Material selection and application areas of corrosion-resistant pumps
Corrosion-resistant pumps are specially designed pumps mainly used to transport corrosive media. These media may include acids, alkalis, salts, organic solvents, and corrosive gases, which can corrode the pump body, seals, or be adsorbed into the pump body, causing partial or complete failure of the pump.
The material selection of corrosion-resistant pumps is crucial, usually including stainless steel, plastics (such as PVDF, FRPP, CPVC, etc.), ceramics, and rubber. Stainless steel is the most common in the domestic market due to its wide range of corrosion resistance and the convenience of maintenance operations. Plastic materials such as PVDF and FRPP are widely used in the transportation of corrosive media due to their excellent resistance to chemical solvents and acid and alkali resistance. Ceramic materials are also used in some special occasions due to their high hardness and high wear resistance.
The application fields of corrosion-resistant pumps are very wide, including chemical, pharmaceutical, food processing, electroplating, environmental protection and other industries. In the chemical industry, corrosion-resistant pumps are used to transport various acid and alkali media and chemical media, such as sulfuric acid, hydrochloric acid, sodium hydroxide and organic solvents. In the pharmaceutical industry, corrosion-resistant pumps are used to transport corrosive media such as acids and alkalis produced in synthetic reactions, as well as reactor discharge pumps, extraction pumps, and dosing pumps. In the food processing industry, corrosion-resistant pumps are used to transport corrosive media such as food acidifiers, lactic acid bacteria, and food enzymes, while avoiding the contamination of food by traditional metal materials. In the electroplating industry, corrosion-resistant pumps are used to transport electroplating coating liquids containing metal ions and chemical additives. In the environmental protection industry, corrosion-resistant pumps are used to treat wastewater containing highly corrosive substances, such as chemical wastewater, sewage treatment, and seawater desalination.
By selecting appropriate materials and designs, corrosion-resistant pumps can operate safely and stably in various harsh chemical environments, providing efficient and reliable transportation solutions for industrial production.
