In addition to the overhaul under special circumstances, the plate-type stainless steel heat exchanger should also be regularly maintained. Different methods can be used according to different situations. If there is no leakage in the equipment, but the heat transfer system K has decreased, the plate type stainless steel heat exchanger can be disassembled and a closed circuit system is used to drive the descaling liquid into the equipment. Hours. Keeping the plate clean is one of the important conditions for maintaining a high heat transfer coefficient.
(1) Chemical cleaning method. In this method, a chemical solution is circulated through the heat exchanger to dissolve and discharge the dirt on the surface of the plate. This method does not need to disassemble the heat exchanger, which simplifies the cleaning process and also reduces the labor of cleaning. Since the corrugation of the plate can promote the turbulent turbulence of the cleaning liquid and is beneficial to the dissolution of the scale layer, the chemical cleaning method is an ideal method.
(2) Mechanical (physical) cleaning method. This method is to manually wash the plate with a brush afterwards, so as to achieve the purpose of removing dirt on the surface of the plate. Although this method is relatively straightforward, it is not easy to clean the harder and thicker scale layer.
(3) Comprehensive cleaning method. For the case where the dirt layer is relatively hard and thick, it is difficult to clean it by simply using one of the above methods. The comprehensive method is to first use the chemical cleaning method to soften the scale layer, and then use the mechanical (physical) cleaning method to remove the scale layer to keep the plate clean.