Graphite is a special non-metallic material with low density, low heat capacity, high thermal conductivity, corrosion resistance and good processing performance. It is an ideal material for manufacturing heat exchanger equipment. Graphite is impregnated to become impermeable graphite. Impermeable graphite not only has high temperature resistance, good thermal conductivity, good corrosion resistance, and low price, so it is regarded as an ideal material for preparing heat exchange equipment.

Graphite material has good heat transfer performance, corrosion resistance performance, and mechanical processing performance. It is an ideal chemical anti-corrosion equipment material. However, because graphite material has 10-30% through-hole voids, it must be impregnated with some impregnant to fill the voids. For equipment manufacturing. Due to the limitation of the corrosion resistance of the impregnant itself, graphite materials impregnated with ordinary resins (such as phenolic and furan resin) cannot withstand strong corrosive acids such as nitric acid, hydrofluoric acid, and concentrated sulfuric acid. Because of its strong chemical stability, polytetrafluoroethylene can also be used as an impregnant to impregnate graphite. It does not react with the above-mentioned strong corrosive acid even under high temperature conditions. It can not only resist the above-mentioned strong acid corrosion, but also can withstand relatively With high pressure and high temperature, the application range is greatly expanded.

The impregnated polytetrafluorographite heat exchanger is a device that is widely used in the chemical and environmental protection industries. It is characterized by being able to contain highly corrosive solvents, strong soluble solvents, oxidizing substances, and alkaline substances. The temperature reaches 200℃.