Current status and challenges of the ammonia-based CO2 capture technologies toward commercialization

Han, Kunwoo; Ahn, Chi Kyu; Lee, Man Su; Rhee, Chang-Ho; Kim, Je Young; Chun, Hee Dong

doi:10.1016/j.ijggc.2013.01.007

Cited by 120 publications

(57 citation statements)

References 25 publications

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“…In addition, the necessary reduction of ammonia emissions leads to further energy requirements, and solvent production as well as the remaining ammonia losses to the environment have a more significant environmental impact than CO 2 removal with MEA [50]. Some technical issues should be also resolved to ensure economic viability, such as: suppression of ammonia vaporization, heat integration, minimization of absorbent flow rate, and bicarbonate-prevalent operation [17]. Thus, ammonia can be a possible alternative as CO 2 absorbent in CO 2 capture but it may not fulfill the expectations of capture of CO 2 in a global scenario due to the intrinsic penalty (energetic and environmental) that takes place during its use and production.…”

Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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a b s t r a c t a r t i c l e i n f o Available online xxxx Keywords: CO 2 absorption MEA Amines Global demand Alternative solvents Alternative technologiesRecent research on CO 2 capture is focusing on the optimization of CO 2 absorption using amines (mainly monoethanolamine-MEA) in order to minimize the energy consumption of this very energy-intensive process and improve the absorption efficiency. Process optimization is always required and this research is worth and necessary. However, the main concern arises when thinking of the overall process: solvent production, solvent use and regeneration, and environmental effects related to its use/emissions. The production of MEA from ammonia involves important CO 2 emissions during the Haber-Bosch process. The regeneration of the solvent after the absorption is also an indirect source of CO 2 related to the use of fuels (i.e., combustion processes for energy supply). Thus, the evaluation of the overall balance of CO 2 emitted and captured is essential to determine the efficiency of the process. In addition, other environmental impacts associated to the toxicity and environmental fate of the solvent have to be considered. The use of MEA and other amines in CO 2 capture is a point of concern and a global application does not seem to be the best strategy. This review aims at giving an overview of the main implications of using MEA as absorption solvent for CO 2 capture together with the last advances in research to improve the conventional absorption process. Furthermore, alternatives of using other solvents and/or using other technology and their advantages and weak points will be briefly provided. An approach oriented to produce CO 2 -based products with economic value that can be reintegrated in a closed carbon loop, reducing the use of fresh materials and decreasing the production cost, should be the final objective of current research on CO 2 capture.

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Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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“…Carbon dioxide (CO 2 ) is considered to be themain contributing factor to global warming and climate change,CO 2 capture technologies have started getting attention [1],2].Aqueous ammonia-based CO 2 capture technology has many technical and economical advantages over amine-based capture technology, such as high CO 2 absorption capacity, low regeneration energy, no sorbent degradation, cheap chemical cost,and simultaneous capture of multiple pollutants [3]-10]. However ammonia absorbent has a limitation in practical application because of its high vapor pressure, which causes highloss of ammonia in regeneration process [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Metal Ion on Ammonium Bicarbonate Solution Decomposed into Carbon Dioxide

Hu¹,

Li²,

Jin³

et al. 2017

Proceedings of the 2nd 2016 International Conference on Sustainable Development (ICSD 2016)

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Abstract-Ammonia-based carbon capture process is one of the promising technologiesfor CO2 mitigation. However, it has a problem to be solved for practical implementation due to the high volatilityof ammonia, which incurs ammonia lose during regeneration. Effects of Fe 3+ or Co 2+ on ammonia escape and CO2desorption in NH4HCO3 solution decomposition processwere investigated. The results showed that, the addition of metal ion noticeably decreased ammonia escape and slightly increased desorption proportion due to the complexation of metal ion and free ammonia.The metal ion added also promoted desorption rate in this process. Moreover, metal ion Fe 3+ is more effective than Co 2+ on CO2desorption and ammonia escape in the regeneration process.

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“…The technologies used to separate CO 2 from exhaust gases include absorption using wet absorbents, absorption using dry absorbents, and gas separation using a membrane [6,7]. Recent research has focused on the development of the process to unite separate processes into a single unit.…”

Section: Introductionmentioning

confidence: 99%

“…Also, this research method has not been established and data on its benefits are very limited. In addition, experimental research related to the CAP has not been announced yet [6].…”

Section: Introductionmentioning

confidence: 99%

“…The CO 2 capture using the CAP is not yet a commercialized technology. Moreover, the theoretical and analytical data of the CAP research is available in the literature, but experimental data of the CAP is very limited in the open literature [6,17]. That is why in this research, we designed and produced laboratory-scale experimental equipment to investigate the performance of the CAP in real situations at various operating conditions.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on CO2 capture by chilled ammonia process

Bak

Asif

Kim

2015

Chemical Engineering Journal

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Current status and challenges of the ammonia-based CO2 capture technologies toward commercialization

Cited by 120 publications

References 25 publications

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

Effect of Metal Ion on Ammonium Bicarbonate Solution Decomposed into Carbon Dioxide

Experimental study on CO2 capture by chilled ammonia process

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