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A Low Emission Diesel Fuel: Hydrocracking Production, Characterization and Engine Evaluations
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1993 by SAE International in United States
Annotation ability available
The new regulations for emissions in USA (California and other States), introduce a new quality requirement for diesel formulations. As an answer to these problems Intevep, S. A., has developed a hydrocracking processing technology, a very flexible process able to operate up to 100 % of cracked material and with a mixture of light to heavy gas oil in any proportion, and which operates at moderate pressure. The proper balance between hydrogenation and mildhydrocracking is obtained through controlling the temperature and by tayloring the catalyst composition. Production of diesel fuel with less than 10 % wt aromatics was targeted, in a scenario of minimum hydrogen availability. Very low sulfur levels are achieved and the aromatic fraction is composed mostly of mono-aromatic compounds. Tests were conducted using a commercial Isuzu diesel engine, installed on an engine test bench and operated on a 7-mode cycle. Data was taken on each mode and statistical procedures for averaging, weighting and analysis were applied to study engine operation.
Satisfactory combustion performance relative to high aromatic content fuels, was observed, based on a heat release analysis, comparing burning rates and fuel fractions burned on premix and diffusion modes. A reduced specific fuel consumption was determined to be due to high energy content. A screening version of the California Air Resources Board certification procedure for alternative diesel fuel formulations was carried out on a Detroit Diesel Series 60 engine, following successive hot start transient evaluations. Exhaust emissions of HC, CO, NOx, Particulates, SOF and Sulfates were determined. Results indicate the potential of this fuel formulation to reach the qualification of low emission diesel fuel. Chemical analysis and detailed fuel characterization are used to explain the low emission results and the effects of fuel composition on emissions. Comparisons with exhaust emission predictions for this particular engine indicate areas for further improvements.
CitationGonzález D., M., B., G., Galiasso, R., and Rodriguez, E., "A Low Emission Diesel Fuel: Hydrocracking Production, Characterization and Engine Evaluations," SAE Technical Paper 932731, 1993, https://doi.org/10.4271/932731.
Diesel Fuels for the Nineties: Composition and Additives to Meet Emissions and Performance Needs
Number: SP-0994; Published: 1993-10-01
Number: SP-0994; Published: 1993-10-01
- Zerpa C. Di Marco M. Gonzalez F. Galiasso. R. HHC™ Process for High Quality Diesel Production from Cracked feedstocks 5th UNITAR International Conference on Heavy Crude and Tar Sands August 4-9 Caracas, Venezuela 1991
- Galiasso R. Di Marco M. Salazar A. Production of High Quality Diesel through a Selective Hydrocracking Process 13th World Petroleum Congress Buenos Aires, Argentina 1991
- Rodríguez E. González J. C. Evaluación de Catalizadores de Hidrocraqueo de Gasóleos de Vacío Inf. Técn INT-01225,84 Intevep, S.A. Los Teques, Venezuela 1984
- Pacheco C. Hazos M. Aromatic and Saturate Analysis by Low Resolution Mass Spectrometry Division of Petroleum Chemistry, INC. American Chemical Society. Washington Meeting August 23-28, 1992
- Barry E. G. McCabe L. J. Gerke D. H. Perez J. M. Heavy-duty Diesel Engine/Fuels Combustion Performance and Emissions - A Cooperative Research Program SAE Paper 852078 1985
- Code of Federal Regulations, Title 40, Parts 81 to 99 Washington DC 1990
- Krieger R. B. Borman G.L. The Computation of Apparent Heat Release for Internal Combustion Engines ASME Paper 66-WA/DGP-4 1966
- California Air Resources Board (CARB) Amendments to Title 13, California Code of Regulations, Section 2282: Final Regulation Order December 26 1991
- Montalvo Daniel Chaffin Cynthia Emissions Testing of CARB Equivalent Fuel Candidates Final Report SwRI-4527-010 October 1992
- Ullman Terry Mason Robert L. Montalvo Daniel A. Effects of Fuel Aromatics, Cetane Number, and Cetane Improver on Emissions from a 1991 Prototype Heavy-Duty Diesel Engine
- Nikanjam Manuch Development of the First CARB Certified California Alternative Diesel Fuel SAE Paper 930728 1993