Carbon dioxide absorption and mineralization regeneration coupling filling integrated method and system

• Main Authors: ZHAO RUI, GU YONGZHENG, LIU YONGPING, XUN ZHIWEI, ZHENG XUFAN, ZHAO GUANGSHEN, HUANG YAN, XU DONG, YU XUEHAI, WANG LIANG, HAN TAO, LI JIANXIN
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2024
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SEPARATION; TRANSPORTING

The invention relates to the field of carbon dioxide capture and resource utilization in the thermal power industry, and discloses a carbon dioxide absorption-mineralization regeneration coupling filling integrated method and system. The method comprises the following steps: sequentially carrying out cooling and alkali washing on carbon dioxide flue gas; the treated carbon dioxide flue gas is in reverse contact with an organic amine solution, and a rich solution is obtained; reacting the rich solution with a substance containing calcium and magnesium ions, and then performing filtration and solid-liquid separation on a reaction product to obtain a solid part and a liquid part; under an alkaline condition, mixing the solid part with solid waste and water for reaction to obtain a gel material; the gel material is conveyed to a waste mine or a goaf, and injection filling is carried out; according to the method, rich liquor obtained by absorbing and capturing CO2 by the organic amine absorbent reacts with calcium