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Passive Verduennungseinheit zur Verduennung von Brennstoffen

Dilution unit useful in reformer and fuel cell for passive dilution of fuels e.g. natural gas, benzene, ethanol and methanol with water, comprises flow channel for fuel formed as phase such as membranes and/or fabrics having catalyst
 
: Oszcipok, M.

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Frontpage ()

DE 102007050616 A: 20071023
DE 102007050616 A: 20071023
C10G0027
H01M0008
C12G0003
German
Patent
Fraunhofer ISE ()

Abstract
(B3) Vorliegende Erfindung betrifft eine passive Verduennungseinheit, die einen Durchflusskanal fuer Brennstoff aufweist, wobei der Durchflusskanal zumindest ein Fenster hat, ein dem eine mit einem Katalysator versehene Membran angebracht ist. Durch diffusive Prozesse kann z.B. Luftsauerstoff durch die Membran zum Kraftstoffstrom vordringen und durch den Katalysator vermittelte oxidative Prozesse einer Reaktion bedingen, bei der der Brennstoff zu Wasser oxidiert wird. Das dabei entstehende Wasser wird direkt im Kraftstoffstrom einbehalten und verduennt dabei direkt den Kraftstoff.

 

DE 102007050616 B3 UPAB: 20090430 NOVELTY - The dilution unit useful in a reformer and a fuel cell for the passive dilution of fuels (1) e.g. natural gas, benzene, ethanol and methanol with water, comprises a flow channel (5) for fuel formed as a phase (3) such as membranes and/or fabrics having a catalyst (4). The phase is coated and/or impregnated with the catalyst, is diffusion-permeable for gaseous oxidizing agents (6) e.g. oxygen or air and/or gaseous reaction products (7) e.g. carbon dioxide and is impermeable for the fuel and/or the fuel mixture. DETAILED DESCRIPTION - The dilution unit useful in a reformer and a fuel cell for the passive dilution of fuels (1) e.g. natural gas, benzene, ethanol and methanol with water, comprises a flow channel (5) for fuel formed as a phase (3) such as membranes and/or fabrics having a catalyst (4). The phase is coated and/or impregnated with the catalyst, is diffusion-permeable for gaseous oxidizing agents (6) e.g. oxygen or air and/or gaseous reaction products (7) e.g. carbon dioxide and is impermeable for the fuel and/or the fuel mixture. The membranes and/or the fabrics are fuel resistant plastics, ceramic materials, coated fabric, semi-permeable membranes, porous membranes and/or ion exchanger membranes. An INDEPENDENT CLAIM is included for a method for the passive dilution of a fuel or a fuel mixture with water. USE - Dilution unit useful in a reformer and a fuel cell for the dilution of fuels or fuel mixtures with water, adjustment of a defined water content in fuels or fuel mixtures, dilution of alcoholic solutions in the food industry, conversion and/or regeneration of the fuels, where the fuel consists of hydrocarbons such as natural gas, benzene, diesel, kerosene, methane, ethane, propane, butane, hydrogen, biogas, bio-diesel and vegetable oils, and alcohols such as methanol, ethanol, denatured alcohols and/or drinking alcohol (all claimed). ADVANTAGE - The dilution unit has simple structure and is capable of operating in a maintenance-free manner without any mechanical component or additional water tanks.

: http://publica.fraunhofer.de/documents/N-95828.html