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Triboelectrically-induced reduction of fine dust during cutting processes

Project Leader
Wimmer Rupert, BOKU Project Leader
Duration:
01.07.2018-31.12.2020
Programme:
BRIDGE 1
Type of Research
Applied Research
Staff
Leiter Lena Maria, Project Staff
Hellmayr Raphaela, Project Staff
Georgiades Maria, Project Staff
BOKU Research Units
Institute of Wood Technology and Renewable Materials
Funded by
Austrian Research Promotion Agency, Sensengasse 1, 1090 Wien, Austria
Abstract
All cutting processes deliver respirable dust particles. These particles are currently insufficiently exhausted, which may cause at permanent exposure severe health damages. We proved that triboelectric charging during cutting processes leads to repulsive forces of wood particles, which provokes a greater dust dispersion, and a reduced dust sedimentation process. The idea is through targeted opposite-poled charging of wood particles, at the time when the particles emerge - directly at the cutting tool, to create targeted attraction forces among the particles. The application-focused basic research approach is dedicated to triboelectric rankings, to charging phenomena of ligno-cellulosics, to separation behavior at various conditions, and to visualization of dynamic particle movements. Particle agglomeration is leading to reduced fine-dust loads, to faster particle sedimentation, to reduced “dust clowd” formation, and to a better dust removal, in combination with an increased energy efficiency of suction systems, due to a reduced dust-filter loading.
Keywords
Wood industry;
dust removal technology; wood processing; dust loading; dust reduction;
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