based CO2 capture process. First, the CO2 removal performance of three formulated amine bi-blends were evaluated using a semi-batch screening setup. The performance of each blend in terms of specific parameters such as linear absorption and desorption rates, CO2 equilibrium loading, cyclic capacity and solvent regeneration heat duty were compared with the activity of the standard 4M BEA/AMP blend. The bi-blends developed included 2M HMDA/PEI (1.85M: 0.15M), 2M AMP/PEI (1.7M: 0.3M) and 4M DMAE/AMP (2M: 2M). The screening results showed that by reason of higher reactivity resulting from increased number of amino groups in HMDA and PEI, better absorption performance was observed for 2M HMDA/PEI and 2M AMP/PEI bi-blends. However, from the absorption parameter and desorption parameter criterion, 4M DMAE/AMP was found to be the optimum bi-blend amongst the three blends. In addition, the effects of solid alkaline and acid catalysts on the CO2 absorption and desorption performance of the selected optimum blend were studied. Also, the different characteristics of the catalysts were investigated and related to the corresponding enhancement activity to identify and establish the activity-characteristics relationship. Employing the acid proprietary desorber catalyst (AD-1) increased the linear desorption rate and cyclic capacity of 4M DMAE/AMP by 21% and 8.1% respectively and reduced the solvent regeneration energy requirement by 17.3%. Between the absorber catalysts, an increase of 33.3% and 29% in absorption rates were measured for ACS and AB-1 respectively. Comparing the activity of ACS to AB-1, it was observed that the activity of catalyst depends on both the chemical properties (strength and number of basic sites) and physical properties (surface area and pore volume). Furthermore, a full cycle operation in a bench-scale CO2 capture unit was carried out to validate the performance of 4M DMAE/AMP and 2M HMDA/PEI bi-blends. The performance was evaluated as a function of time-on-stream. From the cyclic runs, higher CO2 absorption and desorption performance parameters were recorded for 4M DMAE/AMP relative to the 2M HMDA/PEI blend. The time-on-stream analysis revealed a general reduction in capture performance and an increase in heat duty for both bi-blends.

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 Kinetic Studies on Catalyst Aided Absorption and Desorption in a Bench Scale Post Combustion CO2 Capture Pilot Plant Using a Novel Solvent Blend written by Daniel Boafo Afari and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Model Adaptation and Optimization for the Evaluation and Investigation of Novel Amine Blends in a Pilot plant Scale CO2 Capture Process Under Industrial Conditions written by Robert Wilhelm 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 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 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 Climate Change 2014 written by Groupe d'experts intergouvernemental sur l'évolution du climat and published by . This book was released on 2015 with total page 151 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 Advances in Carbon Capture written by Mohammad Reza Rahimpour and published by Woodhead Publishing. This book was released on 2020-08-04 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Carbon Capture reviews major implementations of CO2 capture, including absorption, adsorption, permeation and biological techniques. For each approach, key benefits and drawbacks of separation methods and technologies, perspectives on CO2 reuse and conversion, and pathways for future CO2 capture research are explored in depth. The work presents a comprehensive comparison of capture technologies. In addition, the alternatives for CO2 separation from various feeds are investigated based on process economics, flexibility, industrial aspects, purification level and environmental viewpoints. Explores key CO2 separation and compare technologies in terms of provable advantages and limitations Analyzes all critical CO2 capture methods in tandem with related technologies Introduces a panorama of various applications of CO2 capture

Download or read book Amine Solvent Development for Carbon Dioxide Capture written by Yang Du (active 21st century) and published by . This book was released on 2016 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: 36 novel aqueous piperazine (PZ)-based amine blends for CO2 capture from flue gas were screened for their thermal degradation, amine volatility, CO2 cyclic capacity, and CO2 absorption rate at normal operating conditions. These amines include 7 imidazoles, 8 cyclic and long-chain diamines, 12 tertiary amines, 4 hindered amines, 3 hindered and tertiary amino acids, and 2 ether amines that were selected based on known amine structure-property relationships and their potential for industrial application. 18 thermally stable PZ-based amine blends were identified with proposed degradation mechanisms. 14 novel tertiary and hindered amines were found to have a lower volatility than 2-amino-2-methyl-1-propanol (AMP). A group contribution model to predict amine volatility was developed. In a PZ/tertiary amine, the optimum pKa of the tertiary amine was around 9.1 to give the highest CO2 cyclic capacity. A generic model for PZ/tertiary amines was developed in Aspen Plus®, which can predict the CO2 vapor-liquid-equilibrium based on the pKa of the tertiary amine in blend. To a lesser degree than pKa, the polarity of the tertiary amine also affects the CO2 solubility of the blend. CO2 absorption rates of most 2.5 m PZ/2.5 m tertiary amines are slightly lower than 2.5 m PZ itself, due to the higher viscosity of the blends, but they still absorb CO2 much faster than 7 m monoethanolamine (MEA). 2 m PZ/3 m 4-hydroxy-1-methylpiperidine (HMPD) is the blend that shows the best overall properties for thermal stability, amine volatility, CO2 cyclic capacity, and CO2 absorption rate. 2 m PZ/3 m HMPD also has a much better solid solubility than 5 m PZ. The capital and energy cost for flue gas CO2 capture using 2 m PZ/3 m HMPD is expected to be much lower than that using 7 m MEA, while comparable to that using 5 m PZ. Thermally degraded diglycolamine® (DGA®)/dimethylaminoethoxyethanol (DMAEE) was found to have a better performance for CO2 capture than the original solvent. At high temperature, DGA®/DMAEE reaches equilibrium with its major degradation product, methylaminoethoxyethanol (MAEE). The production of MAEE enhances the CO2 absorption rate, while maintaining the CO2 capacity of the original solvent.

Download or read book Evaluation of the Heat Duty of Catalyst aided Amine based Post Combustion CO2 Capture written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 34th European Symposium on Computer Aided Process Engineering 15th International Symposium on Process Systems Engineering written by Flavio Manenti and published by Elsevier. This book was released on 2024-06-28 with total page 3634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering, contains the papers presented at the 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering joint event. It is a valuable resource for chemical engineers, chemical process engineers, researchers in industry and academia, students, and consultants for chemical industries. Presents findings and discussions from the 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering joint event

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 Gas Treating with Chemical Solvents written by Giovanni Astarita and published by John Wiley & Sons. This book was released on 1983 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Capture and Storage written by Steve A. Rackley and published by Butterworth-Heinemann. This book was released on 2017-09-05 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Capture and Storage, Second Edition, provides a thorough, non-specialist introduction to technologies aimed at reducing greenhouse gas emissions from burning fossil fuels during power generation and other energy-intensive industrial processes, such as steelmaking. Extensively revised and updated, this second edition provides detailed coverage of key carbon dioxide capture methods along with an examination of the most promising techniques for carbon storage. The book opens with an introductory section that provides background regarding the need to reduce greenhouse gas emissions, an overview of carbon capture and storage (CCS) technologies, and a primer in the fundamentals of power generation. The next chapters focus on key carbon capture technologies, including absorption, adsorption, and membrane-based systems, addressing their applications in both the power and non-power sectors. New for the second edition, a dedicated section on geological storage of carbon dioxide follows, with chapters addressing the relevant features, events, and processes (FEP) associated with this scenario. Non-geological storage methods such as ocean storage and storage in terrestrial ecosystems are the subject of the final group of chapters. A chapter on carbon dioxide transportation is also included. This extensively revised and expanded second edition will be a valuable resource for power plant engineers, chemical engineers, geological engineers, environmental engineers, and industrial engineers seeking a concise, yet authoritative one-volume overview of this field. Researchers, consultants, and policy makers entering this discipline also will benefit from this reference. Provides all-inclusive and authoritative coverage of the major technologies under consideration for carbon capture and storage Presents information in an approachable format, for those with a scientific or engineering background, as well as non-specialists Includes a new Part III dedicated to geological storage of carbon dioxide, covering this topic in much more depth (9 chapters compared to 1 in the first edition) Features revisions and updates to all chapters Includes new sections or expanded content on: chemical looping/calcium looping; life-cycle GHG assessment of CCS technologies; non-power industries (e.g. including pulp/paper alongside ones already covered); carbon negative technologies (e.g. BECCS); gas-fired power plants; biomass and waste co-firing; and hydrate-based capture

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.