Excellent coolers are a type of heat exchange equipment used to cool fluids. Usually, water or air is used as a coolant to remove heat. There are wall type coolers, spray type coolers, jacket type coolers, and coil type coolers. The polytetrafluoroethylene cooler for low-temperature use in power plants is a new type of equipment used for waste heat recovery to reduce exhaust gas temperature. The use of fluoroplastic heat exchangers can prevent acid corrosion and reduce the flue gas temperature to within 100 degrees. Plastic cooler is a fluoroplastic heat exchanger with strong corrosion resistance.

The cooler mainly contains calcium, magnesium ions, and acidic carbonates in the cooling water. When the cooling water flows through the metal surface, carbonate is generated. In addition, oxygen dissolved in cooling water can also cause metal corrosion and form rust. Due to the generation of rust and scale, the heat exchange effect decreases. In severe cases, cooling water has to be sprayed outside the shell, and in severe cases, scaling can block the pipes, rendering the heat exchange effect ineffective. The research data shows that scale deposits have a significant impact on heat transfer losses. With the increase of deposits, energy costs will increase, saving energy, extending the service life of equipment, and saving production time and costs.

For a long time, traditional cleaning methods such as mechanical methods (scraping, brushing), high-pressure water, and chemical cleaning (acid washing) have encountered many problems when cleaning equipment: they cannot clean sediment such as scale, acid solution causes corrosion to the equipment and forms loopholes, residual acid causes secondary corrosion or corrosion under the scale, leading to equipment replacement. In addition, the cleaning waste liquid is toxic and requires a large amount of funds for wastewater treatment.