Thermodynamic modeling and process simulation for CO2 absorption into aqueous monoethanolamine solution

被引：0
|
作者：
Li, Han [1 ]
Chen, Jian [1 ]
机构：
[1] State Key Laboratory of Chemical Engineering, Tsinghua University
来源：
Chen, J. (cj-dce@tsinghua.edu.cn) | 1600年 / Materials China卷 / 65期
关键词：
Absorption; Carbon dioxide; Monoethanolamine; Simulation; Thermodynamics;
D O I：
10.3969/j.issn.0438-1157.2014.01.006
中图分类号：
学科分类号：
摘要：
A thermodynamic model for monoethanolamine (MEA)-H2O-CO2 was built using the electrolyte non-random two-liquid model. Over twenty parameters were regressed from the vapor pressure and heat capacity data for MEA, data of vapor-liquid equilibrium, heat capacity and heat of mixing for MEA-H2O, and CO2 solubility data for MEA-H2O-CO2 over a wide range of temperature, concentration and CO2 loading. The model was validated by the NMR speciation data and then used to build a process simulation for CO2 absorption/desorption into 30%(mass) MEA. The simulation results match the pilot plant data in literature. For 30%(mass) MEA solution, when the CO2 removal rate in the absorber is 90%, the reboiler heat duty is the minimum by changing the mass flow ratio of liquid to gas in the absorber. The minimum reboiler heat duty is 3.64 GJ·(t CO2)-1, when the ratio is 2. © All Rights Reserved.
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页码：47 / 54
页数：7
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