Abstract

The technology of separating normal paraffins from naphtha through adsorption using 5A molecular sieves was studied. The separation efficiency of the normal paraffins was above 99.99%. Using the desorption oil as the feedstock of steam cracking, the ethylene yield increased from 29.7–35.0% to 41.4–49.2% compared to that of the naphtha. The research octane number of the raffinate oil reached more than 85 units with an increase of 20 units compared to that of naphtha.

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