Incompatibility of Fischer−Tropsch Diesel with Petroleum and Soybean Biodiesel Blends

Mushrush, George W.; Willauer, Heather D.; Bauserman, Joy W.; Williams, Frederick W.

doi:10.1021/ie801867t

Cited by 10 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This active area of study has an impact on high efficiency clean combustion engines, the vanguard of advanced diesel engine design. In most standard vehicles, biodiesel concentrations are limited to a blend of 20% to mitigate the effects of its physical properties being different from those of standard diesel fuel (Mushrush, Willauer et al 2009), such as poor cold flow. In addition, biodiesel has a limited shelf life and can form precipitates and go rancid in storage, causing problems in distribution.…”

Section: Generation Of Fungible Fuels From Plant Oils and New Technolmentioning

confidence: 99%

“…Biodiesel, with its high oxygen content, mixes well with standard diesel, but not with purely paraffinic Fischer-Tropsch fuel. The aromatics in standard diesel solubilize the olefinic chains and electron-rich esters, where as tertiary carbons in the Fischer-Tropsch paraffins appear to form stable hydroperoxides with degradation products in the biodiesel (Mushrush, Willauer et al 2009). If the biodiesel contains unreacted free-fatty acids, phase separation and precipitates are likely to form.…”

Section: Feasibility Of Using Plant Oils For Fuels In Comparison Withmentioning

confidence: 99%

See 1 more Smart Citation

Processing of Soybean Oil into Fuels

McFarlane¹

2011

Recent Trends for Enhancing the Diversity and Quality of Soybean Products

View full text Add to dashboard Cite

Section: Generation Of Fungible Fuels From Plant Oils and New Technolmentioning

confidence: 99%

Section: Feasibility Of Using Plant Oils For Fuels In Comparison Withmentioning

confidence: 99%

Processing of Soybean Oil into Fuels

McFarlane¹

2011

Recent Trends for Enhancing the Diversity and Quality of Soybean Products

View full text Add to dashboard Cite

“…Because of the storage stability issues noted in the literature [7], refinery designs excluded blending of bio-derived material as fatty acid methyl esters (FAME). It is nevertheless discussed as an avenue for diesel fuel improvement.…”

Section: Diesel Fuel Specificationsmentioning

confidence: 99%

“…The addition of biofuel in the form of FAME has some benefit, although it would be necessary to address the storage stability issues reported in the literature [7]. The FAME that are derived from different oils all have high densities and adequate cetane numbers (Table 27.2) [30].…”

Section: Co-refiningmentioning

confidence: 99%

Diesel Fuel Refining

Klerk

2011

Fischer‐Tropsch Refining

View full text Add to dashboard Cite

Divergent opinions have been voiced about the quality and the desirability of the diesel fuel produced from Fischer-Tropsch distillates. The diesel fuel produced by the original German cobalt-based low-temperature Fischer-Tropsch (LTFT) processes was considered an inferior fuel. The Fischer-Tropsch-derived diesel fuel did not meet the German diesel fuel specifications of that time, resulting in a higher fuel consumption, and had to be blended with crude-oil-or coal-liquid-derived distillates to make it acceptable as diesel fuel (Section 6.3.3) [1, 2]. Conversely, from a mechanical engineering perspective, an alkane-rich distillate makes an excellent fuel for compression-ignition engines [3]. Numerous studies appeared in the literature dealing with the lower exhaust emission profile from LTFT distillates, but not all studies were equally favorable. The combustion chemistry in a compression-ignition engine is complex, and emission properties vary with load and timing [4]. The adage is true: ''The same elephant viewed from different angles looks differently.''The diesel fuel prepared from high-temperature Fischer-Tropsch (HTFT) distillate resembles that prepared from crude-oil-derived distillate.The refinery designs for producing motor-gasoline (Chapter 25) and jet fuel (Chapter 26) from Fischer-Tropsch syncrude produced little or no diesel fuel. This may seem at variance with the focus on distillate production seen in recent Fischer-Tropsch-based gas-to-liquids facilities (Chapters 11 and 12). The distillate obtained from LTFT synthesis has a very high cetane number. Yet, there is a difference between distillate, which meets the boiling point criteria for compression-ignition fuel, and on-specification diesel fuel that has to meet all the fuel specifications associated with fuel for compression-ignition engines.In this chapter, we explore diesel fuel refining. As in the two previous chapters, the objective is the production of on-specification transportation fuel from syncrude by appropriate refinery design. Like the other transportation fuels, the carbon number distribution of the syncrude must be shifted to the distillate range and the quality of the distillate must be improved to meet fuel specifications.Fischer-Tropsch Refining, First Edition. Arno de Klerk.

show abstract

“…However, it has been reported that blends of LTFT distillate, FAME, and petroleum have storage stability issues [45]. Much work has been done on esterification of plant and animal fats and oils as blending components in diesel.…”

Section: Future Diesel Fuel Specification Changesmentioning

confidence: 99%

Diesel Fuel

Klerk

2011

Fischer‐Tropsch Refining

View full text Add to dashboard Cite

Diesel fuel refers to the fuel that is used in compression-ignition engines (diesel engines). It is generally material boiling in the C 11 -C 22 hydrocarbon range. The requirements for diesel fuel are often diametrically opposed to that of motor-gasoline (Chapter 13). In motor-gasoline, it is important to suppress autoignition of the fuel to allow spark ignition to be correctly timed for good engine performance. In diesel fuel, it is important that the fuel autoignites and that the delay between fuel injection and the start of combustion is short.Compression-ignition engines operate at high compression ratios, typically around 15-17 : 1. This improves the thermodynamic efficiency of the engine, and on average compression-ignition engines are more efficient than spark-ignition engines. The engine itself is heavier, and traditionally it has been applied mainly for heavier vehicles. This situation has changed and, despite the higher cost of compression-ignition engines as compared to spark-ignition engines, there has been a marked shift in preference for diesel-powered passenger vehicles in Europe. This change is partly due to an increase in environmental awareness. Better engine efficiency leads to lower fuel consumption and can be translated into less CO 2 emitted per distance traveled. The move to vehicles with lower rated emissions (in grams of CO 2 per kilometer) is supported by the policies of the European Union.This shift in transportation fuel preference for the passenger vehicle market had a marked impact on refineries. The hydrogen in a typical conventional crude oil refinery is obtained from catalytic naphtha reforming. As the demand for motor-gasoline decreases, the need for reformate also decreases, which in turn reduces hydrogen production. Yet, refining crude oil to diesel fuel requires more hydrogen than refining crude oil to motor-gasoline. In each refinery there is a minimum motor-gasoline to diesel fuel ratio beyond which refining becomes inefficient and costly. The shift toward diesel fuel has created an imbalance in refinery production and in practice this imbalance in Europe is corrected by exporting motor-gasoline and importing diesel fuel. In the long run, it will be interesting to see how this might affect diesel fuel specifications, which over time have made diesel fuel production more difficult.Diesel fuel, like motor-gasoline, is a major consumer product and exerts a tremendous influence on the economy and the environment. Diesel fuel specifications are consequently subject to technical, environmental, and political pressures (Section 13.1).Fischer-Tropsch Refining, First Edition. Arno de Klerk.

show abstract

Incompatibility of Fischer−Tropsch Diesel with Petroleum and Soybean Biodiesel Blends

Cited by 10 publications

References 7 publications

Processing of Soybean Oil into Fuels

Processing of Soybean Oil into Fuels

Diesel Fuel Refining

Diesel Fuel

Contact Info

Product

Resources

About