MUMBAI, India, Sept. 26 -- Intellectual Property India has published a patent application (202411018405 A) filed by Council Of Scientific And Industrial Research, New Delhi, on March 12, 2024, for 'a method for capturing co2 from air using phase change amines.'
Inventor(s) include Shadab Alam; Sumana Chenna; Soujanya Yarasi; Sudipta De; Nettem Venkateswarlu Choudary; and Pravin Raybaji Likhar.
The application for the patent was published on Sept. 26, under issue no. 39/2025.
According to the abstract released by the Intellectual Property India: "The present invention discloses a continuous process for the direct capture of CO2 from the atmospheric air. This method involves the use of phase change amine (solid-liquid) absorbents with suitable solvents, yielding efficient CO2 capture from air. The method comprises the ensuing stages: (i) a continuous bubbling of air through amine solution within a multi-impeller absorber; (ii) the liquid amine absorbent, present in sufficient quantity and concentration, reacts with a significant portion of the CO2 present in the air; (iii) the solvent, present in sufficient quantity and concentration, dissolves the amine; (iv) subsequent formation of a solid-liquid slurry with absorbed CO2 in amine solution; (v) separation of solid from the amine solution in a solid-liquid separation tank; (vi) conveyance of the solid slurry to a desorber; (vii) CO2 desorption by jacketing the desorber with hot fluid or directly bubbling a fraction of the captured CO2 as hot fluid; (vii) subsequently raising the temperature to a degree suitable for effective desorption of CO2 from the solid slurry while simultaneously regenerating the amine; (ix) recycling the regenerated amine back to the absorber; and (x) compressing the desorbed CO2 gas suitable for sequestering or utilization. This cyclic approach establishes a continuous method for capturing CO2 directly from air, characterized by significantly reduced energy demand."
Disclaimer: Curated by HT Syndication.
