中国微藻航空煤油制备潜能及CO2减排

综合考虑中国各地温度变化、水资源和CO₂的供给能力等因素,分析了中国适合微拟球藻规模化养殖的地区;根据2013年沿海地区燃煤发电排放CO₂量,结合蓬莱地区微拟球藻规模化养殖的实际数据,预测了中国微藻的年产量潜力及在现有技术水平下利用这些微藻原料可制备航空煤油的潜力;并采用全生命周期模型GREET计算了微藻航空煤油相比传统石油基航空煤油在全生命周期内中可减少CO₂的排放量。结果表明:目前中国具有每年8894万t的微藻养殖潜力,这些微藻共可制备航空煤油1917万t;与传统航煤相比,制备1 t微藻航空煤油在全生命周期内相比传统航空煤油可降低CO₂排放2.28 t。

Potential production of microalgae aviation fuel and CO2 emissions reduction in China

Based on the variation of temperature and the available supply of water resource and carbon dioxide, the appropriate location for Nannochloropsis cultivation in China was investigated in this study. The potential of microalgae and microalgae aviation fuel annual yield is also predicted according to carbon dioxide emissions from coal-fired power plant and the data of Nannochloropsis cultivation at Penglaiin 2013. The results of life-cycle analysis model GREET indicate that the microalgae aviation fuel could reduce the carbon dioxide emission compared with the fossil aviation fuel in life cycle assessment. China could produce 88.94 million t microalgae that could be converted to 19.17 million t aviation fuel every year. Compared with the fossil aviation fuel, production of one t of microalgae aviation fuel can reduce 2.28 t of carbon dioxide emissions according to the assessment of the whole life cycle.