WO2017203836A1 - Dispositif de traitement de gaz d'échappement et procédé d'entretien pour le dispositif de traitement de gaz d'échappement - Google Patents

Dispositif de traitement de gaz d'échappement et procédé d'entretien pour le dispositif de traitement de gaz d'échappement Download PDF

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Publication number
WO2017203836A1
WO2017203836A1 PCT/JP2017/013737 JP2017013737W WO2017203836A1 WO 2017203836 A1 WO2017203836 A1 WO 2017203836A1 JP 2017013737 W JP2017013737 W JP 2017013737W WO 2017203836 A1 WO2017203836 A1 WO 2017203836A1
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WO
WIPO (PCT)
Prior art keywords
divided body
exhaust gas
flange portion
height direction
gas treatment
Prior art date
Application number
PCT/JP2017/013737
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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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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 WO2017203836A1 publication Critical patent/WO2017203836A1/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
    • B01D53/34—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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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

Definitions

  • the present invention relates to an exhaust gas treatment device and a method for maintaining an exhaust gas treatment device.
  • 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 a reaction tower.
  • the reaction tower 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 treated exhaust gas is discharged.
  • the reaction tower may have an outer cylinder. In a state where the reaction tower is installed at a position where the exhaust gas is treated, at least a part of the outer cylinder may be movable in a direction parallel to the height direction.
  • the outer cylinder may have a first divided body and a second divided body.
  • the second divided body may have an outer diameter smaller than the inner diameter of the first divided body.
  • the exhaust gas treatment device may further include a moving mechanism. The moving mechanism may move either the first divided body or the second divided body in a direction parallel to the height direction.
  • the second divided body may be provided in the height direction than the first divided body.
  • the moving mechanism may include a bar member and a driving unit.
  • the bar member may connect the first flange portion and the second flange portion.
  • the first flange portion may be positioned in an end region in a direction parallel to the height direction in the first divided body.
  • a 2nd flange part may be located in the edge part area
  • the drive unit may move either the first divided body or the second divided body in a direction parallel to the height direction.
  • the bar member may have a threaded surface.
  • the drive part may have a nut part.
  • the nut portion may be movable in a direction parallel to the height direction in the bar member.
  • the nut portion may be in contact with either the first flange portion or the second flange portion, and may support either the first divided body or the second divided body.
  • the rod member may have a spiral groove on the surface.
  • the drive part may have a ball bush part.
  • the ball bushing may be movable in a direction parallel to the height direction in the bar member.
  • the ball bush portion may be in contact with either the first flange portion or the second flange portion and support either the first divided body or the second divided body.
  • the length in the direction parallel to the height direction of the inner side surface of the second divided body is the height of the outer side surface. It may be longer than the length in the direction parallel to the direction.
  • the first flange portion of the first divided body and the second flange portion of the second divided body that are connected in the height direction in a state where the outer cylinder is closed are both in the height direction or the height direction. It may be located in the end region in the opposite direction.
  • the length in the height direction of the rod member may be longer than the length between the first flange portion and the second flange portion connected in the height direction in a state where the outer cylinder is closed.
  • One of the first flange portion of the first divided body and the second flange portion of the second divided body, which are connected in the height direction in a state where the outer cylinder is closed, is an end region in the height direction. Located in the end region in the direction opposite to the height direction.
  • the length in the height direction of the rod member may be longer than the length between the first flange portion and the second flange portion connected in the height direction in a state where the outer cylinder is closed.
  • the exhaust gas treatment device may further include a sealing member and a sealing ring.
  • the sealing member may be in contact with at least the outer diameter of the second divided body and the first flange portion of the first divided body.
  • the sealing ring may contact the outer diameter of the second divided body, the first flange portion of the first divided body, and the sealing member.
  • the exhaust gas treatment device may further include a sealing member and a sealing ring.
  • the sealing member may contact at least the outer diameter of the second divided body and the third flange portion located in the end region in the direction opposite to the first flange portion of the first divided body.
  • the sealing ring may contact the outer diameter of the second divided body, the third flange portion of the first divided body, and the sealing member.
  • At least a part of the outer cylinder may have an elastic cylinder part.
  • the exhaust gas treatment device may further include a stem pipe in the internal space of the reaction tower.
  • the main pipe may be capable of transporting a liquid for treating the exhaust gas in the height direction.
  • the trunk can be divided into two or more in the height direction.
  • the exhaust gas treatment device may include a reaction tower.
  • the reaction tower 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 treated exhaust gas is discharged.
  • the method for maintaining the exhaust gas treatment apparatus may include a step of moving at least a part of the outer cylinder of the reaction tower and a step of maintaining the inside of the reaction tower. In the stage of moving at least a part of the outer cylinder of the reaction tower, in a state where the reaction tower is installed at a position for treating the exhaust gas, at least a part of the outer cylinder of the reaction tower is placed in a direction parallel to the height direction of the reaction tower. You may move in parallel.
  • the step of maintaining the interior of the reaction tower may be after the moving step.
  • FIG. 2 is a top view of the AA ′ cross section of FIG. 1. It is a figure which shows the cross section of the waste gas processing apparatus. It is an enlarged view of the area
  • FIG. 6 is a diagram showing a state where the first divided body 50 is moved in the ⁇ z direction. It is a figure which shows the state which moved the 2nd division body 60 to + z direction. It is a figure which shows the modification of 1st Embodiment.
  • FIG. 10 is a partially enlarged view showing a modification of the second divided body 60. It is an enlarged view of the area
  • FIG. It is a top view of CC 'section of Drawing 13A. It is an enlarged view of the area
  • FIG. 1 is a diagram showing an exhaust gas treatment apparatus 100 installed on a ship.
  • 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.
  • the exhaust gas treatment apparatus 100 of this example is provided in the vicinity of the joint between the side surface 90 and the bottom surface 92 of the ship.
  • the exhaust gas treatment apparatus 100 of this example includes a reducer unit 22, a reaction tower 10, and a moving mechanism 70.
  • the exhaust gas treatment device 100 is connected to the flue section 20 at the upper part thereof and connected to the drainage part 84 at the lower part thereof.
  • FIG. 1 the part which is not a component of the waste gas processing apparatus 100 is shown with the oblique line. However, in other figures, it should be noted that even the constituent elements of the exhaust gas treatment apparatus 100 are indicated by hatching.
  • the height direction from the bottom 14 side to the top 12 side of the reaction tower 10 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 reaction tower 10 of this example has an upper outer cylinder 30, a middle outer cylinder 40 and a lower outer cylinder 80.
  • the lower outer cylinder 80 is located closer to the bottom 14 side of the reaction tower 10 than the middle outer cylinder 40.
  • the lower outer cylinder 80 has the exhaust gas inlet 16 on the side surface and the drainage outlet 17 on the bottom part 14.
  • the exhaust gas inlet 16 is an area where the exhaust gas inlet pipe is connected to the lower outer cylinder 80.
  • the exhaust gas introduction pipe is a flow path for introducing exhaust gas discharged from a ship engine or the like into the reaction tower 10.
  • the exhaust gas inlet 16 provided at a position in the back of the drawing is indicated by a broken line.
  • the exhaust gas is introduced into the reaction tower 10 from the exhaust gas inlet 16.
  • the exhaust gas may swirl up in the + z direction inside the reaction tower 10. The exhaust gas is washed more efficiently because the probability of gas-liquid contact is higher when swirling the internal space than when rising linearly in the + z direction in the internal space of
  • a U-shaped bolt 82-2 is provided on the outer shape of the lower outer cylinder 80.
  • the curved portion of the U-shaped bolt 82-2 may contact the lower outer cylinder 80.
  • the longitudinal part of the U-shaped bolt 82-2 is fixed to a base part 94-2 fixed to the side surface 90. Thereby, the lower outer cylinder 80 is fixed to the side surface 90.
  • the vicinity of the bottom 14 of the reaction tower 10 may function as a drainage storage part for temporarily storing the liquid that has fallen after being jetted inside the reaction tower 10.
  • the drainage outlet 17 may protrude further in the ⁇ z direction than the bottom 14 of the lower outer cylinder 80.
  • the liquid stored near the bottom 14 may be finally discharged from the drainage outlet 17 to the drainage 84.
  • the middle outer cylinder 40 has a first divided body 50 and a second divided body 60.
  • the first divided body 50 in this example is located above the second divided body 60.
  • the second divided body 60 of this example has an outer diameter smaller than the inner diameter of the first divided body 50.
  • the first divided body 50 of this example includes a fixed flange portion 52 located in the end region in the + z direction and a moving flange portion 54 located in the end region in the ⁇ z direction.
  • the moving flange portion 54 is an example of a first flange portion.
  • the second divided body 60 of the present example includes a moving flange portion 64 positioned in the end region in the ⁇ z direction.
  • the moving flange portion 64 is an example of a second flange portion.
  • the moving mechanism 70 has a function of moving either the first divided body 50 or the second divided body 60 in the z direction.
  • the moving mechanism 70 when the z-direction position of the second divided body 60 is fixed, the first divided body 50 can be slid in the ⁇ z direction. Furthermore, when the z-direction position of the first divided body 50 is fixed, the second divided body 60 can be slid in the + z direction.
  • the moving mechanism 70 fixes the position in the z direction between the moving flange portion 54 of the first divided body 50 and the moving flange portion 64 of the second divided body 60.
  • first divided body 50 and the second divided body 60 are opened and closed by sliding in the z direction, compared with a case where a part of the side surface of the middle outer cylinder 40 is rotated outward to open and close.
  • the space required for opening and closing can be reduced.
  • airtightness can be further increased because sealing and sealing are easier than in the case where a part of the side surface of the middle outer tube 40 is rotated outward to open and close.
  • the exhaust gas treatment apparatus 100 of this example has a sealing ring 58.
  • the sealing ring 58 contacts the outer diameter of the second divided body 60, the moving flange portion 54, and a sealing member 56 described later.
  • the sealing ring 58 of this example is a metal ring.
  • the sealing ring 58 of this example presses a sealing member 56 described later. Thereby, the gap between the first divided body 50 and the second divided body 60 may be sealed.
  • the sealing ring 58 is fixed to the moving flange portion 54 by the fixing tool 51.
  • the upper outer cylinder 30 is provided on the middle outer cylinder 40.
  • a U-shaped bolt 82-1 is provided on the outer shape of the upper outer cylinder 30.
  • the longitudinal part of the U-shaped bolt 82-1 is fixed to the base part 94-1.
  • the lower outer cylinder 80 is fixed to the side surface 90.
  • the reaction tower 10 is fixed to the side surface 90 of the ship by U-shaped bolts 82 provided on the upper outer cylinder 30 and the lower outer cylinder 80.
  • the reducer unit 22 is provided on the upper outer cylinder 30.
  • the large diameter portion at the end in the ⁇ z direction of the reducer portion 22 is connected to the upper outer cylinder 30.
  • the small diameter portion at the end in the + z direction of the reducer portion 22 of this example is connected to the flue portion 20.
  • the central axis in the xy plane of the reducer portion 22 of this example coincides with the central axis of the middle outer cylinder 40.
  • the reducer portion 22 has a truncated cone-shaped internal space that gradually decreases as the radius in the xy plane advances in the + z direction. Thereby, compared with the case where the flue part 20 and the upper outer cylinder 30 connect directly, it has the function to reduce the pressure loss in the exhaust gas processing apparatus 100.
  • the reducer unit 22 is connected to the flue unit 20.
  • the flue section 20 may extend outside the ship.
  • the exhaust gas cleaned by the exhaust gas processing apparatus 100 may be discharged outside the ship through the flue portion 20.
  • 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]. Further, the reducer portion 22 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 exhaust gas treatment apparatus 100 of this example has three moving mechanisms 70.
  • the moving mechanism 70 of the present example is provided at a position where a radial axis extending in the + y direction from the central axis 11 of the middle outer tube 40 is rotated ⁇ 60 degrees clockwise and 180 degrees.
  • the exhaust gas treatment apparatus 100 may include four or more moving mechanisms 70.
  • the moving mechanism 70 has a bar member 72 and a nut portion 77.
  • the nut portion 77 of this example has an outer shape of a hexagonal column.
  • the exhaust gas treatment apparatus 100 of this example has three fixtures 51.
  • the fixture 51 of this example is provided at a position of a radial axis extending in the + y direction from the central axis 11 and a position obtained by rotating the radial axis by ⁇ 120 degrees clockwise.
  • Attachment and removal and operation of the moving mechanism 70 become easier.
  • the exhaust gas treatment apparatus 100 may have four or more fixtures 51.
  • FIG. 3 is a view showing a cross section of the exhaust gas treatment apparatus 100.
  • the trunk tube 24, the branch tube 25, the injection unit 26, the liquid introduction unit 28, and the baffle 29 show side surfaces instead of cross sections.
  • the reaction tower 10 has an internal space 15 extending in the + z direction from the bottom 14 side.
  • the exhaust gas treatment apparatus 100 has a liquid introduction part 28 and a baffle 29 inside the lower outer cylinder 80.
  • the liquid introducing portion 28 of this example is introduced into the inside from the side surface of the lower outer cylinder 80 in the vicinity of the bottom 14 of the lower outer cylinder 80.
  • the liquid introducing portion 28 in this example is a tube bent into an L shape in the xz plane. 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 in this example is a liquid for treating exhaust gas.
  • the liquid introduction unit 28 and the trunk tube 24 are fluidly connected, and the liquid introduced into the liquid introduction unit 28 is supplied to the trunk tube 24.
  • the baffle 29 in this example is installed in contact with the liquid introduction unit 28.
  • the baffle 29 may have a plane parallel to the xy plane.
  • the baffle 29 of this example is a disk having a through opening through which the liquid introduction part 28 can pass.
  • the baffle 29 is provided closer to the bottom 14 than the exhaust gas inlet 16.
  • the baffle 29 may have a function of dividing the lower outer cylinder 80 into a region where exhaust gas is introduced and a region where drainage is stored.
  • the exhaust gas treatment apparatus 100 includes a main pipe 24, a plurality of branch pipes 25, and a plurality of injection units 26 in the internal space 15 of the reaction tower 10.
  • the trunk tube 24 of this example extends in the height direction in the internal space 15 of the reaction tower 10.
  • the trunk tube 24 of this example is provided at the same height as the middle outer tube 40.
  • the trunk tube 24 can transport the liquid supplied from the liquid introduction part 28 in the height direction.
  • a plurality of branch pipes 25 are connected to the trunk pipe 24.
  • the stem tube 24 and the plurality of branch tubes 25 are fluidly connected so that liquid is supplied from the stem tube 24 to the plurality of branch tubes 25.
  • the trunk tube 24 in this example is a single tube that cannot be divided in the height direction range.
  • the trunk tube 24 may be divisible into two or more in the height direction.
  • the trunk tube 24 may be split into two at a position half the length in the height direction of the trunk tube 24.
  • the plurality of branch pipes 25 are provided so as to overlap in the height direction.
  • the plurality of branch pipes 25-1A to 25-nA are provided at different height positions spaced apart from each other at regular intervals in the height direction.
  • n is a natural number of 2 or more.
  • n 7.
  • the pitch in the height direction of the branch pipe 25 may be 0.3 [m].
  • the branch pipes 25-1B to 25-nB are also provided at different height positions with a predetermined pitch. The same applies to the branch pipe 25-1C to the branch pipe 25-nC and the branch pipe 25-1D to the branch pipe 25-nD.
  • the injection unit 26 injects the liquid supplied from the trunk tube 24 in the internal space 15 of the reaction tower 10.
  • 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 26 may be a spray nozzle that ejects liquid in an empty cone shape.
  • the injection port of the injection part 26 is provided in the part which attached
  • the first divided body 50 of this example is assembled by fitting the end portion of the cylindrical side surface to the moving flange portion 54. Specifically, the convex portion located at the lower portion of the cylindrical side surface is fitted into the concave portion on the upper surface of the moving flange portion 54, and the side surface and the center of the circle in the moving flange portion 54 are accurately aligned and assembled. .
  • the assembling method is generally called an inlay method (that is, an assembling method by engaging convex portions and concave portions).
  • the second divided body 60 of this example is also assembled by the inlay method.
  • the exhaust gas treatment apparatus 100 of this example further includes a sealing member 56.
  • the sealing member 56 of this example is in contact with the outer diameter of the second divided body 60, the surface on the bottom 14 side of the moving flange portion 54, and the inclined surface 57 inside the sealing ring 58.
  • the slope 57 is shown with a code
  • the sealing member 56 in this example is an O-ring.
  • the inclined surface 57 inside the sealing ring 58 presses the sealing member 56 so that the gap between the first divided body 50 and the second divided body 60 can be sealed.
  • the moving mechanism 70 includes a bar member 72 and a drive unit 76.
  • One moving mechanism 70 includes one bar member 72 and two drive units 76 provided at different positions of the bar member 72.
  • the bar member 72 connects the moving flange portion 54 and the moving flange portion 64.
  • the drive unit 76 moves either the first divided body 50 or the second divided body 60 in the z direction.
  • the drive unit 76-1 moves the first divided body 50 in the z direction.
  • the driving unit 76-2 moves the second divided body 60 in the z direction.
  • the upper outer cylinder 30 has a liquid return ring 35 inside.
  • the liquid return ring 35 is provided in a ring shape in contact with the inner wall of the upper outer cylinder 30.
  • the liquid return ring 35 may have a function of preventing the atomized liquid from being discharged out of the exhaust gas treatment apparatus 100.
  • the liquid return ring 35 may have an opening through which liquid staying on the ring can fall downward due to its own weight.
  • FIG. 4 is an enlarged view of the region B in the first embodiment.
  • FIG. 4 shows a state in which the middle outer cylinder 40 is closed.
  • Both the moving flange portion 54 and the moving flange portion 64 that are coupled in the z direction when the middle outer tube 40 is closed may be located in the end region in the ⁇ z direction.
  • the moving flange portion 54 is provided at the lowermost position of the first divided body 50
  • the moving flange portion 64 is provided at the lowermost position of the second divided body 60.
  • the outer diameter of the moving flange portion 54 is longer than the outer diameter of the fixed flange portion 52.
  • the second divided body 60 does not have a fixed flange portion but has only a moving flange portion 64.
  • the moving flange portion 64 has an outer diameter that is approximately the same length as the outer diameter of the moving flange portion 54.
  • the term “fixed flange portion” does not mean a flange portion whose position is always fixed.
  • the fixed flange portion 52 may move when the first divided body 50 moves.
  • the fixed flange portion only means that the flange portion is different from the moving flange portion where the drive portion 76 is located.
  • the length of the rod member 72 in the z direction is longer than the length between the moving flange portion 54 and the moving flange portion 64 connected in the z direction when the middle outer tube 40 is closed.
  • the rod member 72 of this example protrudes above the moving flange portion 54 and protrudes below the moving flange portion 64.
  • the bar member 72 may be longer than the length of the second divided body 60 in the z direction.
  • the rod member 72 of this example may protrude above the moving flange portion 54 by the length of the two nut portions 77 in the z direction, and the moving flange portion 64 by the length of the two nut portions 77 in the z direction. May protrude below.
  • the rod member 72 of this example has a threaded surface 73.
  • the drive unit 76 of this example includes a plurality of nut portions 77.
  • the drive unit 76-1 in this example includes a fixing nut portion 77-1 and a moving nut portion 77-2.
  • a moving mechanism 70 is constituted by a bar member 72 having a threaded surface 73 and a plurality of nut portions 77. Therefore, the configuration of the moving mechanism 70 can be simplified.
  • the fixing nut portion 77-1 and the moving nut portion 77-2 sandwich the moving flange portion 54 therebetween.
  • the fixing nut portion 77-1 may contact the upper surface of the moving flange portion 54.
  • the moving nut portion 77-2 can contact the moving flange portion 54 and support the first divided body 50 from below.
  • the moving nut portion 77-2 is movable in the z direction on the bar member 72.
  • the first divided body 50 can be moved in the -z direction by removing the fixing tool 31 and rotating the moving nut portion 77-2 in the -z direction.
  • the fixing nut portion 77-1 may be removed when the first divided body 50 is moved in the -z direction.
  • the fixture 51, the sealing member 56, and the sealing ring 58 may be removed from the middle outer cylinder 40, or from the middle outer cylinder 40. You may leave it without removing it.
  • the drive unit 76-2 of this example includes a fixing nut portion 77-3 and a moving nut portion 77-4.
  • the fixing nut portion 77-3 and the moving nut portion 77-4 sandwich the moving flange portion 64 therebetween.
  • the fixing nut portion 77-3 may contact the upper surface of the moving flange portion 64.
  • the moving nut portion 77-4 can contact the moving flange portion 64 and support the second divided body 60 from below.
  • the moving nut portion 77-4 is movable in the z direction on the bar member 72.
  • the second split body 60 can be moved in the + z direction by removing the fixture 61 and rotating the moving nut portion 77-4 in the + z direction.
  • the fixing nut portion 77-1 is removed.
  • the fixture 51, the sealing member 56, and the sealing ring 58 may be removed from the middle outer cylinder 40 or removed from the middle outer cylinder 40. It may be left as it is.
  • the state where the reaction tower 10 is installed at the position where the exhaust gas is treated refers to a state where the exhaust gas treatment device 100 is connected to the flue section 20 at the upper side and connected to the drainage section 84 at the lower side.
  • the injection unit 26 when the injection unit 26 is maintained, it is not necessary to remove the reaction tower 10 using a crane or the like, so that the space and cost for installing the crane can be reduced.
  • maintenance work time can be shortened accordingly.
  • FIG. 5A is a diagram showing a state in which the first divided body 50 is moved in the ⁇ z direction.
  • the internal space 15-1 substantially corresponding to the height range corresponding to the first divided body 50 is exposed.
  • the operator can maintain the injection part 26 located in the internal space 15-1.
  • the injection unit 26 from the branch pipe 25-1 to the branch pipe 25-4 (that is, from the first stage to the fourth stage) can be maintained.
  • maintenance refers to operations such as replacing the injection unit 26 and cleaning the injection unit 26 in order to maintain the injection performance of the injection unit 26.
  • FIG. 5B is a diagram illustrating a state in which the second divided body 60 is moved in the + z direction.
  • the fixing nut portion 77-3 and the moving nut portion 77-4 are moved to the maximum in the + z direction so as to substantially correspond to the height range corresponding to the second divided body 60.
  • the space 15-2 is exposed. Thereby, the operator can maintain the injection part 26 located in the internal space 15-2.
  • the injection unit 26 from the branch pipe 25-5 to the branch pipe 25-7 that is, from the fifth stage to the seventh stage
  • FIG. 6 is a diagram showing a modification of the first embodiment.
  • the drive unit 76 has a ball bushing 78.
  • the rod member 72 has a spiral groove on the surface 74 for receiving the ball of the ball bush portion 78. This is different from the examples of FIGS. 1 to 5A and 5B.
  • the ball bush may be called a linear bush.
  • the ball bushing portion 78-1 in this example can support the first divided body 50 by contacting the moving flange portion 54.
  • the ball bush part 78-2 of this example may contact the upper surface of the moving flange part 64, and the distance between the moving flange part 54 and the moving flange part 64 may be fixed.
  • the ball bush portion 78-2 may contact the lower surface of the moving flange portion 64, and the ball bush portion 78-2 may support the second divided body 60.
  • the ball bush portion 78-1 and the ball bush portion 78-2 in this example are movable in the z direction on the bar member 72. Specifically, the ball bush portion 78 can move in the z direction by rotating with respect to the rod member 72.
  • the ball bushing 78 may have a mechanism that rotates electrically. In this case, the three ball bush portions 78 can move simultaneously at the same pitch. Thereby, compared with the example of the nut portion 77, the first divided body 50 or the second divided body 60 can be accurately moved in the direction. Moreover, compared with the example of the nut portion 77, the first divided body 50 or the second divided body 60 can be moved in a shorter time.
  • FIG. 7 is a partially enlarged view showing a modification of the second divided body 60.
  • the trunk tube 24, the branch tube 25, and the injection unit 26 are omitted for easy understanding.
  • the length in the z direction of the side surface of the inner diameter 65 of the second divided body 60 is z in the side surface of the outer diameter 66 in the end region opposite to the end region where the moving flange portion 64 is provided. Longer than the direction length. That is, in this example, the + z-direction end portion of the second divided body 60 has a slope 67 that faces the inner surface of the first divided body 50.
  • the inner surface of the second divided body 60 (that is, the cylinder having the inner diameter 65) and the inclined surface 67 may form an angle of 30 degrees.
  • the 1st division body 50 and the 2nd division body 60 become easy to mutually slide compared with the case where the slope 67 is not provided.
  • FIG. 7 may be applied to the first embodiment and its modifications.
  • FIG. 8 is an enlarged view of the region B in the second embodiment.
  • the second divided body 60 is provided in the + z direction with respect to the first divided body 50. Accordingly, the moving flange portion 54 and the moving flange portion 64 that are coupled in the z direction when the middle outer cylinder 40 is closed are both located in the end region in the + z direction.
  • the moving flange portion 54 is provided at the uppermost position of the first divided body 50
  • the moving flange portion 64 is provided at the uppermost position of the second divided body 60. That is, this example corresponds to a configuration in which the middle outer cylinder 40 of the first embodiment is turned upside down.
  • the second divided body 60 having an outer diameter 66 smaller than the inner diameter of the first divided body 50 is provided above the first divided body 50.
  • the sealing ring 58 contacts the outer diameter 66 of the second divided body 60, the moving flange portion 54, and the sealing member 56.
  • one or more of the example of the ball bush portion 78 in FIG. 6 and the example of providing the slope 67 in FIG. 7 may be applied.
  • FIG. 9 is an enlarged view of the region B in the third embodiment.
  • the 1st division body 50 of this example is corresponded to the structure which turned the 1st division body 50 in 1st Embodiment upside down.
  • the moving flange portion 54 and the moving flange portion 64 are connected in the z direction in a state where the middle outer cylinder 40 is closed.
  • the moving flange portion 54 is located in the end region in the + z direction
  • the moving flange portion 64 is located in the end region in the ⁇ z direction.
  • the length of the rod member 72 in the z direction is longer than the length between the moving flange portion 54 and the moving flange portion 54 connected in the z direction in a state where the middle outer tube 40 is closed. .
  • the rod member 72 of this example supports the first divided body 50 and the second divided body 60 over a longer distance than the rod member 72 of the first and second embodiments. Therefore, in this example, it is advantageous that the mechanical stability of the middle outer cylinder 40 is higher than in the first and second embodiments.
  • the exhaust gas treatment apparatus 100 of this example includes an outer diameter 66 of the second divided body 60 and a fixed flange portion 52 as a third flange portion located in an end region in the direction opposite to the moving flange portion 54.
  • a sealing member 56 at least in contact therewith.
  • the sealing ring 58 contacts the outer diameter 66 of the second divided body 60, the fixed flange portion 52, and the sealing member 56.
  • the fixed flange portion 52 is located in the end region in the direction opposite to the moving flange portion 54 in the first divided body 50.
  • one or more of the example of the ball bush portion 78 in FIG. 6 and the example of providing the slope 67 in FIG. 7 may be applied.
  • FIG. 10 is an enlarged view of the region B in the fourth embodiment.
  • the moving flange portion 54 is located in the end region in the ⁇ z direction, and the moving flange portion 64 is located in the end region in the + z direction. That is, this example corresponds to a configuration in which the middle outer cylinder 40 of the third embodiment is turned upside down.
  • the mechanical stability of the middle outer cylinder 40 is high compared to the first and second embodiments.
  • the sealing ring 58 contacts the outer diameter 66 of the second divided body 60, the fixed flange portion 52, and the sealing member 56.
  • one or more of the example of the ball bush portion 78 in FIG. 6 and the example of providing the slope 67 in FIG. 7 may be applied.
  • FIG. 11 is a diagram showing a maintenance method 200 of the exhaust gas treatment apparatus 100. During maintenance, the supply of exhaust gas from the engine or the like to the reaction tower 10 is stopped. In addition, the supply of liquid from the trunk tube 24 to the ejection unit 26 is also stopped.
  • each stage can be executed in a state where the reaction tower 10 is installed at a position where the exhaust gas is processed.
  • S20 is a stage in which the fixture 31, the fixture 51, the sealing member 56, and the sealing ring 58 are removed from the reaction tower 10.
  • the fixing nut portion 77-3 may be moved in the + z direction.
  • the fixing nut portion 77-1 may be removed from the reaction tower 10 in S20.
  • S30 is a stage in which at least a part of the middle outer cylinder 40 of the reaction tower 10 is moved in parallel to the z direction.
  • the first divided body 50 is moved in the ⁇ z direction.
  • S40 is a stage in which the internal space 15 substantially corresponding to the first divided body 50 is exposed and the injection unit 26 located inside the reaction tower 10 is maintained. Since the internal space 15 is exposed, the operator can easily access the injection unit 26.
  • S50 is a stage in which the first divided body 50 is translated in the opposite direction to S30.
  • the first divided body 50 moved in the ⁇ z direction in S30 is moved in the + z direction.
  • the middle outer cylinder 40 is closed.
  • S60 is a stage in which the fixture 31 is attached. Thereby, the first divided body 50 is fixed to the upper outer cylinder 30.
  • S12 is a stage in which it is determined whether or not the injection unit 26 at the same height as the second divided body 60 is to be maintained. If YES in S12, the process proceeds to S22. If NO in S12, the process proceeds to S70.
  • the series of steps from S22 to S62 is almost the same as the series of steps from S20 to S60, so only the differences will be described.
  • the fixture 61 is removed instead of the fixture 31.
  • the nut part 77 the nut part 77-3 for fixation is moved in S22.
  • S22 is different from S20.
  • the second divided body 60 is moved instead of the first divided body 50.
  • the series of steps from S32 to S52 is different from the series of steps from S30 to S50.
  • S62 is a stage in which the fixture 61 is attached. Thereby, the second divided body 60 is fixed to the lower outer cylinder 80.
  • S70 is a stage in which the fixture 51, the sealing member 56, and the sealing ring 58 are attached to the reaction tower 10. After S70, the flow of the maintenance method 200 ends.
  • the maintenance method 200 of this example it is first determined whether or not the first divided body 50 is to be maintained, but it may be determined first whether or not the second divided body 60 is to be maintained. . That is, the series of steps S10 to S60 may be replaced with the series of steps S12 to S62.
  • FIG. 12 is a diagram showing a maintenance method 210 of the exhaust gas treatment apparatus 100.
  • the maintenance method 210 may be applied to the second and fourth embodiments described above.
  • the maintenance method 210 in FIG. 12 is almost the same as the maintenance method 200 in FIG. Differences are the following (1) to (3). A duplicate description other than these is omitted.
  • FIG. 13A is an enlarged view of a region B in the fifth embodiment.
  • the fifth to seventh embodiments are alternative examples of the above-described example in which a part of the middle outer cylinder 40 is slid open and closed by the moving mechanism 70.
  • a part of the middle outer cylinder 40 may have a stretchable cylinder part.
  • the middle outer cylinder 40 in this example has an upper divided body 150 and a lower divided body 160.
  • the upper divided body 150 of this example includes an upper flange portion 152, a lower flange portion 154, and a bellows portion 156 between the upper flange portion 152 and the lower flange portion 154.
  • the bellows part 156 is an elastic cylinder part in the z direction.
  • the lower divided body 160 of this example includes an upper flange portion 162 and a lower flange portion 164.
  • the lower flange portion 154 and the upper flange portion 162 are fixed by a fixture 151.
  • the lower part of the lower flange part 164 and the upper part of the lower outer cylinder 80 are fixed by a fixture 161.
  • FIG. 13B is a diagram showing a state in which the bellows portion 156 is opened.
  • the bellows part 156 is a stretchable cylinder part in which inner and outer edges of a ring-shaped thin metal plate are alternately welded and joined.
  • the operator can manually open the bellows part 156.
  • the internal space 15-1 that substantially corresponds to the height range corresponding to the first divided body 50 is exposed. Therefore, the operator can maintain the ejection unit 26 at the same height as the upper divided body 150.
  • the injection unit 26 from the branch pipe 25-1 to the branch pipe 25-4 that is, from the first stage to the fourth stage
  • the use of the bellows part 156 is advantageous in that the upper divided body 150 can be opened and closed more easily than in the first to fourth embodiments.
  • FIG. 14 is a top view of the CC ′ cross section of FIG. 13A.
  • the structure of the internal space 15 is omitted.
  • the fixture 151 on the lower flange part 154 is shown.
  • the exhaust gas treatment apparatus 100 of this example has six fixtures 151.
  • the fixing device 151 of the present example rotates a radial axis extending in the + y direction from the central axis 11 of the middle outer cylinder 40 by ⁇ 60 degrees clockwise, a position rotated ⁇ 120 degrees, and 0 degrees and 180 degrees. Provided in position.
  • FIG. 15 is an enlarged view of the region B in the sixth embodiment.
  • the lower divided body 160 has a bellows portion 166 between the upper flange portion 162 and the lower flange portion 164.
  • the operator can manually open the bellows portion 166.
  • the injection unit 26 at the same height as the lower divided body 160 can be maintained.
  • it is advantageous that the lower divided body 160 can be opened and closed more easily than in the first to fourth embodiments.
  • FIG. 16 is an enlarged view of the region B in the seventh embodiment.
  • the entire middle outer cylinder 40 excluding the upper flange portion 172 and the lower flange portion 174 is a bellows portion 176.
  • the operator can open the bellows part 176 manually by removing the fixture 31. Thereby, the injection unit 26 at the same height as the middle outer cylinder 40 can be maintained.

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'une colonne de réaction comprenant un espace interne qui s'étend dans la direction de hauteur depuis un côté inférieur où le gaz d'échappement est introduit vers un côté supérieur où le gaz d'échappement traité est sorti. La colonne de réaction comprend un cylindre extérieur et il est possible de déplacer au moins une partie du cylindre extérieur dans une direction parallèle à la direction de hauteur lorsque la colonne de réaction est installée dans une position pour traiter le gaz d'échappement.
PCT/JP2017/013737 2016-05-25 2017-03-31 Dispositif de traitement de gaz d'échappement et procédé d'entretien pour le dispositif de traitement de gaz d'échappement WO2017203836A1 (fr)

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JP2016-104641 2016-05-25
JP2016104641A JP2017209629A (ja) 2016-05-25 2016-05-25 排ガス処理装置および排ガス処理装置をメンテナンスする方法

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49112230A (fr) * 1973-02-28 1974-10-25
JPS55111531U (fr) * 1979-01-31 1980-08-05
JPS6319490A (ja) * 1986-07-07 1988-01-27 新日本製鐵株式会社 ガスダクトの脱着装置
JPH01179727U (fr) * 1988-06-03 1989-12-25
JPH10314544A (ja) * 1997-05-14 1998-12-02 Toyo Eng Works Ltd 光触媒流動循環式脱臭装置
WO2015106355A1 (fr) * 2014-01-17 2015-07-23 Marine Exhaust Solutions Inc. Système de nettoyage de gaz d'échappement marins
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49112230A (fr) * 1973-02-28 1974-10-25
JPS55111531U (fr) * 1979-01-31 1980-08-05
JPS6319490A (ja) * 1986-07-07 1988-01-27 新日本製鐵株式会社 ガスダクトの脱着装置
JPH01179727U (fr) * 1988-06-03 1989-12-25
JPH10314544A (ja) * 1997-05-14 1998-12-02 Toyo Eng Works Ltd 光触媒流動循環式脱臭装置
WO2015106355A1 (fr) * 2014-01-17 2015-07-23 Marine Exhaust Solutions Inc. Système de nettoyage de gaz d'échappement marins
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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