Several practical tips for pump selection

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The petrochemical industry has always been at the heart of the **economic system, and a complete operating system in chemical enterprises relies on chemical process pumps. The chemical industry is complex, and the range of products available is vast. With environmental protection becoming an increasingly important concern, it is particularly crucial to know how to choose the right chemical pump. Today, Jingbo Cloud Commerce will share with you some practical tips for making such selections. First and foremost, the issue of corrosion must be addressed; to do this, it is necessary to select a pump made of an appropriate material based on the chemical medium in question. For example, sulfuric acid of different concentrations and temperatures has varying degrees of corrosivity on various materials. For concentrated sulfuric acid with a concentration of over 80% and a temperature below 80°C, carbon steel and cast iron exhibit good corrosion resistance. However, these materials are not suitable for sulfuric acid that flows at high speeds, and thus cannot be used as materials for pumps and valves. Common stainless steels such as 304 (0Cr18Ni9) and 316 (0Cr18Ni12Mo2Ti) also have limited applicability in sulfuric acid media. Fluoroplastic alloys exhibit excellent resistance to sulfuric acid. They are a patented material developed by the Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences. Experiments conducted by the Academy have shown that no chemical medium is capable of reacting with these materials at present; therefore, using fluorinated pump materials (F46) represents a more economical choice. Lined rubber pumps and plastic pumps (such as engineering plastics, fluoroplastics, etc.) are the best choices for transporting hydrochloric acid. For nitric acid, fluoroplastic alloy materials are typically used. For example, other acetic acids, bases, ammonia, alcohols, similar compounds, esters, ethers, etc.; it is particularly important to choose the right material. Next is the selection regarding the sealing of the pump; the type of seal and the sealing material also need to be chosen appropriately. For more information, visit Jingbo Cloud Commerce.