Performance of formulated solvent in handling of enriched CO2 flue gas stream

Aboudheir, Ahmed; ElMoudir, Walid

doi:10.1016/j.egypro.2009.01.028

Cited by 14 publications

(8 citation statements)

References 5 publications

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“…The main disadvantages of chemical absorption arise from the high thermal energy needed to regenerate the solvent and extract the CO 2 , and problems with corrosion and solvent degradation. It has been verified that the reboiler duty of the stripping column is sensitive to the CO 2 concentration of exhaust gas [5,6]. As shown in Figure 1, for a CO 2 concentration increase from 1 to 6 mol %, the specific reboiler duty decreases sharply, from 7.5 to 3.76 MJ/kg CO 2 .…”

mentioning

confidence: 87%

Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture

Ditaranto

Berstad

2011

Energy

118

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This is an accepted version of a paper published in Energy. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the published paper: Li, H., Ditaranto, M., Berstad, D. (2011) "Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture" Energy, 36 (2) AbstractEnhanced CO 2 concentration in exhaust gas is regarded as a potentially effective method to reduce the high electrical efficiency penalty caused by CO 2 chemical absorption in postcombustion capture systems. The present work evaluates the effect of increasing CO 2 concentration in the exhaust gas of gas turbine based power plant by four different methods: exhaust gas recirculation (EGR), humidification (EvGT), supplementary firing (SFC) and external firing (EFC). Efforts have been focused on the impacts on cycle efficiency, combustion, gas turbine components, and cost. The results show that the combined cycle with EGR has the capability to change the molar fraction of CO 2 with the largest range, from 3.8 mol% to at least 10 mol%, and with the highest electrical efficiency. The EvGT cycle has relatively low additional cost impact as it does not require any bottoming cycle. The externally fired method was found to have the minimum impacts on both combustion and turbomachinery.

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mentioning

confidence: 87%

Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture

Ditaranto

Berstad

2011

Energy

118

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“…absorption through chemical solvent, physical absorption, separation by membrane, cryogenic process and microbial/algal systems have been developed, out of which most mature scientific and industrially adapted technique is absorption by liquid solvent [6][7][8][9][10]. Since long time, different types of solvents have been employed to capture carbon dioxide from various gas streams [11][12][13]. The most commonly used chemical solvents are alkanoamines, like monoethanolamine (MEA), diethanolamine (DEA) and methyldiethanolamine (MDEA) [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Measurement and correlation of physical properties of aqueous solutions of tetrabutylammonium hydroxide, piperazine and their aqueous blends

Safdar

Omar

Ismail

et al. 2015

Chinese Journal of Chemical Engineering

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“…and high O 2 contents (∼12–13%vol.) are typical of gas‐fired systems, which are known to have detrimental effects on the energy requirements of amine capture plants and on the long‐term performance of the capture media, respectively . Extensive efforts have been devoted to reducing the energy consumption of amine capture plants and decreasing the costs of CO 2 capture .…”

Section: Introductionmentioning

confidence: 99%

“…are typical of gas-fired systems, which are known to have detrimental effects on the energy requirements of amine capture plants and on the long-term performance of the capture media, respectively. 7,8 Extensive efforts have been devoted to reducing the energy consumption of amine capture plants and decreasing the costs of CO 2 capture. [9][10][11] Moreover, numerous investigations have focused on increasing the CO 2 concentration in the flue gas of gas-fired systems (and thus, reducing its O 2 content), 8,[12][13][14][15][16][17][18][19] which can improve the performance of the absorber and stripper units and reduce the size of the whole capture plant.…”

Section: Introductionmentioning

confidence: 99%

Making gas‐CCS a commercial reality: The challenges of scaling up

et al. 2017

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Significant reductions in CO 2 emissions are required to limit the global temperature rise to 2°C. Carbon capture and storage (CCS) is a key enabling technology that can be applied to power generation and industrial processes to lower their carbon intensity. There are, however, several challenges that such a method of decarbonization poses when used in the context of natural gas (gas-CCS), especially for solvent-based (predominantly amines) post-combustion capture. These are related to: (i) the low CO 2 partial pressure of the exhaust gases from gas-fired power plants (ß3-4%vol. CO 2 ), which substantially limits the driving force for the capture process; (ii) their high O 2 concentration (ß12-13%vol. O 2 ), which can degrade the capture media via oxidative solvent degradation; and (iii) their high volumetric flow rates, which means large capture plants are needed. Such post-combustion gas-CCS features unavoidably lead to increased CO 2 capture costs. This perspective aims to summarize the key technologies used to overcome these as a priority, including supplementary firing, humidified systems, exhaust gas recirculation and selective exhaust gas recirculation. These focus on the maximum CO 2 levels achievable for each, as well as the electrical efficiencies attainable when the capture penalty is taken into account. Oxy-turbine cycles are also discussed as an alternative to post-combustion gas-CCS, indicating the main advantages and limitations of these systems together with the expected electrical efficiencies. Furthermore, we consider the challenges for scaling-up and deployment of these technologies at a commercial level to enable gas-CCS to play a crucial role in a low-carbon future. C

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Performance of formulated solvent in handling of enriched CO2 flue gas stream

Cited by 14 publications

References 5 publications

Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture

Technologies for increasing CO2 concentration in exhaust gas from natural gas-fired power production with post-combustion, amine-based CO2 capture

Measurement and correlation of physical properties of aqueous solutions of tetrabutylammonium hydroxide, piperazine and their aqueous blends

Making gas‐CCS a commercial reality: The challenges of scaling up

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