Polymer or Stainless Economiser - ECO
Recover additional heat
Prevent corrosion and fouling problems
Reduce your costs and CO2 emissions
The Economiser recovers heat from flue gas or exhaust air
Heat up boiler feed water or make-up water
The polymer or stainless steel ECO 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.
Heat up process water
The flue gas from processes like incinerators, fired heaters or kilns can be recovered with the polymer or stainless ECO. The recovered heat can be used to heat up process water for usage in process steps that require hot water.
Corrosion and mechanical failures limit heat recovery from flue gas or exhaust air
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.
Corrosive flue gas is no longer a show-stopper for heat recovery
Benefits of the polymer or stainless steel ECO
- Corrosion resistance
The ECO 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 ECO can cope with highly corrosive environments.
- Free from mechanical stresses
The unique design of the ECO prevents mechanical stresses resulting from thermal expansion. This makes this economiser a robust and reliable solution.
The low propensity of the applied polymer to bind in combination with the possibility of in-line cleaning make the polymer ECO suitable for fouling services.
Polymer & Concentric Tube (PCT) Technology
Easy cleaning and maintenance
Cleaning with water
The polymer or stainless steel ECO has minimal maintenance requirements.
|F:||3.000 – 500.000+ kg/hr|
|Tdesign:||250 °C ( polymer economiser)|
|Pdesign water:||30 barg|
|Pdesign flue gas:||150 mbar|
The ECO is designed in such a way that the tubes can thermally expand without stresses acting on the tubes. The economiser can be heated-up and cooled down instantaneously, there is no time dependent heating profile required.
The design of the HeatMatrix ECO is based on the requirements and process data of a specific situation. The dimensions are derived from the hot and cold flows, temperatures and composition of the flows.
The construction materials are selected based on the flue gas composition.
|Stainless steel||For low to modest corrosive environments|
|Polymer||For surfaces in contact with very corrosive flue gas|
The Polymer or Stainless ECO can be applied in these industries and thermal processes
Your path to lower CO2 emissions, energy consumption and costs
Our process engineers assess the technical feasibility of additional heat recovery on your process. The potential reduction in CO2 emissions, energy consumption and costs is determined.
Heat exchanger design and Business Case
A proposal is made with all technical details and economic assessment with payback time. You have everything for budget approval.
Realize Project delivery
HeatMatrix designs, delivers and -upon request- installs a complete heat recovery system in your factory. For bigger projects we work with your preferred Engineering company from start to implementation.
What is the maximum temperature the ECO can withstand?
The design temperature of the polymer lined ECO is 250ºC. For flue gas or exhaust air of higher temperatures, a stainless steel or a combination of stainless and polymer ECO is applied.