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The important base materials for the production of the plate
heat exchangers are manufactured in steel mills.
Without the appropriation of stainless steel coil strip for the production of
the plate heat exchangers or plates of C-steel for the pressure frames, no manufacture
of plate heat exchangers would be possible.
For the production of the coil strip in stainless steel alloy, such as e.g. 1.4404
or 1.4539 on the other hand, plate heat exchangers are employed in the production
process for the most varied thermal applications. |
Typical tasks for SIGMA plate heat exchanger are:
- Cooling of ingot mold water
- Cooling of continuous casting systems
- Cooling of furnace water
- Cooling of coking plant / stripping water
- Cooling of rolling and drawing emulsions
- Cooling of emulsions
Application example: Coil coating, emulsion cooling, gear and hydraulic
oil cooling
In the case of a large steel mill in North Rhine Westphalia, more than 100 SIGMA
plate heat exchangers have been successfully used for the above applications
many years.
Application example: Cooling of coking plant waste water
SIGMA plate heat exchangers have been employed for many years for the cooling
of stripping water in coking plants. Generally the alloys Alloy 276 or 2.4819
are employed, and sometimes also titanium and titanium Pd. Furthermore, special
hard seals (C 4400) or soft-lip sealing (Viton) are employed for these applications.
In spite of the high stress demands and the heavy-duty operation, the equipment
has often been running for decades without causing problems.
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