Plate heat exchangers are gradually becoming the preferred choice in the heat exchange equipment industry

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Plate heat exchangers are gradually becoming the preferred choice in the field of heat exchange equipment. They are key devices for making rational use of and saving energy, as well as for developing new energy sources, and they have a wide range of applications. Currently, in many application areas, plate heat exchangers are gradually replacing shell and tube heat exchangers. It takes advantage of the unique features of plate heat exchangers. Today, I’ll briefly introduce to you our protagonist of the day: the plate heat exchanger. 1. In evaporation and concentration processes such as those used in papermaking, the food industry, and alcohol production, since one side of the process involves fibers, particles, or highly viscous media, a large cross-sectional area for flow is required. In the past, shell-and-tube heat exchangers could only be used, but their drawbacks of requiring frequent cleaning after clogging and being difficult to clean prompted related industries to develop new types of heat exchangers. At present, plate heat exchangers are widely used in the aforementioned process steps, among which black liquor concentration units have become standardized products. 2. In the catalytic reforming units of the refining industry, as well as in heat recovery devices for combined gas, heat, and power generation, plate-shell heat exchangers, fully welded plate air preheaters, and fully welded plate economizers have essentially replaced shell-and-tube heat exchangers. 3. In the cooling processes of the sulfuric acid industry, alkali production industry, and oil refining industry, plate heat exchangers have replaced shell-and-tube heat exchangers. 4. Water-to-water plate heat exchanger units for heat pump systems. Heat pump units are key components widely used in air conditioning systems and heat recovery plate heat exchanger systems. These applications impose the following requirements on heat pumps: light weight, small size (for easy assembly), good pressure resistance, good low-temperature performance, and high sealing efficiency. The shell-and-tube heat exchangers used in the past find it difficult to meet the above requirements. Water-to-water plate heat exchanger units not only save space in heat pumps but also reduce the cost of refrigerants and minimize refrigerant leakage; therefore, they are widely used as evaporators and condensers in heat pump systems. Common industrial applications of plate heat exchangers: Food and beverage industry: heating, cooling, evaporation, crystallization, and sterilization in the processing of various foods, beverages, juices, beer, etc. Chemical industry: heating, cooling, evaporation, and condensation of various inorganic acids, bases, and salts; heating, cooling, and condensation of various organic solvents. Central cooling system: turbine oil cooler, bearings, vacuum pump, auxiliary equipment cooler, seawater desalination. Oil industry: heating and cooling of various oils. Metallurgical industry: various water and oil coolers, as well as waste heat recovery systems, acid cooling for aluminum materials, and electrolyte cooling and heating.