JP5033328B2 - Hydrogen storage tank - Google Patents

Hydrogen storage tank Download PDF

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JP5033328B2
JP5033328B2 JP2005372738A JP2005372738A JP5033328B2 JP 5033328 B2 JP5033328 B2 JP 5033328B2 JP 2005372738 A JP2005372738 A JP 2005372738A JP 2005372738 A JP2005372738 A JP 2005372738A JP 5033328 B2 JP5033328 B2 JP 5033328B2
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hydrogen
adsorbent
storage tank
molded body
hydrogen adsorbent
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JP2007167820A (en
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光矢 細江
良悟 坂本
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Honda Motor Co Ltd
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    • 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
    • Y02E60/32—Hydrogen storage
    • 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
    • Y02E60/50—Fuel cells

Description

本発明は、水素ガスを吸着ないし吸蔵する水素吸着材成形体を収容した水素貯蔵タンクに関する。
The present invention relates to a hydrogen storage tank containing a hydrogen adsorbent molded body that adsorbs or occludes hydrogen gas.

近年における環境保護への関心の高まりから、燃料電池を搭載した燃料電池車が着目されている。燃料電池車は燃料電池を走行駆動源とするので、ガソリンや軽油を燃焼させる必要がなく、従って、炭化水素ガスやＮＯｘ、ＳＯｘ等を排出することがないからである。   In recent years, a fuel cell vehicle equipped with a fuel cell has attracted attention due to the growing interest in environmental protection. This is because the fuel cell vehicle uses the fuel cell as a travel drive source, so there is no need to burn gasoline or light oil, and therefore no hydrocarbon gas, NOx, SOx, etc. are discharged.

燃料電池を運転するに際しては、燃料ガス、例えば、水素ガスを供給する必要がある。このため、燃料電池には水素貯蔵タンクが付設される。この水素貯蔵タンクにおける水素貯蔵量が多いほど燃料電池の運転時間を長期化することができるので、容器内に水素吸着材を収容して水素貯蔵タンクを構成することが種々検討されている。この場合、水素吸着材が水素を吸着保持するので、水素吸着材が収容されていない場合に比して多くの水素を貯留することができるからである。   When operating the fuel cell, it is necessary to supply a fuel gas, for example, hydrogen gas. For this reason, a hydrogen storage tank is attached to the fuel cell. As the amount of hydrogen stored in the hydrogen storage tank increases, the operation time of the fuel cell can be extended. Therefore, various studies have been made on the construction of a hydrogen storage tank by containing a hydrogen adsorbent in the container. In this case, since the hydrogen adsorbent adsorbs and holds hydrogen, more hydrogen can be stored as compared with the case where the hydrogen adsorbent is not accommodated.

この種の水素吸着材として、近時、金属−有機骨格構造体が特に着目されている（例えば、特許文献１参照）。金属−有機骨格構造体は、金属原子又は金属イオンを有機分子又は有機イオンが囲繞するように配位結合した錯体の１種であり、ゲスト分子が存在しない場合であっても安定な多孔性骨格構造を維持する。水素ガスは、この多孔性骨格構造内に吸着される。   Recently, as this type of hydrogen adsorbent, a metal-organic framework has attracted particular attention (see, for example, Patent Document 1). The metal-organic skeleton structure is a kind of a complex in which a metal atom or a metal ion is coordinated so that an organic molecule or an organic ion surrounds it, and a stable porous skeleton even in the absence of a guest molecule. Maintain structure. Hydrogen gas is adsorbed in the porous skeleton structure.

金属−有機骨格構造体は、特許文献２に記載されるように、その粉末を基材に接触させ、例えば、ペレットに圧縮成形されて水素吸着材として供される。   As described in Patent Document 2, the metal-organic skeleton structure is brought into contact with a base material, and is compressed into a pellet, for example, and used as a hydrogen adsorbent.

米国特許出願公開第２００３／０１４８１６５号明細書US Patent Application Publication No. 2003/0148165 米国特許出願公開第２００３／０２２２０２３号明細書US Patent Application Publication No. 2003/0222023

水素吸着材が水素ガスを吸着ないし吸蔵する際には発熱が起こるが、この発熱に伴い、水素吸着材の水素ガス吸着速度が低下するという不具合が指摘されている。   Heat generation occurs when the hydrogen adsorbent adsorbs or occludes hydrogen gas, but it has been pointed out that the hydrogen gas adsorption rate of the hydrogen adsorbent decreases with this heat generation.

このような事態が生じると、水素貯蔵タンクへの水素ガスの充填に長時間を要するとともに、充填量も低下するという不都合を招く。また、場合によっては、吸着速度と脱離速度が平衡になることが懸念される。   When such a situation occurs, it takes a long time to fill the hydrogen storage tank with hydrogen gas, and the amount of filling is reduced. In some cases, there is a concern that the adsorption rate and the desorption rate are in equilibrium.

本発明は上記した問題を解決するためになされたもので、吸着ないし吸蔵に伴い発生した熱を速やかに放熱することが可能で、このために水素ガス吸着速度が低下することを回避可能な水素吸着材成形体を収容した水素貯蔵タンクを提供することを目的とする。 The present invention has been made to solve the above-described problems, and can quickly dissipate the heat generated by adsorption or occlusion, thereby preventing a decrease in the hydrogen gas adsorption rate. It aims at providing the hydrogen storage tank which accommodated the adsorbent molded object .

前記の目的を達成するために、本発明は、水素を吸着ないし吸蔵可能な水素吸着材を含む水素吸着材成形体であって、
熱伝導率が前記水素吸着材に比して大きな高熱伝導率成分をさらに含むことを特徴とする。 In order to achieve the above object, the present invention is a hydrogen adsorbent molded body comprising a hydrogen adsorbent capable of adsorbing or occluding hydrogen,
It further includes a high thermal conductivity component having a thermal conductivity higher than that of the hydrogen adsorbent.

水素吸着材が水素ガスを吸着ないし吸蔵することに伴って発生した熱は、前記高熱伝導率成分を介して速やかに隣接する水素吸着材成形体に伝達される。この熱が最終的に水素貯蔵タンクの外壁に伝達されることにより、大気への放熱が行われる。   The heat generated as the hydrogen adsorbent adsorbs or occludes hydrogen gas is quickly transferred to the adjacent hydrogen adsorbent shaped body through the high thermal conductivity component. This heat is finally transferred to the outer wall of the hydrogen storage tank, so that heat is released to the atmosphere.

すなわち、本発明によれば、高熱伝導率成分を含む成形体としたことで、水素吸着材の発熱を速やかに系外へ伝達することができる。このため、水素吸着材を低温に保つことが容易となり、結局、水素ガス吸着速度が低下することを回避することができる。   That is, according to the present invention, by forming a molded body containing a high thermal conductivity component, the heat generated by the hydrogen adsorbent can be quickly transmitted outside the system. For this reason, it becomes easy to keep the hydrogen adsorbing material at a low temperature, and eventually it is possible to avoid a decrease in the hydrogen gas adsorption rate.

当該水素吸着材成形体の好適な例としては、前記水素吸着材の粉末と前記高熱伝導率成分の粉末との混合粉末が成形された複合成形体が挙げられる。又は、水素吸着材の成形体と高熱伝導率成分のシート体とが接合されたものであってもよい。   Preferable examples of the hydrogen adsorbent molded body include a composite molded body in which a mixed powder of the hydrogen adsorbent powder and the high thermal conductivity component powder is molded. Or the molded object of a hydrogen adsorbent and the sheet | seat body of a high thermal conductivity component may be joined.

また、本発明は、水素ガスを吸着ないし吸蔵する水素吸着材を含む水素吸着材成形体を収容した水素貯蔵タンクであって、
当該水素貯蔵タンクの内壁と前記水素吸着材成形体との間に介在され、前記内壁及び前記水素吸着材成形体に当接して前記水素吸着材成形体からの熱を前記内壁に伝達するための熱伝達部材を有することを特徴とする。 Further, the present invention is a hydrogen storage tank containing a hydrogen adsorbent molded body containing a hydrogen adsorbent that adsorbs or occludes hydrogen gas,
Interposed between the inner wall of the hydrogen storage tank and the hydrogen adsorbent molded body, abutting on the inner wall and the hydrogen adsorbent molded body, for transferring heat from the hydrogen adsorbent molded body to the inner wall It has a heat transfer member.

このような構成とすることにより、水素吸着材が発熱した場合であってもその熱を水素貯蔵タンクの外壁まで伝達させることが容易となり、結局、大気への放熱が速やかに実施される。従って、水素吸着材を低温に保つことが容易となり、水素吸着材の水素ガス吸着速度を維持することができる。   By adopting such a configuration, even when the hydrogen adsorbent generates heat, it becomes easy to transfer the heat to the outer wall of the hydrogen storage tank, and as a result, heat dissipation to the atmosphere is quickly performed. Therefore, it becomes easy to keep the hydrogen adsorbent at a low temperature, and the hydrogen gas adsorption speed of the hydrogen adsorbent can be maintained.

この水素貯蔵タンクには、冷却媒体が流通するための管体を設けることが好ましい。この管体に冷却媒体を流通させることにより、水素吸着材からの熱が速やかに該冷却媒体に伝達される。この冷却媒体が水素貯蔵タンクの系外に導出されることで、水素吸着材からの放熱がさらに容易となる。結局、水素吸着材の水素ガス吸着速度を維持することが一層容易となる。   The hydrogen storage tank is preferably provided with a tube for circulating a cooling medium. By causing the cooling medium to flow through the tube, the heat from the hydrogen adsorbent is quickly transmitted to the cooling medium. Since this cooling medium is led out of the system of the hydrogen storage tank, heat dissipation from the hydrogen adsorbent is further facilitated. Eventually, it becomes easier to maintain the hydrogen gas adsorption rate of the hydrogen adsorbent.

ここで、水素貯蔵タンクに収容する水素吸着材成形体の寸法は、互いに相違することが好ましい。この場合、大寸法の水素吸着材成形体同士の間に小寸法の水素吸着材成形体が進入可能となり、結局、水素吸着材成形体の充填量が大きくなる。従って、水素ガス吸着量を大きくすることができる。   Here, it is preferable that the dimensions of the hydrogen adsorbent molded bodies accommodated in the hydrogen storage tank are different from each other. In this case, a small-sized hydrogen adsorbent molded body can enter between the large-sized hydrogen adsorbent molded bodies, and eventually the filling amount of the hydrogen adsorbent molded body increases. Therefore, the hydrogen gas adsorption amount can be increased.

収容される水素吸着材成形体としては、上記した成形体、すなわち、熱伝導率が前記水素吸着材に比して大きな高熱伝導率成分をさらに含む成形体が好適である。この場合、熱伝達速度を一層大きくすることが可能となるので、水素吸着材を低温に保つことが一層容易となる。   As the hydrogen adsorbent molded body to be accommodated, the above-described molded body, that is, a molded body further including a high thermal conductivity component having a thermal conductivity larger than that of the hydrogen adsorbent is suitable. In this case, since the heat transfer rate can be further increased, it is easier to keep the hydrogen adsorbent at a low temperature.

本発明によれば、熱伝導率が水素吸着材に比して大きな高熱伝導率成分を含むようにして成形体とするようにしているので、水素吸着材が水素ガスを吸着ないし吸蔵することに伴って発生した熱を速やかに伝達することが可能となる。   According to the present invention, since the molded body is made so as to include a component having a high thermal conductivity higher than that of the hydrogen adsorbent, the hydrogen adsorbent adsorbs or occludes hydrogen gas. The generated heat can be quickly transmitted.

又は、水素貯蔵タンクの内部に、水素吸着材及び水素貯蔵タンクの内壁の双方に当接する部材を設けるようにしているので、この場合においても、水素吸着材が水素ガスを吸着ないし吸蔵することに伴って発生した熱を速やかに伝達することが可能となる。   Alternatively, a member that contacts both the hydrogen adsorbent and the inner wall of the hydrogen storage tank is provided inside the hydrogen storage tank. In this case as well, the hydrogen adsorbent adsorbs or occludes hydrogen gas. It is possible to quickly transmit the heat generated therewith.

すなわち、本発明によれば、水素吸着材を低温に保つことが容易となり、結局、水素ガス吸着速度が低下することを回避することができる。   That is, according to the present invention, it is easy to keep the hydrogen adsorbing material at a low temperature, and eventually it is possible to avoid a decrease in the hydrogen gas adsorption rate.

以下、本発明に係る水素吸着材成形体につきそれを収容した水素貯蔵タンクとの関係で好適な実施の形態を挙げ、添付の図面を参照して詳細に説明する。   Hereinafter, the hydrogen adsorbent molded body according to the present invention will be described in detail with reference to the accompanying drawings by giving preferred embodiments in relation to the hydrogen storage tank containing the molded article.

先ず、本実施の形態に係る水素貯蔵タンク１０の全体概略斜視説明図を図１に示す。この水素貯蔵タンク１０は、有底円筒形状の容器本体１２と、該容器本体１２の内部に挿入されて筒形状に形成された筒状フィルタ１４と、容器本体１２の開口端部を閉塞する蓋部材１６とを有し、筒状フィルタ１４はステンレスからなり、容器本体１２及び蓋部材１６はアルミニウム合金からなる。   First, FIG. 1 shows an overall schematic perspective view of a hydrogen storage tank 10 according to the present embodiment. The hydrogen storage tank 10 includes a bottomed cylindrical container body 12, a cylindrical filter 14 that is inserted into the container body 12 and formed into a cylindrical shape, and a lid that closes an open end of the container body 12. The cylindrical filter 14 is made of stainless steel, and the container body 12 and the lid member 16 are made of an aluminum alloy.

外径が容器本体１２の内径に比して小さく設定された筒状フィルタ１４の内部には、該筒状フィルタ１４の内径に対応する直径を有するアルミニウム合金製のディスク形状板１８が複数枚、互いに平行となるように挿入されている。すなわち、各ディスク形状板１８の側周壁は、筒状フィルタ１４の内周壁に当接している。そして、ディスク形状板１８、１８同士の間、及び、最上のディスク形状板１８と蓋部材１６との間に、後述する水素吸着材成形体を収容するための収容室２０が形成される。   Inside the cylindrical filter 14 whose outer diameter is set smaller than the inner diameter of the container body 12, a plurality of aluminum alloy disk-shaped plates 18 having a diameter corresponding to the inner diameter of the cylindrical filter 14, They are inserted so as to be parallel to each other. That is, the side peripheral wall of each disk-shaped plate 18 is in contact with the inner peripheral wall of the cylindrical filter 14. A storage chamber 20 is formed between the disk-shaped plates 18 and 18 and between the uppermost disk-shaped plate 18 and the lid member 16 to store a hydrogen adsorbent molded body to be described later.

また、各ディスク形状板１８の略中心部には貫通孔２２がそれぞれ設けられており、各貫通孔２２を通るようにしてアルミニウム合金製の中空円筒管２４が嵌合されている。この中空円筒管２４の寸法は、その一端部が容器本体１２の底面から突出するように設定されている。   Further, through holes 22 are respectively provided at substantially central portions of the respective disk-shaped plates 18, and aluminum alloy hollow cylindrical tubes 24 are fitted so as to pass through the respective through holes 22. The dimensions of the hollow cylindrical tube 24 are set so that one end of the hollow cylindrical tube 24 protrudes from the bottom surface of the container body 12.

そして、筒状フィルタ１４の外周壁と容器本体１２の内周壁との間には、アルミニウム合金製の４本の平板状部材２６が介装されている。各平板状部材２６は筒状フィルタ１４の外周壁に接合され、且つ容器本体１２の内周壁に当接している。また、各平板状部材２６には、水素ガスの流通を容易にするために複数個の開口２８が貫通形成されている。   And between the outer peripheral wall of the cylindrical filter 14, and the inner peripheral wall of the container main body 12, the four flat members 26 made from an aluminum alloy are interposed. Each flat plate member 26 is joined to the outer peripheral wall of the cylindrical filter 14 and is in contact with the inner peripheral wall of the container body 12. Each flat member 26 is formed with a plurality of openings 28 so as to facilitate the flow of hydrogen gas.

円板形状の蓋部材１６の略中心部には、前記中空円筒管２４を突出させるための貫通孔３０が形成されている。また、蓋部材１６には、水素供給口３２が形成された環状突出部３４が設けられている。この環状突出部３４は、容器本体１２の内周壁と筒状フィルタ１４の外周壁との間に介在する位置に配設されている。   A through hole 30 for projecting the hollow cylindrical tube 24 is formed at a substantially central portion of the disc-shaped lid member 16. Further, the lid member 16 is provided with an annular protrusion 34 in which a hydrogen supply port 32 is formed. The annular protrusion 34 is disposed at a position interposed between the inner peripheral wall of the container body 12 and the outer peripheral wall of the cylindrical filter 14.

次に、以上のように構成された水素貯蔵タンク１０の各収容室２０に収容される水素吸着材成形体につき図２〜図４を参照して説明する。   Next, the hydrogen adsorbent molded body accommodated in each accommodation chamber 20 of the hydrogen storage tank 10 configured as described above will be described with reference to FIGS.

図２〜図４に示される水素吸着材成形体３６、３８、４０は、水素吸着材と、該水素吸着材に比して熱伝導率が大きな高熱伝導率成分とを含む。この中、水素吸着材成形体３６は、水素吸着材の粉末と高熱伝導率成分との粉末の混合粉末を成形することによって作製されたものである。このような水素吸着材成形体３６は、円筒型、球形、多角柱等の所定形状のキャビティが形成される成形型を使用し、混合粉末を圧縮成形することによって得られる。   The hydrogen adsorbent molded bodies 36, 38, and 40 shown in FIGS. 2 to 4 include a hydrogen adsorbent and a high thermal conductivity component having a higher thermal conductivity than the hydrogen adsorbent. Among them, the hydrogen adsorbent molded body 36 is produced by molding a mixed powder of a hydrogen adsorbent powder and a high thermal conductivity component. Such a hydrogen adsorbent molded body 36 is obtained by compression molding the mixed powder using a molding die in which a cavity having a predetermined shape such as a cylindrical shape, a spherical shape, or a polygonal column is formed.

高熱伝導率成分は、図３に示すように、シート材４２であってもよい。この場合、シート材４２をキャビティの形状に対応する形状に裁断し、裁断後の該シート材４２をキャビティに収容した後に水素吸着材の粉末を収容し、この状態で圧縮成形を行うことによって作製することができる。この場合、シート材４２上に水素吸着材からなる成形層４４が設けられる。   The high thermal conductivity component may be a sheet material 42 as shown in FIG. In this case, the sheet material 42 is cut into a shape corresponding to the shape of the cavity, and after the cut sheet material 42 is accommodated in the cavity, the hydrogen adsorbent powder is accommodated, and compression molding is performed in this state. can do. In this case, a molding layer 44 made of a hydrogen adsorbent is provided on the sheet material 42.

高熱伝導率成分のシート材４２を使用した場合、混合粉末を圧縮成形体とした場合に比して熱伝導の経路が連続しているので、熱伝導性が優れるようになるという利点がある。   When the sheet material 42 having a high thermal conductivity component is used, the heat conduction path is continuous as compared with the case where the mixed powder is formed into a compression molded body, and thus there is an advantage that the thermal conductivity becomes excellent.

又は、水素吸着材の粉末を所望の形状に予め圧縮成形し、得られた成形体４６を高熱伝導率成分のシート材４２に接合するようにしてもよい。この接合は、例えば、成形体４６及びシート材４２の双方を耐圧性高分子シートで被覆し、次いで、等方静水圧プレス（ＣＩＰ）成形を行うことによって実施することができる。この場合、水素吸着材を粉末状のまま収容する場合に比して嵩密度を２倍程度大きくすることができるので好適である。   Alternatively, the hydrogen adsorbent powder may be pre-compressed into a desired shape, and the resulting molded body 46 may be joined to the sheet material 42 having a high thermal conductivity component. This joining can be performed, for example, by covering both the compact 46 and the sheet material 42 with a pressure-resistant polymer sheet, and then performing isotropic isostatic pressing (CIP) molding. In this case, it is preferable because the bulk density can be increased by about twice as compared with the case where the hydrogen adsorbent is accommodated in a powder form.

以上の水素吸着材成形体３６、３８、４０を作製する際に用いる水素吸着材は、水素ガスを可逆的に吸着ないし吸蔵可能な物質であれば特に限定されるものではないが、錯体、活性炭、カーボンナノチューブ、アモルファスカーボン、グラファイト、ゼオライト又はメソポーラスシリケート、水素吸蔵合金が好適な例として挙げられる。   The hydrogen adsorbent used for producing the hydrogen adsorbent molded bodies 36, 38, 40 is not particularly limited as long as it is a substance capable of reversibly adsorbing or occluding hydrogen gas. Carbon nanotubes, amorphous carbon, graphite, zeolite or mesoporous silicate, and hydrogen storage alloys are preferable examples.

この中、錯体の好適な例としては、金属原子又は金属イオンを有機分子又は有機イオンが囲繞して配位結合した金属−有機骨格構造体が挙げられる。具体的には、［Ｍ2（４，４’−ビピリジン）3（ＮＯ3）4］（ただし、ＭはＣｏ、Ｎｉ、Ｚｎのいずれか）、［Ｍ2（１，４−ベンゼンジカルボキシレートアニオン）2］（ただし、ＭはＣｕ、Ｚｎのいずれか）、［Ｆｅ2（トランス−４，４’−アゾピリジン）4（ＮＣＳ）4］等が例示される。 Among these, preferred examples of the complex include a metal-organic skeleton structure in which a metal atom or metal ion is surrounded by an organic molecule or organic ion and coordinated. Specifically, [M 2 (4,4′-bipyridine) 3 (NO 3 ) 4 ] (wherein M is any one of Co, Ni and Zn), [M 2 (1,4-benzenedicarboxylate) Anion) 2 ] (wherein M is either Cu or Zn), [Fe 2 (trans-4,4′-azopyridine) 4 (NCS) 4 ] and the like.

又は、その一般式がＭ4Ｏ（芳香族ジカルボキシレートアニオン）3で表されるものであってもよい。Ｍの好適な例としては、Ｚｎ、Ｍｇ、Ｓｃ、Ｔｉ、Ｖ、Ｃｒ、Ｍｎ、Ｆｅ、Ｃｏ、Ｎｉ、Ｃｕ、Ａｌ、Ｒｕ、Ｒｈ、Ｐｄ、Ａｇ、Ｐｔが挙げられる。また、芳香族ジカルボキシレートアニオンに代え、芳香族ジカルボキシレートアニオンの芳香環中に存在するＨの少なくとも１つが官能基に置換された芳香族ジカルボキシレートアニオン誘導体で構成されたものであってもよい。 Alternatively, the general formula may be M 4 O (aromatic dicarboxylate anion) 3 . Preferable examples of M include Zn, Mg, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Ru, Rh, Pd, Ag, and Pt. Further, instead of the aromatic dicarboxylate anion, the aromatic dicarboxylate anion is composed of an aromatic dicarboxylate anion derivative in which at least one of H present in the aromatic ring of the aromatic dicarboxylate anion is substituted with a functional group. Also good.

芳香族ジカルボキシレートアニオン又はその誘導体の好適な例としては、１，４−ベンゼンジカルボキシレートアニオン、２−ブロモ−１，４−ベンゼンジカルボキシレートアニオン、２−アミノ−１，４−ベンゼンジカルボキシレートアニオン、２，５−プロピル−１，４−ベンゼンジカルボキシレートアニオン、２，５−ペンチル−１，４−ベンゼンジカルボキシレートアニオン、シクロブテン−１，４−ベンゼンジカルボキシレートアニオン、１，４−ナフタレンジカルボキシレートアニオン、２，６−ナフタレンジカルボキシレートアニオン、４，４’−ビフェニルジカルボキシレートアニオン、４，５，９，１０−テトラヒドロピレン−２，７−ジカルボキシレートアニオン、ピレン−２，７−ジカルボキシレートアニオン、４，４”−テルフェニルジカルボキシレートアニオン等が挙げられる。各々の構造式は、下記の通りである。   Preferable examples of the aromatic dicarboxylate anion or a derivative thereof include 1,4-benzenedicarboxylate anion, 2-bromo-1,4-benzenedicarboxylate anion, 2-amino-1,4-benzenedi Carboxylate anion, 2,5-propyl-1,4-benzenedicarboxylate anion, 2,5-pentyl-1,4-benzenedicarboxylate anion, cyclobutene-1,4-benzenedicarboxylate anion, 1, 4-naphthalenedicarboxylate anion, 2,6-naphthalenedicarboxylate anion, 4,4′-biphenyldicarboxylate anion, 4,5,9,10-tetrahydropyrene-2,7-dicarboxylate anion, pyrene -2,7-dicarboxylate anion, 4, "-. Terphenyl dicarboxylate anion, etc. Each structural formula is as follows.

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

Figure 0005033328
Figure 0005033328

一方、高熱伝導率成分は、水素吸着材として用いた物質よりも熱伝導率が高い物質であればよく、特に限定されるものではないが、好適な例としては、Ｃｕ、８８．５％Ｃｕ−１０％Ｎｉ−１．５％Ｆｅ、９０．５％Ｃｕ−７％Ａｌ−２．５％Ｆｅ、６９．３％Ｃｕ−３０％Ｎｉ−０．７％Ｆｅ等のＣｕ合金、Ａｌ、９９％Ａｌ−０．５％Ｆｅ−０．５％Ｓｉ、９９．５％Ａｌ−０．３％Ｆｅ−０．２％Ｓｉ等のいわゆる１０００系Ａｌ合金（ＪＩＳ）、９５．５％Ａｌ−４．５％Ｃｕ等のＡｌ合金が挙げられる。なお、各数字は質量％である。   On the other hand, the high thermal conductivity component is not particularly limited as long as it has a higher thermal conductivity than the material used as the hydrogen adsorbent, and suitable examples include Cu, 88.5% Cu. Cu alloys such as -10% Ni-1.5% Fe, 90.5% Cu-7% Al-2.5% Fe, 69.3% Cu-30% Ni-0.7% Fe, Al, 99 So-called 1000 series Al alloys (JIS) such as% Al-0.5% Fe-0.5% Si, 99.5% Al-0.3% Fe-0.2% Si, 95.5% Al-4 Al alloy such as 5% Cu is mentioned. Each number is% by mass.

例示した以上の物質は、グラファイトをはじめとする上記各種水素吸着材に比して熱容量が大きい。このため、水素吸着材が発熱した場合、その熱を速やかに吸収する。従って、水素吸着材からの熱が伝達されるので、該水素吸着材が高温になることが回避される。   The above-described substances have a larger heat capacity than the above-mentioned various hydrogen adsorbents including graphite. For this reason, when the hydrogen adsorbent generates heat, the heat is quickly absorbed. Therefore, since the heat from the hydrogen adsorbent is transferred, the hydrogen adsorbent is prevented from reaching a high temperature.

本実施の形態においては、上記したような物質を含む水素吸着材成形体３６、３８、４０のいずれか１種以上が様々な寸法で作製され、各収容室２０に収容される。このように様々な寸法の水素吸着材成形体３６、３８、４０を用いることで、すべて同寸法の水素吸着材成形体３６、３８、４０を充填する場合に比して、水素吸着材成形体３６、３８、４０の充填後の間隙を小さくすることができる。外寸が大なる水素吸着材成形体３６、３８、４０（第１の成形体）同士の間に外寸が小なる水素吸着材成形体３６、３８、４０（第２の成形体）が進入可能となり、結局、水素吸着材成形体３６、３８、４０の充填量が増えるので水素ガス吸着量が大きくなるからである。 In the present embodiment, any one or more of the hydrogen adsorbent molded bodies 36, 38, and 40 containing the above-described substances are produced with various dimensions and are accommodated in the respective accommodation chambers 20. As described above, by using the hydrogen adsorbent molded bodies 36, 38, and 40 having various dimensions, the hydrogen adsorbent molded bodies are compared with the case of filling the hydrogen adsorbent molded bodies 36, 38, and 40 having the same dimensions. The gap after filling 36, 38 and 40 can be reduced. External size becomes large hydrogen adsorbent shaped body 36, 38, 40 (first molded body) outer dimension is small hydrogen adsorbent shaped body 36, 38, 40 (second molded body) between each other enters This is because, as a result, the filling amount of the hydrogen adsorbent molded bodies 36, 38, 40 increases, so that the hydrogen gas adsorption amount increases.

本実施の形態に係る水素貯蔵タンク１０は、基本的には以上のように構成されるものであり、次にその作用効果について説明する。   The hydrogen storage tank 10 according to the present embodiment is basically configured as described above. Next, the function and effect will be described.

この水素貯蔵タンク１０に水素ガスを充填する際には、中空円筒管２４に予め水等の冷却媒体が流通され、その後、水素供給口３２を介して、容器本体１２の内周壁と筒状フィルタ１４の外周壁との間のクリアランスに水素ガスが導入される。そして、水素ガスは、筒状フィルタ１４の目を通過し、又は、平板状部材２６の開口２８を経由した後に筒状フィルタ１４の目を通過して収容室２０に到達し、水素吸着材成形体３６、３８、４０に接触する。水素吸着材成形体３６、３８、４０は、このようにして自身に接触した水素ガスを吸着ないし吸蔵して保持する。   When the hydrogen gas is filled into the hydrogen storage tank 10, a cooling medium such as water is circulated through the hollow cylindrical tube 24 in advance, and then the inner peripheral wall of the container body 12 and the cylindrical filter through the hydrogen supply port 32. Hydrogen gas is introduced into the clearance between the 14 outer peripheral walls. Then, the hydrogen gas passes through the eyes of the cylindrical filter 14 or passes through the openings of the flat plate member 26 and then passes through the eyes of the cylindrical filter 14 to reach the storage chamber 20, and forms a hydrogen adsorbent. Contact body 36, 38, 40. The hydrogen adsorbent molded bodies 36, 38, and 40 hold the hydrogen gas that has contacted itself in this manner by adsorbing or occluding it.

水素吸着材成形体３６、３８、４０中の水素吸着材が水素ガスを吸着ないし吸蔵することに伴い、該水素吸着材が発熱を起こす。しかしながら、上記したように、水素吸着材成形体３６、３８、４０に高熱伝導率成分が含まれているので（図２〜図４参照）、この熱は、該高熱伝導率成分を介して速やかに別の水素吸着材成形体３６、３８、４０に逐次的に伝達される。   As the hydrogen adsorbent in the hydrogen adsorbent shaped bodies 36, 38, 40 adsorbs or occludes hydrogen gas, the hydrogen adsorbent generates heat. However, as described above, the hydrogen adsorbent molded bodies 36, 38, and 40 contain a high thermal conductivity component (see FIGS. 2 to 4), so that this heat is promptly transmitted through the high thermal conductivity component. Are sequentially transmitted to the other hydrogen adsorbent shaped bodies 36, 38, 40.

水素吸着材成形体３６、３８、４０に伝達された熱は、水素貯蔵タンク１０を構成するディスク形状板１８、又は筒状フィルタ１４の内壁に伝達され、さらに、中空円筒管２４又は平板状部材２６に伝達されて、最終的に蓋部材１６又は容器本体１２に伝達される。これら蓋部材１６又は容器本体１２を大気中で自然冷却、又は冷却ユニットで強制的に冷却することにより、熱が速やかに除去される。   The heat transmitted to the hydrogen adsorbent moldings 36, 38, 40 is transmitted to the disk-shaped plate 18 or the inner wall of the cylindrical filter 14 constituting the hydrogen storage tank 10, and further, the hollow cylindrical tube 24 or the flat plate-shaped member. 26 and finally transmitted to the lid member 16 or the container body 12. The lid member 16 or the container main body 12 is naturally cooled in the atmosphere or forcedly cooled by a cooling unit, so that heat is quickly removed.

すなわち、本実施の形態においては、水素吸着材成形体３６、３８、４０に高熱伝導率成分を含め、且つ水素吸着材から熱を受容して大気まで伝達するための熱伝達部材（筒状フィルタ１４、ディスク形状板１８、中空円筒管２４及び平板状部材２６）を水素貯蔵タンク１０に収容するようにしているので、水素吸着材が発熱した場合であっても、その熱が水素貯蔵タンク１０を構成する容器本体１２及び蓋部材１６の外壁に速やかに伝達され、大気に放熱される。このため、水素吸着材を低温に保つことが可能となるので、該水素吸着材の水素ガス吸着速度を維持することができる。   That is, in the present embodiment, the hydrogen adsorbent molded bodies 36, 38, 40 include a high thermal conductivity component, and a heat transfer member (cylindrical filter) for receiving heat from the hydrogen adsorbent and transferring it to the atmosphere. 14, the disk-shaped plate 18, the hollow cylindrical tube 24, and the flat plate member 26) are accommodated in the hydrogen storage tank 10, so that even when the hydrogen adsorbent generates heat, the heat is generated by the hydrogen storage tank 10. Is quickly transmitted to the outer wall of the container main body 12 and the lid member 16 constituting the structure, and radiated to the atmosphere. For this reason, since it becomes possible to maintain a hydrogen adsorbent at low temperature, the hydrogen gas adsorption speed of the hydrogen adsorbent can be maintained.

しかも、本実施の形態では、寸法が異なる水素吸着材成形体３６、３８、４０を収容して水素吸着材成形体３６、３８、４０同士の間隙を小さくするようにしている。このため、隣接する水素吸着材成形体３６、３８、４０同士の間で熱が確実に伝達されるので、水素吸着材を低温に保つことが容易となる。   Moreover, in the present embodiment, the hydrogen adsorbent molded bodies 36, 38, 40 having different dimensions are accommodated so that the gaps between the hydrogen adsorbent molded bodies 36, 38, 40 are reduced. For this reason, since heat is reliably transmitted between the adjacent hydrogen adsorbent molded bodies 36, 38, 40, it becomes easy to keep the hydrogen adsorbent at a low temperature.

さらに、中空円筒管２４には、上記したように水等の冷却媒体が流通されている。このため、水素吸着材成形体３６、３８、４０から中空円筒管２４に伝達された熱は、この冷却媒体によって吸収される。冷却媒体は、流通によって速やかに容器本体１２の外部へ導出されるので、吸収された熱も速やかに除去される。   Further, as described above, a cooling medium such as water is circulated in the hollow cylindrical tube 24. For this reason, the heat transferred from the hydrogen adsorbent molded bodies 36, 38, 40 to the hollow cylindrical tube 24 is absorbed by the cooling medium. Since the cooling medium is quickly led out of the container body 12 by circulation, the absorbed heat is also quickly removed.

このように、水素吸着材成形体３６、３８、４０の熱は、冷却媒体によっても除去される。従って、水素吸着材成形体３６、３８、４０を一層容易に低温に保つことが可能である。   Thus, the heat of the hydrogen adsorbent molded bodies 36, 38, 40 is also removed by the cooling medium. Therefore, it is possible to keep the hydrogen adsorbent shaped bodies 36, 38, 40 at a low temperature more easily.

水素吸着材として、粉末状のＺｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3を合成した。すなわち、１．２ｇの２，６−ナフタレンジカルボン酸と、１１ｇのＺｎ（ＮＯ3）2・４Ｈ2Ｏとを、密閉容器中で１０００ｍｌのＤＥＦに溶解した。この溶液を、密閉容器ごと９５℃で２０時間保持して反応を進行させた。 As a hydrogen adsorbent, powdery Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 was synthesized. That is, 1.2 g of 2,6-naphthalenedicarboxylic acid and 11 g of Zn (NO 3 ) 2 .4H 2 O were dissolved in 1000 ml of DEF in a closed container. This solution was kept in a sealed container at 95 ° C. for 20 hours to proceed the reaction.

濾過操作によって反応生成物をＤＥＦと分離した後、濾過残留物をＤＥＦで洗浄して、Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3・（ＤＥＦ）6を得た。 The reaction product was separated from DEF by filtration, and the filtration residue was washed with DEF to obtain Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 · (DEF) 6 .

さらに、この生成物を室温でクロロホルム（ＣＨＣｌ3）中に２４時間浸漬し、Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3・（ＤＥＦ）6のゲスト分子であるＤＥＦをＣＨＣｌ3に置換した。そして、真空引きでＣＨＣｌ3を除去し、Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3とした。 Furthermore, this product was immersed in chloroform (CHCl 3 ) at room temperature for 24 hours, and DEF, which is a guest molecule of Zn 4 O (2,6-naphthalenedicarboxylate anion) 3. (DEF) 6 , was added to CHCl 3 . Replaced. Then, CHCl 3 was removed by evacuation to obtain Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 .

以上の操作を個別に繰り返し行い、合計で１１０ｇの粉末状Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3を得た。 The above operation was repeated individually to obtain a total of 110 g of powdery Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 .

この粉末状Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3を適宜秤量し、温度２０℃、圧力２０ＭＰａ、プレス時間３０秒の条件下で圧縮成形し、直径５ｍｍ、厚さ３ｍｍの円柱体形状成形体を複数個作製した。 This powdery Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 is weighed appropriately and compression molded under the conditions of a temperature of 20 ° C., a pressure of 20 MPa, and a press time of 30 seconds, and a cylinder having a diameter of 5 mm and a thickness of 3 mm. A plurality of body shape molded bodies were produced.

その一方で、厚さ０．３ｍｍの１０００系アルミニウム合金（９９．５％Ａｌ−０．３％Ｆｅ−０．２％Ｓｉ）製のシート材から、直径４ｍｍの円形シートを複数枚切り出した。各円形シート上に前記円柱体形状成形体を１個積層し、積層体をナイロン製シートで被覆して、温度１５℃、圧力２０００ＭＰａ、６００秒の条件下でＣＩＰ成形を施した。これにより、直径４ｍｍ、厚さ２．８ｍｍの図４に示す積層成形体（水素吸着材成形体４０）を得た。   On the other hand, a plurality of circular sheets having a diameter of 4 mm were cut out from a sheet material made of 1000 series aluminum alloy (99.5% Al-0.3% Fe-0.2% Si) having a thickness of 0.3 mm. One cylindrical shaped molded body was laminated on each circular sheet, the laminated body was covered with a nylon sheet, and CIP molding was performed under conditions of a temperature of 15 ° C., a pressure of 2000 MPa, and 600 seconds. Thus, a laminated molded body (hydrogen adsorbent molded body 40) shown in FIG. 4 having a diameter of 4 mm and a thickness of 2.8 mm was obtained.

以上の作業とは別に、図１に示す水素貯蔵タンク１０を作製した。内容積は４５ｃｍ3とし、耐圧圧力は１７ＭＰａとした。なお、水素吸着材成形体の収容量は５０ｇとした。 Separately from the above work, a hydrogen storage tank 10 shown in FIG. 1 was produced. The internal volume was 45 cm 3 and the pressure resistance was 17 MPa. The accommodation amount of the hydrogen adsorbent molded body was 50 g.

次に、この水素貯蔵タンク１０に、図５に示すように、バルブ５０を介して水素ガス貯蔵量測定システム５２を接続した。   Next, a hydrogen gas storage amount measurement system 52 was connected to the hydrogen storage tank 10 through a valve 50 as shown in FIG.

この水素ガス貯蔵量測定システム５２には、水素貯蔵タンク１０に水素ガスを供給するための供給ライン５４と、水素貯蔵タンク１０から水素ガスを放出するための排出ライン５６とがコネクタ５８から分岐して設けられる。   In the hydrogen gas storage amount measuring system 52, a supply line 54 for supplying hydrogen gas to the hydrogen storage tank 10 and a discharge line 56 for releasing hydrogen gas from the hydrogen storage tank 10 are branched from a connector 58. Provided.

供給ライン５４は、水素ガスボンベ６０から水素貯蔵タンク１０にわたって橋架される。供給ライン５４には、水素ガスボンベ６０側から、レギュレータ６２、マニュアルバルブ６４が介装される。   The supply line 54 is bridged from the hydrogen gas cylinder 60 to the hydrogen storage tank 10. The supply line 54 is provided with a regulator 62 and a manual valve 64 from the hydrogen gas cylinder 60 side.

一方、排出ライン５６には真空ポンプ６６が介装され、この真空ポンプ６６に至るまで、水素貯蔵タンク１０側からマニュアルバルブ６８、レギュレータ７０、ニードルバルブ７２、マスフローメータ７４、自動バルブ７６が配置される。なお、図３中、参照符号７８、８０は、ともに圧力計を示す。また、参照符号８２、８４はともに熱電対であり、熱電対８２は水素貯蔵タンク１０の温度を検出し、一方、熱電対８４は大気温度を検出する。   On the other hand, a vacuum pump 66 is interposed in the discharge line 56, and until reaching the vacuum pump 66, a manual valve 68, a regulator 70, a needle valve 72, a mass flow meter 74, and an automatic valve 76 are arranged from the hydrogen storage tank 10 side. The In FIG. 3, reference numerals 78 and 80 both indicate pressure gauges. Reference numerals 82 and 84 are both thermocouples, and the thermocouple 82 detects the temperature of the hydrogen storage tank 10, while the thermocouple 84 detects the atmospheric temperature.

供給ライン５４と排出ライン５６中のガスを除去するべく、真空ポンプ６６を付勢した後、バルブ５０、マニュアルバルブ６４、６８をともに開放し、さらに自動バルブ７６を開放して、圧力が１０-3Ｔｏｒｒとなるまで真空引きを継続する。その後、マニュアルバルブ６４、６８及び自動バルブ７６を閉止する。 In order to remove the gas in exhaust line 56 and the supply line 54, after energizing the vacuum pump 66, valve 50, the manual valve 64 and 68 together opens the, further opening the automatic valve 76, the pressure is 10 - Continue evacuation until 3 Torr. Thereafter, the manual valves 64 and 68 and the automatic valve 76 are closed.

次に、レギュレータ６２を１５ＭＰａに設定し、マニュアルバルブ６４を開放して、水素貯蔵タンク１０に１５ＭＰａの水素ガスを導入する。この水素ガス導入に伴い、水素貯蔵タンク１０の温度は８℃上昇したが、３分後に２０℃に戻ったことが熱電対８２を介して確認された。   Next, the regulator 62 is set to 15 MPa, the manual valve 64 is opened, and 15 MPa hydrogen gas is introduced into the hydrogen storage tank 10. With the introduction of hydrogen gas, the temperature of the hydrogen storage tank 10 increased by 8 ° C., but it was confirmed via the thermocouple 82 that the temperature returned to 20 ° C. after 3 minutes.

その後、マニュアルバルブ６４を閉止して真空ポンプ６６を付勢し、自動バルブ７６を開放する。さらに、マニュアルバルブ６８を開放すれば、水素貯蔵タンク１０内の水素ガスが真空ポンプ６６の作用下に放出される。   Thereafter, the manual valve 64 is closed, the vacuum pump 66 is energized, and the automatic valve 76 is opened. Further, if the manual valve 68 is opened, the hydrogen gas in the hydrogen storage tank 10 is released under the action of the vacuum pump 66.

放出された水素ガスは、レギュレータ７０とニードルバルブ７２によって圧力が０．１ＭＰａまで低下してマスフローメータ７４に至る。このマスフローメータ７４を通過した水素ガスの積算流量を求める。積算流量の増加が認められなくなった時点で水素ガスがすべて放出されたものと判断し、マニュアルバルブ６８、自動バルブ７６を閉止して真空ポンプ６６を停止する。   The released hydrogen gas is reduced in pressure to 0.1 MPa by the regulator 70 and the needle valve 72 and reaches the mass flow meter 74. The integrated flow rate of hydrogen gas that has passed through the mass flow meter 74 is obtained. When the increase in the integrated flow rate is no longer recognized, it is determined that all the hydrogen gas has been released, the manual valve 68 and the automatic valve 76 are closed, and the vacuum pump 66 is stopped.

以上のようにして求められた水素ガス放出量は、２０℃において７３７７ｍｌであった。   The amount of hydrogen gas released determined as described above was 7377 ml at 20 ° C.

比較のため、水素貯蔵タンク１０に粉末状Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3を収容した。粉末状Ｚｎ4Ｏ（２，６−ナフタレンジカルボキシレートアニオン）3は嵩密度が大きく、このため、収容量は２５ｇであった。 For comparison, powdered Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 was accommodated in the hydrogen storage tank 10. Powdered Zn 4 O (2,6-naphthalenedicarboxylate anion) 3 has a large bulk density, and therefore the capacity was 25 g.

以降、上記の操作に準拠して、温度２０℃において、水素貯蔵タンク１０へ１５ＭＰａの水素ガスを充填したところ、水素貯蔵タンク１０の温度は１５℃上昇し、２０℃に戻るまでに７分を要した。   Thereafter, in accordance with the above operation, when the hydrogen storage tank 10 was filled with 15 MPa of hydrogen gas at a temperature of 20 ° C., the temperature of the hydrogen storage tank 10 increased by 15 ° C. It cost.

また、上記と同様に水素ガスを放出する操作を行ったところ、水素ガス放出量は、２０℃において６４１５ｍｌであった。   Further, when an operation for releasing hydrogen gas was performed in the same manner as described above, the amount of hydrogen gas released was 6415 ml at 20 ° C.

以上の結果から、成形体とすることにより粉末に比して多量の水素吸着材を収容することができ、結局、水素ガス充填量を大きくすることができること、また、高熱伝導率成分を成形体に含めるとともに水素貯蔵タンク１０に熱伝達部材を設けることで、水素貯蔵タンク１０の温度上昇が抑制可能となるとともに水素ガス充填前までの温度に戻る時間を短縮することができることが明らかである。   From the above results, it is possible to accommodate a large amount of hydrogen adsorbent as compared with powder by forming a molded body, eventually increasing the hydrogen gas filling amount, and forming a high thermal conductivity component into the molded body. It is apparent that by providing the heat storage member in the hydrogen storage tank 10 and the temperature increase in the hydrogen storage tank 10 can be suppressed, and the time for returning to the temperature before the hydrogen gas filling can be shortened.

本実施の形態に係る水素貯蔵タンクの全体概略斜視説明図である。It is a whole schematic perspective explanatory view of the hydrogen storage tank concerning this embodiment. 第１実施形態に係る水素吸着材成形体の要部概略縦断面図である。It is a principal part schematic longitudinal cross-sectional view of the hydrogen adsorbent molded object which concerns on 1st Embodiment. 第２実施形態に係る水素吸着材成形体の要部概略縦断面図である。It is a principal part schematic longitudinal cross-sectional view of the hydrogen adsorbent molded object which concerns on 2nd Embodiment. 第３実施形態に係る水素吸着材成形体の要部概略縦断面図である。It is a principal part schematic longitudinal cross-sectional view of the hydrogen adsorbent molded object which concerns on 3rd Embodiment. 図１の水素貯蔵タンクに収容された水素吸着材の水素ガス放出量を測定するための水素ガス貯蔵量測定システムを示すシステム概略構成図である。It is a system schematic block diagram which shows the hydrogen gas storage amount measuring system for measuring the hydrogen gas discharge | release amount of the hydrogen adsorbent accommodated in the hydrogen storage tank of FIG.

符号の説明Explanation of symbols

１０…水素貯蔵タンク １２…容器本体
１４…筒状フィルタ １６…蓋部材
１８…ディスク形状板 ２０…収容室
２４…中空円筒管 ２６…平板状部材
３２…水素供給口 ３６、３８、４０…水素吸着材成形体
４２…シート材 ４４…成形層
５２…水素ガス貯蔵量測定システム ６０…水素ガスボンベ
６６…真空ポンプ ７４…マスフローメータ
８２、８４…熱電対 DESCRIPTION OF SYMBOLS 10 ... Hydrogen storage tank 12 ... Container main body 14 ... Cylindrical filter 16 ... Lid member 18 ... Disc shaped plate 20 ... Storage chamber 24 ... Hollow cylindrical tube 26 ... Flat plate member 32 ... Hydrogen supply port 36, 38, 40 ... Hydrogen adsorption Formed material 42 ... Sheet material 44 ... Molded layer 52 ... Hydrogen gas storage amount measuring system 60 ... Hydrogen gas cylinder 66 ... Vacuum pump 74 ... Mass flow meters 82, 84 ... Thermocouple

Claims (2)

水素ガスを吸着ないし吸蔵する水素吸着材と、熱伝導率が前記水素吸着材に比して大きな高熱伝導率成分とを含む水素吸着材成形体を収容した水素貯蔵タンクであって、
当該水素貯蔵タンクの内壁と前記水素吸着材成形体との間に介在され、前記内壁及び前記水素吸着材成形体に当接して前記水素吸着材成形体からの熱を前記内壁に伝達するための熱伝達部材を有し、
前記水素吸着材成形体として、第１の成形体と、前記第１の成形体に比して外寸が小さい第２の成形体とを、前記第２の成形体が前記第１の成形体同士の間に進入した状態で収容したことを特徴とする水素貯蔵タンク。 A hydrogen storage tank containing a hydrogen adsorbent molded body containing a hydrogen adsorbent that adsorbs or occludes hydrogen gas and a high thermal conductivity component having a thermal conductivity larger than that of the hydrogen adsorbent,
Interposed between the inner wall of the hydrogen storage tank and the hydrogen adsorbent molded body, abutting on the inner wall and the hydrogen adsorbent molded body, for transferring heat from the hydrogen adsorbent molded body to the inner wall Having a heat transfer member,
As the hydrogen adsorbent molded body, a first molded body and a second molded body having an outer dimension smaller than that of the first molded body, and the second molded body are the first molded body. A hydrogen storage tank characterized in that it is housed in a state of entering between them. 請求項１記載の水素貯蔵タンクにおいて、前記水素吸着材成形体を冷却する冷却媒体が流通するための管体をさらに有することを特徴とする水素貯蔵タンク。 2. The hydrogen storage tank according to claim 1, further comprising a tubular body through which a cooling medium for cooling the hydrogen adsorbent molded body flows.
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