Some Comparative Chemical, Physical and Compatibility Properties of Sasol Slurry Phase Distillate Diesel Fuel

Morgan, Paul; Viljoen, Carl; Roets, Piet; Schaberg, Paul; Myburgh, I. S.; Botha, Jacobus J.; Dancuart, Luis P.

doi:10.4271/982488

Cited by 22 publications

(7 citation statements)

References 2 publications

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“…The butene-derived distillate is acceptable, having properties close to that expected from high-temperature oligomerization of Fischer-Tropsch derived feed 22 but worse than that of hydrogenated low-temperature Fischer-Tropsch primary product. 23 The C 5 /C 6 -material yielded a much better distillate and would be the preferred feed if distillate production is targeted. C 7 / C 14 -feed was more suited to oil production.…”

Section: Discussionmentioning

confidence: 99%

Thermal Upgrading of Fischer−Tropsch Olefins

Klerk

2005

Energy Fuels

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Thermal oligomerization is a radical based conversion process. It offers specific advantages to linear olefinic feed with a high α-olefin content, like primary Fischer−Tropsch products. Thermal oligomerization of C4−C14 Fischer−Tropsch feed materials has been investigated over the temperature range 320−400 °C. Motor gasoline, distillate, and lubricating oil quality was determined by the feed used, and operating conditions had only a minor influence. Good quality distillate (cetane ≥ 54) and lubricating oil (viscosity index of 100) could be produced, while the naphtha was suitable for chemical applications, like plasticizer alcohols production. Oxygenates present in the Fischer−Tropsch product had little influence on the process. Carbon formation was about 400 μg·g-1. Prospects for commercial application was discussed and is limited to an olefin-rich refining environment, where feed-specific advantages can be used to offset the disadvantage of a slow reaction rate (0.1 mol·s-1·m-3).

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Section: Discussionmentioning

confidence: 99%

Thermal Upgrading of Fischer−Tropsch Olefins

Klerk

2005

Energy Fuels

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“…7 Previous GTL fuel studies have not noted adverse effects on engine operation as a result of the lower fuel density. 9,10,11 The cetane number of GTL fuels is most often reported as >74, much higher than conventional diesel fuels. 12 GTL fuel is composed almost wholly of paraffins.…”

Section: Waxesmentioning

confidence: 99%

Fuel Property, Emission Test, and Operability Results from a Fleet of Class 6 Vehicles Operating on Gas-To-Liquid Fuel and Catalyzed Diesel Particle Filters

Alleman¹,

Eudy²,

Miyasato³

et al. 2004

SAE Technical Paper Series

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A fleet of six 2001 International Class 6 trucks operating in southern California was selected for an operability and emissions study using gas-to-liquid (GTL) fuel and catalyzed diesel particle filters (CDPF). Three vehicles were fueled with CARB specification diesel fuel and no emission control devices (current technology), and three vehicles were fueled with GTL fuel and retrofit with Johnson Matthey's CCRT™ diesel particulate filter. No engine modifications were made.Bench scale fuel-engine compatibility testing showed the GTL fuel had cold flow properties suitable for year-round use in southern California and was additized to meet current lubricity standards. Bench scale elastomer compatibility testing returned results similar to those of CARB specification diesel fuel. The GTL fuel met or exceeded ASTM D975 fuel properties.Researchers used a chassis dynamometer to test emissions over the City Suburban Heavy Vehicle Route (CSHVR) and New York City Bus (NYCB) cycles. The GTL-fueled vehicles were tested with and without the CDPFs to isolate fuel and aftertreatment effects.All emission changes are compared to the CARB specification diesel baseline. Over the CSHVR cycle, GTL fuel (no filter) reduced all regulated emissions, with oxides of nitrogen (NO x ) reductions of 8% and particulate matter (PM) reductions of 33%. Over the NYCB cycle, GTL fuel (no filter) reduced NO x and PM by 16% and 23%, respectively. Combining GTL and CDPF further reduced all regulated emissions, with NO x and PM reductions of 14% and 99%, respectively, on the CSHVR cycle. Vehicles tested over the NYCB cycle on GTL fuel and CDPF produced NO x and PM reductions of 20% and 97%, respectively.

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“…FT fuel is typically characterized for the super low sulfur content, high cetane number and absence of aromatic hydrocarbons [1][2][3]. The higher CN decreases the ignition delay, leading to lower NOx emission [4].…”

Section: Introductionmentioning

confidence: 99%

Spray characteristics of diesel fuel, Fishch-Tropsch diesel fuel and their blend

Gong

Chen

Liu

2011

2011 International Conference on Electrical and Control Engineering

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Spray characteristics of pure diesel fuel, F-T50 fuel (blend of diesel and Fischer-Tropsch diesel with a volume ratio of 1:1) and Fischer-Tropsch diesel were investigated in a constant volume bomb (CVB). Results show that for all the fuels tested, spray angles are initially wide and then decrease rapidly with time. The spray angle of the pure diesel fuel approaches a constant value with the spray injection development, whereas those of the F-T50 fuel and Fischer-Tropsch diesel slightly increase in the later stage of spray injection process. At low ambient pressures and narrow injection pulse width, higher fraction of Fischer-Tropsch diesel in the blend results in increased spray angles and reduced spray tip penetration. However, when the ambient pressure or the injection pulse width is raised to a certain degree, no increase of spray angle is observed with the increase of Fischer-Tropsch diesel fraction in the blend.

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Some Comparative Chemical, Physical and Compatibility Properties of Sasol Slurry Phase Distillate Diesel Fuel

Cited by 22 publications

References 2 publications

Thermal Upgrading of Fischer−Tropsch Olefins

Thermal Upgrading of Fischer−Tropsch Olefins

Fuel Property, Emission Test, and Operability Results from a Fleet of Class 6 Vehicles Operating on Gas-To-Liquid Fuel and Catalyzed Diesel Particle Filters

Spray characteristics of diesel fuel, Fishch-Tropsch diesel fuel and their blend

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