The corrosion of the sour water tank V6203 in heavy oil FCC unit mainly was the uniform corrosion and stress corrosion cracking caused by H2S. The pits of under-deposit corrosion were the sources of stress corrosion cracking.
The sour water tank in the stripping unit normally has a dome roof, a great quantity of pungent odorizing gas containing ammonia diffusing from the top of the tank, which pollutes environment and impact on the human health.
When it was used in the 3 sour water tanks i.e. V108, V206 and V106/1 in sulfur manufacturing workshop, the tanks have been operating for more than 2 years without any problems.
The corrosion of the sour water tank V6203 in heavy oil FCC unit mainly was the uniform corrosion and stress corrosion cracking caused by H2S. The pits of under-deposit corrosion were the sources of stress corrosion cracking. After being protected by glass scale coating, the tank has been operating smoothly for more than 3 years.
The performances and application of W2-1 type vinyl ester epoxy and its glass flake coating were introduced. The coating which had excellent anti-corrosion and anti-permeation performances could be used in organic acid, inorganic acid, alkaline, salt and sea water environments and the long-term service temperature was as high as 100℃. When it was used in the 3 sour water tanks i.e. V108, V206 and V106/1 in sulfur manufacturing workshop, the tanks have been operating for more than 2 years without any proble...
Stress corrosion of aci dic wate r container in sulfur workshop was analy zed.Experiments were done to choose the best anti-corrosive paint.Nano titanium polymer paint was chosen as the anticor rosive paint.After application for one y ear,the service life of the acidic water container has been proved to be prolong ed.