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Technical-energy-economic multi-objective optimization of ionic liquid-based CO2 /NH3 separation from melamine tail gas
  • +5
  • Yuanmeng Duan,
  • Guoxiong Zhan,
  • Sensen Shi,
  • Shaojuan Zeng,
  • Haifeng Dong,
  • Jens Abildskov,
  • Jakob Huusom,
  • Xiangping Zhang
Yuanmeng Duan
Technical University of Denmark

Corresponding Author:[email protected]

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Guoxiong Zhan
Institute of Process Engineering Chinese Academy of Sciences
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Sensen Shi
Institute of Process Engineering Chinese Academy of Sciences
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Shaojuan Zeng
Institute of Process Engineering, Chinese Academy of Sciences
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Haifeng Dong
Institute of Process Engineering Chinese Academy of Sciences
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Jens Abildskov
Technical University of Denmark
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Jakob Huusom
Technical University of Denmark
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Xiangping Zhang
Institute of Process Engineering Chinese Academy of Sciences
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Abstract

Melamine production is known to produce tail gas with a significant amount of CO2 and NH3. Ionic liquid as a green and excellent solvent is to be used for separating melamine tail gas. This paper aims to present a detailed multi-objective optimization (MOO) for the CO2/NH3 separation of the tail gas by ionic liquid (IL) in technical-energy-economic evaluation. Functional IL ([Bim][NTf2]) was selected, the ionic liquid-based process was designed, and process performances were investigated by process simulation and optimization. According to the optimization results, specific cases with different objective functions were chosen, and the relationship between key parameters was analyzed. The results showed that the ionic liquid-based technology could realize a better performance regarding the technical-energy-economic than the base case. Deeper analyses with the influence of operation parameters with evaluation index were carried out, thus providing support to the industrial application of the new separation technology.