Production of propene and 1-butene

摘要

Production of propene and 1-butene comprises reading 2-pentene with ethene in the presence of a metathesis catalyst containing a VIb, VIIb or VIIIb metal. An apparatus for carrying out the process is also claimed comprising a metathesis reactor (R1) to react 1-butene with 2-butene, connected to a distillation column (D1) to separate 2-3C light boiling, 4C middle boiling and 5C high boiling phases. The light boiling outlet loads to a column (D3) for separating ethene and propene, the middle boiling outlet leads to the reactor (R1) or is discharged, and the high boiling outlet leads to a reactor (R2) for reacting 2-pentene with ethene, whose outlet leads into a column (D1). The ethene outlet from the column (D3) and an ethene feed are led to the reactor (R2).