At what temperature does coking residue start to react? ……
Thread Content
At what temperature does coking residue start to react? At what temperature is the reaction most intense?
Does this have a fixed temperature? Operation begins as soon as the temperature at the furnace outlet reaches 420, at which point residue oil is introduced. Generally, the outlet temperature of the furnace is controlled between 480 and 500. If the temperature is too high, the reaction will definitely be intense, but coking will become severe as well
The temperature of the oil is 420 degrees; at the furnace outlet it is 490–495 degrees, and at the inlet of the coke tower it should not exceed 510 degrees to prevent coking
There should be a noticeable response at 360 degrees
Cracking may occur when the oil is heated to 246 degrees; the most intense reactions in residue oil take place starting at 420 degrees, with the intensity increasing as the temperature rises.
This is mainly related to the API degree of the residue; the heavier the residue, the more resin and asphaltenes it contains, and the lower the reaction temperature required – condensation reactions may occur at around 400 degrees. The lighter the residue, the opposite is true. It is generally believed that the pyrolytic condensation reaction occurs at 420 to 500 degrees, so gas injection is necessary at 440 degrees to prevent premature coking