| 摘要 |
<p>PURPOSE:To increase the recovery rate of the product by introducing a gas contg. CO2, moisture, and S components into an adsorption tower, carrying out low evacuation and high evacuation to recover CO2, and desorbing the moisture and S components with a gas passing through the adsorption tower. CONSTITUTION:The gas contg. CO2, moisture, and S components such as blast furnace gas is introduced into an adsorption tower 1A through a compressor 2 and pressurized to adsorb CO2. After the adsorption stage is finished, the pressure of the tower is reduced to the atmospheric pressure to exhaust the gaseous impurities in the tower, and then the pressure is reduced to 700Torr by a pressure reducing machine 3 to discharge the gaseous CO2 contg. impurities. The pressure in the adsorption tower is then further reduced by the pressure reducing machine 3 to desorb CO2, and the CO2 is recovered as the gaseous product. The adsorption tower passing gas discharged by the adsorption stage in another tower 1C is introduced into the adsorption tower 1A to desorb the moisture and S components, and the inside of the tower is simultaneously pressurized. These stags are repeated in the respective towers, and CO2 is continuously recovered.</p> |
