BIOCATALYST-BASED CO STRIPPING TECHNIQUES AND SIMILAR SYSTEMS Russian patent published in 2024 - IPC B01D53/14 B01D53/62 B01D53/73 B01D53/74 F23J15/00 

FIELD: technological processes.

SUBSTANCE: present invention relates to the field of CO₂ trapping based on biocatalysts. Described is a method of stripping CO₂ for stripping CO₂ from a biocatalyst-containing absorbing solution with high content of CO₂ to obtain a biocatalyst-containing absorbing solution with low content of CO₂ and gas with high content of CO₂, including: generating a stripping gas from a portion of said biocatalyst-containing absorbent solution with low content of CO₂ in a stripping gas production unit which is a falling film evaporator, and bringing the biocatalyst-containing absorbent solution with high CO₂ content into contact with a stripping gas in the gas-liquid contactor to produce an absorbent solution with low CO₂ content, and a gas with high CO₂ content. Described is a method of stripping CO₂ for stripping CO₂ from a biocatalyst-containing absorbing solution with high content of CO₂ to obtain a biocatalyst-containing absorbing solution with low content of CO₂ and gas with high content of CO₂, including: generation of stripping gas from biocatalyst-containing absorbing solution containing high content of CO₂, and bringing the biocatalyst-containing absorbent solution with high CO₂ content into contact with the stripping gas in the gas-liquid contactor, which is a falling film evaporator, to obtain an absorbent solution with low content of CO₂, and gas with high content of CO₂. Also described is a method for capturing CO₂ based on a biocatalyst, comprising: bringing CO₂-containing gas into contact with an biocatalyst-containing absorbent solution to obtain a biocatalyst-containing absorbent solution with high content of CO₂, use of the CO₂ stripping method for desorption of CO₂ from a biocatalyst-containing absorbent solution with high content of CO₂, thus obtaining an absorbent solution with low content of CO₂ and gas with high content of CO₂. Disclosed is the use of a falling film evaporator for generating a stripping gas for stripping CO₂ from a biocatalyst-containing absorbent solution with high CO₂ content and obtaining a biocatalyst-containing absorbent solution with low content of CO₂.

EFFECT: reduced operating costs, increased stability and service life of the biocatalyst used in the process of capturing CO₂.

15 cl, 17 dwg, 3 tbl, 7 ex