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Floating head heat exchanger
Time :2023-10-30
Structure: only one end of the tube plate at both ends is fixed with the shell, the other end can move freely relative to the shell, known as the floating head. Floating head by the floating head tube plate, hook ring and floating head cover, is a detachable connection, the tube bundle can be withdrawn from the shell. The thermal deformation of the tube bundle and the shell are not constrained by each other and no thermal stress is generated.

 

Advantages: extractable tube bundle, when the heat exchanger tube is arranged in square or corner square, the tube bundle can be extracted for mechanical cleaning, suitable for easy scaling and clogging conditions. One end can float freely, the temperature difference between the medium is not restricted, no need to consider the temperature difference stress.

 

Disadvantages: complex structure, high cost, heavy equipment, material consumption. Floating head end of the complex structure affects the number of rows of pipes. Floating head sealing surface is prone to internal leakage during operation.

 

Scope of application: suitable for shell and tube bundles between the wall temperature difference is large or shell process media easy to scale occasions. Floating head heat exchanger in the oil refining industry or ethylene industry in the application of more, due to the floating head structure limits the use of pressure and temperature, the general situation of the temperature is less than or equal to 450 degrees, the pressure is less than or equal to 6.4 MPa. Can also be used in the pipe course of corrosion-prone occasions.