Patent DE-102006041958-B3 (DE)
Title: Device for hydrogen production from sodium borohydride, comprises reaction chamber with reaction area, which supplies sodium borohydride in powder form, water supply mechanism, and transport device having transportation elements
Inventor: KAZ TILL
IPC: C01B3/06
Filed: 2006-08-30
Granted: 2008-01-31
Abstract: The device for hydrogen production from sodium borohydride, comprises a reaction chamber (12) with reaction area (14), which supplies sodium borohydride in powder form, a water supply mechanism, over which the water is supplyable to the reaction area, and a transport device through which sodium borohydride is supplyable to the reaction area. The transport device has transportation elements with catalyst surface and a screw conveyor. The reaction chamber has a coupling area (16) for sodium borohydride powder and uncoupling area (18) for used sodium borohydride. The device for hydrogen production from sodium borohydride, comprises a reaction chamber (12) with reaction area (14), which supplies sodium borohydride in powder form, a water supply mechanism, over which the water is supplyable to the reaction area, and a transport device through which sodium borohydride is supplyable to the reaction area. The transport device has transportation elements with catalyst surface and a screw conveyor. The reaction chamber has a coupling area (16) for sodium borohydride powder and uncoupling area (18) for used sodium borohydride. The transport device is formed, so that non-liquid fluid material is transportable, and sodium borohydride is continuously transportable to the reaction area. The transport device transports material from coupling area to the uncoupling area. The uncoupling area is connected with a reception chamber for used sodium borohydride and for sodium borohydride-powder. The reception chamber has a variable volume and is limited by a limiting wall (20), which is movable. The movable limiting wall is spring-loaded. A driving device is intended for the supply of sodium borohydride-powder from the reception chamber to the reaction area. Multi limiting walls of the reaction area are formed that are partly permeable for hydrogen and partly permeable for porous. Multi limiting walls of the reaction area are formed, so that water is supplyable into the reaction chamber, and have a catalyst surface in a sub range. The catalyst surface is faced towards the reaction area. A water wicking is arranged at a front sub range of the reaction area, which is positioned at or in the proximity of coupling area for sodium borohydride-powder. The water wicking is connected effectively with an exhaust mechanism for reaction water of a fuel cell system. A supply direction for sodium boron hydride-powder in the reaction chamber and a transportation direction for material are parallel to each other by the reaction area, and are crosswise to each other. The reception chamber for sodium borohydride-powder, the reaction chamber and another reception chamber for used sodium borohydride are arranged consecutively. A storage tank for sodium borohydride-powder and a chamber for used sodium borohydride are arranged one upon the other. The supply direction for sodium borohydride-powder in the reaction area and an exhaust direction for used sodium borohydride from reaction area are parallel or coaxially to each other. An independent claim is included for a method for production of hydrogen production from sodium borohydride.