Experimental results of advanced technological modifications for a CO2 capture process using amine scrubbing

• Published in: International journal of greenhouse gas control Vol. 96; p. 103014
• Main Authors: Krótki, Aleksander, Więcław Solny, Lucyna, Stec, Marcin, Spietz, Tomasz, Wilk, Andrzej, Chwoła, Tadeusz, Jastrząb, Krzysztof
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.05.2020
• Subjects: CO2 capture; Interheating (do 5 max); Pilot plant; Split flow; Pilot plant; Interheating (do 5 max); CO2 capture; Split flow
• ISSN: 1750-5836; 1878-0148
• DOI: 10.1016/j.ijggc.2020.103014

•The split flow flow system allowed to achieve low reboiler heat duties in a wide range of column liquid to gas ratio.•For various flow configurations, for systems having interheating, the reboiler heat duties can be reduced.•In the interheated stripper reduces heat losses.•The lowest external condenser cooling stream needed for the split flow was achieved. This paper provides a discussion of the experimental results obtained at the amine-based carbon capture pilot plant having the capacity of 200 m3n/h of flue gas, using 30 wt% ethanolamine solution as a solvent. The objective was to prove the superiority of application of advanced amine flow systems as well as of the novel stripper internal heater fulfilling pilot Technology Readiness Level. Standard process flow sheet, multi absorber feed and split-flow process modifications with and without stripper interheating were examined. A vast number of process parameters were recorded during the trials. The data were critically analysed, compared and presented in the paper. Demonstrated process flow modifications resulted in a reduction of the reboiler heat duty by about 5%, while using internal stripper interheatingby 9÷11 %, comparing to standard amine-based carbon capture plant.