Precipitating Amino Acid Solvents for CO2 Capture. Opportunities to Reduce Costs in Post Combustion Capture.

Practical experience in post-combustion CO2 capture using reactive solvents in large pilot and demonstration plants

“…As pointed out by Rabensteiner et al (2014), this is an indication that energy consumption will be one of the areas where amino acid based absorption process might have to improve in order to compete with the amine based technology. On the other hand, Sanchez-Fernandez et al (2014) have reported on simulation work done by The Netherlands' TNO, as well as TU Delft and the UK's Process Monkey for the use of potassium taurate based precipitating amino acid salts processes called DECAP and DECAP plus in terms of energy requirement saving within the CO 2 removal unit. The simulation results were claimed to reduce energy requirement for the DECAP processes by 15% as compared with that for the MEA baseline case (Sanchez-Fernandez et al, 2014).…”

“…On the other hand, Sanchez-Fernandez et al (2014) have reported on simulation work done by The Netherlands' TNO, as well as TU Delft and the UK's Process Monkey for the use of potassium taurate based precipitating amino acid salts processes called DECAP and DECAP plus in terms of energy requirement saving within the CO 2 removal unit. The simulation results were claimed to reduce energy requirement for the DECAP processes by 15% as compared with that for the MEA baseline case (Sanchez-Fernandez et al, 2014). However, actual pilot plant test must be used to validate the modeling data, which no information is available up to the present date.…”

Understanding Carbamate Formation Reaction Thermochemistry of Amino Acids as Solvents for Postcombustion CO2 Capture

“…19 One of the distinct features of some amino acids as PCC solvents is the formation of solid precipitates after absorption of CO2. This can further increase CO2 loading and reduce energy requirement 15,[20][21] . Ahn et.…”

“…Amino acids can also be neutralized with an amine. 21,23 These amine amino acid salt solutions (AAAS) of glycine, alanine and sarcosine performed better than MEA at similar concentration levels in studies for their potential of CO2 capture. 21 In their study of AAAS, sarcosine was found to perform best, but further room for enhancement of solvent properties to make PCC process more efficient were shown.…”

“…21,23 These amine amino acid salt solutions (AAAS) of glycine, alanine and sarcosine performed better than MEA at similar concentration levels in studies for their potential of CO2 capture. 21 In their study of AAAS, sarcosine was found to perform best, but further room for enhancement of solvent properties to make PCC process more efficient were shown. 24 Amino acids such as glycine, [25][26][27] arginine, 25,28 sarcosine, 25,27 proline, 25,27 histidine, 25 alanine; 25 have also been used as a promoters in various PCC processes.…”