JP2010279897A - Co2回収装置 - Google Patents
Co2回収装置 Download PDFInfo
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- JP2010279897A JP2010279897A JP2009134947A JP2009134947A JP2010279897A JP 2010279897 A JP2010279897 A JP 2010279897A JP 2009134947 A JP2009134947 A JP 2009134947A JP 2009134947 A JP2009134947 A JP 2009134947A JP 2010279897 A JP2010279897 A JP 2010279897A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1475—Removing carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
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Abstract
【解決手段】CO2とO2とを含有する排ガス12とCO2吸収液15とを接触させて排ガス12中のCO2を除去するCO2吸収塔16と、CO2吸収塔16でCO2を吸収したCO2吸収液(リッチ溶液)17中のCO2を除去し、再生する再生塔と、再生塔でCO2を除去した再生CO2吸収液(リーン溶液)15をCO2吸収塔16で再利用するCO2回収装置であって、前記CO2吸収塔16の底部16a側の下部液溜部50内に、吸収液中の気泡を凝集する気泡凝集部材51が配設されている。
【選択図】図1
Description
そして、このCO2回収装置100では、再生塔18でCO2を除去した再生CO2吸収液(以下、「リーン溶液」ともいう。)15はCO2吸収塔16でCO2吸収液として再利用する。
CO2回収部16AでCO2が除去された後のCO2除去排ガスは、CO2吸収塔16内の水洗部16Bでノズルから供給されるCO2吸収液を含む循環する凝縮水19と気液接触して、CO2除去排ガスに同伴するCO2吸収液15が回収され、その後CO2が除去された排ガス21は系外に放出される。
また、CO2を吸収したCO2吸収液17であるリッチ溶液は、リッチソルベントポンプ22により昇圧され、リッチ/リーンソルベント熱交換器23において、再生塔18で再生されたCO2吸収液15であるリーン溶液により加熱され、再生塔18に供給される。
一方、再生塔18の頭頂部からは塔内においてリッチ溶液およびセミリーン溶液から放出された水蒸気を伴ったCO2ガス26が導出され、コンデンサ27により水蒸気が凝縮され、分離ドラム28にて水が分離され、CO2ガス26が系外に放出されて別途回収される。この回収されたCO2ガス26は、石油増進回収法(EOR:Enhanced Oil Recovery)を用いて油田中に圧入するか、帯水層へ貯留し、温暖化対策を図っている。
分離ドラム28にて分離された水は凝縮水循環ポンプ29にて再生塔18の上部に供給される。再生されたCO2吸収液(リーン溶液)15は、リッチ/リーンソルベント熱交換器23にてリッチ溶液17により冷却され、つづいてリーンソルベントポンプ30にて昇圧され、さらにリーンソルベントクーラ31にて冷却された後、CO2吸収塔16に供給される。
この気泡には排ガス中の成分である酸素(O2)を含むため、一般に吸収液中に溶解した酸素の溶存酸素の濃度が約25ppm程度であるのに対し、吸収液中に巻き込まれた気泡中の酸素濃度は約100ppm程度にまで増加する。
図1は、本発明の実施例1に係るCO2回収装置の構成を示す概略図である。図中、前記図2に示したCO2回収装置と同一構成には同一符号を付して重複した説明は省略する。
なお、図1では、前述したCO2回収装置100のCO2吸収塔16を示す。
図1に示すように、本発明の実施例に係るCO2回収装置は、CO2とO2とを含有する排ガス12とCO2吸収液(以下、「吸収液」ともいう。)15とを接触させて排ガス12中のCO2を除去するCO2吸収塔16と、CO2吸収塔16でCO2を吸収したCO2吸収液(以下、「リッチ溶液」ともいう。)17中のCO2を除去し、再生する再生塔と、再生塔でCO2を除去した再生CO2吸収液(以下、「リーン溶液」ともいう。)15をCO2吸収塔16で再利用するCO2回収装置であって、前記CO2吸収塔16の底部16a側の下部液溜部50内に、吸収液中の気泡を凝集させる気泡凝集部材51が配設されているものである。
その結果、再生塔に送込まれるリッチ溶液17中に気泡が存在しなくなるので、酸素は溶存酸素のみとなることとなる。
また、ワイヤ材料又は繊維状材料の集合体(積層体も含む)以外には、例えば充填材又は焼結金属を挙げることができる。
CO2吸収塔16の下部液溜部50内に気泡凝集部材51を配置させ、アミン系のCO2吸収液を用いて、排ガス中のCO2を除去する際に、酸素濃度を計測したところ、気泡凝集部材51を設置する以前は、リッチ溶液17中の酸素濃度が、54ppmであったものが、気泡凝集部材51を設置することで16ppm程度に低減し、約70%の酸素を除去することができた。
15 CO2吸収液(リーン溶液)
16 CO2吸収塔
17 CO2を吸収したCO2吸収液(リッチ溶液)
18 再生塔
50 下部液溜部
51 気泡凝集部材
Claims (3)
- CO2とO2とを含有する排ガスとCO2吸収液とを接触させて前記排ガス中のCO2を除去するCO2吸収塔と、前記CO2吸収塔でCO2を吸収したリッチ溶液中のCO2を除去し、再生する再生塔と、前記再生塔でCO2を除去したリーン溶液を前記CO2吸収塔で再利用するCO2回収装置であって、
前記CO2吸収塔の下部液溜部内に、CO2吸収液中への気泡を凝集させる気泡凝集部材が配設されていることを特徴とするCO2回収装置。 - 請求項1において、
前記気泡巻込み防止部材が、ワイヤ材料又は繊維状材料の集合体、充填材、焼結金属のいずれか一種であることを特徴とするCO2回収装置。 - 請求項1又は2において、
前記気泡巻込み防止部材が、液溜部内の液面近傍又は液面下に浸漬されていることを特徴とするCO2回収装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009134947A JP5173941B2 (ja) | 2009-06-04 | 2009-06-04 | Co2回収装置 |
AU2009230803A AU2009230803B1 (en) | 2009-06-04 | 2009-10-28 | CO2 recovering apparatus |
CA2684156A CA2684156C (en) | 2009-06-04 | 2009-10-29 | Co2 recovering apparatus |
US12/608,286 US8398757B2 (en) | 2009-06-04 | 2009-10-29 | CO2 recovering apparatus |
EP09174655.2A EP2258461B1 (en) | 2009-06-04 | 2009-10-30 | C02 recovering apparatus |
Applications Claiming Priority (1)
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JP2009134947A JP5173941B2 (ja) | 2009-06-04 | 2009-06-04 | Co2回収装置 |
Publications (2)
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JP2010279897A true JP2010279897A (ja) | 2010-12-16 |
JP5173941B2 JP5173941B2 (ja) | 2013-04-03 |
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JP2009134947A Expired - Fee Related JP5173941B2 (ja) | 2009-06-04 | 2009-06-04 | Co2回収装置 |
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US (1) | US8398757B2 (ja) |
EP (1) | EP2258461B1 (ja) |
JP (1) | JP5173941B2 (ja) |
AU (1) | AU2009230803B1 (ja) |
CA (1) | CA2684156C (ja) |
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US8398757B2 (en) | 2013-03-19 |
JP5173941B2 (ja) | 2013-04-03 |
EP2258461A1 (en) | 2010-12-08 |
US20100307344A1 (en) | 2010-12-09 |
CA2684156C (en) | 2012-06-26 |
EP2258461B1 (en) | 2015-01-07 |
AU2009230803B1 (en) | 2010-12-16 |
CA2684156A1 (en) | 2010-12-04 |
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