How to avoid the corrosion of equipment by strong corrosive medium, so as to reduce equipment investment and maintenance costs and improve production efficiency and profit is a difficult problem that every chemical enterprise needs to solve forever. Many products have corrosion resistance but not high temperature resistance, while flake graphite has both advantages. The following Furuite Graphite introduces in detail how flake graphite can solve the corrosion problem of equipment:
1. Excellent thermal conductivity. Flake graphite also has good thermal conductivity, which is the only non-metallic material with higher thermal conductivity than metal, ranking first among non-metallic materials. The thermal conductivity is twice that of carbon steel and seven times that of stainless steel. Therefore, it is suitable for heat transfer equipment.
2. Excellent corrosion resistance. Various kinds of carbon and graphite have excellent corrosion resistance to all concentrations of hydrochloric acid, phosphoric acid and hydrofluoric acid, including fluorine-containing media, and the highest application temperature is 350℃-400℃, that is, the temperature at which carbon and graphite begin to oxidize.
3, resistant to a certain high temperature. The use temperature of flake graphite depends on the variety of impregnating materials. For example, phenolic impregnated graphite can withstand 170-200℃, and if a proper amount of silicone resin impregnated graphite is added, it can withstand 350℃. When phosphoric acid is deposited on carbon and graphite, the oxidation resistance of carbon and graphite can be improved, and the actual operating temperature can be further increased.
4, the surface is not easy to structure. The “affinity” between flake graphite and most media is very small, so dirt is not easy to adhere to the surface. Especially used in condensation equipment and crystallization equipment.
It can be seen that the equipment with flake graphite has excellent corrosion resistance and physical and mechanical properties, and can be used to manufacture anti-corrosion equipment and widely spread in chemical industry.
Post time: May-15-2023