50 cubic meter natural gas storage tank
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It is necessary to design a 50 cubic meter natural gas storage tank in gaseous state, with a design pressure of 1.1 MPa and a design temperature of 60 degrees, using Q345R material. Question: 1. Is stress corrosion a problem in gas natural gas storage tanks? 2. Does the equipment require overall heat treatment? 3. Is degreasing required for the inner surface of the storage tank?
Degreasing is only necessary for oxygen tanks; for natural gas, it’s sufficient to remove oil and the like. As for whether stress corrosion occurs, it depends on the hydrogen sulfide concentration as well as several conditions related to hydrogen sulfide stress corrosion. If it is confirmed that there is no stress corrosion, then heat treatment is not necessary.
Personal opinion: It’s equivalent to a 50-cubic-meter natural gas buffer tank; the diameter of yours should be around 2500. The wall thickness of the tank body isn’t very thick, so heat treatment isn’t necessary. Sandblasting of the inner surface is required