Nanoparticle Collection by a Lab-Scale Spray Scrubber Designed for Fume Treatment under Incineration Conditions

In flue-gas treatment line of hazardous waste incineration, the scrubbers are a technology dedicated to the absorption of acid gas. This technology also permits to collect a part of the particles contained in the flue-gas mainly by Brownian diffusion, impaction, interception, thermophoresis, diffusiophoresis or turbophoresis mechanisms. There are few experimental studies in the literature dealing with the performances of wet scrubbers regarding particle removal. Only one experimental study (Vasudevan et al., 1985) is dealing with particle collection at operating conditions close to those encountered in waste incineration regarding in particular gas temperature (200°C). No experimental study is identified regarding nanoparticle collection. The present study aimed to quantify the collection performances of a spray scrubber regarding nanoparticles, for representative incineration operating conditions and for similitude between the lab-scale and full size scrubbers encountered in flue-gas treatment line of waste incineration plants..