Absorption Performance of CO2 in p-Xylylenediamine Solution: Experimental Measurement and Modeling Using Response Surface Methodology

Document Type : Research Paper

Authors

Department of chemical engineering, faculty of engineering, arak university, iran

Abstract

In this paper, the possibility of use of p-Xylylenediamine (PXDA) as a new amine in CO2 absorption process is inspected. Also, data regarding CO2 solubility in PXDA at pressures of 8-500 kPa, concentrations of 2 to 5 mol/L and temperatures of 313 to 353 K were obtained by experiment. The response surface methodology (RSM) was used to model CO2 solubility in amine solution. Moreover, the results illustrated the good accuracy of the mode (R2=0.9708). The 3D charts obtained from the model have shown that CO2 loading has an inverse relation with temperature and concentration and a direct relation with pressure. The simultaneous effect of temperature and pressure on CO2 loading indicates that, at low pressures, an increase in temperature has limited impact on CO2 loading, but at higher pressures, this effect is more pronounced. For ability test of PXDA in absorption of CO2, this solution compares with MEA. Finally, the results indicate that PXDA in both concentrations have more 45% CO2 loading, 44% absorption rate, 50% net cyclic capacity, and about 35% further resistance again oxygen.
 

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References

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Journal of Petroleum Research
Volume 29, 1-98 - Serial Number 104
May and June 2019
Pages 135-145

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