Chemical descaling of heat exchanger
Views: Date:2020-03-11
Fouling at the tube side of the heat exchanger is mainly due to the poor quality of water. Two forms of coking, sedimentation and adhesion of scale and oil scale are formed. Chemical descaling should be performed first. The scale analysis of the heat exchanger should be analyzed to find out the scale. Nature, you can decide which solvent to use for cleaning. Generally, sulfate and silicate scales are washed with alkali (soda ash, caustic soda, trisodium phosphate, etc.), and carbonate scales are washed with acid (hydrochloric acid, nitric acid, phosphoric acid, hydrofluoric acid, etc.). The coke on the heat exchanger oil can be cleaned with sodium hydroxide, sodium carbonate, washing powder, liquid detergent, sodium silicate and water in a certain proportion. The heat exchanger is chemically cleaned and requires re-piping at the site, which takes time.- Last： The structural
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