Introduction to the surface treatment method of CO2 storage tank

Horizontal Or vertical cryogenic LCO2 storage tanks all require surface treatment, but there are more than one surface treatment technology, and different surface treatment technologies have their own advantages.If you don't know the specific situation before, you can take a look at the specific introduction of the surface treatment method of CO2 storage tank shared by jianshen tank manufacturers, and then it will be very clear.
 
There are three kinds of surface treatment technologies for CO2 cryogenic storage tanks: the surface is whitened, the surface is glossy, and the surface is colored.
 
Surface natural whitening treatment: During the processing of stainless steel, after rolling, edging, welding, or artificial surface fire baking and heating treatment, black oxide scale is produced. This hard gray-black scale is mainly composed of two EO4 components, NiCr2O4 and NiF. In the past, hydrofluoric acid and nitric acid were generally used to remove strong corrosion. However, this method is costly, pollutes the environment, is harmful to the human body, and is relatively corrosive, and is gradually eliminated. Therefore, there are currently two main methods for treating scale:sand blasting method: It is mainly to spray micro glass beads to remove the black oxide scale on the surface.
 
Chemical method: use a non-pollution pickling passivation paste and non-toxic cleaning solution with inorganic additives at room temperature for dipping. So as to achieve the purpose of whitening stainless steel. After processing, it basically looks a dull color. This method is more suitable for large and complex products.