Tank cleaning acid washing

Experiments have shown that the best construction material for the storage of hydrogen peroxide is high purity (99.6%) aluminium. Aluminium containers should be thoroughly cleaned to remove any traces of organic impurities, and washed first with a solution of caustic soda and then with water and 10% sulphuric acid, over a period of several hours. Finally the acid is washed out with distilled water, after which it is desirable to re-wash the container with hydrogen peroxide. Tanks and containers for hydrogen peroxide should be provided with safety valves, that are ruptured by the excessive pressure produced if the peroxide decomposes. 

The chemical and oil refining industries employ a variety of methods to clear and clean storage tanks, pressure vessels, and pipelines as a preparation for maintenance or the actual maintenance itself. Depending on the job, water washing may not be suitable and the planners may use various acids and alkalis for this activity. There can be risks associated with such reactive chemicals, as noted in the following paragraphs. 

The Avanel S-70 provides for removal of organic surface deposits and. by surface tension reduction, better contact between the aluminum surface and the organic acids. In addition to industrial applications like cleaning ovei—the-road aluminum trailers and aluminum prior to anodizing, this cleaner may also be used in household applications such as cleaning aluminum flashing, windows and door fixtures. Depending on the application. this product may be used in a pressure wash, pump spray or dip tank. 

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