WO2021210271A1 - 二酸化炭素回収装置 - Google Patents

二酸化炭素回収装置 Download PDF

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Publication number
WO2021210271A1
WO2021210271A1 PCT/JP2021/006674 JP2021006674W WO2021210271A1 WO 2021210271 A1 WO2021210271 A1 WO 2021210271A1 JP 2021006674 W JP2021006674 W JP 2021006674W WO 2021210271 A1 WO2021210271 A1 WO 2021210271A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
exhaust gas
carbon dioxide
cooling
unit
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.)
Ceased
Application number
PCT/JP2021/006674
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
修 宮本
上條　孝
真也 岸本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Engineering Ltd
Original Assignee
Mitsubishi Heavy Industries Engineering Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Engineering Ltd filed Critical Mitsubishi Heavy Industries Engineering Ltd
Priority to JP2022515230A priority Critical patent/JP7490757B2/ja
Priority to EP21789073.0A priority patent/EP4119216A4/en
Priority to CA3180357A priority patent/CA3180357C/en
Priority to AU2021256299A priority patent/AU2021256299B2/en
Publication of WO2021210271A1 publication Critical patent/WO2021210271A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
    • B01D51/10—Conditioning the gas to be cleaned
    • 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
    • B01D53/002—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 condensation
    • 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
    • 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
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/204—Amines
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/65—Employing advanced heat integration, e.g. Pinch technology
    • 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
    • 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

Definitions

  • the pretreatment tower cools the gas G passing through the gas-liquid contact portion by the exhaust gas cooling water returned from the circulation path.
  • the circulation path for circulating the exhaust gas cooling water is provided with a branch path for dividing the exhaust gas cooling water.
  • the recovery device separates the condensed water (specifically, the amount of circulating water corresponding to the condensed water) from the circulation path through the branch path and divides the flow. Finally, the circulating water is added to the absorbing liquid (absorption tower).
  • the present disclosure has been made in view of such circumstances, and an object of the present disclosure is to provide a carbon dioxide capture device having a simple structure.
  • the carbon dioxide recovery device comprises an exhaust gas cooling unit that cools the exhaust gas by bringing the exhaust gas cooling water into contact with the exhaust gas, the exhaust gas cooling water that has cooled the exhaust gas, and cooling the exhaust gas.
  • the generated condensed water is extracted from the exhaust gas cooling section and returned to the exhaust gas cooling section, and the carbon dioxide contained in the exhaust gas is brought into contact with the exhaust gas cooled by the exhaust gas cooling section and the absorbing liquid.
  • An absorption unit having a carbon dioxide absorbing unit for absorbing carbon dioxide into the absorbing liquid and an exhaust gas washing unit for contacting the exhaust gas absorbed by the carbon dioxide absorbing unit with the exhaust gas washing water to wash the exhaust gas.
  • the carbon capture and storage device 1 includes a reclaimer 50 that removes impurities (deteriorated substances) from the absorption liquid regenerated in the regeneration tower 40.
  • the carbon dioxide recovery device 1 includes a carbon dioxide processing unit 60 that processes carbon dioxide discharged from the regeneration tower 40.
  • the exhaust gas cooling tower 10 is provided with a first circulation line (circulation flow path) L2 that guides the exhaust gas cooling water (including condensed water) stored in the bottom of the exhaust gas cooling tower 10 to the cooling water supply unit 13.
  • the first circulation line L2 is provided with a circulating water pump 14 and a circulating water cooling device 15 for cooling the circulating water.
  • the circulating water is water that circulates in the first circulation line L2, and specifically, is exhaust gas cooling water that includes condensed water in the exhaust gas cooling tower 10.
  • the circulating water and a cooling medium for example, water
  • an absorbing liquid supply unit 23 that supplies the absorbing liquid to the carbon dioxide absorbing unit 21 is provided above the carbon dioxide absorbing unit 21.
  • the absorption liquid (lean liquid) stored in the bottom of the regeneration tower 40 is supplied to the carbon dioxide absorption unit 21 via the absorption liquid line L6.
  • the absorbent liquid line L6 is connected to the absorbent liquid supply unit 23.
  • the absorption liquid line L6 is provided with an absorption liquid pump 24 for pumping the absorption liquid and an absorption liquid cooling device 25 for cooling the absorption liquid.
  • the absorption liquid is cooled by thermally contacting the absorption liquid and the cooling medium through a heat transfer tube or the like and exchanging heat between the absorption liquid and the cooling medium. That is, in the absorbent liquid cooling device 25, the absorbent liquid and the cooling medium do not come into direct contact with each other.
  • the absorbing liquid is a liquid containing a carbon dioxide absorbent.
  • the type of carbon dioxide absorber is not particularly limited, but examples of the carbon dioxide absorber include amines such as alkanolamines typified by monoethanolamine and diethanolamine, sodium hydroxide, potassium hydroxide, calcium hydroxide and the like. Various alkaline aqueous solutions other than amines can be used.
  • the absorbing liquid that has absorbed carbon dioxide in the carbon dioxide absorbing unit 21 falls to the bottom of the absorbing tower 20.
  • the absorbing liquid that has fallen to the bottom of the absorption tower 20 is stored in the bottom.
  • the absorption liquid stored in the bottom portion has a higher carbon dioxide concentration than the absorption liquid stored in the bottom portion of the regeneration tower 40.
  • an absorbent liquid that absorbs carbon dioxide and has a high carbon dioxide concentration is referred to as a rich liquid.
  • the absorption tower 20 is provided with a level meter 20a for detecting the height (level) of the absorption liquid stored at the bottom.
  • the water washing unit 22 wash the exhaust gas with water in order to recover the carbon dioxide absorber contained in the exhaust gas after removing the carbon dioxide.
  • the water washing unit 22 has a first water washing unit 26 arranged on the upstream side in the exhaust gas flow, and a second water washing unit (exhaust gas water washing unit) 32 arranged on the downstream side of the first water washing unit 26. ..
  • the first water washing unit 26 aims to cool the exhaust gas as well as wash the exhaust gas with water.
  • a demister for removing mist in the exhaust gas may be provided between the first water washing unit 26 and the second water washing unit 32.
  • the exhaust gas that has passed through the carbon dioxide absorbing section 21 is guided to the first exhaust gas washing section 27 through the opening of the first chimney tray 29.
  • the first chimney tray 29 is configured so that gas can pass from the bottom to the top through the opening and liquid cannot pass from the top to the bottom.
  • Washing water is supplied to the first exhaust gas washing section 27 from above by the first washing water supply section 28.
  • the exhaust gas is washed with water and cooled by the contact between the washing water and the exhaust gas.
  • the carbon dioxide absorber contained in the exhaust gas is dissolved in the washing water.
  • the carbon dioxide absorber can be recovered from the exhaust gas.
  • the washing water that has fallen from the first exhaust gas washing unit 27 is stored in the first chimney tray 29.
  • the exhaust gas that has passed through the first water washing section 26 is guided to the second exhaust gas washing section 33 through the opening of the second chimney tray 35.
  • the second chimney tray 35 is configured so that gas can pass from the bottom to the top through the opening and liquid cannot pass from the top to the bottom.
  • the second washing section 32 is provided with a third circulation line L8 that guides the washing water stored in the second chimney tray 35 to the second washing water supply section 34.
  • a second washing water pump 36 is provided on the third circulation line L8.
  • a supply line L4 is connected to the third circulation line L8.
  • the amount of water in the system in the carbon dioxide capture device 1 of the present embodiment will be described.
  • the amount of water contained in the exhaust gas introduced from the exhaust gas introduction line L1 to the exhaust gas cooling tower 10 is referred to as W1.
  • the amount of water contained in the exhaust gas discharged from the exhaust gas cooling tower 10 and introduced into the absorption tower 20 via the exhaust gas line L3 is referred to as W2.
  • the amount of circulating water supplied to the second washing section 32 of the absorption tower 20 via the supply line L4 is referred to as W3.
  • the amount of water contained in the exhaust gas discharged from the absorption tower 20 via the exhaust gas discharge line L9 is referred to as W4.
  • the water balance in the system can be maintained only by providing the discharge flow path.
  • the structure of the carbon dioxide recovery device can be simplified as compared with the case where the condensed water supplied to the absorption unit via the supply flow path is evaporated.
  • the supply flow path is provided with a collection unit (17) for collecting impurities in the circulating water flowing through the supply flow path.
  • the carbon dioxide recovery device includes a carbon dioxide washing unit (62) for washing carbon dioxide discharged from the recycling unit with washing water and the circulating water flowing through the supply flow path.
  • a washing water flow path (L25) for supplying the washing water to the carbon dioxide washing section is provided.
  • a cooling unit and an absorbing unit located above the cooling unit are housed inside one outer shell.
  • the exhaust gas can be raised and treated in the absorbing section. Therefore, the functions of both the cooling unit and the absorbing unit can be contained in one outer shell. Therefore, for example, as compared with the case where the cooling unit and the absorbing unit are housed in separate outer shells, the installation space of the outer shell itself and the connection duct for connecting the outer shells can be reduced, so that the equipment can be installed. The installation area can be reduced. Further, since the above-mentioned connecting duct and its supporting member are not required, costs such as material cost and manufacturing cost can be reduced.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
PCT/JP2021/006674 2020-04-15 2021-02-22 二酸化炭素回収装置 Ceased WO2021210271A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2022515230A JP7490757B2 (ja) 2020-04-15 2021-02-22 二酸化炭素回収装置
EP21789073.0A EP4119216A4 (en) 2020-04-15 2021-02-22 CARBON DIOXIDE CAPTURE DEVICE
CA3180357A CA3180357C (en) 2020-04-15 2021-02-22 Carbon dioxide recovery apparatus
AU2021256299A AU2021256299B2 (en) 2020-04-15 2021-02-22 Carbon dioxide recovery apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/849,132 US11628391B2 (en) 2020-04-15 2020-04-15 Carbon dioxide recovery apparatus
US16/849,132 2020-04-15

Publications (1)

Publication Number Publication Date
WO2021210271A1 true WO2021210271A1 (ja) 2021-10-21

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ID=78082356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/006674 Ceased WO2021210271A1 (ja) 2020-04-15 2021-02-22 二酸化炭素回収装置

Country Status (5)

Country Link
US (1) US11628391B2 (https=)
EP (1) EP4119216A4 (https=)
JP (1) JP7490757B2 (https=)
AU (1) AU2021256299B2 (https=)
WO (1) WO2021210271A1 (https=)

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WO2026048180A1 (ja) * 2024-08-27 2026-03-05 三菱重工業株式会社 酸性ガス回収システム

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CN116059793A (zh) * 2021-10-29 2023-05-05 中石化南京化工研究院有限公司 湿法捕集二氧化碳的系统和方法
FR3122249B1 (fr) * 2021-12-17 2023-03-24 Air Liquide Installation de refroidissement d’un flux gazeux, contenant du CO2 et un procédé mettant en œuvre une telle installation
CN114515505B (zh) * 2022-01-05 2022-09-13 中煤地第二勘探局集团有限责任公司 一种用于高炉烟气碳捕捉的方法
CN115779637A (zh) * 2022-10-21 2023-03-14 中国华能集团清洁能源技术研究院有限公司 二氧化碳捕集系统
US20250032973A1 (en) * 2023-07-26 2025-01-30 Mitsubishi Heavy Industries, Ltd. Co2 recovery device
DK182078B1 (en) 2023-12-18 2025-07-03 Liquid Wind Ab Continuous solvent recovery in a Power to X methanol plant
EP4613349A1 (en) * 2024-03-05 2025-09-10 Linde GmbH Method of modifying a quench tower, quench tower, and method and apparatus for producing a reaction product

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JP2019076810A (ja) * 2017-10-20 2019-05-23 三菱重工エンジニアリング株式会社 酸性ガス除去装置及び酸性ガス除去方法

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See also references of EP4119216A4

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2026048180A1 (ja) * 2024-08-27 2026-03-05 三菱重工業株式会社 酸性ガス回収システム

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Publication number Publication date
EP4119216A1 (en) 2023-01-18
EP4119216A4 (en) 2023-05-24
US20210322921A1 (en) 2021-10-21
CA3180357A1 (en) 2021-10-21
AU2021256299B2 (en) 2023-12-21
US11628391B2 (en) 2023-04-18
AU2021256299A1 (en) 2022-11-10
JPWO2021210271A1 (https=) 2021-10-21
JP7490757B2 (ja) 2024-05-27

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