Dust emissions caused by industrial processes are regulated at almost any place on earth by local statutory rules. In almost all cases the emission limits are still defined on a gravimetric basis in mass per volume units, e.g. mg/Nm³.
Obviously, these gravimetric limits are focussing more on coarser or bigger sized particles than on fine dust particulate matter, as the mass of the particle corresponds to the diameter in a dimension of around 10³. On the other hand, exposition of living individuals to the fine dust fraction (PM 2.5, PM 1) is considered very critical under aspects of health and environment. Fine dust is evident as a cause of illness, intoxication and premature death. For this reason, a significant reduction of the fine dust particulate matter should be accomplished, and this is possible by use of sophisticated cleanable filter media in particle filtration processes.
The lecture will demonstrate that the use of an optimized cleanable filter media results in an emission rate that cannot be detected by standard gravimetric methods. By means of a scattered light measurement device only few particles can be detected on the clean gas side of the filter equipment during the filtration process, that will not result in an amount of dust that can be determined by standard gravimetric means.
Filter media achieving that low emissions are newly developed...
Session: G5 - Surface Filtration I
Day: 23 October 2019
Time: 09:00 - 10:15 h