Membranes for Exhaust air Filtration

Until the 1980s, exhaust-air from industrial plants often entered the environment completely unfiltered. Gravity separators or scrubbers were essentially used for exhaust-air purification. Electric separators significantly increased the efficiency of exhaust-air purification systems after their introduction.
Nevertheless, very high amounts of toxic and carcinogenic fine dust were released into the environment from industrial plants. Filtration separators were already state of the art in other applications, but with the usual materials only depth filters could be produced, which saturated very quickly at very high fine dust loads and then had to be replaced – which was not feasible for high continuous dust volumes due to the maintenance effort with constant downtime.

With the development and introduction of highly effective filter systems, equipped with surface filters made of ePTFE membranes that were fully regenerable, a breakthrough in industrial dust removal was achieved. Since then, the majority of industrial plants have been equipped or retrofitted with this technology, thus significantly reducing fine dust emissions.

To protect people and nature, the further reduction of harmful emissions must be decisively pursued. Our multiFlon® membranes for exhaust-air filtration were developed with this in mind and offer outstanding separation performance thanks to their small pore size and extremely uniform distribution. They are chemically inert and can be used at high temperatures – perfect for adverse conditions. Due to the nevertheless good air permeability of the filter medium, efficient system operation is guaranteed.