| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method and apparatus for solidifying, separating, capturing, and storing CO2 in exhaust gas from a ship engine using cold of LNG.SOLUTION: To cool exhaust gas from a ship engine, cold volume obtained from an LNG is insufficient for separation of CO2, so that required cold is produced by a combination of a compressor 6 and an expansion turbine 20 within an apparatus, the cold is circulated and collected within the apparatus, and energy saving is achieved. At that time, a total heat exchanger 5 first removes water contained in the exhaust gas that is a high heat load, accumulated water and ice are fused with internal circulation gas and removed, and heat of fusion is collected and used for removal of the water in the exhaust gas. Through these several stages of water removal, the thermal load of the contained water is greatly reduced. In a state of the exhaust gas, CO2 is solidified, and CO2 particles are separated and stored in a tank 25. During leakage of the LNG, seawater is used to evaporate the LNG simultaneously with deactivation of the apparatus so as to continue the supply of main engine fuel.</p> |
