Problems during the commissioning of delayed coking
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It seems that during the startup of delayed coking, it is difficult to establish reflux in various sections of the fractionation tower, especially in the middle section and for diesel. Any good suggestions on timing and procedures? Could the experts give some guidance? Thank you!
This kind of situation did occur at the beginning of operation; it was mainly due to low temperatures and insufficient heat, which prevented the middle fraction and diesel components from rising. In such cases, less reflux can be used, or the pump can be stopped. Additionally, I’m not sure whether a gasoline separation tank is installed at the top of your distillation tower before operation begins In the future, it will be possible to control the temperature at the top of the tower effectively, reducing fluctuations and enabling the products to meet the required standards more quickly.
By using startup wax oil and performing distillation until the tower is full and the wax oil is collected in a tank, raising the temperature to above 420°C, and starting up with residue oil after all reflux streams have been established, this problem can be completely avoided.
Nonsense. For reference only. When starting the combined operation of gasoline and diesel, add a pipeline that leads directly to the diesel collection tank and the gasoline collection tank. . . I’m not sure if it’s possible to build it directly. . . . . . . .