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

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

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.

Partial oxidation of CH to synthesis gas using Ni-catalyst/Au|YSZ|Ag electrochemical membrane reactor

2005 ◽  
Vol 55 (2) ◽  
pp. 93-103 ◽  
Author(s):  
K TAKEHIRA ◽  
J SHIMOMURA ◽  
S HAMAKAWA ◽  
T SHISHIDO ◽  
T KAWABATA ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Synthesis Gas ◽  
Membrane Reactor ◽  
Ni Catalyst ◽  
Electrochemical Membrane Reactor

Production of Syngas via Partial Oxidation and CO2Reforming of Coke Oven Gas over a Ni Catalyst

2008 ◽  
Vol 22 (3) ◽  
pp. 1444-1448 ◽  
Author(s):  
Jianzhong Guo ◽  
Zhaoyin Hou ◽  
Jing Gao ◽  
Xiaoming Zheng
Keyword(s):  
Partial Oxidation ◽  
Coke Oven ◽  
Ni Catalyst ◽  
Coke Oven Gas

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.

The Reaction Scheme of Partial Oxidation of Methane to Synthesis Gas over Metallic Ni Catalyst

2012 ◽  
Vol 560-561 ◽  
pp. 309-320
Author(s):  
Xue Bin Hong ◽  
Ya Quan Wang ◽  
Cong Zhang
Keyword(s):  
Partial Oxidation ◽  
Synthesis Gas ◽  
Reaction Scheme ◽  
Partial Oxidation Of Methane ◽  
Ni Catalyst ◽  
Kinetic Regime ◽  
Oxidation Of Methane ◽  
Operational Variables ◽  
Mass And Heat Transfer ◽  
Significant Mass

A metallic Ni catalyst was prepared with nickel sponge, followed by acid treatment. The reaction scheme of partial oxidation of methane to synthesis gas over the metallic Ni catalyst had been suggested and researched. For defining the logical kinetic regime, the effects of operational variables on mass and heat transport resistances were investigated. In the absence of significant mass and heat transfer resistances, high selectivities to syngas were obtained on the metallic Ni catalyst even in the low methane conversion range. With the increase of CH4/O2 ratios, the selectivities to H2 and CO on the metallic Ni catalyst also increased.

Soot Formation in the Methane Partial Oxidation Process under Conditions of Partial Saturation with Water Vapor

2018 ◽  
Vol 58 (5) ◽  
pp. 427-433 ◽  
Author(s):  
D. S. Lugvishchuk ◽  
P. I. Kulchakovsky ◽  
E. B. Mitberg ◽  
V. Z. Mordkovich
Keyword(s):  
Water Vapor ◽  
Partial Oxidation ◽  
Oxidation Process ◽  
Soot Formation ◽  
Methane Partial Oxidation ◽  
Partial Saturation
Sign in / Sign up

Export Citation Format

Share Document