| 摘要 |
<p>PURPOSE:To recover carbon dioxide at a low cost by providing a de-CO2 equip ment which recovers CO2 in exhaust gas, constituting this de-CO2 equipment with a pressure type absorber and a regeneration tower and using boiler exhaust gas as a heat source for recovery. CONSTITUTION:In a carbon dioxide recovery type thermal power generation system, an LNG fuel from an LNG supply plant 1 is fed to a pressurized combustion boiler 3 and burned together with O2 rich air from an O2 rich air supply plant 2, and electrical energy is generated by the steam generated here at a thermal power plant 4. The exhaust gas is discharged into the atmosphere after it passed through a de-CO2 equipment 5. The de-CO2 equipment 5 consists of a pressure type absorber running under the pressurized condition using amine solvent or K2CO3 aqueous solution as absorbent, and with a regeneration tower which heats CO2 absorbed solution and makes CO2 emission. The exhaust gas of the boiler 3 is utilized as a heat source for regeneration in the regeneration tower, and a back-pressure turbine is driven by gas after CO2 was absorbed thereof.</p> |
