Calcium looping with supercritical CO2 cycle for decarbonisation of coal-fired power plant

Hanak, Dawid P.

doi:10.1016/j.energy.2016.02.079

Cited by 70 publications

(28 citation statements)

References 64 publications

(113 reference statements)

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“…The high-grade heat produced at the carbonator can be supplied for a steam cycle in order to produce more power. This lowers the energy penalty from conventional post combustion capture [83]. The limestone is available in huge quantities and it is a non-hazardous substance.…”

Section: Calcium Looping Technologymentioning

confidence: 99%

A Critical Review of CO2 Capture Technologies and Prospects for Clean Power Generation

2019

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With rapid growth in global demand for energy, the emission of CO2 is increasing due to the use of fossil fuels in power plants. Effective strategies are required to decrease the industrial emissions to meet the climate change target set at 21st Conference of the Parties (COP 21). Carbon capture and storage have been recognized as the most useful methods to reduce the CO2 emissions while using fossil fuels in power generation. This work reviews different methods and updates of the current technologies to capture and separate CO2 generated in a thermal power plant. Carbon capture is classified in two broad categories depending on the requirement of separation of CO2 from the gases. The novel methods of oxy combustion and chemical looping combustion carbon capture have been compared with the traditional post combustion and precombustion carbon capture methods. The current state of technology and limitation of each of the processes including commonly used separation techniques for CO2 from the gas mixture are discussed in this review. Further research and investigations are suggested based on the technological maturity, economic viability, and lack of proper knowledge of the combustion system for further improvement of the capture system.

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Section: Calcium Looping Technologymentioning

confidence: 99%

A Critical Review of CO2 Capture Technologies and Prospects for Clean Power Generation

2019

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“…This energy penalty has arisen primarily from the power requirement of the ASU (56%) and the CPU (31%), which in total accounted for about 87% of the parasitic load in the considered system. Although such parasitic load results in a considerable efficiency penalty compared to novel CO2 capture and separation technologies, such as calcium looping that was shown to result in an efficiency penalty of 6-8% points [34,[66][67][68], it is predicted that the specific power requirement of the ASU will reduce from up to 260 kWh/tO2 [8,31,32] to 140 kWh/tO2 [69], which could reduce the efficiency penalty to 5-7% points [37]. The efficiency penalty can also be reduced by increasing the degree of heat and work integration between the ASU and the CPU.…”

Section: Thermodynamic Performance Evaluationmentioning

confidence: 99%

Techno-economic analysis of oxy-combustion coal-fired power plant with cryogenic oxygen storage

2017

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Around 43% of the cumulative CO2 emission from the power sector between 2012 and 2050 could be mitigated through implementation of carbon capture and storage, and utilisation of renewable energy sources. Energy storage technologies can increase the efficiency of energy utilisation and thus should be widely deployed along with lowemission technologies. This study evaluates the techno-economic performance of cryogenic O2 storage implemented in an oxy-combustion coal-fired power plant as a means of energy storage. Such system was found to have high energy density and specific energy that compare favourably with other energy storage technologies. The average daily efficiency penalty of the analysed system was 12.3-12.5%HHV points, which is higher than the value for the oxy-combustion coal-fired power plant without energy storage (11.2%HHV points). Yet, investment associated with cryogenic O2 storage has marginal effect on the specific capital cost, and thus the levelised cost of electricity and cost of CO2 avoided. Therefore, the benefits of energy storage can be incorporated into oxy-combustion coal-fired power plants at marginal capital investment. Importantly, implementation of cryogenic O2 storage was found to increase the daily profit by 3.8-4.1%. Such performance would result in higher daily profit from oxy-combustion compared to an air-combustion system if the carbon tax is higher than 29.1-29.2 €/tCO2. Finally, utilisation of renewable energy sources for cryogenic O2 production can reduce the daily efficiency penalty by 4.7%HHV points and increase the daily profit by 11.6%. For this reason, a synergy between fossil fuel electricity generation and renewable energy sources via CO2 capture integrated with energy storage needs to be commercially established.

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“…S-CO2 Brayton cycle has been found to have higher cycle efficiency than steam Rankine cycle and other gas Brayton cycles in the temperature range typically encountered in pulverised coal-fired power plant (450 0 C to 650 0 C) [6][7][8][9][10]. Other potential benefits of s-CO2 cycle compared to steam cycle include [6,[11][12][13][14][15][16][17][18][19]:…”

Section: Introductionmentioning

confidence: 99%

“…Various researchers have also proposed adaptation of s-CO2 Brayton cycle as the main/topping cycle for coal-based power plant. However, one problem of such application is the inefficient utilisation of the heat content of the flue gas [16,30,31]. Mecheri and Le Moullec [30] investigated the performance of coal-fired s-CO2 Brayton cycle by comparing the effects of number of reheat and number of recompression, and the effects of advanced flue gas economiser configurations.…”

Section: Introductionmentioning

confidence: 99%

“…Technical and economic evaluation of the plant showed that 15% reduction in levelised cost of electricity and 45% reduction in the cost of avoided CO2 emission could be achieved. Hanak and Manovic [16] proposed s-CO2 cycle instead of the conventional steam cycle for electricity generation from the high-grade heat of calcium looping process. Results of retrofitting the calcium looping process with s-CO2 recompression cycle indicated that a gain in efficiency of about 1-2% over that of the steam cycle could be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture

Olumayegun

Wang

Oko

2019

Energy

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Power generation from coal-fired power plants represents a major source of CO2 emission into the atmosphere. Efficiency improvement and integration of carbon capture and storage (CCS) facilities have been recommended for reducing the amount of CO2 emissions. The focus of this work was to evaluate the thermodynamic performance of s-CO2 Brayton cycles coupled to coal-fired furnace and integrated with 90% post-combustion CO2 capture. The modification of the s-CO2 power plant for effective utilisation of the sensible heat in the flue gas was examined. Three bottoming s-CO2 cycle layouts were investigated, which included a newly proposed single recuperator recompression cycle. The performances of the coal-fired s-CO2 power plant with and without carbon capture were compared. Results for a 290 bar and 593 0 C power cycle without CO2 capture showed that the configuration with single recuperator recompression cycle as bottoming cycle has the highest plant net efficiency of 42.96% (Higher Heating Value). Without CO2 capture, the efficiencies of the coal-fired s-CO2 cycle plants were about 3.34-3.86% higher than the steam plant and about 0.68-1.31% higher with CO2 capture. The findings so far underscored the promising potential of cascaded s-CO2 power cycles for coal-fired power plant application.

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Calcium looping with supercritical CO2 cycle for decarbonisation of coal-fired power plant

Cited by 70 publications

References 64 publications

A Critical Review of CO2 Capture Technologies and Prospects for Clean Power Generation

A Critical Review of CO2 Capture Technologies and Prospects for Clean Power Generation

Techno-economic analysis of oxy-combustion coal-fired power plant with cryogenic oxygen storage

Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture

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