For gas applications, we design Poroplate ® elements to be surface-loading filters. In this configuration, the filtration mesh layer is located on the upstream side of the media in the normal flow direction. Drainage and support mesh layers are below. This design provides a filter with very little pressure drop, affording the system operator longer on-stream cycles. As the particles contact the filter, they are retained on the surface of the filter media, not deep in the pores as in ceramic or sintered powder elements. When the elements are back-pulsed or cleaned, the retained particles (filter cake) release easily and the filter element returns to like-new condition. Our rigid multi-layer design withstands constant back pulsing. The sintered media will not tear, thus preventing catalyst or contaminant particles from bypassing downstream.
Hot gas is often processed in environments reaching 900° C with high chlorine gases. Poroplate® filter tubes made in Inconel® alloy have the metallurgical characteristics and mechanical strength to withstand this harsh working environment.