A new anticoke technology sustains a noncatalytic layer on cracking tubes that reduces coking
For ethylene cracking furnaces, coking deposits severely reduce
yields and shorten the run length. Coking is a side reaction from
thermal cracking; its formation ultimately increases energy
consumption since tube fouling decreases unit heat transfer. Other
side reactions such as carbon monoxide (CO) formation must also be
controlled to maintain process efficiency for downstream sections.
Coke is formed through a complex mechanism that involves mainly
catalytic surface reactions and radical reactions. This has a
negative impact on product yield, energy consumption and run
length. Ethylene producers are always seeking methods to retard
coke formation and extend times between de
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