WO2017159099A1 - Dispositif de traitement de gaz d'échappement - Google Patents

Dispositif de traitement de gaz d'échappement Download PDF

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Publication number
WO2017159099A1
WO2017159099A1 PCT/JP2017/003677 JP2017003677W WO2017159099A1 WO 2017159099 A1 WO2017159099 A1 WO 2017159099A1 JP 2017003677 W JP2017003677 W JP 2017003677W WO 2017159099 A1 WO2017159099 A1 WO 2017159099A1
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WO
WIPO (PCT)
Prior art keywords
exhaust gas
liquid return
flue
reducer
return ring
Prior art date
Application number
PCT/JP2017/003677
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English (en)
Japanese (ja)
Inventor
邦幸 高橋
譲 榎本
Original Assignee
富士電機株式会社
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Filing date
Publication date
Application filed by 富士電機株式会社 filed Critical 富士電機株式会社
Publication of WO2017159099A1 publication Critical patent/WO2017159099A1/fr

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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
    • 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
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur 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

Definitions

  • the present invention relates to an exhaust gas treatment apparatus.
  • the upper liquid return structure may have at least one of a flue protrusion and an upper liquid return ring.
  • the flue protrusion may be a portion provided by extending a part of the flue to the reducer.
  • the upper liquid return ring may protrude from the inner wall of the reducer part.
  • the upper liquid return ring may be provided in a ring shape on the inner wall of the reducer part.
  • the inner diameters of the flue protrusion, upper liquid return ring, and lower liquid return ring may be smaller in the order of the flue protrusion, upper liquid return ring, and lower liquid return ring.
  • the upper liquid return ring may have a flange part and a cylindrical part.
  • the flange portion may contact the inner wall of the reducer portion.
  • the cylindrical portion may be provided in contact with the inner diameter of the flange portion.
  • the cylindrical portion of the upper liquid return ring may have a truncated cone shape.
  • the frustoconical shape may have an inner surface parallel to the inner wall of the reducer portion.
  • the cylindrical part of the upper liquid return ring may be cylindrical.
  • the cylindrical shape may have an inner surface parallel to the inner wall of the reaction tower.
  • the flange portion of the upper liquid return ring may be provided orthogonal to the inner wall of the reducer portion.
  • At least a part of the flue protrusion may have a cylindrical portion.
  • the cylindrical portion may have a truncated cone shape whose inner diameter increases toward the bottom side.
  • the exhaust gas treatment apparatus may further include a trunk pipe, a plurality of branch pipes, and a plurality of injection units.
  • the trunk tube may carry liquid.
  • the main pipe may extend in the height direction in the internal space of the reaction tower.
  • the plurality of branch pipes may be provided at different height positions.
  • the plurality of branch pipes may be provided extending from the outer wall of the trunk pipe toward the inner wall of the reaction tower.
  • the plurality of ejection units may eject the liquid supplied from the trunk tube.
  • the plurality of injection units may be provided in each of the plurality of branch pipes. In the branch pipe located on the uppermost side among the plurality of branch pipes, the main direction defined by the center of the spray angle in the plurality of jetting units that jet the liquid may be inclined toward the bottom side.
  • FIG. 1 is a diagram showing an outline of an exhaust gas treatment apparatus 100 in the first embodiment.
  • FIG. 1 is a front view of the exhaust gas treatment apparatus 100.
  • FIG. 1 shows a cross section of the exhaust gas treatment apparatus 100.
  • the trunk tube 20, the branch tube 22, the injection unit 24, the liquid introduction unit 28, and the baffle 29 show side surfaces instead of cross sections.
  • the exhaust gas introduction part 16 provided before the paper surface of the reaction tower 10 is shown with a dotted line.
  • the longitudinal direction of the reaction tower 10 is the z direction.
  • the z direction is equal to the height direction from the bottom 14 side to the top 12 side of the reaction tower 10.
  • the x and y directions are perpendicular to each other.
  • the x, y and z directions constitute a right-handed system.
  • the z direction is a direction perpendicular to a plane having x and y directions.
  • the z direction may be a direction perpendicular to the floor of the ship or a direction perpendicular to the ground.
  • the z direction is not limited to the examples of these directions.
  • the z direction may be a direction parallel to the ground.
  • the + z direction may be referred to as “upper”, “upward”, or “upper”, and the ⁇ z direction may be referred to as “lower”, “lower”, “lower”, or “bottom”.
  • the exhaust gas treatment apparatus 100 includes a reaction tower 10, a reducer unit 30, a flue unit 40, and an upper liquid return structure 60.
  • the upper liquid return structure 60 includes a flue protrusion 42 or an upper liquid return ring 50 described later.
  • the upper liquid return structure 60 of this example is a flue protrusion 42.
  • the reaction tower 10 and the flue section 40 of this example have a cylindrical internal space 15 extending in the height direction.
  • the reducer part 30 of this example has the internal space 15 of truncated cone shape.
  • the internal space 15 in the reaction tower 10, the reducer part 30 and the flue part 40 of this example has a common central axis 11.
  • the central axis 11 in this example is parallel to the z direction.
  • the central axis 11 in this example is also the central axis of the trunk tube 20.
  • the distance from the central axis 11 to the inner wall of the reaction tower 10 is constant.
  • the distance from the central axis 11 to the inner walls of the flue 40 and the flue protrusion 42 is constant.
  • the distance from the central axis 11 to the inner wall of the reducer unit 30 is constant. Note that the distance from the central axis 11 to the inner wall of the reducer portion 30 gradually decreases as the direction proceeds in the + z direction.
  • the reaction tower 10 has an exhaust gas introduction part 16 on the side surface on the bottom part 14 side.
  • the exhaust gas introduction part 16 may be a conduit having a rectangular cross section when the reaction tower 10 is viewed from the front.
  • the exhaust gas introduction part 16 may have a longitudinal part extending in a direction perpendicular to a rectangular cross section. In this example, the longitudinal part of the exhaust gas introduction part 16 is parallel to the x direction.
  • the longitudinal part of the exhaust gas introduction part 16 of this example has an inner side wall 17 and an outer side wall 18.
  • the outer side wall 18 of the exhaust gas introduction part 16 extends in the tangential direction of the outer diameter of the reaction tower 10.
  • the inner side wall 17 of the exhaust gas introduction part 16 extends in a direction intersecting with the side wall of the reaction tower 10.
  • the exhaust gas is introduced into the reaction tower 10 from the exhaust gas introduction part 16 located on the bottom 14 side.
  • the exhaust gas may be exhaust gas discharged from a power device such as a ship engine.
  • the exhaust gas is introduced into the reaction tower 10 from the exhaust gas introduction unit 16 so as to swirl in a predetermined swirling direction inside the reaction tower 10.
  • the exhaust gas of this example rises while spirally turning in the internal space 15 of the reaction tower 10. By exhausting the liquid inside the reaction tower 10, the exhaust gas is washed. Thereafter, the exhaust gas is discharged from the flue portion 40 to the outside of the exhaust gas processing apparatus 100.
  • the reducer unit 30 is provided above the reaction tower 10.
  • the reducer part 30 may be a joint part that connects two cylinders having different diameters.
  • the reducer portion 30 has a small diameter portion 32 at an end portion in the height direction, and has a large diameter portion 34 at an end portion in the direction opposite to the height direction.
  • the small diameter part 32 of the reducer part 30 is connected to the flue part 40, and the large diameter part 34 of the reducer part 30 is connected to the reaction tower 10. That is, the reducer section 30 of this example connects the reaction tower 10 and the flue section 40 having an inner diameter smaller than that of the reaction tower 10.
  • the inner diameter can be gradually reduced from the upper part 12 of the reaction tower 10 to the flue section 40. Therefore, the pressure loss in the exhaust gas treatment device 100 can be reduced by directly connecting the reaction tower 10 and the flue section 40 as compared with the case where the inner diameter of the cylinder changes discontinuously in the height direction.
  • a part of the flue section 40 is provided extending to the reducer section 30. That is, a part of the flue portion 40 extending in the ⁇ z direction from the top of the reducer portion 30 is referred to as a flue protrusion 42.
  • the remaining part of the flue section 40 is provided above the reducer section 30.
  • the flue protrusion part 42 and the reducer part 30 may be fixed.
  • the outer diameter of the flue protrusion 42 and the inner diameter of the small diameter portion 32 of the reducer portion 30 coincide.
  • the reaction tower 10 is not provided with a liquid return structure, but the reducer section 30 is provided with a liquid return structure.
  • the upper liquid return structure 60 of this example is a flue protrusion 42 provided in the reducer part 30.
  • the exhaust gas treatment apparatus 100 of this example is particularly suitable for a ship or the like that has no sufficient installation space.
  • the mist-like liquid may be easily discharged from the flue portion 40 to the outside.
  • the exhaust gas treatment apparatus 100 of this example since the upper liquid return structure 60 is provided, the mist-like liquid discharged outside from the flue portion 40 can be reduced.
  • the reaction tower 10 of this example has a length in the height direction from the bottom 14 to the top 12 of 3 [m] and an inner diameter of 700 [mm].
  • the reducer portion 30 of this example has a length in the height direction from the large diameter portion 34 to the small diameter portion 32 of 654 [mm].
  • the inner diameter of the small diameter portion 32 of the reducer portion 30 may be about 60% of the large diameter portion 34.
  • the inner diameter of the small diameter portion 32 of the reducer portion 30 of this example is 420 [mm].
  • the length from the uppermost part (position of the small diameter part 32) of the reducer part 30 to the lower end of the flue protrusion 42 is referred to as the protrusion length of the flue protrusion 42.
  • the exhaust gas treatment apparatus 100 includes a drainage outlet 19, a trunk pipe 20, a branch pipe 22, an injection part 24, a liquid introduction part 28, and a baffle 29.
  • the bottom part 14 of the reaction tower 10 may function as a drainage storage part that temporarily stores the liquid that has been dropped after being jetted inside the reaction tower 10. The liquid stored in the bottom 14 may finally be discharged out of the reaction tower 10 from the drainage outlet 19.
  • the liquid introduction part 28 of this example is introduced into the inside from the side surface of the reaction tower 10 in the vicinity of the bottom 14 of the reaction tower 10.
  • the liquid introducing portion 28 in this example is a tube bent into an L shape.
  • the liquid introduction part 28 of this example is watertightly connected to the trunk pipe 20 in parallel with the central axis 11. Seawater, lake water, river water, or alkaline liquid is introduced into the liquid introduction unit 28 from the outside of the reaction tower 10 using a pump or the like.
  • the liquid introduction unit 28 and the trunk tube 20 are fluidly connected, and the liquid introduced into the liquid introduction unit 28 is supplied to the trunk tube 20.
  • the plurality of branch pipes 22 are provided extending from the outer wall of the trunk pipe 20 toward the inner wall of the reaction tower 10. In this example, one end in the longitudinal direction of the branch pipe 22 may be welded to the trunk pipe 20. In this example, four branch pipes 22-A, 22-B, 22-C and 22-D are provided at the same height position. The four branch pipes 22-A to 22-D form a cross when the trunk pipe 20 is viewed from above. Note that the branch pipe 22-D is omitted in FIG.
  • the branch pipes 22-1A to 22-nA in this example are provided so as to overlap in the height direction.
  • the branch pipes 22-1A to 22-nA of the present example are provided at different height positions spaced apart at a constant interval in the height direction.
  • n is a natural number of 2 or more.
  • n 8.
  • the pitch in the height direction of the branch pipes 22 may be 0.3 [m].
  • the branch pipes 22-1B to 22-nB are also provided at different height positions by a predetermined pitch. The same applies to the branch pipe 22-1C to the branch pipe 22-nC and the branch pipe 22-1D to the branch pipe 22-nD.
  • a plurality of injection units 24 are provided in each of the plurality of branch pipes 22.
  • two jet parts 24 are provided in one branch pipe 22.
  • the number of the injection parts 24 provided in one branch pipe 22 is not limited to two, and may be three or more.
  • the injection unit 24 may be connected to the branch pipe 22 by screwing means, or may be connected to the branch pipe 22 by welding.
  • the injection unit 24 injects the liquid supplied from the trunk tube 20 inside the reaction tower 10.
  • the ejected liquid changes into a fine water droplet or a mist.
  • sulfur oxides and the like in the exhaust gas are absorbed by the liquid.
  • exhaust gas can be washed.
  • the ejection unit 24 may be a spray nozzle that ejects liquid in an empty cone shape.
  • the injection port of the injection part 24 is provided in the part which attached
  • the injection unit 24 may inject the liquid so as to assist the swirling flow of the exhaust gas.
  • FIG. 2 is a diagram showing an outline of the exhaust gas treatment device 110 in the second embodiment.
  • the exhaust gas treatment device 110 of this example does not have the flue protrusion 42.
  • the bottom part of the flue part 40 of this example is fixed on the small diameter part 32 of the reducer part 30.
  • the inner diameter of the flue portion 40 and the inner diameter of the small diameter portion 32 of the reducer portion 30 coincide.
  • the upper liquid return structure 60 in this example is an upper liquid return ring 50. This is different from the first embodiment. Other points are the same as in the first embodiment.
  • the upper liquid return ring 50 has a flange portion 52 and a cylindrical portion 54.
  • the upper liquid return ring 50 protrudes from the inner wall of the reducer part 30.
  • the upper liquid return ring 50 is provided in a ring shape on the inner wall of the reducer portion 30.
  • a circumferential portion of the outer diameter of the flange portion 52 is fixed in contact with the inner wall of the reducer portion 30.
  • the flange portion 52 may be passed through the reducer portion 30. That is, the outer diameter of the flange portion 52 may protrude from the outer wall of the reducer portion 30.
  • the protruding portion may be fixed to the reducer portion 30 by a fixing member.
  • the cylindrical portion 54 is provided in contact with the inner diameter of the flange portion 52.
  • the cylindrical portion 54 of this example is provided closer to the central axis 11 than the inner diameter of the flange portion 52.
  • the shape of the cylindrical portion 54 may be a cylindrical tube or a truncated cone tube.
  • the cylindrical part 54 of this example is a cylindrical cylinder.
  • the upper liquid return ring 50 of this example has a function of preventing the mist-like liquid from being discharged from the flue portion 40 to the outside.
  • the upper liquid return ring 50 prevents the mist-like liquid from rising near the inner surface of the reducer unit 30.
  • the upper liquid return ring 50 of this example has an opening 56 in the flange portion 52.
  • the opening 56 is provided through the flange portion 52. By providing the opening 56, the liquid staying in the flange portion 52 can fall downward due to its own weight. The dropped liquid is finally discharged out of the exhaust gas treatment device 110 from the drainage outlet 19.
  • the liquid return structure is provided in the reducer section 30 but is not provided in the reaction tower 10.
  • the upper liquid return structure 60 of this example is an upper liquid return ring 50 provided in the reducer unit 30.
  • FIG. 3 is a diagram showing an outline of the exhaust gas treatment device 120 in the third embodiment.
  • the upper liquid return structure 60 of this example includes both the flue protrusion 42 of the first embodiment and the upper liquid return ring 50 of the second embodiment. In this respect, this example is different from the first and second embodiments. Since this example has both the flue protrusion 42 and the upper liquid return ring 50, the liquid discharged outside from the flue 40 can be further reduced than in the first and second embodiments. In addition, as in the first and second embodiments, the length in the height direction of the reaction tower 10 can be reduced while providing a liquid return structure.
  • FIG. 4 is a diagram showing an outline of the exhaust gas treatment device 130 in the fourth embodiment.
  • the exhaust gas treatment device 130 of this example includes a flue protrusion 42 as the upper liquid return structure 60 and a lower liquid return ring 70.
  • the exhaust gas treatment device 130 of this example is different from the first embodiment in that it includes a lower liquid return ring 70.
  • the lower liquid return ring 70 has the same function as the upper liquid return ring 50.
  • the lower liquid return ring 70 may have the same configuration as the upper liquid return ring 50.
  • the lower liquid return ring 70 has a flange portion 72 and a cylindrical portion 74.
  • the flange portion 72 has an opening 76.
  • the opening 76 is provided through the flange portion 72.
  • the lower liquid return ring 70 is provided in a ring shape on the inner wall of the reaction tower 10 and protrudes from the inner wall of the reaction tower 10.
  • the flange portion 72 is in contact with the inner wall of the reaction tower 10.
  • the outer diameter of the flange portion 72 of this example is fixed to the inner wall of the reaction tower 10.
  • the cylindrical portion 74 is provided in contact with the position of the inner diameter of the flange portion 72.
  • the cylindrical portion 74 of this example is connected to the flange portion 72 and is provided closer to the central axis 11 than the flange portion 72.
  • FIG. 5 is a diagram showing an outline of the exhaust gas treatment apparatus 140 in the fifth embodiment.
  • the exhaust gas treatment device 130 of this example includes an upper liquid return ring 50 as an upper liquid return structure 60 and a lower liquid return ring 70.
  • the exhaust gas treatment device 130 of this example is different from the second embodiment in that it includes a lower liquid return ring 70.
  • the upper liquid return ring 50 is the same as that of the second embodiment
  • the lower liquid return ring 70 is the same as that of the fourth embodiment.
  • the reaction tower 10 is provided with one lower liquid return ring 70. Therefore, the height in the height direction of the reaction column 10 can be reduced as compared with the case where a plurality of lower liquid return rings 70 are provided in the reaction column 10. Furthermore, in this example, since the reaction tower 10 has one lower liquid return ring 70 and the reducer section 30 has one upper liquid return ring 50, the liquid discharged from the flue section 40 can be discharged outside. This can be further reduced than in the second embodiment.
  • FIG. 6 is a diagram showing an outline of the exhaust gas treatment apparatus 150 in the sixth embodiment.
  • the upper liquid return structure 60 of this example has both the flue protrusion 42 and the upper liquid return ring 50.
  • the exhaust gas treatment apparatus 150 of this example includes a lower liquid return ring 70 in the reaction tower 10. This is different from the first to fifth embodiments.
  • the length in the height direction of the reaction tower 10 can be reduced as compared with the case where a plurality of lower liquid return rings 70 are provided in the reaction tower 10. Furthermore, the liquid discharged
  • the inner diameter of the flue protrusion 42 is R1
  • the inner diameter of the upper liquid return ring 50 is R2
  • the inner diameter of the lower liquid return ring 70 is R3.
  • the inner diameter is made smaller toward the upper part of the exhaust gas treatment device 150. That is, in this example, R1, R2, and R3 are smaller in this order.
  • R1, R2 and R3 satisfy the relationship of R1 ⁇ R2 ⁇ R3. Thereby, compared with the case where it is R2 ⁇ R1, R3 ⁇ R2, or R3 ⁇ R1, the pressure loss of the waste gas in the reaction tower 10 can be reduced.
  • the relationship of R1 ⁇ R2 ⁇ R3 may be applied in the third to fifth embodiments (FIGS. 3 to 5).
  • FIG. 7A is a view showing a cross section of the upper liquid return ring 50.
  • FIG. 7B is a view showing the upper surface of the upper liquid return ring 50.
  • the configuration of the upper liquid return ring 50 in the yz section (FIG. 7A) has already been described, and thus the description thereof is omitted.
  • the flange portion 52 is provided with a plurality of openings 56. Each center of the plurality of openings 56 may be provided on a circumference having a predetermined diameter. The predetermined diameter may be larger than the inner diameter of the flange portion 52 and smaller than the outer diameter of the flange portion 52.
  • the centers of the plurality of openings 56 may be closer to the inner diameter than the outer diameter of the flange portion 52.
  • the predetermined diameter at which the centers of the plurality of openings 56 are provided is larger than the inner diameter of the flange portion 52 and not more than half of the sum of the inner diameter and the outer diameter of the flange portion 52.
  • FIG. 8A to FIG. 8C are cross-sectional views showing modifications of the upper liquid return ring 50.
  • FIG. The cylindrical portion 54 in FIGS. 8A and 8B has a truncated cone shape having an inner side surface 55 parallel to the inner wall of the reducer portion 30. Thereby, the pressure loss from the large diameter part 34 of the reducer part 30 to the small diameter part 32 can be reduced.
  • the cylindrical portion 54 in FIG. 8C has a cylindrical shape having an inner side surface 55 parallel to the inner wall of the reaction tower 10.
  • the flange portion 52 is provided orthogonal to the inner wall of the reducer portion 30. Thereby, the internal diameter of the flange part 52 is located below the outer diameter.
  • a groove portion formed by the upper portion of the flange portion 52 and the outer surface 57 of the cylindrical portion 54 is a right angle in FIG. 8A and an acute angle in FIG. 8C.
  • the right-angle and acute-angle groove portions can easily store liquid as compared with the example of the obtuse-angle groove portion in FIG. Therefore, the liquid falls easily due to its own weight.
  • the upper liquid return ring 50 in FIG. 8B may have a portion that protrudes further outward from the outer diameter of the flange portion 52.
  • the protruding portion may be inserted into the reducer portion 30 and pulled out to the outside of the reducer portion 30 and the drawn portion may be screwed. Thereby, installation of the upper liquid return ring 50 is completed. Therefore, the upper liquid return ring 50 of FIG. 8B is easier to install on the reducer unit 30 than the examples of FIGS. 8A and 8C.
  • the angle ⁇ formed by the bottom portion of the flange portion 52 and the outer surface 57 of the cylindrical portion 54 is larger than the example of FIGS. 8A and 8B. Therefore, in the example of FIG. 8C, the liquid that rises in the vicinity of the inner wall of the reducer portion 30 and reaches the upper liquid return ring 50 is most easily collected.
  • FIG. 9A to FIG. 9C are cross-sectional views showing other modified examples of the upper liquid return ring 50.
  • 9A to 9C form an acute angle with the inner wall of the reducer portion 30.
  • FIG. Accordingly, the inner diameter of the flange portion 52 is located above the outer diameter of the flange portion 52.
  • the groove portion formed by the upper portion of the flange portion 52 and the outer surface 57 of the cylindrical portion 54 has an obtuse angle.
  • the cylindrical part 54 may be parallel to the reducer part 30.
  • the inner surface 55 and the outer surface 57 of the cylindrical portion 54 are parallel to the inner wall of the reducer portion 30.
  • the groove portion formed by the upper portion of the flange portion 52 and the outer surface 57 of the cylindrical portion 54 is a right angle.
  • the flange part 52 and the cylindrical part 54 are orthogonally crossed.
  • the liquid accumulates in a groove portion formed by the inner wall of the reducer portion 30 and the upper portion of the flange portion 52.
  • the accumulated liquid flows out from the opening 56 and sequentially travels along the lower surface of the flange portion 52, the inner wall of the reducer portion 30, and the inner wall of the reaction tower 10.
  • the liquid accumulated in the upper liquid return ring 50 can be discharged.
  • each opening 46 in the side wall 47 of the flue protrusion 42 is S1.
  • the area of each opening 56 of the upper liquid return ring 50 is S2.
  • S2 is the area of one opening 56 when the flange portion 52 is viewed from above.
  • the area of each opening 76 of the lower liquid return ring 70 is S3.
  • S3 is the area of one opening 76 when the flange portion 72 is viewed from above.
  • S1 is smaller than S2 and S3.
  • the particle size of the liquid tends to decrease as it goes upward in the height direction. Therefore, compared with the case where S1 is made larger than S2 and S3, the liquid collection performance can be improved.
  • the size of the opening area may satisfy the relationship of S1 ⁇ S2 ⁇ S3.
  • FIG. 12 (a) and 12 (b) are diagrams for explaining the main direction 26 in the injection section 24 of the branch pipe 22 located on the uppermost side 12 side.
  • the main direction 26 of the liquid ejected from the ejection unit 24 is defined by the center of the ejection angle 25 in the ejection unit 24.
  • the ejection angle 25 is generally known as an angle at which the liquid spreads in the vicinity of the ejection unit 24 such as a spray nozzle.
  • FIG. 12A shows an example in which the main direction 26 of the uppermost injection unit 24 is parallel to the xy plane.
  • FIG. 12B is an example in which the main direction 26 of the uppermost injection unit 24 is inclined to the bottom 14 side with respect to the example of FIG. In the example of FIG.

Abstract

Pour empêcher le rejet d'eau de mer atomisée ayant absorbé de l'oxyde de soufre ou similaire vers l'extérieur à partir d'une colonne de réaction, il arrive qu'une pluralité de structures de retour de fluide en forme d'anneau soit disposée à l'intérieur de la colonne de réaction. Cependant, la disposition d'une pluralité de structures de retour de fluide augmente la longueur dans la direction de la hauteur de la colonne de réaction, et par conséquent, il est difficile d'obtenir des colonnes de réaction à l'intérieur d'un compartiment dans un navire, où l'espace est limité. Ainsi, le dispositif de traitement de gaz d'échappement selon l'invention destiné au traitement d'un gaz d'échappement est équipé : d'une colonne de réaction qui présente un espace intérieur cylindrique s'étendant dans la direction de la hauteur depuis le côté sol de celle-ci, où le gaz d'échappement est introduit du côté supérieur de celle-ci, où le gaz d'échappement est rejeté, et purifie le gaz échappement, qui s'élève en tournant, en pulvérisant un fluide dans le gaz; un réducteur qui est connecté à la colonne de réaction est disposé au-dessus de la colonne de réaction; un conduit disposé de telle sorte qu'au moins une section de celui-ci soit située au-dessus du réducteur; et une structure supérieure de retour de fluide disposée dans le réducteur.
PCT/JP2017/003677 2016-03-15 2017-02-01 Dispositif de traitement de gaz d'échappement WO2017159099A1 (fr)

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JP2016-051492 2016-03-15
JP2016051492A JP2019076798A (ja) 2016-03-15 2016-03-15 排ガス処理装置

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CN109999643A (zh) * 2019-05-06 2019-07-12 新中天环保股份有限公司 一种脱酸塔烟气入口防堵降温装置及使用方法
CN110141956A (zh) * 2019-05-30 2019-08-20 广船国际有限公司 一种洗涤塔
EP3875166A4 (fr) * 2019-06-28 2022-01-26 Fuji Electric Co., Ltd. Appareil de traitement des gaz d'échappement et buse d'épurateur
CN115318047A (zh) * 2022-08-12 2022-11-11 铜陵有色金属集团股份有限公司 烟气洗涤设备

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Publication number Priority date Publication date Assignee Title
JP7276518B2 (ja) * 2020-01-21 2023-05-18 富士電機株式会社 排ガス処理装置

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