CAJ | 학술논문

以京津冀地区燃煤制天然气(SNG)锅炉为对象,基于生命周期角度对其大气污染物排放进行了分析.结果显示,燃SNG锅炉全生命周期排放少于燃煤锅炉,但存在着污染向 SNG 产地转移的效应.为进一步评估 SNG 防治大气污染的效果,对京津冀地区燃煤锅炉改造为燃SNG锅炉,以及燃煤锅炉末端排放治理2种方式在生命周期排放、资源消耗、经济性3方面进行了对比.结果显示,在全生命周期过程中,SNG锅炉相比末端处理方式有更多大气污染物排放,但若忽略污染转移现象而只考虑京津冀地区,则 SNG 锅炉相比末端处理排放更少;燃 SNG锅炉相比末端处理会消耗更多的能源和水资源;SNG 锅炉同时需要更高的投资和成本.以煤制天然气作为防治大气污染的选择需要谨慎考虑,不宜过度发展.
이경진기지구연매제천연기(SNG)과로위대상,기우생명주기각도대기대기오염물배방진행료분석.결과현시,연SNG과로전생명주기배방소우연매과로,단존재착오염향 SNG 산지전이적효응.위진일보평고 SNG 방치대기오염적효과,대경진기지구연매과로개조위연SNG과로,이급연매과로말단배방치리2충방식재생명주기배방、자원소모、경제성3방면진행료대비.결과현시,재전생명주기과정중,SNG과로상비말단처리방식유경다대기오염물배방,단약홀략오염전이현상이지고필경진기지구,칙 SNG 과로상비말단처리배방경소;연 SNG과로상비말단처리회소모경다적능원화수자원;SNG 과로동시수요경고적투자화성본.이매제천연기작위방치대기오염적선택수요근신고필,불의과도발전.
Life-cycle atmospheric emissions were assessed for the use of Synthetic natural gas (SNG) in refitted coal-fired boilers in Beijing-Tianjin-Hebei. Results show, SNG-fired boilers emit less pollution than traditional coal-fired boilers in the life cycle, while also effects a massive pollution transfer. Further analysis involves the comparison between the emissions from coal-fired boilers with a conventional treatment and SNG-fired boilers. This comparison includes three aspects: life-cycle emissions, resource consumption, and techno-economical analysis. Results show that SNG-fired boilers emit more atmospheric pollutants than the conventional treatment in the life cycle, in addition to consuming more energy and water, having a higher refit investment and operating cost. We conclude that the policy of SNG use for haze prevention should be cautiously implemented, and coal-based synthetic natural gas should not be supported overly.