Process for manufacturing olefinic hydrocarbons with respectively two and three carbon atoms per molecule

摘要

The present process has for object the manufacture of olefinic hydrocarbons with respectively 2 and 3 carbon atoms per molecule. This object is attained by treating a charge selected from such cuts as light or heavy naphthas, kerosenes and light gas oils of distillation point lower than 360 DEG C. The cut is subjected to hydrogenolysis and the resulting C2 and C3 hydrocarbons are fed to a steam-cracking plant, while the C4+ hydrocarbons are subjected to further hydrogenolysis.