WO2016136280A1 - 排ガス処理装置 - Google Patents
排ガス処理装置 Download PDFInfo
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- WO2016136280A1 WO2016136280A1 PCT/JP2016/050155 JP2016050155W WO2016136280A1 WO 2016136280 A1 WO2016136280 A1 WO 2016136280A1 JP 2016050155 W JP2016050155 W JP 2016050155W WO 2016136280 A1 WO2016136280 A1 WO 2016136280A1
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- WIPO (PCT)
- Prior art keywords
- exhaust gas
- reaction tower
- branch pipes
- liquid
- height direction
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
-
- 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
-
- 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.
- Patent Document 1 Japanese Patent Application Publication No. 2014-117685
- an exhaust gas treatment apparatus for treating an exhaust gas including a reaction tower, a main pipe, and a plurality of branch pipes.
- the reaction tower may have an internal space extending in the height direction from the bottom side where exhaust gas is introduced to the top side where exhaust gas is discharged.
- the main pipe may extend in the height direction in the inner space of the reaction tower.
- the main pipe may carry the liquid.
- the plurality of branch pipes may be extended from the outer side surface of the main pipe toward the inner side surface of the reaction tower.
- the plurality of branch pipes may each be provided at different height positions, each having an injection unit that jets the liquid supplied from the main pipe.
- the jet area of the liquid jetted from the jet section of each branch adjacent in the height direction may have a partially overlapping area in the top view seen from the height direction.
- the largest angle of the angles formed by the adjacent branch pipes may be smaller than 60 degrees.
- the plurality of branch pipes may be provided at least around the trunk pipe.
- the cross-sectional area of the liquid flow path of the main pipe at the top of the reaction column where the exhaust gas is discharged may be smaller than the cross-sectional area of the liquid flow path of the main pipe at the bottom of the reaction column where the exhaust gas is introduced.
- the distance between the plurality of branch pipes in the height direction may be smaller than the distance at the bottom of the reaction tower where the exhaust gas flows, at the top of the reaction tower where the exhaust gas is discharged.
- the angle formed by the adjacent branch pipes in the height direction may be smaller at the top of the reaction tower where the exhaust gas is discharged than at the bottom of the reaction tower where the exhaust gas flows.
- the distance between the plurality of branch pipes in the height direction may be closer to the top of the reaction tower where the exhaust gas is discharged than the bottom of the reaction tower where the exhaust gas flows.
- the plurality of branch pipes may be provided in a spiral shape having the same rotational direction as the swirling direction of the exhaust gas flowing into the reaction tower.
- the plurality of branch pipes may be provided in a reverse spiral shape having a rotation direction opposite to the swirling direction of the exhaust gas flowing into the reaction tower.
- the plurality of branch pipes may be provided so as not to overlap in the top view.
- the branch pipe is provided with an injection unit, and the particle size of the liquid injected by the injection unit may be smaller at the top of the reaction tower where the exhaust gas is discharged than at the bottom of the reaction tower where the exhaust gas flows.
- the number of liquid particles injected per unit volume may be greater at the top of the reaction tower where the exhaust gas is discharged than at the bottom of the reaction tower where the exhaust gas flows.
- the exhaust gas treatment apparatus may be an exhaust gas treatment apparatus for ships.
- the ship has a plurality of layers in the height direction, the reaction towers are provided over two or more layers of the ship, and the cross-sectional area of the inner space of the reaction tower in a plane perpendicular to the height direction is It may differ depending on the ship's hierarchy.
- the extension length of the branch pipe provided in each layer may be different depending on the cross-sectional area of the inner space.
- FIG. 3 is a top view showing an example of connection of a reaction tower 10 and an exhaust gas introducing unit 20.
- FIG. 3 is a top view showing an example of connection of a reaction tower 10 and an exhaust gas introducing unit 20.
- FIG. 3 is a top view showing an example of connection of a reaction tower 10 and an exhaust gas introducing unit 20. It is a figure which shows the other example of arrangement
- FIG. 8A shows the analysis result of the liquid scattering amount to the exterior from the apparatus shown to FIG. 8A, and the liquid scattering amount to the exterior from the apparatus shown to FIG. 8B.
- FIG. 8B shows an example of the reaction tower 10 of the waste gas processing apparatus 100 installed in the ship.
- FIG. 1 is a view showing an example of the structure of an exhaust gas processing system 100 according to the embodiment.
- the exhaust gas processing device 100 removes harmful substances such as sulfur components contained in the exhaust gas discharged from an engine or the like of a ship.
- the exhaust gas processing apparatus 100 of the present example includes a reaction tower 10, an exhaust gas inlet 20, a main pipe 30, and a plurality of branch pipes 40.
- the reaction tower 10 has an internal space extending in the height direction.
- the height direction refers to the direction in which the exhaust gas is discharged from the bottom side of the reaction tower 10 where the exhaust gas is introduced to the upper side where the exhaust gas is discharged.
- the z-axis direction shown in FIG. 1 corresponds to the height direction.
- the z-axis direction is, for example, a direction perpendicular to the floor of the ship or parallel to the gravity direction.
- the exhaust gas introducing unit 20 introduces the exhaust gas into the internal space of the reaction tower 10.
- the exhaust gas introduction unit 20 of the present example allows the exhaust gas to flow into the reaction tower 10 in the vicinity of the bottom of the reaction tower 10.
- the exhaust gas introduction unit 20 allows the exhaust gas to flow into the reaction tower 10 so that the exhaust gas spirals along the side surface of the reaction tower 10.
- the reaction tower 10 of this example has an absorption unit 14 that sprays a liquid inside to absorb harmful substances of exhaust gas, and a discharge unit 12 that is not sprayed with a liquid inside.
- the discharge unit 12 discharges the exhaust gas that has passed through the absorption unit 14 to the outside.
- the cross-sectional area in the xy plane of the internal space of the discharge part 12 may be smaller than the area of the internal space of the absorption part 14.
- the xy plane is a plane having the z axis as a normal.
- the main pipe 30 is provided to extend in the height direction (that is, the z-axis direction) in the inner space of the reaction tower 10.
- the main pipe 30 has, for example, a flow path of liquid inside, and transports the liquid in the height direction.
- the main pipe 30 may be introduced into the inside from the side surface of the reaction tower 10 in the vicinity of the bottom surface of the absorbing portion 14 and may extend to the vicinity of the upper end of the absorbing portion 14.
- the liquid introduced to the trunk pipe 30 may be seawater, lake water, river water, alkalized treated water, or the like.
- the cross-sectional area of the flow path of the liquid in the trunk pipe 30 may differ according to the position of the height direction.
- the main pipe 30 may have a cross-sectional area of the liquid flow passage at the top thereof smaller than that of the liquid flow passage at the bottom thereof.
- the bottom refers to the portion of the reaction column 10 where exhaust gas is introduced
- the upper portion refers to the portion where the reaction column 10 discharges exhaust gas.
- the trunk pipe 30 in this example has a bottom portion 32, a middle portion 34 and a top portion 36 in order from the bottom side.
- the cross-sectional area of the liquid flow channel in the topmost upper portion 36 is smaller than the cross-sectional area of the liquid flow channel in the bottommost bottom portion 32.
- the cross-sectional area of the path of liquid in middle portion 34 is smaller than the cross-sectional area of the path of liquid in bottom portion 32.
- the cross-sectional area of the flow path of the liquid in the upper portion 36 is smaller than the cross-sectional area of the flow path of the liquid in the middle portion 34.
- the plurality of branch pipes 40 extend from the outer side surface of the main pipe 30 toward the inner side surface of the reaction tower 10.
- the branch pipe 40 is provided, for example, extending in the xy plane.
- Each branch 40 may extend to the vicinity of the inner side surface of the reaction tower 10.
- the radius of the reaction tower 10 may be about 0.3 m to several m, and the distance between the tip of the branch pipe 40 and the inner side surface of the reaction tower 10 may be about 10 cm to several tens cm.
- each branch pipe 40 has an injection unit 42 that receives the liquid from the flow path and injects the liquid into the internal space of the reaction tower 10.
- the spray unit 42 may spray the liquid in a mist form.
- each branch pipe 40 may have a plurality of injection parts 42.
- the injection unit 42 may inject the liquid in a direction perpendicular to the height direction of the reaction tower 10. In FIG. 1, an injection port may be provided on the surface of the injection unit 42 marked with a cross.
- the branch pipe 40 is opposed to the main pipe 30 with the main pipe 30 interposed therebetween.
- a set of opposing branch pipes 40 is referred to as one branch pipe 40.
- Each injection part 42 provided in the opposing branch pipe 40 injects a liquid in a reverse direction.
- at least two branch pipes of the plurality of branch pipes 40 are provided at different height positions.
- eight branch pipes 40-1, 40-2, ..., 40-8 are provided at different height positions.
- the jet area of the liquid jetted from the jet units 42 provided in the plurality of branch pipes 40 adjacent in the height direction partially overlaps in the top view seen from the height direction.
- the liquid injected from the injection unit 42 comes in contact with the exhaust gas passing through the inside of the reaction tower 10 and absorbs harmful substances contained in the exhaust gas.
- the liquid used for absorbing the harmful substance is accumulated at the bottom of the reaction tower 10 and discharged to the outside.
- FIG. 2 shows a top view of the plurality of branch pipes 40 viewed from the height direction.
- the branch pipes 40 are arranged such that the injection regions of the jets 42 provided in the adjacent branch pipes 40 in the height direction overlap each other.
- adjacent injection regions can be overlapped by reducing the angle formed by the adjacent branch pipes 40 in the height direction.
- the largest angle among angles formed by the branch pipes 40 adjacent in the height direction is smaller than 60 degrees.
- the angle ⁇ formed by each branch pipe 40 and the adjacent branch pipe 40 is 22.5 degrees.
- FIG. 3 is a view showing an example of the injection area 43 in each injection unit 42. As shown in FIG. In FIG. 3, the injection area 43 from the branch pipe 40-1 to the branch pipe 40-5 is shown enlarged, but the injection areas 43 of the other branch pipes 40 are the same. As described above, the spray areas 43 of the liquid jetted from the jet sections 42 provided in the plurality of branch pipes 40 adjacent in the height direction partially overlap in the top view seen from the height direction. Have. The boundary of the range of the injection region 43 is indicated by a solid line in FIG.
- the injection area 43-3 of the injection section 42-3 and the injection area 43-4 of the adjacent injection section 42-4 overlap at least in the area A and do not overlap completely.
- the gap between the injection regions 43 in the top view is reduced. Therefore, compared with the case where the injection areas 43 of the liquid adjacent in the height direction do not overlap, in this example, the gap between the injection areas 43 of the liquid adjacent in the height direction can be eliminated.
- the gap between the injection regions 43 disappears. Therefore, it is possible to prevent the exhaust gas from going straight in the height direction without turning, and to extend the time for the exhaust gas to pass through the absorbing portion 14.
- the flow rate of the exhaust gas to be discharged fluctuates according to the required load and the like. Even in that case, by eliminating the gap between the injection regions 43 of the liquid adjacent to each other in the height direction, the exhaust gas is prevented from going straight in the height direction without swirling, and the time for the exhaust gas to pass through the absorbing portion 14 It can be long.
- Each branch pipe 40 may be provided with an injection unit 42 disposed closer to the main pipe 30 and an injection unit 42 disposed closer to the side surface of the reaction tower 10.
- region 43 of injection part 42 comrades which adjoins in the height direction in the injection part 42 arrange
- positioned near the trunk pipe 30 it is preferable that the injection area
- each injection area 43 may partially overlap with two or more injection areas 43.
- the injection area 43-1 partially overlaps with at least three injection areas 43-2, 43-3, and 43-4.
- the injection area 43-1 partially overlaps the injection area of the injection portion 42 such as the branch pipe 40-8.
- Each injection area 43 may partially overlap with three or more injection areas 43, and may partially overlap with four or more injection areas 43.
- region 43 may overlap with the injection area
- region 43 of each injection part 42 may be an area
- the spray areas 43 of the liquid sprayed from the spray sections 42 provided in the plurality of branch pipes 40 adjacent in the height direction have partially overlapping areas in the top view as viewed in the height direction. . Therefore, compared with the case where the injection areas 43 of the liquid adjacent in the height direction do not overlap, in this example, the gap between the injection areas 43 of the liquid adjacent in the height direction can be eliminated. Therefore, the liquid can be prevented from rising together with the exhaust gas. For this reason, the liquid which absorbed the harmful substance can be prevented from being discharged outside with the exhaust gas. Therefore, it is not necessary to separately provide a structure for preventing the liquid from being discharged, or the structure can be made smaller, and the exhaust gas treatment apparatus 100 can be miniaturized.
- the branch pipes 40 can be evenly arranged around the trunk pipe 30 in the top view. Therefore, the branch pipe 40 itself prevents the exhaust gas from going straight in the height direction without swirling, and the time for the exhaust gas to pass through the absorbing portion 14 can be lengthened. Therefore, harmful substances can be efficiently removed from the exhaust gas.
- the branch pipe 40 itself does not inhibit the swirling of the exhaust gas, the liquid easily collides with the side surface of the reaction tower 10 along the flow of the exhaust gas. Since the branch pipes 40 are uniformly arranged around the trunk pipe 30 in the top view, it is possible to prevent the liquid from rising with the exhaust gas. For this reason, the liquid which absorbed the harmful substance can be prevented from being discharged outside with the exhaust gas. Therefore, it is not necessary to separately provide a structure for preventing the liquid from being discharged, or the structure can be made smaller, and the exhaust gas treatment apparatus 100 can be miniaturized.
- the largest angle among the angles formed by the adjacent branch pipes 40 may be smaller than 45 degrees.
- the component rotating in the xy plane can be easily made larger than the component in which the exhaust gas travels straight in the height direction.
- the angle may be less than 30 degrees or less than 20 degrees.
- the plurality of branch pipes 40 are provided so as to at least go around the trunk pipe 30.
- the plurality of branch pipes 40 may be arranged substantially equally around the trunk pipe 30 in the top view. As shown in FIGS. 1 and 2, when the branch pipe 40 extends from two opposing side surfaces of the trunk pipe 30, the branch pipe 40 extends from the two side surfaces if the branch pipe 40 makes a half turn around the trunk pipe 30. The branch pipe 40 will go around the trunk pipe 30.
- a plurality of branch pipes 40 may be provided spirally around the trunk pipe 30.
- the branch pipes 40 adjacent in the height direction are also adjacent in the top view.
- the rotation direction of the spiral may be the same as the swirling direction of the exhaust gas in the internal space of the reaction tower 10. Thereby, the swirling of the exhaust gas inside the reaction tower 10 can be promoted.
- the swirling direction of the exhaust gas is determined by the direction in which the exhaust gas introducing unit 20 causes the exhaust gas to flow into the reaction tower 10.
- the rotation direction of the spiral of the branch pipe 40 may be opposite to the swirling direction of the exhaust gas. Even in this case, the exhaust gas can be prevented from going straight in the height direction.
- the cross-sectional area of the liquid flow path inside several branch pipe 40 may differ according to the position in a height direction.
- the cross-sectional area of the liquid flow path of the branch pipe 40 at the top portion 36 on the top side is smaller than the cross-sectional area of the liquid flow path of the branch pipe 40 at the bottom portion 32 on the bottom side.
- the cross-sectional area of the liquid flow passage of the branch pipe 40 in the middle portion 34 is thinner than the cross-sectional area of the liquid flow passage of the branch pipe 40 in the bottom portion 32.
- the cross-sectional area of the liquid flow passage of the branch pipe 40 in the upper portion 36 is thinner than the cross-sectional area of the liquid flow passage of the branch pipe 40 in the middle portion 34.
- the distance between the plurality of branch pipes 40 in the height direction is narrower on the top side of the reaction tower 10 than on the bottom side of the reaction tower 10.
- the distance between the branch pipes 40 changes for each of a plurality of portions where the cross-sectional area of the liquid flow path of the main pipe 30 changes.
- the spacing of the branch pipes 40 in the middle portion 34 is smaller than the spacing of the branch pipes 40 in the bottom portion 32.
- the distance between the branch pipes 40 in the upper portion 36 is smaller than the distance between the branch pipes 40 in the middle portion 34.
- the swirling force of the exhaust gas is larger than that on the upper side. Therefore, by arranging the branch pipes 40 on the bottom side of the reaction tower 10 relatively sparsely, it is possible to prevent the exhaust gas from being disturbed.
- the particle diameter of the liquid injected by the injection unit 42 may be smaller on the upper side of the reaction tower 10 than on the bottom side of the reaction tower 10. However, the number of droplets of liquid injected per unit volume is larger at the top side of the reaction tower 10 than at the bottom side of the reaction tower 10.
- the concentration of harmful substances contained in a unit volume is low, it is better to arrange a large number of small particle diameter dispersions rather than to arrange the large particle diameter liquids sparsely. Can efficiently absorb harmful substances.
- the liquid absorbs harmful substances in the vicinity of the liquid.
- the concentration of the harmful substance is high, even if the liquid having a large particle size is sparsely disposed, the harmful substance in the vicinity of the liquid can be absorbed, and the harmful substance can be absorbed to near the saturation state of the liquid.
- the concentration of the harmful substance is low, even if the liquid having a large particle size is sparsely disposed, the harmful substance can not be absorbed until the saturation state of the liquid, and the liquid can not be used efficiently.
- the liquid with small particle size at high density even if the concentration of harmful substance is low, the harmful substance can be absorbed to near the saturation state of the liquid, and the liquid is used efficiently.
- region 43 shown in FIG. 3 may be an area
- the flow rate of the exhaust gas supplied to the reaction tower 10 may also be the rated flow rate.
- the median value of the upper limit and the lower limit of the operable range of the exhaust gas processing device 100 may be used as the rated flow rate.
- the operable range may be determined by the specifications of the exhaust gas processing device 100. Further, when the operation specification of the exhaust gas processing device 100 is not determined, the injection area 43 may be determined from the shape of the injection port of the injection unit 42.
- FIGS. 4A and 4B show an example of the injection unit 42.
- FIG. FIG. 4A shows the surface of the injection unit 42 on which the injection port 44 is provided
- FIG. 4B shows a cross section taken along the line BB in FIG. 4A.
- the injection unit 42 in this example has a plurality of injection ports 44 and a liquid supply unit 50.
- the liquid supply unit 50 is commonly provided to the plurality of jets 44 and supplies the liquid to the respective jets 44.
- the liquid supply unit 50 is supplied with the liquid from the branch pipe 40.
- each injection port 44 opens toward the inside of the reaction tower 10, and the other end is connected to the liquid supply unit 50.
- a straight line 48 connecting both ends has an inclination (for example, ⁇ 1, ⁇ 2 in FIG. 4B) with respect to the surface of the injection unit.
- An area surrounded by extending straight lines 48-1 and 48-2 of the two injection ports 44-1 and 44-2 provided at both ends in the xy plane may be the injection area 43 described in FIG.
- the straight line 48 may also be the inclination of the injection port 44 at the end 46 of the injection port 44.
- the straight line 48 may be defined by a tangent at the end 46 of the jet 44.
- 5A and 5B are top views showing connection examples of the reaction tower 10 and the exhaust gas introducing unit 20.
- the exhaust gas introducing unit 20 is provided linearly in the vicinity of the connection portion connected to the reaction tower 10.
- the outer side wall 22 of the exhaust gas introducing portion 20 extends in the tangential direction of the outer shape of the reaction tower 10, and the inner side wall 24 opposed to the outer side wall 22 extends in the direction intersecting the outer shape of the reaction tower 10.
- the exhaust gas introducing unit 20 has a curved shape in the vicinity of the connection portion connected to the reaction tower 10. In this case, the exhaust gas is easily swirled inside the reaction tower 10.
- the exhaust gas processing apparatus 100 can be miniaturized in the example of FIG. 5A, the swirling force of the exhaust gas flowing into the reaction tower 10 is reduced as compared with the example of FIG. 5B. Even in such a case, the swirling of the exhaust gas can be assisted by arranging the branch pipes 40 in a spiral as described above. Therefore, the downsizing of the exhaust gas processing device 100 and the favorable turning of the exhaust gas can be achieved at the same time.
- FIG. 6 is a view showing another arrangement example of the plurality of branch pipes 40. As shown in FIG. In FIG. 6, only the trunk pipe 30 and the plurality of branch pipes 40 are shown, and other configurations are omitted. Further, in FIG. 6, although the thickness and the distance in the height direction of the plurality of branch pipes 40 are made the same, as shown in FIG. 1, the branch pipes 40 on the upper side may be thinner, The distance between the upper branch pipes 40 may be smaller.
- the plurality of branch pipes 40 in this example are provided so as to go around the trunk pipe 30 once. That is, the branch pipes 40-1 to 40-8 make a half turn around the trunk pipe 30, and the branch pipes 40-9 to 40-16 make a half round around the trunk pipe 30.
- all the branch pipes 40 may be arranged so as not to overlap (that is, the angles with respect to the main pipe 30 do not overlap) in the top view.
- each of the branch pipes 40-9 to 40-16 in the second turn is disposed substantially at the center of the two adjacent branch pipes 40 in the branch pipes 40-1 to 40-8 in the first round. More specifically, when the angle between adjacent branch pipes 40 in branch pipes 40-1 to 40-8 is 22.5 degrees, branch pipes 40-9 to 40-16 are connected from branch pipe 40-1 It may be arranged by 11.25 degrees with respect to 40-8.
- the branch pipes 40-9 to 40-16 in the second turn may be arranged to overlap the branch pipes 40-1 to 40-8 in the top view in the top view.
- the distance between the two branch pipes 40 overlapping in the top view in the height direction is sufficiently large so as not to inhibit the swirl of the gas flow.
- the distance between the two branch pipes 40 overlapping in the top view in the height direction may be 0.5 m or more, and may be 2 m or more.
- three or more branch pipes 40 may be provided in the height direction between the two branch pipes 40 overlapping in the top view, and seven or more branch pipes 40 may be provided.
- FIG. 7 is a view showing another arrangement example of the plurality of branch pipes 40.
- the trunk pipe 30 and the plurality of branch pipes 40 are shown, and other configurations are omitted.
- the thickness and the distance in the height direction of the plurality of branch pipes 40 are made the same, as shown in FIG. 1, the branch pipes 40 on the upper side may be thinner, The distance between the upper branch pipes 40 may be smaller.
- the angle formed by the adjacent branch pipes 40 in the height direction is smaller at the upper side of the reaction tower 10 than at the bottom side of the reaction tower 10.
- the branch pipes 40-1 to 40-5 on the bottom side have an angle of 90 degrees between the adjacent branch pipes 40.
- the angle of the adjacent branch pipe 40 is 45 degrees.
- the angle of the adjacent branch pipe 40 is 22.5 degrees.
- branch pipes 40 As described above, by closely arranging the branch pipes 40 in the vicinity of the discharge portion 12, it is possible to further prevent the liquid from being discharged from the discharge portion 12. In addition, by arranging branch pipes 40 on the bottom side of the reaction tower 10 relatively sparsely, it is possible to prevent the exhaust gas from being disturbed.
- the angle of the adjacent branch pipe 40 may be changed each time the branch pipe 40 makes one turn around the trunk pipe 30. Thereby, the branch pipes 40 can be evenly arranged in the top view. Further, as shown in FIG. 1, the angle formed by the adjacent branch pipes 40 may be changed for each of a plurality of portions where the cross-sectional area of the liquid flow path of the main pipe 30 changes. Also in the example shown in FIG. 7, all the branch pipes 40 may be arranged so as not to overlap in the top view.
- FIG. 8A shows an example of swirling of the exhaust gas in the reaction tower 10 when the angle of the adjacent branch pipe 40 in the height direction is 90 degrees.
- FIG. 8B shows an example of swirling of the exhaust gas in the reaction tower 10 when the angle of the adjacent branch pipe 40 in the height direction is 22.5 degrees.
- all the conditions other than the angle of the branch pipe 40 such as the size of the internal space of the reaction tower 10, the number of branch pipes 40, and the inflow velocity of the exhaust gas, are all the same. did.
- the trace of the exhaust gas is shown by being approximated by one line from the viewpoint of viewability.
- FIG. 9 is a diagram showing analysis results of the amount of liquid scattering from the device shown in FIG. 8A to the outside and the amount of liquid scattering from the device shown in FIG. 8B to the outside.
- the amount of liquid splashed from the apparatus shown in FIG. 8A is 1.
- the amount of splashed liquid is reduced to about half. This is considered to be because the number of exhaust gas swirls is increased as shown in FIG. 8B.
- the probability that the liquid adheres to the inner wall of the reaction tower 10 along the flow of the exhaust gas increases.
- the swirling of the exhaust gas is maintained even on the upper side of the reaction tower 10 where the liquid is likely to scatter to the outside. For this reason, the amount of scattered liquid can be reduced.
- FIG. 10 is a view showing an example of the reaction tower 10 of the exhaust gas processing device 100 installed on a ship.
- the exhaust gas processing apparatus 100 of the present example processes exhaust gas from a power source of a ship.
- the ship has a plurality of tiers 112 in the height direction.
- the hierarchy 112 is separated by a floor plate 110.
- the reaction towers 10 are provided across two or more tiers 112 of the ship.
- the floor plate 110 is provided with an opening through which the reaction tower 10 passes.
- the cross-sectional area of the internal space of the reaction tower 10 in a plane perpendicular to the height direction may be different for each level 112 of the vessel.
- the external shape of the reaction tower 10 also changes according to the cross-sectional area.
- the cross-sectional area and the outer shape of the internal space of the reaction tower 10 are smaller as the upper hierarchy 112 is.
- the extension length in xy plane of the branch pipe 40 provided in each hierarchy 112 differs according to the cross-sectional area of the internal space of the reaction tower 10. That is, the extension length of the branch pipe 40 becomes shorter as the cross-sectional area of the inner space in the layer 112 in which the branch pipe 40 is disposed becomes smaller.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
[特許文献]
特許文献1 特開2014-117685号公報
Claims (15)
- 排ガスを処理する排ガス処理装置であって、
排ガスが導入される底部側から排ガスが排出される上部側への高さ方向に延伸する内部空間を有する反応塔と、
前記反応塔の前記内部空間において前記高さ方向に延伸し、液体を搬送する幹管と、
前記幹管の外側側面から前記反応塔の内側側面に向けて延伸して設けられ、前記幹管から供給される液体を噴射する噴射部を各々有し、異なる高さ位置に設けられた、複数の枝管と
を備え、
前記高さ方向に隣接する枝管の各々の前記噴射部から噴射される前記液体の噴射領域同士が、前記高さ方向から見た上面図において部分的に重なり合う領域を有する排ガス処理装置。 - 前記高さ方向から前記複数の枝管を見た上面図において、前記隣接する枝管が成す角度のうち、最も大きい角度は60度よりも小さい
請求項1に記載の排ガス処理装置。 - 前記上面図において、前記複数の枝管は前記幹管の周りを少なくとも一周するよう設けられている
請求項1または2に記載の排ガス処理装置。 - 前記排ガスが排出される前記反応塔の上部における、前記幹管の前記液体の流路の断面積は、前記排ガスが導入される前記反応塔の底部における前記幹管の前記液体の流路の断面積よりも小さい
請求項1から3のいずれか一項に記載の排ガス処理装置。 - 前記高さ方向における前記複数の枝管の間隔は、前記排ガスが排出される前記反応塔の上部における間隔が、前記排ガスが流入する前記反応塔の底部における間隔よりも狭い
請求項1から4のいずれか一項に記載の排ガス処理装置。 - 前記複数の枝管のうち、前記高さ方向において隣接する枝管同士が成す角度は、前記排ガスが排出される前記反応塔の上部の方が、前記排ガスが流入する前記反応塔の底部よりも小さい
請求項1から5のいずれか一項に記載の排ガス処理装置。 - 前記高さ方向における前記複数の枝管の間隔は、前記排ガスが排出される前記反応塔の上部で、前記排ガスが流入する前記反応塔の底部より密である
請求項1から6のいずれか一項に記載の排ガス処理装置。 - 前記複数の枝管は、前記反応塔に流入される排ガスの旋回方向と同じ回転方向を有する螺旋状に設けられる
請求項1から7のいずれか一項に記載の排ガス処理装置。 - 前記複数の枝管は、前記反応塔に流入される排ガスの旋回方向と逆向きの回転方向を有する逆向き螺旋状に設けられる
請求項1から7のいずれか一項に記載の排ガス処理装置。 - 前記複数の枝管は前記上面図において重ならないよう設けられている、
請求項8または9に記載の排ガス処理装置。 - 前記枝管には噴射部が設けられ、前記噴射部が噴射する液体の粒径は、前記排ガスが排出される前記反応塔の上部の方が、前記排ガスが流入する前記反応塔の底部よりも小さい
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。 - 単位体積当たりに噴射される液体の粒数が、前記排ガスが排出される前記反応塔の上部の方が、前記排ガスが流入する前記反応塔の底部よりも多い
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。 - 前記排ガス処理装置は、船舶用の排ガス処理装置である
請求項1から12のいずれか一項に記載の排ガス処理装置。 - 前記船舶は、高さ方向に複数の階層を有し、
前記反応塔は、前記船舶の2以上の階層に渡って設けられ、
前記高さ方向に対して垂直な平面における前記反応塔の前記内部空間の断面積は、前記船舶の階層に応じて異なる、
請求項13に記載の排ガス処理装置。 - 各々の前記階層に設けられる前記枝管の延伸長さは、前記内部空間の断面積に応じて異なる
請求項14に記載の排ガス処理装置。
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CN201680002135.9A CN106794417B (zh) | 2015-02-24 | 2016-01-05 | 废气处理装置 |
EP16755030.0A EP3165272B1 (en) | 2015-02-24 | 2016-01-05 | Exhaust gas processing apparatus |
KR1020177010420A KR101822570B1 (ko) | 2015-02-24 | 2016-01-05 | 배기가스 처리장치 |
DK16755030.0T DK3165272T3 (da) | 2015-02-24 | 2016-01-05 | Apparatur til behandling af udstødningsgas |
KR1020177002889A KR101768671B1 (ko) | 2015-02-24 | 2016-01-05 | 배기가스 처리장치 |
US15/417,244 US9957029B2 (en) | 2015-02-24 | 2017-01-27 | Exhaust gas processing apparatus |
US15/928,103 US10252786B2 (en) | 2015-02-24 | 2018-03-22 | Exhaust gas processing apparatus |
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CN108283828B (zh) * | 2018-03-14 | 2023-08-25 | 衢州市三诚化工有限公司 | 甘油加压稀释装置及其稀释方法 |
JP7105075B2 (ja) * | 2018-03-19 | 2022-07-22 | 三菱重工業株式会社 | 排ガス処理装置 |
EP3455473B1 (en) * | 2018-04-09 | 2020-08-05 | Wärtsilä Finland Oy | A water lead-through module and method of arranging a water lead-through to a hull of a marine vessel |
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CN109630768B (zh) * | 2018-12-29 | 2020-08-07 | 浙江德创环保科技股份有限公司 | 一种脱硫喷淋管道及其生产工艺 |
CN109966880B (zh) * | 2019-04-09 | 2022-02-11 | 江苏科技大学 | 一种倾斜自适应筛板海水脱硫塔 |
JP2021084043A (ja) * | 2019-11-25 | 2021-06-03 | 富士電機株式会社 | 排ガス処理装置 |
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US10252786B2 (en) | 2019-04-09 |
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US9957029B2 (en) | 2018-05-01 |
US20180208289A1 (en) | 2018-07-26 |
KR20170045753A (ko) | 2017-04-27 |
KR101768671B1 (ko) | 2017-08-17 |
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