Study of the necessity of sulfur content to less than 10 ppm in the diesel

• Main Authors: Han-wen chu, 朱漢文
• Other Authors: Jiunn-Fwu Lee
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/4gdg5n

碩士 === 國立中央大學 === 環境工程研究所碩士在職專班 === 94 === Abstract The Environmental Protection Administration (EPA) of Taiwan proposed the policy of low sulfur content in the diesel which set a standard for dieses to reduced sulfur content to less than 10 ppm on 2011. The objective of this study is to evaluate the impact of low sulfur content policy on the petroleum industry and ambient air quality. This study was conducted with the emission analysis and data colleted to show whether the sulfur content in diesel can significantly affect the pollution emission. We observed that the pollution emission is almost the same when the sulfur concentration down to 150 ~ 10 ppm. Our finding indicates that improving the ambient air quality by reducing the sulfur content down to less than 10 ppm, the extra financial pressure on refiners could result in under-investment and tightening of the supply. Despite the fact that the average cars’ life in Taiwan is 7.7 years, current cars without install new engine will cause more pollution emission. If a car with NOx storage catalyst system need effective reduction of NOx. Higher levels of sulfur in the fuel result in faster catalyst deactivation and more frequent regeneration. Diesel engine passenger cars have already imported from Europe in 2005. The sulfur concentration in the fuel must be reduced to “ultra low sulfur” to meet the requirement of the new engine and after-treatment system.