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Thermodynamic modeling for the carbonate system K-HCO3-CO3 in alkanolamine solutions: An extended application for CO2 scrubbing
Wang, Qiaoxin1,2; Li, Zhibao1
2020-03-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume384Pages:10
AbstractThe K2CO3 slurry-based, CO2 absorption technology in amines involves in-depth analysis of chemical equilibrium for all three phases. However, the reported studies regarding solubility and thermodynamics modeling of the solid-liquid system: K-CO3-HCO3 in alkanolamine solutions are limited. We first performed vapor-liquid equilibrium calculation to study the absorption profile of CO2 in monoethanolamine (MEA)/diethanolamine (DEA) solutions using OLI Studio Stream Analyzer, results were in good agreement with literature data. We further applied the dissolution method to measure the solubility of K2CO3 and KHCO3 in the aqueous alkanolamine solution from 283 to 353 K, P = 0.1 MPa. A chemical model was developed for the purpose of conducing thermodynamic analysis by the regression of solubility data via the mixed-solvent-electrolyte, activity coefficient model. The relative deviations are within 5% for each solid-liquid system after reparameterization. Tuning the newly-regressed parameters allowed for a better prediction of solubility, they also come vital in evaluating the absorption performance of CO2 in quaternary systems, which are made available to aid in process modeling.
KeywordAlkanolamine Solid-liquid equilibrium Modeling Solubility Thermodynamics
DOI10.1016/j.cej.2019.123250
Language英语
WOS KeywordVAPOR-LIQUID-EQUILIBRIA ; AQUEOUS MONOETHANOLAMINE ; MASS-TRANSFER ; POWER-PLANTS ; SOLUBILITY ; CAPTURE ; ABSORPTION ; MEA ; DIETHANOLAMINE ; MIXTURES
Funding ProjectNational Science Foundation of China[21776279] ; National Science Foundation of China[21978290]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Science Foundation of China
WOS IDWOS:000504405000148
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38575
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Zhibao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Dept Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Qiaoxin,Li, Zhibao. Thermodynamic modeling for the carbonate system K-HCO3-CO3 in alkanolamine solutions: An extended application for CO2 scrubbing[J]. CHEMICAL ENGINEERING JOURNAL,2020,384:10.
APA Wang, Qiaoxin,&Li, Zhibao.(2020).Thermodynamic modeling for the carbonate system K-HCO3-CO3 in alkanolamine solutions: An extended application for CO2 scrubbing.CHEMICAL ENGINEERING JOURNAL,384,10.
MLA Wang, Qiaoxin,et al."Thermodynamic modeling for the carbonate system K-HCO3-CO3 in alkanolamine solutions: An extended application for CO2 scrubbing".CHEMICAL ENGINEERING JOURNAL 384(2020):10.
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