Corrosion And Protection Of Static Equipment In Refinery

Through the analysis of the corrosion problems of metal static equipment, such as heat exchanger and storage tank, which are commonly used in refinery, this thesis paper aims at looking for the reasons of corrosion, and offer effective measures to prevent or reduce the chance of its happening. At first, in order to solve the corrosion in the tubes of heat changer, this paper proposed to use anticorrosive coating, named as 7910. Second, based on the analysis of the reasons of corrosion in storage tank, this paper suggest to use antistatic coating, a high build coating of epoxy glass shell, to prevent corrosion. Finally, according to the thorough study of the corrosion problems of process pipeline on the ground and pipe network underground, this paper gives a detailed analysis of the current corrosion degree of these insulated process pipelines and concludes to the reasons of corrosion. At the same time, it offers the solution to combine epoxy coal tar and current cathodic as a combined protection.