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Reforming diesel

A direct comparison of Al203-supported Pt, Pd, and Ru suggests that Ru is the most active metal for diesel reforming, at least on this support. Berry et al studied diesel reforming at a temperature range of 750 to 850°C and GHSVs of 25,000 to 200,000 h Activity increased in the order Pd < Pt < Ru. Complete conversion of diesel was obtained at 850°C and space velocity of 50,000 h from the ATR of diesel over a y-alumina supported Ru catalyst. [Pg.236]

Cheekatamarla, P.K. and Thomson, W.J. Catalytic activity of molybdenum carbide for hydrogen generation via diesel reforming. Journal of Power Sources, 2006, 158 (1), 477. [Pg.119]

The present chapter will review the present state of the art and challenges in the ultradeep desulfurization of natural gas, gasoline, jet fuel, diesel, reformate, and syngas from coal gasifier by HDS, selective adsorption, solvent absorption, and ODS, respectively. [Pg.225]

Develop a predictive CFD model (Fluent) for diesel reforming Conduct steady-state simulations and validate model with ATR experimental data Conduct transient analysis... [Pg.337]

Kinetic modeling of diesel autothermal reforming is extremely complicated. Diesel fuel consists of a complex variable mixture of hundreds of hydrocarbon compounds containing paraffins, isoparaffins, naphthenes, aromatics, and olefins. To simplify the model, a steady-state power law rate expression for the diesel reforming over each type of catalyst used in this study was developed. A linearized least-squares method of data analysis was used to determine the power law parameters from a series of diesel ATR experiments. The power law rate model for diesel autothermal reaction may be written as ... [Pg.340]

Table 3. Kinetic Parameter for Diesel Reforming from Three Different Catalysts... Table 3. Kinetic Parameter for Diesel Reforming from Three Different Catalysts...
Reddy and Wilhite [59] investigated application of membrane reactors in diesel reformate mixture purification isothermal two-dimensional model. The typical reformate mixture contains 9% CO, 3% CO2, 28% H2 and 15% H2O. Simulations indicate that apparent CO H2 selectivities of 90 1 to >200 1 at H2 recoveries of 20% to upwards of 40% may be achieved through appropriate design of the catalytic membrane and selection of operating cmiditions. Comparison of adiabatic and isothermal simulations indicates that accumulation of reaction heat reduces apparent perm-selectivities however, this may be mitigated by external imposition of a cotmtering thermal gradient... [Pg.165]

K. B. V. Reddy, B. A. Wilhite, Theoretical investigatirm of a water-gas-shift catalytic membrane for diesel reformate purification, AIChE J. 59 (2013) 4334—4344. [Pg.168]

Liu D-J, Krumpelt M, Chien H-T, Sheen S-H (2006) Critical issues in catalytic diesel reforming for solid oxide fuel cells. J Mater Eng Perform 15 442-444... [Pg.140]

Liu D-J, Krumpelt M (2005) Activity and structure of perovskites as diesel-reforming catalysts for solid oxide fuel cell. Int J Appl Ceram Technol 2 301-307... [Pg.140]

For very big ships with a high energy need it seems that the diesel is still the most efficient powertrain. Alone the hydrogen feed would not be given in such an application—not with tank storage, nor with diesel reforming. [Pg.101]

Fast preheating is possible in case of ceramic monoliths are applied for autothermal reforming. Lindstrom et al. [43] reported 6 min start-up time demand of their autothermal diesel reformer, which was preheated by a homogeneous diesel burner through a heat exchanger via air (Figure 14.9). [Pg.341]

Greaser et al. [76] modeled autothermal diesel reforming in a ceramic monolithic reactor and verified the modeling results with experimental data as shown in Figure 14.10. The model revealed that axial heat conduction plays an important role even in ceramic monoliths. The catalyst temperature was found to be 25°C hotter than the gas phase at the reactor inlet according to the calculations. At the positions of highest reaction rates, the catalyst utilization was as low as 20%. Transport limitations in the washcoat were assumed to be the root cause. The... [Pg.341]

Figure 14.10 Species concentration versus O/C ratio (here expressed as O2/C) for an autothermal diesel reformer at S/C = 2.3. Symbols represent experimental data, the lines represent simulation results [76]. Figure 14.10 Species concentration versus O/C ratio (here expressed as O2/C) for an autothermal diesel reformer at S/C = 2.3. Symbols represent experimental data, the lines represent simulation results [76].
Hartmann, L, Lucka, K, Kohne, H. Mixture preparation by cool flames for diesel-reforming technologies. J. Power Sources 2003 118 286-297. [Pg.360]

A number of papers have reported on reactor performance during reactor development for diesel reforming with a conversion of 90-99%. These results were caused by an improper functioning of reactors at a lower development level... [Pg.626]

Ahmed K, Foger K (2003) Thermodynamic analysis of diesel reforming options for SOFC systems. Elec SocS 2003 1240... [Pg.2008]

Figure 3.13 Efficiency of diesel reforming depending on the air ratio, X., and the S/C ratio (SCR) at 800°C, as determined by Hartmann et al. [69],... Figure 3.13 Efficiency of diesel reforming depending on the air ratio, X., and the S/C ratio (SCR) at 800°C, as determined by Hartmann et al. [69],...
The OWI cool flame technology has been adopted for diesel reforming as the fuel supply of a solid oxide fuel cell by Nordic Power systems. [Pg.42]

Aicher et al. [72] measured the temperature profile in their autothermal diesel reformer reactor (see Figure 4.4). Temperatures up to 900 °C were detected upstream of the catalyst honeycomb, while the reformate temperature never exceeded 700 °C at the reactor exit... [Pg.70]

To study the effect of increasing sulfur content in the reformate, sulfur dioxide was added in small amounts of between 100 and 400 ppm to the feed mixture of the autothermal diesel reformer. Sulfur dioxide was chosen because under the conditions of autothermal reforming most sulfur components are converted into sulfur dioxide (see Section 3.5). Activity measured as hydrogen yield showed a drastic decrease from 75 to 40%, when 200 ppm sulfur dioxide were added to the feed. However, no further detrimental effects were recorded when more sulfur dioxide was added. A similar behaviour was observed when hydrogen sulfide was added. This is because the plateau had already been reached at 75 ppm hydrogen sulfide addition. [Pg.102]

Figure 7.6 Dry gas hydrogen and carbon oxide concentrations as determined experimentally for different O/C ratios (here shown as the O2/C ratio) for an autothermal diesel reformer thermodynamic equilibrium compositions are provided as lines solid line, hydrogen dotted line, carbon dioxide dotted-dashed line, carbon monoxide [491],... Figure 7.6 Dry gas hydrogen and carbon oxide concentrations as determined experimentally for different O/C ratios (here shown as the O2/C ratio) for an autothermal diesel reformer thermodynamic equilibrium compositions are provided as lines solid line, hydrogen dotted line, carbon dioxide dotted-dashed line, carbon monoxide [491],...
Figure9.54 Reactor temperatures and dry reformate composition of the diesel reformer developed by Rosa et al. The gas analysis shows the gas composition of the fuel processor product [251]. Figure9.54 Reactor temperatures and dry reformate composition of the diesel reformer developed by Rosa et al. The gas analysis shows the gas composition of the fuel processor product [251].
Borup, R.L., Inbody M.A., Tafoya, J.I., Guidry, D.R. and Jerry, W. (2004) SOEC anode reqfde effect on diesel reforming, in Proceedings of the AIChE Spring Meeting, New Orieans. [Pg.375]

Fierro, J.L.G. and Bordons, C. (2006) Design of a diesel reformer coupled to a PEMFC. Catal. Today, 116, 324-333. [Pg.386]


See other pages where Reforming diesel is mentioned: [Pg.246]    [Pg.53]    [Pg.53]    [Pg.386]    [Pg.340]    [Pg.355]    [Pg.200]    [Pg.206]    [Pg.930]    [Pg.95]    [Pg.238]    [Pg.347]    [Pg.386]    [Pg.43]    [Pg.444]    [Pg.240]   
See also in sourсe #XX -- [ Pg.198 ]




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