GAS CLEANING BAG FILTER WITH SHORT-PULSE BLOWING Russian patent published in 2012 - IPC B01D46/02 

FIELD: process engineering.

SUBSTANCE: invention relates to gas cleaning equipment and may be used in various branches of industry for cleaning two-phase gas flows with solid particles. Proposed bag filter with short-pulse back blowing consists of casing, filtration elements, cleaned gas collector, blowing gas pipeline and nozzles. Every filtration element is made up of two aligned cylindrical sleeves. Gas to be cleaned is forced via outer sleeve inside and, outside, via inner sleeve. Filtered dist settles on outer sleeve outer surface and inner sleeve inner surface. Intersleeve space is limited by annular bottom from below and open from above to release cleaned gas into cleaned gas collector via nozzle with annular cross section changing into circular cross section so that passage from said space into said collector form so-called Laval nozzle. Back blowing is performed from blowing gas pipeline via shut-off valves and back blowing nozzles arranged aligned above said nozzles.

EFFECT: higher filtration efficiency and reliability.

1 dwg