Physical operating principles

The functional principles of HANDTE wet dust separators are based on the transfer of particles from a particle-laden gas stream to a scrubbing liquid. The particles are collected on the droplets of the scrubbing liquid, the particle-laden droplets then being separated from the gas stream. This presupposes the generation of a sufficiently large interfacial area between the gas (air) and liquid phases.
The scrubbing liquid is injected into the gas stream and the gas flows around the liquid droplets. The particle inertia forces the particles to move to the liquid surface for collection. Separation is further enhanced where finest particles are involved by the diffusion effect/Brownian motion.

Best results are achieved when the scrubbing liquid is injected into a HANDTE venturi with an adjustable throat. The ensuing pressure jump generates a high relative velocity between dust particles and the liquid interface. The surface tension of the liquid is subdued, and particles collect on the scrubbing liquid droplets.

The dust-laden scrubbing liquid is separated from the cleaned gas stream through centrifugal forces in the upstream centrifugal mist separator.