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HeatMatrix - Model ECO -Polymer or Stainless Economiser
Heat recovery from flue gas or exhaust air. Heat up boiler feed water, make-up water or process water. Corrosion and fouling resistant.
The polymer or stainless steel economiser preheats the boiler feed water from the deaerator or make-up water. By using preheated boiler feed water the fuel consumption is reduced. In other situations the make-up water that is fed to the steam cycle, is preheated.
The flue gas from processes like incinerators, fired heaters or kilns can be recovered with the polymer or stainless economiser. The recovered waste heat can be used to heat up process water for usage in process steps that require hot water.
The polymer or stainless steel economiser preheats the boiler feed water from the deaerator or make-up water. By using preheated boiler feed water the fuel consumption is reduced. In other situations the make-up water that is fed to the steam cycle, is preheated.
The flue gas from processes like incinerators, fired heaters or kilns can be recovered with the polymer or stainless economiser. The recovered waste heat can be used to heat up process water for usage in process steps that require hot water.
Flue gases contain acidic elements when using sulphur containing fuels like refinery gas, biogas, coal, oil and biomass. Exhaust air may contain acidic components from the product that is dried or baked.If you want to recover more heat and cool through the acid dew point, acids will condense on the cold tube surface as a result of the cold liquid flowing through the tubes. This leads to corrosion in conventional metal economisers.
Resistant for corrosive flue gas and exhaust air
The economiser can be made from bare stainless tubes or tubes lined with polymer. Based on your application we select the most suitable construction material. The polymer economiser can cope with highly corrosive environments.
Free from mechanical stresses
The unique design of the economiser prevents mechanical stresses resulting from thermal expansion. This makes this economiser a robust and reliable solution.
Prevent economiser blocking
The low propensity of the applied polymer to bind in combination with the possibility of in-line cleaning make the polymer economiser suitable for fouling services.
The economiser consists of concentric tubes. Cold water is fed via the inner tube. Heat is transferred via the outer tube. The concentric tubes guarantee a proper flow path for the water to maximise heat exchange efficiency. The tubes are fixed in one tube sheet only. The other side of the tubes is free floating. In this way the tubes are not exposed to mechanical stresses.
For highly corrosive applications all parts of the interior of the heat exchanger are made from polymer. With this configuration the economiser prevents heat exchanger corrosion problems