| 摘要 |
The process for capturing carbon dioxide contained in combustion fumes, comprises burning a fuel to produce combustion fumes, contacting the fumes with an absorbent solution to produce an impoverished fumes of carbon dioxide and a charged solution of carbon dioxide, regenerating the charged solution of carbon dioxide in a thermal-regenerating column to produce a regenerated absorbent solution and a gaseous effluent rich in carbon dioxide (5), and cooling the gaseous effluent (10-50[deg] C) rich in carbon dioxide to obtain a gaseous fraction rich in carbon dioxide, which is evacuated. The process for capturing carbon dioxide contained in combustion fumes, comprises burning a fuel to produce combustion fumes, contacting the fumes with an absorbent solution to produce an impoverished fumes of carbon dioxide and a charged solution of carbon dioxide, regenerating the charged solution of carbon dioxide in a thermal-regenerating column to produce a regenerated absorbent solution and a gaseous effluent rich in carbon dioxide (5), cooling the gaseous effluent (10-50[deg] C) rich in carbon dioxide to obtain a gaseous fraction rich in carbon dioxide, which is evacuated, and introducing a liquid fraction in top of the regeneration column by reflux (7). The liquid fraction is reheated by exchanging heat with the gaseous effluent and the combustion fumes. The gaseous effluent is cooled at an intermediate temperature (40-80[deg] C) to produce liquid fraction and gaseous flow, then the gaseous flow is cooled at 10-50[deg] C to produce gaseous fraction and liquid fraction. A bottom of the thermal-regenerating column is heated using a reboiler. The absorbent solution comprises water and amines. The combustion fumes are cooled by indirectly exchanging the heat with sea water. The combustion fumes are produced by a thermal power station of electricity production, a blast steel furnace, a cement kiln or glass furnace. |
