Graphite heat exchanger according to the structure can be divided into block hole type, shell and tube type and plate type3 types. Block hole type: consists of a plurality of apertured lump graphite component assembly. Shell and tube type: shell and tube heat exchanger in the graphite heat exchanger occupies an important position, according to the structure is divided into two type fixed and floating head. Plate: plate heat exchanger with graphite plate bonding. In addition, there are immersion, spray and sleeve type (see tube type heat exchanger, heat exchanger casing ). Graphite heat exchanger has superior performance of corrosion resistant, the heat transfer surface is not easy to scaling, good heat transfer properties. Because of graphite brittle, low flexural and tensile strength, therefore it can only be used for low voltage, even if the bearing capacity of the best block hole structure, its working pressure is only 0.3~ 0.5mpa.Its not ubiquitous due to high cost and bulk mass. It is mainly used for hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid and other corrosive medium heat exchanger, such as acetic acid and acetic anhydride condenser.
Graphite pipe is distributed into three types according to the impregnating material, impregnated with synthetic resin, Water glass impregnated with resin and asphalt impregnated