现行脱硫技术存在排放温室气体的隐患

工业革命以来,由于人类活动持续大量排放温室气体,使得全球出现了持续性的气候变暖趋势,而为了治理局部的和区域的SO2污染问题,大规模的脱硫活动在我国急速增加,这势必大幅增加CO2的排放,加剧气候变暖的进程,如果我国大型火电厂的脱硫率达到80%,按照2005年全国SO2排放量已经达到0.2549Gt计算,采用现行脱硫方法将每年向大气中排放0.088Gt的CO2。将占我国CO2年排放量的10%,对人类赖以生存的地球形成严重威胁。因而,需要研究脱硫的无碳工艺,以及碳捕集、碳储存、碳利用技术,树立综合的环境意识,在控制大气污染、减排温室气体与保护臭氧层方面寻找结合点。

Hidden Issue of Greenhouse Gas Emission in Existing Desulfurization Technology

The trend of global climate warming continued due to consecutive mass greenhouse gas emission from human activities since the industrial revolution. Desulfurizing activities for the purpose of solving local and regional sulfur dioxide pollution issue increased rapidly in mainland China. And these will trigger the rise of carbon dioxide (CO2) emission and accelerate the climate warming process. Suppose the desulfurizing rate of thermal power stations in mainland China reach 80%, according to sulfur dioxide (SO2) emissions (0.2549Gt) in 2005 of China mainland, these desulfurizing activities of thermal power stations will generate 0.088Gt carbon dioxide (CO2) into atmosphere each year, which amount to 10% of total carbon dioxide (CO2) emission and imperil the earth we live in. Therefore, Non-carbon desulfurizing, carbon capture and storage, carbon utilization techniques should be developed, a sense of a comprehensive range should be fostered to find an equilibrium amount the control of air pollution, reduction of greenhouse gas emissions and ozone layer protection.