WO2018174291A1 - 船舶用脱硫装置の排水システム - Google Patents
船舶用脱硫装置の排水システム Download PDFInfo
- Publication number
- WO2018174291A1 WO2018174291A1 PCT/JP2018/011925 JP2018011925W WO2018174291A1 WO 2018174291 A1 WO2018174291 A1 WO 2018174291A1 JP 2018011925 W JP2018011925 W JP 2018011925W WO 2018174291 A1 WO2018174291 A1 WO 2018174291A1
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- WIPO (PCT)
- Prior art keywords
- liquid
- drainage
- ship
- desulfurization
- drainage system
- Prior art date
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
-
- 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
- F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/04—Sulfur or sulfur oxides
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- This disclosure relates to a drainage system for a ship desulfurization apparatus.
- Patent Document 1 describes that a desulfurization device is mounted on a ship, and a water-saving deoxidizer is connected to a total seawater drain pipe suitable for deoxidation-treated discharge regulations.
- the structure shown in FIG. 11 can be considered as a drainage system of the desulfurization apparatus.
- the discharge port 012 for discharging the drainage of the desulfurization tower 08 to the outside of the ship is installed at a position (in the sea) lower than the water line L, and the liquid pool portion 018 in the desulfurization tower 08 is provided.
- the liquid is discharged from the discharge port 012 through a drain line 010 including a pipe 034 extending in the vertical direction.
- a valve 040 is installed in the middle of the pipe 034 so that the liquid reservoir 018 of the desulfurization tower 08 is not emptied, and the flow rate of the wastewater flowing from the liquid reservoir 018 into the sea is adjusted by the valve 040. be able to. Thereby, exhaust gas can be prevented from flowing into the drainage line. Further, it is possible to reliably prevent the exhaust gas from being released to the atmosphere.
- Patent Document 1 does not disclose any knowledge for suppressing piping damage in the drainage system of the ship desulfurization apparatus.
- At least one embodiment of the present invention has been made in view of the conventional problems as described above, and the object is to suppress piping damage to a drainage line that discharges desulfurization tower drainage to the outside of the ship. It is to provide a drainage system for a marine desulfurization apparatus.
- a drainage system for a ship desulfurization apparatus is a drainage system for a ship desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship, By spraying a cleaning liquid onto the exhaust gas introduced inside, a desulfurization tower that internally defines a gas-liquid contact portion for bringing the exhaust gas and the cleaning liquid into gas-liquid contact, and located above the waterline of the ship, And an inflow port where the liquid containing the cleaning liquid sprayed on the exhaust gas stored in the liquid reservoir flows as drainage, and the liquid that is located below the water line and flows in from the inflow port.
- a drainage line having a discharge port for discharging to the outside of the ship, and out of the liquid stored in the liquid pool part, the height of the weir part located above the waterline is exceeded.
- Serial liquid by overflowing said weir portion configured to flow into the inlet.
- the water is accumulated in the drainage line by utilizing the difference in height between the liquid surface position of the drainage accumulated in the drainage line and the height of the waterline and gravity. Drainage can be supplied to the outlet by the head pressure of the drainage.
- the liquid stored in the liquid pool part and the liquid stored in the drain line are space. The amount of liquid stored in the liquid reservoir does not directly affect the pressure of the liquid inside the drainage line. For this reason, the increase in the pressure concerning the piping which comprises a drainage line can be suppressed.
- the desulfurization tower further includes the liquid pool portion positioned below the gas-liquid contact portion. Define.
- the liquid can be stored in the liquid reservoir provided inside the desulfurization tower.
- the desulfurization tower is a connection space portion connected to the drainage line, and the dam portion is provided. And a partition member for partitioning the connection space portion and the gas-liquid contact portion, wherein a lower end of the partition member is positioned below an upper end of the dam portion.
- the liquid is stored up to a position higher than the lower end of the partition member in the liquid pool part. can do.
- it can suppress by the liquid and partition member which are stored in a liquid pool part that the gas in the gas-liquid contact part in a desulfurization tower flows in into a connection space part. Therefore, the gas in the gas-liquid contact part in the desulfurization tower can be prevented from flowing into the drainage line, and damage to the pipes constituting the drainage line can be suppressed.
- the desulfurization tower is formed with an air opening that communicates the connection space portion with the atmosphere.
- the liquid stored in the liquid pool part of the desulfurization tower is siphoned by providing an air opening and maintaining the pressure in the connection space at atmospheric pressure. Occurrence of a phenomenon that is sucked into the drainage line due to the effect can be avoided. Moreover, since the connection space part and the gas-liquid contact part are partitioned by the partition member described above, the gas in the gas-liquid contact part can be prevented from flowing out to the atmosphere from the atmosphere opening port.
- the desulfurization tower connects a pair of opposing wall surfaces of the desulfurization tower, and A cross member that crosses the liquid pool is provided.
- sloshing in a direction intersecting the extending direction of the transverse member in the liquid pool can be suppressed by the transverse member.
- the effect of suppressing sloshing by the cross member can be obtained regardless of the configuration of the drainage line.
- the transverse member in the drainage system for a ship desulfurization apparatus described in (5) above, extends along a direction in which the partition member extends.
- sloshing in a direction orthogonal to the extending direction of the partition member can be effectively suppressed by the cross member. Thereby, it can suppress that the gas flow which the gas of a gas-liquid contact part flows in into a connection space part through the downward direction of a partition member arises.
- the upper end of the transverse member is located above the upper end of the weir portion, and the lower end of the transverse member Is located below the upper end of the weir part, and a gap is provided between the lower end of the cross member and the bottom surface of the desulfurization tower.
- a direction in which the gas-liquid contact portion and the connection space portion are adjacent to each other is defined.
- One direction, the gas-liquid contact portion side in the first direction is defined as one side
- the connection space portion side in the first direction is defined as the other side
- along the first direction of the liquid pool portion L is a length from one side in the first direction in the liquid pool portion to the partition member
- L2 is a length from the partition member to the weir portion in the liquid pool portion
- the weir When the difference between the height of the part and the height of the lower end of the partition member is defined as D, the following formula (A) is satisfied.
- a typical ship assumes a roll of about 22.5 degrees as a roll of the ship (roll in the roll direction), and a pitch of about 15 degrees as a pitch of the ship (pitch in the pitch direction). Designed.
- the gas-liquid contact portion It is possible to suppress the generation of a gas flow in which the gas flows into the connection space through the lower part of the partition member.
- the marine desulfurization apparatus drainage system according to (1) further includes a relay tank that is located outside the desulfurization tower and that defines the liquid pool inside.
- the liquid can be stored in the liquid pool part of the relay tank provided outside the desulfurization tower.
- the layout of the desulfurization tower can be achieved by providing the liquid pool portion outside the desulfurization tower and by providing it in a relay tank whose layout can be changed more easily than the desulfurization tower. Can be improved.
- the relay tank is a connection space portion connected to the drainage line, and the dam portion is provided.
- a connection space to be formed is further defined inside.
- connection space connected to the drainage line is located outside the desulfurization tower and is provided in the relay tank whose layout can be changed more easily than the desulfurization tower.
- the relay tank is formed with an air opening that communicates the connection space portion with the atmosphere.
- the liquid stored in the liquid reservoir of the relay tank is siphoned by providing an air opening and maintaining the pressure in the connection space at atmospheric pressure. Occurrence of a phenomenon that is sucked into the drainage line due to the effect can be avoided.
- a liquid level position adjusting valve provided in the drainage line below the water line, and the liquid level position measured by the liquid level gauge, the opening of the liquid level position adjusting valve And a valve controller for controlling.
- the liquid level position adjustment valve is controlled so as to maintain the liquid level of the drainage within the drainage line measured by the level gauge within a certain range.
- the opening degree it is possible to suppress excess or deficiency of the head pressure of the drainage (power of drainage in the drainage line) due to load fluctuation in the drop pipe of the drainage line. Therefore, the waste water can be appropriately discharged from the discharge port while suppressing damage to the pipes constituting the drain line.
- the liquid containing the cleaning liquid discharged from the discharge port and the ship A nozzle is further provided for mixing with surrounding water.
- the difference in height between the liquid surface level of the drainage accumulated in the drainage line and the height position of the waterline and the gravity are utilized, and in the drainage line. Drainage can be supplied to the nozzle by the head pressure of the drainage. Thereby, the waste_water
- the marine desulfurization system drainage system according to any one of (1) to (14) further includes a fluid injection device for injecting fluid into the drainage line.
- hypochlorous acid or the like is injected into the drainage line by the fluid injection device, adhesion of marine products to the inside of the drainage line is prevented. Can do. Moreover, if alkaline liquid is inject
- a drainage system for a ship desulfurization apparatus capable of suppressing pipe damage in a drainage line for discharging drainage from a desulfurization tower to the outside of the ship.
- FIG. 2 is a schematic cross-sectional view for explaining some dimensions of the desulfurization apparatus 6 shown in FIG. 1. It is sectional drawing which shows schematic structure of the drainage system 7 (7B) of the desulfurization apparatus 6 which concerns on one Embodiment. It is sectional drawing which shows schematic structure of the drainage system 7 (7C) of the desulfurization apparatus 6 which concerns on one Embodiment. It is sectional drawing which shows schematic structure of the drainage system 7 (7D) of the desulfurization apparatus 6 which concerns on one Embodiment.
- FIG. 4 is a schematic cross-sectional view for explaining a configuration of a cross member 56.
- FIG. It is the schematic for demonstrating arrangement
- FIG. drawing which shows schematic structure of the drainage system 7 (7F) of the desulfurization apparatus 6 which concerns on one Embodiment.
- It is the schematic which showed another example of the planar shape of the relay tank 70 shown in FIG. 6 is a schematic cross-sectional view for explaining the configuration of a cross member 94.
- FIG. It is the schematic for demonstrating arrangement
- FIG. drawing which shows schematic structure of the drainage system 07 of the desulfurization apparatus which concerns on a comparison form.
- an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
- expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed.
- the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements.
- FIG. 1 is a schematic cross-sectional view of a ship 2 according to an embodiment. As shown in FIG. 1, the ship 2 includes a hull 4 and a desulfurization apparatus 6 (desulfurization apparatus for ships).
- the ship 2 includes a hull 4 and a desulfurization apparatus 6 (desulfurization apparatus for ships).
- the desulfurization device 6 is configured to desulfurize exhaust gas discharged from an exhaust gas generator (not shown) mounted on the hull 4, in order to discharge the wastewater generated by the desulfurization process in the desulfurization device 6 to the outside of the ship 2.
- the drainage system 7 (7A) is provided.
- the exhaust gas generator includes, for example, a main engine that uses C heavy oil such as a diesel engine, a gas turbine engine, or a steam turbine engine, or a mixed oil of low S fuel and C heavy oil, a plurality of power generation engines, and a marine boiler. Etc.
- the drainage system 7 of the desulfurization apparatus 6 includes a desulfurization tower 8 and a drainage line 10.
- the desulfurization tower 8 is installed on the deck 5 of the hull 4.
- the desulfurization tower 8 sprays a cleaning liquid (for example, seawater, an alkaline agent, etc.) on the exhaust gas introduced into the interior, thereby bringing the exhaust gas and the cleaning liquid into gas-liquid contact, and the gas-liquid contact unit 16.
- a cleaning liquid for example, seawater, an alkaline agent, etc.
- the alkali agent include NaOH, Ca (OH) 2 , NaHCO 3 , and Na 2 CO 3, and it is preferable to use an alkali reduced in volume to a high concentration.
- the drain line 10 includes an inlet 20 and an outlet 12.
- the inflow port 20 is located above the water line L of the ship 2 and is configured such that the liquid stored in the liquid pool portion 18 flows as the drainage water W1.
- the liquid level (liquid level height) of the liquid reservoir 18 is higher than the height of the weir part 19 (the upper end part of a drop pipe 34 to be described later in the drain line 10) located above the water line L.
- the liquid stored in the liquid pool portion 18 overflows the weir portion 19 and flows into the inflow port 20 as the waste water W1.
- the discharge port 12 is located below the water line L, and is configured to discharge the waste water W1 flowing in from the inflow port 20 to the outside of the ship 2. Further, the drainage line 10 extends from the liquid level position P1 of the drainage W1 inside the drainage line 10 to the discharge port 12 in a state where the drainage W1 is accumulated up to the liquid level P1 above the draft line L inside the drainage line 10. Section S (pipe) that is not open to the atmosphere is provided. That is, the drainage line 10 is not connected to the facility open to the atmosphere such as a drainage treatment tank in the section S.
- the drain line 10 extends along the vertical direction and has a drop pipe 34 having a drop between the upper end portion and the lower end portion, and the horizontal direction from the lower end portion of the drop pipe 34.
- An extending horizontal tube 36 An extending horizontal tube 36.
- the inlet 20 described above is provided at the upper end of the drop pipe 34, and the outlet 12 described above is provided at the end of the horizontal pipe 36 (side surface of the hull 4).
- the head pressure of the drainage water W1 in the drainage line 10 using the difference in height and gravity between the liquid surface position P1 of the drainage water W1 accumulated in the drainage line 10 and the height position P0 of the waterline L.
- the waste water W1 can be supplied to the discharge port 12.
- the drainage W1 flows into the inlet 20 from the liquid reservoir 18 by the overflow method, so that the liquid stored in the liquid reservoir 18 and the drainage line 10 are accumulated.
- the amount of the liquid stored in the liquid pool portion 18 does not directly affect the pressure of the liquid inside the drainage line 10. For this reason, the increase in the pressure concerning the piping which comprises the drainage line 10 can be suppressed.
- the drain line 10 is not provided with a valve above the water line L, so the problem in the configuration shown in FIG. 11 described above (due to the negative pressure generated on the downstream side of the valve, Pipe damage and internal fluid decompression boiling) do not occur, and pipe damage to the drainage line 10 can be suppressed. Therefore, it is possible to reduce the design strength of the piping constituting the drainage line 10, reduce the piping cost, and reduce the weight of the piping.
- the desulfurization tower 8 is configured to internally define a connection space portion 22 connected to the drainage line 10.
- a partition member 24 that partitions the contact portion 16 is included.
- the dam portion 19 is provided in the connection space portion 22, and the lower end 26 of the partition member 24 is positioned below the upper end 28 of the dam portion 19.
- the lower end 26 of the partition member 24 is positioned below the upper end 28 of the dam portion 19, so that the liquid can be stored up to a position higher than the lower end 26 of the partition member 24 in the liquid pool portion 18.
- the desulfurization tower 8 is formed with an atmosphere opening 30 that connects the connection space portion 22 and the atmosphere.
- the atmosphere opening 30 is formed in the ceiling portion 32 that defines the connection space portion 22 in the desulfurization tower 8.
- connection space part 22 and the gas-liquid contact part 16 are partitioned by the partition member 24 described above, it is possible to prevent the gas in the gas-liquid contact part 16 from flowing out from the atmosphere opening port 30 to the atmosphere. it can.
- FIG. 2 is a schematic cross-sectional view for explaining some dimensions of the desulfurization apparatus shown in FIG.
- the direction in which the gas-liquid contact portion 16 and the connection space portion 22 are adjacent is the first direction
- the gas-liquid contact portion 16 side in the first direction is one side
- the connection space portion in the first direction is defined as the other side.
- the length of the liquid reservoir 18 along the first direction is L
- the length from one side of the liquid reservoir 18 in the first direction to the partition member 24 is L1
- the length of the reservoir 18 from the partition member 24 to the weir is L2
- the difference between the height from the bottom surface of the liquid pool portion 18 to the upper end 28 of the dam portion 19 and the height from the bottom surface of the liquid pool portion 18 to the lower end 26 of the partition member 24 is D.
- the partition member 24 extends along a direction orthogonal to the first direction.
- a typical ship assumes a roll of about 22.5 degrees as a roll of the ship (roll in the roll direction), and a pitch of about 15 degrees as a pitch of the ship (swing in the pitch direction). Designed. For this reason, by satisfy
- FIG. 3 is a cross-sectional view illustrating a schematic configuration of the drainage system 7 (7B) of the desulfurization apparatus 6 according to an embodiment.
- FIG. 4 is a cross-sectional view illustrating a schematic configuration of the drainage system 7 (7C) of the desulfurization apparatus 6 according to an embodiment.
- FIG. 5 is a cross-sectional view illustrating a schematic configuration of the drainage system 7 (7D) of the desulfurization apparatus 6 according to an embodiment.
- FIG. 6 is a cross-sectional view illustrating a schematic configuration of the drainage system 7 (7E) of the desulfurization apparatus 6 according to an embodiment.
- the drainage system 7 (7B to 7E) of the desulfurization apparatus 6 described below has the same basic configuration as the drainage system 7 (7A) described above, but has a different additional configuration.
- the same components as the components of the drainage system 7 (7A) are denoted by the same reference numerals, description thereof is omitted, and the characteristic configuration of each modified example will be mainly described.
- the drainage system 7 (7B) includes a pressure gauge 38 as a liquid level gauge for measuring the liquid level position P1 of the drainage W1 inside the drainage line 10.
- a controller 42 for controlling the opening of the liquid level position adjusting valve 40 based on the liquid level position adjusting valve 40 provided in the drainage line 10 below the draft line L and the liquid level position P1 measured by the pressure gauge 38.
- the drainage line is controlled by controlling the opening of the liquid level position adjustment valve 40 so as to maintain the liquid level position P1 of the drainage W1 in the drainage line 10 measured by the pressure gauge 38 within a certain range.
- the excess or deficiency of the water head pressure of the drainage W1 (the power of drainage in the drainage line 10) due to the load fluctuation in the ten drop pipes 34 can be suppressed. Therefore, the waste water W1 can be appropriately discharged from the discharge port 12 while suppressing damage to the piping constituting the drain line 10.
- the drainage system 7 (7C) may include a liquid containing cleaning liquid discharged from the outlet 12 and water W0 around the ship 2 (eg, seawater, lake water or river water). Etc.) are provided.
- a known nozzle such as an ejector nozzle, a multi-hole nozzle, an inward annular nozzle, or a swivel nozzle can be used.
- Waste water W1 can be supplied to the nozzle 44. Thereby, the waste water W1 discharged from the nozzle 44 and the water W0 around the ship 2 can be effectively mixed.
- the drainage system 7 (7 ⁇ / b> D) includes an overflow pipe 48 (emergency pipe) that connects the position P ⁇ b> 2 above the draft line in the drainage line 10 and the outside of the ship 2.
- a drainage mechanism In the illustrated form, one end of the overflow pipe 48 is connected to the drop pipe 34 at the position P 2, and the other end of the overflow pipe 48 is at a position below the water line L on the side surface of the ship 2. Connect to the outside.
- the drainage system 7 (7E) includes a fluid injection device 50 for injecting the fluid W2 into the drainage line 10.
- the fluid injection device 50 includes a tank 52 that stores the fluid W2 and a pump 54 that supplies the fluid W2 in the tank 52 to the drop pipe 34 of the drainage line 10.
- the fluid W2 to be injected by the fluid injection device 50 may be a liquid for preventing adhesion of marine products, such as hypochlorous acid, and increases the pH of the drainage W1 in the drainage line 10.
- An alkaline liquid pH adjusting agent
- hypochlorous acid or the like is injected into the drainage line 10 by the fluid injection device 50, adhesion of marine products to the inside of the drainage line 10 can be prevented.
- alkaline liquid is inject
- the pH can be raised upstream from the drainage port to the planned pH.
- the nozzle diameter can be increased and the number of nozzles 44 can be reduced.
- the alkaline liquid it is preferable to use a mixed liquid of alkali and water in which, for example, NaOH, Ca (OH) 2 , NaHCO 3 , Na 2 CO 3 and the like are reduced to a high concentration.
- FIG. 8 is a cross-sectional view showing a schematic configuration of the drainage system 7 (7F) of the desulfurization apparatus 6 according to an embodiment.
- FIG. 9A is a schematic diagram illustrating an example of a planar shape of the relay tank 70 illustrated in FIG. 8.
- FIG. 9B is a schematic diagram illustrating another example of the planar shape of the relay tank 70 illustrated in FIG. 8.
- the drainage system 7 (7 ⁇ / b> F) of the desulfurization apparatus 6 includes a relay tank 70, a desulfurization tower 71, and a drainage line 72.
- the desulfurization tower 71 is installed on the deck 5 of the hull 4.
- the desulfurization tower 71 sprays a cleaning liquid (for example, seawater, an alkaline agent) on the exhaust gas introduced into the interior, thereby defining the above-described gas-liquid contact portion 16 that makes the exhaust gas and the cleaning liquid contact each other in a gas-liquid manner. It is configured.
- the relay tank 70 is located outside the desulfurization tower 71 and is configured to define a liquid pool portion 78 in which a liquid containing a cleaning liquid that has absorbed the sulfur content in the exhaust gas is stored in the gas-liquid contact portion 16. ing.
- the liquid containing the cleaning liquid is stored in the liquid pool portion 18 defined in the desulfurization tower 8
- the drainage system 7F the liquid is contained in the relay tank 70.
- a liquid containing a cleaning liquid is stored in the defined liquid pool portion 78.
- the relay tank 70 is provided inside the hull 4.
- the drainage system 7 (7F) has one end 75 connected to a position below the gas-liquid contact portion 16 of the desulfurization tower 71 and the other end 76 located below the one end 75 to the relay tank 70.
- the relay pipe 74 is provided.
- the relay pipe 74 is configured such that the liquid containing the cleaning liquid that has absorbed the sulfur content in the exhaust gas at the gas-liquid contact portion 16 flows from the desulfurization tower 71 to the liquid pool portion 78 of the relay tank 70.
- the drain line 72 includes an inlet 80 and an outlet 82.
- the inflow port 80 is configured to be positioned above the water line L of the ship 2, and the liquid stored in the liquid pool portion 78 flows in as the waste water W ⁇ b> 1.
- a dam portion 79 is provided in the liquid pool portion 78, and the upper end 86 of the dam portion 79 is located above the water line L.
- the liquid level (liquid level height) of the liquid pool part 78 rises and exceeds the upper end 86 of the weir part 79, the liquid stored in the liquid pool part 78 overflows the weir part 79, and drains. It is configured to flow into the inflow port 80 as W1.
- the discharge port 82 is located below the water line L and is configured to discharge the waste water W1 flowing in from the inflow port 80 to the outside of the ship 2. Further, the drain line 72 extends from the liquid level position P1 of the drainage water W1 inside the drainage line 72 to the discharge port 82 in a state where the drainage water W1 has accumulated up to the liquid level position P1 above the draft line L inside the drainage line 72. Section S (pipe) that is not open to the atmosphere is provided. That is, the drainage line 72 is not connected to the facility opened to the atmosphere such as a drainage treatment tank in the section S.
- the drain line 72 extends in the vertical direction and has the above-described drop pipe 34 having a drop between the upper end portion and the lower end portion, and the horizontal direction from the lower end portion of the drop pipe 34.
- the second horizontal pipe 37 extending along the horizontal direction from the upper end portion of the drop pipe 34 and having a leading end connected to the relay tank 70.
- the second horizontal pipe 37 is connected to the side surface of the relay tank 70 below the upper end 86 of the weir part 79.
- the inlet 80 is provided at the tip of the second horizontal pipe 37 (side surface of the relay tank 70), and the outlet 82 is provided at the end of the horizontal pipe 36 (side surface of the hull 4).
- the above-described drop pipe 34 may have an upper end connected to the bottom surface of the relay tank 70. That is, the drain line 72 includes the above-described drop pipe 34 and the horizontal pipe 36.
- the above-described inflow port 80 is provided at the upper end of the drop pipe 34 (the bottom surface of the relay tank 70), and the above-described discharge port 82 is provided at the end of the horizontal pipe 36 (the side surface of the hull 4).
- the liquid can be stored in the liquid pool portion 78 of the relay tank 70 provided outside the desulfurization tower 71. Further, when the liquid pool portion 78 is provided outside the desulfurization tower 71 and provided in the relay tank 70 whose layout is easier to change than the desulfurization tower 71, the liquid pool portion 18 is provided inside the desulfurization tower 8 (see FIG. Compared with 1 to 7B), the layout of the desulfurization tower 71 can be improved.
- the relay tank 70 is provided inside the hull 4, the space on the deck 5 of the hull 4 can be used effectively. Moreover, since the relay tank 70 can be arrange
- the difference in height between the liquid surface position P1 of the drainage water W1 accumulated in the drainage line 72 and the height position P0 of the waterline L and the gravity are used similarly to the drainage system 7A described above.
- the drainage water W1 can be supplied to the discharge port 82 by the head pressure of the drainage water W1 in the drainage line 72.
- the drainage W1 flows into the inlet 80 from the liquid pool portion 78 by the overflow method, so that the liquid stored in the liquid pool portion 78 and the drainage line 72 are collected.
- the amount of the liquid stored in the liquid pool portion 78 does not directly affect the pressure of the liquid inside the drainage line 72. For this reason, it is possible to suppress an increase in pressure applied to the piping that constitutes the drainage line 72.
- the drain line 72 is not provided with a valve above the water line L, so the problem in the configuration shown in FIG. 11 described above (due to the negative pressure generated on the downstream side of the valve, Pipe damage or internal fluid decompression boiling) does not occur, and pipe damage to the drain line 72 can be suppressed. Therefore, it is possible to reduce the design strength of the piping that constitutes the drainage line 72, reduce the piping cost, and reduce the weight of the piping.
- the relay tank 70 is configured to internally define a connection space 84 connected to the drainage line 72. Further, the dam portion 79 is provided in the connection space portion 84.
- connection space portion 84 connected to the drain line 72 is located outside the desulfurization tower 71 and provided in the relay tank 70 whose layout is easier to change than the desulfurization tower 71, The layout of the drainage line 72 can be improved.
- the other end 76 of the relay pipe 74 is located below the upper end 86 of the weir part 79.
- the other end 76 of the relay pipe 74 is located below the upper end 86 of the dam part 79, so that the liquid is stored up to a position higher than the other end 76 of the relay pipe 74 in the liquid pool part 78. be able to.
- the gas in the gas-liquid contact part 16 in the desulfurization tower 71 from flowing into the connection space part 84 by the liquid stored in the liquid pool part 78. Therefore, it is possible to suppress the gas in the gas-liquid contact portion 16 in the desulfurization tower 71 from flowing into the drainage line 72, and to suppress damage to the pipes constituting the drainage line 72.
- the relay tank 70 is formed with an atmosphere opening 88 that communicates the connection space portion 84 with the atmosphere.
- the air opening 88 is formed in the ceiling 90 that defines the connection space 84 in the relay tank 70.
- an atmosphere release pipe 92 having one end connected to the atmosphere release port 88 and the other end positioned outside the hull 4 is provided.
- the air stored in the liquid pool portion 78 of the relay tank 70 is sucked into the drain line 72 by the siphon effect by providing the atmosphere opening port 88 and maintaining the pressure of the connection space portion 84 at atmospheric pressure. Can be avoided. Further, since the connection space portion 84 and the gas-liquid contact portion 16 are partitioned by the liquid stored in the liquid pool portion 78, the gas in the gas-liquid contact portion 16 flows out from the atmosphere opening port 88 to the atmosphere. Can be prevented.
- the plane shape of the relay tank 70 is formed in a rectangular shape. In some other embodiments, as shown in FIG. 9B, the plane shape of the relay tank 70 is formed in a circular shape. In some other embodiments, the plane shape of the relay tank 70 is an elliptical shape or a rounded rectangular shape. That is, the plan shape of the relay tank 70 at the time of design can be a shape corresponding to the internal layout of the hull 4.
- the drainage system 7F of the desulfurization apparatus 6 described above includes an additional configuration included in the drainage systems 7B to 7E described above. According to such a configuration, the drainage system 7F of the desulfurization device 6 exhibits the above-described operational effects exhibited by the additional configuration of the above-described drainage systems 7B to 7E.
- the present invention is not limited to the above-described embodiments, and includes forms obtained by modifying the above-described embodiments and forms obtained by appropriately combining these forms.
- the pipes (the drop pipe 34, the horizontal pipe 36, and the second horizontal pipe 37) and the relay pipes of the drain lines 10 and 72 are used.
- an acid-resistant material such as FRP (fiber reinforced plastic) or Hastelloy may be used, and pipes of the drain lines 10 and 72 (fall pipe 34, horizontal pipe 36 and second horizontal pipe 37).
- the inner peripheral surface of the relay pipe 74 may be subjected to acid resistance treatment such as rubber lining.
- FIG. 7A is a schematic cross-sectional view for explaining the configuration of the cross member 56.
- FIG. 7B is a schematic diagram for explaining the arrangement of the crossing members 56 in plan view.
- the desulfurization tower 8 connects a pair of opposing wall surfaces 58, 60 of the desulfurization tower 8 and traverses the pool 18.
- a cross member 56 is provided.
- the sloshing in the direction intersecting with the extending direction of the cross member 56 in the liquid pool portion 18 can be suppressed by the cross member 56.
- the effect of suppressing sloshing by the cross member 56 can be obtained regardless of the configuration of the drainage line 10.
- the cross member 56 extends along the direction in which the partition member 24 extends.
- the cross member 56 has a flat plate shape and the upper end 62 of the cross member 56 is above the upper end 28 of the weir 19.
- the lower end 64 of the cross member 56 is positioned below the upper end 28 of the dam portion 19.
- a gap 68 is provided between the lower end 64 of the cross member 56 and the bottom surface 66 of the desulfurization tower 8.
- FIG. 10A is a schematic cross-sectional view for explaining the configuration of the cross member 94.
- FIG. 10B is a schematic diagram for explaining the arrangement of the transverse members 94 in plan view.
- the relay tank 70 is a transverse member 94 that traverses the liquid pool 78, with both ends connected to the wall of the relay tank 70.
- a cross member 94 is provided.
- the sloshing in the direction intersecting the extending direction of the cross member 94 in the liquid pool portion 78 can be suppressed by the cross member 94.
- the effect of suppressing sloshing by the cross member 94 can be obtained regardless of the configuration of the drainage line 72.
- the cross member 94 extends along the direction in which the dam portion 79 extends (the direction perpendicular to the second direction).
- the cross member 94 has a flat plate shape and the upper end 95 of the cross member 94 is above the upper end 86 of the weir 79.
- the lower end 96 of the cross member 94 is positioned below the upper end 86 of the dam portion 79. Further, a gap 99 is provided between the lower end 96 of the cross member 94 and the bottom surface 98 of the relay tank 70.
- sloshing in the direction intersecting the extending direction of the transverse member 94 in the liquid pool portion 78 is effected by the transverse member 94 while equalizing the liquid surface heights on both sides of the transverse member 94 in the liquid pool portion 78. Can be suppressed.
- the pressure gauge 38 as a liquid level gauge for measuring the liquid level position P1 of the waste_water
- Desulfurization device 7 (7A to 7F) Drainage system 8, 71 Desulfurization tower 10, 72 Drain line 12, 82 Discharge port 16 Gas-liquid contact part 18, 78 Pool part 19, 79 Weir part 20, 80 Inlet 22, 84 Connection space 24 Partition member 26, 64, 96 Lower end 28, 62, 86, 95 Upper end 30, 88 Air opening 32, 90 Ceiling 34 Drop pipe 36 Horizontal pipe 37 Second horizontal pipe 38 Pressure Total 40 Liquid level position adjustment valve 42 Valve controller 44 Nozzle 48 Overflow pipe 50 Fluid injection device 52 Tank 54 Pump 56, 94 Cross member 58, 60 Wall surface 66, 98 Bottom face 68, 99 Clearance 70 Relay tank 74 Relay pipe 75 One end 76 The other end 92
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Abstract
Description
D>max{L1、L2}×tanθ・・・式(A)
(ただし、上記式(A)において、第1方向が船舶の幅方向に沿う場合はθ=22.5度とし、第1方向が船舶の前後方向に沿う場合はθ=15度とする。)
例えば、「ある方向に」、「ある方向に沿って」、「平行」、「直交」、「中心」、「同心」或いは「同軸」等の相対的或いは絶対的な配置を表す表現は、厳密にそのような配置を表すのみならず、公差、若しくは、同じ機能が得られる程度の角度や距離をもって相対的に変位している状態も表すものとする。
例えば、「同一」、「等しい」及び「均質」等の物事が等しい状態であることを表す表現は、厳密に等しい状態を表すのみならず、公差、若しくは、同じ機能が得られる程度の差が存在している状態も表すものとする。
例えば、四角形状や円筒形状等の形状を表す表現は、幾何学的に厳密な意味での四角形状や円筒形状等の形状を表すのみならず、同じ効果が得られる範囲で、凹凸部や面取り部等を含む形状も表すものとする。
一方、一の構成要素を「備える」、「具える」、「具備する」、「含む」、又は、「有する」という表現は、他の構成要素の存在を除外する排他的な表現ではない。
図1に示すように、船舶2は、船体4及び脱硫装置6(船舶用脱硫装置)を備える。
脱硫塔8は、船体4の甲板5上に設置されている。脱硫塔8は、内部に導入される排ガスに洗浄液(例えば海水、アルカリ剤等)を噴霧することで、排ガスと洗浄液とを気液接触させる気液接触部16、及び、気液接触部16よりも下方に位置し、気液接触部16で排ガス中の硫黄分を吸収した洗浄液を含む液体が貯留される液だまり部18、を内部に画定するように構成されている。アルカリ剤としては、例えばNaOH、Ca(OH)2、NaHCO3、Na2CO3などが挙げられ、高濃度に減容化されたアルカリを用いることが好ましい。
流入口20は、船舶2の喫水線Lよりも上方に位置し、且つ、液だまり部18に貯留される液体が排水W1として流入するように構成されている。図示する形態では、液だまり部18の液位(液面高さ)が、喫水線Lよりも上方に位置する堰部19(排水ライン10における後述する落差管34の上端部)の高さを上回ったとき、液だまり部18に貯留される液体が堰部19をオーバーフローすることで、排水W1として流入口20に流入するように構成されている。
まず、図2に示すように、気液接触部16と接続空間部22とが隣接する方向を第1方向、第1方向における気液接触部16側を一方側、第1方向における接続空間部22側を他方側、と定義する。また、液だまり部18の第1方向に沿った長さをL、液だまり部18における第1方向の一方側から仕切部材24までの長さをL1、液だまり部18における仕切部材24から堰部19までの長さをL2、液だまり部18の底面から堰部19の上端28までの高さと、液だまり部18の底面から仕切部材24の下端26までの高さとの差をD、と定義する。なお、図2に示される実施形態では、仕切部材24は、第1方向と直交する方向に沿って延在する。
D>max{L1、L2}×tanθ 式(A)
(ただし、上記式(A)において、第1方向が船舶2の幅方向に沿う場合はθ=22.5度とし、第1方向が船舶2の前後方向に沿う場合はθ=15度とする。)
流入口80は、例えば図8に示すように、船舶2の喫水線Lよりも上方に位置し、且つ、液だまり部78に貯留される液体が排水W1として流入するように構成されている。図示する形態では、液だまり部78に堰部79が設けられており、堰部79の上端86は喫水線Lよりも上方に位置している。そして、液だまり部78の液位(液面高さ)が上昇し、堰部79の上端86を超えたとき、液だまり部78に貯留される液体が堰部79をオーバーフローすることで、排水W1として流入口80に流入するように構成されている。
4 船体
5 甲板
6 脱硫装置
7(7A~7F) 排水システム
8,71 脱硫塔
10,72 排水ライン
12,82 排出口
16 気液接触部
18,78 液だまり部
19,79 堰部
20,80 流入口
22,84 接続空間部
24 仕切部材
26,64,96 下端
28,62,86,95 上端
30,88 大気開放口
32,90 天井部
34 落差管
36 水平管
37 第2水平管
38 圧力計
40 液面位置調整バルブ
42 バルブコントローラ
44 ノズル
48 溢流管
50 流体注入装置
52 タンク
54 ポンプ
56,94 横断部材
58,60 壁面
66,98 底面
68,99 隙間
70 中継タンク
74 中継管
75 一端
76 他端
92 大気開放管
Claims (15)
- 船舶に搭載される排ガス発生装置から排出される排ガスを脱硫するための船舶用脱硫装置の排水システムであって、
内部に導入される前記排ガスに洗浄液を噴霧することで、前記排ガスと前記洗浄液とを気液接触させる気液接触部を内部に画定する脱硫塔と、
前記船舶の喫水線よりも上方に位置し、且つ、液だまり部に貯留される前記排ガスに噴霧された前記洗浄液を含む液体が排水として流入する流入口、及び、前記喫水線よりも下方に位置し、且つ、前記流入口から流入した前記液体を前記船舶の外部に排出する排出口、を有する排水ラインと、を備え、
前記液だまり部に貯留される前記液体の内、前記喫水線よりも上方に位置する堰部の高さを上回った前記液体が、前記堰部をオーバーフローすることで、前記流入口に流入するように構成される、船舶用脱硫装置の排水システム。 - 前記脱硫塔は、前記気液接触部よりも下方に位置する前記液だまり部をさらに内部に画定する、請求項1に記載の船舶用脱硫装置の排水システム。
- 前記脱硫塔は、前記排水ラインに接続される接続空間部であって、前記堰部が設けられる接続空間部をさらに内部に画定するとともに、前記接続空間部と前記気液接触部とを仕切る仕切部材を含み、
前記仕切部材の下端は、前記堰部の上端よりも下方に位置する、請求項2に記載の船舶用脱硫装置の排水システム。 - 前記脱硫塔には、前記接続空間部と大気とを連通する大気開放口が形成される、請求項3に記載の船舶用脱硫装置の排水システム。
- 前記脱硫塔は、前記脱硫塔の対向する一対の壁面を接続するとともに、前記液だまり部を横断する横断部材を有する、請求項3又は4に記載の船舶用脱硫装置の排水システム。
- 前記横断部材は、前記仕切部材が延在する方向に沿って延在する、請求項5に記載の船舶用脱硫装置の排水システム。
- 前記横断部材の上端は、前記堰部の上端よりも上方に位置し、
前記横断部材の下端は、前記堰部の上端よりも下方に位置し、
前記横断部材の下端と前記脱硫塔の底面との間に隙間が設けられた、請求項6に記載の船舶用脱硫装置の排水システム。 - 前記気液接触部と前記接続空間部とが隣接する方向を第1方向、
前記第1方向における前記気液接触部側を一方側、及び
前記第1方向における前記接続空間部側を他方側、と定義し、且つ、
前記液だまり部の前記第1方向に沿った長さをL、
前記液だまり部における前記第1方向の一方側から前記仕切部材までの長さをL1、
前記液だまり部における前記仕切部材から前記堰部までの長さをL2、
前記堰部の高さと前記仕切部材の下端の高さとの差をD、と定義した場合に、下記式(A)を満たす、請求項3乃至7の何れか1項に記載の船舶用脱硫装置の排水システム。
D>max{L1、L2}×tanθ・・・式(A)
(ただし、上記式(A)において、第1方向が船舶の幅方向に沿う場合はθ=22.5度とし、第1方向が船舶の前後方向に沿う場合はθ=15度とする。) - 前記脱硫塔の外部に位置するとともに前記液だまり部を内部に画定する中継タンクをさらに備える、請求項1に記載の船舶用脱硫装置の排水システム。
- 前記中継タンクは、前記排水ラインに接続される接続空間部であって、前記堰部が設けられる接続空間部をさらに内部に画定する、請求項9に記載の船舶用脱硫装置の排水システム。
- 前記中継タンクは、前記接続空間部と大気とを連通する大気開放口が形成される、請求項10に記載の船舶用脱硫装置の排水システム。
- 前記排水ラインの内部における前記排水の液面位置を測定するための液面計と、
前記喫水線よりも下方において前記排水ラインに設けられた液面位置調整バルブと、
前記液面計で測定された前記液面位置に基づいて、前記液面位置調整バルブの開度を制御するバルブコントローラと、をさらに備える、請求項1乃至11の何れか1項に記載の船舶用脱硫装置の排水システム。 - 前記排出口から排出される前記洗浄液を含む前記液体と前記船舶の周囲の水とを混合するためのノズルをさらに備える、請求項1乃至12の何れか1項に記載の船舶用脱硫装置の排水システム。
- 前記排水ラインにおける前記喫水線よりも上方の所定の位置と、前記船舶の外部とを接続する溢流管をさらに備える、請求項1乃至13の何れか1項に記載の船舶用脱硫装置の排水システム。
- 前記排水ラインに流体を注入するための流体注入装置をさらに備える、請求項1乃至14の何れか1項に記載の船舶用脱硫装置の排水システム。
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SG11201903136TA SG11201903136TA (en) | 2017-03-24 | 2018-03-23 | Drainage system for marine desulfurization device |
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JP6290533B2 (ja) * | 2012-12-10 | 2018-03-07 | 三菱重工業株式会社 | 舶用推進システムおよびその運用方法 |
CN103007694B (zh) * | 2012-12-27 | 2014-09-24 | 上海海事大学 | 船舶柴油机尾气海水脱硫装置 |
KR101829353B1 (ko) * | 2013-01-30 | 2018-02-19 | 후지 덴키 가부시키가이샤 | 선박용 디젤 엔진 배기가스 처리 시스템 |
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2018
- 2018-03-23 EP EP18772249.1A patent/EP3604116A4/en not_active Withdrawn
- 2018-03-23 SG SG11201903136TA patent/SG11201903136TA/en unknown
- 2018-03-23 CN CN201880003908.4A patent/CN109843714B/zh active Active
- 2018-03-23 KR KR1020197007320A patent/KR102145718B1/ko active IP Right Grant
- 2018-03-23 JP JP2019507048A patent/JP6775670B2/ja active Active
- 2018-03-23 WO PCT/JP2018/011925 patent/WO2018174291A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
KR20190038651A (ko) | 2019-04-08 |
JP6775670B2 (ja) | 2020-10-28 |
EP3604116A4 (en) | 2021-01-20 |
SG11201903136TA (en) | 2019-05-30 |
KR102145718B1 (ko) | 2020-08-19 |
CN109843714B (zh) | 2021-09-24 |
EP3604116A1 (en) | 2020-02-05 |
CN109843714A (zh) | 2019-06-04 |
JPWO2018174291A1 (ja) | 2019-06-27 |
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