Processes for making C_x-C_yolefins from C₅and C₆paraffins

摘要

Processes for making CX to CY olefins are provided. The processes include reacting a feedstock comprising C5 and C6 olefins under dimerization or oligomerization conditions to provide a dimerization or oligomerization product. The product is separated into a stream comprising unreacted C5 and C6 paraffins, a stream comprising C10 to CX-1 olefins, and a stream comprising CX to CY olefins, wherein X is at least 14 and Y is greater than X and less than or equal to 36.

主权项

1. A process for making CX to CY olefins, the process comprising the steps of:
reacting a feedstock comprising C5 and C6 olefins under dimerization or oligomerization conditions to provide a dimerization or oligomerization product; separating the dimerization or oligomerization product in a separation unit into a stream comprising unreacted C5 and C6 paraffins, a stream comprising C10 to CX-1 olefins, a stream comprising CY+olefins, and a stream comprising CX to CY olefins including olefins having odd numbers of carbons to form a more uniform distribution of olefins, wherein X is at least 14 and Y is greater than X and less than or equal to 36; reacting a first portion of the stream comprising C10 to CX-1 olefins under chain growth conditions to provide a portion of the stream comprising CX to CY olefins, wherein the chain growth conditions include dimerization or oligomerization; and reacting at least a portion of the stream comprising C10 to CX-1 olefins under chain growth conditions to provide the stream comprising CX to CY olefins, wherein chain growth conditions include dimerization or oligomerization; reacting a second portion of the stream comprising C10 to CX-1 olefins and the stream comprising CY+olefins under metathesis conditions to provide a metathesis reaction product and passing the metathesis reaction product to the separation unit.