Various types of heat exchangers are indispensable equipment in the process. How to design a heat exchanger with low investment, low energy consumption, high heat transfer efficiency and convenient maintenance according to different process production processes and production scales Very important work. Classified by process function : cooler, heater, reboiler, condenser, evaporator, superheater, waste heat boiler, etc. 2 According to the heat transfer method and structure classification : the partition wall heat transfer type and the direct contact heat transfer type. The partition wall heat transfer type is divided into other forms of heat exchangers such as tube and shell type, plate type, tube type, liquid film type and so on.

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