Patent ID: 9567528
Date: 2017-02-14
CPC Classifications: C10B,C10G,F27B

Claim:
1. A furnace system comprising: at least one lower radiant section comprising a first firebox disposed therein; at least one upper radiant section disposed above the at least one lower radiant section, the at least one upper radiant section comprising a second firebox disposed therein, the at least one upper radiant section and the at least one lower radiant section being controlled independently from each other; at least one convection section disposed above the at least one upper radiant section; an exhaust corridor defined by the first firebox, the second firebox, and the at least one convection section; wherein arrangement of the at least one upper radiant section above the at least one lower radiant section reduces an area required for construction of the furnace system; wherein a residual oil feed is received into the at least one convection section; and wherein a first temperature of the residual oil feed, measured at an outlet of the at least one lower radiant section is substantially equal to a second temperature of the residual oil feed measured at an outlet of the at least one upper radiant section.