How to prevent corrosion at the top of atmospheric pressure towers
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How to prevent corrosion at the top of an atmospheric pressure tower?
Generally, three or four injections at the top of the tower are used as anti-corrosion measures: ammonia injection, water injection, and corrosion inhibitor injection.
Injecting ammonia, water, corrosion inhibitors, or improving the pipe material
Remove the “four injections”, optimize operations, and improve pipe material
Three injections, as well as avoiding excessively low top temperature to ensure that the top reflux temperature is not too low
As crude oil becomes increasingly of lower quality, with high levels of sulfur and heavy metals, upgrading the material is the only solution; of course, the four-stage desulfurization process also needs to be carried out properly.
Upgrade the pipeline material, add corrosion inhibitors, and ensure compliance with regulations
Three injections at the tower top: ammonia injection, slow water injection
Implement proper process anti-corrosion measures, adopt the one-remove-three-injection approach, maintain the top of the tower at around 110 degrees, and reduce corrosion caused by the dew point at the tower top.
Four bets per draw or three bets per draw?
Could you recommend what materials are suitable for tower top equipment, pipes, and valves?