Inorganic Chemicals Industry >
Process simulation of carbon dioxide capture from coal-firing flue gas by ethanolamine
Received date: 2021-12-21
Online published: 2022-08-26
The organic amine method is one of the most effective CO2 capturing techniques for coal-fired flue gas.Aspen plus was used to simulate the process of flue gas CO2 capture by ethanolamine（MEA）.Firstly，separate absorption tower and regeneration tower were simulated，and then the comprehensive absorption-desorption simulation was carried out based on the convergence of the separate system model.The flue gas flow rate was 8.22 m3/min and the molar fraction of CO2 was 0.18，the flow rate of MEA was 2 311.3 kg/h and the molar fraction of MEA was 0.12.The simulation results of CO2 capture by MEA were as follows: the CO2 removal rate was 69.3%，the CO2 mole fraction in the purifing gas was 5.33×10-2，the CO2 mole fraction of regeneration tower top was 0.956，which basically met the design requirements，providing a basis for further research on CO2 absorption by amine method.
Key words： ethanolamine; CO2; Aspen plus; simulation; coal-firing flue gas
Yaping ZHANG . Process simulation of carbon dioxide capture from coal-firing flue gas by ethanolamine[J]. Inorganic Chemicals Industry, 2022 , 54(8) : 96 -100 . DOI: 10.19964/j.issn.1006-4990.2021-0763
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