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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.
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.
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.
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
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.