METHODS FOR PROCESSING NITROGEN RICH RENEWABLE FEEDSTOCKS

摘要

Processes for producing a fuel from a renewable feedstock which may have more than 60 ppm nitrogen. The renewable feedstock is passed to a deoxygenation zone. A hydrogen stream, preferably formed from a recycled gas, is introduced into the deoxygenation zone at a relatively high rate. The hydrogen introduction may be between 3 to 5 times the rate of hydrogen consumption in the deoxygenation zone. The hydrogen introduction may also be between 6000 to 9000 SCF/BBL. A deoxygenated effluent, comprising less than 1 wppm nitrogen, may be isomerized and separated into one or more product hydrocarbon streams such as a diesel fuel or aviation fuel.

主权项

1. A process for converting a renewable feedstock into a fuel, the process comprising:
deoxygenating a renewable feedstock in the presence of hydrogen in a deoxygenation zone comprising a catalyst and being operated under conditions to provide a deoxygenated effluent; introducing hydrogen to the deoxygenation zone at a rate of between 6000 to 9000 SCF/BBL; and, isomerizing the deoxygenated effluent in an isomerization zone comprising a catalyst and being operated under conditions to improve at least one cold flow property of the deoxygenated effluent in an isomerized effluent.