SYSTEM TO PROTECT PROCESS HEATER CASING FROM CORROSION

• Main Authors: O'SULLIVAN, THOMAS F, KORWIN, PAUL
• Format: Patent
• Language: English; French
• Published: 21.08.1979
• Subjects: BLASTING; CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; VENTILATING; WEAPONS

A PROCESS HEATER BURNING HIGH SULFUR FUELS 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