HeatMatrix - Industrial Dryers
Fouling and corrosion problems limit heat recovery. Polymer economisers and air preheaters are corrosion resistant and have in-line cleaning.
Dryer efficiency can be improved with up to 20%, by using a polymer air preheater or economiser.
Every 1% efficiency increase in your Dryer, results in 1% CO2 emission reduction.
The additional waste heat that is recovered is applied to heat up air entering the Dryer or heating up process water.
Heat recovery from the exhaust air stream from a drying process is difficult due to the fouling behavior of dust and product contaminants present. It is a challenge to keep the exchangers clean and to prevent condensate flowing back to the Dryer.
The moisture in the exhaust air in combination with corrosiveness of the dried material can create corrosion problems. Carbon steel and even stainless steel will quite often not provide the required corrosion resistance. In food applications the minimum standard is stainless steel.
The most important question is what to do with the recovered heat from the Dryer. The simplest and most economic solution is direct integration of the heat which means preheating the fresh air that enters the Dryer. The simultaneous presence of waste heat and need for heat in combination with short distances makes this the ideal solution. To prevent corrosion and deal with fouling, a polymer air preheater which is corrosion resistant and has good anti-fouling properties is applied.
Other heat users could also be present on your site, like process water, cleaning water or building heating. To prevent corrosion and deal with fouling, a polymer economiser which is corrosion resistant and has good anti-fouling properties is applied.