Apparatus for the electrical production of hydrogen
a technology of hydrogen electrical production and apparatus, which is applied in the direction of electrolysis components, hydrogen separation using solid contact, separation process, etc., can solve the problems of unfavorable water burden in hydrogen, binding, and insufficient mechanical water separators, etc., to achieve favorable operating conditions, improve efficiency, and operate substantially more effectively
Inactive Publication Date: 2013-02-07
H TEC SYST
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Benefits of technology
The present invention provides a solution for operating an electrolyzer at high temperature, which results in higher efficiency and avoids gas losses during pressure swing adsorption. The temperature is limited upwardly by the boiling point of water, but the quantity of water to be removed doubles with every 11° C. of increase in temperature. This is beneficial because the electrolyzer of the apparatus according to the present invention can operate more effectively without losing hydrogen. Additionally, the energy required for cooling is significantly lower compared to conventional methods.
Problems solved by technology
This water burden being entrained in the hydrogen is undesired in many industrial applications, and it is therefore to be removed.
Mechanical water separators are usually insufficient here, because they are unable to sufficiently free the hydrogen stream of water.
However, such binding takes place only as long as the molecular sieve beds are not saturated.
This method is comparatively complicated and impairs especially the efficiency of the apparatus, because the hydrogen used for the backwash usually escapes unused.
The method reaches its limits especially with increasing water load in the hydrogen stream, and these apparatuses, which are known from the state of the art, are therefore rather ineffective.
Method used
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[0022]Referring to the drawings in particular, the apparatus shown in the FIGURE is arranged in an essentially closed housing, not shown, but it does not necessarily have to be so designed, but, especially if it is integrated in an instillation, its components may be integrated in the instillation.
[0023]The apparatus has an electrolyzer 1 of the PEM type, which is usually designed as a stack, but it may be designed in any other suitable form as well. The electrolyzer has an inlet 2 for the introduction of water. A first outlet 3 of the electrolyzer 1 is provided for removing the hydrogen produced in electrolyzer 1, which typically contains water and water vapor. Furthermore, electrolyzer 1 has a second outlet 4, which is provided for removing the oxygen formed in electrolyzer 1.
[0024]In the embodiment shown, the apparatus has a reservoir 5 in the form of a water tank, which is connected to the inlet 2 of the electrolyzer via a pump 6 by means of a water line. The second outlet 4 ope...
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Abstract
An apparatus for the electrical production of hydrogen from water includes an electrolyzer (1) of the PEM type. The electrolyzer (1) has an inlet (2) for the introduction of water and a first outlet (3) for the hydrogen which is enriched with water and / or water vapor and is produced in the electrolyzer (1) and also a second outlet (4) for oxygen. A water separation device (7) which has at least a thermal separation stage (10) adjoins the electrolyzer (1).
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a United States National Phase application of International Application PCT / EP2011 / 001899 and claims the benefit of priority under 35 U.S.C. §119 of European Patent Application EP 10 004114.4-1227 filed Apr. 19, 2010, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention pertains to an apparatus for the electrical production of hydrogen from water.BACKGROUND OF THE INVENTION[0003]The use of electrolyzers for producing hydrogen from water by means of electric energy belongs to the state of the art. Such electrolyzers exist in various designs. The present invention pertains to an apparatus with an electrolyzer of the PEM type (Polymer Electrolyte membrane), i.e., an electrolyzer that operates with a proton-permeable polymer membrane. Such electrolyzers are typically built in so-called stacks in order to achieve the highest possible gas yield in the smallest po...
Claims
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IPC IPC(8): C25B9/08C25B9/19
CPCB01D53/265B01D2256/16C01B3/506C01B3/56C01B2203/04Y02E60/366C01B2203/0465C01B2203/145C01B2203/146C25B15/08C01B2203/043C25B1/04Y02E60/36
Inventor HOLLER, STEFANGADEKE, FREIMUTWURFEL, CLAUSMANTAL, NILSKUTER, UWE
Owner H TEC SYST