Experiments on continuous chemical desorption of CO2-rich solutions

Weifeng Zhang, Yuanlong Xu, Zhaoxiong Deng and Qiuhua Wang

Energy, 2022, vol. 239, issue PD

Abstract: The traditional thermal desorption is replaced by chemical desorption and the desorption tower is replaced by the reaction and precipitation tank to promote industrial application of chemical desorption. Monoethanolamine (MEA), N-methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP) and potassium glycine (PG) were selected and the effects of temperature, CO2 loading, dosage of desorption agent and different calcium compounds on the desorption ratio were studied. The results indicated that desorption ratios of MEA, MDEA, AMP and PG were enhanced with increasing temperature, but the desorption ratio had a maximum at 40 °C in the case of MDEA. With increases of CO2 loading and the amount of Ca(OH)2, desorption ratios increased. The desorption ratios of four CO2-rich solutions with CaO were lower than that of Ca(OH)2, but the difference in desorption ratio decreased as reaction time increased. The desorption ratios of MEA, MDEA, AMP and PG were able to reach 84.3%,90.17%,88.71% and 92.22% in optimum operating conditions, which were higher than that of conventional thermal desorption and the optimum operating conditions were as follows: the reaction temperature is 40 °C, CO2 loading is 0.21 mol/L, Ca:C is 1:1 and the desorption agent is Ca(OH)2. This study has crucial significance for the application of chemical desorption.

Keywords: Continuous reactor; Carbon dioxide; Absorption; Chemical desorption (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221026037
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:239:y:2022:i:pd:s0360544221026037

DOI: 10.1016/j.energy.2021.122354

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().