For the renovation of screw pumps, are there high-temperature seals capable of withstanding temperatures over 200°C?
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For the renovation of screw pumps, are there high-temperature seals that can handle temperatures over 200°C? Looking for recommendations for transporting residue oil
Do you mean modifying the mechanical seal? The temperature is fine; it’s just the viscosity of this medium? It’s quite troublesome
I’m not sure which part you are modifying. As for the temperature resistance of the graphite in the dynamic and static rings, there is no issue with that. However, antimony-doped graphite is generally used at higher temperatures, while phenol-formaldehyde resin is used at lower temperatures； When it comes to changing the medium, viscosity plays a role; in fact, heavy oil pumps are more suitable for high-viscosity fluids, while it’s harder to make changes when the viscosity is low :) :(
No problem. For our previous heat transfer oil pumps, operating at 220 degrees Celsius, we used mechanical seals manufactured by Dandong Klon; the auxiliary seal consisted of graphite gaskets, and it was a mechanical seal with a bellows design. The normal service life of such seals is generally over one year.
For medium-grade residue oil, it’s not very suitable to use metal bellows!
Residue is very viscous; for mechanical seals with a single-face diaphragm, the PLAN32 flushing scheme is a good choice. I use those from American Foxboro here, capable of withstanding temperatures over 300 degrees, and Klon also offers such products!
This isn’t difficult, right? Residue pumps have been in use since the early 1990s, with bellows mechanical seals