WO2017203837A1 - Dispositif de traitement de gaz d'échappement - Google Patents

Dispositif de traitement de gaz d'échappement Download PDF

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Publication number
WO2017203837A1
WO2017203837A1 PCT/JP2017/013750 JP2017013750W WO2017203837A1 WO 2017203837 A1 WO2017203837 A1 WO 2017203837A1 JP 2017013750 W JP2017013750 W JP 2017013750W WO 2017203837 A1 WO2017203837 A1 WO 2017203837A1
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WIPO (PCT)
Prior art keywords
exhaust gas
branch pipe
outer cylinder
gas treatment
branch
Prior art date
Application number
PCT/JP2017/013750
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English (en)
Japanese (ja)
Inventor
泰仁 田中
Original Assignee
富士電機株式会社
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Filing date
Publication date
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Publication of WO2017203837A1 publication Critical patent/WO2017203837A1/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
    • B01D53/74—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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids

Definitions

  • the present invention relates to an exhaust gas treatment apparatus.
  • Patent Document 1 Japanese Patent Laid-Open No. 06-190240
  • Patent Document 2 Japanese Patent Laid-Open No. 08-281055
  • the nozzle provided inside the reaction tower needs to be regularly maintained.
  • space and cost for installing the crane are required.
  • an exhaust gas treatment apparatus may include an outer cylinder.
  • the outer cylinder may have an internal space.
  • the internal space may extend in the height direction from the bottom side where the exhaust gas is introduced to the upper side where the exhaust gas is discharged.
  • the exhaust gas treatment apparatus may include a branch portion.
  • the branch part may have a branch pipe.
  • the branch pipe may be provided with an injection unit.
  • the injection unit may inject a liquid for treating exhaust gas into the internal space.
  • the outer cylinder may have an opening through which the branch pipe can enter and exit.
  • the exhaust gas treatment device may further include a trunk pipe.
  • the trunk pipe may be provided in the internal space of the outer cylinder.
  • the trunk tube may supply liquid to the branches.
  • the branch pipe may have an opening. Liquid may be able to communicate between the branch pipe and the trunk pipe through the opening of the branch pipe.
  • the branch pipe may be provided extending from the outer cylinder to the trunk pipe.
  • the opening of the branch pipe may be provided toward the bottom side of the outer cylinder.
  • the branch pipe may be provided extending from the outer cylinder so as to penetrate the trunk pipe.
  • the injection unit may not protrude beyond the outer diameter of the branch pipe in a plane orthogonal to the length direction of the branch pipe.
  • the outer cylinder may have a branch pipe receiving portion on the inner wall of the outer cylinder.
  • the branch pipe receiving part may fix the end part of the branch pipe extending to penetrate the trunk pipe.
  • the branch portion may further include a flange portion.
  • the flange portion may have a larger area than the opening through which the branch pipe in the outer cylinder can enter and exit.
  • the flange portion may be fixed to one end of the branch pipe.
  • the exhaust gas treatment apparatus may further include an outer sealing member between the flange portion and the outer wall of the outer cylinder.
  • the branch part may further include an inner sealing member between the branch pipe and the trunk pipe.
  • the exhaust gas treatment device may further include a trunk pipe.
  • the trunk tube may be provided outside the outer cylinder.
  • the trunk tube may supply liquid to the branches.
  • the branch pipe may be either the first branch pipe or the second branch pipe.
  • the first branch pipe may be provided toward the inner wall of the outer cylinder by extending the internal space from the outer wall of the outer cylinder in a first direction orthogonal to the height direction of the outer cylinder.
  • the second branch pipe may be provided toward the inner wall of the outer cylinder by extending the internal space from the outer wall of the outer cylinder in the second direction orthogonal to the first direction.
  • the exhaust gas treatment apparatus may have a plurality of sets having the first branch pipe and the second branch pipe adjacent in the height direction in the height direction.
  • a plurality of injection units may be provided in each of the first branch pipe and the second branch pipe.
  • the main direction of the liquid ejected by the ejecting section closest to the position where the first branch pipe and the second branch pipe overlap in the height direction is the main direction of the liquid ejected by the ejecting section closest to the inner wall of the outer cylinder. You may face the bottom side rather than the direction.
  • FIG. 2 is a top view of the AA ′ cross section of FIG. 1. It is an enlarged view of the area
  • FIG. 6 is a top view of the fixing portion 48. It is an enlarged view of field B in the 1st modification of a 1st embodiment. It is an enlarged view of field B in the 2nd modification of a 1st embodiment. It is sectional drawing of the waste gas processing apparatus 110 in 2nd Embodiment.
  • FIG. 9 is a top view of a section CC ′ in FIG. 8. It is an enlarged view of the area
  • FIG. (A) is a top view of the right half of the region D.
  • FIG. (B) is a side view of the right half of the region D.
  • FIG. It is sectional drawing of the waste gas processing apparatus 120 in 3rd Embodiment. It is a top view of the EE 'cross section of FIG. It is an enlarged view of the area
  • region F of FIG. (A) is a figure which shows the case where the main direction 82 is mutually substantially parallel in the injection part 34.
  • FIG. (B) is a figure which shows the case where the main direction 82 of the injection part 34 near the center axis
  • FIG. 1 is a cross-sectional view of an exhaust gas treatment apparatus 100 according to the first embodiment.
  • the exhaust gas treatment apparatus 100 of the present example removes environmental load substances such as sulfur oxide (SOx) contained in the exhaust gas discharged from a power device such as a ship engine, so that the exhaust gas has a relatively low environmental load outside the ship. It is a device for discharging.
  • SOx sulfur oxide
  • FIG. 1 although the reducer part 10 and the outer cylinder 12 show a cross section, other structures show a side surface.
  • the exhaust gas treatment apparatus 100 of this example includes a reducer section 10, an outer cylinder 12, a branch section 30, a trunk pipe 40, a liquid introduction section 46, and a fixing section 48.
  • the outer cylinder 12 has an internal space 15 extending in the height direction.
  • the outer cylinder 12 has an outer wall 22 and an inner wall 24.
  • the outer cylinder 12 of this example includes an upper outer cylinder 12-A and a lower outer cylinder 12-B.
  • a trunk pipe fixing portion 42 is provided on the inner wall 24 of the upper outer cylinder 12-A.
  • the height direction from the bottom 16 side to the top 14 side of the outer cylinder 12 is defined as the + z direction.
  • the direction opposite to the height direction is taken as the ⁇ z direction.
  • the direction parallel to the height direction is simply referred to as the z direction without using “ ⁇ ”.
  • the + z direction may be referred to as “up” or “upward”
  • the ⁇ z direction may be referred to as “down” or “downward”.
  • 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 x and y directions are perpendicular to each other.
  • the z direction is a direction perpendicular to the plane configured in the x and y directions.
  • the x, y and z directions constitute a right-handed system.
  • the lower outer cylinder 12-B of this example has an exhaust gas inlet 17 on the side surface and a drainage outlet 18 on the bottom 16.
  • the exhaust gas inlet 17 is an area where the exhaust gas inlet pipe is connected to the lower outer cylinder 12-B.
  • the exhaust gas introduction pipe is a pipe for introducing exhaust gas discharged from a ship engine or the like into the lower outer cylinder 12-B.
  • the flange portion of the exhaust gas inlet 17 is indicated by a broken line.
  • the exhaust gas is introduced into the internal space 15 of the outer cylinder 12 from the exhaust gas inlet 17.
  • the exhaust gas may swirl upward in the + z direction in the internal space 15 of the outer cylinder 12. Exhaust gas is more efficiently cleaned because the probability of gas-liquid contact is higher when the internal space 15 is swirled than when the internal space 15 of the outer cylinder 12 is linearly raised in the + z direction.
  • the liquid introduction part 46 and the fixing part 48 are provided inside the lower outer cylinder 12-B.
  • the liquid introduction part 46 of this example is introduced into the inside from the side surface of the lower outer cylinder 12-B in the vicinity of the bottom 16 of the lower outer cylinder 12-B.
  • the liquid introducing portion 46 in this example is a tube bent into an L shape in the yz plane. Seawater, lake water, river water, or alkaline liquid is introduced into the liquid introduction unit 46 from the outside of the exhaust gas treatment apparatus 100 using a pump or the like.
  • the liquid in this example is a liquid for treating exhaust gas.
  • the liquid introduction unit 46 and the trunk tube 40 are fluidly connected, and the liquid introduced into the liquid introduction unit 46 is supplied to the trunk tube 40.
  • the vicinity of the bottom 16 of the outer cylinder 12 may function as a drainage reservoir that temporarily stores the liquid that has been dropped after being sprayed inside the outer cylinder 12.
  • the drainage outlet 18 may protrude further in the ⁇ z direction than the bottom 16 of the lower outer cylinder 12-B.
  • the liquid stored in the vicinity of the bottom portion 16 may finally be discharged out of the exhaust gas treatment apparatus 100 from the drainage outlet 18.
  • the fixing unit 48 in this example is installed in the liquid introduction unit 46.
  • the fixing portion 48 of this example is provided on the bottom 16 side of the exhaust gas inlet 17.
  • the fixing portion 48 of this example has a function of fixing the position of the liquid introduction portion 46 with respect to the outer cylinder 12.
  • a plurality of branch portions 30 and a stem tube 40 are provided in the internal space 15 of the upper outer cylinder 12-A.
  • the central axis in the xy plane of the trunk tube 40 of this example coincides with the central axis 11 of the columnar inner space 15 in the outer cylinder 12.
  • the trunk pipe 40 of this example is provided in the center of the internal space 15 where the exhaust gas flow that swirls up does not flow. Thereby, compared with the case where the trunk pipe 40 is provided outside the outer cylinder 12, the space volume which the exhaust gas processing apparatus 100 occupies in the ship can be reduced. Therefore, the space in the ship can be used effectively.
  • the trunk tube 40 in this example is a hollow cylinder extending in the z direction.
  • the liquid supplied from the liquid inlet 46 is transported in the + z direction.
  • a plurality of branch portions 30 are connected to the trunk tube 40 of this example.
  • the plurality of branches 30 in this example are fluidly connected to the trunk tube 40 such that the trunk tube 40 supplies liquid to the plurality of branches 30.
  • the branch part 30 may include a branch pipe 32, an injection part 34, a flange part 36, and the like.
  • the plurality of branch pipes 32 are provided extending from the outer wall 22 of the upper outer cylinder 12-A to the main pipe 40. More specifically, the plurality of branch pipes 32 extend from the flange portion 36 in contact with the outer wall 22 to the trunk pipe 40.
  • four branch pipes 32-A, a branch pipe 32-B, a branch pipe 32-C, and a branch pipe 32-D are provided at the same height position.
  • the four branch pipes 32-A to 32-D form a substantially cross shape when the trunk pipe 40 is viewed from above. In FIG. 1, the branch pipe 32-D located in the back of the drawing is not shown.
  • the plurality of branch pipes 32 are provided so as to overlap in the height direction.
  • the plurality of branch pipes 32-1A to 32-nA are provided at different height positions with a predetermined interval in the height direction.
  • n is a natural number of 2 or more.
  • n 5.
  • the pitch in the height direction of the branch pipe 32 may be 0.3 [m].
  • the branch pipes 32-1B to 32-nB of this example are also provided at different height positions by a predetermined pitch.
  • the branch portion 30 may be expressed using a symbol such as nA as in the case of the branch pipe 32.
  • the branch part 30-nA has a branch pipe 32-nA.
  • Each of the plurality of branch parts 30 has one branch pipe 32 and a plurality of injection parts 34.
  • two injection parts 34 are provided on one branch pipe 32.
  • the number of the injection parts 34 which one branch part 30 has is not limited to two, Three or more may be sufficient.
  • the injection unit 34 may be connected to the branch pipe 32 by screwing means, or may be connected to the branch pipe 32 by welding.
  • the ejection unit 34 ejects the liquid supplied from the trunk tube 40 in the inner space 15 of the outer cylinder 12.
  • the jetted liquid changes into a fine water droplet or mist.
  • sulfur oxides and the like in the exhaust gas are absorbed by the liquid.
  • exhaust gas can be washed.
  • the ejection unit 34 may be a spray nozzle that ejects liquid in an empty cone shape.
  • the injection port of the injection part 34 is provided in the part which attached
  • a flange portion having a diameter larger than the diameter of the stem tube 40 is provided at the top of the stem tube 40.
  • the flange portion of the trunk tube 40 may have a disk shape.
  • the edge portion of the flange portion may be fixed by a trunk tube fixing portion 42 extending from the inner wall 24 to the central axis 11.
  • the stem tube 40 and the stem tube fixing part 42 may be fixed by a fixing tool.
  • the trunk tube fixing portion 42 of this example is not a ring-shaped member but a plate member that protrudes from the inner wall 24 in the x direction and the y direction.
  • the stem tube 40 and the liquid introduction portion 46 are fixed in the internal space 15 by the stem tube fixing portion 42 and the fixing portion 48.
  • the reducer unit 10 is provided on the upper outer cylinder 12-A.
  • the large diameter portion at the end in the ⁇ z direction of the reducer portion 10 is connected to the upper outer cylinder 12-A.
  • the small diameter part in the edge part of the + z direction of the reducer part 10 is connected to the flue part provided on the reducer part 10.
  • the central axis in the xy plane of the reducer unit 10 of this example coincides with the central axis 11 of the outer cylinder 12.
  • the reducer unit 10 of this example has a truncated cone-shaped internal space that gradually decreases as the radius in the xy plane advances in the + z direction.
  • the reducer unit 10 may have a function of reducing the pressure loss in the exhaust gas treatment device 100 as compared to the case where the flue unit and the upper outer cylinder 12-A are directly connected.
  • the outer cylinder 12 of this example has a length in the height direction from the bottom 16 to the top 14 of 3 [m], and the inner diameter of the internal space 15 is 700 [mm]. Further, the reducer portion 10 of this example has a length in the height direction of 654 [mm], and the inner diameter of the small diameter portion is 420 [mm].
  • FIG. 2 is a top view of the AA ′ cross section of FIG.
  • the upper outer cylinder 12-A has an opening 21 through which the branch pipe 32 can enter and exit.
  • the opening 21 is provided so as to penetrate from the inner wall 24 to the outer wall 22 of the upper outer cylinder 12-A.
  • One opening 21 of this example is provided corresponding to one branch pipe 32.
  • the flange portion 36 in this example is fixed to one end portion of the branch pipe 32.
  • the flange portion 36 may have a disk shape.
  • one end portion of the branch pipe 32 is in-row connected to the flange portion 36 (that is, connected by engaging the convex portion and the concave portion).
  • the flange portion 36 may have a larger area than the opening 21 through which the branch pipe 32 in the upper outer cylinder 12-A can enter and exit.
  • the edge part of the flange part 36 of this example overlaps with the outer cylinder flange receiving part 26 provided around the opening 21 in the outer wall 22 in the x or y direction.
  • an outer sealing member 55 is provided between the flange portion 36 and the outer cylinder flange receiving portion 26 on the outer wall 22 of the upper outer cylinder 12-A.
  • the outer sealing member 55 may be a general annular O-ring or the like.
  • the outer sealing member 55 may have a watertight sealing function that prevents liquid released into the internal space 15 from leaking out of the outer cylinder 12 through the opening 21.
  • the outer cylinder flange receiving portion 26 and the flange portion 36 of this example are fixed to each other by the fixture 51 in a state where the outer sealing member 55 is sandwiched therebetween.
  • the outer cylinder flange receiving portion 26 has an opening having the same size as the opening 21.
  • the branch pipe 32 of this example has an opening 37 at the other end of the branch pipe 32.
  • the branch pipe 32 may pass through the opening 41 of the trunk pipe 40.
  • the opening 37 may be located inside the trunk tube 40.
  • the liquid for cleaning the exhaust gas can communicate between the branch pipe 32 and the trunk pipe 40 via the opening 37. Therefore, the liquid is ejected from the ejecting section 34 via the trunk pipe 40 and the branch pipe 32.
  • the branch pipe 32 and the trunk pipe 40 may partially overlap in the z direction.
  • the branch portion 30 of this example further includes an inner sealing member 35.
  • the inner sealing member 35 may be provided in a ring shape at a position between the branch pipe 32 and the trunk pipe 40.
  • the inner sealing member 35 may be a general O-ring or the like, and may have a function of watertight sealing between the inside of the trunk tube 40 and the inner space 15 of the outer cylinder 12.
  • FIG. 3 is an enlarged view of region B in FIG.
  • FIG. 3 is a cross-sectional view of the outer cylinder 12, the branch portion 30, and the trunk tube 40 in a yz plane passing through the central axis 11.
  • the injection part 34 shows the outline which is not a cross section.
  • the injection unit 34 of the branch 30-4A has an injection port in the ⁇ x direction
  • the injection unit 34 of the branch 30-4C has an injection port in the + x direction.
  • the height position of the end of the branch pipe 32 in the + z direction is H 0 .
  • the maximum height is referred to as h 1.
  • the maximum height h 1 of the opening 21 is larger than the maximum height h 2 of the injection unit 34. Therefore, when the fixing tool 51 is removed, the branch portion 30 can be taken out from the outer cylinder 12 through the opening 41 of the trunk tube 40 and the opening 21 of the outer cylinder 12.
  • the branch part 30 can be taken out from the outer cylinder 12 using the flange part 36 as a grip part.
  • maintenance of the injection unit 34 refers to operations such as replacing the injection unit 34 and cleaning the injection unit 34 in order to maintain the injection performance of the injection unit 34.
  • FIG. 4 is a cross-sectional view of the branch portion 30-4A.
  • the injection part 34 shows the outline which is not a cross section similarly to FIG. FIG. 4 makes the configuration of one branch 30 more clear.
  • the branch portion 30 of this example includes a fixing hole 31 through which the fixing tool 51 passes and a groove portion 38 in which the outer sealing member 55 is provided, in addition to the above-described configuration.
  • FIG. 5 is a top view of the fixing portion 48.
  • the fixing part 48 fixes the position of the liquid introduction part 46 in the internal space 15. Since the liquid introducing portion 46 and the stem tube 40 are fixed to each other, the fixing portion 48 has a function of fixing the stem tube 40 on the bottom portion 16 side.
  • the fixing part 48 has a plurality of openings 49. Therefore, the fixing part 48 also has a function of dropping the liquid scattered from the upper part 14 side to the bottom part 16.
  • Each opening 49 in this example has a band shape of a quarter of the circumference, but the shape of the opening 49 may not be limited to this shape.
  • FIG. 6 is an enlarged view of the region B in the first modification of the first embodiment.
  • the branch part 30 of this example has an inner sealing member 35 at the edge of the opening 37 at the end of the branch pipe 32.
  • the opening 41 of the trunk tube 40 of the present example has a small opening 62 having a diameter equal to or smaller than the diameter of the opening 37 of the branch tube 32 and the outer diameter of the branch tube 32 or larger than this.
  • a large opening 64 having a large diameter. This is different from the first embodiment.
  • it is advantageous in that attachment and removal of the branch pipe 32 in the opening 41 is easier than in the first embodiment.
  • the same effect as that of the first embodiment can also be obtained.
  • FIG. 7 is an enlarged view of the region B in the second modification of the first embodiment.
  • the opening 37 is provided toward the bottom 16 side of the outer cylinder 12. This is different from the first embodiment.
  • This example is advantageous in that the liquid supplied from the bottom 16 side can be easily taken into the branch pipe 32. In this example, the same effect as that of the first embodiment can also be obtained.
  • FIG. 8 is a cross-sectional view of the exhaust gas treatment device 110 in the second embodiment.
  • the branch pipe 32 of this example is provided extending from the outer cylinder 12 so as to penetrate the trunk pipe 40. Specifically, the branch pipe 32 of this example extends from one predetermined position of the outer wall 22 through the central axis 11 to another predetermined position that is point-symmetric with the one predetermined position with respect to the central axis 11. To do.
  • a plurality of sets each having a branch pipe 32-na as a first branch pipe and a branch pipe 32-nb as a second branch pipe adjacent in the z direction are provided in the z direction. More specifically, the branch pipe 32-na is provided toward the inner wall 24 by extending the inner space 15 from the outer wall 22 in the x direction as the first direction.
  • the two branch pipes 32 may be taken out from the x and y directions at a certain height position. Therefore, for example, when the branch pipe 32 is taken out in two directions of the ⁇ x direction and the + y direction, the + x direction and the ⁇ y direction of the outer cylinder 12 can come into contact with the side wall inside the hull. Therefore, it is possible to arrange the outer wall 22 of the outer cylinder 12 as close as possible to the wall surface in the ship while securing a work space for taking out the branch pipe 32. Therefore, it is advantageous in that the degree of freedom of arrangement of the exhaust gas treatment device 110 is improved as compared with the first embodiment.
  • the outer cylinder 12 of this example has a branch pipe receiving portion 28 on the inner wall 24 that fixes the end of the branch pipe 32 to the inner wall 24.
  • An end portion of the branch pipe 32 fixed at the branch pipe receiving portion 28 is an end portion different from the one end portion provided with the flange portion 36.
  • the branch pipe receiving portion 28 may have a function of accurately and stably temporarily fixing the position of each branch pipe 32 before the outer cylinder flange receiving portion 26 and the flange portion 36 are fixed by the fixture 51. .
  • FIG. 9 is a top view of the CC ′ cross section of FIG.
  • one set of the branch portion 30-3a and the branch portion 30-3b is described, but the other set of the branch portions 30 may have the same configuration.
  • the main direction 82 of the liquid 80 ejected by the ejecting portion 34 at a position in the ⁇ x direction from the central axis 11 is the + y direction.
  • the main direction 82 is defined by the center of the injection angle in the injection unit 34.
  • the ejection unit 34 ejects the liquid 80 in a symmetrical triangle shape from the one vertex with the ejection port of the ejection unit 34 as one vertex.
  • the main direction 82 starts from the one vertex and bisects the injection angle.
  • the main direction 82 of the injection unit 34 at a position in the + x direction with respect to the central axis 11 is the -y direction.
  • the main direction 82 of the injection unit 34 at the position in the ⁇ y direction with respect to the central axis 11 is in the ⁇ x direction, and the position in the + y direction with respect to the central axis 11 is.
  • the main direction 82 of the injection unit 34 is the + x direction.
  • FIG. 10 is an enlarged view of region D in FIG. Moreover, the position of the injection part 34 in the branch part 30-3b is shown by a broken line.
  • the branch part 30 of this example has an opening 37 on the bottom 16 side of the branch pipe 32 that overlaps the trunk pipe 40 in the z direction. The liquid is supplied from the trunk tube 40 to the branch tube 32 through each opening 37.
  • the opening 37 of the branch pipe 32 is circular in the xy plane, and the center of the opening 37 coincides with the central axis 11.
  • the inner sealing member 35 provided in contact with the branch pipe 32 has the largest outer diameter, so that the opening 21 has a larger inner diameter than the inner sealing member 35.
  • FIG. 11A is a top view of the right half portion of the region D.
  • FIG. FIG. 11B is a side view of the right half of the region D.
  • the injection part 34 of this example does not protrude outwardly from the outer diameter 33 of the branch pipe 32 in a plane orthogonal to the length direction of the branch pipe 32.
  • the injection part 34 of this example is located inside the outer diameter 33 of the branch pipe 32 when the branch pipe 32 is cut along an xz plane orthogonal to the length direction of the branch pipe 32-3b.
  • the injection unit 34 may be provided by being embedded in the branch pipe 32. Thereby, in a state where the injection unit 34 is installed in the branch pipe 32, the branch part 30 can be taken in and out of the outer cylinder 12.
  • FIG. 12 is a cross-sectional view of the exhaust gas treatment device 120 in the third embodiment.
  • the exhaust gas treatment device 120 of this example has a trunk pipe 70 provided outside the outer cylinder 12 in place of the trunk pipe 40 and the liquid introduction part 46. Further, the trunk pipe 70 of this example has a water supply branch pipe 73 connected to the trunk pipe 70 and the branch pipe 32 in order to supply liquid to the branch pipe 32. Note that a flange portion 76 connected to the flange portion 36 of the branch pipe 32 is provided at the end of the water supply branch pipe 73. This point is mainly different from the first and second embodiments. In this example, since the trunk pipe 70 is provided outside the outer cylinder 12, the trunk pipe 70 can be cleaned, repaired, and replaced more easily than in the first and second embodiments.
  • each of the branch pipe 32-na as the first branch pipe and the branch pipe 32-b as the second branch pipe is provided with a plurality of injection units 34.
  • the injection unit 34 of this example is provided in a plurality in the x or y direction of each branch pipe 32 with the position where the branch pipes 32-na and 32-nb overlap in the height direction as a center of point symmetry.
  • the position where the branch pipe 32-na and the branch pipe 32-nb overlap in the height direction coincides with the central axis 11.
  • the branch part 30-3b of this example has the additional injection part 34 in the position close
  • FIG. 13 is a top view of the EE ′ cross section of FIG.
  • the branch pipe 32 of this example also has an opening in the flange portion 36.
  • An opening is also provided in the flange portion 76 of the water supply branch pipe 73.
  • the liquid is supplied from the trunk pipe 70 to the branch pipe 32 through the opening of the flange portion 36 and the opening of the flange portion 76.
  • a sealing member 75 for watertight sealing may be provided between the flange portion 36 and the flange portion 76.
  • the flange portion 76, the flange portion 36, and the outer cylinder flange receiving portion 26 may be fixed by the fixing tool 51.
  • FIG. 14 is an enlarged view of a region F in FIG.
  • FIG. 14 is also a cross-sectional view of the region F in FIG.
  • the injection part 34 shows the outline which is not a cross section.
  • the injection unit 34 may be embedded in the branch pipe 32 as in the second embodiment.
  • FIG. 15A is a diagram illustrating a case where the main directions 82 are substantially parallel to each other in the injection unit 34.
  • FIG. 15B is a diagram illustrating a case where the main direction 82 of the injection unit 34 close to the central axis 11 faces the bottom 16 side.
  • the main direction 82 of the ejection unit 34 may be parallel to the height direction of the cone of the liquid 80 spreading in an empty cone shape.
  • only the branch 30-3b is shown for easy understanding.
  • the injection portion 34-3b-R1 that is closest to the central axis 11 among the injection portions 34 that are located in the + y direction from the central axis 11 is defined as the inner wall of the outer cylinder 12.
  • the one closest to 24 is referred to as an injection section 34-3b-R3.
  • the injection part 34-3b-R2 is set as the injection part 34-3b-R2.
  • the main direction 82 of the injection unit 34 is parallel to the x direction.
  • the main directions of the injection unit 34-3b-R1 and the injection unit 34-3b-L1 are the injection units 34-3b-R2, 34-3b-R3, 34 -3b-L2 and 34-3b-L3 face the bottom 16 side from the main direction 82.
  • the main portion 82 of the injection portion 34 in the vicinity of the central axis 11 is also lower than the main direction 82 of the injection portions 34 in the branch portion 30-3a. Look to the side.
  • the liquid 80 is ejected toward the bottom 16 in the vicinity of the central axis 11, and in a portion other than the vicinity of the central axis 11, parallel to a tangent of a circle on the xy plane centering on the central axis 11 and in a predetermined circumferential direction
  • the liquid 80 can be sprayed on the surface. Therefore, the injection of the liquid 80 of the injection unit 34 can assist the swirlability of the exhaust gas.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Buses disposées à l'intérieur de colonnes de réaction nécessitant un entretien régulier. Lorsqu'une grue ou analogue est utilisée pour retirer une colonne de réaction d'un dispositif de traitement de gaz d'échappement dans le but d'effectuer un entretien sur de telles buses, une augmentation des coûts et de l'espace pour installer la grue sont nécessaires. Un dispositif de traitement de gaz d'échappement est pourvu d'un cylindre extérieur comprenant un espace interne qui s'étend dans la direction de hauteur à partir d'un côté inférieur où le gaz d'échappement est introduit vers un côté supérieur où le gaz d'échappement sort. Le dispositif de traitement de gaz d'échappement en est plus pourvu d'une section de bifurcation comprenant des tuyaux de bifurcation qui sont pourvus d'une section de pulvérisation pour pulvériser un liquide pour traiter le gaz d'échappement dans l'espace interne. Le cylindre extérieur comprend des ouvertures par lesquelles les tuyaux de bifurcation peuvent entrer et sortir.
PCT/JP2017/013750 2016-05-25 2017-03-31 Dispositif de traitement de gaz d'échappement WO2017203837A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11008911B1 (en) 2019-12-20 2021-05-18 Valmet Technologies Oy Scrubber for exhaust gas cleaning
CN113164866A (zh) * 2019-06-28 2021-07-23 富士电机株式会社 废气处理装置和净气用喷嘴
WO2022065082A1 (fr) * 2020-09-25 2022-03-31 三菱重工業株式会社 Structure de tuyauterie de pulvérisation pour appareil de désulfuration de gaz de combustion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6977830B1 (ja) * 2020-08-14 2021-12-08 富士電機株式会社 排ガス処理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979967A (fr) * 1972-12-11 1974-08-01
JPS5949823A (ja) * 1982-09-13 1984-03-22 Babcock Hitachi Kk 塔内に支柱を有する脱硫塔
WO2009011323A1 (fr) * 2007-07-13 2009-01-22 Ebara Corporation Dispositif de nettoyage d'un gaz d'échappement
JP5910789B1 (ja) * 2015-11-17 2016-04-27 富士電機株式会社 排ガス処理装置および幹管の分割体を吸収塔から取り出す方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979967A (fr) * 1972-12-11 1974-08-01
JPS5949823A (ja) * 1982-09-13 1984-03-22 Babcock Hitachi Kk 塔内に支柱を有する脱硫塔
WO2009011323A1 (fr) * 2007-07-13 2009-01-22 Ebara Corporation Dispositif de nettoyage d'un gaz d'échappement
JP5910789B1 (ja) * 2015-11-17 2016-04-27 富士電機株式会社 排ガス処理装置および幹管の分割体を吸収塔から取り出す方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113164866A (zh) * 2019-06-28 2021-07-23 富士电机株式会社 废气处理装置和净气用喷嘴
EP3875166A4 (fr) * 2019-06-28 2022-01-26 Fuji Electric Co., Ltd. Appareil de traitement des gaz d'échappement et buse d'épurateur
US11008911B1 (en) 2019-12-20 2021-05-18 Valmet Technologies Oy Scrubber for exhaust gas cleaning
EP3838380A1 (fr) * 2019-12-20 2021-06-23 Valmet Technologies Oy Épurateur de nettoyage de gaz d'échappement
WO2022065082A1 (fr) * 2020-09-25 2022-03-31 三菱重工業株式会社 Structure de tuyauterie de pulvérisation pour appareil de désulfuration de gaz de combustion

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