Problem of cracked heat exchange tubes in the methanol wash propylene rich methanol heat exchanger

2016-12-15View Original

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Tube Rupture: Flashing of MeOH-rich fluid occurs at 130% of the set pressure of the PSV; therefore, a full lift safety valve without liquid trim is necessary. Why not consider it? Thank you. Finally, the safety valve on this pipeline is designed with fire conditions in mind – why?

Reply #22016-12-16

By the way, this safety valve is used on the pipeline of the propylene cooler; the design pressure for the tube side of the heat exchanger is 4.2 MPaG, while it is 2.5 MPaG for the shell side

Reply #32018-04-28

Determined in accordance with API and GB150 regulations. Because you can’t infinitely amplify accident issues that are impossible to calculate and have a low probability of occurring.

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Problem of cracked heat exchange tubes in the methanol wash propylene rich methanol heat exchanger

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