Leak in the overhead oil and gas cooler of the catalytic fractionator
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There was a leak in the tube bundle of the overhead oil and gas cooler in the distillation tower; the material used was 08Cr2AlMo. The unit operated intermittently, with a total operating time of 275 days. After shutting down the unit for inspection and pressurizing it again, a leak was detected, and 51 tubes had to be plugged. I wonder if fellow sailors have heat exchangers made of this material, and how is their performance?
No, we are all made of ordinary materials; the only difference is that they have an anti-corrosion coating. There are two types: 847 and 901, and their effects are basically the same. The so-called difference is that 901 is resistant to high temperatures, but it cannot withstand high temperatures for long periods of time, as the coating tends to peel off.
There are over 50 tubes blocked in the cooler; what is the diameter of your cooler’s tubes, and will it be able to provide adequate cooling? The issue is that even the other tubes in the bundle cannot be guaranteed to remain functional for a long time. It’s better to replace it; use your old one as a spare.
Is it rust blocking the pipe? It indicates that the quality of the circulating water is poor.
The 09Cr2AlMoRE phase has a relatively stronger resistance to H2S; it is recommended to try using this material, with reference to the standard SH/T3129-2002