Why is there no residue in the oil washing regenerator at the crude benzene distillation station in the chemical production section of the coking plant?
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This post was last edited by Desert Poplar on 2011-2-27 at 15:47. Why is there no residue in the oil washing regenerator at the crude benzene distillation station in the chemical production section of the coking plant? Dear colleagues, after maintenance, our oil washing regenerator is no longer able to discharge residues. There are no significant changes in the temperature at the top and bottom of the regenerator. During the oil washing and regeneration process, no residues are being discharged from it, but this isn’t because the quality of our oil is good. Please help us understand what the reason might be. Thank you! ! !
1. First, check whether there is oil in the oil washing regenerator – make sure that oil can enter it and that any oil present can be removed. 2. Check whether the temperature gauge at the bottom of the regenerator tower is functioning properly. 3. Increase the bottom temperature of the tower.
The regenerator – ours has changed a lot compared to the original design. It’s like falling victim to a Chiu Hsiang whose face has been completely changed. The steam pipes used for pipeline heating have been changed many times; has the original poster made any changes? Is it possible that a steam valve is damaged, preventing it from closing properly during slag discharge and thus preventing the slag from being expelled? Also, the temperature hasn’t changed – what’s the temperature in the middle of the regenerator? What is the level of the regenerator liquid? Our factory currently uses the vent at the bottom of the regenerator to discharge slag, rather than the side discharge port as designed; what do you use? Is the liquid level very low? Another issue is that the oil washing process creates high resistance in the regenerator pipelines, leading to blockages, though they’re not completely blocked. . . It is recommended to flush oil into the regenerator and then try draining it. I wonder if there has been any coking issue with the operations recently?
Also, check what your superheated steam pressure and temperature are; they can’t be too low. What was changed during the repair? Has the slag discharge port moved? Has the fog catcher moved? If there are no issues, give it a try: maintain an intermediate to upper liquid level before draining the slag, stop feeding oil for 1 hour to keep it in a dry steaming state, and then drain the slag.
There are baffle plates inside the regenerator to capture mist; I really haven’t heard of that before
It’s quite good that the liquid level in our plant’s regenerator remains low
Agree with the person above. In production, I have encountered situations where slag could not be discharged from the side but could be discharged from the bottom.