METHODS AND APPARATUSES FOR PROCESSING RENEWABLE FEEDSTOCKS

摘要

Embodiments of methods and apparatuses for processing a renewable feedstock are provided herein. In one example, a method comprises dividing a H2-rich make-up stream into a first H2-rich portion and a second H2-rich portion. The second H2-rich portion has a lower mass flow rate than the first H2-rich portion. The renewable feedstock is deoxygenated in the presence of the first H2-rich portion at hydroprocessing conditions effective to form a deoxygenating reaction zone effluent that contains normal paraffins. At least a portion of the deoxygenating reaction zone effluent is isomerized in the presence of the second H2-rich portion at isomerization conditions effective to form an isomerization reaction zone effluent that contains branched paraffin. The isomerization conditions include a first hydrogen partial pressure of about 4,140 kPa gauge or less.

主权项

1. A method for processing a renewable feedstock, the method comprising the steps of:
dividing a H2-rich make-up stream into a first H2-rich portion and a second H2-rich portion that has a lower mass flow rate than the first H2-rich portion; deoxygenating the renewable feedstock in the presence of the first H2-rich portion at hydroprocessing conditions effective to form a deoxygenating reaction zone effluent that contains normal paraffins; and isomerizing at least a portion of the deoxygenating reaction zone effluent in the presence of the second H2-rich portion at isomerization conditions effective to form an isomerization reaction zone effluent that contains branched paraffin, wherein the isomerization conditions include a first hydrogen partial pressure of about 4,140 kPa gauge or less.