Patent ID: 9663416
Date: 2017-05-30
CPC Classifications: B01J,C07C,C10G,Y02P

Claim:
1. A process for conversion of an ethylene-containing feedstock into distillate range hydrocarbons for fuels and fuel blend stocks, the method comprising the steps of: oligomerizing ethylene in the ethylene-containing feedstock over a metal heterogeneous catalyst at a temperature from about 40° C. to 200° C. to form a water-free first oligomerization product in a first reaction stage, wherein the first oligomerization product contains a majority concentration of mixed olefins with a carbon number from about C4 to about C8; and oligomerizing the mixed olefins in the water-free first oligomerization product over a non-metal heterogeneous catalyst at a temperature from greater than 200° C. to about 350° C. to form a second oligomerization product in a subsequent reaction stage, wherein the second oligomerization product contains mixed linear olefins and branched olefins with a carbon number from about C8 to about C23 in a yield of greater than or equal to 20% suitable for production of selected hydrocarbon fuels and fuel blend stocks.