Round-Block type graphite heat exchanger is a kind of smilar building blocks assembled graphite heat exchanger,it is composed of several columned impregnated graphite block.along the axial and radial to frill two groups holes in thegraphite block.the two kind of holes are passage of right angle.A chemcial medium(usually for corrosive medium)along theaxial flow channel flow,the other medium(as service medium) along the radial flow inside and outside or on both sides of the baffle flow,in order to achieve the purpose of the heat exchanger.Graphite blocks with "O"shape circle of F4 or F4 elastic tape to seal each other.Graphite blocks placed in a steel cylinder shell. the upper and lower parts were installed impregnated graphite distribuion of collection cover.as the import and export to treat liquid.all graphite heat block system are in a combination of metal casing,each phase between two graphite block assemble a ring baffle plate.outside the heat exchanger's shell with long bolt to tension,borrow the metal plate clamp to force to assure the sealing.that will allocate lid,graphite block and graphite collector assembly as a whole.