Plate heat exchanger cleaning solution
(1) Countercurrent flushing is generally used during the movement or during short-term parking. It is not necessary to disassemble the device. This method is more effective when the scaling is not serious.
(2) High pressure water gun flushing method. Different rotating water gun heads are used for different plate heat exchangers, and the pressure can be adjusted freely.The use of high pressure water to remove dirt is applicable to the pipe, the pipe and the casing. High pressure water gun flushing effect is better.
1. Pour the cleaning solution into the cleaning equipment and then inject it into the heat exchanger.3. 3.Pickling: Statically soak the heat exchanger filled with the acid solution.Then continue to cycle dynamically. During this period, it is alternately cleaned alternately. After the acid washing is finished, if the pH of the acid solution is greater than 2, the acid solution can be reused. Otherwise, the acid washing solution should be diluted and neutralized and drained. The carbonate scale is washed with acid.
4.Alkaline washing: After the acid washing is finished, the sodium hydroxide, sodium, cesium and demineralized water are prepared in proportion, and the heat exchanger is alkali-washed by dynamic circulation to achieve acid-base neutralization, so that the plate heat exchanger plates are no longer corroded. Sulfate and silicate scales can also be washed with alkali.
5. Washing: After the alkali washing is finished, rinse repeatedly with clean softened water to thoroughly rinse the residue in the heat exchanger.