Cohydrocracking of ethane and propane
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Dear seniors, I have a question for everyone. In a furnace for the co-cracking of ethane and propane, with the total feed amount remaining constant, if the propane feed is reduced while the ethane feed is increased, and if the position of the FG manual valve remains unchanged, will the COT decrease or increase? I also know that it takes more energy to break the carbon bonds in ethane, but propane is heavier than ethane. So, does the fuel consumption increase or decrease with the addition of propane?
Do you mean molar mass when you say weight? For propane and ethane of the same weight, the amount of substance of ethane is greater than that of propane; moreover, it is more difficult to break the bonds in ethane. Therefore, more heat is required for ethane of the same mass, and increasing the outlet temperature of the ethane furnace will cause it to drop.
You are right. Thank you for the guidance.