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Separation of NH3/CO2 from melamine tail gas with ionic liquid: Process evaluation and thermodynamic properties modelling
Liu, Xinyan1; Chen, Yuqiu2; Zeng, Shaojuan3; Zhang, Xiangping3,4; Liang, Xiaodong2; Gani, Rafiqul5; Kontogeorgis, Georgios M.2
2021-11-01
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume274Pages:13
AbstractMelamine, as a typical chemical intermediate, is widely applied in the plastics and coatings industry. However, its synthesis process releases large amounts of NH3 and CO2 gas mixtures. A tail gas treatment is therefore a necessary process followed by its production steps. The traditional separation technology for tail gas treatment is water scrubbing for NH3 absorption, but this option suffers from high energy consumption and lots of NH3containing waste water. In this work, a novel ionic liquid (IL)-based solvent, is proposed for the separation of NH3/CO2 mixtures from melamine tail gas. As models for prediction of solubility of NH3 in ionic liquids are not available, first the UNIFAC-IL model is adopted and extended to the NH3-IL systems based on available measured data together with other Group Contribution-based pure component property models. Then, a systematic computer-aided IL design for NH3/CO2 separation is performed by formulating and solving a mixed-integer nonlinear programming problem. Considering NH3 solubility, NH3/CO2 selectivity and feasibility for industrial application as selection criteria, a hydroxyl-functionalized imidazolium-based IL is found to be optimal. Based on the established thermodynamic models, both the IL-based process and a traditional water scrubbing process for NH3/CO2 separation are simulated and evaluated in terms of energy consumption, economic analysis and net CO2 emission under the same NH3 recovery. The simulation results show that compared with the traditional processes, the IL-based process represents a 45%, 35% and 19% reduction in overall equivalent energy, separation cost and net CO2 emission, respectively.
KeywordIonic liquids Thermodynamic model Process evaluation
DOI10.1016/j.seppur.2021.119007
Language英语
WOS KeywordCOMPUTER-AIDED-DESIGN ; CO2 CAPTURE ; UNIFAC MODEL ; COSMO-RS ; NRTL-NRF ; AMMONIA ; EQUILIBRIA ; ABSORPTION ; PREDICTION ; SOLUBILITIES
Funding ProjectNational Key R&D Program of China[2020YFA0710200] ; Key Program of National Natural Science Foundation of China[21838010] ; International (Regional) Cooperation and Exchange of the National Natural Science Foundation of China[21961160744] ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China[21921005] ; Hebei Natural Science Foundation[B2019103011] ; Institute of Process Engineering Chinese Academy of Sciences ; Department of Chemical and Biochemical Engineering in Technical University of Denmark ; Scientific Research Foundation from Wuhan University of Science and Technology
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key R&D Program of China ; Key Program of National Natural Science Foundation of China ; International (Regional) Cooperation and Exchange of the National Natural Science Foundation of China ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China ; Hebei Natural Science Foundation ; Institute of Process Engineering Chinese Academy of Sciences ; Department of Chemical and Biochemical Engineering in Technical University of Denmark ; Scientific Research Foundation from Wuhan University of Science and Technology
WOS IDWOS:000668912400009
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49296
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Xiangping
Affiliation1.Wuhan Univ Sci & Technol, Dept Chem & Chem Engn, Wuhan 430081, Peoples R China
2.Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark
3.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
5.PSE SPEED, Skyttemosen 6, DK-3450 Allerod, Denmark
Recommended Citation
GB/T 7714
Liu, Xinyan,Chen, Yuqiu,Zeng, Shaojuan,et al. Separation of NH3/CO2 from melamine tail gas with ionic liquid: Process evaluation and thermodynamic properties modelling[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,274:13.
APA Liu, Xinyan.,Chen, Yuqiu.,Zeng, Shaojuan.,Zhang, Xiangping.,Liang, Xiaodong.,...&Kontogeorgis, Georgios M..(2021).Separation of NH3/CO2 from melamine tail gas with ionic liquid: Process evaluation and thermodynamic properties modelling.SEPARATION AND PURIFICATION TECHNOLOGY,274,13.
MLA Liu, Xinyan,et al."Separation of NH3/CO2 from melamine tail gas with ionic liquid: Process evaluation and thermodynamic properties modelling".SEPARATION AND PURIFICATION TECHNOLOGY 274(2021):13.
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