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What are the temperatures at the upper and lower sections of the desuperheating section in a catalytic fractionation tower?

2017-12-21View Original

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What are the temperatures at the upper and lower sections of the desuperheating section in a catalytic cracking fractionator? What type of tray is used in the desuperheating section? How is the coking situation?
Reply #22017-12-21
The herringbone baffle at the bottom of the distillation tower is known as the superheating removal section; its function is to remove excess heat from the overheated oil and gas emerging from the reaction, as well as to wash away the catalyst powder carried by the oil and gas, thereby preventing the catalyst from clogging the upper tower trays. The temperature at this baffle is controlled by the flow rate of the material returning upward through the tower. Above our triangular baffle are 7 layers of tongue-shaped trays, with floating valve trays above them all.
Reply #32017-12-22
Around 300 degrees I guess; it has a V-shaped baffle, and the catalyst is washed through two separate feed paths at the top and bottom, so coking is not a major issue.
Reply #42017-12-22
Around 300 degrees I guess; it has a V-shaped baffle, and the catalyst is washed through two separate feed paths at the top and bottom, so coking is not a major issue.
Reply #52017-12-22
Thank you. What exactly is three hundred degrees? Please advise
Reply #62017-12-22
I would like to ask what the situation is regarding coking – is it still okay?
Reply #72017-12-22
May I ask if the temperature in the feed section exceeds 500 degrees?
Reply #82017-12-23
The feed temperature of the oil and gas at the bottom of the fractionation tower is definitely above 500 degrees. The purpose of the superheating removal section is to remove excess heat and to wash the catalyst contained within it
Reply #92017-12-23
I would like to know about the temperature changes after high-temperature feed enters the tower; that is, what is the difference in temperature between the upper and lower sections of the superheating removal section
Reply #102017-12-23
It’s basically about 200 degrees short here!

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