With its new hot-gas filter technology, the pioneer in air pollution control is revealing the future of exhaust gas cleaning and dedusting. This opens up completely new system concepts for economical and environmentally friendly dust separation and pollutant reduction.
One of the many advantages is the high temperature resistance of the candle filters. While conventional bag filters with fabric media reach their limits at process temperatures of 260 °C, for hot-gas filters and their ceramic filter elements, even 500 °C is no problem.
Regeneration is performed based on the proven impulse cleaning system, which can be used to achieve extremely low differential pressures. Often, the temperature of the dust-laden exhaust gas is in the range between 300 °C and 500 °C, temperatures at which energy recovery is advisable. Thanks to the dust-free exhaust gas present here, more cost-effective and operationally safe heat exchangers can be used.
Encouraged by the success of the new hot-gas filter, Scheuch researchers are already working on how to develop the technology further to lower investment and running costs. The focus is on achieving the most compact design possible combined with a high level of operational safety. Branching off from that, the team is also working on new systems to reduce pollutants: For example, systems that combine filtration and catalytic denitrification in a single process step and increase the possible application temperatures to 1,000 °C.