So the liquid is heated up to approx.
Caustic soda storage tanks.
Also known as caustic soda or liquid lye sodium hydroxide is used to adjust ph in water and wastewater treatment and in the manufacture of chemicals rayon cellophane pulp and paper aluminum detergents soaps and a wide range of other products.
Soda caustic tanks are exclusively in use in the aluminium industry for etching out the aluminium of extrusion dies.
By inserting of the dies there is a reaction with the.
Over time precipitation of calcium and magnesium hydroxide carbonates and oxalates will occur.
Storage temperatures for caustic tanks should be beneath 100 f for polyethylene tanks and beneath 120 f for carbon steel tanks.
That is not the best choice if you are storing caustic soda in concentrations of 50 or higher.
If these elevated temperatures are required tank annealing and or naoh resistant corrosion barrier coatings should be considered to counteract potential tank damage.
General storage guidelines for 50 caustic soda solution.
About caustic tanks sodium hydroxide also known as naoh caustic soda lye and ascarite is a chemical base used in a wide variety of manufacturing industries.
A 2 4 year out of service tank cleaning schedule is recommended.
That is not the best choice if you are storing caustic soda in concentrations of 50 or higher.
In such tanks high concentated soda is being used.
Afterwards the extrusion dies are inserted into the tank.
Product should be stored between 85 to 100 f 29 to 38 c.
The typical caustic soda tank offered by plastic tank distributors is made from polyethylene.