Main Application of PFA Heat Exchanger

Main Application of PFA Heat Exchanger

I. Main uses of PFA heat exchangers·

PFA heat exchanger is also called Plastic King Heat Exchanger or F4 heat exchanger. Its excellent corrosion resistance and ageing resistance make it widely used in chemical industry, pickling, electroplating, medicine, anodizing and other industries. At the same time, because of its excellent temperature resistance, PFA heat exchanger is suitable for both steam heating and hot water heating.

Basic Introduction of PFA Heat Exchanger

· PFA heat exchanger is called Polytetrafluoroetylene in English, Teflon, PTFE, F4 and so on. Chinese names are "Plastic King", "Teflon", "Teflon", "Teflon", "Teflon" and so on. It has unparalleled chemical and thermal stability (- 250 - 260 C). The tubesheet and bundle of F4 heat exchanger (3-10mm capillary) are sintered by advanced powder metallurgy process, with excellent performances. By adopting unique and advanced welding method, the connection strength between tube bundle and tube sheet of fluoroplastic heat exchanger reaches 1.5 Mpa, which solves the problem that the traditional welding method of fluoroplastic heat exchanger needs to leak because of micro-leakage. Through combination, F4 heat exchanger with various forms is an ideal choice for heat transfer of strong corrosive, strong acid and strong oxidizing medium, which is liked by users; PFA heat exchanger has many types, including immersion heat exchangers of W, L, U, O, flat and circumferential shapes, as well as tower heat exchangers and shell-and-tube heat exchangers, including tower heat exchangers and tube heat exchangers. Shell heat exchanger (also known as shell-and-tube heat exchanger) can be made of metal or polymer materials according to different heat transfer processes and heat transfer media; PFA heat exchanger can be used for steam heating or hot water heating or cold water cooling. It is suitable for heating, water cooling, refrigeration, evaporation and concentration of plating, electrolysis, phosphating, pickling, aluminium polishing, deoiling, anodizing and other surface treatment processes, as well as seawater cooling; The working pressure, working temperature, heat transfer coefficient and installation mode of PFA heat exchanger vary greatly according to different types, different shell materials and different heat media.

Main characteristics of PFA heat exchanger

PFA heat exchanger has excellent corrosion resistance: F4 is a chemical inert material, which can work in all media except elemental fluorine, molten alkali metal, chlorine trifluoride, uranium hexafluoride and perfluorinated kerosene at high temperature.

PFA heat exchanger has good scaling resistance: chemical inertia, surface smoothness, winding and high expansion coefficient of F4 tube make it difficult to scale on the heat transfer surface, which ensures relatively stable heat transfer coefficient.

PFA heat exchanger has long service life and low comprehensive cost: PTFE does not contain photosensitive genes, so it has excellent atmospheric aging resistance. Its service life in strong corrosive medium is 20 to 30 times that of stainless steel.

PFA heat exchanger has good heat transfer performance: because of its small diameter, no gradient of temperature difference and thin-walled tube, it overcomes the shortcoming of low thermal conductivity of PTFE material and makes its total heat transfer coefficient reach 200-350 (W/m2.K).