Abstract
A novel process using a cascade of packed columns to separate submicron particles from gases with high efficiency is presented. The process is based on the enlargement of the submicron particles by heterogeneous condensation. The particle enlargement as well as the collection of the droplets is achieved in the packed columns. Each column of the cascade is trickled with water which is alternately colder or warmer than the gas. The temperature difference between the gas and the water is required to achieve supersaturation of the vapour and correspondingly droplet growth by condensation in each column. The performance of the process is evaluated by experimental investigations. The collection efficiency of a two-stage cascade is determined using different submicron particles, such as residual particles, quartz particles, and paraffin oil droplets. It is shown that high collection efficiencies can be obtained by this separation process, also at high particle number concentrations. Since a new supersaturation is achieved in each column, large droplets are formed which are collected at the packing material of the columns with high efficiency. Correspondingly, submicron particles are separated with high performance by cascading packed columns.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.