JP2021187684A - Method and device for producing hydrogen - Google Patents
Method and device for producing hydrogen Download PDFInfo
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- JP2021187684A JP2021187684A JP2020090601A JP2020090601A JP2021187684A JP 2021187684 A JP2021187684 A JP 2021187684A JP 2020090601 A JP2020090601 A JP 2020090601A JP 2020090601 A JP2020090601 A JP 2020090601A JP 2021187684 A JP2021187684 A JP 2021187684A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 40
- 239000001257 hydrogen Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910001868 water Inorganic materials 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 18
- 239000007864 aqueous solution Substances 0.000 claims abstract description 14
- 239000012634 fragment Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000000243 solution Substances 0.000 abstract 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 aluminate ions Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Fuel Cell (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
本発明は、アルミニウム又はアルミニウム合金を原材料に用いた水素の製造方法に関し、特に切粉等の細いアルミ原材料を用いた水素の製造方法及び製造装置に係る。 The present invention relates to a method for producing hydrogen using aluminum or an aluminum alloy as a raw material, and more particularly to a method for producing hydrogen using a fine aluminum raw material such as chips and an apparatus for producing hydrogen.
アルミニウムやアルミニウム合金（以下必要に応じてアルミニウム合金等と称する。）にアルカリ水溶液を反応させると、水素が発生する。
例えば特許文献１には、使用後に回収したアルミ缶を原材料にした水素製造方法が開示されている。
このように、使用済みのアルミを回収し、水素製造に用いることは、自然環境にも優しく、循環型社会の構築に有用である。
本発明者らは、アルミニウム合金等を原材料に用いた各種アルミ製品の製造過程において、機械加工等による多くの切粉が発生していることに着目し、これを用いて水素の製造ができないか検討した。
得られた水素を燃料電池等に利用するには、高純度の水素でなければならない。
しかし、アルミニウム合金等の切粉をアルカリ水溶液と反応させるだけでは、水素の純度が低く、燃料電池用の水素には使用できないことが判明した。
When an alkaline aqueous solution is reacted with aluminum or an aluminum alloy (hereinafter, referred to as an aluminum alloy or the like, if necessary), hydrogen is generated.
For example,
In this way, recovering used aluminum and using it for hydrogen production is friendly to the natural environment and is useful for building a sound material-cycle society.
The present inventors have focused on the fact that many chips are generated by machining, etc. in the manufacturing process of various aluminum products using aluminum alloys, etc. as raw materials, and can hydrogen be produced using these chips? investigated.
In order to use the obtained hydrogen for fuel cells and the like, it must be high-purity hydrogen.
However, it has been found that the purity of hydrogen is low and cannot be used for hydrogen for fuel cells only by reacting chips such as aluminum alloy with an alkaline aqueous solution.
本発明は、上記技術的課題に鑑みて、工場等にて発生するアルミニウム合金等の小さい細片物を原材料に用いても高純度の水素が得られる製造方法及び製造装置の提供を目的とする。 In view of the above technical problems, an object of the present invention is to provide a manufacturing method and a manufacturing apparatus capable of obtaining high-purity hydrogen even when small pieces such as aluminum alloy generated in a factory or the like are used as raw materials. ..
本発明に係る水素の製造方法は、アルミニウム又はアルミニウム合金の小さい細片物と水とを混合するステップと、前記細片物と水との混合物から余剰の水をフィルター除去するステップと、前記余剰の水が除去された含水細片物とアルカリ性水溶液とを混合し水素を発生させるステップとを有することを特徴とする。
ここで、アルミニウム合金等の小さい細片物と表現したのは、工場におけるアルミ製品の機械加工にて発生する切粉等のみならず、アルミダイカスト品，アルミ重力鋳造品，アルミ押出材，アルミ圧延材等のいろいろな製造工程に発生する色々な状態の細いアルミ片，アルミ粒状物等も、本発明の対象にする趣旨である。
The method for producing hydrogen according to the present invention includes a step of mixing small pieces of aluminum or an aluminum alloy with water, a step of filtering out excess water from the mixture of the fine pieces and water, and the excess. It is characterized by having a step of mixing a water-containing fragment from which water has been removed and an alkaline aqueous solution to generate hydrogen.
Here, small pieces such as aluminum alloys are expressed not only as chips generated by machining aluminum products in factories, but also aluminum die cast products, aluminum gravity casting products, aluminum extruded materials, and aluminum rolling. It is an object of the present invention to use thin aluminum pieces, aluminum granules, etc. in various states generated in various manufacturing processes such as materials.
このように、アルミニウム合金等の細片物を水と混合することで、細片物の隙間に有していた空気が水に置換され、アルカリ性水溶液と反応させて、水素を発生させた場合に空気の混入を抑えることができ、水素の純度が向上した。 In this way, when fine pieces such as aluminum alloy are mixed with water, the air held in the gaps between the small pieces is replaced with water and reacted with an alkaline aqueous solution to generate hydrogen. It was possible to suppress the mixing of air and improve the purity of hydrogen.
本発明に係る水素製造装置は、アルミニウム又はアルミニウム合金の小さい細片物と水との混合槽と、前記混合槽にて得られた細片物と水の混合物から余剰水を除去するフィルター手段と、前記余剰水が除去された含水細片物とアルカリ水溶液を混合し水素を発生させる反応タンクと、前記反応タンクにて発生した水素を貯留する貯留タンクとを有することを特徴とする。
この場合に、反応タンクにて反応が終了した反応終了液からアルカリ水溶液を回収する固液分離手段を有しているのが好ましい。
The hydrogen production apparatus according to the present invention comprises a mixing tank of small pieces of aluminum or an aluminum alloy and water, and a filter means for removing excess water from the mixture of fine pieces and water obtained in the mixing tank. It is characterized by having a reaction tank for generating hydrogen by mixing a water-containing fragment from which excess water has been removed and an alkaline aqueous solution, and a storage tank for storing hydrogen generated in the reaction tank.
In this case, it is preferable to have a solid-liquid separation means for recovering the alkaline aqueous solution from the reaction termination liquid in which the reaction is completed in the reaction tank.
本発明に係る水素の製造方法は、アルミニウム合金等の切粉のような細片物を原材料にして水素を製造した場合に、空気の混入を抑えることができ、ＩＳＯ１４６８７−２の基準をクリアーする高純度の水素が得られる。 The method for producing hydrogen according to the present invention can suppress the mixing of air when hydrogen is produced from fine pieces such as chips of aluminum alloy as a raw material, and clears the standard of ISO14687-2. High-purity hydrogen can be obtained.
本発明に係る水素の製造方法に適した装置の構成例を図１に基づいて説明する。
切粉等の小さいアルミニウム合金等の細片物と水を混合する混合槽１を有する。
混合槽１で得られた混合物をフィルターを備えた余剰水の除去槽２にポンプＰ１等にて輸送する。
この段階では、切粉の隙間に水が含有された状態にあり、アルカリ性水溶液が貯留されている反応タンク３にポンプＰ２にて投入される。
アルカリ水溶液は、水酸化ナトリウム，水酸化カリウム等のｐＨが１３以上の水溶液である。
反応タンク３では、アルミニウムがアルカリ性水溶液にアルミン酸イオンとして溶解し、水素が発生する。
反応した水素は、洗浄槽７を経由して貯留タンク８に貯留される。
反応が終了した反応終了液は、ポンプＰ３にて反応終了液タンク４にポンプアップされて冷却される。
水酸化アルミニウムを折出させた後に、ポンプＰ４にて輸送され、フィルタープレス６等を用いて固液分離される。
アルカリ水溶液は回収槽５を経由して、ポンプＰ５により反応タンク３にリターンされる。
A configuration example of an apparatus suitable for the hydrogen production method according to the present invention will be described with reference to FIG.
It has a
The mixture from the
At this stage, is in the gap between the chips in a state where water is contained, are charged to the reaction tank 3 where the alkaline aqueous solution is stored in the pump P 2.
The alkaline aqueous solution is an aqueous solution having a pH of 13 or more, such as sodium hydroxide and potassium hydroxide.
In the reaction tank 3, aluminum is dissolved in an alkaline aqueous solution as aluminate ions to generate hydrogen.
The reacted hydrogen is stored in the storage tank 8 via the washing tank 7.
The reaction terminated liquid that the reaction has ended, is cooled is pumped up to the reaction-terminated liquid tank 4 by the pump P 3.
After the aluminum hydroxide was out folded, is transported by a pump P 4, it is solid-liquid separation using a filter press 6, and the like.
Aqueous alkali via the collecting tank 5, is returned to the reaction tank 3 by the pump P 5.
ＪＩＳ規格にて定められているアルミダイカスト用合金を用いた製品の機械加工過程にて発生した切粉を用いて、
上記製造装置にて水素を製造したところ、水素の純度はＩＳＯに定められている以上を確保していた。
Using chips generated in the machining process of products using aluminum die-casting alloys specified in JIS standards,
When hydrogen was produced by the above-mentioned production apparatus, the purity of hydrogen was assured to be higher than that specified in ISO.
１ 混合槽
２ 除去槽
３ 反応タンク
４ 反応終了液タンク
５ 回収槽
６ フィルタープレス
７ 洗浄槽
８ 水素の貯留タンク
1 Mixing tank 2 Removal tank 3 Reaction tank 4 Reaction end liquid tank 5 Recovery tank 6 Filter press 7 Cleaning tank 8 Hydrogen storage tank
Claims (4)
前記細片物と水との混合物から余剰の水をフィルター除去するステップと、前記余剰の水が除去された含水細片物とアルカリ性水溶液とを混合し水素を発生させるステップとを有することを特徴とする水素の製造方法。 The step of mixing small pieces of aluminum or aluminum alloy with water,
It is characterized by having a step of filtering out excess water from the mixture of the fine pieces and water, and a step of mixing the water-containing fine pieces from which the excess water has been removed and an alkaline aqueous solution to generate hydrogen. Hydrogen production method.
前記混合槽にて得られた細片物と水の混合物から余剰水を除去するフィルター手段と、
前記余剰水が除去された含水細片物とアルカリ水溶液を混合し水素を発生させる反応タンクと、
前記反応タンクにて発生した水素を貯留する貯留タンクとを有することを特徴とする水素製造装置。 A mixing tank of small pieces of aluminum or aluminum alloy and water,
A filter means for removing excess water from a mixture of fine particles and water obtained in the mixing tank, and
A reaction tank that generates hydrogen by mixing the hydrous debris from which excess water has been removed and an alkaline aqueous solution, and
A hydrogen production apparatus comprising a storage tank for storing hydrogen generated in the reaction tank.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020090601A JP7470941B2 (en) | 2020-05-25 | 2020-05-25 | Hydrogen production method and production device |
| CN202110143476.0A CN113772622A (en) | 2020-05-25 | 2021-02-02 | Hydrogen production method and production apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020090601A JP7470941B2 (en) | 2020-05-25 | 2020-05-25 | Hydrogen production method and production device |
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| Publication Number | Publication Date |
|---|---|
| JP2021187684A true JP2021187684A (en) | 2021-12-13 |
| JP7470941B2 JP7470941B2 (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2020090601A Active JP7470941B2 (en) | 2020-05-25 | 2020-05-25 | Hydrogen production method and production device |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004210591A (en) | 2002-12-27 | 2004-07-29 | Itec Co Ltd | Apparatus and method of producing gaseous hydrogen |
| JP2011122202A (en) | 2009-12-10 | 2011-06-23 | Central Glass Co Ltd | Alloy for hydrogen generation and method for producing the same |
| JP5821330B2 (en) | 2011-02-21 | 2015-11-24 | 株式会社エクォス・リサーチ | Fuel cell catalyst manufacturing equipment |
| JP2016509570A (en) | 2013-02-01 | 2016-03-31 | レフレクティア，エセ．アー． | Method for producing hydrogen by reaction with aluminum |
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| CN113772622A (en) | 2021-12-10 |
| JP7470941B2 (en) | 2024-04-19 |
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