JP7147612B2 - Chemical heat storage reactor and chemical heat storage device - Google Patents

Chemical heat storage reactor and chemical heat storage device Download PDF

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JP7147612B2
JP7147612B2 JP2019024418A JP2019024418A JP7147612B2 JP 7147612 B2 JP7147612 B2 JP 7147612B2 JP 2019024418 A JP2019024418 A JP 2019024418A JP 2019024418 A JP2019024418 A JP 2019024418A JP 7147612 B2 JP7147612 B2 JP 7147612B2
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heat storage
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JP2020133938A (en
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美代 望月
忠伸 植田
崇史 山内
真彦 山下
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Toyota Central R&D Labs Inc
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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
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本発明は、化学蓄熱反応器、および、化学蓄熱装置に関する。 The present invention relates to chemical heat storage reactors and chemical heat storage devices.

従来、反応媒体との化学反応によって放熱と蓄熱とを繰り返すことが可能な蓄熱体を備える化学蓄熱反応器が知られている。例えば、特許文献１には、柱状の第１の蓄熱体と、第１の蓄熱体の鉛直方向下方に配置され、第１の蓄熱体より蓄熱温度が低く、かつ、第１の蓄熱体より反応速度が速い柱状の第２の蓄熱体と、第１の蓄熱体と第２の蓄熱体に隣接して配置され、反応媒体が流れる媒体流路と、を備える構成において、反応媒体は、第２の蓄熱体の沿って流れた後、第１の蓄熱体に沿って流れる技術が開示されている。 BACKGROUND ART Conventionally, a chemical heat storage reactor is known which includes a heat storage medium capable of repeating heat release and heat storage through a chemical reaction with a reaction medium. For example, in Patent Document 1, a columnar first heat storage element is arranged vertically below the first heat storage element, the heat storage temperature is lower than the first heat storage element, and the reaction rate is higher than that of the first heat storage element. In a configuration including a columnar second heat storage element having a high velocity and a medium flow path arranged adjacent to the first heat storage element and the second heat storage element and through which the reaction medium flows, the reaction medium A technique of flowing along the first heat storage after flowing along the first heat storage is disclosed.

特開２０１７－２１８４９２号公報JP 2017-218492 A

特許文献１に記載の化学蓄熱反応器では、放熱するとき、最初に、反応媒体の流れの上流側に位置する第２の蓄熱体を用いて比較的低温の反応媒体を加熱する。その後、第２の蓄熱体によって加熱された反応媒体と第１の蓄熱体の反応によって、外部に放出する熱を発生する。しかしながら、特許文献１に記載の化学蓄熱反応器では、第１の蓄熱体と、第２の蓄熱体との割合は、一定で固定されているため、例えば、反応媒体の流量が多くなると、第１の蓄熱体と十分に加熱されていない反応媒体とが反応することとなり、十分な発熱がおこなえないおそれがある。 In the chemical heat storage reactor described in Patent Document 1, when dissipating heat, first, a relatively low-temperature reaction medium is heated using a second heat storage body positioned upstream of the flow of the reaction medium. After that, the reaction medium heated by the second heat storage element reacts with the first heat storage element to generate heat to be released to the outside. However, in the chemical heat storage reactor described in Patent Document 1, the ratio between the first heat storage medium and the second heat storage medium is fixed at a constant rate. There is a risk that the heat storage material of 1 will react with the reaction medium that is not sufficiently heated, resulting in insufficient heat generation.

また、特許文献１に記載の化学蓄熱反応器の構成において、下流側の第１の蓄熱体と上流側の第２の蓄熱体とを、水との反応によって放熱と蓄熱を繰り返すカルシウム化合物から形成した場合、第２の蓄熱体によって液体状の水（以下、「反応水」という）を加熱し、第１の蓄熱体と反応する蒸気とする方法が考えられる。しかしながら、反応水の流量によって反応水が全て蒸気にならない場合、第１の蓄熱体に反応水がかかるため、第１の蓄熱体の温度が低下し、高温の熱を発生することができない。また、反応水がかかった部分とそうでない部分との、蓄熱体の膨張の度合いが異なり、蓄熱体全体が均一に膨張しないため、蓄熱体が破損するおそれがある。 In addition, in the configuration of the chemical heat storage reactor described in Patent Document 1, the first heat storage element on the downstream side and the second heat storage element on the upstream side are formed from a calcium compound that repeats heat release and heat storage by reaction with water. In such a case, a method of heating liquid water (hereinafter referred to as "reaction water") by the second heat storage medium and converting it into steam that reacts with the first heat storage medium can be considered. However, if the flow rate of the reaction water does not allow all of the reaction water to become steam, the reaction water is splashed over the first heat storage body, so the temperature of the first heat storage body drops and high-temperature heat cannot be generated. In addition, the degree of expansion of the heat storage body is different between the portion where the reaction water is applied and the portion where it is not, and the heat storage body as a whole does not expand uniformly, so there is a risk of damage to the heat storage body.

本発明は、上述した課題を解決するためになされたものであり、化学蓄熱反応器において、出力温度を高温にする技術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 an object of the present invention is to provide a technique for increasing the output temperature of a chemical heat storage reactor.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態として実現することが可能である。 The present invention has been made to solve at least part of the above problems, and can be implemented as the following modes.

（１）本発明の一形態によれば、化学蓄熱反応器が提供される。この化学蓄熱反応器は、水を加熱して蒸気を生成するための第１の蓄熱体と、生成された蒸気が供給され熱を発生させるための第２の蓄熱体と、前記第１の蓄熱体に隣接して配置され、前記第１の蓄熱体に沿って水を流通可能な第１の流路であって、前記第１の流路を流れる水を前記第１の蓄熱体に供給するとともに、前記第１の蓄熱体が発生する熱によって前記第１の流路を流れる水を加熱する前記第１の流路と、前記第１の蓄熱体に隣接して配置され、前記第１の流路で加熱された水を前記第１の蓄熱体に沿って流通可能な第２の流路であって、前記第１の蓄熱体が発生する熱によって前記第２の流路を流れる水をさらに加熱し蒸気を生成させる前記第２の流路と、前記第２の流路で生成された蒸気が流通可能に形成され、蒸気を前記第２の蓄熱体に供給する第３の流路と、前記第１の流路と前記第２の流路との間に設けられ、前記第１の流路から流入してきた水の流通方向を折り返して、前記第２の流路に供給する折り返し流路と、を備える。 (1) According to one aspect of the present invention, a chemical heat storage reactor is provided. This chemical heat storage reactor includes a first heat storage medium for heating water to generate steam, a second heat storage medium for supplying the generated steam to generate heat, and the first heat storage medium. a first flow path disposed adjacent to the body and allowing water to flow along the first heat storage body, wherein the water flowing through the first flow path is supplied to the first heat storage body together with the first flow path for heating water flowing through the first flow path by heat generated by the first heat storage element; a second flow path through which water heated in the flow path can flow along the first heat storage material, wherein the heat generated by the first heat storage material causes the water flowing through the second flow path to flow through the second flow path; The second flow path for further heating to generate steam, and the third flow path through which the steam generated in the second flow path can flow and which supplies the steam to the second heat storage element. a return flow provided between the first flow channel and the second flow channel to turn back the flow direction of the water flowing in from the first flow channel and supply the water to the second flow channel; Provide roads and

この構成によれば、第１の蓄熱体に隣接して配置されている第１の流路と第２の流路との間には、第１の流路から流入してきた水の流通方向を折り返して第２の流路に供給する折り返し流路が設けられている。これにより、第１の蓄熱体が発生する熱によって水が十分に加熱され蒸気になりやすくなるため、生成された蒸気が供給され熱を発生させるための第２の蓄熱体に、加熱が不十分で蒸気とならなかった水がかかることを抑制できる。したがって、水の付着による第２の蓄熱体の温度低下を抑制し、化学蓄熱反応器の出力温度を比較的高温にすることができる。 According to this configuration, between the first flow path and the second flow path arranged adjacent to the first heat storage element, the flow direction of the water flowing from the first flow path is A turn-back flow path is provided for turning back and supplying to the second flow path. As a result, the water is sufficiently heated by the heat generated by the first heat storage medium and easily becomes steam, so that the generated steam is supplied to the second heat storage medium for generating heat. It is possible to suppress the splashing of water that did not turn into steam. Therefore, it is possible to suppress the temperature drop of the second heat storage element due to the adhesion of water, and make the output temperature of the chemical heat storage reactor relatively high.

（２）上記形態の化学蓄熱反応器において、前記第２の流路は、前記折り返し流路に接続する入口と、前記第３の流路に接続する出口とを備え、前記折り返し流路が前記第２の流路の鉛直方向下方に位置しているとき、前記出口は、前記入口より高い位置にあってもよい。
この構成によれば、第２の流路で生成される蒸気は、密度が比較的小さいため、入口より高い位置にある出口に向かって移動する。これにより、第２の流路の出口からは蒸気のみが排出されるため、第２の流路に接続する第３の流路には、蒸気のみが流れることとなる。したがって、第２の蓄熱体に水がかかることを抑制することができるため、化学蓄熱反応器の出力温度を比較的高温にすることができる。 (2) In the chemical heat storage reactor of the above aspect, the second flow path has an inlet connected to the folded flow path and an outlet connected to the third flow path, and the turned flow path is the When positioned vertically below the second channel, the outlet may be higher than the inlet.
With this arrangement, the vapor produced in the second flow path has a relatively low density and therefore moves toward the outlet, which is higher than the inlet. As a result, only steam is discharged from the outlet of the second flow path, so that only steam flows through the third flow path connected to the second flow path. Therefore, it is possible to prevent the second heat storage element from being exposed to water, so that the output temperature of the chemical heat storage reactor can be set to a relatively high temperature.

（３）上記形態の化学蓄熱反応器において、前記第１の蓄熱体は、水と結合させると発熱する第１の蓄熱材と、前記第１の蓄熱材の外面を覆う円筒形状の第１の蓄熱材拘束カバーと、を備え、前記第２の蓄熱体は、水と結合させると発熱する第２の蓄熱材と、前記第２の蓄熱材の外面を覆う円筒形状の第２の蓄熱材拘束カバーと、を備え、前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとは、それぞれ水が流通可能な孔を有し、互いに隣接して接合されており、前記第１の流路は、前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとの間に形成され、前記第１の蓄熱材拘束カバーのうち前記孔を有している部分と、前記第２の蓄熱材拘束カバーのうち前記孔を有していない部分に面しており、前記第２の流路は、前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとの間に形成され、前記第１の蓄熱材拘束カバーのうち前記孔を有していない部分と、前記第２の蓄熱材拘束カバーのうち前記孔を有していない部分に面しており、前記第３の流路は、前記第２の蓄熱材拘束カバーのうち前記孔を有している部分に面していてもよい。 (3) In the chemical heat storage reactor of the above aspect, the first heat storage material includes a first heat storage material that generates heat when combined with water, and a cylindrical first heat storage material that covers the outer surface of the first heat storage material. a heat storage material restraining cover, wherein the second heat storage material includes a second heat storage material that generates heat when combined with water; and a cylindrical second heat storage material restraining cover that covers an outer surface of the second heat storage material. a cover, wherein the first heat storage material restricting cover and the second heat storage material restricting cover each have a hole through which water can flow, and are joined adjacent to each other; The flow path is formed between the first heat storage material restricting cover and the second heat storage material restricting cover, and includes a portion of the first heat storage material restricting cover having the hole, and a portion of the first heat storage material restricting cover having the hole. 2 of the heat storage material restricting cover, the second flow path faces the portion not having the hole, and the second flow path is formed between the first heat storage material restricting cover and the second heat storage material restricting cover. facing the portion of the first heat storage material restraint cover that does not have the hole and the portion of the second heat storage material restraint cover that does not have the hole, The flow path 3 may face the portion of the second heat storage material restricting cover that has the hole.

この構成によれば、第１の蓄熱材拘束カバー内の第１の蓄熱材は、第１の流路を流れる液体状の水によって発熱する。一方、第２の蓄熱材拘束カバー内の第２の蓄熱材は、第３の流路を流れる蒸気によって発熱する。また、蒸気が生成される第２の流路は、第１の蓄熱材拘束カバーの孔を有していない部分と第２の蓄熱材拘束カバーの孔を有していない部分に面しているため、第２の流路を流れる、液体状の水と蒸気とが混在する混合流体によって、第１の蓄熱材および第２の蓄熱材が発熱することはない。このように、第１の蓄熱体を発熱させる水と、第２の蓄熱体を発熱させる蒸気とは、第２の流路を挟んで、第１の流路と第３の流路とのそれぞれにおいて流れるため、第２の蓄熱体に水がかかることを抑制することができる。これにより、化学蓄熱反応器の出力温度を比較的高温にすることができる。 According to this configuration, the first heat storage material in the first heat storage material restricting cover generates heat by the liquid water flowing through the first flow path. On the other hand, the second heat storage material in the second heat storage material restricting cover generates heat by the steam flowing through the third flow path. In addition, the second flow path in which steam is generated faces the portion of the first heat storage material restricting cover having no holes and the portion of the second heat storage material restricting cover having no holes. Therefore, the first heat storage material and the second heat storage material do not generate heat due to the mixed fluid of liquid water and steam flowing through the second flow path. Thus, the water that causes the first heat storage element to generate heat and the steam that causes the second heat storage element to generate heat are separated from each other in the first flow path and the third flow path with the second flow path interposed therebetween. Therefore, it is possible to suppress water from splashing on the second heat storage element. This allows the output temperature of the chemical heat storage reactor to be relatively high.

（４）上記形態の化学蓄熱反応器は、さらに、前記第１の蓄熱体と前記第２の蓄熱体とが内部に配置されているケースを備え、前記第３の流路は、前記ケースの内壁に隣接している前記第２の蓄熱体と前記内壁との間に形成されてもよい。
この構成によれば、第３の流路は、第２の蓄熱体とケースの内壁との間に形成されるため、第３の流路を流れる蒸気は、第２の蓄熱体のケースの内壁側から第２の蓄熱体と結合する。これにより、蒸気との結合によって発生する熱は、第２の蓄熱体のケースの内壁側から先に発生するため、発生した熱は、速やかに隣接している反応容器に伝わり、外部に放出される。したがって、化学蓄熱反応器の出力温度を比較的高温にすることができるとともに、放熱速度を向上することができる。 (4) The chemical heat storage reactor of the above aspect further includes a case in which the first heat storage element and the second heat storage element are arranged, and the third flow path is provided in the case. It may be formed between the second heat reservoir adjacent to the inner wall and the inner wall.
According to this configuration, since the third flow path is formed between the second heat storage body and the inner wall of the case, the steam flowing through the third flow path flows through the inner wall of the case of the second heat storage body. It joins with the second heat store from the side. As a result, the heat generated by the combination with the steam is first generated from the inner wall side of the case of the second heat storage body, so the generated heat is quickly transmitted to the adjacent reaction vessel and released to the outside. be. Therefore, the output temperature of the chemical heat storage reactor can be made relatively high, and the heat dissipation rate can be improved.

（５）上記形態の化学蓄熱反応器は、さらに、複数の前記第１の流路に接続する入口マニホールドと、前記入口マニホールド内に配置され、前記複数の第１の流路のそれぞれに供給される水を整流する整流板と、を備えてもよい。
この構成によれば、整流板は、複数の第１の流路に水を流すとき、複数の第１の流路のそれぞれで水が流れるように水を適度に分散させる。これにより、複数の第１の流路のそれぞれにおいて水を効率的に加熱することができる。 (5) The chemical heat storage reactor of the above aspect further includes an inlet manifold connected to the plurality of first flow paths, and an inlet manifold disposed in the inlet manifold and supplied to each of the plurality of first flow paths. and a straightening plate for straightening the water.
According to this configuration, when water is allowed to flow through the plurality of first flow paths, the rectifying plate appropriately distributes the water so that the water flows through each of the plurality of first flow paths. Thereby, water can be efficiently heated in each of the plurality of first flow paths.

（６）本発明の一形態によれば、化学蓄熱装置が提供される。この化学蓄熱装置は、上記形態の化学蓄熱反応器と、前記化学蓄熱反応器の鉛直方向上方に配置され、水を前記第１の流路に供給する水タンクと、を備える。
この構成によれば、水タンクは、重力の作用を使って水を第１の流路に流すことができる。これにより、第１の流路にスムーズに水を供給することができる。 (6) According to one aspect of the present invention, a chemical heat storage device is provided. This chemical heat storage device includes the chemical heat storage reactor having the above configuration, and a water tank arranged vertically above the chemical heat storage reactor and supplying water to the first flow path.
According to this configuration, the water tank can use the action of gravity to cause water to flow into the first flow path. Thereby, water can be smoothly supplied to the first channel.

第１実施形態の化学蓄熱反応器を備える化学蓄熱装置の模式図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of a chemical thermal storage device provided with the chemical thermal storage reactor of 1st Embodiment. 図１のＡ－Ａ線断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; 図２のＢ－Ｂ線断面図である。FIG. 3 is a cross-sectional view taken along line BB of FIG. 2; 図２のＣ－Ｃ線断面図である。FIG. 3 is a cross-sectional view taken along line CC of FIG. 2; 図２のＤ－Ｄ線断面図である。FIG. 3 is a cross-sectional view taken along line DD of FIG. 2; 図２のＥ－Ｅ線断面図である。3 is a cross-sectional view taken along line EE of FIG. 2; FIG. 第１実施形態の化学蓄熱反応器の作用を説明する説明図である。It is an explanatory view explaining an operation of a chemico-thermal-storage reactor of a 1st embodiment. 第２実施形態の化学蓄熱反応器の断面図である。It is a cross-sectional view of a chemical heat storage reactor of a second embodiment. 第２実施形態の化学蓄熱反応器の作用を説明する説明図である。It is an explanatory view explaining an operation of a chemical heat storage reactor of a 2nd embodiment. 第２実施形態の化学蓄熱反応器の作用を説明する説明図である。It is an explanatory view explaining an operation of a chemical heat storage reactor of a 2nd embodiment. 第２実施形態の化学蓄熱反応器の作用を説明する説明図である。It is an explanatory view explaining an operation of a chemical heat storage reactor of a 2nd embodiment. 第３実施形態の化学蓄熱反応器の断面図である。It is a cross-sectional view of a chemical heat storage reactor of a third embodiment. 第４実施形態の化学蓄熱反応器の断面図である。It is a sectional view of a chemico-thermal-storage reactor of a 4th embodiment.

＜第１実施形態＞
図１は、第１実施形態の化学蓄熱反応器１を備える化学蓄熱装置８の模式図である。図２は、図１のＡ－Ａ線断面図である。図３は、図２のＢ－Ｂ線断面図である。図４は、図２のＣ－Ｃ線断面図である。図５は、図２のＤ－Ｄ線断面図である。図６は、図２のＥ－Ｅ線断面図である。図７は、本実施形態の化学蓄熱装置８の作用を説明する説明図である。なお、図１～図６中に示す矢印ｘは、水平方向を示し、矢印ｙは、水平方向であって矢印ｘが示す方向に対して垂直な方向を示し、矢印ｚは、鉛直方向を示す。また、図１～図６中には、矢印ｘの方向に平行な方向のｘ軸と、矢印ｙの方向に平行な方向のｙ軸と、矢印ｚの方向に平行な方向のｚ軸とを示す。 <First embodiment>
FIG. 1 is a schematic diagram of a chemical heat storage device 8 including the chemical heat storage reactor 1 of the first embodiment. FIG. 2 is a cross-sectional view taken along line AA of FIG. 3 is a cross-sectional view taken along line BB of FIG. 2. FIG. 4 is a cross-sectional view taken along line CC of FIG. 2. FIG. FIG. 5 is a cross-sectional view taken along line DD of FIG. 6 is a cross-sectional view taken along line EE of FIG. 2. FIG. FIG. 7 is an explanatory diagram illustrating the action of the chemical heat storage device 8 of this embodiment. 1 to 6 indicates the horizontal direction, the arrow y indicates the horizontal direction perpendicular to the direction indicated by the arrow x, and the arrow z indicates the vertical direction. . 1 to 6, the x-axis parallel to the direction of the arrow x, the y-axis parallel to the direction of the arrow y, and the z-axis parallel to the direction of the arrow z are shown. show.

化学蓄熱装置８は、図１に示すように、化学蓄熱反応器１と、水タンク３６とを備える。化学蓄熱装置８は、水との反応によって、発熱と蓄熱とを繰り返すことが可能である。なお、図１は、後述するバルブ３６ａを削除した図を示している。 The chemical heat storage device 8 includes a chemical heat storage reactor 1 and a water tank 36, as shown in FIG. The chemical heat storage device 8 can repeat heat generation and heat storage by reaction with water. Note that FIG. 1 shows a diagram in which a valve 36a, which will be described later, is omitted.

化学蓄熱反応器１は、図２に示すように、複数の蓄熱体５と、反応容器３１とを備える。蓄熱体５は、水と結合することで発熱するものであって、本実施形態では、１４本の蓄熱体５を備える。蓄熱体５のそれぞれは、蓄熱材１０と、蓄熱材拘束カバー２０とを備える。 The chemical heat storage reactor 1 includes a plurality of heat storage bodies 5 and a reaction vessel 31, as shown in FIG. The heat storage bodies 5 generate heat by being combined with water, and are provided with 14 heat storage bodies 5 in this embodiment. Each of the heat storage bodies 5 includes a heat storage material 10 and a heat storage material restraining cover 20 .

蓄熱材１０は、例えば、アルカリ土類金属の酸化物の一つである酸化カルシウムの成形体である。蓄熱材１０は、酸化カルシウムの粒状物を、例えば、粘土鉱物などのバインダと混練し焼成することで所定の形状となるように成形されている。本実施形態では、蓄熱材１０は、円柱状に形成されている。蓄熱材１０は、式（１）に示す水和反応によって発熱し、式（２）に示す脱水反応によって蓄熱するものであり、発熱と蓄熱とを可逆的に繰り返すことが可能である。
ＣａＯ ＋ Ｈ2Ｏ →Ｃａ（ＯＨ）2 ＋Ｑ1 ・・・（１）
Ｃａ（ＯＨ）2 ＋Ｑ2 →ＣａＯ ＋ Ｈ2Ｏ ・・・（２）
なお、式（１）のＱ1は、水和反応における発熱量を示し、式（２）のＱ2は、脱水反応における蓄熱量を示す。 The heat storage material 10 is, for example, a compact of calcium oxide, which is one of oxides of alkaline earth metals. The heat storage material 10 is molded into a predetermined shape by kneading and firing granular calcium oxide with a binder such as a clay mineral, for example. In this embodiment, the heat storage material 10 is formed in a cylindrical shape. The heat storage material 10 generates heat by the hydration reaction shown in formula (1) and stores heat by the dehydration reaction shown in formula (2), and can reversibly repeat heat generation and heat storage.
CaO+ H2O->Ca(OH)2 + Q1 ( 1 )
Ca(OH) 2 +Q2->CaO+ H2O ( 2 )
Q 1 in formula (1) indicates the amount of heat generated in the hydration reaction, and Q 2 in formula (2) indicates the amount of heat stored in the dehydration reaction.

本実施形態では、化学蓄熱反応器１は、１４個の蓄熱材１０を備える。１４個の蓄熱材１０のうち、ｘ軸方向に４個並べられている蓄熱材１０を、ここでは、蒸気用蓄熱材１１という。蒸気用蓄熱材１１は、液体状の水（以下、「反応水」という）との結合によって反応水から蒸気を生成させるための熱を発生する。
また、１４個の蓄熱材１０のうち、蒸気用蓄熱材１１を除く１０個の蓄熱材１０を、放熱用蓄熱材１２という。放熱用蓄熱材１２は、蒸気との結合によって、化学蓄熱反応器１の外部に放出する熱を発生する。本実施形態では、１０個の放熱用蓄熱材１２は、図２に示すように、ｘ軸方向に５個ずつ並べられ、ｘ軸方向に４個並べられている蒸気用蓄熱材１１に対して、ｙ軸のプラス側と、マイナス側とのそれぞれに配置されている。 In this embodiment, the chemical heat storage reactor 1 includes 14 heat storage materials 10 . Of the 14 heat storage materials 10, four heat storage materials 10 arranged in the x-axis direction are referred to as steam heat storage materials 11 here. The steam heat storage material 11 combines with liquid water (hereinafter referred to as “reaction water”) to generate heat for generating steam from the reaction water.
Among the 14 heat storage materials 10, 10 heat storage materials 10 other than the steam heat storage material 11 are referred to as heat radiation heat storage materials 12. As shown in FIG. The heat radiating heat storage material 12 generates heat to be released to the outside of the chemical heat storage reactor 1 by combining with steam. In this embodiment, as shown in FIG. 2, the ten heat radiating heat storage materials 12 are arranged five by five in the x-axis direction. , on the plus side and the minus side of the y-axis.

蓄熱材拘束カバー２０は、円筒形状の部材であって、蓄熱材１０の外面を覆うように形成されている。蓄熱材拘束カバー２０は、４個の蒸気用蓄熱材１１と１０個の放熱用蓄熱材１２とのそれぞれを覆う。ここで、蒸気用蓄熱材１１の外面を覆うように形成されている蓄熱材拘束カバー２０を、蒸気用蓄熱材拘束カバー２６という。また、放熱用蓄熱材１２の外面を覆うように形成されている蓄熱材拘束カバー２０を、放熱用蓄熱材拘束カバー２７という。 The heat storage material restricting cover 20 is a cylindrical member formed to cover the outer surface of the heat storage material 10 . The heat storage material restricting cover 20 covers each of the four steam heat storage materials 11 and the ten heat radiation heat storage materials 12 . Here, the heat storage material restricting cover 20 formed to cover the outer surface of the steam heat storage material 11 is referred to as a steam heat storage material restricting cover 26 . Further, the heat storage material restricting cover 20 formed so as to cover the outer surface of the heat storage material 12 for heat radiation is referred to as a heat storage material restricting cover 27 for heat radiation.

蒸気用蓄熱材拘束カバー２６は、例えば、エッチングフィルターなどの、一部がメッシュ状となっているシート状の部材を円筒状に加工し、蒸気用蓄熱材１１の径外方向の外面を覆うように形成されている。蒸気用蓄熱材拘束カバー２６は、径方向の外壁の一部に、蒸気用蓄熱材１１を構成する粒状物の平均粒径より小さい貫通孔２６ａを有している（図２参照）。貫通孔２６ａは、蒸気用蓄熱材１１を構成する粒状物の通過を制限する一方、反応水の通過を許容する。本実施形態では、貫通孔２６ａは、図３に示すように、蒸気用蓄熱材拘束カバー２６の軸心Ａ２６の方向に連続して、蒸気用蓄熱材拘束カバー２６の一端から他端まで形成されている。蒸気用蓄熱材拘束カバー２６は、貫通孔２６ａを除いて、蒸気用蓄熱材拘束カバー２６内の気密が保たれている。なお、本実施形態では、蒸気用蓄熱材拘束カバー２６は、円筒形状に形成されているが、断面が矩形の筒状や他の形状であってもよい。 The steam heat storage material restricting cover 26 is formed by processing a sheet-like member, such as an etching filter, part of which has a mesh shape, into a cylindrical shape so as to cover the outer surface of the steam heat storage material 11 in the radially outer direction. is formed in The steam heat storage material restricting cover 26 has a through hole 26a, which is smaller than the average particle size of the particles constituting the steam heat storage material 11, in a portion of the outer wall in the radial direction (see FIG. 2). The through-holes 26a restrict the passage of the particulate matter forming the steam heat storage material 11, while permitting the passage of reaction water. In this embodiment, as shown in FIG. 3, the through hole 26a is formed continuously in the direction of the axis A26 of the steam heat storage material restricting cover 26 from one end to the other end of the steam heat storage material restricting cover 26. ing. The steam heat storage material restricting cover 26 is kept airtight in the steam heat storage material restricting cover 26 except for the through holes 26a. In this embodiment, the steam heat storage material restricting cover 26 is formed in a cylindrical shape, but it may be in a cylindrical shape with a rectangular cross section or other shape.

放熱用蓄熱材拘束カバー２７は、例えば、エッチングフィルターなどの、一部がメッシュ状となっているシート状の部材を円筒形状に加工し、放熱用蓄熱材１２の径外方向の外面を覆うように形成されている。放熱用蓄熱材拘束カバー２７は、径方向の外壁の一部に、放熱用蓄熱材１２を構成する粒状物の平均粒径より小さい貫通孔２７ａを有している（図２参照）。貫通孔２７ａは、放熱用蓄熱材１２を構成する粒状物の通過を制限する一方、蒸気の通過を許容する。本実施形態では、貫通孔２７ａは、図４に示すように、放熱用蓄熱材拘束カバー２７の軸心Ａ２７の方向に連続して、放熱用蓄熱材拘束カバー２７の一端から他端まで形成されている。放熱用蓄熱材拘束カバー２７は、貫通孔２７ａを除いて、放熱用蓄熱材拘束カバー２７内の気密が保たれている。なお、本実施形態では、放熱用蓄熱材拘束カバー２７は、円筒形状に形成されているが、断面が矩形の筒状や他の形状であってもよい。 The radiating heat storage material restricting cover 27 is formed by processing a sheet member, such as an etching filter, which is partly meshed, into a cylindrical shape so as to cover the outer surface of the radiating heat storage material 12 in the radially outer direction. is formed in The radiating heat storage material restricting cover 27 has a through hole 27a in a part of the outer wall in the radial direction, which is smaller than the average particle size of the particles forming the radiating heat storage material 12 (see FIG. 2). The through-holes 27a restrict the passage of the particulate matter forming the heat storage material 12 for heat dissipation, while permitting the passage of steam. In this embodiment, as shown in FIG. 4, the through hole 27a is formed continuously in the direction of the axis A27 of the heat radiating heat storage material restricting cover 27 from one end to the other end of the heat radiating heat storage material restricting cover 27. ing. The inside of the heat radiating heat storage material restricting cover 27 is kept airtight except for the through holes 27a. In this embodiment, the heat radiating heat storage material restricting cover 27 is formed in a cylindrical shape, but it may be in a cylindrical shape with a rectangular cross section or other shape.

蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７とは、図２に示すように、それぞれの軸心Ａ２６、Ａ２７が略平行となるように配置されている。蒸気用蓄熱材拘束カバー２６および放熱用蓄熱材拘束カバー２７は、径方向の外壁が、自身と隣り合う蒸気用蓄熱材拘束カバー２６および放熱用蓄熱材拘束カバー２７の径方向の外壁と、ろう付や溶接などによって接合されている。これにより、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７との間の複数の隙間は、それぞれ気密が保たれている。 As shown in FIG. 2, the steam heat storage material restricting cover 26 and the heat radiating heat storage material restricting cover 27 are arranged such that their axes A26 and A27 are substantially parallel to each other. The steam heat storage material constraining cover 26 and the heat radiating heat storage material constraining cover 27 are arranged so that the radial outer walls of the steam heat storage material constraining cover 26 and the heat radiating heat storage material constraining cover 27 adjacent to each other overlap with each other. It is joined by gluing or welding. As a result, a plurality of gaps between the vapor heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 are kept airtight.

反応容器３１は、図２に示すように、互いに接合されて束となっている蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を内部に収容するとともに、後述する水タンク３６に接続されている。反応容器３１は、収容部３１ａと、上側マニホールド３１ｂと、下側マニホールド３１ｃと、接続流路３１ｄとを備える。 As shown in FIG. 2, the reaction vessel 31 accommodates therein the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 that are joined together to form a bundle, and is connected to a water tank 36, which will be described later. It is The reaction container 31 includes an accommodating portion 31a, an upper manifold 31b, a lower manifold 31c, and a connection channel 31d.

収容部３１ａは、内部に空間が形成されている直方体状のケースであって、該空間に、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を収容している。本実施形態では、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７は、それぞれの軸心Ａ２６、Ａ２７が鉛直方向に沿った状態で収容されている。本実施形態では、収容部３１ａの内壁には、放熱用蓄熱材拘束カバー２７が隣接している。 The accommodating portion 31a is a rectangular parallelepiped case having a space formed therein, and accommodates the vapor heat storage material restricting cover 26 and the heat radiating heat storage material restricting cover 27 in the space. In this embodiment, the steam heat storage material restricting cover 26 and the heat radiating heat storage material restricting cover 27 are housed with their axes A26 and A27 extending in the vertical direction. In the present embodiment, the heat radiating heat storage material restricting cover 27 is adjacent to the inner wall of the accommodating portion 31a.

上側マニホールド３１ｂは、収容部３１ａのｚ軸のプラス側、すなわち、収容部３１ａの鉛直方向上側に位置している部位である。上側マニホールド３１ｂには、収容部３１ａ内と連通している空間が形成されている。上側マニホールド３１ｂは、水タンク３６に接続している接続流路３１ｄと、鉛直方向上側で接続しており、接続流路３１ｄを流れる反応水を、収容部３１ａに供給する。上側マニホールド３１ｂ内には、反応水を適度に分散させる整流板３１ｅが配置されている（図３、４参照）。 The upper manifold 31b is a portion located on the positive side of the z-axis of the accommodating portion 31a, that is, on the upper side of the accommodating portion 31a in the vertical direction. A space communicating with the inside of the housing portion 31a is formed in the upper manifold 31b. The upper manifold 31b is connected vertically upward to a connection channel 31d connected to the water tank 36, and supplies reaction water flowing through the connection channel 31d to the storage portion 31a. In the upper manifold 31b, a rectifying plate 31e for appropriately dispersing reaction water is arranged (see FIGS. 3 and 4).

下側マニホールド３１ｃは、収容部３１ａのｚ軸のマイナス側、すなわち、収容部３１ａの鉛直方向下側に位置している部位である。下側マニホールド３１ｃには、収容部３１ａ内と連通している空間が形成されている。 The lower manifold 31c is a portion positioned on the minus side of the z-axis of the accommodating portion 31a, that is, on the lower side of the accommodating portion 31a in the vertical direction. A space communicating with the inside of the housing portion 31a is formed in the lower manifold 31c.

水タンク３６は、反応容器３１の鉛直方向上方に位置している。水タンク３６は、上側マニホールド３１ｂを介して、収容部３１ａ内に供給される反応水を貯留している。水タンク３６内の反応水は、接続流路３１ｄに設けられているバルブ３６ａの開閉によって、上側マニホールド３１ｂ内への供給が制御される。 The water tank 36 is positioned vertically above the reaction vessel 31 . The water tank 36 stores reaction water to be supplied into the storage section 31a via the upper manifold 31b. The reaction water in the water tank 36 is controlled to be supplied to the upper manifold 31b by opening and closing the valve 36a provided in the connection channel 31d.

本実施形態の化学蓄熱反応器１には、反応容器３１内の蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７とによって、反応水または蒸気が流通可能な複数の流路が形成されている。
第１の流路２１は、図２に示すように、互いに接合されている２個の蒸気用蓄熱材拘束カバー２６と、該接合されている２個の蒸気用蓄熱材拘束カバー２６に接合されている１個の放熱用蓄熱材拘束カバー２７とによって形成されている。具体的には、第１の流路２１は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを有している部分と、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを有していない部分に面している。第１の流路２１は、図３および図４に示すように、上側マニホールド３１ｂの内部と、下側マニホールド３１ｃの内部とに連通している。 In the chemical heat storage reactor 1 of the present embodiment, a plurality of flow paths through which reaction water or steam can flow are formed by the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 in the reaction vessel 31. ing.
As shown in FIG. 2, the first flow path 21 is joined to two steam heat storage material restricting covers 26 that are joined to each other and to the two steam heat storage material restricting covers 26 that are joined to each other. It is formed by one heat radiating heat storage material restricting cover 27 that is connected to the heat radiating heat storage material restraint cover 27 . Specifically, the first flow path 21 is divided into a portion of the steam heat storage material restricting cover 26 having the through hole 26a and a portion of the heat radiating heat storage material restricting cover 27 not having the through hole 27a. facing. As shown in FIGS. 3 and 4, the first flow path 21 communicates with the inside of the upper manifold 31b and the inside of the lower manifold 31c.

第２の流路２２は、図２に示すように、１個の蒸気用蓄熱材拘束カバー２６と、該１個の蒸気用蓄熱材拘束カバー２６に接合されている２個の放熱用蓄熱材拘束カバー２７とによって形成されている。具体的には、第２の流路２２は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを有していない部分と、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを有していない部分に面している。第２の流路２２は、図５および図６に示すように、下側マニホールド３１ｃの内部に連通している。これにより、下側マニホールド３１ｃ内は、第１の流路２１から流入してきた水の流通方向を折り返して、第２の流路２２に供給する「折り返し流路」として機能する。 As shown in FIG. 2 , the second flow path 22 consists of one steam heat storage material restricting cover 26 and two heat radiating heat storage materials joined to the one steam heat storage material restricting cover 26 . It is formed by the restraining cover 27 . Specifically, the second flow path 22 is formed in a portion of the steam heat storage material restricting cover 26 that does not have the through hole 26a and a portion of the heat radiating heat storage material restricting cover 27 that does not have the through hole 27a. facing. The second flow path 22 communicates with the inside of the lower manifold 31c, as shown in FIGS. As a result, the inside of the lower manifold 31 c functions as a “turned flow path” that turns back the flow direction of the water that has flowed in from the first flow path 21 and supplies it to the second flow path 22 .

第３の流路２３は、図２に示すように、放熱用蓄熱材拘束カバー２７と収容部３１ａの内壁との間に形成されている。具体的には、第３の流路２３は、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを有している部分に面している。第３の流路２３は、第２の流路２２に連通している。 As shown in FIG. 2, the third flow path 23 is formed between the heat radiating heat storage material restricting cover 27 and the inner wall of the accommodating portion 31a. Specifically, the third flow path 23 faces a portion of the heat radiating heat storage material restricting cover 27 having the through hole 27a. The third channel 23 communicates with the second channel 22 .

次に、本実施形態の化学蓄熱装置８の作用について説明する。
本実施形態の化学蓄熱装置８が放熱するとき、バルブ３６ａを開くと、水タンク３６内の反応水が、重力によって上側マニホールド３１ｂ内に流入する（図３および図４の白抜き矢印Ｆ１１）。上側マニホールド３１ｂ内に流入する反応水は、整流板３１ｅによって適度に分散され、複数の第１の流路２１のそれぞれに流入する（図３および図４の白抜き矢印Ｆ１２）。第１の流路２１を流れる反応水の一部は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを通って蒸気用蓄熱材拘束カバー２６内に流入し、蒸気用蓄熱材１１と結合する。これにより、蒸気用蓄熱材１１は、発熱する。第１の流路２１を流れる反応水は、蒸気用蓄熱材１１で発生する熱によって加熱されつつ、第１の流路２１をｚ軸のマイナス方向に向かって流れ（図３および図４の白抜き矢印Ｆ１３）、下側マニホールド３１ｃ内に流入する。 Next, the action of the chemical heat storage device 8 of this embodiment will be described.
When the chemical heat storage device 8 of this embodiment releases heat, when the valve 36a is opened, the reaction water in the water tank 36 flows into the upper manifold 31b by gravity (white arrow F11 in FIGS. 3 and 4). The reaction water flowing into the upper manifold 31b is appropriately dispersed by the current plate 31e and flows into each of the plurality of first flow paths 21 (white arrows F12 in FIGS. 3 and 4). A portion of the reaction water flowing through the first flow path 21 flows into the steam heat storage material restricting cover 26 through the through holes 26 a of the steam heat storage material restricting cover 26 and joins with the steam heat storage material 11 . As a result, the steam heat storage material 11 generates heat. The reaction water flowing through the first flow path 21 is heated by the heat generated in the steam heat storage material 11 and flows through the first flow path 21 in the negative direction of the z-axis (the white line in FIGS. 3 and 4). Drawn arrow F13), it flows into the lower manifold 31c.

下側マニホールド３１ｃ内に流入する反応水は、図４に示すように、下側マニホールド３１ｃ内で折り返し、下側マニホールド３１ｃ内と連通している第２の流路２２の入口２２ａから第２の流路２２に流入する（図４の白抜き矢印Ｆ１４）。
第２の流路２２に流入する反応水は、図４および図５に示すように、ｚ軸のプラス方向に向かって流れ（図４および図５の白抜き矢印Ｆ１５）、蒸気用蓄熱材１１で発生する熱によってさらに加熱されることで、第２の流路２２において蒸気となる。第２の流路２２において生成された蒸気は、第２の流路２２の出口２２ｂから、第３の流路２３に流入する（図５の白抜き矢印Ｆ１６）。 As shown in FIG. 4, the reaction water flowing into the lower manifold 31c turns back inside the lower manifold 31c, and flows from the inlet 22a of the second flow path 22 communicating with the inside of the lower manifold 31c to the second flow path. It flows into the flow path 22 (white arrow F14 in FIG. 4).
As shown in FIGS. 4 and 5, the reaction water flowing into the second channel 22 flows in the positive direction of the z-axis (white arrow F15 in FIGS. 4 and 5), By being further heated by the heat generated in , it becomes steam in the second flow path 22 . The steam generated in the second flow path 22 flows into the third flow path 23 from the outlet 22b of the second flow path 22 (white arrow F16 in FIG. 5).

第３の流路２３に流入する蒸気は、放熱用蓄熱材拘束カバー２７の鉛直上方において折り返し（図６の白抜き矢印Ｆ１７）、放熱用蓄熱材拘束カバー２７の径方向の外壁のうち貫通孔２７ａが形成されている外壁と、該外壁に対向する収容部３１ａの内壁との間に流入する（図６の白抜き矢印Ｆ１８）。第３の流路２３の蒸気は、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを通って放熱用蓄熱材拘束カバー２７内に流入し、放熱用蓄熱材１２と結合する。これにより、放熱用蓄熱材１２は、発熱する。 The steam flowing into the third flow path 23 is folded back vertically above the heat storage material restricting cover 27 for heat dissipation (white arrow F17 in FIG. 27a and the inner wall of the housing portion 31a facing the outer wall (white arrow F18 in FIG. 6). The steam in the third flow path 23 flows into the heat radiating heat storage material restricting cover 27 through the through holes 27 a of the heat radiating heat storage material restricting cover 27 and joins with the heat radiating heat storage material 12 . Thereby, the heat storage material 12 for heat dissipation generates heat.

図７は、本実施形態の化学蓄熱反応器１の作用を説明する説明図である。図７は、図１と同じ断面図であって、蒸気用蓄熱材１１および放熱用蓄熱材１２に対する反応水および蒸気の移動と、熱の移動とを模式的に示した図である。なお、図７では、反応水を直線ハッチ（Ｗ１）で示し、反応水と蒸気とが混在した混合流体を直線とドットが混在したハッチ（Ｍ１）で示し、蒸気をドットハッチ（Ｖ１）で示す。 FIG. 7 is an explanatory diagram illustrating the action of the chemical heat storage reactor 1 of this embodiment. FIG. 7 is the same cross-sectional view as FIG. 1, and schematically shows the movement of reaction water and steam with respect to the heat storage material for steam 11 and the heat storage material for heat release 12, and the movement of heat. In FIG. 7, the reaction water is indicated by straight line hatching (W1), the mixed fluid in which reaction water and steam are mixed is indicated by hatching (M1) in which straight lines and dots are mixed, and the steam is indicated by dot hatching (V1). .

第１の流路２１に反応水が流れると、第１の流路２１から貫通孔２６ａを介して蒸気用蓄熱材拘束カバー２６内に流入する反応水（図７の直線ハッチの矢印Ｆ７１）と蒸気用蓄熱材１１とが結合し、蒸気用蓄熱材１１が発熱する。蒸気用蓄熱材１１で発生する熱は、第１の流路２１を流れる反応水と、第２の流路２２を流れる反応水を加熱する（図７の二点鎖線矢印Ｆ７２）。これにより、第２の流路２２において、反応水から蒸気が生成される。
第２の流路２２で生成された蒸気が第３の流路２３に流入すると、第３の流路２３から貫通孔２７ａを介して放熱用蓄熱材拘束カバー２７内に流入する蒸気（図７のドットハッチの矢印Ｆ７３）と放熱用蓄熱材１２とが結合し、放熱用蓄熱材１２が発熱する。放熱用蓄熱材１２で発生する熱は、収容部３１ａの外壁を介して、化学蓄熱反応器１の外部に放出される（図７の点線矢印Ｆ７４）。 When the reaction water flows through the first channel 21, the reaction water flows from the first channel 21 into the steam heat storage material restricting cover 26 through the through hole 26a (the straight hatched arrow F71 in FIG. 7). The steam heat storage material 11 is combined with the steam heat storage material 11 to generate heat. The heat generated in the steam heat storage material 11 heats the reaction water flowing through the first channel 21 and the reaction water flowing through the second channel 22 (chain double-dashed arrow F72 in FIG. 7). Thereby, steam is generated from the reaction water in the second flow path 22 .
When the steam generated in the second flow path 22 flows into the third flow path 23, the steam flows from the third flow path 23 into the heat radiating heat storage material restricting cover 27 through the through holes 27a (see FIG. 7). dot-hatched arrow F73) and heat radiating heat storage material 12 are coupled, and heat radiating heat storage material 12 generates heat. The heat generated in the heat radiating heat storage material 12 is released to the outside of the chemical heat storage reactor 1 through the outer wall of the housing portion 31a (dotted arrow F74 in FIG. 7).

以上説明した、本実施形態の化学蓄熱反応器１によれば、蒸気用蓄熱材拘束カバー２６に隣接して配置されている第１の流路２１と第２の流路２２との間には、下側マニホールド３１ｃが設けられている。ｚ軸のマイナス方向に向かって流れる第１の流路２１の反応水は、下側マニホールド３１ｃ内で折り返され、第２の流路２２においてｚ軸のプラス方向に向かって流れる。これにより、蒸気用蓄熱材１１が発生する熱によって反応水が十分に加熱され蒸気になりやすくなるため、蒸気と結合することで発熱する放熱用蓄熱材１２に、加熱が不十分で蒸気とならなかった反応水がかかることを抑制することができる。したがって、反応水の付着による放熱用蓄熱材１２の温度低下を抑制し、化学蓄熱反応器１の出力温度を比較的高温にすることができる。 According to the chemical heat storage reactor 1 of the present embodiment described above, between the first flow path 21 and the second flow path 22 arranged adjacent to the steam heat storage material restricting cover 26, , and a lower manifold 31c. The reaction water in the first channel 21 flowing in the negative direction of the z-axis is turned back in the lower manifold 31c and flows in the second channel 22 in the positive direction of the z-axis. As a result, the reaction water is sufficiently heated by the heat generated by the steam heat storage material 11 and becomes easily steamed. It is possible to suppress the splashing of reaction water that was not present. Therefore, it is possible to suppress the temperature drop of the heat radiating heat storage material 12 due to the adhesion of the reaction water, and make the output temperature of the chemical heat storage reactor 1 relatively high.

また、本実施形態の化学蓄熱反応器１によれば、第２の流路２２は、第３の流路２３に接続する出口２２ｂが下側マニホールド３１ｃに接続する入口２２ａより高い位置にある。第２の流路２２で生成される蒸気は、反応水より密度が小さいため、出口２２ｂに向かって移動する。これにより、第２の流路２２の出口２２ｂからは蒸気のみが排出されるため、第２の流路２２の下流に位置する第３の流路２３には、蒸気のみが流れることとなる。したがって、放熱用蓄熱材１２に反応水がかかることを抑制することができるため、化学蓄熱反応器の出力温度を比較的高温にすることができる。 Further, according to the chemical heat storage reactor 1 of the present embodiment, in the second channel 22, the outlet 22b connected to the third channel 23 is located higher than the inlet 22a connected to the lower manifold 31c. The steam produced in the second channel 22 is less dense than the reaction water and therefore moves towards the outlet 22b. As a result, only steam is discharged from the outlet 22 b of the second flow path 22 , so that only steam flows through the third flow path 23 located downstream of the second flow path 22 . Therefore, it is possible to suppress the reaction water from splashing onto the heat radiating heat storage material 12, so that the output temperature of the chemical heat storage reactor can be made relatively high.

また、本実施形態の化学蓄熱反応器１によれば、蒸気用蓄熱材拘束カバー２６内の蒸気用蓄熱材１１は、第１の流路２１を流れる液体状の水によって発熱する。一方、放熱用蓄熱材拘束カバー２７内の放熱用蓄熱材１２は、第３の流路２３を流れる蒸気によって発熱する。また、蒸気が生成される第２の流路２２は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを有していない部分と、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを有していない部分に面しているため、第２の流路２２を流れる、液体状の水と蒸気とが混在する混合流体によって、蒸気用蓄熱材１１および放熱用蓄熱材１２が発熱することはない。このように、蒸気用蓄熱材１１を発熱させる水と、放熱用蓄熱材１２を発熱させる蒸気とは、第２の流路２２を挟んで、第１の流路２１と第３の流路２３とのそれぞれにおいて流れるため、放熱用蓄熱材１２に水がかかることを抑制することができる。これにより、化学蓄熱反応器１の出力温度を比較的高温にすることができる。 Further, according to the chemical heat storage reactor 1 of the present embodiment, the vapor heat storage material 11 inside the vapor heat storage material restricting cover 26 generates heat by the liquid water flowing through the first flow path 21 . On the other hand, the heat radiating heat storage material 12 in the heat radiating heat storage material restricting cover 27 generates heat by the steam flowing through the third flow path 23 . In addition, the second flow path 22 in which steam is generated does not have the through hole 26a of the heat storage material restricting cover 26 for steam and the through hole 27a of the heat storage material restricting cover 27 for heat dissipation. Since the heat storage material for steam 11 and the heat storage material for heat dissipation 12 do not generate heat due to the mixed fluid of liquid water and steam flowing through the second flow path 22 . In this way, the water that causes the heat storage material for steam 11 to generate heat and the steam that causes the heat storage material for heat dissipation 12 to generate heat pass through the first flow path 21 and the third flow path 23 with the second flow path 22 interposed therebetween. and , it is possible to prevent the heat storage material for heat dissipation 12 from being splashed with water. Thereby, the output temperature of the chemical heat storage reactor 1 can be made relatively high.

また、本実施形態の化学蓄熱反応器１によれば、第３の流路２３は、放熱用蓄熱材１２と収容部３１ａの内壁との間に形成されるため、第３の流路２３を流れる蒸気は、放熱用蓄熱材１２の収容部３１ａの内壁側から放熱用蓄熱材１２と結合する。これにより、蒸気との結合によって発生する熱は、放熱用蓄熱材１２の収容部３１ａの内壁側から先に発生するため、発生した熱は、速やかに隣接している収容部３１ａに伝わり、外部に放出される。したがって、化学蓄熱反応器１の出力温度を比較的高温にすることができるとともに、放熱速度を向上することができる。 Further, according to the chemical heat storage reactor 1 of the present embodiment, the third flow path 23 is formed between the heat radiating heat storage material 12 and the inner wall of the housing portion 31a. The flowing steam joins with the heat storage material for heat dissipation 12 from the inner wall side of the accommodation portion 31a of the heat storage material for heat dissipation 12 . As a result, the heat generated by the combination with the steam is first generated from the inner wall side of the accommodating portion 31a of the heat radiating heat storage material 12, so that the generated heat is quickly transmitted to the adjacent accommodating portion 31a, and is transferred to the outside. released to Therefore, the output temperature of the chemical heat storage reactor 1 can be made relatively high, and the heat dissipation rate can be improved.

また、本実施形態の化学蓄熱反応器１によれば、水タンク３６が供給する反応水を複数の第１の流路２１のそれぞれに流すとき、上側マニホールド３１ｂ内の整流板３１ｅは、複数の第１の流路２１のそれぞれで反応水が流れるように反応水を適度に分散させることができる。これにより、複数の第１の流路２１のそれぞれにおいて反応水を効率的に加熱することができる。 Further, according to the chemical heat storage reactor 1 of the present embodiment, when the reaction water supplied from the water tank 36 is allowed to flow through each of the plurality of first flow paths 21, the rectifying plate 31e in the upper manifold 31b has a plurality of The reaction water can be appropriately dispersed so that the reaction water flows in each of the first flow paths 21 . Thereby, the reaction water can be efficiently heated in each of the plurality of first flow paths 21 .

また、本実施形態の化学蓄熱反応器１によれば、水タンク３６は、第１の流路２１の鉛直方向上方に位置するため、重力の作用を使って反応水を第１の流路２１に流すことができる。これにより、第１の流路２１にスムーズに反応水を供給することができる。 In addition, according to the chemical heat storage reactor 1 of the present embodiment, the water tank 36 is positioned vertically above the first flow path 21, so that the reaction water is transferred to the first flow path 21 using the action of gravity. can flow to Thereby, reaction water can be smoothly supplied to the first channel 21 .

＜第２実施形態＞
図８は、第２実施形態の化学蓄熱反応器の断面図である。図９と図１０と図１１は、第２実施形態の化学蓄熱反応器の作用を説明する説明図である。第２実施形態の化学蓄熱反応器は、第１実施形態の化学蓄熱反応器（図２）と比較すると、第１の流路を形成する構成が異なる。なお、図８～図１１中には、水平方向を示す矢印ｘの方向に平行な方向のｘ軸と、水平方向であって矢印ｘが示す方向に対して垂直な方向を示す矢印ｙの方向に平行な方向のｙ軸と、鉛直方向を示す矢印ｚの方向に平行な方向のｚ軸とを示す。 <Second embodiment>
FIG. 8 is a cross-sectional view of the chemical heat storage reactor of the second embodiment. 9, 10 and 11 are explanatory diagrams for explaining the action of the chemical heat storage reactor of the second embodiment. The chemical heat storage reactor of the second embodiment differs from the chemical heat storage reactor of the first embodiment (FIG. 2) in the configuration of forming the first flow path. 8 to 11, the x-axis parallel to the direction of the arrow x indicating the horizontal direction and the direction of the arrow y indicating the horizontal direction and perpendicular to the direction indicated by the arrow x and the z-axis parallel to the direction of the arrow z indicating the vertical direction.

本実施形態の化学蓄熱反応器２は、５個の蓄熱体５と、反応容器５１とを備える。第２実施形態では、５個の蓄熱体５は、反応水との結合によって反応水から蒸気を生成させるための熱を発生する２個の蓄熱体５ａと、蒸気との結合によって外部に放出する熱を発生する３個の蓄熱体５ｂとから構成されている。２個の蓄熱体５ａは、蒸気用蓄熱材１１と、蒸気用蓄熱材拘束カバー２６とを備える。３個の蓄熱体５ｂは、放熱用蓄熱材１２と、放熱用蓄熱材拘束カバー２７とを備える。 The chemical heat storage reactor 2 of this embodiment includes five heat storage bodies 5 and a reaction vessel 51 . In the second embodiment, five heat storage bodies 5 are composed of two heat storage bodies 5a that generate heat for generating steam from the reaction water by combining with the reaction water, and release the heat to the outside by combining with the steam. It is composed of three heat storage bodies 5b that generate heat. The two heat storage bodies 5 a include a steam heat storage material 11 and a steam heat storage material restraining cover 26 . The three heat accumulators 5b are provided with a heat radiating heat storage material 12 and a heat radiating heat storage material restricting cover 27 .

反応容器５１は、図８に示すように、互いに接合されて束となっている蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を内部に収容するとともに、図示しない水タンクに接続されている。反応容器５１は、収容部５１ａと、接続流路５１ｂとを備える。 As shown in FIG. 8, the reaction vessel 51 accommodates therein the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 that are joined together to form a bundle, and is connected to a water tank (not shown). ing. The reaction container 51 includes an accommodating portion 51a and a connecting channel 51b.

収容部５１ａは、内部に、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を収容している空間が形成されている、横断面が六角形状のケースである。本実施形態では、２個の蒸気用蓄熱材拘束カバー２６と３個の放熱用蓄熱材拘束カバー２７は、それぞれの軸心Ａ２６、Ａ２７が鉛直方向に沿うように収容されている。本実施形態では、図８（ｂ）に示すように、収容部５１ａは、内部のｚ軸方向の長さが、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７とのｚ軸方向の長さより長くなるように形成されている。 The accommodating portion 51a is a case having a hexagonal cross section and having a space inside for accommodating the steam heat storage material restricting cover 26 and the heat radiating heat storage material restricting cover 27 . In this embodiment, the two vapor heat storage material restraining covers 26 and the three heat radiating heat storage material restraining covers 27 are accommodated so that their respective axes A26 and A27 extend in the vertical direction. In this embodiment, as shown in FIG. 8(b), the accommodating portion 51a has an inner length in the z-axis direction equal to the z-axis direction between the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27. is formed to be longer than the length of

本実施形態では、図８（ａ）に示すように、収容部５１ａの内壁には、２個の蒸気用蓄熱材拘束カバー２６と、３個の放熱用蓄熱材拘束カバー２７とがそれぞれ隣接し、接合されている。また、図８（ａ）での、蒸気用蓄熱材拘束カバー２６の軸心Ａ２６と、第２の流路４２の軸心Ａ４２と、放熱用蓄熱材拘束カバー２７の軸心Ａ２７とを結ぶＦ－Ｆ線断面図である図８（ｂ）に示すように、２個の蒸気用蓄熱材拘束カバー２６は、ｚ軸のプラス側の端面２６ｂが収容部５１ａの内壁に接合されている。これにより、蒸気用蓄熱材拘束カバー２６のｚ軸のマイナス側の端面の鉛直方向下側には、空間５１ｃが形成される。また、３個の放熱用蓄熱材拘束カバー２７は、ｚ軸のマイナス側の端面２７ｂが収容部５１ａの内壁に接合されている。これにより、放熱用蓄熱材拘束カバー２７のｚ軸のプラス側の端面の鉛直方向上側には、空間５１ｄが形成される。 In this embodiment, as shown in FIG. 8(a), two vapor heat storage material restricting covers 26 and three heat radiating heat storage material restricting covers 27 are adjacent to the inner wall of the accommodating portion 51a. , are spliced. Further, in FIG. 8A, F connecting the axis A26 of the steam heat storage material restricting cover 26, the axis A42 of the second flow path 42, and the axis A27 of the heat radiating heat storage material restricting cover 27 As shown in FIG. 8(b), which is a cross-sectional view taken along line -F, the two steam heat storage material restricting covers 26 are joined to the inner wall of the accommodating portion 51a at the positive side end faces 26b of the z-axis. As a result, a space 51c is formed below the end surface of the steam heat storage material restricting cover 26 on the minus side of the z-axis in the vertical direction. The end faces 27b on the minus side of the z-axis of the three heat radiating heat storage material restricting covers 27 are joined to the inner wall of the accommodating portion 51a. As a result, a space 51d is formed above the end surface of the heat storage material restraint cover 27 for heat dissipation on the positive side of the z-axis in the vertical direction.

接続流路５１ｂは、収容部５１ａの外壁であって、蒸気用蓄熱材拘束カバー２６が接合されている部位の外壁に接続されている。接続流路５１ｂは、図示しない水タンクが貯留する反応水を、収容部５１ａ内に導入する。 The connection flow path 51b is connected to the outer wall of the portion of the outer wall of the accommodating portion 51a to which the steam heat storage material restricting cover 26 is joined. The connection channel 51b introduces reaction water stored in a water tank (not shown) into the storage portion 51a.

化学蓄熱反応器２には、反応容器５１内の蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７とによって、反応水または蒸気が流通可能な複数の流路が形成されている。
第１の流路４１は、図８に示すように、２個の蒸気用蓄熱材拘束カバー２６と、蒸気用蓄熱材拘束カバー２６のｘ軸のプラス側に位置する収容部５１ａの内壁との間に１か所形成されている。また、第１の流路４１は、２個の蒸気用蓄熱材拘束カバー２６と、該２個の蒸気用蓄熱材拘束カバー２６に接合する放熱用蓄熱材拘束カバー２７との間に１か所形成されている。第１の流路４１は、図８（ｂ）に示すように、接続流路５１ｂと空間５１ｃとを連通している。また、第１の流路４１は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを介して、蒸気用蓄熱材拘束カバー２６内と連通している。 In the chemical heat storage reactor 2 , the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 in the reaction vessel 51 form a plurality of flow paths through which reaction water or steam can flow.
As shown in FIG. 8, the first flow path 41 is defined by the two steam heat storage material restricting covers 26 and the inner wall of the accommodating portion 51a located on the plus side of the x-axis of the steam heat storage material restricting cover 26. It is formed in one place between them. In addition, the first flow path 41 is provided at one location between the two steam heat storage material restricting covers 26 and the heat radiation heat storage material restricting cover 27 joined to the two steam heat storage material restricting covers 26 . formed. The first channel 41 communicates the connection channel 51b and the space 51c, as shown in FIG. 8(b). Further, the first flow path 41 communicates with the inside of the steam heat storage material restricting cover 26 via the through hole 26 a of the steam heat storage material restricting cover 26 .

第２の流路４２は、図８に示すように、２個の放熱用蓄熱材拘束カバー２７と、該２個の放熱用蓄熱材拘束カバー２７に接合する蒸気用蓄熱材拘束カバー２６との間に２か所形成されている。第２の流路４２は、図８（ｂ）に示すように、空間５１ｃと空間５１ｄとに連通している。これにより、空間５１ｃは、第１の流路４１から流入してきた水の流通方向を折り返して、第２の流路４２に供給する「折り返し流路」として機能する。 As shown in FIG. 8, the second flow path 42 consists of two heat radiating heat storage material restricting covers 27 and a steam heat storage material restricting cover 26 joined to the two heat radiating heat storage material restricting covers 27. It is formed in two places in between. The second flow path 42 communicates with the space 51c and the space 51d, as shown in FIG. 8(b). As a result, the space 51 c functions as a “turned flow path” that turns back the flow direction of the water that has flowed in from the first flow path 41 and supplies it to the second flow path 42 .

第３の流路４３は、図８に示すように、放熱用蓄熱材拘束カバー２７と、収容部５１ａの内壁との間に６か所形成されている。第３の流路４３は、空間５１ｄに連通している。第３の流路４３は、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを介して、放熱用蓄熱材拘束カバー２７内と連通している。 As shown in FIG. 8, six third flow paths 43 are formed between the heat radiating heat storage material restricting cover 27 and the inner wall of the accommodating portion 51a. The third flow path 43 communicates with the space 51d. The third flow path 43 communicates with the inside of the heat radiating heat storage material restricting cover 27 via the through hole 27 a of the heat radiating heat storage material restricting cover 27 .

次に、本実施形態の化学蓄熱装置８の作用について説明する。
本実施形態の化学蓄熱装置８が放熱するとき、接続流路５１ｂを介して、第１の流路４１に反応水Ｗ１が供給される（図９の白抜き矢印Ｆ２１）。第１の流路４１を流れる反応水Ｗ１は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを通って蒸気用蓄熱材拘束カバー２６内に流入し（図９の直線ハッチの矢印Ｆ２２）、蒸気用蓄熱材１１と結合する。これにより、蒸気用蓄熱材１１は、発熱する（図９の点線矢印Ｆ２３）。第１の流路２１を流れる反応水Ｗ１は、蒸気用蓄熱材１１で発生する熱によって加熱されつつ、第１の流路２１をｚ軸のマイナス方向に向かって流れ、空間５１ｃ内に流入する。 Next, the action of the chemical heat storage device 8 of this embodiment will be described.
When the chemical heat storage device 8 of the present embodiment releases heat, the reaction water W1 is supplied to the first channel 41 via the connection channel 51b (white arrow F21 in FIG. 9). The reaction water W1 flowing through the first flow path 41 flows through the through holes 26a of the steam heat storage material restricting cover 26 and flows into the steam heat storage material restricting cover 26 (straight-hatched arrow F22 in FIG. 9). It is combined with the heat storage material 11 for use. As a result, the steam heat storage material 11 generates heat (dotted line arrow F23 in FIG. 9). The reaction water W1 flowing through the first channel 21 is heated by the heat generated in the steam heat storage material 11, flows through the first channel 21 in the negative direction of the z-axis, and flows into the space 51c. .

空間５１ｃ内に流入する反応水は、図１０に示すように、空間５１ｃ内で折り返し、空間５１ｃと連通している第２の流路４２の入口４２ａから第２の流路４２に流入する（図１０の白抜き矢印Ｆ２４）。
第２の流路４２に流入する反応水は、ｚ軸のプラス方向に向かって流れ（図１０の白抜き矢印Ｆ２５）、蒸気用蓄熱材１１で発生する熱によってさらに加熱される（図１０の白抜き矢印Ｆ２３）ことで、第２の流路４２において蒸気となる。第２の流路４２において生成された蒸気Ｖ１は、第２の流路４２の出口４２ｂから、空間５１ｄを介して第３の流路４３に流入する（図１０の白抜き矢印Ｆ２６）。 As shown in FIG. 10, the reaction water flowing into the space 51c turns around in the space 51c and flows into the second flow channel 42 from the inlet 42a of the second flow channel 42 communicating with the space 51c ( White arrow F24 in FIG. 10).
The reaction water flowing into the second channel 42 flows in the positive direction of the z-axis (white arrow F25 in FIG. 10), and is further heated by the heat generated in the steam heat storage material 11 ( Outlined arrow F23), it becomes steam in the second flow path . The steam V1 generated in the second flow path 42 flows from the outlet 42b of the second flow path 42 into the third flow path 43 via the space 51d (white arrow F26 in FIG. 10).

第３の流路４３に流入する蒸気Ｖ１は、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを通って放熱用蓄熱材拘束カバー２７内に流入し（図１１のドットハッチの矢印Ｆ２７）、放熱用蓄熱材１２と結合する。これにより、放熱用蓄熱材１２は、発熱する（図１１の白抜き矢印Ｆ２８）。放熱用蓄熱材１２で発生する熱は、化学蓄熱装置８の外部に放出される。 The vapor V1 flowing into the third flow path 43 passes through the through holes 27a of the heat radiating heat storage material restricting cover 27 and flows into the heat radiating heat storage material restricting cover 27 (dot hatched arrow F27 in FIG. 11). It is combined with the heat storage material 12 for use. As a result, the heat radiating heat storage material 12 generates heat (white arrow F28 in FIG. 11). The heat generated by the heat radiating heat storage material 12 is released to the outside of the chemical heat storage device 8 .

以上説明した、本実施形態の化学蓄熱反応器２によれば、第１の流路４１と第２の流路４２とは、空間５１ｃによって接続されている。ｚ軸のマイナス方向に向かって流れる第１の流路４１の反応水は、空間５１ｃで折り返され、第２の流路４２においてｚ軸のプラス方向に向かって流れる。これにより、蒸気用蓄熱材１１が発生する熱によって反応水を十分に加熱し蒸気とすることができるため、放熱用蓄熱材１２に反応水がかかることを抑制できる。したがって、放熱用蓄熱材１２の温度低下を抑制し、化学蓄熱反応器２の出力温度を高温にすることができる。 According to the chemical heat storage reactor 2 of this embodiment described above, the first channel 41 and the second channel 42 are connected by the space 51c. The reaction water in the first channel 41 flowing in the negative direction of the z-axis is folded back at the space 51c and flows in the second channel 42 in the positive direction of the z-axis. As a result, the heat generated by the steam heat storage material 11 can sufficiently heat the reaction water into steam, so that the heat dissipation heat storage material 12 can be prevented from being splashed by the reaction water. Therefore, it is possible to suppress the temperature drop of the heat radiating heat storage material 12 and increase the output temperature of the chemical heat storage reactor 2 .

＜第３実施形態＞
図１２は、第３実施形態の化学蓄熱反応器の断面図である。第３実施形態の化学蓄熱反応器は、第２実施形態の化学蓄熱反応器（図８）と比較すると、蒸気用蓄熱材拘束カバーと放熱用蓄熱材拘束カバーのそれぞれの軸心が沿う方向が異なる。なお、図１２中には、水平方向を示す矢印ｘの方向に平行な方向のｘ軸と、水平方向であって矢印ｘが示す方向に対して垂直な方向を示す矢印ｙの方向に平行な方向のｙ軸と、鉛直方向を示す矢印ｚの方向に平行な方向のｚ軸とを示す。 <Third Embodiment>
FIG. 12 is a cross-sectional view of the chemical heat storage reactor of the third embodiment. In the chemical heat storage reactor of the third embodiment, when compared with the chemical heat storage reactor of the second embodiment (FIG. 8), the axial directions of the heat storage material restricting cover for steam and the heat storage material restricting cover for heat radiation are aligned. different. In addition, in FIG. 12, the x-axis in the direction parallel to the direction of the arrow x indicating the horizontal direction and the direction of the arrow y indicating the horizontal direction and perpendicular to the direction indicated by the arrow x are shown. A directional y-axis and a z-axis oriented parallel to the direction of the arrow z indicating the vertical direction are shown.

本実施形態の化学蓄熱反応器３は、５個の蓄熱体５と、反応容器５１とを備える。化学蓄熱反応器３では、２個の蒸気用蓄熱材拘束カバー２６と３個の放熱用蓄熱材拘束カバー２７は、それぞれの軸心Ａ２６、Ａ２７がｙ軸の方向に沿うように、収容部５１ａに収容されている。また、化学蓄熱反応器３では、図１２（ａ）のＧ-Ｇ線断面図である図１２（ｂ）に示すように、第１の流路４１が、第３の流路４３より低い位置となるように、２個の蒸気用蓄熱材拘束カバー２６と３個の放熱用蓄熱材拘束カバー２７とが配置されている。これにより、反応水の加熱によって生成される蒸気が、反応水との密度の違いによってｚ軸のプラス方向に向かって移動し、第３の流路４３に蒸気のみが流入しやすくなる。 The chemical heat storage reactor 3 of this embodiment includes five heat storage bodies 5 and a reaction vessel 51 . In the chemical heat storage reactor 3, the two steam heat storage material constraining covers 26 and the three heat radiating heat storage material constraining covers 27 are arranged such that their axes A26 and A27 are aligned in the direction of the y-axis. are housed in Moreover, in the chemical heat storage reactor 3, as shown in FIG. Two vapor heat storage material restricting covers 26 and three heat radiating heat storage material restricting covers 27 are arranged so as to be . As a result, the steam generated by heating the reaction water moves in the positive direction of the z-axis due to the difference in density from the reaction water, and only the steam easily flows into the third channel 43 .

以上説明した、本実施形態の化学蓄熱反応器３によれば、ｙ軸のマイナス方向に向かって流れる第１の流路４１の反応水は、空間５１ｃで折り返され、第２の流路４２においてｙ軸のプラス方向に向かって流れる。これにより、蒸気用蓄熱材１１が発生する熱によって反応水を十分に加熱し蒸気とすることができるため、放熱用蓄熱材１２に反応水がかかることを抑制できる。したがって、放熱用蓄熱材１２の温度低下を抑制し、化学蓄熱反応器３の出力温度を高温にすることができる。 As described above, according to the chemical heat storage reactor 3 of the present embodiment, the reaction water in the first flow path 41 flowing in the negative direction of the y-axis is folded back at the space 51c, and in the second flow path 42 It flows in the positive direction of the y-axis. As a result, the heat generated by the steam heat storage material 11 can sufficiently heat the reaction water into steam, so that the heat dissipation heat storage material 12 can be prevented from being splashed by the reaction water. Therefore, it is possible to suppress the temperature drop of the heat radiating heat storage material 12 and increase the output temperature of the chemical heat storage reactor 3 .

＜第４実施形態＞
図１３は、第４実施形態の化学蓄熱反応器の模式図である。第４実施形態の化学蓄熱反応器は、第２実施形態の化学蓄熱反応器（図８）と比較すると、蓄熱材の数および反応容器の形状が異なる。なお、図１３中には、水平方向を示す矢印ｘの方向に平行な方向のｘ軸と、水平方向であって矢印ｘが示す方向に対して垂直な方向を示す矢印ｙの方向に平行な方向のｙ軸と、鉛直方向を示す矢印ｚの方向に平行な方向のｚ軸とを示す。 <Fourth Embodiment>
FIG. 13 is a schematic diagram of a chemical heat storage reactor of the fourth embodiment. The chemical heat storage reactor of the fourth embodiment differs from the chemical heat storage reactor of the second embodiment (FIG. 8) in the number of heat storage materials and the shape of the reaction vessel. In FIG. 13, the x-axis parallel to the direction of the arrow x indicating the horizontal direction and the direction of the arrow y indicating the horizontal direction and perpendicular to the direction indicated by the arrow x are shown. A directional y-axis and a z-axis oriented parallel to the direction of the arrow z indicating the vertical direction are shown.

本実施形態の化学蓄熱反応器４は、８個の蓄熱体５と、反応容器７１とを備える。第４実施形態では、８個の蓄熱体５は、反応水との結合によって反応水から蒸気を生成させるための熱を発生する２個の蓄熱体５ａと、蒸気との結合によって外部に放出する熱を発生する６個の蓄熱体５ｂとから構成されている。６個の蓄熱体５ｂは、図１３に示すように、ｙ軸方向に２個並べられている蓄熱体５ａのｘ軸のプラス側とマイナス側とのそれぞれに、３個ずつｙ軸方向に並ぶように配置されている。 The chemical heat storage reactor 4 of this embodiment includes eight heat storage bodies 5 and a reaction vessel 71 . In the fourth embodiment, the eight heat storage elements 5 are composed of two heat storage elements 5a that generate heat for generating steam from the reaction water by combining with the reaction water, and release the heat to the outside by combining with the steam. It is composed of six heat storage bodies 5b that generate heat. As shown in FIG. 13, the six heat storage bodies 5b are arranged in the y-axis direction three by three on each of the plus side and the minus side of the x-axis of the two heat storage bodies 5a arranged in the y-axis direction. are arranged as

反応容器７１は、図１３に示すように、互いに接合されて束となっている蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を内部に収容するとともに、図示しない水タンクに接続されている。反応容器７１は、収容部７１ａと、図示しない接続流路とを備える。 As shown in FIG. 13, the reaction vessel 71 accommodates therein the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 which are joined together to form a bundle, and is connected to a water tank (not shown). ing. The reaction container 71 includes a storage portion 71a and a connection channel (not shown).

収容部７１ａは、内部に、蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７を収容している空間が形成されているケースである。収容部７１ａの内壁は、２個並べられている蓄熱体５ａの蒸気用蓄熱材拘束カバー２６の外壁のそれぞれに隣接しつつ、３個ずつ並べられている蓄熱体５ｂの放熱用蓄熱材拘束カバー２７の外壁のそれぞれに隣接するように形成されている。隣接する収容部７１ａの内壁と蒸気用蓄熱材拘束カバー２６の外壁、隣接する収容部７１ａの内壁と放熱用蓄熱材拘束カバー２７の外壁、および、隣接する蒸気用蓄熱材拘束カバー２６の外壁と放熱用蓄熱材拘束カバー２７の外壁は、接合されている。 The accommodating portion 71a is a case in which a space is formed to accommodate the steam heat storage material restricting cover 26 and the heat radiating heat storage material restricting cover 27 . The inner wall of the accommodating portion 71a is adjacent to the outer wall of each of the steam heat storage material restraining covers 26 of the two heat storage bodies 5a arranged side by side, and the heat radiation heat storage material restraining covers of the three heat storage bodies 5b arranged side by side. It is formed adjacent to each of the 27 outer walls. The inner wall of the adjacent accommodating portion 71a and the outer wall of the steam heat storage material restricting cover 26, the inner wall of the adjacent accommodating portion 71a and the outer wall of the heat radiating heat storage material restricting cover 27, and the adjacent outer wall of the steam heat storage material restricting cover 26. The outer wall of the heat radiating heat storage material restricting cover 27 is joined.

本実施形態の化学蓄熱反応器４には、反応容器７１内の蒸気用蓄熱材拘束カバー２６と放熱用蓄熱材拘束カバー２７とによって、反応水または蒸気が流通可能な複数の流路が形成されている。
第１の流路６１は、互いに接合されている２個の蒸気用蓄熱材拘束カバー２６と、該接合されている２個の蒸気用蓄熱材拘束カバー２６に接合されている１個の放熱用蓄熱材拘束カバー２７とによって、２か所形成されている。第１の流路６１は、図示しない水タンクと蓄熱体５ａのｚ軸のマイナス側の端面の鉛直方向下側の空間とに連通している。第１の流路６１は、蒸気用蓄熱材拘束カバー２６の貫通孔２６ａを介して、蒸気用蓄熱材拘束カバー２６内と連通している。 In the chemical heat storage reactor 4 of the present embodiment, the steam heat storage material restricting cover 26 and the heat radiation heat storage material restricting cover 27 in the reaction vessel 71 form a plurality of flow paths through which reaction water or steam can flow. ing.
The first flow path 61 consists of two steam heat storage material restricting covers 26 joined to each other and one heat radiating heat storage material restricting cover 26 joined to the two steam heat storage material restricting covers 26 joined to each other. It is formed in two places by the heat storage material restricting cover 27 . The first flow path 61 communicates with a water tank (not shown) and a space below the end surface of the heat storage element 5a on the minus side of the z-axis in the vertical direction. The first flow path 61 communicates with the inside of the steam heat storage material restricting cover 26 via the through hole 26 a of the steam heat storage material restricting cover 26 .

第２の流路６２は、２個の放熱用蓄熱材拘束カバー２７と、該２個の放熱用蓄熱材拘束カバー２７に接合する蒸気用蓄熱材拘束カバー２６との間に、合計４か所形成されている。第２の流路６２は、蓄熱体５ａのｚ軸のマイナス側の端面の鉛直方向下側の空間と、蓄熱体５ｂのｚ軸のプラス側の端面の鉛直方向上側の空間と、に連通していることから、第２の流路６２の蒸気の出口は、反応水の入口より高い位置にある。また、蓄熱体５ａのｚ軸のマイナス側の端面の鉛直方向下側の空間は、第１の流路６１から流入してきた水の流通方向を折り返して、第２の流路６２に供給する「折り返し流路」として機能する。 A total of four second flow paths 62 are provided between the heat radiating heat storage material restricting covers 27 and the steam heat storage material restricting cover 26 joined to the heat radiating heat storage material restricting covers 27. formed. The second flow path 62 communicates with the space vertically below the end surface of the heat storage element 5a on the minus side of the z-axis and the space above the end surface of the heat storage element 5b on the plus side of the z-axis in the vertical direction. Therefore, the vapor outlet of the second channel 62 is positioned higher than the reaction water inlet. In addition, the space vertically below the end face of the heat storage element 5a on the minus side of the z-axis turns back the flow direction of the water flowing in from the first flow path 61 and supplies it to the second flow path 62. It functions as a "turning channel".

第３の流路６３は、蓄熱体５ｂと、収容部７１ａの内壁との間に形成されている。第３の流路６３は、蓄熱体５ｂのｚ軸のプラス側の端面の鉛直方向上側の空間に連通している。第３の流路６３は、放熱用蓄熱材拘束カバー２７の貫通孔２７ａを介して、放熱用蓄熱材拘束カバー２７内と連通している。 The third flow path 63 is formed between the heat storage element 5b and the inner wall of the housing portion 71a. The third flow path 63 communicates with the space above the end surface of the heat storage element 5b on the positive side of the z-axis in the vertical direction. The third flow path 63 communicates with the inside of the heat radiating heat storage material restricting cover 27 via the through hole 27 a of the heat radiating heat storage material restricting cover 27 .

以上説明した、本実施形態の化学蓄熱反応器４によれば、ｚ軸のマイナス方向に向かって流れる第１の流路６１の反応水は、蓄熱体５ａのｚ軸のマイナス側の端面の鉛直方向下側の空間で折り返され、第２の流路６２においてｚ軸のプラス方向に向かって流れる。これにより、蒸気用蓄熱材１１が発生する熱によって反応水を十分に加熱し蒸気とすることができるため、放熱用蓄熱材１２に反応水がかかることを抑制できる。したがって、放熱用蓄熱材１２の温度低下を抑制し、化学蓄熱反応器４の出力温度を高温にすることができる。 According to the chemical heat storage reactor 4 of the present embodiment described above, the reaction water in the first flow path 61 flowing in the negative direction of the z-axis is perpendicular to the end face of the heat storage element 5a on the negative side of the z-axis. It is folded back in the lower space and flows in the second flow path 62 in the positive direction of the z-axis. As a result, the heat generated by the steam heat storage material 11 can sufficiently heat the reaction water into steam, so that the heat dissipation heat storage material 12 can be prevented from being splashed by the reaction water. Therefore, it is possible to suppress the temperature drop of the heat radiating heat storage material 12 and increase the output temperature of the chemical heat storage reactor 4 .

＜本実施形態の変形例＞
本発明は上記の実施形態に限られるものではなく、その要旨を逸脱しない範囲において種々の態様において実施することが可能であり、例えば次のような変形も可能である。 <Modification of this embodiment>
The present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the scope of the invention. For example, the following modifications are possible.

［変形例１］
上述の実施形態では、「折り返し流路」は、第２の流路で反応水が流れる方向を第１の流路で反応水が流れる方向とは反対の方向に折り返させるとした。しかしながら、折り返し流路が折り返す方向はこれに限定されない。第１の流路から流入してきた水の流通方向を折り返して、第２の流路に供給すればよい。これにより、第１の流路と第２の流路とで、蒸気用蓄熱材拘束カバー２６に沿って流れる距離が長くなるため、反応水の温度が上がりやすくなり蒸気が生成されやすくなる。したがって、放熱用蓄熱材１２に反応水がかかることを抑制でき、放熱用蓄熱材１２の温度低下を抑制し、化学蓄熱反応器の出力温度を高温にすることができる。 [Modification 1]
In the above-described embodiment, the "turned-back channel" is such that the direction in which the reaction water flows in the second channel is turned back in the direction opposite to the direction in which the reaction water flows in the first channel. However, the direction in which the turn-back flow path turns back is not limited to this. The flow direction of the water flowing in from the first channel may be reversed and supplied to the second channel. As a result, the distance of flow along the steam heat storage material restricting cover 26 becomes longer between the first channel and the second channel, so that the temperature of the reaction water is likely to rise and steam is likely to be generated. Therefore, it is possible to suppress the reaction water from splashing on the heat radiating heat storage material 12, suppress the temperature drop of the heat radiating heat storage material 12, and increase the output temperature of the chemical heat storage reactor.

［変形例２］
第１、２、４実施形態では、第２の流路の出口は、入口より高い位置にあるとした。しかしながら、第２の流路における出口と入口との関係は、これに限定されない。第３実施形態のように、同じ高さであってもよいが、第３の流路は、第１の流路より高い位置にあることが望ましい。 [Modification 2]
In the first, second, and fourth embodiments, the outlet of the second channel is positioned higher than the inlet. However, the relationship between the outlet and the inlet in the second channel is not limited to this. Although they may be at the same height as in the third embodiment, it is desirable that the third channel be higher than the first channel.

［変形例３］
上述の実施形態では、蓄熱体は、蓄熱材と、蓄熱材拘束カバーとを備えるとした。しかいしながら、蓄熱体の構成は、これに限定されない。 [Modification 3]
In the above-described embodiments, the heat storage element includes the heat storage material and the heat storage material restraining cover. However, the configuration of the heat storage body is not limited to this.

以上、実施形態、変形例に基づき本態様について説明してきたが、上記した態様の実施の形態は、本態様の理解を容易にするためのものであり、本態様を限定するものではない。本態様は、その趣旨並びに特許請求の範囲を逸脱することなく、変更、改良され得るとともに、本態様にはその等価物が含まれる。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除することができる。 The present aspect has been described above based on the embodiments and modifications, but the above-described embodiments are intended to facilitate understanding of the present aspect, and do not limit the present aspect. This aspect may be modified and modified without departing from its spirit and scope of the claims, and this aspect includes equivalents thereof. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate.

１、２、３、４…化学蓄熱反応器
５、５ａ、５ｂ…蓄熱体
８…化学蓄熱装置
１０…蓄熱材
１１…蒸気用蓄熱材
１２…放熱用蓄熱材
２０…蓄熱材拘束カバー
２１、４１、６１…第１の流路
２２、４２、６２…第２の流路
２２ａ、４２ａ…入口
２２ｂ、４２ｂ…出口
２３、４３、６３…第３の流路
２６…蒸気用蓄熱材拘束カバー
２６ａ…貫通孔
２６ｂ…端面
２７…放熱用蓄熱材拘束カバー
２７ａ…貫通孔
２７ｂ…端面
３１、５１、７１…反応容器
３１ａ、５１ａ、７１ａ…収容部
３１ｂ…上側マニホールド
３１ｃ…下側マニホールド
３１ｄ、５１ｂ…接続流路
３１ｅ…整流板
３６…水タンク
３６ａ…バルブ
５１ｃ、５１ｄ…空間 Reference Signs List 1, 2, 3, 4... Chemical heat storage reactor 5, 5a, 5b... Heat storage body 8... Chemical heat storage device 10... Heat storage material 11... Heat storage material for steam 12... Heat storage material for heat dissipation 20... Heat storage material restraining cover 21, 41 , 61... First channel 22, 42, 62... Second channel 22a, 42a... Inlet 22b, 42b... Outlet 23, 43, 63... Third channel 26... Steam heat storage material restricting cover 26a... Through hole 26b End surface 27 Thermal storage material restraining cover for heat dissipation 27a Through hole 27b End surface 31, 51, 71 Reaction vessel 31a, 51a, 71a Accommodating portion 31b Upper manifold 31c Lower manifold 31d, 51b Connection Flow path 31e Straightening plate 36 Water tank 36a Valve 51c, 51d Space

Claims (6)

化学蓄熱反応器であって、
水を加熱して蒸気を生成するための第１の蓄熱体と、
生成された蒸気が供給され熱を発生させるための第２の蓄熱体と、
前記第１の蓄熱体に隣接して配置され、前記第１の蓄熱体に沿って水を流通可能な第１の流路であって、前記第１の流路を流れる水を前記第１の蓄熱体に供給するとともに、前記第１の蓄熱体が発生する熱によって前記第１の流路を流れる水を加熱する前記第１の流路と、
前記第１の蓄熱体に隣接して配置され、前記第１の流路で加熱された水を前記第１の蓄熱体に沿って流通可能な第２の流路であって、前記第１の蓄熱体が発生する熱によって前記第２の流路を流れる水をさらに加熱し蒸気を生成させる前記第２の流路と、
前記第２の流路で生成された蒸気が流通可能に形成され、蒸気を前記第２の蓄熱体に供給する第３の流路と、
前記第１の流路と前記第２の流路との間に設けられ、前記第１の流路から流入してきた水の流通方向を折り返して、前記第２の流路に供給する折り返し流路と、を備える、
化学蓄熱反応器。 A chemical heat storage reactor,
a first heat store for heating water to produce steam;
a second heat store to which the generated steam is supplied to generate heat;
A first flow path arranged adjacent to the first heat storage element and capable of allowing water to flow along the first heat storage element, wherein the water flowing through the first flow path flows through the first heat storage element. a first flow path that supplies water to a heat storage body and heats water flowing through the first flow path with heat generated by the first heat storage body;
A second flow path that is arranged adjacent to the first heat storage element and allows the water heated in the first flow path to flow along the first heat storage element, the second flow path further heating the water flowing through the second flow path by the heat generated by the heat storage body to generate steam;
a third channel through which the steam generated in the second channel can flow and which supplies the steam to the second heat storage element;
A turning flow path provided between the first flow path and the second flow path to turn back the flow direction of the water flowing in from the first flow path and supply the water to the second flow path. and
Chemical heat storage reactor. 請求項１に記載の化学蓄熱反応器であって、
前記第２の流路は、
前記折り返し流路に接続する入口と、前記第３の流路に接続する出口とを備え、
前記折り返し流路が前記第２の流路の鉛直方向下方に位置しているとき、前記出口は、
前記入口より高い位置にある、
化学蓄熱反応器。 A chemical heat storage reactor according to claim 1,
The second flow path is
An inlet connected to the folded channel and an outlet connected to the third channel,
When the turn-around channel is positioned vertically below the second channel, the outlet is
located higher than the entrance,
Chemical heat storage reactor. 請求項１または請求項２に記載の化学蓄熱反応器であって、
前記第１の蓄熱体は、水と結合させると発熱する第１の蓄熱材と、前記第１の蓄熱材の外面を覆う円筒形状の第１の蓄熱材拘束カバーと、を備え、
前記第２の蓄熱体は、水と結合させると発熱する第２の蓄熱材と、前記第２の蓄熱材の外面を覆う円筒形状の第２の蓄熱材拘束カバーと、を備え、
前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとは、それぞれ水が流通可能な孔を有し、互いに隣接して接合されており、
前記第１の流路は、前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとの間に形成され、前記第１の蓄熱材拘束カバーのうち前記孔を有している部分と、前記第２の蓄熱材拘束カバーのうち前記孔を有していない部分に面しており、
前記第２の流路は、前記第１の蓄熱材拘束カバーと前記第２の蓄熱材拘束カバーとの間に形成され、前記第１の蓄熱材拘束カバーのうち前記孔を有していない部分と、前記第２の蓄熱材拘束カバーのうち前記孔を有していない部分に面しており、
前記第３の流路は、前記第２の蓄熱材拘束カバーのうち前記孔を有している部分に面している、
化学蓄熱反応器。 The chemical heat storage reactor according to claim 1 or claim 2,
The first heat storage material includes a first heat storage material that generates heat when combined with water, and a cylindrical first heat storage material restraining cover that covers the outer surface of the first heat storage material,
The second heat storage material includes a second heat storage material that generates heat when combined with water, and a cylindrical second heat storage material restraining cover that covers the outer surface of the second heat storage material,
The first heat storage material restricting cover and the second heat storage material restricting cover each have a hole through which water can flow, and are joined adjacent to each other,
The first flow path is formed between the first heat storage material restricting cover and the second heat storage material restricting cover, and the portion of the first heat storage material restricting cover having the hole. and a portion of the second heat storage material restraint cover that does not have the hole,
The second flow path is formed between the first heat storage material restricting cover and the second heat storage material restricting cover, and is a portion of the first heat storage material restricting cover that does not have the hole. and a portion of the second heat storage material restraint cover that does not have the hole,
The third flow path faces a portion of the second heat storage material restraint cover having the hole,
Chemical heat storage reactor. 請求項１から請求項３のいずれか一項に記載の化学蓄熱反応器は、さらに、
前記第１の蓄熱体と前記第２の蓄熱体とが内部に配置されているケースを備え、
前記第３の流路は、前記ケースの内壁に隣接している前記第２の蓄熱体と前記内壁との間に形成されている、
化学蓄熱反応器。 The chemical heat storage reactor according to any one of claims 1 to 3, further comprising:
A case in which the first heat storage element and the second heat storage element are arranged inside,
The third flow path is formed between the second heat storage element adjacent to the inner wall of the case and the inner wall,
Chemical heat storage reactor. 請求項１から請求項４のいずれか一項に記載の化学蓄熱反応器は、さらに、
複数の前記第１の流路に接続する入口マニホールドと、
前記入口マニホールド内に配置され、前記複数の第１の流路のそれぞれに供給される水を整流する整流板と、を備える、
化学蓄熱反応器。 The chemical heat storage reactor according to any one of claims 1 to 4, further comprising:
an inlet manifold connected to the plurality of first flow paths;
a rectifying plate that is arranged in the inlet manifold and rectifies water supplied to each of the plurality of first flow paths;
Chemical heat storage reactor. 化学蓄熱装置であって、
請求項１から請求項５のいずれか一項に記載の化学蓄熱反応器と、
前記化学蓄熱反応器の鉛直方向上方に配置され、水を前記第１の流路に供給する水タンクと、を備える、
化学蓄熱装置。 A chemical heat storage device,
a chemical heat storage reactor according to any one of claims 1 to 5;
a water tank arranged vertically above the chemical heat storage reactor and supplying water to the first flow path;
Chemical heat storage device.
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JP2012215324A (en) 2011-03-31 2012-11-08 Toyota Central R&D Labs Inc Chemical heat accumulator
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