System to protect process heater casing from corrosion

Details System to protect process heater casing from corrosion System to protect process heater casing from corrosion

F - Mech Eng,Light,Heat,Weapons

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F22B 37/00 (2006.01) F23M 5/00 (2006.01) F23M 5/08 (2006.01)

Patent

CA 1060733

A PROCESS HEATER BURNING HIGH SULFUR FUELS ABSTRACT The invention relates to a direct fired heater which burns high sulfur fuels. The heater of the invention is provided with a wall comprising an inner casing lined internally with refractory material, an outer casing spaced from the inner casing to provide air space therebetween, and means for controlling the rate of air flow through the air space. Proper selection of the refractory material and proper control of the rate of air flow make it possible to maintain the temperature of the inner casing above the dew points of sulfur oxides for any ambient condition. A plurality of horizontal baffles extend from the inner casing outward into the air space to inhibit re-circulation of air in the air space. i

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