September 2004

Refining Developments

Optimize profitability when blending diesel

Consider using improved cetane prediction equations that can enhance your bottom line

McDonald, J. R., Baker Petrolite

Changes in road diesel emission standards and innovative engine designs are driving needed changes in required distillate fuel composition. A cetane number, as measured by test engine method ASTM D-613, is becoming a more critical parameter for emissions control. Meeting stricter environmental standards for higher cetane fuels will be a strong motivator for more refiners to utilize cetane improvers (CI) in the near future.1 This is one cost-effective way to help satisfy minimum fuel quality requirements. A common choice for cetane improvement is 2-ethylhexyl nitrate (2-EHN). Historically, improvers, such as 2-EHN, promote ignition by readily decomposing under typical engine temperatures. Thi

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