How to remove scale from plate heat exchanger? Scale cleaning method of plate heat exchanger
When scale is formed in the heat exchanger, the heating surface of the plate will be damaged and the heat transfer surface will be reduced The internal and external flow sections increase the flow resistance of the circulating water inside and outside the heat transfer surface. In severe cases, the flow section is very small or even completely blocked, which will make the plate heat exchanger unable to operate normally. The main reason is that the water contains calcium and magnesium salts with low solubility. These salts have common characteristics. Their solubility decreases with the increase of water temperature and becomes intolerant salts. The existence of such salts , is the culprit in the formation of scale. So when the above situation occurs, how can we remove the scale inside? Today, I will simply take you to understand the scale cleaning method of the lower plate heat exchanger:
1, dosing and softening treatment
This method is simple, efficient, economical, and does not require special water making equipment. It is a highly practical anti-scaling water treatment method. According to the different dosing methods, it can be divided into two types: correction agent treatment and anti-scaling treatment.
2, ion bar anti-scaling water treatment
This method is a new and advanced water treatment equipment, It has good application effect in central air conditioning system, hot water circulation system and circulating cooling water system, and has great prospects for development.
3, magnetization anti-scaling treatment
When the water passes through a high-strength magnetic field, the multi-molecular aggregates in the water and Under the action of the ion magnetic field, the original single-scattered and multi-ion complexes are disassembled into single or short-bonded complexes, which vertically cut the magnetic field lines of the external magnetic field at a certain speed to generate induced currents. Therefore, each ion establishes a new magnetic field in the same direction as the external magnetic field, and the adjacent polar ion molecules compress and attract each other in an orderly manner, which leads to the change of crystallization conditions, and the formed crystals are very relaxed and resistant to resistance. They have poor compressive and tensile strength, and are very brittle. Their cohesion and adhesion are also weak, and they are not easy to adhere to the heated surface to form scale.
