Why is a coking radiation pump a high-pressure pump?
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I read that coking radiation pumps are multi-stage high-temperature pumps, with an outlet pressure of generally over 2 Mpa. I’m not quite sure why such a high pressure is needed. The fluid coming out of the radiation pump goes to the distillation tower via the coking furnace, and the pressures in those subsequent systems are low, around 0.2 Mpa. It seems to me that a radiation pump doesn’t require such a high pressure. Please let me know if you know anything about this. Thank you
Coking radiation pumps are considered high-pressure pumps because they need to overcome various resistances in the pipes and equipment, as well as to ensure smooth flow of the medium throughout the entire coking process. Although the pressure in the distillation tower is relatively low, the medium encounters frictional and other resistances as it moves from the radiation pump to the distillation tower, and sufficient pressure is required to drive its flow. Furthermore, high pressure also helps to improve the heat transfer efficiency and flow stability of the medium. .
The key aspect of delayed coking is the word “delayed”
I don’t think it works; the outlet pressure of the pump, even when operated at variable frequency, remains very low
Because the air is injected at three points, and it’s medium-pressure steam; the low pressure isn’t sufficient to exert enough force
The radiation pump is the heart of a coking plant; it needs to generate very high pressure in order to overcome pipeline resistance and the injection of medium-pressure gas in the three stages, as well as to account for the height of the coke tower.
The main issue is the high resistance in the furnace tubes and preheating section
First, the coking furnace tubes are long and have many elbows, resulting in high resistance. Secondly, it is necessary to ensure the flow rate of the oil inside the furnace tubes; the steam injection at the three points is at medium pressure, so the pressure entering the furnace must be high.