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WO2023003191A1 - Appareil de traitement de gaz de combustion utilisant une inondation dans un épurateur pourvu d'un emballage - Google Patents

Appareil de traitement de gaz de combustion utilisant une inondation dans un épurateur pourvu d'un emballage Download PDF

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Publication number
WO2023003191A1
WO2023003191A1 PCT/KR2022/009073 KR2022009073W WO2023003191A1 WO 2023003191 A1 WO2023003191 A1 WO 2023003191A1 KR 2022009073 W KR2022009073 W KR 2022009073W WO 2023003191 A1 WO2023003191 A1 WO 2023003191A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
tray
unit
tray plate
packing
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/KR2022/009073
Other languages
English (en)
Korean (ko)
Inventor
서호성
김성용
최병욱
김성현
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.)
Samwon Carbon Circulation Co Ltd
Original Assignee
Samwon Carbon Circulation Co 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 Samwon Carbon Circulation Co Ltd filed Critical Samwon Carbon Circulation Co Ltd
Publication of WO2023003191A1 publication Critical patent/WO2023003191A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/14—Packed scrubbers
    • 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
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to an exhaust gas treatment device utilizing flooding in a scrubber equipped with packing. Specifically, it relates to an exhaust gas treatment device applicable to large-capacity treatment of exhaust gas and capable of minimizing an increase in volume.
  • the diameter of the facility can be increased, which leads to an increase in the liquid gas ratio, which causes an increase in power consumption of the pump and renewable energy of the carbon dioxide absorbent. As a result, there is a problem in that the operating cost increases.
  • Patent Document 1 a filler made of a porous metal material of two stages is spaced apart from each other on the inner upper part of the absorption tower, the regenerated absorbent supplied through the upper part of the absorption tower is dispersed, and the mixed gas rising from the lower part passes through carbon dioxide. Initiate the separation and recovery device. The mixed gas rising from the lower portion undergoes a chemical reaction with the absorbent while passing through the packing material, and carbon dioxide contained in the mixed gas is absorbed into the absorbent. The gas from which carbon dioxide has been removed rises above the packing material and then released into the atmosphere.
  • Patent Document 1 discloses a technology for increasing the contact time between carbon dioxide and the absorbent and improving the carbon dioxide removal rate by arranging a filler made of a metal material at a predetermined height in the absorption tower, but efficiently large-capacity flue gas while minimizing the increase in the volume of the facility The technology capable of processing is not disclosed.
  • the present invention is to solve the above problems, and to provide an apparatus for treating pollutants in exhaust gas and a method for treating pollutants in exhaust gas, which are applicable to large-capacity treatment of exhaust gas and can minimize the increase in volume. do.
  • An exhaust gas treatment device for achieving this object includes a scrubber body portion 100; A pollutant treatment unit installed inside the scrubber body 100, wherein the pollutant treatment unit includes a tray unit 200, a packing unit 300 disposed on top of the tray unit 200, and the packing It includes a spraying part 400 positioned above the part 300, and the tray part 200 has a flat tray plate 210 and one or more overflow pipes 220 penetrating the tray plate 210. ), and the overflow pipe 220 may transport the excess absorbent filled in the upper part of the tray plate 210 to the lower part of the scrubber body part 100.
  • the overflow pipe 220 includes an upper overflow pipe 221 protruding from the top of the tray plate 210 and a lower overflow pipe 222 extending to the bottom of the tray plate 210,
  • the overflow lower pipe 222 may be located inside the absorbent accommodated in the lower part of the scrubber body 100.
  • the packing part 300 may be stacked higher than the protruding height of the overflow upper pipe 221 .
  • the tray plate 210 may have one or more ventilation holes through which exhaust gas passes.
  • the tray plate 210 may be made of a porous material, and a hole through which gas passes may be formed in the tray plate 210 .
  • Exhaust gas may pass through the pores of the tray plate 210 .
  • Exhaust gas may be supplied between the tray plate 210 and the absorbent layer accommodated in the lower part of the scrubber body 100.
  • Two or more contaminant processing units mounted inside the scrubber body 100 may be disposed in vertical positions.
  • a lower end of the lower overflow pipe of the contaminant treatment unit located at the upper portion may be positioned lower in a vertical direction than an upper end of the upper overflow pipe of the pollutant treatment unit located at the lower side.
  • the present invention can also be provided in the form of various combinations of means for solving the above problems.
  • the exhaust gas passes through the packing layer positioned above the tray and the absorbent layer filled between the packing layers, thereby increasing the contact time between the exhaust gas and the absorbent to increase the removal efficiency of pollutant gas.
  • the packing layer is positioned above the tray forming the flooding, the volume of the carbon dioxide treatment device can be reduced.
  • FIG. 1 is a block diagram of an exhaust gas treatment device according to the present invention.
  • FIG. 2 is a schematic diagram of a scrubber according to a first embodiment of the present invention.
  • FIG 3 is a schematic diagram of a tray according to a first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a scrubber according to a second embodiment of the present invention.
  • FIG. 1 is a block diagram of an exhaust gas treatment device according to the present invention.
  • the carbon dioxide treatment device may include a scrubber 10, a compressor 500, and a pump 600.
  • the scrubber 10 reacts exhaust gas containing pollutants with an absorbent to produce a pollutant saturated absorbent.
  • the contaminant may be carbon dioxide.
  • An exhaust gas compressor 500 connected to an exhaust gas supply pipe (not shown) connected to the lower part of the scrubber 10 and a pump 600 for supplying an absorbent accommodated inside the scrubber 10 to the regenerator 900, and the It includes supplying the absorbent regenerated from the regenerator to the circulation transfer pipe 700 that supplies the injection unit 400.
  • the regenerated absorbent is supplied to the circulation transfer pipe 700 through a pump (not shown), and then supplied to and sprayed to a spraying unit 400 located at an inner upper end of the scrubber 10 to be described later.
  • It may also include a cooler 800 for cooling exhaust gas from which contaminants are removed discharged from the top of the scrubber 10. Contamination in the present invention
  • the material may be carbon dioxide, and the absorbent may be an amine-based aqueous solution such as monoethanolamine (MEA), N-methyldiethanolamine (MDEA), or diethanolamine (DEA).
  • MEA monoethanolamine
  • MDEA N-methyldiethanolamine
  • DEA diethanolamine
  • a 30 wt% MEA aqueous solution may be used.
  • the compressor 500 compresses the exhaust gas supplied in the shearing process to a predetermined pressure and supplies it to the inside of the scrubber 10.
  • FIG. 2 is a schematic diagram of a scrubber according to the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of a tray according to the first embodiment of the present invention.
  • the scrubber 10 includes a scrubber body part 100, a tray part 200, a packing part 300, and a spray part 400 in which a processing space for contaminants is formed.
  • the scrubber body 100 is manufactured in a substantially cylindrical shape using a plate-like member having chemical resistance and corrosion resistance, and is installed in a vertical direction (z-axis direction).
  • An exhaust gas inlet 110 through which exhaust gas flows is provided at one side of the lower portion of the scrubber body 100, and a gas outlet 140 through which exhaust gas from which carbon dioxide is removed is discharged at the upper side of the scrubber body 100. Is located.
  • a liquid absorbent is filled at a certain level in the inner lower part of the scrubber body 100, and an absorbent outlet 130 through which a pollutant saturated absorbent is discharged is located at the lower part of the scrubber body 100.
  • the absorbent discharge port 130 at the bottom of the scrubber body 100 is connected to the pump 600 through a pipe, and is supplied to the absorbent regenerator 900 through the pump 600 and absorbed contaminants.
  • the material is degassed to produce a regenerated absorbent.
  • the regenerated absorbent is supplied to the circulation transfer pipe 700 by a pump (not shown) provided separately outside the regenerator 900, and is distributed through the injection part inlet 120 connected to the circulation transfer pipe 700. It is supplied to the master unit 400.
  • the tray unit 200 is positioned horizontally (x-axis direction) in the inner space of the scrubber body unit 100.
  • the tray unit 200 will be described in detail with reference to FIG. 2 .
  • the tray 200 may include a tray plate 210 and a pipe 220.
  • the tray plate 210 has a predetermined thickness and is manufactured in a shape corresponding to the inner cross section of the scrubber body 100.
  • the tray plate 210 may have a disc shape having a predetermined thickness.
  • the tray plate 210 is horizontally disposed inside the scrubber body 100, and an annular member (not shown) extending in the horizontal direction by a predetermined length is located on the inner wall surface of the scrubber body 100.
  • the tray unit 200 may be supported by positioning the edge portion of the tray plate 210 at the upper end.
  • the tray plate 210 may be made of a rigid material having chemical resistance and corrosion resistance.
  • the tray plate 210 may have a flat plate shape, and is made of a material having pores through which exhaust gas can pass, so that exhaust gas rising from the bottom can pass therethrough.
  • a plurality of air holes 230 penetrating vertically may be formed in the tray plate 210 horizontally disposed inside the scrubber body 100 .
  • the horizontal cross section of the air hole 230 is circular, and the diameter of the cross section may be 10 mm or less, specifically 7 mm or less, and more specifically, 5 mm or less.
  • the cross-sectional diameter of the air hole 230 is 10 mm or more, the absorbent liquid to be filled to a predetermined height on the top surface of the tray plate 210 may flow downward through the air hole 230 .
  • one or more overflow pipes 220 penetrating the tray plate 210 may be disposed.
  • the overflow pipe 220 penetrates the tray plate 210 and protrudes from the top of the tray plate 210 by a predetermined length.
  • the upper overflow pipe 221 and the lower overflow pipe 221 extend below the tray plate 210. It can be divided into piping 222.
  • the end of the lower overflow pipe 222 is located inside the absorbent filled in the lower part of the scrubber body 100. When the absorbent filled in the upper surface of the tray plate 210 is higher than the upper overflow pipe 221, the absorbent goes to the lower part of the scrubber body 100 through the inside of the upper overflow pipe 221. flows
  • the horizontal cross-sectional area of the overflow pipe 220 is 30%, 20%, or less than 10% of the cross-sectional area of the tray plate, but is not particularly limited as long as contaminants can be efficiently treated.
  • the packing unit 300 may be located on the top surface of the tray plate 210 .
  • the packing unit 300 is a layer formed by stacking members having a plurality of pall rings or predetermined geometric shapes, and serves to treat carbon dioxide by increasing the contact area between an absorbent sprayed from the top and exhaust gas.
  • the polling or geometric members may be formed of a metal or resin material having chemical resistance and corrosion resistance, and may have a large surface area as much as possible.
  • the packing part 300 may be disposed on the entire upper surface of the tray plate 210 and may be disposed higher than the upper overflow pipe 221 .
  • a spraying unit 400 for spraying a liquid absorbent may be positioned above the packing unit 300 .
  • the injection unit 400 includes a horizontally positioned injection pipe 410 connected to the circulation transfer pipe 700 and a spray nozzle 420 connected to the injection pipe 410 and spraying an absorbent downward. More than one can be placed. 2 shows that two spray nozzles 420 are disposed in one spray pipe 410, but the spray pipe 410 and the spray nozzle 420 depend on the volume, diameter and throughput of the scrubber 10 It is obvious that the quantity of is changeable.
  • the absorbent accommodated in the inner lower end of the scrubber body 100 may be filled lower than the lower end of the exhaust gas inlet 110 .
  • the exhaust gas pressurized and supplied by the compressor 500 passes through the air hole 230 formed in the tray plate 210 and passes through the packing part 300 and the absorbent layer disposed on the upper surface of the tray plate 210. After the contaminants in the exhaust gas are primarily absorbed, carbon dioxide is secondarily absorbed while contacting the absorbent sprayed through the upper spray nozzle 420, and then the gas outlet 140 located at the top of the scrubber body 100 ) through which it is discharged to the outside.
  • a demister is disposed between the gas outlet 140 and the injection unit 400 to remove droplets and other impurities in the discharged gas.
  • FIG. 4 is a schematic diagram of a scrubber according to a second embodiment of the present invention.
  • the second embodiment of the present invention is the same as the first embodiment described with reference to FIGS. 1 to 3 except that a configuration of a tray unit, a packing unit, and a jetting unit is additionally provided, and hereinafter, the additional Only a configuration in which the tray unit, the packing unit, and the injection unit are set will be described.
  • the scrubber 20 includes a first injection part 1401, a first packing part 1301, and a first tray part at the inner lower part of the scrubber body part 100. 1201, which is the same as the injection unit 400, the packing unit 300, and the tray unit 200 of the first embodiment.
  • the second tray unit 1202 is located above the first injection unit 1401, and the lower end of the open blow lower pipe (not shown) of the second tray unit 1202 is over the first tray unit 1201. It is located at a lower position in the vertical direction (z-axis direction) than the upper end of the upper flow pipe (not shown).
  • a tray plate (not shown) of the second tray unit 1202 is positioned above the first spray unit 1401 .
  • the absorbents supplied to the first injection unit 1401 and the second injection unit 1402 may be supplied through one circulation transfer pipe, and a control valve is provided to supply each injection unit from a controller (not shown). The amount of absorbent can be controlled.
  • the nozzle provided in the first injection unit 1401 and the nozzle provided in the second injection unit 1402 may be different. Compared to the nozzles provided in the second injection unit 1402, the nozzle provided in the first injection unit 1401 can spread and spray the sprayed liquid droplets on a wide horizontal surface with a small amount of absorbent.
  • the second injection unit 1402 one of commonly used nozzles, such as a fullcone nozzle or a hollowcone nozzle, may be applied.
  • Exhaust gas having a carbon dioxide concentration of 12% was introduced into the scrubber body through the exhaust gas inlet at a pressure of 3.6 bar.
  • the exhaust gas passes through the tray plate of the tray unit located inside the scrubber body, the packing unit, and the absorbent filled at the top of the tray plate, passes through the absorbent injected from the spray unit located at the top, and then passes through the upper part of the scrubber body.
  • the discharged gas After being discharged to the outside through the gas outlet, the discharged gas is cooled and supplied to a gas analyzer to analyze the concentration of carbon dioxide.
  • the absorbent is a 30 wt% MEA aqueous solution
  • the temperature is 40 ° C
  • the packing part is a metal wire gauze (SUS 303).
  • the liquid gas ratio was 3.5 L/m 3
  • the residence time inside the scrubber was 7 seconds.
  • the carbon dioxide absorption experiment was performed with the difference between the pressure of the exhaust gas flowing into the scrubber and the pressure of the gas treated with carbon dioxide discharged from the scrubber, that is, the differential pressure was 210 mmH 2 O, and the experimental results are summarized in Table 1 below.
  • the carbon dioxide absorption experiment was performed under the same conditions as in the embodiment except that the packing part was not disposed inside the scrubber body, and the experimental results are summarized in Table 1 below.
  • Comparative Example 1 the differential pressure between the exhaust gas entering the scrubber and the exhaust gas was performed under the condition of 290 mmH 2 O.
  • the present invention can improve the efficiency of treating pollutants in exhaust gas by using an apparatus for treating pollutants in exhaust gas using flooding in a scrubber equipped with packing, and can minimize the increase in the volume of the facility even if the amount of treated exhaust gas increases.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)

Abstract

La présente invention concerne un appareil de traitement de gaz de combustion pour le traitement efficace de contaminants dans une grande quantité de gaz de combustion. Plus spécifiquement, l'appareil de traitement de gaz de combustion comprend : une partie de corps d'épurateur (100) ; et une partie de traitement de contaminants montée à l'intérieur de la partie de corps d'épurateur (100). La partie de traitement de contaminants comprend : une partie plateau (200) ; une partie d'emballage (300) disposée au niveau de l'extrémité supérieure de la partie plateau (200) ; et une partie de pulvérisation (400) disposée au-dessus de la partie d'emballage (300). La partie plateau (200) comprend : une plaque de plateau plate (210) ; et au moins un tuyau de trop-plein (220) passant à travers la plaque de plateau (210). Un excès d'absorbant remplissant la région au-dessus de la plaque de plateau (210) est transporté sous la partie de corps d'épurateur (100) par le tuyau de trop-plein (220).
PCT/KR2022/009073 2021-07-23 2022-06-24 Appareil de traitement de gaz de combustion utilisant une inondation dans un épurateur pourvu d'un emballage Ceased WO2023003191A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210096956A KR102374527B1 (ko) 2021-07-23 2021-07-23 패킹이 구비된 스크러버에서의 플러딩을 활용한 배가스 처리 장치
KR10-2021-0096956 2021-07-23

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WO2023003191A1 true WO2023003191A1 (fr) 2023-01-26

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KR102775274B1 (ko) * 2024-05-10 2025-03-05 주식회사 애니텍 이산화탄소 포집 장치 및 이를 포함하는 블루 수소 생산 시스템

Citations (5)

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KR20020015281A (ko) * 2000-08-21 2002-02-27 고사이 아끼오 황산 미스트의 제거방법 및 이의 제거장치
KR20160109392A (ko) * 2015-03-11 2016-09-21 한국전력공사 이산화탄소 흡수 및 탈거 시스템
KR101742834B1 (ko) * 2009-06-25 2017-06-15 엔바이로우솔루션즈 아이엔시. 가스 스크러버 장치 및 방법
KR20180038420A (ko) * 2015-06-02 2018-04-16 퍼시픽 그린 테크날러지스 인코퍼레이티드 다수의 플러드형 스크러버 헤드들을 갖는 다중 레벨 가스 스크러버
WO2018089214A2 (fr) * 2016-11-09 2018-05-17 Schubert Environmental Equipment, Inc. Dépoussiéreur à voie humide

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JP2842569B1 (ja) * 1998-01-20 1999-01-06 千代田エンジニアリング株式会社 集塵方法及びその装置
KR101191085B1 (ko) 2009-12-23 2012-10-15 한국전력공사 습식 이산화탄소 분리 회수장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020015281A (ko) * 2000-08-21 2002-02-27 고사이 아끼오 황산 미스트의 제거방법 및 이의 제거장치
KR101742834B1 (ko) * 2009-06-25 2017-06-15 엔바이로우솔루션즈 아이엔시. 가스 스크러버 장치 및 방법
KR20160109392A (ko) * 2015-03-11 2016-09-21 한국전력공사 이산화탄소 흡수 및 탈거 시스템
KR20180038420A (ko) * 2015-06-02 2018-04-16 퍼시픽 그린 테크날러지스 인코퍼레이티드 다수의 플러드형 스크러버 헤드들을 갖는 다중 레벨 가스 스크러버
WO2018089214A2 (fr) * 2016-11-09 2018-05-17 Schubert Environmental Equipment, Inc. Dépoussiéreur à voie humide

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