Ethylene furnace radiant coil decoking method

Details Ethylene furnace radiant coil decoking method Ethylene furnace radiant coil decoking method

C - Chemistry, Metallurgy

10

G

C10G 9/16 (2006.01)

Patent

CA 2686738

Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of coke in the radiant coils. Air flow rates, steam flow rates and coil outlet temperatures are controlled during the decoking process to prevent tube damage, minimize decoking time and maximize coke removal.

L'invention concerne des procédés de décokage des serpentins radiants dans une usine de production d'éthylène par craquage. Le procédé de décokage est contrôlé en surveillant la température de sortie du serpentin afin de contrôler la vitesse de combustion du coke dans les serpentins radiants. Les débits d'air, les débits de vapeur et les températures de sortie de serpentin sont contrôlés au cours du procédé de décokage pour éviter d'endommager les tuyaux, minimiser le temps de décokage et maximiser l'élimination du coke.

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