JP7043806B2 - Carbon dioxide recovery / release device - Google Patents

Carbon dioxide recovery / release device Download PDF

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JP7043806B2
JP7043806B2 JP2017229593A JP2017229593A JP7043806B2 JP 7043806 B2 JP7043806 B2 JP 7043806B2 JP 2017229593 A JP2017229593 A JP 2017229593A JP 2017229593 A JP2017229593 A JP 2017229593A JP 7043806 B2 JP7043806 B2 JP 7043806B2
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carbon dioxide
valve
zeolite
outside air
storage container
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秀樹 古川
敏己 高城
澄雄 杉田
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NSK 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
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Description

本発明は、取り込んだ外気の二酸化炭素を濃縮し、二酸化炭素を高濃度で含有する気体を外部設備に放出する二酸化炭素の回収・放出装置に関する。 The present invention relates to a carbon dioxide recovery / release device that concentrates carbon dioxide in the taken-in outside air and releases a gas containing a high concentration of carbon dioxide to an external facility.

農業作物や園芸作物の栽培では、温度管理等の目的でビニールハウス等の温室で栽培することが行われている。しかしながら、温室は密封空間であり、日中は光合成のために室内の二酸化炭素が消費されて、作物の成長に悪影響を与えることが懸念されている。 In the cultivation of agricultural crops and horticultural crops, they are cultivated in greenhouses such as greenhouses for the purpose of temperature control and the like. However, the greenhouse is a closed space, and there is concern that carbon dioxide in the room will be consumed for photosynthesis during the day, which will adversely affect the growth of crops.

そこで、温室内に二酸化炭素ガス、あるいは二酸化炭素を高濃度で含有する気体を供給して室内の二酸化炭素濃度を高めることが考えられている。 Therefore, it is considered to supply carbon dioxide gas or a gas containing a high concentration of carbon dioxide into the greenhouse to increase the concentration of carbon dioxide in the room.

例えば、特許文献１では、ゼオライトの一種であるフェリエライトを収容した吸着塔に外気を送り、フェリエライトに二酸化炭素を吸着させた後、吸着塔内を減圧して二酸化炭素を放出させている。 For example, in Patent Document 1, outside air is sent to an adsorption tower containing ferrierite, which is a type of zeolite, carbon dioxide is adsorbed on the ferrierite, and then the inside of the adsorption tower is depressurized to release carbon dioxide.

特許文献２では、高濃度の二酸化炭素を含有する燃料排ガスをゼオライトに供給して吸着させ、その後で燃料排ガスよりも二酸化炭素濃度が低い外気をゼオライトに供給し、二酸化炭素の濃度差によってゼオライトから二酸化炭素を放出させている。 In Patent Document 2, fuel exhaust gas containing a high concentration of carbon dioxide is supplied to zeolite and adsorbed, and then outside air having a carbon dioxide concentration lower than that of fuel exhaust gas is supplied to zeolite, and the difference in carbon dioxide concentration causes the zeolite to be used. It releases carbon dioxide.

特許文献３では、ゼオライトでセル壁を形成した多数の流路を備えるハニカム構造体に外気を流通させるとともに、セル壁と接する、またはセル壁の交差点でセル壁内に埋めこまれた熱伝導性フィラメントにより、個々の流路を加熱・冷却して二酸化炭素を吸着・放出させている。 In Patent Document 3, outside air is circulated through a honeycomb structure having a large number of flow paths in which a cell wall is formed of zeolite, and thermal conductivity that is in contact with the cell wall or is embedded in the cell wall at an intersection of the cell walls. The filament heats and cools each flow path to adsorb and release carbon dioxide.

特許第６０９０８１０号公報Japanese Patent No. 6090810 特許第６１７９９１５号公報Japanese Patent No. 6179915 特許第５９０４４２０号公報Japanese Patent No. 5904420

しかながら、特許文献１のように吸着塔を減圧したり、特許文献２のように二酸化炭素の濃度差を利用してゼオライトから二酸化炭素を放出させる方法では、放出される二酸化炭素量が十分とは言えず、効率に難がある。また、ゼオライトから二酸化炭素を放出のための時間も長くなるという問題がある。 However, in the method of depressurizing the adsorption tower as in Patent Document 1 or releasing carbon dioxide from zeolite by utilizing the difference in carbon dioxide concentration as in Patent Document 2, the amount of carbon dioxide released is sufficient. However, there is a difficulty in efficiency. In addition, there is a problem that the time for releasing carbon dioxide from zeolite becomes long.

特許文献３では、ハニカム構造体の製造のためには、熱伝導性フィラメントをセル壁に接するように設けたり、熱伝導性フィラメントをセル壁の交差点に埋め込むのに精緻な成形が必要であり、ハニカム構造体が高価になる。 In Patent Document 3, in order to manufacture the honeycomb structure, it is necessary to provide the heat conductive filament so as to be in contact with the cell wall, or to embed the heat conductive filament at the intersection of the cell wall, which requires delicate molding. Honeycomb structure becomes expensive.

そこで本発明は、簡単な装置構成でありながらも、取り込んだ外気中の二酸化炭素を効率よく高め、二酸化炭素を高濃度で含有する気体を外部設備に供給することを目的とする。 Therefore, an object of the present invention is to efficiently increase the carbon dioxide in the taken-in outside air and supply a gas containing a high concentration of carbon dioxide to the external equipment, even though the device configuration is simple.

上記課題を解決するために本発明は、下記の二酸化炭素の回収・放出装置を提供する。
（１）取り込んだ外気の二酸化炭素を濃縮し、二酸化炭素を高濃度で含有する気体を外部設備に放出する二酸化炭素の回収・放出装置であって、
ゼオライトを収容した通気性容器と、前記通気性容器の周囲に設置されたヒータとを備える吸着ユニットを多段に積層した吸着部と、
前記吸着部を収容した主要部と、
前記外気を取り込み、前記吸着部に送る送風ユニットと、
前記主要部に接続する保管容器と、
前記主要部に取り付けた第１の開閉バルブと、
前記主要部と前記保管容器とを接続する配管に取り付けた第２の開閉バルブと、
前記保管容器と前記外部設備とを接続する配管に取り付けた第３の開閉バルブを備えるとともに、
前記第１の開閉バルブを開け、前記第２の開閉バルブ及び前記第３の開閉バルブを閉じた状態で前記送風ユニットにより前記外気を前記吸着部に所定時間送って前記ゼオライトに前記外気中の二酸化炭素を吸着させた後、前記送風ユニットの送風を停止して前記第１の開閉バルブを閉じ、
次いで、前記ヒータにより前記ゼオライトを加熱して前記ゼオライトから前記二酸化炭素を放出させた後、前記第２の開閉バルブを開けて前記主要部内の気体を前記保管容器へと送り、
その後、前記第３の開閉バルブを開けて前記保管容器内の前記気体を前記外部設備に放出することを特徴とする二酸化炭素の回収・放出装置。
（２）前記ゼオライトが、ペレット状成形物またはシート状成形物であることを特徴とする上記（１）記載の二酸化炭素の回収・放出装置。 In order to solve the above problems, the present invention provides the following carbon dioxide recovery / release device.
(1) A carbon dioxide recovery / release device that concentrates the carbon dioxide in the outside air that has been taken in and releases a gas containing a high concentration of carbon dioxide to external equipment.
A suction unit in which a suction unit including a breathable container containing zeolite and a heater installed around the breathable container is laminated in multiple stages,
The main part accommodating the suction part and the main part
A blower unit that takes in the outside air and sends it to the adsorption unit,
The storage container connected to the main part and
The first on-off valve attached to the main part and
A second on-off valve attached to the pipe connecting the main part and the storage container,
It is equipped with a third on-off valve attached to a pipe connecting the storage container and the external equipment, and is provided with a third on-off valve.
With the first on-off valve open and the second on-off valve and the third on-off valve closed, the outside air is sent to the adsorption portion for a predetermined time by the blower unit, and carbon dioxide in the outside air is sent to the zeolite. After adsorbing carbon, the blowing of the blowing unit is stopped and the first opening / closing valve is closed.
Next, the zeolite is heated by the heater to release the carbon dioxide from the zeolite, and then the second open / close valve is opened to send the gas in the main part to the storage container.
After that, the carbon dioxide recovery / release device, characterized in that the third open / close valve is opened and the gas in the storage container is discharged to the external equipment.
(2) The carbon dioxide recovery / release device according to (1) above, wherein the zeolite is a pellet-shaped molded product or a sheet-shaped molded product.

本発明の二酸化炭素の回収・放出装置では、吸着ユニットが通気性容器にゼオライトを収容し、吸着ユニットの周囲のヒータで加熱する構成としたため、特許文献３のような熱伝導性フィラメントを有するハニカム構造体に比べて、構造が簡素で作製も容易である。また、吸着部は複数の吸着ユニットで構成したため、吸着能力が低下したり、破損した吸着ユニットのみを交換するだけでよく、メンテナンスコストでも有利である。 In the carbon dioxide recovery / release device of the present invention, the adsorption unit accommodates zeolite in a breathable container and heats it with a heater around the adsorption unit. Therefore, a honeycomb having a thermally conductive filament as in Patent Document 3. Compared to the structure, the structure is simple and easy to manufacture. Further, since the suction unit is composed of a plurality of suction units, the suction capacity is lowered or only the damaged suction unit needs to be replaced, which is advantageous in terms of maintenance cost.

また、ゼオライトに吸着した二酸化炭素を放出させる方法も、ゼオライトを加熱するため、特許文献１のような圧力差や引用文献２のような濃度差を利用した方法よりも効率良く二酸化炭素を放出させることができる。 Further, the method of releasing carbon dioxide adsorbed on the zeolite also heats the zeolite, so that carbon dioxide is released more efficiently than the method using the pressure difference as in Patent Document 1 and the concentration difference as in Cited Document 2. be able to.

本発明の二酸化炭素の回収・放出装置の全体構成を示す概略図である。It is a schematic diagram which shows the whole structure of the carbon dioxide recovery / release apparatus of this invention. 図１の吸着ユニットの一例（ゼオライトペレット使用）を示す概略図であり、（Ａ）はその上面図、（Ｂ）は（Ａ）のＡＡ断面図である。It is a schematic diagram which shows an example (using a zeolite pellet) of the adsorption unit of FIG. 1, (A) is the top view, (B) is the AA sectional view of (A). 図１の吸着ユニットの他の例（ゼオライトシート使用）を示す概略図であり、（Ａ）はその上面図、（Ｂ）は（Ａ）のＡＡ断面図である。It is the schematic which shows the other example (using a zeolite sheet) of the adsorption unit of FIG. 1, (A) is the top view, (B) is the AA sectional view of (A). 吸着部に外気を送風している状態を示す説明図である。It is explanatory drawing which shows the state which the outside air is blown to the adsorption part. 吸着部から二酸化炭素を放出させている状態を示す説明図である。It is explanatory drawing which shows the state which carbon dioxide is released from the adsorption part. 主要部内の気体を保管容器に移送している状態を示す説明図である。It is explanatory drawing which shows the state which the gas in a main part is transferred to a storage container. 保管容器内の気体を外部設備に放出している状態を示す説明図である。It is explanatory drawing which shows the state which the gas in a storage container is released to the external equipment.

以下、本発明に関して図面を参照して詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.

図１は、本発明の二酸化炭素の回収・放出装置の全体構成を示す概略図である。図示されるように、内部に吸着部１を収容した主要部２と、吸着部１に外気を供給するための送風ユニット３と、主要部２に接続する保管容器４とを備える。また、保管容器４には外部設備が接続している。 FIG. 1 is a schematic view showing the overall configuration of the carbon dioxide recovery / release device of the present invention. As shown in the figure, it includes a main unit 2 that houses the adsorption unit 1, a blower unit 3 for supplying outside air to the adsorption unit 1, and a storage container 4 that is connected to the main unit 2. Further, an external facility is connected to the storage container 4.

吸着部１は、ゼオライト１０を収容した通気性容器１１と、通気性容器１１の周囲に設置されたヒータ１２とを備える吸着ユニット１ａを、多段に積層したものである。また、吸着部１では、複数の吸着ユニット１ａが、積層した状態で一体に漏斗状の外枠５に収容されており、外枠５の外側に、吸着ユニット１ａごとにヒータ１２が設けられている。 The adsorption unit 1 is a multi-stage stack of an adsorption unit 1a including a breathable container 11 containing a zeolite 10 and a heater 12 installed around the breathable container 11. Further, in the suction unit 1, a plurality of suction units 1a are integrally housed in a funnel-shaped outer frame 5 in a stacked state, and a heater 12 is provided for each suction unit 1a on the outside of the outer frame 5. There is.

吸着ユニット１ａにおいて、通気性容器１１は、金属製のメッシュ籠や、金属製の篩等とすることができる。また、ゼオライト１０は、天然ゼオライト、合成ゼオライトの何れでもよい。また、ゼオライト１０は、図２に示すようにゼオライトペレット１０ａを、適度に隙間を開けて通気性容器１１に敷き詰めてもよいし、図３に示すようにゼオライトシート１０ｂを折り畳んで通気性容器１１に収容してもよい。尚、ゼオライトシート１０ｂは、ゼオライト１０をシート状に成形したものであり、通気性を有する。 In the suction unit 1a, the breathable container 11 can be a metal mesh cage, a metal sieve, or the like. Further, the zeolite 10 may be either a natural zeolite or a synthetic zeolite. Further, as the zeolite 10, the zeolite pellets 10a may be spread in the breathable container 11 with an appropriate gap as shown in FIG. 2, or the zeolite sheet 10b may be folded as shown in FIG. 3 to spread the zeolite pellets 11 in the breathable container 11. May be accommodated in. The zeolite sheet 10b is formed by molding the zeolite 10 into a sheet shape and has air permeability.

尚、後述するように、吸着ユニット１ａには送風ユニット３からの風圧が作用するため、ゼオライトシート１０ｂを用いる場合は、折り畳んだ際の弾性回復力で通気性容器１１の側壁を押圧するように、外方に拡大する折り畳み形状にすることが好ましい。あるいは、外気の流通を阻害しないような大きさの重石を載置してもよい。 As will be described later, since the wind pressure from the blower unit 3 acts on the suction unit 1a, when the zeolite sheet 10b is used, the side wall of the breathable container 11 is pressed by the elastic recovery force when folded. , It is preferable to have a foldable shape that expands outward. Alternatively, a weight stone having a size that does not obstruct the flow of outside air may be placed.

上記のように、吸着部１を吸着ユニット１ａの多段構成にしたことにより、吸着能力が低下した、もしくは破損した吸着ユニット１ａのみを交換すればよいため、吸着部１が単一で、全部を交換しなければならない場合に比べて、メンテナンス費用を軽減することができる。 As described above, since the suction unit 1 has a multi-stage configuration of the suction unit 1a, only the suction unit 1a whose suction capacity has decreased or is damaged needs to be replaced. Maintenance costs can be reduced compared to when replacement is required.

主要部２は気密容器であり、第１の開閉バルブ２０を備える。第１の開閉バルブ２０は、例えば図示されるように天井面２ａの吸着部１の直上となる位置に設けることができる。また、底面２ｂには、保管容器４に連結する配管３０を備えており、配管３０の途中に第２の開閉バルブ２１を備えている。 The main part 2 is an airtight container and includes a first opening / closing valve 20. The first on-off valve 20 can be provided at a position directly above the suction portion 1 on the ceiling surface 2a, for example, as shown in the figure. Further, the bottom surface 2b is provided with a pipe 30 connected to the storage container 4, and a second on-off valve 21 is provided in the middle of the pipe 30.

保管容器４は、気密容器であり、外部設備に連結する配管４０の途中に、第３の開閉バルブ２２を備えている。 The storage container 4 is an airtight container, and is provided with a third on-off valve 22 in the middle of the pipe 40 connected to the external equipment.

尚、外部設備としては、二酸化炭素濃度の高い空気を必要とするものであれば制限はないが、例えば農業作物や園芸作物を栽培しているビニールハウスを挙げることができる。 The external equipment is not limited as long as it requires air having a high carbon dioxide concentration, and examples thereof include vinyl greenhouses for cultivating agricultural crops and horticultural crops.

上記の回収・放出装置を用いて外気から二酸化炭素を回収し、放出するには以下の操作を行う。先ず、図４に示すように、第２の開閉バルブ２１を閉じるとともに、第１の開閉バルブ２０を開放状態にする。外気及び装置内の気流を図中に白抜きの矢印で示すが（以降の図面でも同様）、送風ユニット３を稼働させて外気を取り込み、外気を外枠５の底部から吸着部１へと送る。上記のように各吸着ユニット１ａは、隙間を開けてゼオライトペレット１０ａを通気性容器１１に敷き詰めたり、ゼオライトシート１０ｂを折り畳んで通気性容器１１に収容して構成されているため、吸着部１に送られた外気は、最下段の吸着ユニット１ａ（１）からその上の吸着ユニット１ａへと次々に通過して上昇し、最上段の吸着ユニット１ａ（ｎ）から第１の開閉バルブ２０を通じて主要部２の外部に放出される。その間に、空気中の二酸化炭素が各吸着ユニット１ａのゼオライト１０（ゼオライトペレット１０ａやゼオライトシート１０ｂ）に吸着される。 To recover and release carbon dioxide from the outside air using the above recovery / release device, perform the following operations. First, as shown in FIG. 4, the second on-off valve 21 is closed and the first on-off valve 20 is opened. The outside air and the airflow inside the device are indicated by white arrows in the figure (the same applies to the following drawings), but the ventilation unit 3 is operated to take in the outside air and send the outside air from the bottom of the outer frame 5 to the suction part 1. .. As described above, each adsorption unit 1a is configured such that the zeolite pellets 10a are spread in the breathable container 11 with a gap, or the zeolite sheet 10b is folded and housed in the breathable container 11. The sent outside air passes from the lowermost suction unit 1a (1) to the upper suction unit 1a one after another and rises, and is mainly from the uppermost suction unit 1a (n) through the first open / close valve 20. It is released to the outside of the part 2. During that time, carbon dioxide in the air is adsorbed on the zeolite 10 (zeolite pellets 10a and zeolite sheet 10b) of each adsorption unit 1a.

送風ユニット３による外気の送風を所定時間行い、ある程度の量の二酸化炭素をゼオライト１０に吸着させた後に送風ユニット３を停止して、主要部２の第１のバルブ２０を閉じる。その後、ヒータ１２を通電して各吸着ユニット１ａのゼオライト１０を加熱する。加熱温度は、６０～１８０℃程度、加熱時間は５～２０分程度がそれぞれ適当である。この加熱により、ゼオライト１０に吸着していた二酸化炭素がゼオライト１０から放出され、ゼオライト１０の周辺に滞留する。 The outside air is blown by the blower unit 3 for a predetermined time, a certain amount of carbon dioxide is adsorbed on the zeolite 10, the blower unit 3 is stopped, and the first valve 20 of the main part 2 is closed. After that, the heater 12 is energized to heat the zeolite 10 of each adsorption unit 1a. It is appropriate that the heating temperature is about 60 to 180 ° C. and the heating time is about 5 to 20 minutes. By this heating, carbon dioxide adsorbed on the zeolite 10 is released from the zeolite 10 and stays around the zeolite 10.

次いで、図５に示すように、送風ユニット３を数秒～数分程度稼働させて吸着部１に外気を送り、ゼオライト１０の周辺に滞留している二酸化炭素を外気とともに吸着部１の外部に送り出す。そして、二酸化炭素と外気との混合ガスが吸着部１と主要部２との間の空間を通り、主要部２の底部に充満する。この二酸化炭素と外気との混合ガスは、送り込まれた外気に含まれている二酸化炭素に、ゼオライト１０から放出された二酸化炭素を加味したものであり、外気よりも高濃度で二酸化炭素を含んでいる。 Next, as shown in FIG. 5, the blower unit 3 is operated for several seconds to several minutes to send outside air to the adsorption unit 1, and carbon dioxide staying around the zeolite 10 is sent out together with the outside air to the outside of the adsorption unit 1. .. Then, the mixed gas of carbon dioxide and the outside air passes through the space between the adsorption portion 1 and the main portion 2 and fills the bottom portion of the main portion 2. This mixed gas of carbon dioxide and the outside air is a mixture of the carbon dioxide contained in the sent outside air and the carbon dioxide released from the zeolite 10, and contains carbon dioxide at a higher concentration than the outside air. There is.

次いで、図６に示すように、第２の開閉バルブ２１を開け、混合ガスを保管容器４に移送する。保管容器４には二酸化炭素用の濃度計（図示せず）が付設されており、二酸化炭素濃度が所定の濃度閾値になるまで上記の吸着・放出工程を繰り返す。濃度閾値としては、例えば農業作物や園芸作物の成長促進に適した１０００～２０００ｐｐｍが適当である。即ち、外気の二酸化炭素濃度は４００ｐｐｍ程度であり、これにゼオライト１０から放出された二酸化炭素を加味して保管容器４における二酸化炭素濃度が１０００～２０００ｐｐｍになるまで吸着・放出工程を繰り返し行う。 Then, as shown in FIG. 6, the second on-off valve 21 is opened and the mixed gas is transferred to the storage container 4. A densitometer for carbon dioxide (not shown) is attached to the storage container 4, and the above adsorption / release steps are repeated until the carbon dioxide concentration reaches a predetermined concentration threshold value. As the concentration threshold, for example, 1000 to 2000 ppm suitable for promoting the growth of agricultural crops and horticultural crops is appropriate. That is, the carbon dioxide concentration in the outside air is about 400 ppm, and the carbon dioxide released from the zeolite 10 is added to the carbon dioxide concentration, and the adsorption / release steps are repeated until the carbon dioxide concentration in the storage container 4 reaches 1000 to 2000 ppm.

次いで、保管容器４における二酸化炭素濃度が濃度閾値に達した後、図７に示すように、第３の開閉バルブ２２を開き、送風ユニット３から外気を送り、保管容器４に溜まっている混合ガスを外部設備に送り出す。このとき、保管容器４の二酸化炭素濃度が外気の二酸化炭素濃度と同レベルになるまで送風を続け、保管容器４の内部の混合ガスを全て外部設備に送り出すことが好ましい。所要時間としては、数分程度である。 Next, after the carbon dioxide concentration in the storage container 4 reaches the concentration threshold value, as shown in FIG. 7, the third open / close valve 22 is opened, outside air is sent from the blower unit 3, and the mixed gas stored in the storage container 4 is stored. Is sent to external equipment. At this time, it is preferable to continue blowing air until the carbon dioxide concentration of the storage container 4 becomes the same level as the carbon dioxide concentration of the outside air, and send out all the mixed gas inside the storage container 4 to the external equipment. The time required is about a few minutes.

上記の一連の操作を行うことで、外気から二酸化炭素を回収し、二酸化炭素を高濃度で含有する混合ガスを外部設備へと放出させることが可能になる。 By performing the above series of operations, it becomes possible to recover carbon dioxide from the outside air and release the mixed gas containing a high concentration of carbon dioxide to the external equipment.

尚、上記では保管容器４と外部設備とを直結していたが、保管容器４の混合ガスを他の容器に一旦保管し、他の容器から外部設備に混合ガスを供給してもよい。 In the above, the storage container 4 and the external equipment are directly connected, but the mixed gas of the storage container 4 may be temporarily stored in another container and the mixed gas may be supplied from the other container to the external equipment.

１ 吸着部
１ａ 吸着ユニット
２ 主要部
３ 送風ユニット
４ 保管容器
１０ ゼオライト
１１ 通気性容器
１２ ヒータ
２０ 第１の開閉バルブ
２１ 第２の開閉バルブ
２２ 第３の開閉バルブ 1 Suction part 1a Suction unit 2 Main part 3 Blower unit 4 Storage container 10 Zeolite 11 Breathable container 12 Heater 20 First open / close valve 21 Second open / close valve 22 Third open / close valve

Claims (2)

取り込んだ外気の二酸化炭素を濃縮し、二酸化炭素を前記外気よりも高濃度で含有する気体を外部設備に放出する二酸化炭素の回収・放出装置であって、
シート状成形物であって通気性を有するゼオライトシートを折り畳んで収容した通気性容器と、前記通気性容器の周囲に設置されたヒータとを備える吸着ユニットを多段に積層した吸着部と、
前記吸着部を収容した主要部と、
前記外気を取り込み、前記吸着部に送る送風ユニットと、
前記主要部に接続する保管容器と、
前記主要部に取り付けた第１の開閉バルブと、
前記主要部と前記保管容器とを接続する配管に取り付けた第２の開閉バルブと、
前記保管容器と前記外部設備とを接続する配管に取り付けた第３の開閉バルブを備えるとともに、
前記第１の開閉バルブを開け、前記第２の開閉バルブ及び前記第３の開閉バルブを閉じた状態で前記送風ユニットにより前記外気を前記吸着部に所定時間送って前記ゼオライトシートに前記外気中の二酸化炭素を吸着させた後、前記送風ユニットの送風を停止して前記第１の開閉バルブを閉じ、
次いで、前記ヒータにより前記ゼオライトシートを加熱して前記ゼオライトシートから前記二酸化炭素を放出させた後、前記第２の開閉バルブを開けて前記主要部内の気体を前記保管容器へと送り、
その後、前記第３の開閉バルブを開けて前記保管容器内の前記気体を前記外部設備に放出するものであり、
前記ゼオライトシートは、折り畳んだ際の弾性回復力で前記通気性容器の側壁を押圧するように、外方に拡大する折り畳み形状を有することを特徴とする二酸化炭素の回収・放出装置。 It is a carbon dioxide recovery / release device that concentrates the carbon dioxide of the taken-in outside air and releases the gas containing carbon dioxide at a higher concentration than the outside air to the external equipment.
A suction unit in which a breathable container in which a breathable zeolite sheet , which is a sheet-shaped molded product, is folded and housed, and a suction unit having a heater installed around the breathable container are laminated in multiple stages, and a suction section.
The main part accommodating the suction part and the main part
A blower unit that takes in the outside air and sends it to the adsorption unit,
The storage container connected to the main part and
The first on-off valve attached to the main part and
A second on-off valve attached to the pipe connecting the main part and the storage container,
It is equipped with a third on-off valve attached to a pipe connecting the storage container and the external equipment, and is provided with a third on-off valve.
With the first on-off valve open and the second on-off valve and the third on-off valve closed, the outside air is sent to the adsorption portion for a predetermined time by the blower unit to the zeolite sheet in the outside air. After adsorbing carbon dioxide, the blowing of the blowing unit is stopped and the first opening / closing valve is closed.
Next, the zeolite sheet is heated by the heater to release the carbon dioxide from the zeolite sheet , and then the second open / close valve is opened to send the gas in the main part to the storage container.
After that, the third on-off valve is opened to release the gas in the storage container to the external equipment .
The zeolite sheet is a carbon dioxide recovery / release device having a foldable shape that expands outward so as to press the side wall of the breathable container with an elastic recovery force when folded . 前記ゼオライトシートに重石が載置されていることを特徴とする請求項１記載の二酸化炭素の回収・放出装置。The carbon dioxide recovery / release device according to claim 1, wherein a weight stone is placed on the zeolite sheet.
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