How to clean the evaporative condenser chemically

​How to clean the evaporative condenser chemically

Heat exchanger is an energy-saving equipment that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a higher fluid to a lower temperature fluid, so that the fluid temperature reaches the process specification The index of heat exchange equipment, also known as heat exchanger. Make the material temperature meet the needs of the process conditions, and it is also one of the main equipment to improve energy utilization. The heat exchanger industry involves nearly 30 industries such as HVAC, pressure vessels, and water treatment equipment, forming an industrial chain with each other. With the rapid development of energy-saving technology, there are more and more types of heat exchangers.

According to the "2013-2017 China Heat Exchanger Industry Development Prospect Forecast and Transformation and Upgrade Analysis Report" data show that the market size of China's heat exchanger industry in 2010 was around 50 billion yuan, mainly concentrated in petroleum, chemical, metallurgy, electric power, shipping, Central heating, refrigeration and air conditioning, machinery, food, pharmaceuticals and other fields.

　　 Evaporative condenser is a heat exchange refrigeration equipment that uses the exchange of refrigerant, water and air to take away heat. The evaporative condenser will scale internally after being used for a long time. Long-term operation of the equipment with scale will corrode and damage the body of the equipment. Among them, the most harmful to the condenser is intergranular corrosion and stress corrosion. Corrosion will cause the system to rupture and perforate. Cause serious losses.

The reason why the cooling water system will scale is because the cooling water has not been treated or has not been properly treated during use. There are a large amount of calcium, magnesium, and chlorine plasma in the water. The cooling water evaporates continuously during the recycling process. Increasing concentrations of various salts of scaly will form scale. When cleaning the scale body in the condenser, the use of industrial chemical cleaning is the best, but the hot-dip galvanized layer cannot be destroyed when cleaning with very high technical content. Pay attention to before chemical cleaning:

　　 1. The direct cleaning of the condenser is easy to leave the dead corners for cleaning, so local changes are required, and the changes will not affect the future cooling effect.

　　2. In order to ensure the quality of cleaning, a movable cleaning spray system is needed, and a filter screen is added to the water tank and the return pipe to prevent the residue from clogging the spray hole.

　　 3. Before cleaning, check whether the nozzle is unblocked and can spray water.

　　 4. Pay attention to the water pressure and water flow of the cleaning solution when cleaning.