Investigation of Soot Formation During Partial Oxidation of Diesel Fuel

2007 ◽  
Vol 30 (6) ◽  
pp. 782-789 ◽  
Author(s):  
K. Roth ◽  
S. Wirtz ◽  
V. Scherer ◽  
W. Nastoll
Keyword(s):  
Partial Oxidation ◽  
Diesel Fuel ◽  
Soot Formation

Effects of Fuel Quantity on Soot Formation Process for Biomass-Based Renewable Diesel Fuel Combustion

2016 ◽  
Author(s):  
Wei Jing ◽  
Zengyang Wu ◽  
William L. Roberts ◽  
Tiegang Fang
Keyword(s):  
Diesel Fuel ◽  
Formation Process ◽  
Fuel Injection ◽  
Soot Formation ◽  
Injection Pressure ◽  
Soot Temperature ◽  
Renewable Diesel ◽  
Constant Volume Combustion Chamber ◽  
Kl Factor ◽  
Soot Measurement

Soot formation process was investigated for biomass-based renewable diesel fuel, such as biomass to liquid (BTL), and conventional diesel combustion under varied fuel quantities injected into a constant volume combustion chamber. Soot measurement was implemented by two-color pyrometry under quiescent type diesel engine conditions (1000 K and 21% O2 concentration). Different fuel quantities, which correspond to different injection widths from 0.5 ms to 2 ms under constant injection pressure (1000 bar), were used to simulate different loads in engines. For a given fuel, soot temperature and KL factor show a different trend at initial stage for different fuel quantities, where a higher soot temperature can be found in a small fuel quantity case but a higher KL factor is observed in a large fuel quantity case generally. Another difference occurs at the end of combustion due to the termination of fuel injection. Additionally, BTL flame has a lower soot temperature, especially under a larger fuel quantity (2 ms injection width). Meanwhile, average soot level is lower for BTL flame, especially under a lower fuel quantity (0.5 ms injection width). BTL shows an overall low sooting behavior with low soot temperature compared to diesel, however, trade-off between soot level and soot temperature needs to be carefully selected when different loads are used.

Wet Partial Oxidation of JP8 in a Well-Insulated Reactor

2016 ◽  
Author(s):  
Richard Scenna ◽  
Ashwani K. Gupta
Keyword(s):  
Carbon Monoxide ◽  
Power Systems ◽  
Partial Oxidation ◽  
Soot Formation ◽  
Catalytic Reforming ◽  
High Sulfur Content ◽  
Reaction Regime ◽  
Reduced Costs ◽  
Direct Use ◽  
Reforming Reactions

This work investigates wet and dry non-catalytic partial oxidation of JP8 under distributed reaction regime condition. Previous works have demonstrated the potential of the distributed reaction regime to increase hydrogen and carbon monoxide production over conventional non-catalytic reforming and suppress soot formation inside the reactor. Jet propellant 8 (JP8) has a high sulfur content (up to 3000ppm) and a tendency to form coke, making it an ideal candidate for this non-catalytic approach. Experimental results are reported with the reactor operated at fixed oxygen to carbon ratio of 1.08 and steam to carbon ratios varied from 0.0 to 0.23. Numerical simulations were used to determine flame regime and extent of distribution. Steam provided favorable effects even with trace amounts (S/C=0.01), but more pronounced effects were observed at steam to carbon ratio of 0.17. Syngas composed of 22.5–24.6% hydrogen and 20.1–23.3% carbon monoxide was evolved. Of the hydrocarbons detected, only methane was seen in finite amounts (0.17–0.29%). The increase in performance in terms of reforming efficiency and conversion exceeded what can be ascribed to steam reforming reactions alone. Additional enhancement is attributed to distributed reaction in the reactor. Reforming efficiency of approximately 68–80% is comparable to that from catalytic reforming. Low steam to carbon ratio offers higher sustainability in mobile power systems at reduced costs from direct use of water recovered from fuel cells.

Fast Burning and Reduced Soot Formation via Ultra-High Pressure Diesel Fuel Injection

1991 ◽  
Author(s):  
Haruyuki Yokota ◽  
Takeyuki Kamimoto ◽  
Hidenori Kosaka ◽  
Kinji Tsujimura
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Soot Formation ◽  
Ultra High Pressure ◽  
Diesel Fuel Injection

Reducing the deactivation of Ni-metal during the catalytic partial oxidation of a surrogate diesel fuel mixture

2010 ◽  
Vol 154 (3-4) ◽  
pp. 210-216 ◽  
Author(s):  
Daniel J. Haynes ◽  
Andrew Campos ◽  
Mark W. Smith ◽  
David A. Berry ◽  
Dushyant Shekhawat ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Diesel Fuel ◽  
Fuel Mixture ◽  
Catalytic Partial Oxidation

Soot Formation Reaction Effect in Modeling Thermal Partial Oxidation of Jet-A

2014 ◽  
Author(s):  
Richard Scenna ◽  
Ashwani K. Gupta
Keyword(s):  
Experimental Data ◽  
Carbon Monoxide ◽  
Partial Oxidation ◽  
Kinetic Models ◽  
Soot Formation ◽  
Radical Formation ◽  
Fuel Reforming ◽  
Chemical Modeling ◽  
Formation Reaction ◽  
One Dimensional

The results obtained from the modeling of thermal partial oxidation of kerosene based Jet-A fuel are presented using one dimensional chemical modeling. Two detailed kinetic models for alkenes chemistry ranging between C8 to C16 were evaluated and compared against experimental data of thermal partial oxidation of Jet-A fuel. The key difference between these two kinetic models was the inclusion of model for soot formation reactions. Chemical modeling was performed using dodecane to represent Jet-A fuel. The results showed that the model with soot reactions was significantly more accurate in predicting reformate products from Jet-A. In particular, the formation of carbon monoxide, methane and acetylene closely followed the experimental data with the model that included soot formation reactions. The results revealed that the soot formation reactions promoted the smaller hydrocarbons to decompose via the alternate kinetic pathways and from additional radical formation. The results also reveal that the inclusions of soot formation reactions are critical in the modeling of thermal partial oxidation of fuels for fuel reforming.

Assessment of Possibilities for Operation of Ni-Catalyst Partial Oxidation Reformers in SOFC Systems after Soot Formation

2015 ◽  
Vol 68 (1) ◽  
pp. 327-332 ◽  
Author(s):  
A. P. Baskakov ◽  
N. Plotnikov ◽  
W. Wang ◽  
J. Peng ◽  
Y. Volkova ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Soot Formation ◽  
Ni Catalyst
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