암모니아수 흡수제를 사용하는 분무탑의 이산화탄소 포집 기본특성에 관한 실험적 연구

국문 초록 (Abstract)

단일 노즐을 이용하는 CO₂ 포집용 분무탑의 기본적 특성을 실험적으로 구하였다. 다양한 조건 - 주입 기체 유량 및 농도, 주입 흡수제 유량 및 농도 등 - 에서 얻어진 포집성능을 포집효율 뿐만 아니라 재생에너지의 주요 결정요인인 CO₂ 포화도 측면에서 검토하였다. 다양한 조건들에서의 포집효율 변화는 흡수제(NH₃)와 CO₂ 의 상대적 유량비만의 단조증가함수로 잘 표현되었다. 포집후의 흡수제의 CO₂ 포화도 또한 NH₃/CO₂ 유량비만의 함수로 잘 정리가 되었으나, 포집효율과는 다르게 단조감소함수를 보였으며, 특히 CO₂ 포화도와 포집효율과의 상관관계를 보면 기존의 모든 연구들에서 포집효율이 증가할수록 CO₂ 포화도가 감소하였다. CO₂ 포화도는 낮은 포집효율 조건에서 최대 20-25% 수준이었으나, 90% 이상의 고효율에서는 10% 미만으로 매우 낮았다. 이는 높은 포집효율을 위해 사용되는 흡수제의 양이 과도하며, 다시 재생에너지가 과도하게 필요함을 의미한다.

다국어 초록 (Multilingual Abstract)

Experiments were conducted to identify basic characteristics of CO₂ capture using a spray tower with a single nozzle. Results were evaluated in terms of CO₂ saturation which is the main determining factor of regeneration energy, and capture efficiency under various operating conditions. Changes in the capture efficiency under various conditions are well expressed as a monotone increasing function of the relative solvent (NH₃):CO₂ flow rate. Although changes in CO₂ saturation are also well described as a function of the NH₃/CO₂ flow rate ratio, these are expressed as a monotone decreasing function, in contrast with the increasing function of CO₂ efficiency. In recent research on the relationship between CO₂ saturation and capture efficiency, CO₂ saturation was found to decrease when capture efficiency increased. In conclusion, the results show that the amount of solvent used for achieving high capture efficiencies is excessive, as is the amount of regeneration energy needed.

목차 (Table of Contents)

• 초록
• Abstract
• 1. 서론
• 2. 실험 장치 구성
• 3. 실험 조건
• 4. 실험 결과 및 고찰
• 5. 결론
• 참고문헌

참고문헌 (Reference)

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