Dry overspray separation technology started taking paint shops by storm in 2010. The EcoDryScrubber has revolutionized paint overspray separation by dispensing entirely with water, wastewater treatment and additional chemicals.
Dry separation is fully automatic and almost 100% effective, with maximum energy efficiency.
The EcoDryScrubber removes paint overspray in a single filter stage using finely powdered limestone and highly efficient HEPA12 filters. Powdered limestone binds the paint mist flowing into the filter modules together with the process air from the spray booth. HEPA12 filters remove particles from the process air. Saturated powdered limestone is sucked out through a line system fully automatically, without interrupting the process.
Whereas conventional wet scrubbing must be monitored constantly and the chemicals used matched to the process, our intelligent control system design continuously adapts the dry separation process to the current painting tasks. This minimizes manual intervention while optimizing powdered limestone consumption.
Between 80 and 95 percent of the filtered process air can be reused with this procedure. There is largely no longer any need for energy-intensive fresh-air conditioning. Additionally, unlike with conventional wet scrubbing, the use of water and chemicals can be eliminated entirely. There is no paint sludge, no fine dust emissions and no need to dispose of hazardous waste. The powdered limestone can be reused as a secondary raw material in applications such as the cement industry or for flue gas desulfurization in power stations, meaning this cycle is virtually free from waste.
The EcoDryScrubber’s high energy efficiency has won it multiple awards, including Baden-Württemberg’s Environmental Prize, the SURCAR Innovation Award and the Automotive News PACE AWARD in the “Manufacturing Process and Capital Equipment” category.
It is no surprise then that Dürr’s EcoDryScrubber is now used in more than 100 painting lines.