What are the applications of vertical polishing storage tanks in the chemical industry
Information summary：Vertical polishing storage tanks are widely used in the chemical industry due to their characteristics of smooth and clean inner walls, low residual materials, strong corrosion resistance, and easy cleaning, which require high material purity, hygiene conditions, or process stability. The specific applications are as follows:
Vertical polishing storage tanks are widely used in the chemical industry due to their characteristics of smooth and clean inner walls, low residual materials, strong corrosion resistance, and easy cleaning, which require high material purity, hygiene conditions, or process stability. The specific applications are as follows:
1. Storage and transfer of chemical raw materials
High purity raw material storage: In chemical production, such as pharmaceutical intermediates, electronic grade chemicals (such as pure solvents, photoresist raw materials), food additives, etc., high cleanliness requirements are placed on storage containers to avoid contamination of materials by residual impurities on the inner walls of the containers. The inner wall of the vertical polishing storage tank is mirror polished (roughness Ra is usually ≤ 0.8 μ m), making the material less prone to adhesion and reducing the risk of residue and cross contamination. It is suitable for storing such high-value and high-purity raw materials.
Transfer of easily crystallized/viscous materials: Some chemical materials (such as resins and paste catalysts) are prone to crystallization or adhesion to the container wall during storage. The polished inner wall has high smoothness, which can reduce the material adhesion rate, facilitate emptying during subsequent discharge, reduce waste, and reduce cleaning difficulty.
2. Storage and reaction assistance of corrosive chemicals
Strong corrosive material storage: Vertical polishing storage tanks are often made of corrosion-resistant materials such as stainless steel (such as 304, 316L) and titanium alloys. Combined with polishing technology, the surface density is stronger, which can effectively resist the erosion of corrosive media such as acids (such as nitric acid, sulfuric acid), alkalis (such as sodium hydroxide solution), organic solvents (such as methanol, acetone), etc. For example, in pesticide production, it can be used to store corrosive intermediates containing chlorine and sulfur.
Pre reaction material temporary storage: In the continuous production process, some reaction materials need to be temporarily stored in storage tanks and maintained in a uniform state (such as with the assistance of a stirring device). Polishing the inner wall can reduce the frictional resistance between the material and the container, and when combined with stirring, it can more efficiently mix the materials and avoid uneven composition caused by local residues.
3. Compliant storage of food grade chemicals and pharmaceutical chemicals
Food additives/edible chemicals: such as preservatives, essence, spices, vitamin raw materials, etc., and their production and storage must meet food grade health standards (such as FDA, GB 4806). The inner wall of the vertical polishing storage tank has no dead corners, is smooth and easy to clean. It can achieve aseptic requirements through steam sterilization, chemical cleaning, and other methods to prevent microbial growth and meet the hygiene storage needs of food grade materials.
Pharmaceutical and chemical raw materials and finished products: In the pharmaceutical industry, the storage of raw materials, injection excipients, etc. must comply with GMP (Good Manufacturing Practice). Polishing storage tanks can avoid material residue and pollution, and the material stability is high (does not release heavy metal ions or harmful substances), ensuring drug quality and safety.
4. Solvent recovery and purification process
In the solvent recovery process of chemical production (such as distillation recovery of organic solvents such as ethanol and ethyl acetate), vertical polishing storage tanks can be used to temporarily store solvents to be purified or purified products. Polishing the inner wall reduces the contact and adsorption between the solvent and the container, reduces the risk of impurity mixing, and facilitates subsequent cleaning and reuse, ensuring the purity of the recovered solvent.
5. Material storage in the paint and ink industry
Coatings, inks, and other products are sensitive to particle impurities. If the inner wall of the storage container is rough, impurities may remain, which can affect the uniformity and quality of the product. The smooth inner wall of the vertical polishing storage tank can reduce the adhesion of pigments and fillers in the material, maintain the dispersion and stability of the material, and facilitate cleaning to switch between different colors or models of products.
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