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The shell and tube type graphite heat exchanger consists of an array of graphite tubes and tube sheets bonded together with an adhesive (or using single-tube mechanical seals). The tube bundle is placed inside a cylindrical shell, with end caps made from impenetrable graphite or other corrosion-resistant materials, fastened by bolts to form the complete unit. One fluid flows inside the tubes, while the other fluid flows over the outside of the tubes (through the shell). Heat is transferred through the graphite tube walls, and the fluids do not come into direct contact with each other.
Shell and tube type graphite heat exchangers are suitable for applications involving highly corrosive chemicals and are commonly used for cooling, condensing, and absorption, but can also be used for heating and evaporation. Depending on the pressure, temperature, and heat transfer efficiency of the process conditions, various types of impenetrable graphite tubes can be selected, including standard tubes, medium-temperature tubes, impregnated tubes, and specially reinforced tubes (such as carbon fiber-reinforced tubes and inner plug tubes).

 


Main Advantages
•   Large heat transfer surface
•   Excellent corrosion resistance
•   Exceptional heat transfer performance due to adjustable cross-sections on both the tube and shell sides
•   High operational safety
•   Highly reliable equipment with low capital and maintenance costs
•   Robust design
•   Short delivery time
•   Long service lif


Design

  • •   4 different tube diameters: 16/25, 32/22, 37/25, or 51/38 mm
    •   Modular design: Adjustable number of tubes and tube lengths
    •   Maximum tube length: 6.0 meters(without connection), 9.0 meters (with connection)
    •   Multi-tube pass configuration
    •   Maximum tube sheet diameter: 2100 mm
    •   Multiple materials available for tube box and shell
    •   Tie rods and springs ensure thermal expansion compensation
    •   Carbon fiber reinforced tubes (optional)

•   Water-cooled tube box (for high inlet temperatures)
•   Liquid distributor (for falling film absorbers or evaporators)
•   Gas-liquid separator (for condensers)

•   Internal plug-in for enhanced heat transfer



Main Features
•   Design Pressure:Tube side: -0.1 (full vacuum) to +0.6 MPa,Shell side: up to 1.0 MPa
•   Design Temperature: -60 to +160°C
•   Heat Transfer Area: Up to 2000 m²



Details at a Glance:


  • Based on the processing conditions such as pressure, temperature, and heat transfer efficiency, various models of impermeable graphite tubes can be selected, including standard tubes,medium-temperature processing tubes, impregnated tubes, and specially reinforced tubes (such as carbon fiber reinforced tubes and internal insert tubes).

  • The bonding and sealing between graphite tubes and tube sheets
    The shell-and-tube graphite heat exchanger offers two types of graphite tube-to-tube sheet sealing structures: the GH type, which features the traditional bonding structure, and the GGH type, which is our unique single-tube sealing structure.

  • The tube bundle of the shell-and-tube graphite heat exchanger.
    The tube bundle consists of graphite tubes, graphite tube sheets, support plates, and baffle plates. The tube bundle can be replaced as a single component. The baffle and support plates can be made from various materials such as carbon steel, PTFE, PP, etc.


 
Example Applications：