METHOD AND DEVICE FOR PURIFYING EXHAUST AIR PRODUCED DURING WOOD PROCESSING Russian patent published in 2018 - IPC B01D47/00 B01D53/14 

FIELD: wood-working industry.

SUBSTANCE: invention relates to a method and apparatus for purifying exhaust air. Device for purifying exhaust air, in particular exhaust air from processing wood materials, with a first circulation, comprising at least the following elements: a scrubber for scrubbing the exhaust air with a scrubbing liquid, a droplet separator to separate exhaust air and scrubbing liquid, a reprocessing container to collect the separated scrubbing liquid and to remove solids from scrubbing liquid; and a feed device to return scrubbing liquid from reprocessing container to scrubber, wherein the device has a second circulation, comprising at least the following elements: a withdrawal line to withdraw at least a sub-stream of scrubbing liquid from the first circulation, a desorber, in particular a column desorber, for removing organic substances from the scrubbing liquid withdrawn, through a stripping gas carried in co-current or counter-current with the scrubbing liquid; and a re-circulation line for returning scrubbing liquid at least partially to the first circulation after removal of organic substances.

EFFECT: method and device for purifying exhaust air is provided.

17 cl, 2 dwg