Graphite Heat Exchangers
•What is Graphite Heat Exchanger?
It is an all-plastic, fixed, tube-sheet, tube-and-tube heat exchanger, which is made of graphite-modified polypropylene plastic. The shell, tube sheet, head flange and connecting pipe are all made of pure Made of polypropylene plastic.
•Features of Graphite Heat Exchanger
- Corrosion resistance:
- Polypropylene has excellent chemical resistance. For inorganic compounds, regardless of acid-base salt solution, except for oxidation, it has no destructive effect on it until almost 100 ° C. It has no destructive effect on almost all solvents at room temperature. All insoluble, general alkane, alcohol powder, aldehydes and other media can use this equipment.
- Light weight:
- Since the specific gravity of polypropylene is only 0.91-0.93, which is the lightest material among resins, this equipment is very light, which is beneficial to the installation and maintenance of the equipment.
- Temperature resistance:
- The melting point of this product is 164-174°C, so the general use temperature can reach 110-125°C, and it will not deform even when it reaches 150°C without external force.
-
Other properties: - Non-toxic, non-scaling, non-polluting media, and can also be used in the food industry.
Scope of use: Due to the above characteristics, all this equipment is suitable for heat exchange equipment for various purposes in chemical industry, light industry, metallurgy, pharmaceutical, food, chemical fiber and other industries, especially suitable for condensers to replace the original stainless steel , Enamel, graphite, glass condensers.
Instructions for use: This equipment is stable in operation, good in effect, easy to install, and fully meets the production needs.
Physical and Mechanical Properties Comparison Table
Properties of graphite modified polypropylene | data | Pure polypropylene mechanical properties | data | ||
Density g/cm3 | 1.1 | Density g/cm3 | 0.91 | ||
Working temperature °C | -5~125 | Working temperature °C | -10~130 | ||
Linear expansion coefficient X10-5/℃ | 5.7~12 | Linear expansion coefficient X10-5/℃ | 6~13 | ||
Impact strengthkg/cm2 | ≥6.5 | Impact strengthkg/cm2 | ≥15 | ||
Tensile strengthkg/cm2 | ≥230 | Tensile strengthkg/cm2 | ≥300 | ||
Welding tensile strength kg/cm2 | ≥123 | Welding tensile strength kg/cm2 | ≥165 | ||
Heat transfer coefficient/m, hour, degree | 300-400 | Heat transfer coefficient/m, hour, degree | 0.3 | ||
work pressure | Positive pressure MPa | ≤0.3 | work pressure | Positive pressure MPa | 0.3 |
Negative pressure MPa | -0.1 | Negative pressure MPa | -0.1 | ||
Factory water pressure test MPa | 0.4 | Factory water pressure test MPa | 0.4 |