Case study no. 10:
KVS system in an electroplating shop
Initial situation
MAG values must be observed in electroplating operations. This is done by removing the surface evaporation from the electroplating tanks. The aggressive components are removed from the workplace air, combined and later cleaned in the scrubber.
At the same time, fresh air is blown into the production area from outside. This must be preheated, especially in winter. The exhaust air from electroplating contains energy that is lost.
This energy can be used to preheat the fresh air using a circulation system.
Task definition
By combining the exhaust air from the various basins, the chemical composition of the exhaust air cannot be clearly defined. Although this is largely neutralized after the scrubber, there may still be some particles in the air that attack a stainless steel exchanger.
Coated exchangers are also not an alternative, as the coating is the only protection against corrosion and the exchanger is no longer corrosion-resistant at the slightest damage. We are looking for a fully corrosion-resistant exchanger that can also withstand attacks from various chemicals and at the same time has good heat transfer properties.
Solution
The Calorplast gas-liquid heat exchanger made of solid plastic for cooling/heating aggressive gas flows consists of series-produced, replaceable modules with smooth tubes.
All parts are made of high-performance plastics and are welded together without seals. The optimized pipe arrangement guarantees maximum performance.
Result
The KVS system can be operated for many years with low maintenance and trouble-free operation. In addition to the required MAG values, the operator can save money with the heat recovery system and at the same time reduce the CO2 emissions of the entire system.
