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What is a Teflon heat exchanger

2014/6/25      view:
Teflon English called Polytetrafluoroetylene, referred to as Teflon, PTFE, F4 etc.. Because the pronunciation of sake, commonly known as Teflon, Tie Fulong, Teflon, Teflon and so on (all Teflon transliteration). Teflon has the comprehensive advantages of other materials can not match, especially the temperature properties of PTFE materials and corrosion resistance in heat exchanger based on the Teflon, heat exchanger has been widely used in anti-corrosion industry, such as chemical, pharmaceutical, electroplating, pickling, anodizing etc..
PTFE heat exchanger has strong corrosion and anti ageing properties, because of its excellent resistance to temperature performance, is suitable for steam heating, and is also suitable for hot water heating;
PTFE heat exchanger is a new type of corrosion resistant heat exchanger in recent years developed. The main results form of shell and tube type and immersion type two. It has a unique chemical stability and thermal stability (-250 ~ 260 ℃). F4 heat exchanger tube plate and tube bundle (3 ~ 10mm in diameter capillary) are made of sintered powder metallurgy technology and advanced, excellent performance. Through the welding method unique, advanced, the Teflon connection strength between the heat exchanger tube and tube sheet up to 1.5 Mpa;
PTFE heat exchanger has an excellent corrosion resistance. The Teflon is chemically inert material, in addition to high temperature molten alkali metal fluoride, chloride, fluoride, three uranium hexafluoride, PFK, almost can work in all media. Such as: concentrated hydrochloric acid, hydrofluoric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, caustic soda, sodium hypochlorite, naphthalene, benzene, xylene, acetone, aqua regia, toluene, chlorine, various organic solvents etc.;
PTFE heat exchanger fouling resistant. Due to the chemical inertia, PTFE tube surface smooth, winding property and high expansion coefficient, the heat transfer surface is difficult to scale, greatly reducing the number of equipment repair, ensure the long-term operation of the heat transfer coefficient and the production of relatively stable.
PTFE heat exchanger and anti ageing properties. The Teflon does not contain photo sensitive gene, which has excellent resistance to ozone aging. In strong corrosive medium and the service life is 20 to 30 times of stainless steel;
PTFE heat exchanger. Because of the heat exchanger is a thin-walled tube, only 0.5mm, 0.75mm, 1mm wall thickness, so the Teflon material coefficient of thermal conductivity low, so that the total heat transfer coefficient is up to 150 - 300 (W/m² K);
Teflon heat resistance. Due to the friction coefficient is very small, Teflon lower roughness, lubrication performance good, so the resistance of the fluid in the tube bundle than metal tube;
PTFE heat exchanger has the advantages of small volume and light weight and compact structure.