The Adsorption/Desorption Dynamics Properties of N-Alkanes in Light Naphtha on 5A Zeolites

Abstract:

Self-made JH4 zeoite was characterized by BET, mercury and other methods. The dynamic adsorption capacity of nC5/nC6 in light naphtha on JH4 zeolite fixed bed was investigated. The effect of cyclic purge exhaust composition, which simulate different condensation conditions, on desorption performance of JH4 zeolite bed was studied. The results shows that, the microporous BET specific surface area and pore volume of JH4 zeolite is 710.05 m2/g and 0.32 cm³/g; macropore specific surface area and pore volume is 3.64 m2/g and 0.29 cm³/g, respectively. Under the adsorption conditions of 0.1 MPa, 165 °C, adsorption capacity of n-pentane and n-hexane in light naphtha on JH4 zeolite reaches, 7.24 g/100g_ads and 3.11 g/100g_ads respectively.If the content of pentane and hexane achieves 3.68% and 0.21% in nitrogen purge gas, total desorption amount of JH4 zeolite is 2.07 g/100g_ads, falling 60.19% than that of pure N₂ purge.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 2643-2646
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.2643
• Online since: September 2013
• Authors: Xiang Ji, Qing Sheng Zhang, Qun Cui, Hai Yan Wang
• Keywords: 5A Zeolites, Isoparaffin, Light Naphtha, Recycling the Purge Exhaust

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