Why can failing to completely remove the new tower oil lead to tower flooding?
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I would like to ask why, during tower replacement in delayed coking, if the oil from the new tower is not completely removed, it can lead to flooding of the coke tower
The new tower is generally preheated so that the temperature at its bottom exceeds 320 degrees. Under the operating pressure of the coke tower, most of the oil at the bottom of the tower after preheating consists of wax oil components. If these components are not removed completely, when oil and gas at a temperature of nearly 500 degrees enter the tower after switching to it, the wax oil components will vaporize in large quantities, which can lead to tower overpressure or the activation of safety valves.