WO2021176880A1 - 排ガス処理装置および液体排出ユニット - Google Patents
排ガス処理装置および液体排出ユニット Download PDFInfo
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- WO2021176880A1 WO2021176880A1 PCT/JP2021/002334 JP2021002334W WO2021176880A1 WO 2021176880 A1 WO2021176880 A1 WO 2021176880A1 JP 2021002334 W JP2021002334 W JP 2021002334W WO 2021176880 A1 WO2021176880 A1 WO 2021176880A1
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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
- B01D53/74—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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/063—Spray cleaning with two or more jets impinging against each other
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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
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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
- B01D53/24—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 centrifugal force
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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
- B01D53/46—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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
- B01D2252/1035—Sea water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
Definitions
- the present invention relates to an exhaust gas treatment device and a liquid discharge unit.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11-151426
- an exhaust gas treatment device has an exhaust gas introduction port into which the exhaust gas is introduced, an exhaust gas discharge port from which the exhaust gas is discharged, and a liquid spraying portion provided between the exhaust gas introduction port and the exhaust gas discharge port, and collects the exhaust gas.
- a reaction tower to which the liquid to be processed is supplied, a discharge section arranged above the liquid spray section and discharging the liquid, and a discharge pipe connected to the discharge section and discharging the liquid discharged by the discharge section. Be prepared. In the liquid spray section, the liquid is sprayed into the inside of the reaction column.
- the discharge portion has an inner cylinder portion through which exhaust gas passes, an outer cylinder portion provided so as to surround the inner cylinder portion, and a bottom portion connecting the inner cylinder portion and the outer cylinder portion, and the inner cylinder portion and the outer side.
- the liquid is discharged into the discharge space between the cylinder and above the bottom.
- the discharge pipe has a liquid passage portion through which the liquid passes, which is connected to the discharge space through the outer cylinder portion. At least a portion of the liquid passage that penetrates the outer cylinder is located below the top surface of the main portion of the bottom.
- the discharge pipe may penetrate the outer cylinder and be in contact with the inner cylinder.
- the outer cylinder may be provided with an opening into which the discharge pipe is inserted.
- the bottom may be provided with a first notch corresponding to the opening.
- the discharge pipe may be connected to the first notch.
- the discharge pipe may have an insertion portion to be inserted into the discharge space.
- the discharge pipe may be provided with a second notch in the pipe wall above the insertion portion.
- the second notch of the discharge pipe may be connected to the first notch at the bottom.
- the area of the second notch may be equal to or larger than the cross-sectional area of the liquid passage portion of the discharge pipe.
- the curvature of the tip of the insertion portion may be equal to the curvature of the inner cylinder portion.
- the upper end of the pipe wall below the second notch of the discharge pipe is located at the same height as the upper surface of the bottom or from the upper surface of the bottom. May also be placed below.
- the bottom may have an end in contact with the first notch.
- the thickness of the end portion in the direction from the upper surface to the lower surface of the bottom portion may be larger than the thickness between the upper surface and the lower surface of the bottom portion other than the end portion.
- the curvature of a part of the pipe wall of the discharge pipe in contact with the bottom may be larger than the curvature of the other part except a part of the side wall.
- the reaction tower, discharge section and discharge pipe may be provided on the ship.
- the discharge pipe may be provided in the traveling direction of the ship.
- the inner cylinder portion may have a window portion that penetrates the side wall of the inner cylinder portion and connects the inside of the inner cylinder portion and the discharge space.
- the discharge pipe may be provided below the window portion.
- the inner cylinder portion may further have an eaves portion extending from the side wall of the inner cylinder portion above the window portion to the inside of the inner cylinder portion.
- the discharge section may be provided in the reaction tower.
- the discharge unit may be provided between the liquid spray unit and the exhaust gas discharge port.
- the exhaust gas treatment device may further include an exhaust gas outlet connected to the exhaust gas discharge port.
- the exhaust gas lead-out unit may have an exhaust gas passing unit through which the exhaust gas passes.
- the exhaust gas lead-out unit may have one end connected to the exhaust gas discharge port and the other end opposite to the one end.
- the area of the exhaust gas passing portion in the cross section orthogonal to the direction from one end to the other end may be smaller than the area inside the reaction tower in the cross section orthogonal to the direction from the exhaust gas introduction port to the exhaust gas discharge port.
- the exhaust unit may be provided in the exhaust gas lead-out unit.
- a liquid discharge unit is provided.
- the liquid discharge unit is connected to an exhaust gas treatment device that treats the exhaust gas.
- the liquid discharge unit has an inner cylinder portion connected to the exhaust gas treatment device, an outer cylinder portion provided so as to surround the inner cylinder portion, and a bottom portion connecting the inner cylinder portion and the outer cylinder portion, and has an inner side.
- a discharge part that discharges the liquid inside the inner cylinder and a liquid passage that penetrates the outer cylinder and allows the liquid to pass through are provided in the discharge space between the cylinder and the outer cylinder and above the bottom.
- a discharge part that discharges the liquid inside the inner cylinder and a liquid passage that penetrates the outer cylinder and allows the liquid to pass through are provided in the discharge space between the cylinder and the outer cylinder and above the bottom.
- a discharge part that discharges the liquid inside the inner cylinder and a liquid passage that penetrates the outer cylinder and allows the liquid to pass through are provided in the discharge space between the cylinder and the outer cylinder and above the bottom.
- FIG. 3 is an enlarged perspective view of a connection portion between the discharge portion 61 and the discharge pipe 51 in FIG.
- An example is shown in which the connection portion between the discharge unit 61 and the discharge pipe 51 in the state where the discharge unit 61 and the discharge pipe 51 shown in FIG. 4 are connected is viewed from the traveling direction E2 (Z-axis direction) of the exhaust gas 30. It is a figure.
- FIG. 5 is a diagram showing an example of a connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 as viewed in the X-axis direction.
- 5 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- 5 is a diagram showing an example of a connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 as viewed in the X-axis direction.
- 5 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- 5 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction. It is an enlarged perspective view of the discharge pipe 51 shown in FIG. It is a perspective view which shows another example of the discharge pipe 51.
- 5 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction. It is a figure which shows an example when the exhaust gas lead-out part 91 shown in FIG.
- FIG. 1 is a diagram showing an example of an exhaust gas treatment device 100 according to an embodiment of the present invention.
- the exhaust gas treatment device 100 includes a reaction tower 10, a discharge unit 61, and a discharge pipe 51.
- the exhaust gas treatment device 100 may include an exhaust gas introduction pipe 32, a power device 50, and a drainage pipe 20.
- the power unit 50 is, for example, an engine, a boiler, or the like.
- the power unit 50 discharges the exhaust gas 30.
- the exhaust gas introduction pipe 32 connects the power unit 50 and the reaction tower 10. Exhaust gas 30 is introduced into the reaction column 10. In this example, the exhaust gas 30 discharged from the power unit 50 is introduced into the reaction tower 10 after passing through the exhaust gas introduction pipe 32.
- the reaction tower 10 has an exhaust gas introduction port 11 into which the exhaust gas 30 is introduced and an exhaust gas discharge port 17 into which the exhaust gas 30 is discharged.
- a liquid 40 for treating the exhaust gas 30 is supplied to the reaction column 10.
- the liquid 40 supplied to the reaction tower 10 treats the exhaust gas 30 inside the reaction tower 10.
- the liquid 40 is, for example, seawater or an alkaline liquid. Treating the exhaust gas 30 means removing harmful substances contained in the exhaust gas 30.
- the liquid 40 becomes the drainage 46 after treating the exhaust gas 30.
- the discharge unit 61 discharges the liquid 40 contained in the exhaust gas 30.
- the discharge pipe 51 is connected to the discharge unit 61.
- the discharge pipe 51 discharges the liquid 40 discharged by the discharge unit 61.
- the discharge pipe 51 may discharge the liquid 40 to the outside of the reaction tower 10. In FIG. 1, the range of the discharge unit 61 is indicated by double-headed arrows.
- the reaction tower 10 of this example has a side wall 15, a bottom surface 16, a gas treatment unit 18, and a liquid discharge port 19.
- the reaction column 10 of this example is columnar.
- the exhaust gas discharge port 17 is arranged at a position facing the bottom surface 16 in a direction parallel to the central axis of the columnar reaction tower 10.
- the side wall 15 and the bottom surface 16 are the inner side surface and the bottom surface of the columnar reaction tower 10, respectively.
- the exhaust gas introduction port 11 may be provided on the side wall 15.
- the exhaust gas 30 is introduced into the gas treatment unit 18 after passing through the exhaust gas introduction port 11 from the exhaust gas introduction pipe 32.
- the side wall 15 and the bottom surface 16 are made of a material that is durable against the exhaust gas 30, the liquid 40, and the drainage 46.
- the material is a combination of an iron material such as SS400 or S-TEN (registered trademark) and at least one of a coating agent and a coating agent, a copper alloy such as never brass, an aluminum alloy such as aluminum brass, and a nickel alloy such as cupronickel. , Hastelloy®, SUS316L, SUS329J4L or SUS312 and the like.
- Cartesian coordinate axes of the X-axis, the Y-axis, and the Z-axis In the present specification, technical matters may be described using Cartesian coordinate axes of the X-axis, the Y-axis, and the Z-axis.
- the plane parallel to the bottom surface 16 of the reaction tower 10 is defined as the XY plane, and the direction from the bottom surface 16 toward the exhaust gas discharge port 17 (direction perpendicular to the bottom surface 16) is defined as the Z axis.
- a predetermined direction in the XY plane is defined as the X-axis direction
- a direction orthogonal to the X-axis in the XY plane is defined as the Y-axis direction.
- the Z-axis direction may be parallel to the vertical direction.
- the XY plane may be a horizontal plane.
- the exhaust gas treatment device 100 is, for example, a cyclone type scrubber for ships.
- the exhaust gas 30 introduced into the reaction tower 10 travels in the direction from the exhaust gas introduction port 11 to the exhaust gas discharge port 17 (in this example, the Z-axis direction) while rotating inside the reaction tower 10. ..
- the exhaust gas 30 swirls in the XY plane when viewed from the exhaust gas discharge port 17 toward the bottom surface 16.
- the traveling direction of the exhaust gas 30 from the exhaust gas introduction port 11 to the exhaust gas discharge port 17 inside the reaction tower 10 is defined as the traveling direction E1.
- the fact that the exhaust gas 30 travels in the traveling direction E1 means that the exhaust gas 30 travels in the direction from the exhaust gas introduction port 11 to the exhaust gas discharge port 17.
- the traveling direction E1 of the exhaust gas 30 is parallel to the Z axis.
- the traveling direction E1 of the exhaust gas 30 is indicated by a alternate long and short dash line.
- the exhaust gas treatment device 100 may further include an exhaust gas lead-out unit 91.
- the exhaust gas lead-out portion 91 of this example has a side wall 71, one end 73, the other end 75, and an exhaust gas passage portion 76.
- the exhaust gas passage unit 76 is a space through which the exhaust gas 30 passes inside the exhaust gas lead-out unit 91.
- the traveling direction of the exhaust gas 30 passing through the exhaust gas passing portion 76 is defined as the traveling direction E2.
- One end 73 is one end of the exhaust gas lead-out portion 91 in the traveling direction E2 of the exhaust gas 30.
- the other end 75 is an end portion (the other end portion) on the opposite side of the one end 73 in the traveling direction E2 of the exhaust gas 30.
- the side wall 71 is an inner surface of the exhaust gas passing portion 76 provided so as to surround the exhaust gas passing portion 76 in the XY plane.
- the exhaust gas lead-out unit 91 may have a fastening portion 74 at one end 73.
- the reaction tower 10 may have a fastening portion 92 at the exhaust gas discharge port 17.
- One end 73 of the exhaust gas lead-out portion 91 and the exhaust gas discharge port 17 may be fastened by the fastening portion 74 and the fastening portion 92.
- the fastening portion 74 and the fastening portion 92 are, for example, flanges.
- the traveling direction E1 of the exhaust gas 30 inside the reaction tower 10 may be parallel to the vertical direction or parallel to the horizontal direction. That is, the reaction tower 10 may be provided so that the central axis of the reaction tower 10 is parallel to the vertical direction, or may be provided so as to be parallel to the horizontal direction.
- the traveling direction E2 of the exhaust gas 30 inside the exhaust gas lead-out unit 91 does not have to be parallel in the horizontal direction, but may be parallel in the vertical direction. That is, the exhaust gas lead-out unit 91 may be provided so that the central axis of the exhaust gas lead-out unit 91 is not parallel to the horizontal direction, or may be provided so as to be parallel to the vertical direction.
- the traveling direction E1 and the traveling direction E2 of the exhaust gas 30 may or may not be parallel. In this example, the traveling direction E1 and the traveling direction E2 of the exhaust gas 30 are parallel.
- the reaction tower 10 has a liquid spray unit 90.
- the liquid spray unit 90 is provided between the exhaust gas introduction port 11 and the exhaust gas discharge port 17.
- the liquid spraying unit 90 may be a part of the region between the exhaust gas introduction port 11 and the exhaust gas discharge port 17 in the traveling direction E1 of the exhaust gas 30.
- the liquid spraying unit 90 may be the entire region of the reaction tower 10 when the reaction tower 10 is viewed from the exhaust gas discharge port 17 toward the bottom surface 16 (XY plane). In the liquid spraying section 90, the liquid 40 is sprayed into the reaction column 10.
- the reaction tower 10 may have one or more trunk tubes 12 to which the liquid 40 is supplied, and one or more branch tubes 13.
- the reaction tower 10 may have one or more ejection portions 14 that eject the liquid 40.
- the ejection portion 14 is connected to the branch pipe 13, and the branch pipe 13 is connected to the trunk pipe 12.
- the liquid spraying portion 90 At least a part of the trunk pipe 12, the branch pipe 13 and the ejection portion 14 are provided in the liquid spraying portion 90.
- the range of the liquid spray portion 90 inside the reaction tower 10 is indicated by double-headed arrows.
- the liquid spraying portion 90 may be in the range from the ejection portion 14 arranged on the most exhaust gas introduction port 11 side to the ejection portion 14 arranged on the most exhaust gas discharge port 17 side in the direction parallel to the Z axis.
- the liquid spraying portion 90 may be a region surrounded by the side wall 15 in the XY plane.
- the discharge unit 61 is arranged above the liquid spray unit 90.
- the discharge unit 61 discharges at least a part of the liquid 40 ejected by the ejection unit 14 in the liquid spray unit 90.
- the exhaust gas treatment device 100 may further include a swivel portion 80.
- the swivel portion 80 may be provided between the liquid spraying portion 90 and the discharging portion 61 in the traveling direction E1 and the traveling direction E2 of the exhaust gas 30.
- the swivel portion 80 is provided inside the exhaust gas lead-out portion 91 (exhaust gas passing portion 76).
- the swirling portion 80 of this example increases the speed of the exhaust gas 30 swirling around the exhaust gas passing portion 76.
- the liquid 40 contained in the exhaust gas 30 is likely to accumulate on the side wall 71 of the exhaust gas passing portion 76 by increasing the speed of the exhaust gas 30.
- the swivel portion 80 is, for example, a swirl.
- FIG. 2 is an enlarged view showing an example of the liquid spray unit 90 in FIG.
- the reaction tower 10 of this example has three trunk tubes 12 (trunk tube 12-1, trunk tube 12-2 and trunk tube 12-3).
- the trunk pipes 12-1 and 12-3 are the trunk pipes 12 provided on the most exhaust gas introduction port 11 side and the most exhaust gas discharge port 17 side, respectively, in the direction parallel to the Z axis.
- the trunk pipe 12-2 is a trunk pipe 12 provided between the trunk pipe 12-1 and the trunk pipe 12-3 in the Z-axis direction.
- the reaction tower 10 of this example includes branch pipes 13-1 to 13-12.
- the branch pipe 13-1 and the branch pipe 13-12 are the branch pipes 13 provided on the most exhaust gas introduction port 11 side and the most exhaust gas discharge port 17 side, respectively, in the direction parallel to the Z axis.
- the branch pipe 13-1, the branch pipe 13-3, the branch pipe 13-5, the branch pipe 13-7, the branch pipe 13-9 and the branch pipe 13-11 are extended in the Y-axis direction
- the branch pipe 13 -2, Branch pipe 13-4, Branch pipe 13-6, Branch pipe 13-8, Branch pipe 13-10 and Branch pipe 13-12 extend in the X-axis direction.
- branch pipe 13-1 to the branch pipe 13-4 are connected to the trunk pipe 12-1, the branch pipe 13-5 to the branch pipe 13-8 are connected to the trunk pipe 12-2, and the branch pipe 13- 9 to branch pipe 13-12 are connected to trunk pipe 12-3.
- Branch pipes 13-1, branch pipes 13-3, branch pipes 13-5, branch pipes 13-7, branch pipes 13-9 and branch pipes 13-11 are located on both sides of the trunk pipe 12 in a direction parallel to the Y axis. May be placed in.
- Branch pipes 13-2, branch pipes 13-4, branch pipes 13-6, branch pipes 13-8, branch pipes 13-10 and branch pipes 13-12 are located on both sides of the trunk pipe 12 in a direction parallel to the X axis. May be placed in.
- the branch pipe 13-1A and the branch pipe 13-1B are arranged on one side and the other side of the trunk pipe 12-1 in the direction parallel to the Y axis, respectively. 13-1. In the direction parallel to the Y axis, the branch pipe 13-1A and the branch pipe 13-1B may be provided so as to sandwich the trunk pipe 12-1. In FIG. 2, the branch pipe 13-1A and the branch pipe 13-3A are not shown because they are arranged at positions overlapping with the trunk pipe 12-1.
- the branch pipe 13-2A and the branch pipe 13-2B are arranged on one side and the other side of the trunk pipe 12-1 in the direction parallel to the X axis, respectively. 13-2. In the direction parallel to the X-axis, the branch pipes 13-2A and the branch pipes 13-2B may be provided so as to sandwich the trunk pipe 12-1.
- the reaction tower 10 of this example includes ejection portions 14-1 to ejection portions 14-12.
- the ejection portion 14-1 and the ejection portion 14-12 are the ejection portions 14 provided on the most exhaust gas introduction port 11 side and the most exhaust gas discharge port 17 side, respectively, in the direction parallel to the Z axis.
- the ejection portions 14-1 to 14-12 of this example are connected to the branch pipes 13-1 to 13-12, respectively.
- a plurality of ejection portions 14 may be provided on one side of the trunk pipe 12 in a direction parallel to the Y-axis, and a plurality of ejection portions 14 may be provided on the other side. May be done.
- a plurality of ejection portions 14 may be provided on one side of the trunk pipe 12 in a direction parallel to the X-axis, and a plurality of ejection portions 14 may be provided on the other side. May be done.
- the ejection portion 14-1A, the ejection portion 14-3A, the ejection portion 14-5A, the ejection portion 14-7A, the ejection portion 14-9A, and the ejection portion 14-11A are arranged at positions overlapping with the trunk pipe 12. It is not shown because it is.
- the ejection portion 14 has an opening surface for ejecting the liquid 40.
- the opening surface is indicated by an “x” mark.
- the opening surfaces of the ejection portions 14 arranged on one side and the other side of the trunk pipe 12 form one direction and a predetermined angle ⁇ (described later) with the extending direction of the branch pipe 13. It may point in the other direction.
- the angle ⁇ may be 30 degrees or more and 90 degrees or less.
- the direction pointed to by the opening surface refers to the direction of the central axis in the direction in which the liquid 40 is ejected from the ejection portion 14.
- the exhaust gas treatment device 100 may include a pump 60 and a flow rate control unit 70.
- the flow rate control unit 70 controls the flow rate of the liquid 40 supplied to the reaction tower 10.
- the flow rate control unit 70 may have a valve 72.
- the flow rate control unit 70 controls the flow rate of the liquid 40 supplied from the pump 60 to the ejection unit 14 by the valve 72.
- the flow rate control unit 70 of this example includes three valves 72 (valve 72-1, valve 72-2, and valve 72-3).
- the flow rate control unit 70 of this example is the liquid 40 supplied to the trunk pipe 12-1, the trunk pipe 12-2, and the trunk pipe 12-3 by the valve 72-1, the valve 72-2, and the valve 72-3, respectively. Control the flow rate.
- the liquid 40 supplied to the trunk pipe 12 passes through the branch pipe 13 and then is ejected from the ejection unit 14 into the inside of the reaction tower 10 (gas treatment unit 18).
- the flow rate control unit 70 may control the flow rate of the liquid 40 so that the flow rate of the liquid 40 supplied to the trunk pipe 12-1 is larger than the flow rate of the liquid 40 supplied to the trunk pipe 12-2.
- the flow rate control unit 70 may control the flow rate of the liquid 40 so that the flow rate of the liquid 40 supplied to the trunk pipe 12-2 is larger than the flow rate of the liquid 40 supplied to the trunk pipe 12-3.
- the ratio of the flow rate of the liquid 40 supplied to the trunk pipe 12-3, the flow rate of the liquid 40 supplied to the trunk pipe 12-2, and the flow rate of the liquid 40 supplied to the trunk pipe 12-1 is, for example, 1. : 2: 9.
- the liquid 40 is, for example, seawater or an alkaline liquid.
- the liquid 40 may be an alkaline liquid to which at least one of sodium hydroxide (NaOH) and sodium hydrogen carbonate (Na 2 CO 3) is added.
- Exhaust gas 30 contains harmful substances such as sulfur oxides (SO x).
- the sulfur oxide (SO x ) is, for example, sulfurous acid gas (SO 2 ).
- the liquid 40 is an aqueous solution of sodium hydroxide (NaOH)
- the reaction between the sulfur dioxide gas (SO 2 ) contained in the exhaust gas 30 and sodium hydroxide (NaOH) is represented by the following chemical formula 1. [Chemical formula 1] SO 2 + Na + + + OH - ⁇ Na + HSO 3 -
- sulfur dioxide (SO 2) is bisulfite ions by a chemical reaction - a (HSO 3).
- Liquid 40 is bisulfite ions by the reaction - the drainage 46 containing (HSO 3).
- the drainage 46 may be discharged from the drainage pipe 20 to the outside of the exhaust gas treatment device 100.
- FIG. 3 is a perspective view showing an example of the exhaust gas lead-out unit 91 in FIG.
- the exhaust gas lead-out unit 91 is provided so that the central axes of the exhaust gas lead-out unit 91 are not parallel to each other in the horizontal direction.
- the central axis of the exhaust gas lead-out unit 91 is parallel to the vertical direction.
- one end 73 side and the other end 75 side are the lower side and the upper side of the exhaust gas lead-out unit 91, respectively.
- the exhaust gas lead-out unit 91 is provided with a discharge unit 61.
- the discharge portion 61 has an inner cylinder portion 62, an outer cylinder portion 63, and a bottom portion 64.
- the exhaust gas 30 passes through the inner cylinder portion 62.
- the outer cylinder portion 63 is provided so as to surround the inner cylinder portion 62 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner cylinder portion 62 is provided inside the outer cylinder portion 63 when viewed from the traveling direction E2 of the exhaust gas 30.
- the bottom portion 64 connects the inner cylinder portion 62 and the outer cylinder portion 63.
- the bottom portion 64 is a part of the discharge portion 61 into which the liquid 40 falls at the discharge portion 61.
- the discharge portion 61 may have a ceiling portion 65.
- the ceiling portion 65 connects the inner cylinder portion 62 and the outer cylinder portion 63 above the bottom portion 64.
- the discharge unit 61 is made of a material that is durable against the exhaust gas 30, the liquid 40, and the drainage 46.
- the discharge portion 61 may be formed of the same material as the side wall 15 (see FIGS. 1 and 2).
- the bottom portion 64 has a main portion 81.
- the main part 81 will be described later.
- the inner cylinder portion 62, the outer cylinder portion 63, and the bottom portion 64 may be provided in a circular shape at least around at least a part of the exhaust gas passing portion 76 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner cylinder portion 62, the outer cylinder portion 63, and the bottom portion 64 are provided in a circumferential shape around the entire circumference of the exhaust gas passing portion 76 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner tubular portion 62 has a side wall 31, an inner side surface 33, and an outer surface 34.
- the inner surface 33 and the outer surface 34 are one surface and the other surface of the side wall 31.
- the inner cylinder portion 62 has an exhaust gas passing portion 77.
- the exhaust gas passage portion 77 is a space surrounded by the side wall 31 (inner side surface 33).
- the side wall 31 may be a part of the side wall 71 extending from one end 73 to the other end 75 in the traveling direction E2 of the exhaust gas 30 in the exhaust gas lead-out portion 91.
- the side wall 31 may be integrated with the side wall 71.
- the exhaust gas passage unit 77 may be a part of the exhaust gas passage unit 76 that extends from one end 73 to the other end 75 in the traveling direction E2 of the exhaust gas 30 in the exhaust gas lead-out unit 91.
- the outer tubular portion 63 has a side wall 39, and an inner side surface 35 and an outer surface 36.
- the inner surface 35 and the outer surface 36 are one surface and the other surface of the side wall 39.
- a discharge space 66 is provided between the inner cylinder portion 62 and the outer cylinder portion 63 and above the bottom portion 64.
- the discharge space 66 may be provided below the ceiling portion 65.
- the discharge space 66 is a space in contact with the outer surface 34 of the inner cylinder portion 62, the inner side surface 35 of the outer cylinder portion 63, and the upper surface of the bottom portion 64.
- the discharge space 66 may be a space in contact with the lower surface of the ceiling portion 65. That is, the discharge space 66 may be a space surrounded by the outer surface 34, the inner surface 35, the upper surface of the bottom portion 64, and the lower surface of the ceiling portion 65.
- the inner cylinder portion 62 may have a window portion 67.
- the window portion 67 penetrates the side wall 31 of the inner cylinder portion 62.
- the window portion 67 connects the inside of the inner cylinder portion 62 (that is, the exhaust gas passing portion 77) and the discharge space 66.
- the window portion 67 may be provided above the bottom portion 64 and may be provided below the ceiling portion 65.
- the inner cylinder portion 62 may have a plurality of window portions 67.
- the inner cylinder portion 62 has eight window portions 67 (window portions 67-1 to window portions 67-8).
- the plurality of window portions 67 may be provided in a circumferential shape around the exhaust gas passing portion 77 when viewed from the traveling direction E2 of the exhaust gas 30.
- the contact area between the liquid 40 and the exhaust gas 30 tends to increase as the particle size of the liquid 40 becomes smaller. Therefore, in order to remove harmful substances such as sulfur oxides (SO x ) contained in the exhaust gas 30, the liquid 40 ejected from the ejection portion 14 (see FIGS. 1 and 2) is in the form of mist (mist). ) Is desirable.
- mist mist
- a part of the liquid 40 ejected into the exhaust gas 30 accompanies the swirling of the exhaust gas 30 and the progress to the exhaust gas discharge port 17 (see FIG. 1), and moves inside the reaction tower 10. It becomes easier to proceed in the direction toward the exhaust gas discharge port 17.
- the exhaust gas 30 When the exhaust gas 30 swirls inside the reaction tower 10 (see FIG. 1), the exhaust gas 30 is closer to the inner peripheral side (central axis side) of the reaction tower 10 when viewed from the traveling direction E1 (see FIG. 1) of the exhaust gas 30. It is easy to turn the outer peripheral side (side wall 15 (see FIG. 1) side) of the reaction tower 10.
- the exhaust gas 30 when the exhaust gas 30 swirls inside the exhaust gas lead-out unit 91, the exhaust gas 30 is located in the exhaust gas lead-out unit 91 rather than the inner peripheral side (central axis side) of the exhaust gas lead-out unit 91 when viewed from the traveling direction E2 of the exhaust gas 30. It is easy to turn on the outer peripheral side (side wall 71 side). Therefore, the mist-like liquid 40 contained in the exhaust gas 30 swirling around the outer peripheral side (side wall 71 side) of the exhaust gas lead-out portion 91 is likely to form a liquid film on the side wall 71.
- the liquid 40 formed into a liquid film on the side wall 71 tends to move the exhaust gas passing portion 76 along the side wall 71 in the direction from one end 73 to the other end 75 (that is, upward).
- the liquid 40 by contact with the exhaust gas 30 bisulfite ions - which may include (HSO 3). Therefore, bisulfite (HSO 3 -) when the liquid 40 containing the is discharged to the outside of the exhaust gas treatment apparatus 100, the liquid 40 which may corrode the external steel exhaust gas treatment apparatus 100 and the like.
- the exhaust gas lead-out unit 91 is provided with a discharge unit 61. Therefore, the discharge unit 61 can discharge the liquid 40 traveling in the direction from one end 73 to the other end 75 along the side wall 71 and the side wall 31. Therefore, exhaust gas treatment apparatus 100 of the present example, bisulfite ion - it is possible to prevent the liquid 40 containing the is discharged to the outside of the exhaust gas treatment apparatus 100 (HSO 3).
- the area of the exhaust gas passing portion 76 in the direction intersecting the traveling direction E2 (Z-axis direction in this example) of the exhaust gas 30 (in the XY plane in this example) is defined as the area S1.
- the area of the gas treatment unit 18 in the liquid spray unit 90 is defined as the area S2.
- the area S2 is the area of the gas processing unit 18 in the direction (in this example, the XY in-plane direction) intersecting the traveling direction E1 (in this example, the Z-axis direction) of the exhaust gas 30.
- the area S1 may be smaller than the area S2.
- the speed of the exhaust gas 30 swirling around the exhaust gas lead-out unit 91 tends to be higher than the speed of the exhaust gas 30 swirling around the liquid spraying unit 90 according to the law of conservation of angular momentum.
- the mist-like liquid 40 contained in the exhaust gas 30 is more likely to accumulate on the side wall 71 of the exhaust gas passing portion 76 as the speed of the exhaust gas 30 increases. Therefore, as the speed of the exhaust gas 30 increases, the amount of the liquid 40 that forms a liquid film on the side wall 71 per unit time tends to increase.
- the area S1 is preferably smaller than the area S2.
- the area S1 may be the maximum value or the minimum value of the area of the exhaust gas passing portion 76. , It may be an average value or a median value.
- the area S2 changes from the exhaust gas introduction port 11 (see FIG. 1) side to the exhaust gas discharge port 17 (see FIG. 1) side of the liquid spray unit 90 along the traveling direction E1 of the exhaust gas 30, the area S1 is a liquid. It may be the maximum value, the minimum value, the average value, or the median value of the area of the gas treatment unit 18 in the spray unit 90.
- the exhaust gas treatment device 100 of this example includes a swivel unit 80 between the liquid spray unit 90 and the discharge unit 61 in the traveling direction E1 and the traveling direction E2 of the exhaust gas 30.
- a swivel portion 80 is provided between one end 73 and the discharge portion 61 inside the exhaust gas lead-out portion 91 (exhaust gas passing portion 76).
- the swivel portion 80 may have a plurality of vane portions 82.
- the vane 82 may be a plate-shaped member having a front surface and a back surface.
- the swirl portion 80 is a swirl.
- the swivel portion 80 has eight vane portions 82 (feather portions 82-1 to vane portions 82-8).
- the eight vane portions 82 may be provided in a circumferential shape around the central axis of the exhaust gas lead-out portion 91.
- the vane portion 82 may be fixed to the side wall 71.
- the plurality of vanes 82 may cover the entire exhaust gas passing portion 76 when viewed from the traveling direction E2 of the exhaust gas 30.
- Exhaust gas 30 passes between two adjacent vanes 82.
- the surface on the other end 75 side is the front surface
- the surface on the one end 73 side is the back surface.
- the exhaust gas 30 passes between the front surface of the vane 82-2 and the back surface of the vane 82-3.
- the exhaust gas 30 is indicated by a thick arrow.
- the distance between the two adjacent vanes 82 on the other end 75 side of the two vanes may be smaller than the distance on the one end 73 side. Since the distance between the other ends 75 of the two vanes is smaller than the distance at one end 73, the speed of the exhaust gas 30 after passing through the swirl portion 80 is the speed of the exhaust gas 30 before passing through the swirl portion 80. It tends to grow larger than. Therefore, when the exhaust gas treatment device 100 includes the swirl portion 80, the amount of the liquid 40 which becomes a liquid film per unit time on the side wall 71 is more likely to increase than when the exhaust gas treatment device 100 does not include the swirl portion 80. Become. Therefore, it is preferable that the exhaust gas treatment device 100 includes a swirling portion 80 between the liquid spraying portion 90 and the discharging portion 61 in the traveling direction E1 and the traveling direction E2 of the exhaust gas 30.
- the discharge unit 61 discharges the liquid 40 into the discharge space 66.
- the liquid 40 traveling in the direction from one end 73 to the other end 75 along the side wall 31 easily passes through the window portion 67 in the direction from the inner side surface 33 to the outer side surface 34.
- the discharge portion 61 of this example discharges the liquid 40 traveling in the direction from one end 73 to the other end 75 along the side wall 31 into the discharge space 66 by passing through the window portion 67.
- the liquid 40 discharged into the discharge space 66 falls to the bottom 64.
- the discharge pipe 51 may be provided below the window portion 67.
- the liquid 40 that has fallen to the bottom 64 is discharged by the discharge pipe 51.
- the discharge pipe 51 is made of a material that is durable against the liquid 40 and the drain 46.
- the discharge pipe 51 may be made of the same material as the side wall 15 (see FIGS. 1 and 2).
- the discharge unit 61 may be provided in the reaction tower 10 (see FIG. 1). When the discharge unit 61 is provided in the reaction tower 10, the discharge unit 61 may be provided between the liquid spray unit 90 (see FIG. 1) and the exhaust gas discharge port 17 (see FIG. 1) in the reaction tower 10.
- the exhaust gas lead-out unit 91 may be an independent liquid discharge unit 161.
- the discharge unit 61 may be provided in the liquid discharge unit 161.
- the liquid discharge unit 161 may be connected to the exhaust gas treatment device 100 by fastening the fastening portion 74 of the liquid discharge unit 161 and the fastening portion 92 of the exhaust gas treatment device 100 (see FIG. 1).
- FIG. 4 is an enlarged perspective view of the connection portion between the discharge portion 61 and the discharge pipe 51 in FIG.
- the inner cylinder portion 62, the outer cylinder portion 63 and the bottom portion 64, and the discharge pipe 51 are shown separately in order to make the connection portion between the discharge portion 61 and the discharge pipe 51 easy to understand.
- the outer cylinder portion 63 may be provided with an opening 37 into which the discharge pipe 51 is inserted.
- the opening 37 penetrates the side wall 39 from the outer surface 36 to the inner side surface 35 (see FIG. 3) of the side wall 39 of the outer tubular portion 63.
- the opening 37 may be in contact with the lower end 38 of the side wall 39 of the outer tubular portion 63.
- the opening 37 may be provided above the lower end 38.
- the opening 37 has a notch shape in contact with the lower end 38.
- the range of the opening 37 in contact with the lower end 38 is indicated by a double-headed arrow.
- the lower end 38 may be parallel to the XY plane (see FIG. 1).
- the bottom 64 may be provided with a first notch 85.
- the surface of the bottom 64 on the other end 75 side is the upper surface 83, and the surface on the one end 73 side is the lower surface 84.
- the first notch 85 may penetrate the bottom portion 64 from the upper surface 83 to the lower surface 84 in the traveling direction E2 of the exhaust gas 30.
- the upper surface 83 and the lower surface 84 may be parallel to the XY plane.
- the range of the first notch 85 in the XY plane and the range in the Z-axis direction are indicated by double-headed arrows.
- FIG. 4 the correspondence between the position of the opening 37 and the position of the first notch 85 when the outer cylinder portion 63 and the bottom portion 64 are connected is shown by a broken line.
- the correspondence between the position of the tip 59 (described later) of the discharge pipe 51 and the position of the first notch 85 when the discharge pipe 51 is connected to the bottom portion 64 is shown by a broken line.
- the bottom portion 64 has a main portion 81.
- the main portion 81 of the bottom portion 64 is at least a part of the upper surface 83 provided at the same height in the vertical direction, and is in the flow path direction of the liquid 40 on the upper surface 83 (in this example, the inner cylinder portion 62). It may be part of the bottom 64, which occupies more than half of the total length of the flow paths of the liquid 40 leading to the first notch 85) in the direction along the perimeter).
- the liquid 40 that has fallen on the upper surface 83 of the bottom portion 64 goes around the inner cylinder portion 62 clockwise and counterclockwise, and then is discharged to the discharge pipe 51.
- the sum of the flow paths of the liquid 40 leading to the first notch 85 is, in the example of FIG. 3, the sum of the length of the clockwise flow path of the liquid 40 and the length of the counterclockwise flow path. Point to.
- the main portion 81 of the bottom 64 does not include a local recess in the top 83 (eg, a local depression in the top 83).
- the entire bottom portion 64 provided in a circumferential shape around the inner tubular portion 62 is the main portion.
- the bottom portion 64 may be provided in a spiral shape around the inner tubular portion 62.
- the bottom portion 64 is provided in a circular shape in a spiral shape
- one end of the bottom portion 64 in the circumferential direction is provided above the other end in the vertical direction.
- the 83 of the bottom portion 64 may be inclined with respect to the vertical direction from one end to the other end.
- the discharge pipe 51 may be connected to the other end of the bottom portion 64.
- the lower end 38 of the outer tubular portion 63 is arranged below the upper surface 83 of the bottom portion 64.
- the lower end 38 may be arranged at the same position as the lower surface 84 of the bottom 64 in the traveling direction E2 (Z-axis direction) of the exhaust gas 30, or may be arranged below the lower surface 84.
- the first notch 85 corresponds to the opening 37.
- the fact that the first notch 85 corresponds to the opening 37 means that the position of the first notch 85 and the position of the opening 37 coincide with each other in the XY plane and in the Z-axis direction.
- the discharge pipe 51 is connected to the first notch 85.
- the discharge pipe 51 is connected to the opening 37.
- the discharge pipe 51 has a pipe wall 53 and a liquid passage portion 54.
- the liquid passage portion 54 is a space surrounded by the pipe wall 53.
- the liquid passage portion 54 is a space through which the liquid 40 discharged into the discharge space 66 (see FIG. 3) passes.
- the extension direction (direction of the central axis) of the discharge pipe 51 is the X-axis direction.
- One end of the discharge pipe 51 on the side connected to the discharge portion 61 in the X-axis direction is a tip 59.
- the discharge pipe 51 may have an insertion portion 55.
- the discharge pipe 51 is provided with a second notch 56 in the pipe wall 53 above the insertion portion 55.
- the end portion 79 is the end portion of the second notch 56 on the side opposite to the tip end 59 in the X-axis direction.
- the end portion 79 is an end portion of the pipe wall 53 above the second notch 56 on the tip 59 side.
- the second notch 56 provided in the pipe wall 53 above the insertion portion 55 means that the pipe wall 53 above the insertion portion 55 is cut out from the tip 59 to the end 79 in the X-axis direction. Therefore, it refers to a state in which the pipe wall 53 does not exist in at least a part above the insertion portion 55.
- the distance between the tip 59 and the end 79 is the inner side of the outer surface 34 of the side wall 31 of the inner cylinder 62 and the inner side 39 of the outer cylinder 63. It may be less than or equal to the distance from the side surface 35. In the extending direction of the discharge pipe 51 (in the X-axis direction in this example), the distance between the tip 59 and the end portion 79 is less than the distance between the outer surface 34 and the outer surface 36 on the side wall 39 of the outer cylinder portion 63. You may.
- FIG. 5 shows a connection portion between the discharge unit 61 and the discharge pipe 51 in a state where the discharge unit 61 and the discharge pipe 51 shown in FIG. 4 are connected, as viewed from the traveling direction E2 (Z-axis direction) of the exhaust gas 30. It is a figure which shows an example.
- FIG. 5 is a view of the connection portion between the discharge portion 61 and the discharge pipe 51 viewed from a position below the ceiling portion 65 (see FIG. 3) and above the bottom portion 64 in the Z-axis direction.
- the liquid passage portion 54 of the discharge pipe 51 may be connected to the discharge space 66 through the outer cylinder portion 63.
- the liquid passage portion 54 penetrates the side wall 39 of the outer cylinder portion 63 in the X-axis direction and is connected to the discharge space 66.
- the liquid passage portion 54 penetrates the outer cylinder portion 63 and is connected to the discharge space 66, the liquid 40 discharged into the discharge space 66 and dropped on the upper surface 83 of the bottom portion 64 is discharged into the discharge space 66 in the liquid passage portion 54. It becomes easier to flow to a part connected to.
- the discharge pipe 51 may penetrate the outer cylinder portion 63 and be in contact with the inner cylinder portion 62.
- the tip 59 of the discharge pipe 51 may be in contact with the inner cylinder portion 62.
- the pipe wall 53 of the discharge pipe 51 has an inner side surface 57 and an outer side surface 58.
- the liquid passage portion 54 is a space surrounded by the inner side surface 57.
- the position of the inner side surface 57 outside the discharge portion 61 is shown by a fine broken line.
- the outer surface 58 is arranged below the bottom portion 64.
- the position of the outer surface arranged below the bottom 64 is indicated by a fine broken line.
- the position where the outer surface 58 on the pipe wall 53 of the discharge pipe 51 and the outer surface 34 on the side wall 31 of the inner cylinder portion 62 are in contact with each other is defined as position P1.
- the position where the inner side surface 57 of the pipe wall 53 of the discharge pipe 51 and the outer side surface 36 of the side wall 39 of the outer cylinder portion 63 intersect in the X-axis direction is defined as position P2.
- the insertion portion 55 of the discharge pipe 51 is a part of the discharge pipe 51 between the position P1 and the position P2 in the X-axis direction.
- the range of the insertion portion 55 in the X-axis direction is indicated by double-headed arrows.
- the insertion portion 55 of the discharge pipe 51 is arranged inside the discharge portion 61.
- the tip of the insertion portion 55 when viewed from the direction from the exhaust gas discharge port 17 (see FIG. 1) to the exhaust gas introduction port 11 (see FIG. 1) (direction opposite to the traveling direction E2 (Z-axis direction) of the exhaust gas 30).
- the curvature of 59 may be equal to the curvature of the inner cylinder 62.
- the curvature of the tip 59 and the curvature of the outer surface 34 of the inner cylinder portion 62 are equal to each other when viewed from the traveling direction E2 of the exhaust gas 30.
- the curve showing the curved tip 59 and the curve showing the outer surface 34 in contact with the tip 59 may overlap.
- the curved tip 59 may be in contact with the outer surface 34 over the entire area as seen from the traveling direction E2 of the exhaust gas 30.
- the opening 37 in the side wall 39 of the outer cylinder portion 63 may be in contact with the liquid passage portion 54 in the end portion 79 of the discharge pipe 51. Since the opening 37 is in contact with the liquid passage portion 54 at the end portion 79, the liquid 40 discharged into the discharge space 66 and dropped on the upper surface 83 of the bottom portion 64 can easily flow to the liquid passage portion 54.
- the discharge unit 61 and the discharge pipe 51 are connected so that the discharge space 66 is sealed.
- the discharge portion 61 and the discharge pipe 51 By connecting the discharge portion 61 and the discharge pipe 51 so that the discharge space 66 is sealed, the liquid 40 discharged into the discharge space 66 and dropped on the upper surface 83 of the bottom 64 excludes the liquid passage portion 54. It becomes difficult to flow out to the outside of the discharge space 66.
- the contact portion between the outer surface 58 of the pipe wall 53 of the discharge pipe 51 and the lower surface 84 (see FIG. 4) of the bottom 64 may be welded.
- the contact portion between the end portion 79 of the pipe wall 53 of the discharge pipe 51 and the outer surface 36 of the side wall 39 of the outer cylinder portion 63 may be welded.
- the welded portion is shown by hatching.
- the discharge space 66 may be sealed by welding the discharge portion 61 and the discharge pipe 51.
- the extension line of the outer surface 58 in the X-axis direction is shown by a rough broken line portion.
- the broken line portion extends from the position P1 to the exhaust gas passing portion 77 side in the X-axis direction.
- the position where the broken line portion and the inner side surface 33 of the inner cylinder portion 62 intersect in the X-axis direction is defined as the position P1'.
- the insertion portion 55 of the discharge pipe 51 may be a part of the discharge pipe 51 between the position P1'and the position P2 in the X-axis direction.
- the discharge pipe 51 may be in contact with the inner side surface 33 of the inner cylinder portion 62.
- FIG. 6 is a diagram showing an example of a connection portion between the discharge unit 61 and the discharge pipe 51 viewed in the Y-axis direction in a state where the discharge unit 61 and the discharge pipe 51 shown in FIGS. 4 and 5 are connected. Is. As described above, the position of the lower end 38 of the side wall 39 may coincide with the position of the lower surface 84 of the bottom 64 in the traveling direction E2 (Z-axis direction) of the exhaust gas 30.
- the tip 59 of the discharge pipe 51 and the outer surface 34 of the side wall 31 of the inner cylinder portion 62 are in contact with each other.
- the end portion 79 of the discharge pipe 51 and the outer surface 36 of the side wall 39 of the outer cylinder portion 63 are in contact with each other.
- the connection portion between the discharge portion 61 and the discharge pipe 51 is shown by hatching.
- the connecting portion may be a welded portion.
- the opening 37 in the side wall 39 of the outer tubular portion 63 is in contact with the liquid passage portion 54 in the end portion 79 of the discharge pipe 51.
- the liquid passage portion 54 in the insertion portion 55 of the discharge pipe 51 is arranged below the discharge space 66.
- the discharge pipe 51 By connecting the discharge pipe 51 to the discharge space 66 through the outer cylinder portion 63, the discharge space 66 and the liquid passage portion 54 below the discharge space 66 communicate with each other. Therefore, the liquid 40 discharged into the discharge space 66 and dropped on the upper surface 83 of the bottom portion 64 is likely to fall into the liquid passing portion 54 below the discharge space 66. Therefore, the liquid 40 that has fallen on the upper surface 83 is less likely to stay on the upper surface 83.
- FIG. 7 is a diagram showing an example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- At least a part of the liquid passing portion 54 penetrating the outer tubular portion 63 is arranged below the upper surface 83 of the main portion 81 of the bottom portion 64.
- the liquid passing portion 54 penetrating the outer tubular portion 63 is one of the liquid passing portions 54 arranged in the discharge space 66 (see FIGS. 4 to 6) of the liquid passing portions 54. You may point to the department.
- the liquid passing portion 54 penetrating the outer tubular portion 63 may refer to a part of the liquid passing portion 54 included in the insertion portion 55.
- a part of the liquid passing portion 54 arranged below the upper surface 83 of the main portion 81 of the bottom portion 64 is shown by hatching with diagonal lines.
- the tip 59 of the discharge pipe 51 is shown by hatching different from the hatching showing a part of the liquid passing portion 54.
- the tip 59 is the tip of the insertion portion 55.
- the end 79 of the second notch 56 is not hatched.
- a part of the liquid passing portion 54 arranged below the upper surface 83 of the main portion 81 of the bottom portion 64 is one of the liquid passing portions 54 arranged below the second notch 56. It is a department.
- the liquid 40 may corrode the discharge portion 61 (at least one of the bottom portion 64, the inner cylinder portion 62, and the outer cylinder portion 63).
- at least a part of the liquid passing portion 54 penetrating the outer tubular portion 63 is arranged below the upper surface 83 of the main portion 81 of the bottom portion 64. ing. Therefore, the liquid 40 that has flowed through the upper surface 83 of the bottom 64 easily flows into the liquid passing portion 54. Therefore, the liquid 40 is less likely to stay on the upper surface 83. Therefore, in the exhaust gas treatment device 100 in this example, the corrosion of the discharge portion 61 by the liquid 40 treated with the exhaust gas 30 is easily suppressed.
- FIG. 7 the outer edge of the opening 37 provided in the side wall 39 of the outer tubular portion 63 (see FIGS. 4 to 6) is shown by a thick solid line.
- FIG. 7 the position of the opening 37 and a part of the outer surface 58 of the pipe wall 53 of the discharge pipe 51 above the lower end 38 of the side wall 39 overlap. That is, in this example, the part of the outer surface 58 and the opening 37 are in contact with each other.
- the ranges of the first notch 85 provided in the bottom 64 in the Y-axis direction and the Z-axis direction are indicated by double-headed arrows.
- the end portion of the bottom portion 64 that is in contact with the first notch 85 is referred to as the end portion 86.
- the ends 86 are the ends of the bottom 64 arranged at both ends of the first notch 85 in a direction parallel to the Y axis. In this example, the end 86 is in contact with the first notch 85.
- the end portion 86 of this example is arranged at a position overlapping a part of the opening 37.
- the upper end of the pipe wall 53 below the second notch 56 of the discharge pipe 51 is defined as the upper end 78.
- the upper end 78 refers to the uppermost end of the pipe wall 53 below the second notch 56 in the vertical direction (Z-axis direction in this example).
- the upper end 78 may be a planar region, or may be a linear region extending in the horizontal direction (in the XY plane in this example) and in the direction of the central axis of the discharge pipe 51.
- the upper end 78 of this example is a planar region parallel to the XY plane.
- the position of the center of gravity of the discharge pipe 51 is defined as the position F.
- the position F is the position of the center of the cross section of the circular liquid passing portion 54.
- the vertical straight line passing through the position F is defined as the F1-F2 line.
- the F1-F2 lines are indicated by alternate long and short dash lines.
- the pipe wall 53 on one side and the pipe wall 53 on the other side in the Y-axis direction are referred to as a pipe wall 53-1 and a pipe wall 53-2, respectively.
- the pipe wall 53-1 and the pipe wall 53-2 are pipe walls 53 arranged on one side and the other side, respectively, from the lower end of the outer surface 58 of the discharge pipe 51 in the YZ cross section.
- the lower end of the outer surface 58 of the discharge pipe 51 is the lower intersection of the two intersections of the F1-F2 line and the outer surface 58.
- the upper end 78 on one side and the upper end 78 on the other side in the Y-axis direction are referred to as an upper end 78-1 and an upper end 78-2, respectively.
- the upper end 78-1 and the upper end 78-2 are the upper ends 78 of the pipe wall 53-1 and the pipe wall 53-2, respectively.
- the position of the upper end 78-1 and the position of the upper end 78-2 in the Z-axis direction may be equal or different.
- the upper end 78 When viewed from the direction intersecting the cross section of the discharge pipe 51 (in this example, when viewed in the X-axis direction), the upper end 78 is arranged at the same height as the upper surface 83 of the bottom 64, or is the bottom. It may be arranged below the upper surface 83 of 64. In this example, the upper end 78 is arranged at the same height as the upper surface 83 of the bottom 64. By arranging the upper end 78 at the same height as the upper surface 83 of the bottom 64 or below the upper surface 83 of the bottom 64, the liquid 40 falls on the upper surface 83 of the bottom 64 and the liquid 40 is placed at the end. It becomes difficult to stay on the upper surface 83 above the 86.
- the bottom portion 64 on one side and the bottom portion 64 on the other side in the Y-axis direction are referred to as a bottom portion 64-1 and a bottom portion 64-2, respectively.
- the upper surface 83-1 is the upper surface 83 of the bottom portion 64-1
- the upper surface 83-2 is the upper surface 83 of the bottom portion 64-2.
- the upper end 78-1 is the same height as the upper surface 83-1. Or may be located below the top surface 83-1 and the top edge 78-2 may be located at the same height as the top surface 83-2 or below the top surface 8-3. May be placed.
- FIG. 8 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- the thickness of the end portion 86 in the direction from the upper surface 83 to the lower surface 84 of the bottom portion 64 is defined as the thickness D1.
- the thickness between the upper surface 83 and the lower surface 84 of the bottom 64 other than the end 86 is defined as the thickness D2.
- the thickness D1 is larger than the thickness D2.
- the bottom 64 of this example differs from the bottom 64 shown in FIG. 7 in this respect.
- the upper end 78 of the discharge pipe 51 may be arranged in the range of the thickness D2 downward from the upper surface 83 of the bottom portion 64.
- the thickness D1 of the end portion 86 is larger than the thickness D2
- the range in which the upper end 78 can be arranged tends to be wider than the example shown in FIG. Therefore, in this example, the bottom portion 64 and the discharge pipe 51 are more easily connected than in the example shown in FIG.
- FIG. 9 is a diagram showing an example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- FIG. 9 is the same view as that of FIG. 7, but the reference numeral of the opening 37 is omitted, and the opening 37 is not shown by a solid line. Further, in FIG. 9, the illustration of the liquid 40 is omitted.
- the range of the first notch 85 and the range of the second notch 56 when the discharge pipe 51 is viewed in the X-axis direction are shown by a thick broken line portion and a thick alternate long and short dash line portion, respectively. ..
- the range of the first notch 85 in the Z-axis direction may be between the position of the upper surface 83 and the position of the lower surface 84 of the bottom 64.
- the second notch 56 of the discharge pipe 51 may be connected to the first notch 85 of the bottom 64.
- FIG. 9 is an example of the connection between the first notch 85 and the second notch 56.
- the upper end of the first notch 85 and the lower end of the second notch 56 are in contact with each other.
- the position of the lower end of the second notch 56 is equal to the position of the upper end 78 of the tube wall 53 below the second notch 56.
- the position of the upper end of the first notch 85 coincides with the position of the upper end 78.
- the first notch 85 and the second notch 56 do not overlap when the discharge pipe 51 is viewed in the X-axis direction.
- FIG. 10 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- FIG. 10 is another example of the connection between the first notch 85 and the second notch 56.
- the upper end 78 of the pipe wall 53 is arranged below the upper end of the first notch 85.
- the upper end 78 is arranged between the upper end and the lower end of the first notch 85 in the Z-axis direction.
- a part of the first notch 85 and a part of the second notch 56 overlap when the discharge pipe 51 is viewed in the X-axis direction.
- the upper end 78 of the pipe wall 53 may be arranged between the upper end and the lower end of the first notch 85 in the Z-axis direction.
- FIG. 11 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- FIG. 11 is another example of the connection between the first notch 85 and the second notch 56.
- the thickness of the end 86 of the bottom 64 is the thickness D1 (see FIG. 8).
- the upper end 78 of the pipe wall 53 is arranged below the lower end of the first notch 85.
- the entire first notch 85 and a part of the second notch 56 overlap when the discharge pipe 51 is viewed in the X-axis direction.
- the thickness of the end 86 is greater than the thickness D2 (see FIG. 8) (eg, the thickness D1), the upper end 78 may be located below the lower end of the first notch 85. If the thickness of the end 86 is greater than the thickness D2, the upper end 78 may be located between the upper end of the first notch 85 and the lower end of the end 86.
- the fact that the second notch 56 is connected to the first notch 85 refers to any of the examples shown in FIGS. 9 to 11.
- the upper end 78 of the pipe wall 53 may be arranged at a position above the lower end of the end portion 86 of the bottom portion 64 and below the upper end (upper surface 83) in the Z-axis direction.
- FIG. 12 is an enlarged perspective view of the discharge pipe 51 shown in FIG.
- the cross-sectional area of the liquid passing portion 54 is defined as the area S3.
- the cross-sectional area of the liquid passing portion 54 is the area of the liquid passing portion 54 in the cross section perpendicular to the central axis (X axis in this example) of the discharge pipe 51.
- the area corresponding to the area S3 is shown by hatching.
- the area of the second notch 56 in the direction intersecting the central axis of the discharge pipe 51 is defined as the area S4.
- the area S4 is the area of the liquid passing portion 54 in the direction intersecting the central axis of the discharge pipe 51.
- the area S4 is the area of the YZ cross section of the liquid passing portion 54 at the end 79 of the second notch 56.
- the area of the second notch 56 in the direction of the central axis of the discharge pipe 51 is defined as the area S5.
- the area S5 is the area of the liquid passing portion 54 in the direction of the central axis of the discharge pipe 51.
- the area S5 is the area of the XY cross section of the liquid passing portion 54 at the upper end 78 (the lower end of the second notch 56).
- the area of the second notch 56 is defined as the area SC.
- the area SC refers to the sum of the area S4 and the area S5.
- the region corresponding to the area SC is shown by hatching different from the hatching showing the area S3.
- Area SC may be area S3 or more.
- the liquid 40 discharged into the discharge space 66 (see FIGS. 4 to 6) and dropped on the upper surface 83 (see FIGS. 4 to 11) of the bottom 64 passes through the region corresponding to the area SC, and then has a second notch.
- the liquid passing portion 54 flows on the side opposite to the tip 59 rather than 56. Therefore, when the area SC is the area S3 or more, the liquid 40 that has fallen on the upper surface 83 (see FIGS. 4 to 11) of the bottom portion 64 is less likely to stay on the upper surface 83.
- the area SC is preferably larger than the area S3. The larger the area SC is than the area S3, the more difficult it is for the liquid 40 to stay on the upper surface 83.
- FIG. 13 is a perspective view showing another example of the discharge pipe 51.
- the discharge pipe 51 of this example is provided with a pipe wall 53 at the position of the second notch 56 in the example of FIG.
- the pipe wall 53 is referred to as a pipe wall 53-1 and the pipe wall 53 excluding the pipe wall 53-1 is referred to as a pipe wall 53-2.
- the discharge pipe 51 of this example is provided with an opening 69 in the pipe wall 53-1.
- the discharge pipe 51 of this example is different from the discharge pipe 51 shown in FIG. 12 in this respect.
- the opening 69 of this example penetrates the pipe wall 53.
- the outside of the discharge pipe 51 and the liquid passing portion 54 communicate with each other by an opening 69.
- the pipe wall 53-1 may be provided with a plurality of openings 69.
- the tube wall 53-1 may be a so-called punch metal.
- the pipe wall 53-1 may be a mesh-shaped wire mesh.
- the discharge pipe 51 of this example is provided with an opening 69 in the pipe wall 53-1, it is discharged into the discharge space 66 (see FIGS. 4 to 6) and is discharged from above the bottom 64 to the upper surface 83 (FIGS. 4 to 6).
- the liquid 40 that has fallen in the direction (see) is likely to be discharged from the discharge pipe 51 after passing through the opening 69.
- the opening 69 is referred to as an opening 69-1, and the opening 69 excluding the opening 69-1 is referred to as an opening 69-2.
- FIG. 14 is a diagram showing another example in which the connection portion between the discharge portion 61 and the discharge pipe 51 in FIGS. 5 and 6 is viewed in the X-axis direction.
- the reference numeral of the opening 37 in FIG. 7 the solid line indicating the opening 37, and the illustration of the liquid 40 are omitted.
- the curvature of a part of the pipe wall 53 of the discharge pipe 51 in contact with the bottom 64 is defined as the curvature R1 and the curvature R1'.
- the curvature of a part of the pipe wall 53 other than the part thereof is defined as the curvature R2 and the curvature R2'.
- a straight line extending in a direction intersecting the F1-F2 line above the upper surface 83 of the bottom portion 64 and below the upper end of the discharge pipe 51 is defined as the H1-H1'line.
- a straight line extending in a direction intersecting the F1-F2 line below the lower surface 84 of the bottom portion 64 and above the lower end of the discharge pipe 51 is defined as the H2-H2'line.
- the H1-H1'and H2-H2' lines are parallel to the top surface 83.
- the curvature R1 is the curvature of the outer surface 58 of the discharge pipe 51 between H2 and H1.
- the curvature R1' is the curvature of the outer surface 58 between H2'and H1'.
- the curvature R2 is the curvature of the outer surface 58 between H1 and H1'.
- the curvature R2' is the curvature of the outer surface 58 between H2 and H2'.
- the curvature R1 is larger than the curvature R2 and the curvature R2', and the curvature R1'is larger than the curvature R2 and the curvature R2'.
- the discharge pipe 51 of this example is different from the discharge pipe shown in FIG. 7 in this respect.
- both the curvature R1 and the curvature R1' are larger than the curvature R2 and the curvature R2', but one of the curvature R1 and the curvature R1'may be larger than the curvature R2 and the curvature R2'. ..
- a part of the curvature R1 of the pipe wall 53 of the discharge pipe 51 in contact with the bottom 64 is larger than at least one of the curvature R2 and the curvature R2'of the other part except the part, so that the upper end in the Z-axis direction
- the range in which the 78 can be arranged tends to be wider than the example shown in FIG.
- Curvature R1 and curvature R1' may be equal or different.
- the curvature R2 and the curvature R2' may be equal or different.
- FIG. 15 is a diagram showing an example when the exhaust gas lead-out unit 91 shown in FIG. 3 is viewed from the traveling direction E2 of the exhaust gas 30. However, the ceiling portion 65, the swivel portion 80, and the discharge pipe 51 in FIG. 3 are omitted.
- the window portion 67 is provided on the inner cylinder portion 62.
- the position C1 is the central position in the columnar exhaust gas lead-out unit 91.
- the plurality of window portions 67 may be provided in a circumferential shape around the exhaust gas passing portion 77, centering on the position C1 when viewed from the traveling direction E2 of the exhaust gas 30.
- the plurality of window portions 67 may be provided at equal intervals around the exhaust gas passing portion 77 when viewed from the traveling direction E2 of the exhaust gas 30.
- the window portions 67-1 to the window portions 67-8 are provided around the exhaust gas passing portion 77 at intervals of 45 degrees when viewed from the traveling direction E2 of the exhaust gas 30.
- the positions of the window portions 67-1 to the window portions 67-8 are indicated by broken lines.
- FIG. 16 is a diagram showing another example when the exhaust gas lead-out unit 91 is viewed from the traveling direction E2 of the exhaust gas 30.
- the inner tubular portion 62 further has an eaves portion 21.
- the exhaust gas lead-out unit 91 of this example is different from the exhaust gas lead-out unit 91 shown in FIG. 15 in this respect.
- the eaves portion 21 is shown by hatching.
- the eaves portion 21 of this example extends from the side wall 31 of the inner cylinder portion to the inside of the inner cylinder portion 62 (exhaust gas passing portion 77).
- the eaves portion 21 is drawn away from the side wall 31 for the sake of visibility of the drawing, but the eaves portion 21 is in contact with the side wall 31.
- the eaves portion 21 extends from the side wall 31 above the window portion 67 (the other end 75 side (see FIG. 3) in the traveling direction E2 of the exhaust gas 30) to the inside of the inner cylinder portion 62.
- the inner tubular portion 62 may have a plurality of eaves portions 21.
- the inner tubular portion 62 has eight eaves 21 (eaves 21-1 to eaves 21-8).
- the eaves 21-1 to 21-8 are arranged above the window 67-1 to the window 67-1, respectively.
- the inner tubular portion 62 may have one eaves portion 21 provided continuously and circumferentially along the inner side surface 33 above the plurality of window portions 67.
- FIG. 17 is a diagram showing an example of a cross section taken along the line GG'in FIG.
- the GG'line is an XZ cross section passing through the exhaust gas passage portion 77, the eaves portion 21-5, the side wall 31 of the inner cylinder portion 62, the discharge space 66, and the side wall 39 of the outer cylinder portion 63.
- the eaves portion 21 of this example extends from the side wall 31 of the inner cylinder portion to the inside of the inner cylinder portion 62 (exhaust gas passing portion 77).
- the end of the eaves 21-5 on the side wall 31 side in the X-axis direction is connected to the side wall 31.
- the end portion of the eaves portion 21-5 is connected to the side wall 31 above the window portion 67 (on the other end 75 side).
- the exhaust gas 30 that swirls the exhaust gas passing portion 77 and travels in the traveling direction E2 may contain a mist-like liquid 40.
- the liquid 40 easily forms a liquid film by accumulating on the side wall 71.
- the liquid 40 formed into a liquid film is referred to as a liquid 44.
- the mist-like liquid 40 and liquid 44 are shown by hatching.
- the mist-like liquid 40 tends to travel in the direction of the window portion 67 due to the lower surface 23 of the eaves portion 21. Therefore, more liquid 40 and liquid 44 are more likely to be discharged into the discharge space 66 than when the inner cylinder portion 62 does not have the eaves portion 21.
- the eaves portion 21 may guide the mist-like liquid 40 to the window portion 67.
- the angle formed by the lower surface 23 of the eaves 21 and the inner surface 33 is defined as the angle ⁇ .
- the angle ⁇ may be an acute angle. Since the angle ⁇ is an acute angle, the mist-like liquid 40 is more likely to be guided to the window portion 67 than when the angle ⁇ is 90 degrees or more.
- FIG. 18 is another perspective view showing an example of the exhaust gas lead-out unit 91 in FIG.
- the exhaust gas lead-out unit 91 of this example is further provided with a recovery unit 25.
- the exhaust gas lead-out unit 91 of this example is different from the exhaust gas lead-out unit 91 shown in FIG. 3 in this respect.
- the exhaust gas lead-out unit 91 may include a recovery unit 25 at least between the exhaust unit 61 and the other end 75 and between the exhaust unit 61 and one end 73 in the traveling direction E2 of the exhaust gas 30.
- the exhaust gas lead-out unit 91 of this example includes a recovery unit 25 between the exhaust gas unit 61 and the other end 75 in the traveling direction E2 of the exhaust gas 30.
- the collection unit 25 has an inner cylinder portion 26, an outer cylinder portion 27, and a bottom portion 28.
- the exhaust gas 30 passes through the inner cylinder portion 26.
- the outer cylinder portion 27 is provided so as to surround the inner cylinder portion 26 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner cylinder portion 26 is provided inside the outer cylinder portion 27 when viewed from the traveling direction E2 of the exhaust gas 30.
- the bottom 28 connects the inner cylinder 26 and the outer cylinder 27.
- the bottom 28 is a part of the recovery unit 25 on which the liquid 40 falls.
- the recovery unit 25 may have a ceiling unit 43.
- the ceiling portion 43 connects the inner cylinder portion 26 and the outer cylinder portion 27 above the bottom portion 28.
- the bottom 28 may have a main portion, similar to the main portion 81 of the discharge portion 61.
- the recovery unit 25 is made of a material that is durable against the exhaust gas 30, the liquid 40, and the drainage 46.
- the recovery section 25 may be made of the same material as the side wall 15 (see FIGS. 1 and 2).
- the inner cylinder portion 26, the outer cylinder portion 27, and the bottom portion 28 may be provided in a circular shape at least in a part around the exhaust gas passing portion 76 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner cylinder portion 26, the outer cylinder portion 27, and the bottom portion 28 are provided in a circumferential shape around the entire circumference of the exhaust gas passing portion 76 when viewed from the traveling direction E2 of the exhaust gas 30.
- the inner tubular portion 26 has a side wall 45, an inner side surface 47, and an outer surface 48.
- the inner surface 47 and the outer surface 48 are one surface and the other surface of the side wall 45.
- the inner cylinder portion 26 has an exhaust gas passing portion 49.
- the exhaust gas passage portion 49 is a space surrounded by the side wall 45 (inner side surface 47).
- the side wall 45 may be a part of the side wall 71 extending from one end 73 to the other end 75 in the traveling direction E2 of the exhaust gas 30 in the exhaust gas lead-out portion 91.
- the side wall 45 may be integrated with the side wall 71.
- the exhaust gas passing portion 49 may be a part of the exhaust gas passing portion 76 extending from one end 73 to the other end 75 in the traveling direction E2 of the exhaust gas 30 in the exhaust gas lead-out unit 91.
- the outer tubular portion 27 has a side wall 89, an inner side surface 87, and an outer surface 88.
- the inner surface 87 and the outer surface 88 are one surface and the other surface of the side wall 89.
- a collection space 93 is provided between the inner cylinder portion 26 and the outer cylinder portion 27 and above the bottom portion 28.
- the recovery space 93 may be provided below the ceiling portion 43.
- the recovery space 93 is a space in contact with the outer surface 48 of the inner cylinder 26, the inner surface 87 of the outer cylinder 27, and the upper surface of the bottom 28.
- the recovery space 93 may be a space in contact with the lower surface of the ceiling portion 43. That is, the recovery space 93 may be a space surrounded by the outer surface 48, the inner surface 87, the upper surface of the bottom portion 28, and the lower surface of the ceiling portion 43.
- the inner cylinder portion 26 may have a window portion 29.
- the window portion 29 penetrates the side wall 45 of the inner cylinder portion 26.
- the window portion 29 connects the inside of the inner cylinder portion 26 (that is, the exhaust gas passing portion 49) and the recovery space 93.
- the window portion 29 may be provided above the bottom portion 28 and may be provided below the ceiling portion 43.
- the inner cylinder portion 26 may have a plurality of window portions 29.
- the inner cylinder portion 26 has eight window portions 29 (window portions 29-1 to window portions 29-8).
- the plurality of window portions 29 may be provided in a circumferential shape around the exhaust gas passing portion 49 when viewed from the traveling direction E2 of the exhaust gas 30.
- the recovery unit 25 may have an inner side wall 94.
- the inner side wall 94 is provided further inside the inner cylinder portion 26.
- the inner side wall 94 may be provided in a circumferential shape so as to surround the exhaust gas passing portion 49.
- the recovery pipe 41 may be provided below the window portion 29.
- the connection portion between the recovery pipe 41 and the recovery unit 25 may have the same mode as the connection portion between the discharge pipe 51 and the discharge unit 61 shown in FIGS. 4 to 14.
- the recovery pipe 41 is made of a material that is durable against the liquid 40 and the drainage 46.
- the recovery tube 41 may be made of the same material as the side wall 15 (see FIGS. 1 and 2).
- the recovery unit 25 may be provided in the reaction tower 10 (see FIG. 1). When the recovery unit 25 is provided in the reaction tower 10, the recovery unit 25 may be provided between the liquid spray unit 90 (see FIG. 1) and the exhaust gas discharge port 17 (see FIG. 1) in the reaction tower 10.
- the exhaust gas lead-out unit 91 may be an independent liquid discharge unit 161.
- the discharge unit 61 and the recovery unit 25 may be provided in the liquid discharge unit 161.
- the liquid discharge unit 161 may be connected to the exhaust gas treatment device 100 by fastening the fastening portion 74 of the liquid discharge unit 161 and the fastening portion 92 of the exhaust gas treatment device 100 (see FIG. 1).
- FIG. 19 is a diagram showing an example of a cross section on the JJ'line in FIG.
- the JJ'line is an XZ cross section passing through the exhaust gas passage portion 49, the inner side wall 94, the side wall 45 of the inner cylinder portion 26, the recovery space 93, and the side wall 89 of the outer cylinder portion 27.
- the inner side wall 94 is provided on the exhaust gas passing portion 49 side of the side wall 45 of the inner cylinder portion 26 in the JJ'cross section.
- the inner side wall 94 has a first side surface 95 and a second side surface 96.
- the first side surface 95 is a surface on the inner side wall 94 on the exhaust gas passage portion 49 side.
- the second side surface 96 is a surface of the inner side wall 94 on the side wall 45 side.
- the ceiling portion 43 may penetrate the side wall 71. In FIG. 19, one end and the other end of the ceiling portion 43 in the X-axis direction are connected to the outer cylinder portion 27 and the inner side wall 94, respectively.
- the ceiling portion 43 includes a lower surface 97.
- the lower surface 97 may be connected to the second side surface 96 of the inner side wall 94 and the inner side surface 87 of the side wall 89.
- the recovery unit 25 may have a first liquid passage port 98 and a second liquid passage port 99.
- the first liquid passage port 98 may be provided at the lower end of the inner side wall 94.
- the first liquid passage port 98 is a space between the second side surface 96 of the inner side wall 94 and the inner side surface 47 of the side wall 45.
- the first liquid passage port 98 may be provided in the XY plane in a circular manner along the inner side surface 47.
- the first liquid passage port 98 may be continuously provided in the XY plane along the inner side surface 47 in a circular manner.
- the second liquid passage port 99 may be provided at the position of the side wall 71 in the XY plane.
- the exhaust gas passage portion 49 and the recovery space 93 communicate with each other by the second liquid passage port 99.
- the second liquid passage port 99 may be provided in a circular shape at the position of the side wall 71 in the XY plane.
- the second liquid passage port 99 may be continuously provided in the XY plane at the position of the side wall 71 in a circular manner.
- the collection unit 25 collects the liquid 40 in the collection space 93.
- the liquid 40 and the liquid 44 traveling in the direction from one end 73 to the other end 75 along the side wall 45 easily pass through the window portion 29 in the direction from the inner side surface 47 to the outer side surface 48.
- the recovery unit 25 of this example collects the mist-like liquid 40 traveling in the direction from one end 73 to the other end 75 and the liquid 44 traveling along the side wall 45 in that direction by passing through the window portion 29. Collect in space 93.
- the recovery unit 25 of this example has an inner side wall 94 and a ceiling portion 43 on the other end 75 side of the window portion 29 in the traveling direction E2 of the exhaust gas 30.
- the liquid 40 and the liquid 44 traveling in the direction from one end 73 to the other end 75 along the side wall 45 pass the first liquid passage port 98 from the exhaust gas passage portion 49 to the recovery space 93. It is easy to proceed in the direction of.
- the mist-like liquid 40 traveling in the direction from one end 73 to the other end 75 and the liquid 44 traveling along the side wall 45 in that direction are passed through the first liquid passage port 98 and the second liquid. By passing through the passage port 99, the liquid is collected in the collection space 93.
- An eaves portion may be provided on the side wall 45 above the window portion 29 in the same manner as the eaves portion 21 shown in FIG.
- At least a part of the mist-like liquid 40 that has progressed from the inside of the reaction tower 10 to the inside of the exhaust gas lead-out unit 91 is discharged to the discharge space 66 at the discharge unit 61.
- the other part of the mist-like liquid 40 tends to travel through the exhaust gas passing portion 76 in the direction from the discharging portion 61 to the other end 75.
- At least a part of the other part of the mist-like liquid 40 is recovered by the recovery unit 25.
- the amount of the liquid 40 contained in the exhaust gas 30 discharged from the other end 75 of the exhaust gas lead-out unit 91 of this example is defined as M1.
- the amount of the liquid 40 contained in the exhaust gas 30 discharged from the other end 75 of the exhaust gas lead-out unit 91 shown in FIG. 3 is defined as M2. Since the exhaust gas lead-out unit 91 of this example further has a recovery unit 25 between the exhaust gas unit 61 and the other end 75 in the traveling direction E2 of the exhaust gas 30, the other part of the mist-like liquid 40 is a recovery unit. 25 makes it easier to collect. Therefore, the amount M1 of the liquid 40 tends to be smaller than the amount M2 of the liquid 40.
- the liquid 40 collected in the collection space 93 falls to the bottom 28 (see FIG. 18).
- the liquid 40 that has fallen to the bottom 28 (see FIG. 18) is recovered by the recovery pipe 41.
- the liquid 40 collected in the recovery pipe 41 may be discharged to the discharge pipe 51.
- the recovery unit 25 may have at least one of the window unit 29 and the inner side wall 94.
- the recovery unit 25 of this example has both a window unit 29 and an inner side wall 94.
- FIG. 20 is a diagram showing an example of mounting the exhaust gas treatment device 100 on the ship 300.
- FIG. 20 shows an example of the top view of the ship 300 (when viewed from above to below in the vertical direction).
- Vessel 300 includes a bow 310, a stern 320 and a side 330.
- the circumference of the ship 300 is the ocean.
- the traveling direction of the ship 300 (the direction from the stern 320 to the bow 310) is defined as the traveling direction Q.
- the direction opposite to the traveling direction Q is defined as the X-axis direction.
- Vessel 300 is equipped with two side 330s (side 330-1 and side 330-2).
- the side 330-1 and side 330-2 of this example extend in a direction parallel to the X-axis and face each other in the Y-axis direction.
- FIG. 20 also shows the exhaust gas treatment device 100 mounted on the ship 300.
- other than the reaction tower 10 in the exhaust gas treatment device 100 is omitted.
- the exhaust gas treatment device 100 is arranged so as to be sandwiched between starboard 330-1 and starboard 330-2 in the Y-axis direction.
- FIG. 21 is an enlarged view of the region including the exhaust gas treatment device 100 and the side 330 in FIG.
- the reaction tower 10, the discharge unit 61, and the discharge pipe 51 are provided on the ship 300.
- the exhaust gas treatment device 100 shown in FIG. 1 is shown together with side 330-1 and side 330-2.
- the discharge pipe 51 is provided in the traveling direction Q of the ship 300.
- the discharge pipe 51 provided in the traveling direction Q means a state in which the central axis of the discharging pipe 51 (the central axis of the liquid passing portion 54 of the discharging pipe 51) extends in a direction not orthogonal to the traveling direction Q. It may refer to a state in which the central axis extends in a direction parallel to the traveling direction Q.
- a straight line passing through the center position C1 of the reaction tower 10 and extending parallel to the traveling direction Q of the ship 300 is shown by a broken line.
- the position where the broken line intersects the side wall 39 of the outer tubular portion 63 is defined as the position C2.
- the discharge pipe 51 passes through the positions C1 and C2 (in the direction of the broken line) and is opposite to the traveling direction Q from the side wall 39 in the top view of the ship 300 (when viewed from above to below in the vertical direction). It may be stretched in the direction.
- the position of the central axis of the discharge pipe 51 may be the position of the broken line shown in FIG.
- Vessel 300 may tilt from the horizontal direction during the voyage depending on the state of the ocean and the like.
- the tilt in the Y-axis direction tends to be larger than the tilt in the X-axis direction. Therefore, since the discharge pipe 51 is provided in the traveling direction Q of the ship 300, the liquid 40 discharged to the discharge pipe 51 is less likely to flow back through the liquid passage portion 54 of the discharge pipe 51.
- FIG. 22 is a diagram showing another example of the exhaust gas treatment device 100 according to one embodiment of the present invention.
- the exhaust gas treatment device 100 of this example includes a reaction tower 10, a discharge unit 61, a discharge pipe 51, an exhaust gas lead-out unit 91, and a flue 110.
- the ranges of the reaction tower 10, the exhaust gas lead-out unit 91, and the flue 110 in the Z-axis direction are indicated by double-headed arrows.
- the mounting room 400 is a room in which the exhaust gas treatment device 100 is mounted.
- the loading chamber 400 may be provided in the ship 300 (see FIG. 21).
- the mounting chamber 400 may be located below the funnel top 130.
- the reaction tower 10, the exhaust gas lead-out unit 91, and the flue 110 may be provided in the mounting chamber 400.
- the flue 110 may penetrate the funnel top 130.
- the flue 110 is connected to the exhaust gas lead-out unit 91.
- the flue 110 has a side wall 111 and an exhaust gas passage 116.
- the exhaust gas passage portion 116 is a space surrounded by the flue 110.
- the discharge unit 61 is provided in the flue 110.
- the flue 110 may be provided with a discharge portion 61 of the embodiment shown in FIGS. 4 to 11 and 14 to 17.
- the flue 110 may be provided with a discharge section 61 and a recovery section 25 of the embodiments shown in FIGS. 18 and 19.
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Abstract
Description
特許文献1 特開平11-151426号公報
[化学式1]
SO2+Na++OH-→Na+HSO3 -
Claims (16)
- 排ガスが導入される排ガス導入口と、前記排ガスが排出される排ガス排出口と、前記排ガス導入口と前記排ガス排出口との間に設けられた液体噴霧部と、を有し、前記排ガスを処理する液体が供給される反応塔と、
前記液体噴霧部よりも上方に配置され、前記液体を排出する排出部と、
前記排出部に接続され、前記排出部により排出された前記液体を排出する排出管と、
を備え、
前記液体噴霧部において、前記液体は前記反応塔の内部に噴霧され、
前記排出部は、前記排ガスが通過する内側筒部と、前記内側筒部を囲うように設けられた外側筒部と、前記内側筒部と前記外側筒部とを接続する底部とを有し、前記内側筒部と前記外側筒部との間、且つ、前記底部よりも上方の排出空間に前記液体を排出し、
前記排出管は、前記外側筒部を貫通して前記排出空間に接続され、前記液体が通過する液体通過部を有し、
前記外側筒部を貫通する前記液体通過部の少なくとも一部は、前記底部の主要部の上面よりも下方に配置されている、
排ガス処理装置。 - 前記排出管は、前記外側筒部を貫通し、前記内側筒部に接している、請求項1に記載の排ガス処理装置。
- 前記外側筒部には、前記排出管が挿入される開口が設けられ、
前記底部には、前記開口と対応する第1の切欠きが設けられ、
前記排出管は、前記第1の切欠きに接続されている、
請求項1または2に記載の排ガス処理装置。 - 前記排出管は、前記排出空間に挿入される挿入部分を有し、
前記排出管には、前記挿入部分の上方の管壁に第2の切欠きが設けられている、
請求項3に記載の排ガス処理装置。 - 前記排出管の前記第2の切欠きが、前記底部の前記第1の切欠きに接続されている、
請求項4に記載の排ガス処理装置。 - 前記第2の切欠きの面積は、前記排出管の前記液体通過部の断面積以上である、請求項4または5に記載の排ガス処理装置。
- 前記排ガス排出口から前記排ガス導入口への方向に見た場合において、前記挿入部分の先端の曲率は、前記内側筒部の曲率と等しい、請求項4から6のいずれか一項に記載の排ガス処理装置。
- 前記排出管の断面と交差する方向から見た場合において、前記排出管の前記第2の切欠きの下方の管壁の上端は、前記底部の上面と同じ高さに配置されるか、または、前記底部の上面よりも下方に配置される、請求項4から7のいずれか一項に記載の排ガス処理装置。
- 前記底部は、前記第1の切欠きに接する端部を有し、
前記底部の上面から下面への方向における前記端部の厚さは、前記端部以外の前記底部の上面と下面との間の厚さよりも大きい、
請求項3から8のいずれか一項に記載の排ガス処理装置。 - 前記排出管の断面において、前記排出管の管壁の、前記底部に接する一部の曲率は、前記管壁の前記一部を除く他の一部の曲率よりも大きい、請求項1から9のいずれか一項に記載の排ガス処理装置。
- 前記反応塔、前記排出部および前記排出管は、船舶に設けられ、
前記排出管は、前記船舶の進行方向に設けられている、
請求項1から10のいずれか一項に記載の排ガス処理装置。 - 前記内側筒部は、前記内側筒部の側壁を貫通し、前記内側筒部の内側と前記排出空間とを接続する窓部を有し、
前記排出管は、前記窓部よりも下方に設けられている、
請求項1から11のいずれか一項に記載の排ガス処理装置。 - 前記内側筒部は、前記窓部よりも上方における前記内側筒部の側壁から、前記内側筒部の内部に延伸する庇部をさらに有する、請求項12に記載の排ガス処理装置。
- 前記排出部は、前記反応塔に設けられ、
前記排出部は、前記液体噴霧部と前記排ガス排出口との間に設けられている、
請求項1から13のいずれか一項に記載の排ガス処理装置。 - 前記排ガス排出口に接続された排ガス導出部をさらに備え、
前記排ガス導出部は、前記排ガスが通過する排ガス通過部を有し、
前記排ガス導出部は、前記排ガス排出口に接続される一端、および、前記一端とは逆側の他端を有し、
前記一端から前記他端への方向と直交する断面における前記排ガス通過部の面積は、前記排ガス導入口から前記排ガス排出口への方向と直交する断面における前記反応塔の内部の面積よりも小さく、
前記排出部は、前記排ガス導出部に設けられている、
請求項1から13のいずれか一項に記載の排ガス処理装置。 - 排ガスを処理する排ガス処理装置に接続される液体排出ユニットであって、
前記排ガス処理装置に接続される内側筒部と、前記内側筒部を囲うように設けられた外側筒部と、前記内側筒部と前記外側筒部とを接続する底部とを有し、前記内側筒部と前記外側筒部との間、且つ、前記底部よりも上方の排出空間に、前記内側筒部の内部の液体を排出する排出部と、
前記外側筒部を貫通し、前記液体が通過する液体通過部を有する排出管と、
を備え、
前記外側筒部を貫通する前記液体通過部の少なくとも一部は、前記底部の主要部の上面よりも下方に配置されている、
液体排出ユニット。
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CN202180004760.8A CN114206476A (zh) | 2020-03-06 | 2021-01-22 | 废气处理装置和液体排出单元 |
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