简要介绍了几种现有的船舶废气脱硫技术，着重对这几种技术的生命周期成本进行了核算，通过对比得出：镁基-海水法船舶废气脱硫技术设备的购置、运行费用比其他几种技术更低，且投资回报率更高，是一种非常经济的国际履约方式，其市场需求巨大，市场前景广阔。%This article briefly introduces several existing shipping exhaust's desulphurization technologies and focuses on the life cycle costs of these technologies .Through the comparison ,the article finds that the cost of the purchases and operation of magnesium -base seawater desulphurization technical equipment are both the lowest compared with other technologies ..Meanwhile , there is a better rate of return on investment . Therefore , magnesium - base seawater desulphurization system is a very economical way of fulfilling the Convention ,which has huge market requirement and broad market prospects .
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