Compliance with the OSHA requirement for Grade "D" Breathable Air can be accomplished with the use of a Quality Air Breathing System - Model 50 SL, manufactured by Martech Services Company.
Recuperative incinerators such as the Ecopure TAR from Dürr are best suited for cleaning exhaust airflows from dryers because the heat energy contained in the clean gas can be re-used in the drying process.