(Summary description)Scaling of heat exchanger is a common phenomenon in the thermal network system of heating enterprises. When the equipment runs for a period of time, the heat transfer surface of the heat exchanger will form scale, resulting in small thermal conductivity, thermal resistance increase, resulting in heat exchange deterioration, heat exchanger heat exchange rate is reduced, heating temperature drop, serious or even shut down cleaning, to the residential heating quality has a serious impact. Therefore, regular cleaning of heat exchanger is very necessary.
The main reasons for scaling of heat exchanger in heat network are as follows: because the heat network system uses mostly tap water or groundwater, and groundwater, as the medium and long term water source of pipe network, contains a large number of inorganic salts such as bicarbonate, carbonate, sulfate, chloride, silicate, phosphate, sediment and organic matter. Bring to the production fouling, energy consumption, corrosion perforation and other hazards. Scale composition is mainly calcium hydrochloric acid and calcium phosphate, when the water contains calcium sulfate, calcium silicate, magnesium silicate, ion concentration exceeds the solubility product will also occur precipitation, deposition on the heat exchanger sheet.
In order to solve this problem, most heating enterprises use chemical and manual methods to clean heat exchangers. Although the effect of chemical cleaning is good, but to consider the corrosion rate of heat exchanger control within the allowable range, in the chemical cleaning liquid to add the right amount of corrosion inhibitor and activation, infiltration, wetting additives. The operation is complicated and the cost is high. And after cleaning the chemical waste liquid is not easy to deal with, will also have an impact on the environment. And manual cleaning has low efficiency, poor effect, labor intensity and other shortcomings.
(Summary description)Scaling of heat exchanger is a common phenomenon in the thermal network system of heating enterprises. When the equipment runs for a period of time, the heat transfer surface of the heat exchanger will form scale, resulting in small thermal conductivity, thermal resistance increase, resulting in heat exchange deterioration, heat exchanger heat exchange rate is reduced, heating temperature drop, serious or even shut down cleaning, to the residential heating quality has a serious impact. Therefore, regular cleaning of heat exchanger is very necessary.
The main reasons for scaling of heat exchanger in heat network are as follows: because the heat network system uses mostly tap water or groundwater, and groundwater, as the medium and long term water source of pipe network, contains a large number of inorganic salts such as bicarbonate, carbonate, sulfate, chloride, silicate, phosphate, sediment and organic matter. Bring to the production fouling, energy consumption, corrosion perforation and other hazards. Scale composition is mainly calcium hydrochloric acid and calcium phosphate, when the water contains calcium sulfate, calcium silicate, magnesium silicate, ion concentration exceeds the solubility product will also occur precipitation, deposition on the heat exchanger sheet.
In order to solve this problem, most heating enterprises use chemical and manual methods to clean heat exchangers. Although the effect of chemical cleaning is good, but to consider the corrosion rate of heat exchanger control within the allowable range, in the chemical cleaning liquid to add the right amount of corrosion inhibitor and activation, infiltration, wetting additives. The operation is complicated and the cost is high. And after cleaning the chemical waste liquid is not easy to deal with, will also have an impact on the environment. And manual cleaning has low efficiency, poor effect, labor intensity and other shortcomings.
Scaling of heat exchanger is a common phenomenon in the thermal network system of heating enterprises. When the equipment runs for a period of time, the heat transfer surface of the heat exchanger will form scale, resulting in small thermal conductivity, thermal resistance increase, resulting in heat exchange deterioration, heat exchanger heat exchange rate is reduced, heating temperature drop, serious or even shut down cleaning, to the residential heating quality has a serious impact. Therefore, regular cleaning of heat exchanger is very necessary.
The main reasons for scaling of heat exchanger in heat network are as follows: because the heat network system uses mostly tap water or groundwater, and groundwater, as the medium and long term water source of pipe network, contains a large number of inorganic salts such as bicarbonate, carbonate, sulfate, chloride, silicate, phosphate, sediment and organic matter. Bring to the production fouling, energy consumption, corrosion perforation and other hazards. Scale composition is mainly calcium hydrochloric acid and calcium phosphate, when the water contains calcium sulfate, calcium silicate, magnesium silicate, ion concentration exceeds the solubility product will also occur precipitation, deposition on the heat exchanger sheet.
In order to solve this problem, most heating enterprises use chemical and manual methods to clean heat exchangers. Although the effect of chemical cleaning is good, but to consider the corrosion rate of heat exchanger control within the allowable range, in the chemical cleaning liquid to add the right amount of corrosion inhibitor and activation, infiltration, wetting additives. The operation is complicated and the cost is high. And after cleaning the chemical waste liquid is not easy to deal with, will also have an impact on the environment. And manual cleaning has low efficiency, poor effect, labor intensity and other shortcomings.
