scholarly journals Techno-Economic Analyses of the CaO/CaCO3 Post-Combustion CO2 Capture From NGCC Power Plants

2021 ◽  
Vol 2 ◽  
Author(s):  
Chao Fu ◽  
Simon Roussanaly ◽  
Kristin Jordal ◽  
Rahul Anantharaman
Keyword(s):  
Power Plants ◽  
Research Work ◽  
Combined Cycle ◽  
Flue Gases ◽  
Economic Study ◽  
Calcium Looping ◽  
Natural Gas Combined Cycle ◽  
Combustion Technology ◽  
Economic Analyses ◽  
Plant Efficiency

Calcium looping is a post-combustion technology that enables CO2 capture from the flue gases of industrial processes. While considerable studies have been performed at various levels from fundamental reaction kinetics to the overall plant efficiency, research work on techno-economic analyses of the calcium looping processes is quite limited, particularly for the Natural Gas Combined Cycle (NGCC). Earlier work has shown that theoretically, a high thermal efficiency can be obtained when integrating calcium looping in the NGCC using advanced process configurations and a synthetic CaO sorbent. This paper presents an investigation of calcium looping capture for the NGCC through a techno-economic study. One simple and one advanced calcium looping processes for CO2 capture from NGCC are evaluated. Detailed sizing of non-conventional equipment such as the carbonator/calciner and the solid-solid heat exchanger are performed for cost analyses. The study shows that the CO2 avoided cost is 86–95 €/tCO2, avoided, which is considerably more expensive than the reference amine (MEA) capture system (49 €/tCO2, avoided). The calcium looping processes considered have thus been found not to be competitive with the reference MEA process for CO2 capture from NGCC with the inputs assumed in this work. Significant improvements would be required, for example, in terms of equipment capital cost, plant efficiency and sorbent annual cost in order to be make the calcium looping technology more attractive for capturing CO2 from NGCC plants.

scholarly journals Process modelling and techno-economic analysis of natural gas combined cycle integrated with calcium looping

2016 ◽  
Vol 20 (suppl. 1) ◽  
pp. 59-67 ◽  
Author(s):  
María Erans ◽  
Dawid Hanak ◽  
Jordi Mir ◽  
Edward Anthony ◽  
Vasilije Manovic
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Combined Cycle ◽  
Process Models ◽  
Capital Costs ◽  
Calcium Looping ◽  
Industrial Sectors ◽  
Natural Gas Combined Cycle ◽  
Before And After ◽  
Economic Analyses

Calcium looping (CaL) is promising for large-scale CO2 capture in the power generation and industrial sectors due to the cheap sorbent used and the relatively low energy penalties achieved with this process. Because of the high operating temperatures the heat utilisation is a major advantage of the process, since a significant amount of power can be generated from it. However, this increases its complexity and capital costs. Therefore, not only the energy efficiency performance is important for these cycles, but also the capital costs must be taken into account, i.e. techno-economic analyses are required in order to determine which parameters and configurations are optimal to enhance technology viability in different integration scenarios. In this study the integration scenarios of CaL cycles and natural gas combined cycles (NGCC) are explored. The process models of the NGCC and CaL capture plant are developed to explore the most promising scenarios for NGCC-CaL integration with regards to efficiency penalties. Two scenarios are analysed in detail, and show that the system with heat recovery steam generator (HRSG) before and after the capture plant exhibited better performance of 49.1% efficiency compared with that of 45.7% when only one HRSG is located after the capture plant. However, the techno-economic analyses showed that the more energy efficient case, with two HRSGs, implies relatively higher cost of electricity (COE), 44.1?/MWh, when compared to that of the reference plant system (33.1?/MWh). The predicted cost of CO2 avoided for the case with two HRSGS is 29.3 ?/ton CO2.

Current and Future Technologies for Natural Gas Combined Cycle (NGCC) Power Plants

2013 ◽  
Author(s):  
Norma J. Kuehn ◽  
Kajal Mukherjee ◽  
Paul Phiambolis ◽  
Lora L. Pinkerton ◽  
Elsy Varghese ◽  
...  
Keyword(s):  
Natural Gas ◽  
Power Plants ◽  
Combined Cycle ◽  
Natural Gas Combined Cycle ◽  
Future Technologies

Sequential Combustion in Ansaldo Energia Gas Turbines: The Technology Enabler for CO2-Free, Highly Efficient Power Production Based on Hydrogen

2020 ◽  
Author(s):  
Andrea Ciani ◽  
John P. Wood ◽  
Anders Wickström ◽  
Geir J. Rørtveit ◽  
Rosetta Steeneveldt ◽  
...  
Keyword(s):  
Power Generation ◽  
Free Energy ◽  
Gas Turbines ◽  
Carbon Capture ◽  
Power Plants ◽  
Carbon Capture And Storage ◽  
Combined Cycle ◽  
Fuel Flexibility ◽  
Combustion Technology ◽  
And Storage

Abstract Today gas turbines and combined cycle power plants play an important role in power generation and in the light of increasing energy demand, their role is expected to grow alongside renewables. In addition, the volatility of renewables in generating and dispatching power entails a new focus on electricity security. This reinforces the importance of gas turbines in guaranteeing grid reliability by compensating for the intermittency of renewables. In order to achieve the Paris Agreement’s goals, power generation must be decarbonized. This is where hydrogen produced from renewables or with CCS (Carbon Capture and Storage) comes into play, allowing totally CO2-free combustion. Hydrogen features the unique capability to store energy for medium to long storage cycles and hence could be used to alleviate seasonal variations of renewable power generation. The importance of hydrogen for future power generation is expected to increase due to several factors: the push for CO2-free energy production is calling for various options, all resulting in the necessity of a broader fuel flexibility, in particular accommodating hydrogen as a future fuel feeding gas turbines and combined cycle power plants. Hydrogen from methane reforming is pursued, with particular interest within energy scenarios linked with carbon capture and storage, while the increased share of renewables requires the storage of energy for which hydrogen is the best candidate. Compared to natural gas the main challenge of hydrogen combustion is its increased reactivity resulting in a decrease of engine performance for conventional premix combustion systems. The sequential combustion technology used within Ansaldo Energia’s GT36 and GT26 gas turbines provides for extra freedom in optimizing the operation concept. This sequential combustion technology enables low emission combustion at high temperatures with particularly high fuel flexibility thanks to the complementarity between its first stage, stabilized by flame propagation and its second (sequential) stage, stabilized by auto-ignition. With this concept, gas turbines are envisaged to be able to provide reliable, dispatchable, CO2-free electric power. In this paper, an overview of hydrogen production (grey, blue, and green hydrogen), transport and storage are presented targeting a CO2-free energy system based on gas turbines. A detailed description of the test infrastructure, handling of highly reactive fuels is given with specific aspects of the large amounts of hydrogen used for the full engine pressure tests. Based on the results discussed at last year’s Turbo Expo (Bothien et al. GT2019-90798), further high pressure test results are reported, demonstrating how sequential combustion with novel operational concepts is able to achieve the lowest emissions, highest fuel and operational flexibility, for very high combustor exit temperatures (H-class) with unprecedented hydrogen contents.

Multi Criteria Evaluation Model of Renewable Energy Power Plants Based on ELECTRE Method

2009 ◽  
Author(s):  
Jiang-Jiang Wang ◽  
You-Yin Jing ◽  
Jun-Hong Zhao
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Evaluation Model ◽  
Evaluation Criteria ◽  
Combined Cycle ◽  
Hydro Power ◽  
Electricity Cost ◽  
Natural Gas Combined Cycle ◽  
Electre Method ◽  
Save Energy

The feasibility evaluation of renewable energy power plants from multi criteria is necessary to save energy, protect environment and develop technology. This paper employs the improved elimination et choice translating reality (ELECTRE) method to evaluate 10 kinds of energy power plants in five criteria. The plants includes the coal fired, solar-thermal, geothermal, biomass, nuclear, photovoltaic solar, wind, ocean, hydro and natural gas combined cycle power plants. The evaluation criteria reflects four aspects from the technology, economy, environment and society. The concrete criteria are efficiency, installation, electricity cost, CO2 emission, and land requirement. Finally, the multi criteria evaluations show that the hydro power plant in the renewable energy are the optimal schemes at present.

Turning NGCC Into IGCC: Cycle Retrofitting Issues

2006 ◽  
Author(s):  
Juan Pablo Gutierrez ◽  
Terry B. Sullivan ◽  
Gerald J. Feller
Keyword(s):  
Natural Gas ◽  
Gas Turbines ◽  
Power Plants ◽  
Combined Cycle ◽  
Integrated Gasification Combined Cycle ◽  
Water Steam ◽  
Power Block ◽  
Starting Point ◽  
Natural Gas Combined Cycle ◽  
Gas Plants

The increase in price of natural gas and the need for a cleaner technology to generate electricity has motivated the power industry to move towards Integrated Gasification Combined Cycle (IGCC) plants. The system uses a low heating value fuel such as coal or biomass that is gasified to produce a mixture of hydrogen and carbon monoxide. The potential for efficiency improvement and the decrease in emissions resulting from this process compared to coal-fired power plants are strong evidence to the argument that IGCC technology will be a key player in the future of power generation. In addition to new IGCC plants, and as a result of new emissions regulations, industry is looking at possibilities for retrofitting existing natural gas plants. This paper studies the feasibility of retrofitting existing gas turbines of Natural Gas Combined Cycle (NGCC) power plants to burn syngas, with a focus on the water/steam cycle design limitations and necessary changes. It shows how the gasification island processes can be treated independently and then integrated with the power block to make retrofitting possible. This paper provides a starting point to incorporate the gasification technology to current natural gas plants with minor redesigns.

scholarly journals Challenges and opportunities for adsorption-based CO2 capture from natural gas combined cycle emissions

2019 ◽  
Vol 12 (7) ◽  
pp. 2161-2173 ◽  
Author(s):  
Rebecca L. Siegelman ◽  
Phillip J. Milner ◽  
Eugene J. Kim ◽  
Simon C. Weston ◽  
Jeffrey R. Long
Keyword(s):  
Natural Gas ◽  
Co2 Capture ◽  
Carbon Capture ◽  
Power Plants ◽  
Primary Energy ◽  
Combined Cycle ◽  
Challenges And Opportunities ◽  
Natural Gas Combined Cycle ◽  
New Research

As natural gas supplies a growing share of global primary energy, new research efforts are needed to develop adsorbents for carbon capture from gas-fired power plants alongside efforts targeting emissions from coal-fired plants.

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