Coke tower preheating issue
Thread Content
Is it true that the longer the preheating time in the coke tower, the better? Is it true that the slower the opening rate of the preheating valve, the more beneficial it is for stable production and equipment protection?
How long is the optimal preheating time to maintain, in terms of energy consumption, stable production, and equipment protection?
Dependent on the coking cycle, the preheating valve should operate at a slow speed at the beginning; as pressure balance between the old and new towers is achieved later on, it can be opened more gradually. The preheating time must ensure that the desired preheating temperature is reached before switching towers. The slow preheating should not affect Cheta
What I mean is, as long as it doesn’t affect Cheta, is it better to have a slower preheating process?
Everything has a limit; it’s not true that the slower, the better
That’s a bit too general. Be more specific, moderator – how long is an appropriate duration?
The preheating time is too long, which wastes oil and gas; there is also wear on the oil slinging pump, and the shunting operation has an impact as well
The preheating time is determined based on the coking cycle. Even when the processing capacity is at full load, the preheating time must still comply with the specified requirements. When the temperature inside the tower is low at the beginning, the preheating speed is relatively slow; once the temperature reaches a certain level, the preheating speed can be increased； During low-load operation, the preheating time can be extended due to the smaller amount of oil and gas, but this has many disadvantages: it affects the distillation process and leads to more oil slippage. This needs to be done in accordance with the requirements of your equipment department and those of the equipment itself