How to prevent plate heat exchanger from scaling in daily life?

1. Control water quality
Install filter: Install filter at the inlet of heat exchanger to remove suspended matter, silt, rust and other impurities in water, and reduce the possibility of impurities entering heat exchanger.
Soften water quality: For water sources with higher hardness, install water softening equipment to reduce the content of calcium and magnesium ions in water and reduce the formation of scale.
Regularly test water quality: Regularly test the water quality of water source to ensure that the water quality meets the use requirements of heat exchanger.
2. Optimize operating parameters
Control flow rate: Ensure that the flow rate of fluid in heat exchanger is moderate. Too low flow rate will cause impurity deposition, while too high flow rate will increase energy consumption and may cause scouring of plates.
Control temperature: Avoid running heat exchanger at high temperature for a long time, because high temperature will accelerate the formation of scale.
Control pressure: Ensure that heat exchanger operates within the design pressure range to avoid deformation or damage of plates due to overpressure operation.
3. Regular maintenance
Regular inspection: Regularly check the inlet and outlet water quality, pressure, temperature and other parameters of the heat exchanger to detect abnormal conditions in time.
Regular cleaning: Regularly clean the heat exchanger according to the use of the heat exchanger and the water quality. Even if there is no obvious sign of scale accumulation, preventive cleaning should be carried out regularly to maintain the efficient operation of the heat exchanger.
Check the sealing gasket: Regularly check the status of the sealing gasket to ensure that it is intact and replace it when necessary.
4. Use suitable cleaning agents
Regularly add cleaning agents: In daily operation, an appropriate amount of cleaning agent can be added to the system regularly to prevent the formation of scale and dirt.
Choose a mild cleaning agent: Choose a cleaning agent that is non-corrosive to the plate, and avoid using cleaning agents such as strong acids and alkalis that may damage the plate.
5. Optimize system design
Reasonably design the flow channel: When designing the heat exchanger, reasonably design the flow channel to avoid dead zones and low flow rate areas, and reduce the possibility of impurity deposition.
Install a bypass system: Install a bypass system in the system so that the heat exchanger can be bypassed for cleaning and maintenance when necessary.
6. Use anti-corrosion coating
Apply anti-corrosion coating: Apply anti-corrosion coating on the surface of the plate of the heat exchanger to effectively prevent corrosion and dirt adhesion.
Check the coating regularly: Check the integrity of the anti-corrosion coating regularly and repair the damaged coating in time.
7. Train operators regularly
Improve operating skills: Train operators regularly to improve their operating skills and maintenance knowledge of heat exchangers.
Enhance safety awareness: Enhance the safety awareness of operators and ensure that they operate in strict accordance with operating procedures.