Patent ID: 8647500
Filing Date: 2014-02-11
Classification: C10G,Y02P

Abstract:
1. A method for making a diesel fuel product, comprising: contacting a mineral feedstock having a sulfur content of at least about 500 wppm with a hydrotreating catalyst under effective hydrotreating conditions in a hydrotreatment reactor that includes a continuous gas phase to make a hydrotreated effluent; separating the hydrotreated effluent into at least a first diesel boiling range product, a hydrotreated liquid slip stream, and a gas phase product, the diesel boiling range product and the hydrotreated liquid slip stream having a sulfur content of about 50 wppm or less; mixing the hydrotreated liquid slip stream with a recycled product stream, and a biocomponent feed having an oxygen content of at least about 8 wt %, to form a mixed input stream; deoxygenating the mixed input stream under effective deoxygenation conditions in a deoxygenation stage having a continuous liquid phase environment to form a second diesel boiling range product and the recycled product stream, the mixed input stream having a first hydrogen need in the deoxygenation; removing a portion of the mixed input stream from the deoxygenation stage; dissolving hydrogen in the removed portion; and passing the removed portion containing the dissolved hydrogen back into the deoxygenation stage; and adjusting a ratio of the hydrotreated liquid slip stream and the biocomponent feed in the mixed input stream while maintaining a second hydrogen need of the mixed input stream in the deoxygenation to within about 5% of the first hydrogen need.