The hot gas filtration units in the Tri-Mer UltraCat system are unique.
The filters start as a slurry of refractory fibers and are vacuum formed into shape. They are very lightweight, approximately 90% open with much lower pressure drop. They are also self-supporting without any filter cages, robust, and have a useful service life of 5 to 10 years.
Ceramic filters as industry knows them best are often called “candles” because of their solid tube shape. They have been a staple of air pollution control for decades. The original ceramic filters were manufactured from refractory grains such as alumina and pressed into the basic candle shape–a tube with a closed, rounded bottom and a flange at the top.
The filters used in the UltraCat are very different in their design, service life, and multi-pollutant functionality. UltraCat hot gas filtration controls SO2, HCl, NOx and particulate in a single very efficient system, and can be adapted to handle mercury and dioxins as well.
Filters are manufactured in various lengths, but it is the 3-meter (10-ft.) filters that have been popular throughout industry for the last 25 years. The filters are placed in a housing similar to a baghouse.
More than 400 installations in Europe, Japan, and the U.S. use catalytic filter technology.