SYSTEM FOR CO CATCHING AND METHOD FOR CLEANING OF DEVICE WITH FILTERING MEMBRANE Russian patent published in 2010 - IPC B01D53/14 B01D53/62 

FIELD: technological processes.

SUBSTANCE: invention relates to technology for regeneration of filter, which accumulates soot and hard particles as a result of filtering solution that absorbs CO₂ used in device for removal of CO₂ from off-gas. System for catching of CO₂ comprises absorption column, which provides for extraction of CO₂ from off-gas, regeneration column providing for regeneration of strong solution, separating cylindrical reservoir, in which water vapor is condensed, which is contained in CO₂ gas discharged from regeneration column, and water is separated. Weak solution produced as a result of CO₂ extraction from strong solution is used repeatedly in absorption column. System also comprises device with filtering membrane, which filters solid phase that remains in weak solution and/or strong solution as a result of filter application. Absorbing CO₂ solution, having low concentration, is used to clean filter, and used solution is again returned to the system.

EFFECT: provision of possibility to use system for CO₂ catching in boiler that operates with coal combustion, continuous removal of large amount of solid phase, reduced losses of solution that absorbs CO₂.

9 cl, 8 dwg