Method and system for controlling multi-zone reheating furnaces

Details Method and system for controlling multi-zone reheating furnaces Method and system for controlling multi-zone reheating furnaces

C - Chemistry, Metallurgy

21

D

38/19

C21D 11/00 (2006.01) C21D 9/00 (2006.01) F27B 9/40 (2006.01) F27D 19/00 (2006.01)

Patent

CA 1175649

NA-6658 METHOD AND SYSTEM FOR CONTROLLING MULTI-ZONE REHEATING FURNACES Abstract of the Disclosure A method and system is provided for controlling a re- heating furnace having entrance and discharge ends, a pre- heating zone at the entrance end, and heating and soaking zones sequentially adjacent the preheating zone in the direction toward the discharge end, and an exhaust gas flue at the entrance end. The method and control system provides for obtaining an optimum temperature profile through the preheating and heating zones with minimum fuel consumption in connection with operation of the preheating zone by controll- ing the fuel supply to the preheating zone in accordance with the rate or quantity of fuel flow to the heating zone and the temperature of the exhaust gas from the furnace.

403071

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