On the selection of materials for CO2 gas pipelines

2018-11-19View Original

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I’m seeking advice from experts in this field: I’m working on a CO2 purification project, where the feed gas is industrial waste gas rich in CO2 (with a molar concentration of over 99%). After processes such as pressurization, dehydration, and distillation, liquid CO2 is obtained as the purified product. My question is: since both the feed gas and the pressurized CO2 gas contain saturated water, must the material for the CO2 pipelines be 06Cr19Ni10? If 20 is chosen, what value is appropriate for the corrosion margin? (Considering a service life of 15 years) Please feel free to share your opinions. Thank you.

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On the selection of materials for CO2 gas pipelines

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