COMBUSTION AIR PREHEAT OPTIMIZATION SYSTEM IN AN SMR

摘要

A process for producing synthesis gas from a furnace, the furnace including a combustion air stream, a convective section and a reformer flue gas stream is presented. The furnace may additionally include a process cooling section and one or several boiler feed water stream. This process includes passing the combustion air stream through a preheat exchanger system in the convective section to preheat the combustion air stream in indirect heat exchange with the reformer flue gas, wherein the temperature of the preheated combustion air is between about 200°F and about 400°F. The temperature of the preheated combustion air may be between about 225°F and about 350°F. The temperature of the preheated combustion air may be between about 250°F and about 325°F. The process may further include passing the boiler feed water stream through heating coils in the process cooling section and the convective section.