Waste heat utilization / heat recovery at exhaust air purification
As a general contractor, Birk supplies a turnkey waste heat recovery system for hot water generation to a long-standing customer in the automotive supplier industry. The plant is a supplement to a thermal exhaust air purification plant on a painting/drying line which was supplied 8 weeks in advance.
The further addition of a heat recovery system for hot water generation to the thermal afterburning system results in an energetically optimal overall concept for the entire system with an energy recovery of approx. 85%.
The system is designed for flue gas temperatures of approx. 330°C, making it possible to recover more than 550 kW of heat output at a volume flow of approx. 8000 m³/h. The system is designed for flue gas temperatures of approx. 330°C, which makes it possible to recover more than 550 kW of heat output at a volume flow of approx. 8000 m³/h.
The scope of the system comprised the entire flue gas supply and discharge by means of an independent flue gas system from the chimney base via the heat exchanger of the waste heat utilisation system back into the chimney pipe - naturally including all necessary thermal insulation measures for further energy savings.
The independent exhaust air volume flow control of the heat recovery system is managed and controlled in such a way that there is no influence whatsoever on the upstream pressure control processes in the exhaust air cleaning system. The entire control technology based on the in-house control system is also included in the system scope.