Capturing carbon dioxide content in flue gases, comprises e.g. contacting flue gases with adsorbent material, contacting with material loaded with carbon dioxide flow, and then introducing adsorbent material in saturated carbon dioxide

摘要

Capturing carbon dioxide content in flue gases, comprises e.g. (a) contacting the flue gases with an adsorbent material to produce fumes depleted carbon dioxide and the adsorbent material loaded with carbon dioxide, (b) contacting with the adsorbent material loaded with a portion of carbon dioxide flow, (c) then introducing the adsorbent material in a saturated carbon dioxide to release a flow comprising carbon dioxide, and (d) introducing into the adsorbing material depleted in carbon dioxide, a gas from the combustion fumes and the fumes depleted in carbon dioxide. Capturing carbon dioxide content in flue gases having a partial pressure of carbon dioxide of 0.03-0.4 bar, comprises (a) contacting, at an absolute pressure of 1 and 2 bar, the flue gases with an adsorbent material to produce fumes depleted carbon dioxide and the adsorbent material loaded with carbon dioxide, where the adsorbent material has a three-dimensional structure with a zeolitic imidazolate framework (ZIF) type sodalite topology that has been defined international zeolite association (IZA), zinc (Zn 2 +) ions are bound to ligands substituted imidazole 4-carbaldehyde for the stoichiometry of diimidazole zinc (Zn(Im) 2), and the ligand substituted imidazole 4-carbaldehyde has a structure of formula (I), (b) contacting with the adsorbent material loaded with a portion of carbon dioxide flow comprising carbon dioxide to obtain a saturated carbon dioxide adsorbent material, (c) then introducing the adsorbent material in a saturated carbon dioxide under an absolute pressure of 0.01-0.3 bar to release a flow comprising carbon dioxide and produce an adsorbent material depleted in carbon dioxide at an absolute pressure of 0.01-0.3 bar and introducing into the adsorbing material depleted in carbon dioxide, a gas from the combustion fumes and the fumes depleted in carbon dioxide to raise the pressure of the adsorbent material to a value of 1-2 bar. R : H, CH 3, C 2H 5, propyl or halo. [Image].