SYSTEM FOR PURIFYING OFF-GAS AND METHOD FOR PURIFYING OFF-GAS Russian patent published in 2021 - IPC F01N3/04 

FIELD: treatment of gases.

SUBSTANCE: proposed are a system (1) for purifying off-gas and a method for purifying off-gas (OG) on board of a ship. The system (1) for purifying off-gas comprises a first subsystem (3), including a scrubber block (15) containing a scrubber (17) adapted to flush the off-gas (OG) with a scrubber fluid, and a centrifugal separator (9) in communication with the scrubber block (15) for receiving the scrubber fluid after flushing and separating said fluid into a first and a second fractions, wherein the second fraction is more polluted than the first fraction. The system (1) for purifying off-gas is characterised by additionally containing a second subsystem (5) including a membrane filter (21) in communication with the centrifugal separator (9) for receiving the output of the first fraction from the centrifugal separator (9) and separating said fraction into a third and a fourth fractions, wherein the fourth fraction is more polluted than the third fraction.

EFFECT: invention allows purification of off-gas by means of a shipboard system.

13 cl, 2 dwg