Carbon capture and storage using low-temperature post-combustion technologies (original) (raw)
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Low Temperature CO2 Capture for Near-term Applications
Energy Procedia, 2013
Carbon dioxide (CO 2) capture and storage (CCS) is an important option aimed at stabilizing the long term atmospheric levels of anthropogenic emissions of CO 2 , which is one of several greenhouse gases contributing to the global warming of our planet. However, the weak policies and economic drivers for CCS have slowed down the commercialization of CO 2 capture technologies needed for large scale removal. At the same time CO 2 for the food and beverage industry is an existing and currently growing market for which the monoethanolamine (MEA)-based approach to provide CO 2 is very energy intensive and in many cases not economical. Finding existing applications for next generation CO 2 capture technologies at the small to medium-scale provides an important intermediate step for demonstrating and gaining the necessary knowledge required for further scaling up of novel CCS technologies. Low temperature CO2 capture represents a novel alternative to state-of-the-art MEA post-combustion technology. The separation process aims at reducing the flue gas temperature from ambient to a low temperature range at which the CO 2 freezes to be able to be removed from the main gas stream in a solid phase. This study presents the results of the assessment of integrating a novel low temperature CO 2 capture technology into a Jenbacher reciprocating gas engine by investigating two different configurations of the low temperature CO 2 capture process and comparing their performance with a stateof-the-art MEA absorption process. Results indicate that both configurations of the low temperature CO 2 removal processes enable reduction of the specific energy requirement to capture CO 2 by approximately 35% compared to the state-of-the-art MEA process.
Applied Thermal Engineering, 2020
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Post-combustion CO2 capture with chemical absorption: A state-of-the-art review
Chemical Engineering Research and Design, 2011
Global concentration of CO 2 in the atmosphere is increasing rapidly. CO 2 emissions have an impact on global climate change. Effective CO 2 emission abatement strategies such as Carbon Capture and Storage (CCS) are required to combat this trend. There are three major approaches for CCS: Post-combustion capture, Pre-combustion capture and Oxyfuel process. Post-combustion capture offers some advantages as existing combustion technologies can still be used without radical changes on them. This makes postcombustion capture easier to implement as a retrofit option (to existing power plants) compared to the other two approaches. Therefore, post-combustion capture is probably the first technology that will be deployed. This paper aims to provide a state-of-the-art assessment of the research work carried out so far in post-combustion capture with chemical absorption. The technology will be introduced first, followed by required preparation of flue gas from power plants to use this technology. The important research programmes worldwide and the experimental studies based on pilot plants will be reviewed. This is followed by an overview of various studies based on modelling and simulation. Key issues such as energy consumption and plant flexibility will be included. Then the focus is turned to review development of different solvents and process intensification. Based on these, we try to predict challenges and potential new developments from different aspects such as new solvents, pilot plants, process heat integration (to improve efficiency), modelling and simulation, process intensification and government policy impact.
Progress on carbon dioxide capture, storage and utilisation
International Journal of Global Warming, 2020
The negative impacts of global warming on climate have been witnessed worldwide, and therefore global efforts to decrease the emission of greenhouse gases (GHGs), particularly carbon dioxide, have increased. Carbon capture (CC) strategies can effectively reduce the quantity of CO2 being released into the atmosphere by various industries. In this study, several characteristics of CC technologies are analysed, the negative environmental impacts of CO2 emissions are highlighted, policies that have recently been adopted to decrease GHG emissions are discussed, and state-of-the-art post-combustion CC, pre-combustion CC, and oxyfuel combustion CC technologies are reviewed. Furthermore, this study investigates and compares the three most common carbon separation techniques, namely, absorption, adsorption, and membrane methods. Through the investigation of the CC technologies, we discuss the practicality of implementing such methods and discuss specific case studies that have implemented CC technologies. Furthermore, we summarise ways of utilising the end-product (the captured carbon) of these technologies. Much research has gone into investigating the
Energies, 2020
The objective of this study is to assess the technical and economic potential of four alternative processes suitable for post-combustion CO2 capture from natural gas-fired power plants. These include: CO2 permeable membranes; molten carbonate fuel cells (MCFCs); pressurized CO2 absorption integrated with a multi-shaft gas turbine and heat recovery steam cycle; and supersonic flow-driven CO2 anti-sublimation and inertial separation. A common technical and economic framework is defined, and the performance and costs of the systems are evaluated based on process simulations and preliminary sizing. A state-of-the-art natural gas combined cycle (NGCC) without CO2 capture is taken as the reference case, whereas the same NGCC designed with CO2 capture (using chemical absorption with aqueous monoethanolamine solvent) is used as a base case. In an additional benchmarking case, the same NGCC is equipped with aqueous piperazine (PZ) CO2 absorption, to assess the techno-economic perspective of ...
POST COMBUSTION CARBON DIOXIDE CAPTURE
Industrial activities has been a significant cause of a lot of ongoing environmental hazards. Among them, a significant threat is from the gases which emit during several industrial processes. Gases such as CO2, NO2, and SO2 are released into the atmosphere due to fossil fuel burning and other chemical reactions. At present, different institutions and organizations are working together to minimize the damage caused by these emissions to the environment and humans by formulating policies and regulations. Further, we can see most industries are keen to implement strategies to reduce their carbon footprint by reducing the flue gas emissions. Enterprises in achieving this target can use several methods. Among them, post-combustion carbon capture is an effective method capable of reducing a significant amount of CO2 from the flue gas concentration. This paper will provide an overview of the post-combustion carbon capture technique, different post-combustion carbon capture methods, the pros, and cons of this method, current status, and various post-combustion carbon capture applications. Industries should interest in taking the support of the post-combustion carbon capture system to reduce their CO2 emissions while minimizing the disadvantages of this method.
Energy Procedia, 2012
Most energy scenarios suggest carbon capture and storage (CCS) from power generation might contribute to reduce the carbon emissions necessary to stabilize the long-term global average atmospheric temperature. GE is actively investigating and developing novel technologies for both capturing and compressing CO 2 from power plants with potential lower energy requirements and environmental impact than state-of-the-art processes. One technology that is currently the focus of significant research effort is phase-changing absorbents for post-combustion capture applications. This investigation compared the performance of phase-changing absorbents to state-of-the-art monoethanolamine (MEA) capture for three different flue gas conditions with CO 2 concentrations ranging from 4 mole% to 13 mole%. Results indicate that depending on the flue gas conditions, the specific equivalent work necessary for operating phase-changing absorbents is expected to be up to 40% lower than for MEA capture. However, as the level of maturity of phase-changing absorbents is certainly lower than MEA capture, higher uncertainty in performance is expected. Besides lower energy requirements, a reduction of up to 6% in specific water cooling load is expected from the phase-changing absorbents compared to MEA capture, in particular for cases with high CO 2 concentrations in the flue gas.
Analysis of Energetics and Economics of Sub-ambient Hybrid Post-Combustion CO2 Capture
2021
Adsorption of CO2 from post-combustion flue gas is one of the leading candidates for globally-impactful carbon capture systems. This work highlights opportunities and limitations of sub-ambient CO2 capture processes utilizing a multi-stage separation process. A hybrid process design using a combination of pressure-driven separation of CO2 from flue gas followed by CO2-rich product liquefaction to produce high purity (>99%) CO2 at pipeline conditions is considered. The economic viability of applying pressure swing adsorption (PSA) processes using fiber sorbent contactors with internal heat management were found to be most influenced by the productivity of the adsorption system. Three exemplar fiber sorbents (MIL-101(Cr), UiO-66, and zeolite 13X) were considered for application in the sub-ambient process of PSA unit. MIL-101(Cr) and UiO-66 fiber composites were estimated to have costs of capture as low as $61/tonne CO2.
Evaluation of Five Alternative CO2 Capture Technologies with Insights to Inform Further Development
Energy Procedia, 2017
The high cost of CO 2 capture using amine solvents from combustion sources such as natural gas-fired power plants remains a barrier to the adoption of CO 2 Capture and Storage (CCS) as a climate change mitigation measure. The objective of the work reported in this paper was to carry out a preliminary assessment of the potential of five alternative technologies suitable for postcombustion CO 2 capture from natural gas derived exhaust gases: • C O 2 permeable membranes • Molten Carbonate Fuel Cells • High-pressure solvent absorption from high-pressure exhaust gas from pressurised combustion / power generation • High-pressure solvent absorption supported by exhaust gas compression • Supersonic flow driven CO 2 deposition The results of the performance and cost evaluation for each technology are explained and the prospects for significant cost reduction compared to a state-of-the-art CO 2 capture process are discussed. Recommendations for further technology development activity are summarised in the conclusion of the paper.