Reformer including extrusion guide walls perpendicular to the flow path

Abstract

For the production of the reformer (6) in the fuel cell system (1), the profile (31) is extruded with guide walls (17) for the steam during the conversion into syngas for the fuel cell (2) Zigzag formed path (15).

Description

technical field [0001] The present invention relates to a production method of a reformer in a fuel cell system. Background technique [0002] When liquid fuels are used for power generating fuel cells, the hydrogen for the fuel cells is generated by converting the liquid fuels into synthesis gas (also known as syngas) that contains large amounts of gaseous hydrogen. An example of a liquid fuel is a mixture of methanol and water, but other liquid fuels may also be used, in particular other alcohols, including ethanol. For conversion, the liquid fuel is evaporated in a evaporator and catalytically converted in a reformer to provide syngas for the fuel cell. In order to achieve the necessary conversion temperature of 250-300 degrees Celsius, the reformer must be heated, for example by exhaust gases from burners, whose gases typically have a temperature of 350-400 degrees Celsius. [0003] A general example of a reformer is disclosed in UK US7976787. For proper heat transfer...

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of being relatively slow, and is therefore not optimal for large-scale production

Furthermore, this means a great waste of material, as the material ground out of blocks (eg aluminum blocks) is useless and has to be discarded

Molding is better for mass production but not for closed volume closed structures as it limits the production method and requires additional assembly steps

In addition, molding requires different mold forms of different sizes, which increases production costs

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