The nonwovens process comprises mainly three steps and the process requires a corresponding amount of energy, mainly electrical or thermal. In thermal nonwovens processes, most medium- and long-term costs are caused by the thermal energy generated. The most important measures are initial moisture reduction, exhaust-air flow optimization and heat utilization, and a highly efficient dryer.
This article talks about the Eco-Heat heat-recovery and Eco-Air exhaust-air cleaning systems from Brückner Trockentechnik that allows considerable cost-cutting and is compatible with all dryer makes. The article asserts that the energy-saving potential in the energy required for water evaporation, exhaust air flow, and fresh air heating. The second and third area that could potentially save energy is reducing exhaust-air volume and controlling the exhaust-air volume flow and recovering of exhaust-air heat.
Brückner provides two systems for exhaust-heat recovery: air-to-air; and air-to-water. This heat-recovery system can be used with a range of dryers, ovens, and heat-treatment chambers. Using an air-to-air system, process heat can be reduced by 12 to 15 percent; and using heat-setting processes, by 33 to 36 percent.
Read More: Energy savings in thermal nonwovens processes
Reduce thermal energy costs in nonwovens bonding and finishing
Parameters present in nonwoven thermal energy processes
Energy saving potential in nonwovens bonding and finishing
Measures to reduce waste thermal enegy discharge in nonwovens production
Heat recovery and exhaust-air cleaning systems for nonwovens production