Natural draft combustion zone optimizing method and apparatus

Details Natural draft combustion zone optimizing method and apparatus Natural draft combustion zone optimizing method and apparatus

F - Mech Eng,Light,Heat,Weapons

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341/21

F23N 3/04 (2006.01) F23N 1/10 (2006.01) F23N 5/00 (2006.01) F23N 5/10 (2006.01) F23N 5/18 (2006.01)

Patent

CA 1115810

ABSTRACT OF THE DISCLOSURE Control method and apparatus for optimizing the operation of a natural draft combustion zone through which a conduit containing a process fluid to be heated passes, by decreasing the supply of combustion air until one or more of the following predetermined limiting conditions is reached: maximum CO in the flue gas, minimum O2 in flue gas, minimum draft in the combustion zone, maximum tempera- ture of the outer surface of said conduit, and increase in the rate of fuel addition above a minimum amount. When a limiting condition is reached, the supply of combustion air is increased until the limiting condition is no longer present, and the cycle then repeated.

342030

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