HeatMatrix was founded in 2008 as a spin-off from Shell Chemical legacy Hexion located in Rotterdam, The Netherlands. After some initial years of product development and prototyping the proprietary technology of the robust honeycomb structured polymer tube bundle was ready for market introduction. Excellent performance was proven in harsh conditions of corrosive and fouling flue gas with realized energy savings over 5%.
Supported by a group of renowned investors HeatMatrix is expanding sales towards all European countries and the South-East Asia region. All activities are coordinated from the head office located in Geldermalsen, The Netherlands.
MISSION WASTE HEAT
A significant amount of waste heat remains untapped due to the limited applicability of metal heat exchangers due to (acid) dew point corrosion problems. The HeatMatrix polymer heat exchanger overcomes this limitation and enables energy savings by up to 10% per application. The HeatMatrix exchangers allow companies to save on energy costs and to fulfill their sustainability targets for a very attractive return on investment (Typical pay-out: 2 years).
In the search for energy efficiency in the industry waste heat recovery from flue gas (or off-gas) is one of the most interesting sources of hidden energy to look at. There are three reasons why a stack should be the first location to look at. Because;
- At a ‘stack location” significant amounts of primary energy are converted into heat at one single location.
- Flue gas is discharged into the atmosphere at relatively high temperatures between 150 and 250 °C.
- The outlet for recovered waste heat is nearby. Combustion air has a sufficient low temperature to absorb the currently discharged waste heat.
ACID DEW POINT CORROSION
Sulphur containing fuel is converted during combustion into acidic flue gas, because of the formation of sulphur dioxide and trioxide. The sulphur trioxide condenses in the presence of water vapour as sulphuric acid at a certain dew point temperature (‘acid dew point’). At this dew point a first small amount of highly concentrated sulphuric acid precipitates on the heat exchanger surface followed by rapid corrosion, fouling and break down of metal heat exchangers.
When flue gas temperature is further reduced beyond the acid dew point the concentration of sulphuric acid is reduced as well as its corrosiveness. It is important to note that the local flue gas temperature at the wall of the heat exchanger is lower compared to the bulk temperature. This local temperature at the flue gas side is leading for acid dew point corrosion problems.Read more
From a variety of exotic metals only tantalum can withstand acid dew point corrosion at acid dew points higher than 150 °C (see figure 3). The polymer that is applied for the HeatMatrix polymer tubes is resistant to acid dew point concentrations at any temperature and has a design temperature of 200 °C.
See the article in PetroChemical Technology Quarterly magazine 2014 for further reading.
The core of any HeatMatrix exchanger is a rigid matrix of connected polymer tubes. The thin walled tubes are supported over the full length by supporting ribs in order to provide strength and rigidity to the tube bundle. The connected tubes also provide a counter current flow pattern, which has the highest efficiency for heat transfer. The HeatMatrix exchanger can be scaled to any desired size due to the modular structure of the matrix.
The unique advantages of the HeatMatrix exchanger are:
- Corrosion resistant
- Counter current
REFERENCE CARLSBERG UKRAINE
Successful start-up of the HeatMatrix polymer LUVO air preheater installed on a bio-gas co-fired steam boiler
Recently Carlsberg Ukraine successfully installed a HeatMatrix polymer LUVO air preheater on their co-fired steam boiler at their Kiev site. Carlsberg is front runner amongst breweries with respect to energy savings and reducing carbon emission. An air preheater is a heat exchanger that recovers heat from hot flue gas by pre heating cold combustion air. In this case a polymer air preheater was installed downstream the existing economiser, which resulted in an energy saving of approx. 300 kW at full load. This saving corresponds with an overall efficiency improvement of approx. 3,5% and a CO2 emission reduction of approx. 600,000 kg/year.
Carlsberg Ukraine’s head of engineering Dmytro Markovskyy said “I’m very pleased with the performance of the HeatMatrix LUVO exchanger since it is operating according to specification and was delivered on time”.Read more
Director Global Sales and marketing of HeatMatrix Marco Oomen emphasises that it is a schoolbook example of the benefits of the HeatMatrix polymer LUVO air preheater. Many breweries have invested in conversion of waste water into bio-gas. Energy cost are reduced when this biogas is co-fired on existing steam boilers. However, due to a small concentration of sulphur in biogas the flue gas becomes acidic when cooled below the acid dew point (frequently around 110 °C). The polymer tube bundles of the HeatMatrix LUVO air preheater are resistant to acid dew point corrosion and are durable because of the rigid honeycomb configuration. Similar applications on biogas co-fired boilers can be found in the sugar, potato and paper industry.
ENGINEERING & DESIGN
The HeatMatrix engineers are available to assist you during scoping of your energy efficiency project. HeatMatrix has developed standard solutions ranging from lay-outs to packaged units and material selection for a cost effective and fast implementation of our project. Contact one of our engineers directly.