Waste heat recovery from
Thermal Oil Heaters
Cold spot corrosion problems limit heat recovery. The polymer air preheater is corrosion resistant and can boost your Thermal Oil Heater efficiency.
Improve Thermal Oil Heater efficiency >95%
Prevent corrosion & fouling
Reduce CO2 emissions
Your Thermal Oil Heater has additional heat recovery potential
Waste heat recovery on Thermal Oil Heaters is limited by corrosion problems
10-15% of the energy is lost via the stack
Thermal Oil Heaters are applied in the industry where such high temperatures are required that can not be generated with steam. They are reliable systems because you do not have to deal with high pressures, water treatment and condensate losses that typically exist when you operate a steam boiler. However most installed Thermal Oil Heaters tend to have a low thermal performance, in the range of 85 to 90%.
Cold Spot corrosion problems
All fuels contain acidic elements. When you burn the fuel and cool flue gas too deep, then – depending on the fuel type – the acidic elements will become corrosive and the installed heat exchangers will suffer from cold spot corrosion due to the relatively cold metal surface temperatures. This limits heat recovery. If you can prevent this problem, enhancing further thermal efficiency is possible. This results in extra energy savings.
How to recover more waste heat from your Thermal Oil Heater
Waste heat recovery systems for Thermal Oil Heaters
Polymer Air PreHeater
Heat up combustion air by extracting heat from flue gas. The air preheater is corrosion resistant & anti-fouling and is easy to maintain and clean.
Industries with Thermal Oil Heaters
Case study: Industrial Cookie Bakery
20% gas reduction
The industrial bakery has the ambition to reduce energy consumption of the manufacturing process. In the production process of cookies many fatty ingredients are used like butter and chocolate. In the oven fouling baking vapours are extracted and currently released to the atmosphere at high temperature. The bakery would like to recover heat from these vapours to reduce overall energy consumption.
Because of the smooth surface of the polymer tubes the HeatMatrix polymer APH has a low tendency of fouling. This aspect in combination with an in-situ cleaning system made it the perfect combination for heat recovery at this bakery. One heat exchanger was installed which cooled down all the baking vapours from the oven.
Circulation air send to the oven is preheated from 15 to 103°C, which resulted in a heat recovery of 143 kW and a reduction of the oven gas consumption of 20%.