| Popis: |
Due to many invitations for stopping use tetraethyl lead (TEL) and methyl tertiary butyl ether (MTBE) as an octane enhancer because of the harmful effects on the environment and human health. An adsorption process was used to separate the low octane number components (normal paraffins) from hydrogenated light naphtha by using a molecular sieve (5A) in a fixed bed column. The study was performed in the vapor phase with changing many parameters such as pressure (1,1.6) bar, temperature (150,180,210) °C, and feed space velocity (1.384, 2.769, 3.095) hr−1. After doing many experiments, it is concluded that the best conditions for normal paraffin separation from light naphtha were at operating pressure (1.6 bar), temperature (180 °C), and feed space velocity (1.384 hr−1). The highest value of normal paraffins percentage removal reached to (92.36%), this led to increment in the research octane number by (23.44) from (60.5) to the (83.94). |
