A cool way to recycle solvents from exhaust-air streams
| By Chemical Engineering
Messer Group GmbH (Krefeld, Germany; edlinks.chemengonline.com/6516-531) has commercialized a liquid-nitrogen- (LNâ‚‚) based process for purifying exhaust air that contains high (100–1,000 g/m3) loads of chlorofluorocarbons (CFCs)…