Slurry reactor system for upgrading feedstock

A slurry reactor system, comprising:

• a slurry reactor configured to convert, under slurry hydroconversion conditions, a slurry reactor content flowing upwards and comprising a feedstock comprising one or more of fats, oils and greases, a slurry hydroconversion catalyst and a hydrogen stream to a slurry hydroconversion effluent comprising a slurry phase effluent comprising catalyst particles and liquid product and a vapor phase effluent comprising a hydroconversion product;
• and
• a separation unit internal to the slurry reactor, the separation unit being configured to separate at least a portion of the vapor phase effluent from the slurry hydroconversion effluent to produce a mixture of vapor and the slurry hydroconversion effluent having a reduced vapor phase content;
• wherein the separation unit is configured to use a pump to recirculate the mixture of vapor and the slurry hydroconversion effluent having a reduced vapor phase content flowing downwards in the slurry reactor to be combined with the slurry reactor content;
• wherein the slurry reactor is further configured to provide backmixing to fluidize the slurry hydroconversion catalyst to maintain a substantially homogeneous slurry reactor content, and a substantially isothermal temperature profile in the slurry reactor;
• and
• wherein at least about 60% of the feedstock is converted into the vapor phase effluent.