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Catalytic reactor for hydrogen generation systems

A catalytic reactor and generation system technology, applied in chemical/physical/physical chemical fixed reactors, chemical/physical/physical chemical nozzle reactors, hydrogen production, etc., can solve reverse mixing and pipeline leakage, low reaction Issues such as reactor yield, low fuel conversion, etc.

Inactive Publication Date: 2007-08-29
MILLENNIUM CELL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The loose fit or baffled catalyst beds of those systems lead to considerable backmixing and piping leaks, which produce low fuel conversion and low reactor throughput

Method used

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  • Catalytic reactor for hydrogen generation systems
  • Catalytic reactor for hydrogen generation systems
  • Catalytic reactor for hydrogen generation systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The reactor performance test used a tubular reactor with a 1.0" outside diameter ("o.d.") and a length of 7" (60 mL volume). The supported catalyst system was prepared as described in US Patent No. 6,534,033. Two catalyst systems were tested: ruthenium-cobalt / nickel metal fibers (RuCo / Ni) with a nominal loading of 1.2 wt. % Ru and 3 wt. % Co, and a nominal loading of 3 wt. Cobalt-zinc / nickel metal fibers (CoZn / Ni) of Co and 3% by weight Zn.

[0049] Reactor A was filled with 55g RuCo / Ni catalyst; Reactor B was filled with 55g CoZn / Ni catalyst. Reactor C was packed with two catalyst beds according to Figure 5, but without heat exchange elements; 25 g of RuCo / Ni catalyst was placed in the first part of reactor 116 (catalyst bed 118a), while 25 g of CoZn / Ni catalyst was placed in reactor 116 The second part of (catalyst bed 118b). Reactor level operation, uninsulated and without heat exchangers and using 20% ​​by weight NaBH 4 Membrane elements integrated with 3% (wt) ...

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Abstract

The operating characteristics of catalytic reactors used in systems which generate hydrogen from the contact of a fuel with a catalyst are enhanced by such reactors incorporating one or more of group of elements consisting of (a) a heat exchanging element that preheats the fuel solution prior to its contact with the catalyst, (b) one or more liquid diffusing elements which distributes the flow of fuel over the catalyst so as to increase the generation hydrogen from such contact, (c) multiple catalysts having different hydrogen generating characteristics and d) a membrane capable of operating at pressures equal to or greater than 50 psig which surrounds catalytic material in the reactor and separates the generated hydrogen from the fuel.

Description

field of invention [0001] The present invention relates to the design of a catalytic reactor for use in a system for the production of hydrogen from a fuel solution, the production of which is facilitated by contact of the fuel solution with a catalytic substance in the reactor. Background of the invention [0002] Hydrogen is the fuel of choice for fuel cells, however, its widespread use is complicated by difficulties in storing the gas. Many hydrogen carriers, including hydrocarbons, metal hydrides, and chemical hydrides, have been considered as hydrogen storage and supply systems. In each case, special systems have to be developed for the release of hydrogen from its support by reformation as in the case of hydrocarbons, desorption from metal hydrides or catalytic hydrolysis of chemical hydrides. [0003] One of the more promising hydrogen storage and generation systems employs borohydride as the medium for hydrogen storage. Sodium borohydride (NaBH 4 ) is of particula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C01B3/08C01B3/04C01B3/06B01J8/02B01J8/04B01J19/24B01J19/26
CPCY02E60/362B01J2208/00504B01J2208/0084Y02E60/364B01J2208/00203B01J8/0285C01B3/065B01J19/26B01J2208/00132B01J8/0453B01J2208/00176B01J8/0278B01J2208/00141B01J19/2475Y02E60/36
Inventor 张青林G·M·史密斯洪宗萱
Owner MILLENNIUM CELL