Cleaning and maintenance of heat exchangers

After long-term operation, heat exchangers inevitably suffer from scale and rust problems. Corrosion: The cooling and chilled water of the heat exchanger is highly corrosive without treatment, and the inner walls of the equipment often suffer from rust residue detachment and even perforation due to corrosion. The detached rust residue will block the pipeline, reducing the heat transfer efficiency; The presence of simultaneous corrosion greatly shortens the service life of the equipment. Inorganic salts dissolved in water inside the pipeline crystallize and precipitate, forming scale on the walls of heat exchange surfaces such as condensers, resulting in a decrease in heat exchange efficiency and a decrease in cooling or heating efficiency. At the same time, as the amount of hard scale increases, the electricity consumption also increases. Biological sludge: Due to the formation of dirt from soil, silt, and humic substances in water, combined with the formation of biological sludge from microorganisms such as bacteria and algae and their secretions, it can cause pipeline blockage in severe cases; And dirt and mud can affect heat exchange efficiency, consume more energy, cause high-pressure operation, and in severe cases, cause overpressure shutdown. All of these seriously affect the normal operation of the heat exchanger. During the heat transfer process, dirt directly affects the heat transfer efficiency and the normal operation of the equipment. The results of the heat exchanger operation show that the electricity consumption of the uncleaned heat exchanger will increase after running for a period of timeExtend the service life and reduce equipment depreciation and usage costs. Reduce downtime caused by accidents and improve refrigeration efficiency. Cleaning can remove sludge, keep the pipeline unobstructed, and ensure clear water quality.

Our company mainly focuses on cleaning our own plate heat exchangers and can also clean various heat exchange equipment from other manufacturers Plate heat exchangers, volumetric heat exchangers, heaters, coolers, boilers, central air conditioning, cold storage, refrigeration machines, direct fired engines, flash evaporators, tea baths, steam turbines, compressors, reactors, evaporators, pipelines, water heaters, cleaning, descaling, anti-corrosion, water quality treatment, etc.

Classification of Heat Exchanger Cleaning: Physical Cleaning and Chemical CleaningOur company strictly follows the construction standard process for cleaning heat exchangers.

1 Disassemble the equipment to collect scale samples for laboratory analysis-→②Check the scaling situation of the equipment-→③Identify the material of the equipment-→④Develop a cleaning plan-→ ⑤Blind blocking of adjacent equipment-→⑥Install temporary pipelines-→⑦Forced circulation water test-→⑧Gradually add the medication-→⑨Forced cycle cleaning-→⑩Rinse thoroughly with clean water-→⑾Restore the device to its original state.

2 Disassemble the equipment to collect scale samples for laboratory analysis-→②Check the scaling situation of the equipment-→③Identify the material of the equipment-→④Develop a cleaning plan-→ ⑤Physical cleaning of each board one by one-→⑥Check the condition of the rubber pad-→⑦Replace spare parts-→⑧Clean floating and sinking-→⑨Forced soaking and cleaning-→⑩Rinse thoroughly with clean water-→⑾Restore the device to its original state.

Our company can choose between physical cleaning or chemical cleaning based on the fouling situation of the heat exchanger during the cleaning process.