Abstract: Using C₄ fraction as raw material, hydrogenation experiment was carried out in a small fixed bed unit with self-made catalyst. The results showed that the olefin mass fraction in hydrogenated C₄ fraction decreased to 2.32%, the total yield of ethylene, propylene and butadiene reached 48.16%-50.94% after simulated evaluation of hydrogenated C₄ pyrolysis. A simple economic analysis of hydrogenated C₄ was carried out. The results indicated that in terms of the yield of three kinds of olefins, one ton hydrogenated C₄ was equivalent to 0.917t ethylene feedstock, indicating that the hydrogenated C₄ is a better feedstock for ethylene production.

Key words: C₄ hydrogenation, steam cracking, economic analysis, light olefins