Refinery CDU Fired Heater

Heat recovery through the acid dew point from flue gas of a fired heater resulted in an increase in furnace efficiency of 4%.

4% furnace efficiency increase

3,200 kW heat recovery

Downstream corrosion rate <0.1 mm/year

Ambition to reduce their carbon footprint

The refinery wants to decrease the carbon footprint of their operations. To reach this target waste heat recovery is one of their key focus areas. Currently a lot of heat is being lost via the stack with the potentially corrosive flue gas. Our customer wanted to recover a part of this heat.

HeatMatrix polymer APH

Before no heat recovery was performed because of the corrosive nature of the flue gas. When the flue gas is cooled, sulphuric acid is formed and corrosion occurs inside the heat recovery system. The HeatMatrix polymer APH was selected because it can handle the formed sulphuric acid and makes additional heat recovery possible. 

4% furnace efficiency increase

After the HeatMatrix polymer APH was installed, furnace efficiency increased by 4%. Corrosion rates downstream of the heat recovery system remained below 0.1 mm/year. 


Solution has a duty of 3,200 kW
Flue gas flow 123,000 kg/hr
Temperature flue gas flow 180 °C
SO2 concentration up to 100 mg/Nm3
Installed system HeatMatrix polymer APH

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


Technical Assessment of heat recovery on your Fired Heater

Our process engineers assess the technical feasibility of additional heat recovery on your Fired Heater. The potential reduction in CO2 emissions, energy consumption and costs is determined.