Seeking help regarding the sealing structure of a continuous reforming reactor
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Since the operation of our continuous reforming reactor began, abnormal increases in reactor pressure differential have been observed on several occasions, each time around half a year after startup. The first two occurrences were due to welding cracks in the central cylinder Johnson mesh, a loose flange on the catalyst feed pipe, and welding cracks in the sealing plate of the fan-shaped cylinder; this issue has occurred again recently. It is currently suspected that there is a problem with the sealing structure, as the thermal deformation has not been properly resolved. Could that expert please provide a diagram of the sealing structure at the upper part of your reactor for reference? (It can be sent via email to wzk1998@163.com). Those who provide such information will receive a rating of at least 60 wealth points
Is your unit from UOP or IFP? Was the thermal performance testing not carried out thoroughly during the commissioning phase? Another issue is the quality of construction
What the original poster mentioned occurs quite frequently in IFP continuous reforming; I’m not aware of your specific situation； Let me talk about the issues with IFP: 1. In IFP, there are four reactors arranged side by side, along with six lifters; unstable catalyst flow can very easily lead to the phenomenon you mentioned. In UOP, the four reactors are stacked vertically, with two lifters installed; this ensures stable catalyst flow and reduces problems. ⒉Installation quality issues: ⒊ There are problems with product selection and material choice; compare and find solutions.
The bottom of UOP’s current fan cylinder no longer has a seal; it is now open from top to bottom. It is said that this is also part of the improved design