Process for the production of jet-range hydrocarbons by oligomerization of renewable olefins having 3 to 8 carbons
AssigneeUop LLC
InventorsCharles P. Luebke, Geoffrey W. Fichtl, Dana K. Sullivan
Life of this patent
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Abstract
Processes for producing jet-range hydrocarbons includes splitting a renewable olefin feedstock comprising C3 to C8 olefins into a plurality of streams and passing each stream to an oligomerization reactor containing a zeolite catalyst to produce an oligomerized effluent. The reactors may be arranged in series, such that an oligomerized effluent comprises a diluent for a downstream reactor. The net oligomerized effluent may be separated and a heavy olefin stream comprising C8+ olefins may be hydrogenated and separated to provide a distillate range hydrocarbon product.
Claims11
A process for producing distillate range hydrocarbons comprising:
- splitting a renewable olefin feedstock comprising C3 to C8 olefins into at least a first olefin feedstock stream and a second olefin feedstock stream wherein the first olefin feedstock stream and the second olefin feedstock stream comprise different mass flow amounts;
- diluting the first olefin feedstock stream to provide a diluted first olefin feedstock stream;
- oligomerizing the diluted first olefin feedstock stream in a first oligomerization reactor containing a first non-selectivated MTT zeolite catalyst extrudate and being operated under conditions comprising a temperature of from 160 to 260° C. to produce a first oligomerized effluent;
- diluting the second olefin feedstock stream with the first oligomerized effluent to provide a diluted second olefin feedstock stream;
- oligomerizing the diluted second olefin feedstock stream in a second oligomerization reactor containing a second non-selectivated MTT zeolite catalyst extrudate and being operated under conditions comprising a temperature of from 160 to 260° C. to produce a second oligomerized effluent;
- and
- separating distillate range olefins from the second oligomerized effluent.
A process for producing distillate range hydrocarbons comprising:
- splitting a renewable olefin feedstock comprising C3 to C8 olefins into at least a first olefin feedstock stream and a second olefin feedstock stream wherein the first olefin feedstock stream and the second olefin feedstock stream comprise different mass flow amounts;
- diluting the first olefin feedstock stream to provide a diluted first olefin feedstock stream;
- passing the diluted first olefin feedstock stream to a first oligomerization reactor containing a non-selectivated MTT zeolite catalyst extrudate and being operated under conditions comprising a temperature of from 160 to 260° C. to produce a first oligomerized effluent;
- diluting the second olefin feedstock stream with the first oligomerized effluent to provide a diluted second olefin feedstock stream;
- passing the diluted second olefin feedstock stream to a second oligomerization reactor containing the non-selectivated MTT zeolite catalyst extrudate and being operated under conditions comprising a temperature of from 160 to 260° C. to produce a second oligomerized effluent;
- and
- hydrogenating at least a portion of the second oligomerized effluent in a hydrogenation zone to provide a jet range fuel stream.
Dependencies are inferred from the claim text.