JPH07265688A - Method for fixing co2 - Google Patents
Method for fixing co2Info
- Publication number
- JPH07265688A JPH07265688A JP6062360A JP6236094A JPH07265688A JP H07265688 A JPH07265688 A JP H07265688A JP 6062360 A JP6062360 A JP 6062360A JP 6236094 A JP6236094 A JP 6236094A JP H07265688 A JPH07265688 A JP H07265688A
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- JP
- Japan
- Prior art keywords
- water
- ions
- mgco
- caco
- industrial waste
- 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
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Carbon And Carbon Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はＣＯ2 の固定化方法に係
り、特に産業廃棄物を利用したＣＯ2 の固定化方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CO 2 immobilization method, and more particularly to a CO 2 immobilization method using industrial waste.
【０００２】[0002]
【従来の技術】各種産業分野で排出される排ガス中のＣ
Ｏ2 は、地球の温暖化現象への影響が懸念されているこ
とから、大気中のＣＯ2 の低減について検討が進められ
ている。2. Description of the Related Art C in exhaust gas emitted from various industrial fields
Since it is feared that O 2 will affect the global warming phenomenon, studies are underway to reduce CO 2 in the atmosphere.
【０００３】排ガスや大気中のＣＯ2 を低減する方法と
して、特開平３−２６７１２０号公報には、ＣＯ2 と火
成岩の粉砕物とを接触させ、火成岩中のＣａＯ成分とＣ
Ｏ2とを反応させてＣＯ2 を固定化する方法が記載され
ている。As a method of reducing exhaust gas and CO 2 in the atmosphere, JP-A-3-267120 discloses that CO 2 and crushed igneous rock are brought into contact with each other, and the CaO component in the igneous rock and C
A method of fixing CO 2 by reacting with O 2 is described.
【０００４】[0004]
【発明が解決しようとする課題】このような固体状の火
成岩を用いた方法では、ＣａＯの反応性が乏しく、ＣＯ
2 は殆ど固定化されない。また、火成岩の掘出、粉砕コ
ストも著しく嵩む。In the method using such a solid igneous rock, the reactivity of CaO is poor and CO
2 is hardly fixed. In addition, the cost of digging and crushing igneous rocks increases significantly.
【０００５】[0005]
【課題を解決するための手段】請求項１のＣＯ2 の固定
化方法は、ＣａＯ及び／又はＭｇＯを含む産業廃棄物を
水と接触させてＣａイオン及び／又はＭｇイオンを水中
に溶出させ、この水とＣＯ2 ガスとを接触させてＣａＣ
Ｏ3 及び／又はＭｇＣＯ3 を生成させることによりＣＯ
2 を固定化するようにしたことを特徴とするものであ
る。A method for immobilizing CO 2 according to claim 1 is to contact an industrial waste containing CaO and / or MgO with water to elute Ca ions and / or Mg ions into water, By contacting this water with CO 2 gas, CaC
CO by producing O 3 and / or MgCO 3
It is characterized in that 2 is fixed.
【０００６】請求項２のＣＯ2 の固定化方法は、請求項
１において、生成したＣａＣＯ3 及び／又はＭｇＣＯ3
をオートクレーブ反応を利用して固化させることを特徴
とするものである。The method of immobilizing CO 2 according to claim 2 is the method of immobilizing CaCO 3 and / or MgCO 3 produced according to claim 1.
Is solidified by utilizing an autoclave reaction.
【０００７】本発明において、ＣａＯ及び／又はＭｇＯ
を含む産業廃棄物としては、スラグ、セメント・コンク
リート廃材、ガラス廃材、石炭灰、汚泥焼却灰、釉汚
泥、炭酸マグネシウム系又はドロマイト系建材の廃材な
どが挙げられる。In the present invention, CaO and / or MgO
Examples of the industrial waste containing slag include slag, cement / concrete waste material, glass waste material, coal ash, sludge incineration ash, glaze sludge, magnesium carbonate-based or dolomite-based building material waste materials, and the like.
【０００８】この産業廃棄物と接触させる水は、通常の
水（例えば、河川水、水道水、井戸水など）であっても
良く、海水であっても良い。The water to be brought into contact with this industrial waste may be ordinary water (for example, river water, tap water, well water, etc.) or seawater.
【０００９】Ｃａイオン及び／又はＭｇイオンを含む水
とＣＯ2 とを接触させることにより生成したＣａＣＯ3
及び／又はＭｇＣＯ3 は、沈降、濾過などによって液か
ら分離する。CaCO 3 produced by contacting CO 2 with water containing Ca ions and / or Mg ions
And / or MgCO 3 is separated from the liquid by sedimentation, filtration and the like.
【００１０】このＣａＣＯ3 及び／又はＭｇＣＯ3 は、
そのまま工業原料として利用しても良く、廃棄しても良
い。This CaCO 3 and / or MgCO 3 is
It may be used as it is as an industrial raw material or may be discarded.
【００１１】また、必要に応じてシリカ系物質、あるい
はＣａＯ，Ｃａ（ＯＨ）2 ，ＭｇＯ，Ｍｇ（ＯＨ）2 ス
ラグ又はセメントコンクリートを混合した後、オートク
レーブ反応を利用して固化させることもできる。なお、
ＣａＣＯ3 及び／又はＭｇＣＯ3 やシリカ系物質の溶解
度を高める物質（以下、「溶解度増大物質」ということ
がある。）を混合することもできる。If necessary, a silica-based material, CaO, Ca (OH) 2 , MgO, Mg (OH) 2 slag or cement concrete may be mixed and then solidified by utilizing an autoclave reaction. In addition,
It is also possible to mix CaCO 3 and / or MgCO 3 or a substance that enhances the solubility of the silica-based substance (hereinafter, may be referred to as “solubility-increasing substance”).
【００１２】シリカ系物質としては、非晶質ＳｉＯ2 ，
結晶質ＳｉＯ2 の他、ケイ砂，キラ微砂，ケイ藻土，粘
土，シリカヒューム，ホワイトカーボン，タイル屑，ガ
ラス屑，スラグ，セメント・コンクリート廃材，石炭
灰，汚泥，釉汚泥，汚泥焼却灰，Ｃａ分を抽出後の産業
廃棄物（例えばスラグ、セメント・コンクリート廃材、
釉汚泥、石炭灰、汚泥焼却灰、ガラス屑からＣａ分を抽
出したもの）等を用いることができる。As the silica-based material, amorphous SiO 2 ,
In addition to crystalline SiO 2 , silica sand, fine sand, diatomaceous earth, clay, silica fume, white carbon, tile scrap, glass scrap, slag, cement / concrete waste material, coal ash, sludge, glaze sludge, sludge incineration ash , Industrial waste after extraction of Ca (eg slag, cement / concrete waste,
It is possible to use glaze sludge, coal ash, sludge incineration ash, glass scrap extracted from Ca), and the like.
【００１３】溶解度増大物質としては、ＬｉＯＨ，Ｎａ
ＯＨ，ＫＯＨ，ＮＨ4 ＯＨ，Ｌｉ2ＣＯ3 ，Ｎａ2 ＣＯ3
，Ｋ2 ＣＯ3 ，（ＮＨ4 ）2 ＣＯ3 ，ＬｉＨＣＯ3 ，
ＮａＨＣＯ3 ，ＫＨＣＯ3 ，ＮＨ4 ＨＣＯ3 ，ＬｉＮＯ
3 ，ＮａＮＯ3 ，ＫＮＯ3 ，ＮＨ4 ＮＯ3 ，Ｃａ（ＮＯ
3 ）2 ，ＬｉＦ，ＮａＦ，ＫＦ，ＮＨ4 Ｆ，ＬｉＣｌ，
ＮａＣｌ，ＫＣｌ，ＮＨ4 Ｃｌ，ＬｉＢｒ，ＮａＢｒ，
ＫＢｒ，ＮＨ4 Ｂｒなどの水酸化アルカリ，アルカリ
塩，炭酸アルカリ，炭酸水素アルカリ，ハロゲン化アル
カリ等アルカリ系物質ならびにアンモニウム系物質が好
適である。As the solubility-increasing substances, LiOH, Na
OH, KOH, NH 4 OH, Li 2 CO 3 , Na 2 CO 3
, K 2 CO 3 , (NH 4 ) 2 CO 3 , LiHCO 3 ,
NaHCO 3 , KHCO 3 , NH 4 HCO 3 , LiNO
3 , NaNO 3 , KNO 3 , NH 4 NO 3 , Ca (NO
3 ) 2 , LiF, NaF, KF, NH 4 F, LiCl,
NaCl, KCl, NH 4 Cl, LiBr, NaBr,
Alkali hydroxides such as KBr and NH 4 Br, alkali salts, alkali carbonates, alkali hydrogencarbonates, alkali halides and other alkali-based substances and ammonium-based substances are preferred.
【００１４】ＣａＣＯ3 及び／又はＭｇＣＯ3 又はこれ
らに上記添加物を混合して得られる固化原料は、プレス
成形、鋳込成形、押出成形、流し込み成形等の成形法に
より所望の形状に成形した後、オートクレーブ処理す
る。その際、前記溶解度増大物質を水などの溶媒に溶解
又は希釈させて、オートクレーブ溶液として用いても良
い。なお、固化原料は特に成形を行なわず、そのままオ
ートクレーブ処理したのち、成形しさらにオートクレー
ブ処理しても良い。CaCO 3 and / or MgCO 3 or a solidified raw material obtained by mixing these with the above-mentioned additives, is molded into a desired shape by a molding method such as press molding, cast molding, extrusion molding or cast molding. , Autoclave. At that time, the solubility increasing substance may be dissolved or diluted in a solvent such as water and used as an autoclave solution. Incidentally, the solidified raw material may be autoclaved as it is without being molded, then molded and further autoclaved.
【００１５】オートクレーブ処理は、１００〜３００
℃、特に１５０〜２５０℃程度の飽和蒸気圧（４０ｋｇ
ｆ／ｃｍ2 以下）下という比較的緩やかな条件で行なう
ことができ、その処理時間は通常の場合、２〜２０時
間、特に５〜１０時間程度とされる。The autoclave treatment is 100 to 300
Saturated vapor pressure (40 kg
f / cm 2 or less), which is a relatively mild condition, and the treatment time is usually 2 to 20 hours, particularly 5 to 10 hours.
【００１６】得られた固化体は、必要に応じて適当な条
件で乾燥した後、各種建設・土木材料等として利用され
る。The solidified product thus obtained is dried under appropriate conditions, if necessary, and then used as various construction and civil engineering materials.
【００１７】[0017]
【作用】本発明によると、産業廃棄物からＣａイオン及
び／又はＭｇイオンを溶出させ、これとＣＯ2 ガスとを
反応させてＣａＣＯ3 及び／又はＭｇＣＯ3 を析出させ
る。従って、材料コストが安価である。According to the present invention, Ca ions and / or Mg ions are eluted from the industrial waste, and this is reacted with CO 2 gas to precipitate CaCO 3 and / or MgCO 3 . Therefore, the material cost is low.
【００１８】このＣａＣＯ3 及び／又はＭｇＣＯ3 を固
化させることにより、ＣａＣＯ3 及び／又はＭｇＣＯ3
の有効利用を図ったり、取り扱い性を良好にすることが
できる。By solidifying this CaCO 3 and / or MgCO 3 , CaCO 3 and / or MgCO 3
Can be effectively used and the handleability can be improved.
【００１９】[0019]
実施例１ スラグ１Ｋｇを粒径０．１ｍｍ以下に粉砕し、１０Ｋｇ
の水中に投じた。１Ｈｒ撹拌した後、濾過し、水と沈殿
物とを分離した。この水に燃焼排ガス（ＣＯ2濃度１０
％）を５００ｍｌ／ｍｉｎの割合で通気した。その結
果、水は白濁した。Example 1 1 kg of slag was crushed to a particle size of 0.1 mm or less and 10 kg
Thrown into the water. After stirring for 1 hr, the mixture was filtered to separate water from the precipitate. Combustion exhaust gas (CO 2 concentration 10
%) Was aerated at a rate of 500 ml / min. As a result, the water became cloudy.
【００２０】この水を遠心分離することにより、合計１
７ｇ（乾燥重量）の沈殿物を採取した。この沈殿物はＣ
ａＣＯ3 を主成分とするものであった。By centrifuging this water, a total of 1
A 7 g (dry weight) precipitate was collected. This precipitate is C
It was mainly composed of aCO 3 .
【００２１】この結果、合計で８ｇのＣＯ2 を固定化で
きたことが認められた。As a result, it was confirmed that a total of 8 g of CO 2 could be immobilized.
【００２２】実施例２ 実施例１と同様にして得た含水率３０％の沈殿物を４０
×１０×１０ｍｍに脱水成形後、オートクレーブ中にて
２５０℃×５Ｈｒ処理した。これにより、曲げ強度３．
０ＭＰａの固化体が得られた。Example 2 40% of a precipitate having a water content of 30% obtained in the same manner as in Example 1 was used.
After dehydration molding to × 10 × 10 mm, 250 ° C. × 5 Hr treatment was performed in an autoclave. This results in a bending strength of 3.
A solidified product of 0 MPa was obtained.
【００２３】実施例３〜４ 実施例１と同様にして得られた含水率３０％の沈殿物１
００重量部に対し、次のものを添加したこと以外は実施
例２と同様にして固化処理し、次の通りの曲げ強度の成
形体を得た。Examples 3 to 4 Precipitate 1 having a water content of 30% obtained in the same manner as in Example 1
A solidification treatment was performed in the same manner as in Example 2 except that the following components were added to 00 parts by weight to obtain a molded product having the following bending strength.
【００２４】添加物 実施例３ Ｃａ（ＯＨ）2 ５重量部及び結晶質シリカ５
重量部 実施例４ Ｃａ（ＯＨ）2 ５重量部、結晶質シリカ５重
量部及びＮａＯＨ ５重量部強 度（ＭＰａ） 実施例３ ６．２ 実施例４ ７．５ Additive Example 3 5 parts by weight of Ca (OH) 2 and 5 of crystalline silica
Parts by weight Example 4 5 parts by weight of Ca (OH) 2, 5 parts by weight of crystalline silica and 5 parts by weight of NaOH strength (MPa) Example 3 6.2 Example 4 7.5
【００２５】[0025]
【発明の効果】以上の通り、本発明によると、産業廃棄
物を利用してＣＯ2 を固定することができる。また、生
成したＣａＣＯ3 及び／又はＭｇＣＯ3 を固化させるこ
ともできる。As described above, according to the present invention, CO 2 can be fixed using industrial waste. Further, the produced CaCO 3 and / or MgCO 3 can be solidified.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 犬飼 恵一 愛知県名古屋市緑区万場山１−1208 フレ グランス万場山Ａ−202 (72)発明者 樹神 真 愛知県知多市梅が丘１−285 ロイヤルハ イツＢ−203 (72)発明者 石田 秀輝 愛知県半田市堀崎町２−17 コープ野村半 田３棟 604号 (72)発明者 後藤 泰男 愛知県半田市仲田町１−38 (72)発明者 永田 達也 愛知県知多郡武豊町砂川１−29 (72)発明者 山本 剛之 愛知県常滑市字古道東割29−13 第７若竹 寮 (72)発明者 前浪 洋輝 愛知県常滑市港町１−29 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiichi Inukai 1-1208 Manbayama, Midori-ku, Nagoya-shi, Aichi Fregulance Manbayama A-202 (72) Inventor, Magami 1-285 Umegaoka, Chita-shi, Aichi Prefecture Royal Heights B-203 (72) Inventor Hideteru Ishida 2-17 Horizaki-cho, Handa-shi, Aichi Corp. Nomura Hanta 3 Building No. 604 (72) Inventor Yasuo Goto 1-38 Nakata-cho, Handa-shi, Aichi (72) Inventor Tatsuya Nagata 1-29 Sunagawa, Taketoyo-cho, Chita-gun, Aichi Prefecture (72) Inventor Takeyuki Yamamoto 29-13 Koto Higashiwari, Tokoname City, Aichi Prefecture 7th Wakatake Dormitory (72) Yoteru Maenami 1-29 Minatomachi, Tokoname City, Aichi Prefecture
Claims (2)
物を水と接触させてＣａイオン及び／又はＭｇイオンを
水中に溶出させ、この水とＣＯ2 ガスとを接触させてＣ
ａＣＯ3 及び／又はＭｇＣＯ3 を生成させることにより
ＣＯ2 を固定化するようにしたことを特徴とするＣＯ2
の固定化方法。1. An industrial waste containing CaO and / or MgO is contacted with water to elute Ca ions and / or Mg ions into water, and this water is contacted with CO 2 gas to obtain C
ACO 3 and / or CO 2, characterized in that so as to immobilize the CO 2 by forming a MgCO 3
Immobilization method.
及び／又はＭｇＣＯ3 をオートクレーブ反応を利用して
固化させることを特徴とするＣＯ2 の固定化方法。2. The CaCO 3 produced according to claim 1.
And / or method for immobilizing CO 2, characterized in that the MgCO 3 is solidified by using the autoclave reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062360A JPH07265688A (en) | 1994-03-31 | 1994-03-31 | Method for fixing co2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062360A JPH07265688A (en) | 1994-03-31 | 1994-03-31 | Method for fixing co2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07265688A true JPH07265688A (en) | 1995-10-17 |
Family
ID=13197884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6062360A Pending JPH07265688A (en) | 1994-03-31 | 1994-03-31 | Method for fixing co2 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07265688A (en) |
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| WO2000025899A1 (en) * | 1998-10-29 | 2000-05-11 | Nkk Corporation | Method of reducing discharged carbon dioxide |
| WO2004076033A1 (en) * | 2003-02-26 | 2004-09-10 | Tokyo Electric Power Company | Method for absorbing and fixing carbon dioxide in combustion waste gas |
| JP2006075717A (en) * | 2004-09-09 | 2006-03-23 | Nippon Steel Corp | Utilization method of carbon dioxide |
| WO2009102816A3 (en) * | 2008-02-11 | 2009-10-29 | Auxsol, Inc. | Removing carbon dioxide from gaseous emissions |
| EP2207753A1 (en) * | 2008-06-17 | 2010-07-21 | Calera Corporation | Methods and systems for utilizing waste sources of metal oxides |
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| JP2012513944A (en) * | 2007-12-28 | 2012-06-21 | カレラ コーポレイション | How to capture CO2 |
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| WO2000025899A1 (en) * | 1998-10-29 | 2000-05-11 | Nkk Corporation | Method of reducing discharged carbon dioxide |
| US6843843B2 (en) | 1998-10-29 | 2005-01-18 | Nkk Corporation | Underwater immersion block and method to produce the same |
| US7550127B2 (en) | 1998-10-29 | 2009-06-23 | Jfe Steel Corporation | Method for reducing exhaust carbon dioxide |
| WO2004076033A1 (en) * | 2003-02-26 | 2004-09-10 | Tokyo Electric Power Company | Method for absorbing and fixing carbon dioxide in combustion waste gas |
| JP2006075717A (en) * | 2004-09-09 | 2006-03-23 | Nippon Steel Corp | Utilization method of carbon dioxide |
| JP2012513944A (en) * | 2007-12-28 | 2012-06-21 | カレラ コーポレイション | How to capture CO2 |
| WO2009102816A3 (en) * | 2008-02-11 | 2009-10-29 | Auxsol, Inc. | Removing carbon dioxide from gaseous emissions |
| EP2207753A1 (en) * | 2008-06-17 | 2010-07-21 | Calera Corporation | Methods and systems for utilizing waste sources of metal oxides |
| EP2207753A4 (en) * | 2008-06-17 | 2012-01-18 | Calera Corp | Methods and systems for utilizing waste sources of metal oxides |
| US8834688B2 (en) | 2009-02-10 | 2014-09-16 | Calera Corporation | Low-voltage alkaline production using hydrogen and electrocatalytic electrodes |
| CN102482101A (en) * | 2009-09-29 | 2012-05-30 | 爱信精机株式会社 | Carbon Dioxide Gas Processing Apparatus And Method For Processing Carbon Dioxide Gas |
| JP2011073903A (en) * | 2009-09-29 | 2011-04-14 | Aisin Seiki Co Ltd | Apparatus and method for treating carbon dioxide |
| US20120189529A1 (en) * | 2009-09-29 | 2012-07-26 | Aisin Seiki Kabushiki Kaisha | Carbon dioxide gas processing apparatus and carbon dioxide gas processing method |
| EP2484634A4 (en) * | 2009-09-29 | 2013-10-30 | Aisin Seiki | Carbon dioxide gas processing apparatus and method for processing carbon dioxide gas |
| WO2011040231A1 (en) * | 2009-09-29 | 2011-04-07 | アイシン精機株式会社 | Carbon dioxide gas processing apparatus and method for processing carbon dioxide gas |
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