Biogas fired CHP

Heat from the flue gas of a biogas fired Combined Heat and Power (CHP) installation can be used to heat water from a heating grid. 

Combined Heat and Power (CHP) system of an industrial factory
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Combined Heat and Power (CHP) system of an industrial factory

Minimized heat loss

Industrial waste heat used for heating grid

Corrosion resistant solution

Additional heat recovery from CHP

A communal water treatment facility decided to generate electricity and heat in a CHP firing the biogas from their anaerobic treatment. The biogas contains H2S leading to corrosivity of the flue gas when it’s cooled down. This limits waste heat recovery. To make the CHP more sustainable, they aim to recover additional heat from this flue gas.

Study on additional heat recovery

HeatMatrix designed a heat recovery system to recover heat from flue gas of four parallel operating biogas engines. The flue gas is collected into one central ducting system and send through a HeatMatrix polymer economiser. In the heat exchanger the flue gas is cooled down below the acid dew point.

Corrosion free heat recovery

When the flue gas us cooled from 180 to 102 °C this results in a heat recovery of 191 kW. With this heat, 8,167 kg/hr of water can be heated from 75 to 90 °C. No corrosion will occur after installation of the heat recovery system

Specifications

Solution has a duty of 190 kW
Flue gas flow 8,000 kg/hr
Temperature flue gas flow 180 °C
SO2 concentration 800 mg/Nm3
Proposed system HeatMatrix Polymer Economiser
Process flow diagram (PFD) of a HeatMatrix polymer air preheater installed in series with a metal air preheater on a Regenerative Thermal Oxidizer (RTO)

More sustainable water purification process

"HeatMatrix helped us evaluate options to become a more sustainable communal water treatment facility. Thanks to their technical assessment, the polymer economiser became an important option to consider for future CO2 emissions reduction."
Water Treatment FacilityOperations Manager
Water Treatment Facility

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

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Technical Assessment of your CHP

Our process engineers assess the technical feasibility of additional heat recovery on your CHP, or any other thermal process. Your potential reduction in CO2 emissions, energy consumption and costs is determined by our experts.

  • Analysis of process data of your CHP
  • Minimal input data required
  • Business case on your savings potential
HeatMatrix technical assessment of heat recovery on a Combined Heat and Power (CHP) system
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