JPH03267120A - Co2 treating plant - Google Patents
Co2 treating plantInfo
- Publication number
- JPH03267120A JPH03267120A JP2067044A JP6704490A JPH03267120A JP H03267120 A JPH03267120 A JP H03267120A JP 2067044 A JP2067044 A JP 2067044A JP 6704490 A JP6704490 A JP 6704490A JP H03267120 A JPH03267120 A JP H03267120A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- igneous rock
- immobilizing
- coz
- duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011435 rock Substances 0.000 claims abstract description 20
- 238000006555 catalytic reaction Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 22
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000003100 immobilizing effect Effects 0.000 abstract 4
- 239000000292 calcium oxide Substances 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は燃焼排ガスや空気中のＣＯｚを固定する手段と
その固定時に発生する熱を回収する手段を設けたＣＯ２
処理プラントに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a CO2 system that is equipped with means for fixing COz in combustion exhaust gas or air and a means for recovering heat generated during the fixation.
Regarding treatment plants.
化石燃料の燃焼エネルギを得ると同時に発生するＣＯ２
の処理は、これまで地球の大規模な自然の浄化作用に倭
ねできた。しかし、近年のエネルギ消費の増大等の問題
に伴い、その自然のメカニズムを崩すことが指摘され、
ＣＯｚ排出の抑制・削減や固定化などの対策が必要とな
っている。CO2 generated at the same time as obtaining energy from fossil fuel combustion
Until now, treatment has been limited to large-scale natural purification of the earth. However, due to problems such as increased energy consumption in recent years, it has been pointed out that this natural mechanism is being disrupted.
Measures such as controlling, reducing, and fixing COz emissions are needed.
ＣＯＺは最も安定な気体であり、蓄積することを考えれ
ば、ＣＯ２排出の抑制・削減は長期的な解決策とはなり
にくい。そのため、根本的な対策技術の一つとして境環
に悪影響を及ぼさないＣ０２の固定化が必要である。自
然界には炭酸カルシウムＣａＣ○３や炭酸マグネシウム
ＭｇＣ○３といった炭酸塩がほぼ無尽蔵に存在しており
、このような形でＣＯ２を固定化するのが望ましいと考
えられる。COZ is the most stable gas, and given that it accumulates, controlling and reducing CO2 emissions is unlikely to be a long-term solution. Therefore, as one of the fundamental countermeasure techniques, it is necessary to fix CO2 that does not have a negative impact on the environment. Carbonates such as calcium carbonate CaC○3 and magnesium carbonate MgC○3 exist in almost unlimited quantities in nature, and it is considered desirable to fix CO2 in this form.
従来、例えばＣＯｚをＣａＣＯ５に固定化するプロセス
はセメント工業で利用されている。反応的には
で表わされ、酸化カルシウムＣａ○がＣＯ２の固定化剤
となっている。しかし、そのＣａＯは原石である石灰石
中のＣａ Ｃ０３を焼成する反応、すなわち、逆反応（
＜−−−−−−）で得ているため、全体としてＣＯｚの
増減はなく、正味の固定化にはならない。この点に関連
する話は１例えば、丸善発行のカーク・オスマー化学大
辞典（１９８８年）の第７３１頁から第７３３頁におい
て記述されている。Conventionally, processes for fixing COz into CaCO5, for example, are used in the cement industry. Reactively, it is represented by , and calcium oxide Ca○ is a CO2 fixing agent. However, the CaO undergoes a reaction that burns Ca CO3 in the raw limestone, that is, a reverse reaction (
<------), there is no overall increase or decrease in COz, and there is no net fixation. A story related to this point is described, for example, on pages 731 to 733 of the Kirk-Othmer Encyclopedia of Chemistry (1988) published by Maruzen.
上記従来技術を含め、これまで正味のＣＯｚの固定化を
実用化した例はない。Including the above-mentioned conventional technology, there has been no example of practical use of net COz fixation.
本発明の目的は、環境上の問題がなく、しかも正味のＣ
Ｏｘ、固定化が可能なＣＯｚ処理プラントを提供するこ
とにある。The purpose of the present invention is to avoid environmental problems and to achieve a net carbon
The object of the present invention is to provide a COz treatment plant capable of fixing Ox and COz.
本発明の他の目的は、ＣＯ２固定化時に発生する熱エネ
ルギが利用可能なＣＯｘ処理プラントを提供することに
ある。Another object of the present invention is to provide a COx treatment plant that can utilize the thermal energy generated during CO2 fixation.
上記目的を達成するために、ＣＯ２の固定化剤であるＣ
ａＯの供給源として火成岩を用いた。また、Ｃｏ２固定
化時の発熱エネルギを利用するため、火成岩とＣｏ２が
接触反応する所を熱交換器構造にしたものである。In order to achieve the above purpose, C
Igneous rock was used as a source of aO. In addition, in order to utilize the exothermic energy during the fixation of Co2, a heat exchanger structure is provided at the place where the igneous rock and Co2 undergo a contact reaction.
〔作用〕
Ｃｏ２の固定化剤であるＣａＯの供給源とじて用いる火
成岩は、その種類によって異なるが約１０％のＣａＯを
含有している。使用可能なＣａ Ｏは、長期間空気に接
してＣａＣｏａが形成された表面を除き、岩石の内部に
存在する。そのため、Ｃｏ２を固定化する際は適当な大
きさに砕いた火成岩にＣＯｘを含む気体を接触させるこ
とによって、ＣＯｘを固定化する。[Operation] The igneous rock used as a source of CaO, which is a fixing agent for Co2, contains about 10% CaO, although it varies depending on the type. Usable Ca 2 O exists inside the rock, except on surfaces where CaCoa has formed due to long-term exposure to air. Therefore, when fixing Co2, COx is fixed by bringing a gas containing COx into contact with igneous rock crushed into an appropriate size.
また、ＣＯｚの固定化反応は次式（１）のように比較的
大きな発熱反応ゆえに１反応部を熱交換器構造にして発
熱エネルギを回収することができる。Furthermore, since the COz fixation reaction is a relatively large exothermic reaction as shown in the following equation (1), one reaction section can be configured as a heat exchanger to recover the exothermic energy.
（１） Ｃａ Ｏ＋ ＣＯｘ→Ｃａ Ｃ○ａ＋４２．５
ｋｃａＱ／ ｇ−ｍｏＵ（ｌａｔｍ、 ２５℃）
〔実施例〕
以下、本発明の一実施例を第１図により説明する。第１
図はＣＯ２処理プラントの基本構成図である。ＣＯｚの
固定化反応を生じさせる容器１内には固定化剤である火
成岩２が充てんされており。(1) Ca O+ COx→Ca C○a+42.5
kcaQ/g-moU (latm, 25°C) [Example] Hereinafter, an example of the present invention will be described with reference to FIG. 1st
The figure is a basic configuration diagram of a CO2 treatment plant. A container 1 that causes a COz fixation reaction is filled with igneous rock 2 as a fixation agent.
入口導管３と出口導管４が容器１に流体的に連結されて
いる。また、導管５に接続された送風機６は導管７を介
して、制御弁８に接続され、さらに、制御弁８を入口導
管３に接続されて、ＣＯ２処理プラントが構成される。An inlet conduit 3 and an outlet conduit 4 are fluidly connected to the container 1. Further, the blower 6 connected to the conduit 5 is connected to a control valve 8 via a conduit 7, and the control valve 8 is further connected to the inlet conduit 3 to constitute a CO2 treatment plant.
次に、本実施例の動作について説明する。ＣＯ２を含有
するガス（以下、Ｃｏ２含有ガスと略記する）は送風機
６によって導管５より導管７．制御弁８．入口導管３の
順に圧送され、容器１内へ供給される。ＣＯｚ含有ガス
が容器１内に充てんされた火成岩と接触すると、ＣＯｚ
含有ガス中のＣＯ２と火成岩中のＣａＯが式（１）に示
される固定化反応を起こす。この反応によってＣＯ２含
有ガス中の少なくとも一部のＣＯｚが火成岩に吸収され
るため、出口導管４より排出される被処理ガスは未処理
のＣＯ２含有ガスよりもＣＯｚ含有量が少ないガスとな
る。なお、容器１内の固定化反応量の制御は、制御弁８
による流量制御によって行われ１反応条件が適正化され
る。Next, the operation of this embodiment will be explained. Gas containing CO2 (hereinafter abbreviated as Co2-containing gas) is passed from conduit 5 to conduit 7. Control valve 8. It is then pumped through the inlet conduit 3 and supplied into the container 1 . When the COz-containing gas comes into contact with the igneous rock filled in the container 1, COz
CO2 in the contained gas and CaO in the igneous rock cause a fixation reaction shown by equation (1). As a result of this reaction, at least a portion of COz in the CO2-containing gas is absorbed by the igneous rock, so that the treated gas discharged from the outlet conduit 4 has a lower COz content than the untreated CO2-containing gas. The immobilized reaction amount in the container 1 is controlled by a control valve 8.
The reaction conditions are optimized by controlling the flow rate.
本実施例によれば、充てん物による流体の圧力損失を送
風機によりまかなえるので、流体の供給が円滑に行え、
確実な固定化反応を生じさせることができ、制御弁によ
り流量制御を行うので、発熱反応の制御が容易でかつプ
ラントの信頼性を向上することができる。According to this embodiment, the pressure loss of the fluid due to the filling material can be covered by the blower, so the fluid can be supplied smoothly.
Since a reliable immobilization reaction can be caused and the flow rate is controlled by a control valve, the exothermic reaction can be easily controlled and the reliability of the plant can be improved.
本発明の他の実施例を第２図により説明する。Another embodiment of the present invention will be described with reference to FIG.
本実施例は、第１図において、容器１を熱交換器構造と
したことに特徴がある。第１図と異なる部分を取り上げ
て構成を説明する。ＣＯｘの固定化反応を生じさせる容
器１内には、固定化剤である火成岩２の他に新たに熱交
換用導管９が設けられている。この熱交換用導管９はＣ
Ｏ２の固定化反応によって生じる発熱エネルギを熱交換
用導管９の中を流れる媒体に受は渡す働きを持つ。This embodiment is characterized in that the container 1 in FIG. 1 has a heat exchanger structure. The configuration will be explained by focusing on the parts that are different from FIG. 1. Inside the container 1 in which the COx fixation reaction occurs, a heat exchange conduit 9 is newly provided in addition to the igneous rock 2 that is the fixation agent. This heat exchange conduit 9 is C
The receiver has the function of transferring the exothermic energy generated by the O2 fixation reaction to the medium flowing in the heat exchange conduit 9.
本実施例によれば、熱交換用導管に流す媒体の種類と流
量により、容器の温度を一定に保持できプラントの信頼
性を向上することができる。また、プラント運転初期に
、固定化反応を促進させるために容器内を昇温する場合
は、熱交換用導管中に熱媒体を流して昇温することがで
きる。According to this embodiment, the temperature of the container can be maintained constant depending on the type and flow rate of the medium flowing through the heat exchange conduit, and the reliability of the plant can be improved. Further, when the temperature inside the container is raised in order to promote the immobilization reaction at the beginning of plant operation, the temperature can be raised by flowing a heat medium through the heat exchange conduit.
なお、以上の実施例において、火成岩中のＣａＯの他に
ＭｇＯなどの物質もＣＯｚの固定化に寄与し得る。In addition, in the above examples, substances such as MgO in addition to CaO in the igneous rock can also contribute to the fixation of COz.
本発明によれば、ＣＯ２を含む気体を火成岩と接触反応
させることにより、環境上の問題がなく、しかも、正味
のＣ○２固定化が可能なＣＯｘ処理プラントを提供する
ことができる。According to the present invention, by causing a gas containing CO2 to undergo a contact reaction with igneous rock, it is possible to provide a COx treatment plant that is free from environmental problems and is capable of net fixation of CO2.
また、ＣＯｘと火成岩との接触反応における発熱を回収
できる熱交換器の構造を設けたので、その発熱エネルギ
を有効利用できるＣ Ｏｚ処理プラントを提供すること
ができる。Furthermore, since a heat exchanger structure is provided that can recover heat generated in the contact reaction between COx and igneous rock, it is possible to provide a COz treatment plant that can effectively utilize the heat generated energy.
第１図および第２図は本発明の一実施例の説明図である
。
１・・・容器、２・・・火成岩、３・・・入口導管、４
・・・出口導管、６・・・送風機、８・・・制御弁、９
・・・熱交換用導管。FIGS. 1 and 2 are explanatory diagrams of one embodiment of the present invention. 1... Container, 2... Igneous rock, 3... Inlet conduit, 4
...Outlet conduit, 6...Blower, 8...Control valve, 9
...Heat exchange conduit.
Claims (1)
を特徴とするＣＯ＿２処理プラント。 ２、請求項１において、上記接触反応における発熱を回
収する熱交換器を設けたＣＯ＿２処理プラント。[Claims] 1. A CO_2 processing plant characterized by causing a gas containing CO_2 to undergo a catalytic reaction with igneous rock. 2. The CO_2 treatment plant according to claim 1, further comprising a heat exchanger for recovering heat generated in the catalytic reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067044A JPH03267120A (en) | 1990-03-19 | 1990-03-19 | Co2 treating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067044A JPH03267120A (en) | 1990-03-19 | 1990-03-19 | Co2 treating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03267120A true JPH03267120A (en) | 1991-11-28 |
Family
ID=13333453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2067044A Pending JPH03267120A (en) | 1990-03-19 | 1990-03-19 | Co2 treating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03267120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520894A (en) * | 1992-07-02 | 1996-05-28 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Process for removing carbon dioxide regeneratively from gas streams |
| JP2006090698A (en) * | 2004-08-23 | 2006-04-06 | Mitsubishi Materials Corp | Method for forming underground impermeable layer |
-
1990
- 1990-03-19 JP JP2067044A patent/JPH03267120A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520894A (en) * | 1992-07-02 | 1996-05-28 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Process for removing carbon dioxide regeneratively from gas streams |
| JP2006090698A (en) * | 2004-08-23 | 2006-04-06 | Mitsubishi Materials Corp | Method for forming underground impermeable layer |
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