Granular-bed filtration assisted by filter-cake formation: 4. Advanced designs for panel-bed filtration and gas treating

Also reported is a new “panel filter” comprising downwardly sloping “filter trays” mounted one above another, each tray displaying a gas-entry-face renewable either by puffback or hammer blow. For filtering a given flow of gas, a panel of filter trays can occupy smaller ground area than louvered beds, can be assembled from fewer elements, and can afford a lower pressure drop.