Newcomer seeking help with issues related to the modification of the flexible cycle ratio in delayed coking
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A newcomer has a question regarding the modification of the flexible circulation ratio. Which expert has implemented such a setup? Is there still heavy wax oil flowing back into the tower after the modification? Is it still necessary to reprocess paraffin oil? Does the circulating oil returning to the tower have three inlets? What are the specific things to pay attention to in terms of operation after the modification? Does anyone with expertise have information on this? Teach the junior how to do it, shall we?
A newcomer has a question regarding the modification of the flexible circulation ratio. Which expert has implemented such a setup? Is there still heavy wax oil flowing back into the tower after the modification? Is it still necessary to reprocess paraffin oil? As for whether there is any modification, our design is as follows: the control cycle ratio is around 0.6. The design includes the return of heavy wax oil to the tower; the reprocessing of this wax oil is determined based on the control cycle ratio you use. The remaining wax oil is definitely either reprocessed or used as quench oil. Does the circulating oil returning to the tower have three inlets? Wax oil returns hot and cold, at the lower return point. What are the specific things to pay attention to in terms of operation after the modification? There is no specific information available; you’d better consult a reputable design firm, as such technical upgrades require careful calculation. Does anyone with expertise have information on this? Teach the junior how to do it, shall we?
I’ve learned something; thanks for the reply, it’s been educational
It’s not the flexible circulation ratio design from Luoyang Institute at all; the designed value is 0.3, but in practice the ratio is adjusted between 0.1 and 0.25. A super-low weekly change of 0.08 was also tried.