FILTERING PLANT WITH SELF-REGULATING CLEANING Russian patent published in 2018 - IPC B01D46/02 B01D41/00 

FIELD: separation.

SUBSTANCE: invention relates to a filter plant with self-regulating cleaning and can be used in the field of blowing coal dust. Filter plant comprises a gas feed which supplies a cleaning medium at a feed pressure pN, a cleaning tank which is fed by the gas feed and in which the cleaning medium is stored at a cleaning pressure pT, wherein pN>pT, a pressure filter with a filter pressure pF, which is cleaned cyclically or in a manner dependent on differential pressure by the cleaning medium from the cleaning tank. Filter plant has a control loop comprising a first differential pressure regulator which is located between the gas feed and the cleaning tank, a first control that drives the first differential pressure regulator when the lower differential pressure is reached, a second differential pressure regulator located in the outlet line of the cleaning tank, a second control unit that drives the second differential pressure regulator when the upper differential pressure is reached, a positive active line that hydrodynamically connects the first control unit to the second control unit and the cleaning tank, a negative active line that hydrodynamically connects the first control unit to the second control unit and the pressure filter. Overpressure of the cleaning pressure pT with respect to the filtration pressure pF is applied to the first control unit and the second control unit, and the first control unit drives the first differential pressure regulator when the overpressure is below the lower differential pressure, and the second control unit drives the second differential pressure regulator when the overpressure is above the upper differential pressure.

EFFECT: technical result is an increase in the cleaning efficiency of bag filters.

7 cl, 1 dwg