Improved separation and utilization of light naphtha stock by adsorption process

Autor: Minchao Feng, Xiaolong Zhou, Wei Hu, Wenyan Wang, Chenglie Li
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Adsorption Science & Technology, Vol 36 (2018)
Druh dokumentu: article
ISSN: 0263-6174
2048-4038
02636174
DOI: 10.1177/0263617417721571
Popis: An integrated process for separation and utilization of light naphtha stock in refineries is discussed in this paper. Normal paraffins present in light naphtha streams are first separated from nonnormal paraffins by adsorption technology. The adsorbed n -paraffins are recovered and can be used as an ideal feedstock for steam cracking, meanwhile iso-pentane or iso-pentane and iso-hexane blends are recovered by rectification of the nonadsorbed effluent and used as necessary components for modern gasoline or aviation gasoline products. From the results for a model feedstock, an isothermal adsorption and purging desorption approach is selected. Optimum parameters consist of adsorption and desorption duration of 30 min at 180℃ for each, nitrogen stream LHSV of 240 h −1 in the desorption step, the dynamic capacity of the adsorbent reaches 0.042 g/g.
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