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Carlsberg

Flue gas of a biogas co-fired steam boiler cooled below the acid dew point without any corrosion issues.

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HeatMatrix customer reference project polymer air preheater

4% boiler efficiency increase

290 kW heat recovered

Payback time 1 year for equipment

Making the manufacturing process more sustainable

Within the Together Towards ZERO program, Carlsberg strives to make their breweries more sustainable. One of the steps taken in their Ukraine brewery is using a biogas fired steam boiler. 

Sulphuric acid problems prevented additional heat recovery

Due to the usage of biogas, high concentrations of sulphur elements can be found in the flue gas. If the flue gas is cooled down, these sulphur components condense and form sulphuric acid which is very corrosive. To prevent this from happening, Carlsberg operated their system such that the flue gas was at a high temperature (>140 °C) leaving the stack. Additional heat present in the flue gas was not used.

HeatMatrix Polymer APH allowed cooling through the Acid Dew Point

HeatMatrix installed a polymer air preheater which allowed Carlsberg to cool to temperatures below the acid dew point and achieve additional heat recovery on their steam boiler. There are no corrosion issues because of the corrosion resistance of the polymer used in the HeatMatrix air preheater. Based on the success in Ukraine, Carlsberg Serbia introduced the same solution on their biogas fired boiler.

Specifications

Solution has a duty of 290 kW
Boiler capacity 20 TPH
Flue gas flow 15,000 kg/hr
Temperature flue gas flow 142 °C
SO2 concentration 71.5 mg/Nm3 SO2
Installed heat exchanger HeatMatrix Polymer Air Preheater
Process flow diagram (PFD) of a HeatMatrix polymer air preheater installed on a steam boiler

Boiler efficiency increased 4%

"HeatMatrix polymer Air PreHeater technology gave us the opportunity to recover additional heat from our steam boiler and make our process more sustainable. After installation of the polymer APH, our boiler efficiency increased with 4% and no corrosion issues occured since then."
Dmytro MarkovskyPlant manager, Carlsberg
Dmytro Markovsky

For more than 10 years we design and deliver heat recovery systems for industrial factories

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