Excellent recovery!

• Recovering heat saves on energy and cuts CO2
• Results in annual energy efficiency gains (~3.5 %) and less CO2 emissions (~600 000 kg)

Carlsberg brewery is an energy-savings front-runner in line with its mission to optimise production and reduce overall CO2 emissions and energy consumption costs. 

Carlsberg Ukraine, for example, has invested in cost-saving heat exchanger (air pre-heater) and recovery systems that create biogas co-fired in existing steam boilers. Some conversions were needed to deal with small concentrations of sulphur contained in biogas that turn flue emissions acidic when cooled below the acid dew point (typically around 110 °C). The brewery employed polymer tube bundles in the air pre-heaters, which are resistant to acid dew point corrosion and generally more durable because of the rigid honeycomb configuration. Similar applications on biogas co-fired boilers can be found in the sugar, potato and paper industries.

Key benefits

The heat exchanger installed at Carlsberg's Kiev site generates annual energy savings of around 300 kW at full load. This corresponds to an overall improvement in efficiency of some 3.5 %, and reduced CO2 emissions of around 600 000 kg per year.