Renault patent: generating hydrogen by high temperature steam conversion

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Renault patent: generating hydrogen by high temperature steam conversion

Keywords: Reforming, reforming, cracking, cracking, vapocraking, catalytic cracking, thermal cracking, catalyst, fuel cell, fuel cell, hydrogen, synthesis, oxygenation, autothermal, exothermic, endothermic.

Title or patents:
Method and hydrogen generating device by high temperature shift with steam

Patent number: FR2831532

inventor: Armines Association for research and development of methods and industrial processes. Renault.

Date filed: 26 October 2001

Our scientific opinion:

Patent aiming to protect a method of synthesizing a hydrogen-rich gas by thermal reforming conventional fuels (gasoline, diesel oil, LPG / CNG, even vegetable oils or alcohols).
The application is a recess board reformer for feeding a fuel cell powered vehicle.

The real peculiarity of this patent is firstly to make a thermal cracking and catalytic either with respect to patents already known systems and secondly to use conventional fuels (this in contrast to the reforming of methanol) and thirdly to conduct a steam reforming: reforming in the presence of water vapor.

These three points have strong similarities with the pantone process (in 100% pantone phase and not water doping): no catalyst, the presence of water vapor and use of conventional fuels. Temperatures similar operation.

Thus we read: "For hydrocarbons heavier than methane, the (reforming) temperatures are lower (below 850 ° C)"

Autothermal reforming is also mentioned: it is a thermal equilibrium between a partial oxidation reaction (exothermic) and reforming (endothermic) which can be particularly interesting in some cases.

Finally, note that it is a pity that the present patent as prior art (2 X, blatant anticipation, on all claims) that he will probably not be operated easily.

Download Renault patent FR2831532 on generating H2 from steam


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