Reg Synthetic Fuels, LLC

Syntroleum Corporation

Tsungani Record

H Lynn Tomlinson

Ramin Abhari

William Manning

Peter Zdenek Havlik

Gary Roth

William Schaefer

A method is provided involving reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, where the reactor feed includes a bio-oil feed and a hydrocarbon diluent; and the step of reducing the pressure drop comprises stopping or substantially reducing the bio-oil feed supplied to the reactor and supplying the hydrocarbon diluent to the reactor with a mass flux of at least about 1,000 lb/hr/ft.

Reducing pressure drop buildup in bio-oil hydroprocessing reactors

The present invention is directed to a cooling system for removing heat from a Fischer-Tropsch (F-T) slurry reactor. The cooling system including a downcomer disposed within the F-T reactor to deliver a coolant downward through the F-T reactor at a predetermined velocity. The downcomer and the pressure of the introduced coolant cooperate to increase the coolant velocity, thereby maintaining the coolant in the substantially liquid phase in the downcomer. The cooling system further includes a plenum connected to the downcomer, wherein the coolant remains in the substantially liquid phase. Additionally, the cooling system includes at least one riser extending upward from the plenum, wherein a portion of the coolant vaporizes to provide a boiling heat transfer surface on the at least one riser.

Process for increasing the efficiency of heat removal from a Fischer-Tropsch slurry reactor

The present invention is directed to a cooling system for removing heat from a Fischer-Tropsch (F-T) slurry reactor. The cooling system including at least one downcomer having an upper portion, a lower portion, and a diameter; the at least one downcomer disposed within the F-T reactor to deliver a coolant downward through the F-T reactor at a predetermined velocity, the at least one downcomer extending a length within the F-T reactor wherein the coolant is introduced into the upper portion of the at least one downcomer in a substantially liquid phase; the diameter of the at least one downcomer and the pressure of the introduced coolant cooperate to increase the coolant velocity thereby generating backpressure in the at least one downcomer to maintain the coolant in the substantially liquid phase along the length of the at least one downcomer. The cooling system further including a plenum connected to the lower portion of the at least one downcomer; the plenum in fluid communication with the at least one downcomer wherein the coolant remains in the substantially liquid phase. Additionally, the cooling system includes at least one riser having a length and extending upward from the plenum; the at least one riser in fluid communication with the plenum wherein a portion of the coolant vaporizes to provide a boiling heat transfer surface on the at least one riser.

Growing community of inventors

Sapulpa, OK, United States of America

Tsungani Record