WO2017168804A1 - Exhaust gas purification apparatus and vessel provided with same - Google Patents

Exhaust gas purification apparatus and vessel provided with same Download PDF

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Publication number
WO2017168804A1
WO2017168804A1 PCT/JP2016/080964 JP2016080964W WO2017168804A1 WO 2017168804 A1 WO2017168804 A1 WO 2017168804A1 JP 2016080964 W JP2016080964 W JP 2016080964W WO 2017168804 A1 WO2017168804 A1 WO 2017168804A1
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WO
WIPO (PCT)
Prior art keywords
exhaust
exhaust gas
gas purification
casing
adjacent
Prior art date
Application number
PCT/JP2016/080964
Other languages
French (fr)
Japanese (ja)
Inventor
横山　哲也
俊次 濱岡
Original Assignee
ヤンマー株式会社
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Publication date
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Publication of WO2017168804A1 publication Critical patent/WO2017168804A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/04—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting 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
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors

Definitions

  • the present invention relates to an exhaust gas purification device and a ship equipped with the same.
  • a selective reduction type NOx catalyst SCR catalyst
  • ammonia is used as a reducing agent.
  • An exhaust purification device that reduces NOx to nitrogen and water is known.
  • the urea water is supplied into the exhaust gas from the urea water injection nozzle disposed inside the exhaust pipe, and ammonia is generated from the urea water by the heat of the exhaust gas, so that NOx is reduced to nitrogen and water (Patent Document 1). reference).
  • the exhaust gas purification device of the present invention is an exhaust gas purification device that purifies exhaust discharged from each of a plurality of engines, each engine of the plurality of engines is provided with an exhaust passage through which exhaust flows, A catalyst is provided in the exhaust flow path, the exhaust flow paths are provided adjacent to each other in the plurality of exhaust flow paths, and a heat insulating structure is provided between the exhaust flow paths adjacent to each other. .
  • the plurality of exhaust passages are provided in one casing.
  • the plurality of exhaust passages are respectively provided in individually formed casings, and the plurality of casings are connected to each other by a connector.
  • the exhaust gas purifying apparatus of the present invention is an exhaust gas purifying apparatus for purifying exhaust discharged from each of a plurality of engines, and each of the plurality of engines is provided with an exhaust passage through which exhaust flows.
  • the exhaust passage is provided with a catalyst, and the exhaust passages are provided adjacent to each other in the plurality of exhaust passages, and at least one set of the exhaust passages adjacent to each other. In between, it is partitioned by a partition plate that does not have a heat insulating structure, and when the plurality of engines are driven, exhaust gas flows between a pair of exhaust passages partitioned by the partition plate It is.
  • the ship of the present invention includes the exhaust gas purification device.
  • FIG. 1 It is a side view of a ship. It is front sectional drawing of FIG. It is a perspective view which shows the exhaust-gas purification apparatus of 1st embodiment. It is a figure which shows the exhaust-gas purification apparatus of 1st embodiment, (a) It is a top view of an exhaust-gas purification apparatus, (b) It is a front view of an exhaust-gas purification apparatus, (c) It is a side view of an exhaust-gas purification apparatus. . (A) It is a perspective view which shows a connector and a fixture, (b) It is a top view which shows a connector and a fixture.
  • (C) It is a side view of an exhaust-gas purification apparatus. . It is a figure which shows the exhaust-gas purification apparatus of 5th embodiment.
  • (A) It is a top view of an exhaust-gas purification apparatus.
  • (B) It is a front view of an exhaust-gas purification apparatus.
  • (C) It is a side view of an exhaust-gas purification apparatus. .
  • (A) It is a top view of an exhaust-gas purification apparatus.
  • (B) It is a front view of an exhaust-gas purification apparatus.
  • (C) It is a side view of an exhaust-gas purification apparatus. .
  • FIG. 7 It is a figure which shows the exhaust-gas purification apparatus of 7th embodiment.
  • A It is a top view of an exhaust-gas purification apparatus.
  • B It is a front view of an exhaust-gas purification apparatus.
  • C It is a side view of an exhaust-gas purification apparatus. .
  • the exhaust gas purification device 31 mounted on the ship 1 will be described.
  • “upstream side” indicates the upstream side in the fluid flow direction
  • “downstream side” indicates the downstream side in the fluid flow direction.
  • the bow side of the ship 1 is defined as “front side”
  • the stern side of the ship 1 is defined as “rear side”.
  • the exhaust gas purification apparatus 31 of this embodiment is mounted in the ship 1, it is not limited to this. As long as a plurality of engines are provided, the exhaust gas purification device 31 can be applied not only to a ship but also to a land vehicle generator disposed in a moving vehicle such as an automobile or a building.
  • the ship 1 will be described with reference to FIGS.
  • the ship 1 includes a hull 2, a cabin 3 provided on the stern side of the hull 2, a funnel 4 disposed at the rear of the cabin 3, and a propeller 5 and a rudder 6 provided at the lower rear of the hull 2.
  • a skeg 8 is integrally formed on the bottom 7 of the stern side.
  • a propeller shaft 9 that rotationally drives the propeller 5 is supported on the skeg 8.
  • a hold 10 is provided on the bow side and the center of the hull 2.
  • An engine room 11 is provided on the stern side in the hull 2.
  • the engine room 11 is provided with a main engine 12 (diesel engine in the present embodiment) and a speed reducer 13 which are driving sources of the propeller 5, and a power generator 14 for supplying electric power to the electrical system in the hull 2. ing.
  • the propeller 5 is rotationally driven by rotational power from the main engine 12 via the speed reducer 13.
  • the interior of the engine room 11 is partitioned vertically by an upper deck 15, a second deck 16, a third deck 17 and an inner bottom plate 18.
  • the main engine 12 and the speed reducer 13 are installed on the inner bottom plate 18 at the lowermost stage of the engine room 11, and the power generator 14 is installed on the third deck 17 at the middle stage of the engine room 11.
  • the power generator 14 includes a plurality of diesel generators 19 (three in this embodiment).
  • the diesel generator 19 is configured by combining a power generation engine 20 and a power generator 21 that generates power by driving the power generation engine 20.
  • Each power generation engine 20 is connected to an air intake passage (not shown) for air intake and an exhaust pipe 22 for exhaust discharge.
  • the exhaust pipe 22 extends to the funnel 4 and directly communicates with the outside.
  • the exhaust pipe 22 is provided for each power generation engine 20.
  • the plurality of exhaust pipes 22 are provided with exhaust gas purification devices 31 that purify the exhaust discharged from the power generation engine 20.
  • Air taken in through the intake passage is sent to each cylinder of the power generation engine 20.
  • the fuel sucked from the fuel tank is pumped into the combustion chamber of each cylinder by the fuel injection device, and the expansion stroke accompanying the self-ignition combustion of the mixer is performed by each combustion chamber.
  • Exhaust gas discharged from each power generation engine 20 is discharged to the outside through the exhaust gas purification device 31.
  • the exhaust gas purification device 31 purifies the exhaust discharged from each of a plurality of engines (in this embodiment, the power generation engine 20).
  • the exhaust gas purification device 31 is provided with a plurality of exhaust passages 32 through which exhaust for each of the plurality of power generation engines 20 out of all the power generation engines 20 provided in the ship 1.
  • three exhaust passages 32 are provided.
  • Each of the plurality of exhaust passages 32 is provided with a catalyst for reducing exhaust.
  • each exhaust passage 32 is formed in a casing 33 that is individually formed, and a catalyst is disposed inside the casing 33.
  • the individually formed casings 33 are integrally provided by a connector.
  • the casing 33 is made of a heat-resistant metal material and is formed in a substantially cylindrical shape (in this embodiment, a rectangular tube shape).
  • the exhaust flow path 32 formed in the casing 33 includes a main flow path 32a for purifying the exhaust gas by selectively reducing NOx in the exhaust gas by a partition plate 36 extending along the exhaust movement direction.
  • a bypass passage 32b that is formed as a passage path and that exhausts the exhaust gas to the outside without purifying it is partitioned.
  • the upstream end of the casing 33 is partitioned into a main flow path entrance and a bypass flow path entrance by the partition plate 36, and the downstream end of the casing 33 is connected to the main flow path 32a and the bypass flow. It forms so that the path
  • a NOx catalyst 35 for reducing NOx in the exhaust is disposed in the main flow path 32a of each exhaust flow path 32.
  • the NOx catalyst 35 is formed of a material containing a metal such as alumina, zirconia, vanadia / titania or zeolite.
  • the NOx catalyst 35 is composed of a substantially rectangular parallelepiped having a honeycomb structure in which a large number of through holes are formed.
  • a soot blower 37 that removes dust adhering to the NOx catalyst 35 by pressurized air is provided on one side surface of the casing 33 (in this embodiment, a lower side surface on which an inspection window 43 described later is provided).
  • the soot blower 37 includes an air injection nozzle that injects pressurized air and an injection valve (not shown) that communicates or blocks the flow path of the pressurized air.
  • the air injection nozzle is connected to a tank for storing air, and the air supplied from the tank is injected to the NOx catalyst 35 by the air injection nozzle, thereby making it possible to remove the dust adhering to the NOx catalyst 35.
  • An inspection window 43 capable of inspecting the NOx catalyst 35 housed in the casing 33 from the outside is provided on the side surface of the casing 33 on the main flow path 32a side.
  • the inspection window 43 includes an opening provided on the front side surface of the casing 33 and a lid that is detachably attached to the opening.
  • the NOx catalyst 35 can be accessed by removing the lid from the opening.
  • the inlet side piping 38 connected to the main flow path 32a and the bypass flow path 32b is connected to the upstream end of the casing 33, respectively.
  • the inlet side pipe 38 is a pipe that connects the exhaust pipe 22 of the power generation engine 20 and the exhaust passage 32 of the casing 33.
  • a main side flow path part 38a connected to the main flow path 32a of the casing 33 and a bypass side flow path part 38b connected to the bypass flow path 32b of the casing 33 are provided in the middle of the inlet side pipe 38.
  • a pipe that branches into two branches. The upstream end of the inlet side pipe 38 is connected to the exhaust pipe 22 of the power generation engine 20.
  • the main side switching valve 39 is provided in the main side flow path part 38 a of the inlet side pipe 38.
  • the main side switching valve 39 is provided with a main side switching valve 39a for switching the main side switching valve 39.
  • a bypass side switching valve 40 is provided in the bypass side flow path portion 38 b of the inlet side piping 38.
  • the bypass side switching valve 40 is provided with a bypass side switching valve 40a for switching the bypass side switching valve 40.
  • a urea water injection nozzle 41 serving as a reducing agent supply device that supplies urea water as a reducing agent to the exhaust, and exhaust gas and urea water are mixed in order from the upstream side to the main channel portion 38a of the inlet side pipe 38.
  • a mixing mixer 42 is disposed.
  • the reducing agent supply device includes a urea water tank (not shown) for storing urea water, a feed pump (not shown) for sucking urea water from the urea water tank, a device (not shown) for controlling the urea water injection amount, A urea water injection nozzle 41.
  • the main side switching valve 39a and the bypass side switching valve 40a are switched and driven, so that the urea guided to the main channel 38a is injected with urea water by the urea water injection nozzle 41, and the exhaust mixer.
  • the urea is decomposed into ammonia by the hydrolysis action.
  • the exhaust mixer 42 the exhaust gas mixed with ammonia is guided to the main flow path 32 a of the casing 33.
  • the exhaust to be guided comes into contact with the NOx catalyst 35 in the main flow path 32a, and after NOx is reduced to nitrogen and water, the exhaust is externally connected via the exhaust pipe 22 connected to the downstream end of the casing 33. To be discharged.
  • the exhaust gas guided to the bypass-side flow path portion 38b is guided to the bypass flow path 32b of the casing 33, and then the casing 33 is left as it is. It is discharged to the outside through an exhaust pipe 22 connected to the downstream end portion.
  • a plurality of exhaust passages 32 constituting the exhaust gas purification device 31 are provided adjacent to each other.
  • Each casing 33 in which each exhaust passage 32 is formed is provided side by side along the other side (in this embodiment, the left-right direction of the ship 1) from one side.
  • Each casing 33 is provided with an inspection window 43, a soot blower 37, and the like on a side surface excluding an adjacent surface of the casing 33. In this embodiment, it arranges side by side so that the side surface in which the inspection window 43 and the soot blower 37 are provided becomes the same side surface (front side surface).
  • each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals.
  • the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
  • Each casing 33 is provided with a soot blower 37 or the like on the side surface excluding its adjacent surface, so that the casing 33 can be easily arranged at a predetermined interval without causing the soot blower 37 or the like to become an obstacle. Space can be saved. Further, by arranging the casings 33 side by side so that the inspection window 43 is in a predetermined direction, the inside of each casing 3 can be easily inspected, and maintenance work is facilitated.
  • the reducing agent supply device provided in the inlet side pipe 38 connected to the upstream end portion of the casing 33 is also provided on the side surface excluding the adjacent direction of each casing 33 so that each casing 33 can be easily attached. Spaces can be saved by providing a predetermined interval.
  • a plurality of casings 33 provided adjacent to each other are connected by a connector.
  • the connector is configured by a plate-like member 34 extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction) (see FIG. 5).
  • the plate-like member 34 is formed in a ladder shape by arranging a plurality of holes 34 h into which the bottoms of the casings 33 are fitted.
  • Each casing 33 is connected by fitting each casing 33 in the hole 34h of the plate-like member 34 and fixing it through a stay or the like.
  • the connector is configured to fix the bottom portion of the casing 33, but is not limited thereto, and for example, the upper portion of each casing 33 may be fixed.
  • a plurality of lifting brackets 44 are integrally provided on the outer periphery of the upper portion of each casing 33.
  • two lifting metal fittings are attached to the upper side of the two side surfaces of the casing 33 that are in a mutually parallel positional relationship.
  • a plurality of lifting brackets 44 are locked to a hook of a chain block, the casing 33 is moved up and down by the chain block, and the casing 33 can be easily assembled on the upper side of the engine room 11. .
  • the casing 33 provided at the end portion in the adjacent direction (in this embodiment, the left-right direction), that is, in the present embodiment, outside the casing 33 provided at the end portion in the left-right direction.
  • a fixture for installing the exhaust gas purification device 31 on a predetermined position of the ship 1 (for example, a fixed member provided on a deck such as the second deck or a wall surface of the ship 1) is provided.
  • the fixture includes an extended portion 45a formed so as to extend outward from the respective casings 33 provided at both ends of the plate-like member 34 constituting the coupling tool, and the extended portion 45a and the casing 33. And a fixing rib 45b for fixing the lower side surface of the head (see FIG. 5).
  • a part of the plate-like member 34 constituting the coupling tool is used as an installation tool.
  • the extending portion 45 a is provided with a plurality of fastening holes (not shown), and the exhaust gas purification device 31 is fixed to the ship 1 by fastening to a predetermined position of the ship 1 via a fastener such as a bolt.
  • the casings 33 that are integrally provided via the coupling tool are installed on the ship 1, the number of installation tools can be reduced as compared with the case where each casing 33 is individually installed on the ship 1.
  • the space for arranging a plurality of reactors can be reduced by the reduced amount of the equipment, and the space can be saved. Therefore, installation work and maintenance work become easy.
  • a part of plate-shaped member 34 which comprises a connection tool can be utilized as an installation tool, an assembly property can be improved. Further, the fixing rib 45b can prevent the extending portion 45a from being bent when the casing 33 is disposed.
  • the plurality of exhaust flow paths 32 provided adjacent to each other can be configured to have a heat insulating structure, thereby preventing a decrease in exhaust temperature due to heat radiation to the adjacent casing 33.
  • space saving of the exhaust gas purification device 31 can be achieved, and installation work and maintenance work become easy.
  • a connector for connecting a plurality of casings 33 provided adjacent to each other is constituted by a pair of L steels 34a.
  • the coupling tool is constituted by a pair of L steels 34a extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction).
  • the pair of L steels 34a are arranged side by side at the bottom of each casing 33 so as to support the front end portion and the rear end portion of each casing 33, and are fastened to each casing 33 by a fastener such as a bolt.
  • the ends in the longitudinal direction of the pair of L steels 34a are formed so as to extend outward of the casing 33, respectively.
  • the fixture is composed of an extension portion at the longitudinal end portion of the pair of L steels 34 a and a fixing rib 45 c that fixes the lower side surface of the casing 33. That is, a part of a pair of L steel 34a which comprises a connection tool is utilized as an installation tool.
  • the exhaust gas purifying device 31a is fixed to the ship 1 by fastening the bottom portions of the pair of L steels 34a to predetermined positions of the ship 1 via fasteners such as bolts.
  • the casings 33 can be integrally connected via the connector, and the exhaust gas purification device 31a has the same effect as the exhaust gas purification device 31 of the embodiment described above.
  • the connection tool is comprised by a pair of L steel 34a, it is not limited to this, For example, you may comprise by a pair of H steel.
  • a connector for connecting a plurality of adjacent casings 33 is configured by an L steel 34 d and a bracket 34 e that connect the adjacent casings 33.
  • One side surface of the L steel 34d is welded and fixed to each adjacent surface of the casing 33 provided in the center.
  • a bracket 34e that supports and fixes the other side surface of the L steel 34d is welded and fixed to adjacent surfaces of the casings 33 provided on the left and right.
  • Each casing 33 provided in the center is provided on the left and right by fastening the other side surface of the L steel 34d of the casing 33 provided in the center to the bracket 34e of each casing 33 provided on the left and right by a fastener such as a bolt. 33.
  • the fixture includes a plate-like member 45d formed so as to extend outward from each casing 33, an outwardly extending portion of the plate-like member 45d, and a fixing portion rib for fixing the lower side surface of the casing 33. 45e.
  • the exhaust gas purifying device 31 b is fixed to the ship 1 by fastening the outwardly extending portion of the plate-like member 45 d to a predetermined position of the ship 1 via a fastener such as a bolt.
  • the exhaust gas purifying device 31b has the same effect as the exhaust gas purifying device 31 of the above-described embodiment by connecting the casings 33 via the connector and installing them on the ship 1.
  • the exhaust gas purification device 31c of the fourth embodiment will be described with reference to FIG.
  • the plurality of exhaust passages 32 constituting the exhaust gas purification device 31c are provided adjacent to each other.
  • the respective casings 33 in which the respective exhaust flow paths 32 are formed are provided adjacent to each other so as to have a substantially inverted L shape in plan view.
  • Each casing 33 is arranged side by side so that the inspection window 43, the soot blower 37, and the like are provided on the side surface excluding the adjacent surface of the casing 33.
  • each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals.
  • the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
  • the central casing 33 and the left casing 33 are arranged so that the inspection window 43 and the soot blower 37 are provided on the front side, respectively, and the rear casing 33 is provided with the inspection window 43 and the soot blower 37 on the right side. Placed in.
  • Each casing 33 is provided with a soot blower 37 or the like on the side surface excluding its adjacent surface, so that the casing 33 can be easily arranged at a predetermined interval without causing the soot blower 37 or the like to become an obstacle. Space can be saved. Further, by arranging the casings 33 side by side so that the inspection window 43 is in a predetermined direction, the inside of each casing 3 can be easily inspected, and maintenance work is facilitated.
  • the reducing agent supply device, the valve, and the like provided in the inlet side pipe 38 connected to the upstream end of the exhaust gas purification device 31c are also provided except in the adjacent direction of each casing 33, so that Each casing 33 can be provided at a predetermined interval, and space saving can be achieved.
  • a plurality of casings 33 provided adjacent to each other are connected by a connector.
  • the connector is constituted by a plate-like member 34 f extending in the adjacent direction of the plurality of casings 33.
  • the plate-like member 34f is formed with holes for fitting the bottoms of the respective casings 33, and the respective casings 33 are coupled by fitting the respective casings 33 into the holes and fixing them through a stay or the like.
  • the connector is configured to fix the bottom portion of the casing 33, but is not limited thereto, and for example, the upper portion of each casing 33 may be fixed.
  • the casing 33 provided at the end portion in the adjacent direction, that is, in the present embodiment, the outer side in the adjacent direction (left side) of the left casing 33 and the outer side in the adjacent direction of the rear casing.
  • a fixture for installing the exhaust gas purification device 31c at a predetermined position of the ship 1 is provided on the (rear) side.
  • the fixture includes an extended portion 45f formed so as to extend outward from the respective casings 33 provided at both ends of the plate-like member 34f constituting the connector, and the extended portion 45f and the casing 33. And a fixing rib 45g for fixing the lower side surface of the fixing member.
  • a part of the plate-like member 34f constituting the coupling tool is used as an installation tool.
  • the exhaust gas purifying device 31c is fixed to the ship 1 by fastening the extending portion 45f to a predetermined position of the ship 1 via a fastener such as a bolt.
  • the exhaust flow path 32 is provided adjacently so as to be substantially L-shaped in plan view, but the exhaust flow path 32 may be provided adjacently, and the arrangement direction thereof is limited. Not.
  • the exhaust gas purification device 31c has the same effects as the exhaust gas purification device 31 of the embodiment described above.
  • the exhaust gas purification device 31d of the fifth embodiment will be described with reference to FIG.
  • the plurality of exhaust passages 32 constituting the exhaust gas purification device 31d are provided adjacent to each other.
  • the plurality of exhaust passages 32 provided in the exhaust gas purification device 31d are provided in one casing 33a.
  • Each exhaust passage 32 is provided from one side to the other side (in this embodiment, the left-right direction of the ship 1).
  • the plurality of exhaust passages 32 are formed in one casing 33a.
  • the casing 33a is made of a heat-resistant metal material and is formed in a substantially rectangular tube shape.
  • a partition plate 46 is provided inside the casing 33a to partition between the adjacent exhaust flow paths 32.
  • the adjacent exhaust flow paths 32 are configured to have a heat insulating structure.
  • the exhaust passages 32 provided in the casing 33a are provided at predetermined intervals via a heat insulating material such as glass wool (see the thin ink portion shown in FIG. 9).
  • the predetermined interval refers to an interval that can prevent a temperature drop of the exhaust due to heat radiation from one exhaust passage 32 to another exhaust passage 32.
  • a heat insulating material is provided between the exhaust passages 32 to prevent a temperature drop due to heat dissipation.
  • the fixture includes a plate-like member 45h formed to extend outward from the casings 33 provided at both ends, an outwardly extending portion 45i of the plate-like member 45h, and a lower side surface of the casing 33a. And a fixing rib 45j for fixing.
  • the exhaust gas purification device 31d is provided adjacent to each exhaust flow channel 32 by providing a plurality of exhaust flow channels 32 via a heat insulating material in one integrally formed casing 33a. Therefore, the space can be saved, and the same effect as the exhaust gas purification device 31 of the embodiment shown above can be obtained.
  • the exhaust gas purification device 31e of the sixth embodiment will be described with reference to FIG.
  • the exhaust gas purification device 31e is provided with a plurality of exhaust passages 32 through which exhaust for each of the power generation engines 20 among all the power generation engines 20 provided in the ship 1 flows.
  • two exhaust passages 32 are provided.
  • Each exhaust passage 32 is provided in a separately formed casing 33, and the casing 33 is connected by a connector.
  • the connector is configured by a plate-like member 34g extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction).
  • Each casing 33 in which each exhaust passage 32 is formed is provided from one side to the other side (in the present embodiment, the left-right direction of the ship 1).
  • Each casing 33 is arranged side by side so that the inspection window 43, the soot blower 37, and the like are provided on the side surface excluding the adjacent surface of the casing 33. In this embodiment, it arranges side by side so that the side surface in which the inspection window 43 and the soot blower 37 are provided becomes a front side surface.
  • each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals.
  • the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
  • the exhaust passages through which the exhaust of some of the power generation engines 20 flow are provided adjacent to each other, and between the exhaust passages 32 are insulated. You may comprise so that it may have.
  • the exhaust gas purification device 31f of the seventh embodiment will be described with reference to FIG.
  • the exhaust gas purification device 31f is provided with a plurality of exhaust passages 32 through which exhaust for each of the plurality of power generation engines 20 out of all the power generation engines 20 provided in the ship 1 is provided.
  • three exhaust passages 32 are provided.
  • Each exhaust passage 32 is provided in each of the casings 33 and 48, and the casings 33 and 48 are connected by a connector.
  • the plurality of exhaust passages 32 constituting the exhaust gas purification device 31f are provided adjacent to each other.
  • Each exhaust passage 32 is provided along the other side from one side.
  • the boats 1 are arranged side by side in the left-right direction.
  • At least one exhaust flow path 32 is configured by a partition plate 47 having no heat insulating structure.
  • a space between the flow path 32 and the exhaust flow path 32 provided on the right side thereof is constituted by a partition plate 47 that does not have a heat insulating structure.
  • the central exhaust passage 32 in the adjacent direction and the exhaust passage 32 provided on the right side are formed in one casing 48, and the partition plate 47 having no heat insulation structure in the casing 48. It is divided by.
  • the partition plate 47 may be a member that partitions the central exhaust passage 32 and the right exhaust passage 32 in the adjacent direction.
  • the casing 48 is configured such that the central exhaust passage 32 in the adjacent direction and the exhaust passage 32 provided on the right side are integrally formed.
  • a casing in which the central exhaust flow path 32 in the adjacent direction is formed and a casing in which the right exhaust flow path 32 is formed are individually formed so that the casings are in close contact with each other. Also good.
  • a space between the central exhaust passage 32 and the left exhaust passage 32 in the adjacent direction is configured to have a heat insulating structure.
  • the casing 48 in which the exhaust passage 32 provided in the center is formed and the casing 33 in which the exhaust passage 32 provided on the left are formed are provided at a predetermined interval.
  • the exhaust gas is configured to flow through the exhaust passages 32 and 32 partitioned by the partition plate 47 having no heat insulating structure.
  • the exhaust flow path 32 that is not partitioned by the partition plate 47 whose adjacent direction end portion does not have a heat insulating structure, that is, in the present embodiment, is provided on the left side.
  • the power generation engine 20 connected to the exhaust passage 32 provided on the left side is driven so that the exhaust flows through the passage 32.
  • At least one exhaust flow path 32 is partitioned by the partition plate 47 having no heat insulating structure, and when the plurality of power generation engines 20 are driven, the partition is separated.
  • the present invention can be used for an exhaust gas purification device.

Abstract

The present invention addresses the problem of providing an exhaust gas purification apparatus capable of achieving space saving and facilitating installation work and maintenance work, and a vessel provided with the exhaust gas purification apparatus. An exhaust gas purification apparatus (31) for purifying exhaust gases discharged from a plurality of power generation engines (20) is configured such that: exhaust gas flow passages (32) through which the exhaust gas flows are provided to the respective power generation engines (20); a NOx catalyst (37) is provided to the respective exhaust gas flow passages (32); the exhaust gas flow passages (32) are provided adjacently to one another; and a heat insulating structure is formed between the exhaust gas flow passages (32) adjacent to one another.

Description

排気ガス浄化装置及びこれを備えた船舶Exhaust gas purification device and ship equipped with the same
　本発明は、排気ガス浄化装置及びこれを備えた船舶に関する。 The present invention relates to an exhaust gas purification device and a ship equipped with the same.
　従来、内熱機関から排出される排気に含まれるＮＯｘ（窒素酸化物）を低減させるために、排気管の内部に選択還元型のＮＯｘ触媒（ＳＣＲ触媒）を配設し、アンモニアを還元剤として、ＮＯｘを窒素と水とに還元する排気浄化装置が知られている。排気管の内部に配置される尿素水噴射ノズルから尿素水を排気中に供給し、排気の熱によって尿素水からアンモニアを生成することでＮＯｘを窒素と水に還元するものである（特許文献１参照）。 Conventionally, in order to reduce NOx (nitrogen oxide) contained in exhaust exhausted from an internal heat engine, a selective reduction type NOx catalyst (SCR catalyst) is provided inside the exhaust pipe, and ammonia is used as a reducing agent. An exhaust purification device that reduces NOx to nitrogen and water is known. The urea water is supplied into the exhaust gas from the urea water injection nozzle disposed inside the exhaust pipe, and ammonia is generated from the urea water by the heat of the exhaust gas, so that NOx is reduced to nitrogen and water (Patent Document 1). reference).
特開２０１５－８６７２６号公報Japanese Patent Laying-Open No. 2015-86726
　しかし、例えば、船舶においては、船舶を動かす駆動源となる主エンジンと船内電力を補う発電機用エンジンがそれぞれ複数台配置されると、エンジンの排気管のレイアウトが限定されて、排気ガス浄化装置の設置スペースを十分にとることができず、設置作業やメンテナンス作業が困難となる場合があった。そこで、本発明の排気ガス浄化装置及びこれを備えた船舶では、省スペース化を図ることができ、設置作業やメンテナンス作業が容易となる排気ガス浄化装置及びこれを備えた船舶を提供することを課題とする。 However, in a marine vessel, for example, when a plurality of main engines serving as a driving source for moving the marine vessel and a plurality of generator engines supplementing inboard power are arranged, the layout of the exhaust pipe of the engine is limited, and the exhaust gas purification device In some cases, the installation space and the maintenance work are difficult. Therefore, in the exhaust gas purification device of the present invention and a ship equipped with the exhaust gas purification device, it is possible to save space, and to provide an exhaust gas purification device that facilitates installation work and maintenance work and a ship equipped with the same. Let it be an issue.
　本発明の排気ガス浄化装置は、複数のエンジンからそれぞれ排出される排気を浄化する排気ガス浄化装置であって、前記複数のエンジンのそれぞれのエンジンには、排気が流れる排気流路が設けられ、前記排気流路には、触媒が設けられ、複数の前記排気流路では、前記排気流路が隣接して設けられ、前記互いに隣接する排気流路の間には、断熱構造を有するものである。 The exhaust gas purification device of the present invention is an exhaust gas purification device that purifies exhaust discharged from each of a plurality of engines, each engine of the plurality of engines is provided with an exhaust passage through which exhaust flows, A catalyst is provided in the exhaust flow path, the exhaust flow paths are provided adjacent to each other in the plurality of exhaust flow paths, and a heat insulating structure is provided between the exhaust flow paths adjacent to each other. .
　本発明の排気ガス浄化装置においては、前記複数の排気流路は、一のケーシングに設けられることが好ましい。 In the exhaust gas purification apparatus of the present invention, it is preferable that the plurality of exhaust passages are provided in one casing.
　本発明の排気ガス浄化装置においては、前記複数の排気流路は、個別に形成されるケーシングにそれぞれ設けられ、前記複数のケーシングは、連結具によってそれぞれが連結されることが好ましい。 In the exhaust gas purifying apparatus of the present invention, it is preferable that the plurality of exhaust passages are respectively provided in individually formed casings, and the plurality of casings are connected to each other by a connector.
　本発明の排気ガス浄化装置は、複数のエンジンからそれぞれ排出される排気を浄化する排気ガス浄化装置であって、前記複数のエンジンのうちのそれぞれのエンジンには、排気が流れる排気流路が設けられ、前記排気流路には、触媒が設けられ、複数の前記排気流路では、前記排気流路が互いに隣接して設けられ、前記互いに隣接する排気流路のうち少なくとも一組の排気流路の間には、断熱構造を有さない仕切り板によって仕切られ、前記複数のエンジンを駆動するときには、前記仕切り板で仕切られる一組の排気流路の間に排気が流れるように構成されるものである。 The exhaust gas purifying apparatus of the present invention is an exhaust gas purifying apparatus for purifying exhaust discharged from each of a plurality of engines, and each of the plurality of engines is provided with an exhaust passage through which exhaust flows. The exhaust passage is provided with a catalyst, and the exhaust passages are provided adjacent to each other in the plurality of exhaust passages, and at least one set of the exhaust passages adjacent to each other. In between, it is partitioned by a partition plate that does not have a heat insulating structure, and when the plurality of engines are driven, exhaust gas flows between a pair of exhaust passages partitioned by the partition plate It is.
　本発明の船舶は、前記排気ガス浄化装置を備えるものである。 The ship of the present invention includes the exhaust gas purification device.
　本発明の排気ガス浄化装置及びこれを備えた船舶によれば、設置作業やメンテナンス作業を容易に行うことができる。 According to the exhaust gas purification apparatus of the present invention and a ship equipped with the exhaust gas purification apparatus, installation work and maintenance work can be easily performed.
船舶の側面図である。It is a side view of a ship. 図１の正面断面図である。It is front sectional drawing of FIG. 第一実施形態の排気ガス浄化装置を示す斜視図である。It is a perspective view which shows the exhaust-gas purification apparatus of 1st embodiment. 第一実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 1st embodiment, (a) It is a top view of an exhaust-gas purification apparatus, (b) It is a front view of an exhaust-gas purification apparatus, (c) It is a side view of an exhaust-gas purification apparatus. . （ａ）連結具及び据付具を示す斜視図である（ｂ）連結具及び据付具を示す平面図である。(A) It is a perspective view which shows a connector and a fixture, (b) It is a top view which shows a connector and a fixture. 第二実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 2nd embodiment, (a) It is a top view of an exhaust-gas purification apparatus, (b) It is a front view of an exhaust-gas purification apparatus, (c) It is a side view of an exhaust-gas purification apparatus. . 第三実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 3rd embodiment. (A) It is a top view of an exhaust-gas purification apparatus. (B) It is a front view of an exhaust-gas purification apparatus. (C) It is a side view of an exhaust-gas purification apparatus. . 第四実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 4th embodiment. (A) It is a top view of an exhaust-gas purification apparatus. (B) It is a front view of an exhaust-gas purification apparatus. (C) It is a side view of an exhaust-gas purification apparatus. . 第五実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 5th embodiment. (A) It is a top view of an exhaust-gas purification apparatus. (B) It is a front view of an exhaust-gas purification apparatus. (C) It is a side view of an exhaust-gas purification apparatus. . 第六実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 6th embodiment. (A) It is a top view of an exhaust-gas purification apparatus. (B) It is a front view of an exhaust-gas purification apparatus. (C) It is a side view of an exhaust-gas purification apparatus. . 第七実施形態の排気ガス浄化装置を示す図である（ａ）排気ガス浄化装置の平面図である（ｂ）排気ガス浄化装置の正面図である（ｃ）排気ガス浄化装置の側面図である。It is a figure which shows the exhaust-gas purification apparatus of 7th embodiment. (A) It is a top view of an exhaust-gas purification apparatus. (B) It is a front view of an exhaust-gas purification apparatus. (C) It is a side view of an exhaust-gas purification apparatus. .
　以下において、船舶１に搭載される排気ガス浄化装置３１について説明する。なお、本実施形態における「上流側」とは流体の流れ方向における上流側を示し、「下流側」とは流体の流れ方向における下流側を示す。また、船舶１の船首側を「前側」と規定し、船舶１の船尾側を「後側」と規定する。本実施形態の排気ガス浄化装置３１は、船舶１に搭載されているが、これに限定されない。排気ガス浄化装置３１は、複数台のエンジンが設けられていれば、船舶に限らず自動車などの移動車両やビル等に配置される陸用発電機にも適用することができる。 Hereinafter, the exhaust gas purification device 31 mounted on the ship 1 will be described. In this embodiment, “upstream side” indicates the upstream side in the fluid flow direction, and “downstream side” indicates the downstream side in the fluid flow direction. Further, the bow side of the ship 1 is defined as “front side”, and the stern side of the ship 1 is defined as “rear side”. Although the exhaust gas purification apparatus 31 of this embodiment is mounted in the ship 1, it is not limited to this. As long as a plurality of engines are provided, the exhaust gas purification device 31 can be applied not only to a ship but also to a land vehicle generator disposed in a moving vehicle such as an automobile or a building.
　図１及び図２を用いて、船舶１について説明する。船舶１は、船体２と、船体２の船尾側に設けたキャビン３と、キャビン３の後方に配置されるファンネル４と、船体２の後方下部に設けられるプロペラ５及び舵６と、を備えている。船尾側の船底７には、スケグ８が一体的に形成されている。スケグ８には、プロペラ５を回転駆動させる推進軸９を軸支している。船体２内の船首側及び中央部には船倉１０が設けられている。船体２内の船尾側には機関室１１が設けられる。 The ship 1 will be described with reference to FIGS. The ship 1 includes a hull 2, a cabin 3 provided on the stern side of the hull 2, a funnel 4 disposed at the rear of the cabin 3, and a propeller 5 and a rudder 6 provided at the lower rear of the hull 2. Yes. A skeg 8 is integrally formed on the bottom 7 of the stern side. A propeller shaft 9 that rotationally drives the propeller 5 is supported on the skeg 8. A hold 10 is provided on the bow side and the center of the hull 2. An engine room 11 is provided on the stern side in the hull 2.
　機関室１１には、プロペラ５の駆動源である主エンジン１２（本実施形態ではディーゼルエンジン）及び減速機１３と、船体２内の電気系統に電力を供給するための発電装置１４とを配置している。主エンジン１２から減速機１３を経由した回転動力によって、プロペラ５が回転駆動される。機関室１１の内部は、上甲板１５、第二甲板１６、第三甲板１７及び内底板１８によって上下に仕切られている。本実施形態では、機関室１１の最下段の内底板１８上に主エンジン１２及び減速機１３を据え付け、機関室１１の中段の第三甲板１７上に発電装置１４を据え付けている。 The engine room 11 is provided with a main engine 12 (diesel engine in the present embodiment) and a speed reducer 13 which are driving sources of the propeller 5, and a power generator 14 for supplying electric power to the electrical system in the hull 2. ing. The propeller 5 is rotationally driven by rotational power from the main engine 12 via the speed reducer 13. The interior of the engine room 11 is partitioned vertically by an upper deck 15, a second deck 16, a third deck 17 and an inner bottom plate 18. In this embodiment, the main engine 12 and the speed reducer 13 are installed on the inner bottom plate 18 at the lowermost stage of the engine room 11, and the power generator 14 is installed on the third deck 17 at the middle stage of the engine room 11.
　図２に示すように、発電装置１４は、ディーゼル発電機１９を複数基（本実施形態では三台）備えている。ディーゼル発電機１９は、発電用エンジン２０と、発電用エンジン２０の駆動によって発電する発電機２１とを組み合わせて構成される。 As shown in FIG. 2, the power generator 14 includes a plurality of diesel generators 19 (three in this embodiment). The diesel generator 19 is configured by combining a power generation engine 20 and a power generator 21 that generates power by driving the power generation engine 20.
　各発電用エンジン２０には、空気取り込み用の吸気流路（図示しない）と排気排出用の排気管２２とが接続される。排気管２２は、ファンネル４まで延びていて外部に直接連通される。排気管２２は、発電用エンジン２０毎に設けられている。本実施形態では、発電用エンジン２０は、三基あるため、排気管２２は三つ存在する。複数の排気管２２には、発電用エンジン２０からそれぞれ排出される排気を浄化する排気ガス浄化装置３１が設けられる。 Each power generation engine 20 is connected to an air intake passage (not shown) for air intake and an exhaust pipe 22 for exhaust discharge. The exhaust pipe 22 extends to the funnel 4 and directly communicates with the outside. The exhaust pipe 22 is provided for each power generation engine 20. In the present embodiment, since there are three power generation engines 20, there are three exhaust pipes 22. The plurality of exhaust pipes 22 are provided with exhaust gas purification devices 31 that purify the exhaust discharged from the power generation engine 20.
吸気流路を通じて取り込まれる空気は、発電用エンジン２０の各気筒に送られる。各気筒の圧縮行程完了前後に、燃料タンクから吸い上げた燃料を燃料噴射装置によって気筒毎の燃焼室内に圧送し、各燃焼室によって混合器の自己着火燃焼に伴う膨張行程が行われる。各発電用エンジン２０から排出される排気は、排気ガス浄化装置３１を介して外部に排出される。 Air taken in through the intake passage is sent to each cylinder of the power generation engine 20. Before and after the compression stroke of each cylinder is completed, the fuel sucked from the fuel tank is pumped into the combustion chamber of each cylinder by the fuel injection device, and the expansion stroke accompanying the self-ignition combustion of the mixer is performed by each combustion chamber. Exhaust gas discharged from each power generation engine 20 is discharged to the outside through the exhaust gas purification device 31.
　図２から図５までを用いて、排気ガス浄化装置３１について説明する。
　排気ガス浄化装置３１は、複数のエンジン（本実施形態では、発電用エンジン２０）からそれぞれ排出される排気を浄化するものである。排気ガス浄化装置３１は、船舶１に設けられる全ての発電用エンジン２０のうち、複数の発電用エンジン２０毎の排気が流れる複数の排気流路３２が設けられる。本実施形態では、三つの排気流路３２が設けられる。複数の排気流路３２には、それぞれ排気を還元する触媒が設けられる。具体的には、各排気流路３２は、個別に形成されるケーシング３３にそれぞれ形成され、該ケーシング３３の内部に触媒が配置される。個別に形成されるケーシング３３は、連結具によって一体的に設けられる。 The exhaust gas purification device 31 will be described with reference to FIGS.
The exhaust gas purification device 31 purifies the exhaust discharged from each of a plurality of engines (in this embodiment, the power generation engine 20). The exhaust gas purification device 31 is provided with a plurality of exhaust passages 32 through which exhaust for each of the plurality of power generation engines 20 out of all the power generation engines 20 provided in the ship 1. In the present embodiment, three exhaust passages 32 are provided. Each of the plurality of exhaust passages 32 is provided with a catalyst for reducing exhaust. Specifically, each exhaust passage 32 is formed in a casing 33 that is individually formed, and a catalyst is disposed inside the casing 33. The individually formed casings 33 are integrally provided by a connector.
　ケーシング３３は、耐熱金属材料製で略筒状（本実施形態では、角筒状）に形成される。ケーシング３３に形成される排気流路３２は、その内部において、排気移動方向にそって延びる仕切り板３６によって、排気中のＮＯｘを選択還元することによって排気を浄化するメイン流路３２ａと、排気の通過経路として形成され、排気を浄化することなく外部へ排出するバイパス流路３２ｂと、に区画される。具体的には、ケーシング３３の上流側端部は、仕切り板３６によってメイン流路入り口とバイパス流路入り口とに区画されており、ケーシング３３の下流側端部は、メイン流路３２ａとバイパス流路３２ｂとが合流するように形成される。 The casing 33 is made of a heat-resistant metal material and is formed in a substantially cylindrical shape (in this embodiment, a rectangular tube shape). The exhaust flow path 32 formed in the casing 33 includes a main flow path 32a for purifying the exhaust gas by selectively reducing NOx in the exhaust gas by a partition plate 36 extending along the exhaust movement direction. A bypass passage 32b that is formed as a passage path and that exhausts the exhaust gas to the outside without purifying it is partitioned. Specifically, the upstream end of the casing 33 is partitioned into a main flow path entrance and a bypass flow path entrance by the partition plate 36, and the downstream end of the casing 33 is connected to the main flow path 32a and the bypass flow. It forms so that the path | route 32b may join.
　各排気流路３２のメイン流路３２ａには、排気中のＮＯｘを還元するＮＯｘ触媒３５が配置される。ＮＯｘ触媒３５は、例えばアルミナ、ジルコニア、バナジア／チタニア又はゼオライト等の金属を含有する材料から形成されている。ＮＯｘ触媒３５は、多数の貫通孔が形成されたハニカム構造を有する略直方体から構成されている。 In the main flow path 32a of each exhaust flow path 32, a NOx catalyst 35 for reducing NOx in the exhaust is disposed. The NOx catalyst 35 is formed of a material containing a metal such as alumina, zirconia, vanadia / titania or zeolite. The NOx catalyst 35 is composed of a substantially rectangular parallelepiped having a honeycomb structure in which a large number of through holes are formed.
　ケーシング３３の一側面（本実施形態では、後述の点検窓４３が設けられる側面下部）には、加圧空気によってＮＯｘ触媒３５に付着した煤塵を除去するスートブロワ３７が設けられる。スートブロワ３７は、加圧空気を噴射する空気噴射ノズルと、加圧空気の流路を連通又は遮断する噴射弁（図示しない）と、を備える。空気噴射ノズルは、空気を貯留するタンクと接続され、該タンクから供給される空気を空気噴射ノズルによってＮＯｘ触媒３５に噴射することでＮＯｘ触媒３５に付着した煤塵を除去することを可能とする。 A soot blower 37 that removes dust adhering to the NOx catalyst 35 by pressurized air is provided on one side surface of the casing 33 (in this embodiment, a lower side surface on which an inspection window 43 described later is provided). The soot blower 37 includes an air injection nozzle that injects pressurized air and an injection valve (not shown) that communicates or blocks the flow path of the pressurized air. The air injection nozzle is connected to a tank for storing air, and the air supplied from the tank is injected to the NOx catalyst 35 by the air injection nozzle, thereby making it possible to remove the dust adhering to the NOx catalyst 35.
　ケーシング３３のメイン流路３２ａ側の側面には、ケーシング３３の内部に収容されるＮＯｘ触媒３５を外部から点検可能な点検窓４３が設けられる。点検窓４３は、ケーシング３３の前側面に設けられる開口部と、該開口部に着脱可能に取り付けられる蓋と、によって構成される。蓋を開口部から取り外すことで、ＮＯｘ触媒３５にアクセス可能に構成される。 An inspection window 43 capable of inspecting the NOx catalyst 35 housed in the casing 33 from the outside is provided on the side surface of the casing 33 on the main flow path 32a side. The inspection window 43 includes an opening provided on the front side surface of the casing 33 and a lid that is detachably attached to the opening. The NOx catalyst 35 can be accessed by removing the lid from the opening.
　ケーシング３３の上流側端部には、メイン流路３２ａとバイパス流路３２ｂとにそれぞれ接続される入口側配管３８が接続される。入口側配管３８は、発電用エンジン２０の排気管２２と、ケーシング３３の排気流路３２と、を接続する配管である。入口側配管３８は、その中途部において、ケーシング３３のメイン流路３２ａと接続されるメイン側流路部３８ａと、ケーシング３３のバイパス流路３２ｂと接続されるバイパス側流路部３８ｂと、に二股に分岐する配管である。入口側配管３８の上流側端部は、発電用エンジン２０の排気管２２と接続される。 The inlet side piping 38 connected to the main flow path 32a and the bypass flow path 32b is connected to the upstream end of the casing 33, respectively. The inlet side pipe 38 is a pipe that connects the exhaust pipe 22 of the power generation engine 20 and the exhaust passage 32 of the casing 33. In the middle of the inlet side pipe 38, a main side flow path part 38a connected to the main flow path 32a of the casing 33 and a bypass side flow path part 38b connected to the bypass flow path 32b of the casing 33 are provided. A pipe that branches into two branches. The upstream end of the inlet side pipe 38 is connected to the exhaust pipe 22 of the power generation engine 20.
　入口側配管３８のメイン側流路部３８ａには、メイン側切換バルブ３９が設けられる。メイン側切換バルブ３９には、該メイン側切換バルブ３９を切換駆動させるメイン側切換バルブ３９ａが設けられる。入口側配管３８のバイパス側流路部３８ｂには、バイパス側切換バルブ４０が設けられる。バイパス側切換バルブ４０には、該バイパス側切換バルブ４０を切換駆動させるバイパス側切換バルブ４０ａが設けられる。メイン側切換バルブ３９及びバイパス側切換バルブ４０を切換駆動することで、発電用エンジン２０の排気をメイン側流路部３８ａ又はバイパス側流路部３８ｂに案内させることを可能とする。 The main side switching valve 39 is provided in the main side flow path part 38 a of the inlet side pipe 38. The main side switching valve 39 is provided with a main side switching valve 39a for switching the main side switching valve 39. A bypass side switching valve 40 is provided in the bypass side flow path portion 38 b of the inlet side piping 38. The bypass side switching valve 40 is provided with a bypass side switching valve 40a for switching the bypass side switching valve 40. By switching and driving the main side switching valve 39 and the bypass side switching valve 40, the exhaust of the power generation engine 20 can be guided to the main side flow path portion 38a or the bypass side flow path portion 38b.
　入口側配管３８のメイン側流路部３８ａには、上流側から順に、還元剤である尿素水を排気に供給する還元剤供給装置としての尿素水噴射ノズル４１と、排気と尿素水とを混合させる混合ミキサー４２とを配置している。還元剤供給装置は、尿素水を貯留する尿素水タンク（図示しない）と、尿素水タンクから尿素水を吸い上げるフィードポンプ（図示しない）と、尿素水噴射量を制御する装置（図示しない）と、尿素水噴射ノズル４１と、を備える。 A urea water injection nozzle 41 serving as a reducing agent supply device that supplies urea water as a reducing agent to the exhaust, and exhaust gas and urea water are mixed in order from the upstream side to the main channel portion 38a of the inlet side pipe 38. A mixing mixer 42 is disposed. The reducing agent supply device includes a urea water tank (not shown) for storing urea water, a feed pump (not shown) for sucking urea water from the urea water tank, a device (not shown) for controlling the urea water injection amount, A urea water injection nozzle 41.
　以上の構成において、メイン側切換バルブ３９ａ及びバイパス側切換バルブ４０ａを切換駆動することで、メイン側流路部３８ａに案内される排気は、尿素水噴射ノズル４１によって尿素水が噴射され、排気ミキサー４２に案内され、加水分解作用により尿素はアンモニアに分解される。排気ミキサー４２において、アンモニアと混合される排気が、ケーシング３３のメイン流路３２ａに案内される。案内される排気は、メイン流路３２ａにおいて、ＮＯｘ触媒３５と接触することで、ＮＯｘを窒素と水に還元されたのち、ケーシング３３の下流側端部と接続される排気管２２を介して外部に排出される。 In the configuration described above, the main side switching valve 39a and the bypass side switching valve 40a are switched and driven, so that the urea guided to the main channel 38a is injected with urea water by the urea water injection nozzle 41, and the exhaust mixer. The urea is decomposed into ammonia by the hydrolysis action. In the exhaust mixer 42, the exhaust gas mixed with ammonia is guided to the main flow path 32 a of the casing 33. The exhaust to be guided comes into contact with the NOx catalyst 35 in the main flow path 32a, and after NOx is reduced to nitrogen and water, the exhaust is externally connected via the exhaust pipe 22 connected to the downstream end of the casing 33. To be discharged.
　また、メイン側切換バルブ３９ａ及びバイパス側切換バルブ４０ａを切換駆動することで、バイパス側流路部３８ｂに案内される排気は、ケーシング３３のバイパス流路３２ｂに案内されたのち、そのまま、ケーシング３３の下流側端部と接続される排気管２２を介して外部に排出される。 Further, by switching and driving the main-side switching valve 39a and the bypass-side switching valve 40a, the exhaust gas guided to the bypass-side flow path portion 38b is guided to the bypass flow path 32b of the casing 33, and then the casing 33 is left as it is. It is discharged to the outside through an exhaust pipe 22 connected to the downstream end portion.
　排気ガス浄化装置３１を構成する複数の排気流路３２は、隣接して設けられる。各排気流路３２が形成される各ケーシング３３は、一側から他側（本実施形態では、船舶１の左右方向）に沿って並べて設けられる。各ケーシング３３は、点検窓４３やスートブロワ３７等が、ケーシング３３の隣接面を除いた側面に設けられる。本実施形態では、点検窓４３やスートブロワ３７が設けられる側面が同じ側面（前側面）となるように並べて配置される。 A plurality of exhaust passages 32 constituting the exhaust gas purification device 31 are provided adjacent to each other. Each casing 33 in which each exhaust passage 32 is formed is provided side by side along the other side (in this embodiment, the left-right direction of the ship 1) from one side. Each casing 33 is provided with an inspection window 43, a soot blower 37, and the like on a side surface excluding an adjacent surface of the casing 33. In this embodiment, it arranges side by side so that the side surface in which the inspection window 43 and the soot blower 37 are provided becomes the same side surface (front side surface).
　隣接して設けられる複数の排気流路３２間は、断熱構造を有するように構成される。具体的には、各排気流路３２は、各ケーシング３３にそれぞれ設けられるとともに、隣接するケーシング３３は、所定の間隔をあけて設けられる。ここでの、所定の間隔とは、一のケーシング３３と接続される発電用エンジン２０のみが駆動している状態において、一のケーシング３３から隣接する他のケーシング３３への放熱による、排気の温度低下を防ぐことができる間隔を指す。 Between a plurality of exhaust flow paths 32 provided adjacent to each other, a heat insulating structure is formed. Specifically, each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals. Here, the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
　各ケーシング３３は、その隣接面を除く側面にスートブロワ３７等が設けられることで、スートブロワ３７等が障害となることなく、容易に各ケーシング３３を所定の間隔をあけて並べて配置することができ、省スペース化を図ることができる。また、点検窓４３が所定の方向にくるように各ケーシング３３を並べて配置することで、各ケーシング３の内部を容易に点検することができ、メンテナンス作業が容易となる。 Each casing 33 is provided with a soot blower 37 or the like on the side surface excluding its adjacent surface, so that the casing 33 can be easily arranged at a predetermined interval without causing the soot blower 37 or the like to become an obstacle. Space can be saved. Further, by arranging the casings 33 side by side so that the inspection window 43 is in a predetermined direction, the inside of each casing 3 can be easily inspected, and maintenance work is facilitated.
　また、ケーシング３３の上流側端部と接続される入口側配管３８に設けられる還元剤供給装置も同様に、各ケーシング３３の隣接方向を除いた側面に設けられることで、容易に各ケーシング３３を所定の間隔をあけて設けることができ、省スペース化を図ることができる。 Similarly, the reducing agent supply device provided in the inlet side pipe 38 connected to the upstream end portion of the casing 33 is also provided on the side surface excluding the adjacent direction of each casing 33 so that each casing 33 can be easily attached. Spaces can be saved by providing a predetermined interval.
　隣接して設けられる複数のケーシング３３は、連結具によって連結される。連結具は、複数のケーシング３３の隣接方向（本実施形態では、左右方向）に延びる板状部材３４によって構成される（図５参照）。板状部材３４は、各ケーシング３３の底部を嵌める孔３４ｈが複数並べて配置されることで梯子状に形成される。板状部材３４の孔３４ｈに各ケーシング３３を嵌めこんでステー等を介して固定することで、各ケーシング３３は連結される。連結具は、ケーシング３３の底部を固定する構成としているが、これに限定されず、例えば、各ケーシング３３の上部を固定してもよい。 A plurality of casings 33 provided adjacent to each other are connected by a connector. The connector is configured by a plate-like member 34 extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction) (see FIG. 5). The plate-like member 34 is formed in a ladder shape by arranging a plurality of holes 34 h into which the bottoms of the casings 33 are fitted. Each casing 33 is connected by fitting each casing 33 in the hole 34h of the plate-like member 34 and fixing it through a stay or the like. The connector is configured to fix the bottom portion of the casing 33, but is not limited thereto, and for example, the upper portion of each casing 33 may be fixed.
　各ケーシング３３の上部外周側には、複数の吊り上げ用金具４４が一体的に設けられる。本実施形態では、ケーシング３３の互いに平行な位置関係にある二側面の上部側に吊り上げ用金具が二個ずつ取り付けられる。船舶１の組み立て工場において、例えば、チェンブロックのフックに複数の吊り上げ用金具４４を係止し、チェンブロックによってケーシング３３を昇降させ、機関室１１の上部側にケーシング３３を簡単に組み付けることができる。 A plurality of lifting brackets 44 are integrally provided on the outer periphery of the upper portion of each casing 33. In the present embodiment, two lifting metal fittings are attached to the upper side of the two side surfaces of the casing 33 that are in a mutually parallel positional relationship. In the assembly factory of the ship 1, for example, a plurality of lifting brackets 44 are locked to a hook of a chain block, the casing 33 is moved up and down by the chain block, and the casing 33 can be easily assembled on the upper side of the engine room 11. .
　連結される複数のケーシング３３のうち、隣接方向（本実施形態では、左右方向）端部に設けられるケーシング３３、つまり、本実施形態では、左右方向端部に設けられるケーシング３３の外方には、排気ガス浄化装置３１を船舶１の所定の位置（例えば第二甲板上といった甲板上や船舶１の壁面に設けられた固定部材）に据え付ける据付具が設けられる。 Of the plurality of casings 33 to be connected, the casing 33 provided at the end portion in the adjacent direction (in this embodiment, the left-right direction), that is, in the present embodiment, outside the casing 33 provided at the end portion in the left-right direction. A fixture for installing the exhaust gas purification device 31 on a predetermined position of the ship 1 (for example, a fixed member provided on a deck such as the second deck or a wall surface of the ship 1) is provided.
　据付具は、連結具を構成する板状部材３４のうち、両端に設けられる各ケーシング３３からそれぞれ外方側に向けて延びるように形成される延出部４５ａと、延出部４５ａ及びケーシング３３の下部側面とを固定する固定リブ４５ｂと、によって構成される（図５参照）。本実施形態では、連結具を構成する板状部材３４の一部を据付具として利用している。延出部４５ａには図示しない締結穴が複数設けられ、船舶１の所定位置にボルト等の締結具を介して締結することで、排気ガス浄化装置３１は船舶１に固定される。 The fixture includes an extended portion 45a formed so as to extend outward from the respective casings 33 provided at both ends of the plate-like member 34 constituting the coupling tool, and the extended portion 45a and the casing 33. And a fixing rib 45b for fixing the lower side surface of the head (see FIG. 5). In the present embodiment, a part of the plate-like member 34 constituting the coupling tool is used as an installation tool. The extending portion 45 a is provided with a plurality of fastening holes (not shown), and the exhaust gas purification device 31 is fixed to the ship 1 by fastening to a predetermined position of the ship 1 via a fastener such as a bolt.
　以上のように、連結具を介して一体的に設けられる各ケーシング３３を船舶１に据え付けることで、個別に各ケーシング３３を船舶１に据え付ける場合と比べて、据付具は少なくて済むため、据付具の減少分だけ複数の反応器を配置するスペースを減らすことができ、省スペース化を図ることができる。そのため、設置作業及びメンテナンス作業が容易となる。また、連結具を構成する板状部材３４の一部を据付具として利用することができるため、組み付け性を向上させることができる。また、固定リブ４５ｂは、ケーシング３３を配置したさいに、延出部４５ａがたわむことを防止することができる。 As described above, since the casings 33 that are integrally provided via the coupling tool are installed on the ship 1, the number of installation tools can be reduced as compared with the case where each casing 33 is individually installed on the ship 1. The space for arranging a plurality of reactors can be reduced by the reduced amount of the equipment, and the space can be saved. Therefore, installation work and maintenance work become easy. Moreover, since a part of plate-shaped member 34 which comprises a connection tool can be utilized as an installation tool, an assembly property can be improved. Further, the fixing rib 45b can prevent the extending portion 45a from being bent when the casing 33 is disposed.
　以上のように、隣接して設けられる複数の排気流路３２間は、断熱構造を有するように構成されることで、隣接するケーシング３３への放熱による排気の温度低下を防ぐことができる上に、排気ガス浄化装置３１の省スペース化を図ることができ、設置作業及びメンテナンス作業が容易となる。 As described above, the plurality of exhaust flow paths 32 provided adjacent to each other can be configured to have a heat insulating structure, thereby preventing a decrease in exhaust temperature due to heat radiation to the adjacent casing 33. In addition, space saving of the exhaust gas purification device 31 can be achieved, and installation work and maintenance work become easy.
　図６を用いて、第二実施形態の排気ガス浄化装置３１ａについて説明する。
　隣接して設けられる複数のケーシング３３を連結する連結具は、一対のＬ鋼３４ａによって構成される。 The exhaust gas purification device 31a of the second embodiment will be described with reference to FIG.
A connector for connecting a plurality of casings 33 provided adjacent to each other is constituted by a pair of L steels 34a.
　連結具は、複数のケーシング３３の隣接方向（本実施形態では、左右方向）に延びる一対のＬ鋼３４ａによって構成される。一対のＬ鋼３４ａは、各ケーシング３３の前端部及び後端部をそれぞれ支持するように各ケーシング３３の下部に前後に並べて配置され、ボルト等の締結具によって各ケーシング３３に締結される。一対のＬ鋼３４ａの長手方向の端部は、ケーシング３３の外方側にそれぞれ延出されるように形成される。据付具は、一対のＬ鋼３４ａの長手方向端部の延出部と、ケーシング３３の下部側面とを固定する固定リブ４５ｃと、から構成される。つまり、連結具を構成する一対のＬ鋼３４ａの一部を据付具として利用している。 The coupling tool is constituted by a pair of L steels 34a extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction). The pair of L steels 34a are arranged side by side at the bottom of each casing 33 so as to support the front end portion and the rear end portion of each casing 33, and are fastened to each casing 33 by a fastener such as a bolt. The ends in the longitudinal direction of the pair of L steels 34a are formed so as to extend outward of the casing 33, respectively. The fixture is composed of an extension portion at the longitudinal end portion of the pair of L steels 34 a and a fixing rib 45 c that fixes the lower side surface of the casing 33. That is, a part of a pair of L steel 34a which comprises a connection tool is utilized as an installation tool.
　以上の構成において、一対のＬ鋼３４ａの底部を、船舶１の所定の位置にボルト等の締結具を介して締結することで、排気ガス浄化装置３１ａは船舶１に固定される。以上のように、連結具を介して各ケーシング３３を一体的に連結することができ、排気ガス浄化装置３１ａは、上記に示す実施形態の排気ガス浄化装置３１と同様の効果を奏する。なお、本実施形態では、連結具は一対のＬ鋼３４ａによって構成されているが、これに限定されず、例えば、一対のＨ鋼によって構成してもよい。 In the above configuration, the exhaust gas purifying device 31a is fixed to the ship 1 by fastening the bottom portions of the pair of L steels 34a to predetermined positions of the ship 1 via fasteners such as bolts. As described above, the casings 33 can be integrally connected via the connector, and the exhaust gas purification device 31a has the same effect as the exhaust gas purification device 31 of the embodiment described above. In addition, in this embodiment, although the connection tool is comprised by a pair of L steel 34a, it is not limited to this, For example, you may comprise by a pair of H steel.
　図７を用いて、第三実施形態の排気ガス浄化装置３１ｂについて説明する。
　隣接して設けられる複数のケーシング３３を連結する連結具は、隣接するケーシング３３間を連結するＬ鋼３４ｄ及びブラケット３４ｅによって構成される。 The exhaust gas purification device 31b according to the third embodiment will be described with reference to FIG.
A connector for connecting a plurality of adjacent casings 33 is configured by an L steel 34 d and a bracket 34 e that connect the adjacent casings 33.
　中央に設けられるケーシング３３の各隣接面には、Ｌ鋼３４ｄの一側面が溶接固定される。左右に設けられる各ケーシング３３の隣接面には、Ｌ鋼３４ｄの他側面を支持して固定されるブラケット３４ｅが溶接固定される。左右に設けられる各ケーシング３３のブラケット３４ｅに、中央に設けられるケーシング３３のＬ鋼３４ｄの他側面をボルト等の締結具によって締結することで、中央に設けられるケーシング３３が左右に設けられる各ケーシング３３と連結される。 One side surface of the L steel 34d is welded and fixed to each adjacent surface of the casing 33 provided in the center. A bracket 34e that supports and fixes the other side surface of the L steel 34d is welded and fixed to adjacent surfaces of the casings 33 provided on the left and right. Each casing 33 provided in the center is provided on the left and right by fastening the other side surface of the L steel 34d of the casing 33 provided in the center to the bracket 34e of each casing 33 provided on the left and right by a fastener such as a bolt. 33.
　据付具は、各ケーシング３３から外方側に向けて延びるように形成される板状部材４５ｄと、板状部材４５ｄの外方側延出部及びケーシング３３の下部側面とを固定する固定部リブ４５ｅと、によって構成される。板状部材４５ｄの外方側延出部を、船舶１の所定の位置にボルト等の締結具を介して締結することで、排気ガス浄化装置３１ｂは船舶１に固定される。 The fixture includes a plate-like member 45d formed so as to extend outward from each casing 33, an outwardly extending portion of the plate-like member 45d, and a fixing portion rib for fixing the lower side surface of the casing 33. 45e. The exhaust gas purifying device 31 b is fixed to the ship 1 by fastening the outwardly extending portion of the plate-like member 45 d to a predetermined position of the ship 1 via a fastener such as a bolt.
　以上のように、連結具を介して各ケーシング３３を連結して船舶１に据え付けることで、排気ガス浄化装置３１ｂは、上記に示す実施形態の排気ガス浄化装置３１と同様の効果を奏する。 As described above, the exhaust gas purifying device 31b has the same effect as the exhaust gas purifying device 31 of the above-described embodiment by connecting the casings 33 via the connector and installing them on the ship 1.
　図８を用いて、第四実施形態の排気ガス浄化装置３１ｃについて説明する。
　排気ガス浄化装置３１ｃを構成する複数の排気流路３２は、隣接して設けられる。各排気流路３２が形成される各ケーシング３３は、平面視において略逆Ｌ字状となるように隣接して設けられる。各ケーシング３３は、点検窓４３やスートブロワ３７等がケーシング３３の隣接面を除いた側面に設けられように並べて配置される。 The exhaust gas purification device 31c of the fourth embodiment will be described with reference to FIG.
The plurality of exhaust passages 32 constituting the exhaust gas purification device 31c are provided adjacent to each other. The respective casings 33 in which the respective exhaust flow paths 32 are formed are provided adjacent to each other so as to have a substantially inverted L shape in plan view. Each casing 33 is arranged side by side so that the inspection window 43, the soot blower 37, and the like are provided on the side surface excluding the adjacent surface of the casing 33.
　隣接して設けられる複数の排気流路３２間は、断熱構造を有するように構成される。具体的には、各排気流路３２は、各ケーシング３３にそれぞれ設けられるとともに、隣接するケーシング３３は、所定の間隔をあけて設けられる。ここでの、所定の間隔とは、一のケーシング３３と接続される発電用エンジン２０のみが駆動している状態において、一のケーシング３３から隣接する他のケーシング３３への放熱による、排気の温度低下を防ぐことができる間隔を指す。 Between a plurality of exhaust flow paths 32 provided adjacent to each other, a heat insulating structure is formed. Specifically, each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals. Here, the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
　隣接方向において中央のケーシング３３及び左方のケーシング３３は、前側にそれぞれ点検窓４３やスートブロワ３７が設けられるように配置され、後方のケーシング３３は、右側に点検窓４３やスートブロワ３７が設けられるように配置される。 In the adjacent direction, the central casing 33 and the left casing 33 are arranged so that the inspection window 43 and the soot blower 37 are provided on the front side, respectively, and the rear casing 33 is provided with the inspection window 43 and the soot blower 37 on the right side. Placed in.
　各ケーシング３３は、その隣接面を除く側面にスートブロワ３７等が設けられることで、スートブロワ３７等が障害となることなく、容易に各ケーシング３３を所定の間隔をあけて並べて配置することができ、省スペース化を図ることができる。また、点検窓４３が所定の方向にくるように各ケーシング３３を並べて配置することで、各ケーシング３の内部を容易に点検することができ、メンテナンス作業が容易となる。 Each casing 33 is provided with a soot blower 37 or the like on the side surface excluding its adjacent surface, so that the casing 33 can be easily arranged at a predetermined interval without causing the soot blower 37 or the like to become an obstacle. Space can be saved. Further, by arranging the casings 33 side by side so that the inspection window 43 is in a predetermined direction, the inside of each casing 3 can be easily inspected, and maintenance work is facilitated.
　また、排気ガス浄化装置３１ｃの上流側端部と接続される入口側配管３８に設けられる還元剤供給装置やバルブ等も同様に、各ケーシング３３の隣接方向を除いて設けられることで、容易に各ケーシング３３を所定の間隔をあけて設けることができ、省スペース化を図ることができる。 Similarly, the reducing agent supply device, the valve, and the like provided in the inlet side pipe 38 connected to the upstream end of the exhaust gas purification device 31c are also provided except in the adjacent direction of each casing 33, so that Each casing 33 can be provided at a predetermined interval, and space saving can be achieved.
　隣接して設けられる複数のケーシング３３は、連結具によって連結される。連結具は、複数のケーシング３３の隣接方向に延びる板状部材３４ｆによって構成される。板状部材３４ｆには、各ケーシング３３の底部を嵌める孔が形成され、該孔に各ケーシング３３を嵌めこんでステー等を介して固定することで、各ケーシング３３を連結している。連結具は、ケーシング３３の底部を固定する構成としているが、これに限定されず、例えば、各ケーシング３３の上部を固定してもよい。 A plurality of casings 33 provided adjacent to each other are connected by a connector. The connector is constituted by a plate-like member 34 f extending in the adjacent direction of the plurality of casings 33. The plate-like member 34f is formed with holes for fitting the bottoms of the respective casings 33, and the respective casings 33 are coupled by fitting the respective casings 33 into the holes and fixing them through a stay or the like. The connector is configured to fix the bottom portion of the casing 33, but is not limited thereto, and for example, the upper portion of each casing 33 may be fixed.
　連結される複数のケーシング３３のうち、隣接方向端部に設けられるケーシング３３、つまり、本実施形態では、左方のケーシング３３の隣接方向外方（左方）及び後方のケーシングの隣接方向外方（後方）には、排気ガス浄化装置３１ｃを船舶１の所定の位置に据え付ける据付具が設けられる。 Out of the plurality of casings 33 to be connected, the casing 33 provided at the end portion in the adjacent direction, that is, in the present embodiment, the outer side in the adjacent direction (left side) of the left casing 33 and the outer side in the adjacent direction of the rear casing. On the (rear) side, a fixture for installing the exhaust gas purification device 31c at a predetermined position of the ship 1 is provided.
　据付具は、連結具を構成する板状部材３４ｆのうち、両端に設けられる各ケーシング３３からそれぞれ外方側に向けて延びるように形成される延出部４５ｆと、延出部４５ｆ及びケーシング３３の下部側面とを固定する固定リブ４５ｇと、によって構成される。本実施形態では、連結具を構成する板状部材３４ｆの一部を据付具として利用している。延出部４５ｆを船舶１の所定の位置にボルト等の締結具を介して締結することで、排気ガス浄化装置３１ｃは船舶１に固定される。 The fixture includes an extended portion 45f formed so as to extend outward from the respective casings 33 provided at both ends of the plate-like member 34f constituting the connector, and the extended portion 45f and the casing 33. And a fixing rib 45g for fixing the lower side surface of the fixing member. In the present embodiment, a part of the plate-like member 34f constituting the coupling tool is used as an installation tool. The exhaust gas purifying device 31c is fixed to the ship 1 by fastening the extending portion 45f to a predetermined position of the ship 1 via a fastener such as a bolt.
　以上の構成において、排気流路３２は、平面視において、略Ｌ字となるように隣接して設けられているが、排気流路３２は隣接して設けられればよく、その並び方向等は限定されない。連結具を介して各ケーシング３３を連結して船舶１に据え付けることで、排気ガス浄化装置３１ｃは、上記に示す実施形態の排気ガス浄化装置３１と同様の効果を奏する。 In the above configuration, the exhaust flow path 32 is provided adjacently so as to be substantially L-shaped in plan view, but the exhaust flow path 32 may be provided adjacently, and the arrangement direction thereof is limited. Not. By connecting the casings 33 via the couplers and installing them on the ship 1, the exhaust gas purification device 31c has the same effects as the exhaust gas purification device 31 of the embodiment described above.
　図９を用いて、第五実施形態の排気ガス浄化装置３１ｄについて説明する。
　排気ガス浄化装置３１ｄを構成する複数の排気流路３２は、隣接して設けられる。排気ガス浄化装置３１ｄに設けられる複数の排気流路３２は、一のケーシング３３ａに設けられる。各排気流路３２は、一側から他側（本実施形態では、船舶１の左右方向）に沿って設けられる。 The exhaust gas purification device 31d of the fifth embodiment will be described with reference to FIG.
The plurality of exhaust passages 32 constituting the exhaust gas purification device 31d are provided adjacent to each other. The plurality of exhaust passages 32 provided in the exhaust gas purification device 31d are provided in one casing 33a. Each exhaust passage 32 is provided from one side to the other side (in this embodiment, the left-right direction of the ship 1).
　複数の排気流路３２は、一のケーシング３３ａに形成される。ケーシング３３ａは、耐熱金属材料製で略角筒状に形成される。ケーシング３３ａの内部には、隣接する排気流路３２間を仕切る仕切り板４６が設けられる。隣接する排気流路３２間は、断熱構造を有するように構成される。具体的には、ケーシング３３ａに設けられる各排気流路３２は、グラスウール等の断熱材（図９に示す薄墨部参照）を介して所定の間隔をあけて設けられる。ここでの、所定の間隔とは、一の排気流路３２から他の排気流路３２への放熱による排気の温度低下を防ぐことができる間隔を指す。各排気流路３２間に、断熱材が設けられることで、放熱による温度低下を防ぐ構成としている。 The plurality of exhaust passages 32 are formed in one casing 33a. The casing 33a is made of a heat-resistant metal material and is formed in a substantially rectangular tube shape. A partition plate 46 is provided inside the casing 33a to partition between the adjacent exhaust flow paths 32. The adjacent exhaust flow paths 32 are configured to have a heat insulating structure. Specifically, the exhaust passages 32 provided in the casing 33a are provided at predetermined intervals via a heat insulating material such as glass wool (see the thin ink portion shown in FIG. 9). Here, the predetermined interval refers to an interval that can prevent a temperature drop of the exhaust due to heat radiation from one exhaust passage 32 to another exhaust passage 32. A heat insulating material is provided between the exhaust passages 32 to prevent a temperature drop due to heat dissipation.
　据付具は、両端に設けられる各ケーシング３３からそれぞれ外方側に向けて延びるように形成される板状部材４５ｈと、板状部材４５ｈの外方側延出部４５ｉ及びケーシング３３ａの下部側面とを固定する固定リブ４５ｊと、によって構成される。 The fixture includes a plate-like member 45h formed to extend outward from the casings 33 provided at both ends, an outwardly extending portion 45i of the plate-like member 45h, and a lower side surface of the casing 33a. And a fixing rib 45j for fixing.
　以上のように、排気ガス浄化装置３１ｄは、一体的に形成される一のケーシング３３ａに断熱材を介して複数の排気流路３２が設けられることで、各排気流路３２を効率的に隣接して配置することができ、省スペース化を図ることができ、上記に示す実施形態の排気ガス浄化装置３１と同様の効果を奏する。 As described above, the exhaust gas purification device 31d is provided adjacent to each exhaust flow channel 32 by providing a plurality of exhaust flow channels 32 via a heat insulating material in one integrally formed casing 33a. Therefore, the space can be saved, and the same effect as the exhaust gas purification device 31 of the embodiment shown above can be obtained.
　図１０を用いて、第六実施形態の排気ガス浄化装置３１ｅについて説明する。
　排気ガス浄化装置３１ｅは、船舶１に設けられる全ての発電用エンジン２０のうち、一部の発電用エンジン２０毎の排気が流れる複数の排気流路３２が設けられる。本実施形態では、二つの排気流路３２が設けられる。各排気流路３２は個別に形成されるケーシング３３にそれぞれ設けられ、該ケーシング３３は、連結具によって連結される。連結具は、複数のケーシング３３の隣接方向（本実施形態では、左右方向）に延びる板状部材３４ｇによって構成される。 The exhaust gas purification device 31e of the sixth embodiment will be described with reference to FIG.
The exhaust gas purification device 31e is provided with a plurality of exhaust passages 32 through which exhaust for each of the power generation engines 20 among all the power generation engines 20 provided in the ship 1 flows. In the present embodiment, two exhaust passages 32 are provided. Each exhaust passage 32 is provided in a separately formed casing 33, and the casing 33 is connected by a connector. The connector is configured by a plate-like member 34g extending in the adjacent direction of the plurality of casings 33 (in the present embodiment, the left-right direction).
　排気ガス浄化装置３１ｅを構成する複数の排気流路３２は、隣接して設けられる。各排気流路３２が形成される各ケーシング３３は、一側から他側（本実施形態では、船舶１の左右方向）に沿って設けられる。各ケーシング３３は、点検窓４３やスートブロワ３７等が、ケーシング３３の隣接面を除いた側面に設けられるように並べて配置される。本実施形態では、点検窓４３やスートブロワ３７が設けられる側面が前側面となるように並べて配置される。 The plurality of exhaust passages 32 constituting the exhaust gas purification device 31e are provided adjacent to each other. Each casing 33 in which each exhaust passage 32 is formed is provided from one side to the other side (in the present embodiment, the left-right direction of the ship 1). Each casing 33 is arranged side by side so that the inspection window 43, the soot blower 37, and the like are provided on the side surface excluding the adjacent surface of the casing 33. In this embodiment, it arranges side by side so that the side surface in which the inspection window 43 and the soot blower 37 are provided becomes a front side surface.
　隣接して設けられる複数の排気流路３２間は、断熱構造を有するように構成される。具体的には、各排気流路３２は、各ケーシング３３にそれぞれ設けられるとともに、隣接するケーシング３３は、所定の間隔をあけて設けられる。ここでの、所定の間隔とは、一のケーシング３３と接続される発電用エンジン２０のみが駆動している状態において、一のケーシング３３から隣接する他のケーシング３３への放熱による、排気の温度低下を防ぐことができる間隔を指す。 Between a plurality of exhaust flow paths 32 provided adjacent to each other, a heat insulating structure is formed. Specifically, each exhaust passage 32 is provided in each casing 33, and adjacent casings 33 are provided at predetermined intervals. Here, the predetermined interval is the temperature of the exhaust due to heat radiation from one casing 33 to another adjacent casing 33 in a state where only the power generation engine 20 connected to the one casing 33 is driven. The interval that can prevent the drop.
　以上のように、船舶１に設けられる全ての発電用エンジン２０のうち、一部の発電用エンジン２０の排気が流れる各排気流路を隣接して設けるとともに、各排気流路３２間が断熱構造を有するように構成してもよい。 As described above, among all the power generation engines 20 provided in the ship 1, the exhaust passages through which the exhaust of some of the power generation engines 20 flow are provided adjacent to each other, and between the exhaust passages 32 are insulated. You may comprise so that it may have.
　図１１を用いて、第七実施形態の排気ガス浄化装置３１ｆについて説明する。
　排気ガス浄化装置３１ｆは、船舶１に設けられる全ての発電用エンジン２０のうち、複数の発電用エンジン２０毎の排気が流れる複数の排気流路３２が設けられる。本実施形態では、三つの排気流路３２が設けられる。各排気流路３２はケーシング３３・４８にそれぞれ設けられ、該ケーシング３３・４８は、連結具によって連結される。 The exhaust gas purification device 31f of the seventh embodiment will be described with reference to FIG.
The exhaust gas purification device 31f is provided with a plurality of exhaust passages 32 through which exhaust for each of the plurality of power generation engines 20 out of all the power generation engines 20 provided in the ship 1 is provided. In the present embodiment, three exhaust passages 32 are provided. Each exhaust passage 32 is provided in each of the casings 33 and 48, and the casings 33 and 48 are connected by a connector.
   排気ガス浄化装置３１ｆを構成する複数の排気流路３２は、隣接して設けられる。各排気流路３２は、一側から他側に沿って設けられる。本実施形態では、船舶１の左右方向に並べて配置される。 The plurality of exhaust passages 32 constituting the exhaust gas purification device 31f are provided adjacent to each other. Each exhaust passage 32 is provided along the other side from one side. In the present embodiment, the boats 1 are arranged side by side in the left-right direction.
　隣接して設けられる複数の排気流路３２間のうち、少なくとも一つの排気流路３２間は、断熱構造を有さない仕切り板４７によって構成される、本実施形態では、隣接方向における中央の排気流路３２と、その右方に設けられる排気流路３２と、の間は、断熱構造を有さない仕切り板４７によって構成される。具体的には、隣接方向における中央の排気流路３２と、右方に設けられる排気流路３２と、は一のケーシング４８に形成され、該ケーシング４８内において断熱構造を有さない仕切り板４７によって区画される。 Among the plurality of adjacent exhaust flow paths 32, at least one exhaust flow path 32 is configured by a partition plate 47 having no heat insulating structure. A space between the flow path 32 and the exhaust flow path 32 provided on the right side thereof is constituted by a partition plate 47 that does not have a heat insulating structure. Specifically, the central exhaust passage 32 in the adjacent direction and the exhaust passage 32 provided on the right side are formed in one casing 48, and the partition plate 47 having no heat insulation structure in the casing 48. It is divided by.
　仕切り板４７は、隣接方向における中央の排気流路３２と、右方の排気流路３２と、を仕切る部材であればよい。また、本実施形態では、ケーシング４８は隣接方向における中央の排気流路３２と、右方に設けられる排気流路３２と、が一体的に形成されるように構成されているが、これに限らず、例えば、隣接方向における中央の排気流路３２が形成されるケーシングと、右方の排気流路３２が形成されるケーシングと、を個別に形成し、該ケーシング同士を密着するように設けてもよい。 The partition plate 47 may be a member that partitions the central exhaust passage 32 and the right exhaust passage 32 in the adjacent direction. Further, in the present embodiment, the casing 48 is configured such that the central exhaust passage 32 in the adjacent direction and the exhaust passage 32 provided on the right side are integrally formed. For example, a casing in which the central exhaust flow path 32 in the adjacent direction is formed and a casing in which the right exhaust flow path 32 is formed are individually formed so that the casings are in close contact with each other. Also good.
　隣接方向における中央の排気流路３２と、左方の排気流路３２と、の間は、断熱構造を有するように構成される。具体的には、中央に設けられる排気流路３２が形成されるケーシング４８と、左方に設けられる排気流路３２が形成されるケーシング３３と、は所定の間隔あけて設けられる。 A space between the central exhaust passage 32 and the left exhaust passage 32 in the adjacent direction is configured to have a heat insulating structure. Specifically, the casing 48 in which the exhaust passage 32 provided in the center is formed and the casing 33 in which the exhaust passage 32 provided on the left are formed are provided at a predetermined interval.
　複数の発電用エンジン２０を駆動するときは、断熱構造を有さない仕切り板４７によって仕切られる排気流路３２・３２に排気が流れるように構成される。単一の発電用エンジン２０を駆動するときは、その隣接方向端部が断熱構造を有さない仕切り板４７によって仕切られない排気流路３２、つまり、本実施形態では、左方に設けられる排気流路３２に排気が流れるように、左方に設けられる排気流路３２と接続される発電用エンジン２０を駆動する。 When the plurality of power generation engines 20 are driven, the exhaust gas is configured to flow through the exhaust passages 32 and 32 partitioned by the partition plate 47 having no heat insulating structure. When the single power generation engine 20 is driven, the exhaust flow path 32 that is not partitioned by the partition plate 47 whose adjacent direction end portion does not have a heat insulating structure, that is, in the present embodiment, is provided on the left side. The power generation engine 20 connected to the exhaust passage 32 provided on the left side is driven so that the exhaust flows through the passage 32.
　この場合、隣接方向における中央の排気流路３２と、右方の排気流路３２と、に接続される発電用エンジン２０を駆動するさいに、そのどちらか一方のみを単独で駆動することはないように構成されるため、一のケーシング４８に形成される排気流路３２間に断熱構造を設ける必要がない。そのため、隣接方向における中央の排気流路３２と、右方の排気流路３２と、の間のスペースを狭くすることができ、省スペースを図ることができる。 In this case, when driving the power generation engine 20 connected to the central exhaust passage 32 and the right exhaust passage 32 in the adjacent direction, only one of them is not driven alone. Therefore, it is not necessary to provide a heat insulating structure between the exhaust flow paths 32 formed in one casing 48. Therefore, the space between the central exhaust passage 32 and the right exhaust passage 32 in the adjacent direction can be narrowed, and space can be saved.
　以上のように、複数の排気流路３２間のうち、少なくとも一つの排気流路３２間を断熱構造を有さない仕切り板４７で仕切るとともに、複数の発電用エンジン２０を駆動する場合に、仕切り板４７で仕切られる排気流路３２・３２に接続される発電用エンジン２０・２０を駆動することで、排気流路３２への放熱による温度低下を防ぐことができる上に、省スペース化を図ることができる。そのため、設置作業やメンテナンス作業が容易となる。 As described above, among the plurality of exhaust flow paths 32, at least one exhaust flow path 32 is partitioned by the partition plate 47 having no heat insulating structure, and when the plurality of power generation engines 20 are driven, the partition is separated. By driving the power generation engines 20 and 20 connected to the exhaust passages 32 and 32 partitioned by the plate 47, temperature drop due to heat radiation to the exhaust passage 32 can be prevented and space saving can be achieved. be able to. Therefore, installation work and maintenance work become easy.
　本発明は、排気ガス浄化装置に利用可能である。 The present invention can be used for an exhaust gas purification device.
　１　　　船舶
　１２　　主エンジン
　１４　　発電装置
　１９　　ディーゼル発電機
　２０　　発電用エンジン
　２１　　発電機
　２２　　排気管
　３１　　排気ガス浄化装置
　３１ａ　排気ガス浄化装置
　３１ｂ　排気ガス浄化装置
　３１ｃ　排気ガス浄化装置
　３１ｄ　排気ガス浄化装置
　３１ｅ　排気ガス浄化装置
　３１ｆ　排気ガス浄化装置
　３２　　排気流路
　３３　　ケーシング
　３３ａ　ケーシング
　３５　　ＮＯｘ触媒
　４３　　点検窓
　４７　　仕切り板 DESCRIPTION OF SYMBOLS 1 Ship 12 Main engine 14 Power generation device 19 Diesel generator 20 Power generation engine 21 Generator 22 Exhaust pipe 31 Exhaust gas purification device 31a Exhaust gas purification device 31b Exhaust gas purification device 31c Exhaust gas purification device 31d Exhaust gas purification device 31e Exhaust gas Purification device 31f Exhaust gas purification device 32 Exhaust flow path 33 Casing 33a Casing 35 NOx catalyst 43 Inspection window 47 Partition plate

Claims (5)

  1. 　複数のエンジンからそれぞれ排出される排気を浄化する排気ガス浄化装置であって、
    　前記複数のエンジンのそれぞれのエンジンには、排気が流れる排気流路が設けられ、
    　前記排気流路には、触媒が設けられ、
    　複数の前記排気流路では、前記排気流路が隣接して設けられ、
    　前記互いに隣接する排気流路の間には、断熱構造を有する、排気ガス浄化装置。     An exhaust gas purification device for purifying exhaust discharged from a plurality of engines,
    Each of the plurality of engines is provided with an exhaust passage through which exhaust flows.
    A catalyst is provided in the exhaust passage,
    In the plurality of exhaust passages, the exhaust passages are provided adjacent to each other,
    An exhaust gas purification apparatus having a heat insulating structure between the exhaust passages adjacent to each other.
  2. 　請求項１に記載の排気ガス浄化装置であって、
    　前記複数の排気流路は、一のケーシングに設けられる、排気ガス浄化装置。     The exhaust gas purification device according to claim 1,
    The exhaust gas purification apparatus, wherein the plurality of exhaust flow paths are provided in one casing.
  3. 　請求項１に記載の排気ガス浄化装置であって、
    　前記複数の排気流路は、個別に形成されるケーシングにそれぞれ設けられ、前記複数のケーシングは、連結具によってそれぞれが連結される、排気ガス浄化装置。     The exhaust gas purification device according to claim 1,
    The exhaust gas purification apparatus, wherein the plurality of exhaust flow paths are respectively provided in individually formed casings, and the plurality of casings are connected to each other by a connector.
  4. 　複数のエンジンからそれぞれ排出される排気を浄化する排気ガス浄化装置であって、
    　前記複数のエンジンのうちのそれぞれのエンジンには、排気が流れる排気流路が設けられ、
    　前記排気流路には、触媒が設けられ、
    　複数の前記排気流路では、前記排気流路が互いに隣接して設けられ、
    　前記互いに隣接する排気流路のうち少なくとも一組の排気流路の間には、断熱構造を有さない仕切り板によって仕切られ、
    　前記複数のエンジンを駆動するときには、前記仕切り板で仕切られる一組の排気流路の間に排気が流れるように構成される、排気ガス浄化装置。     An exhaust gas purification device for purifying exhaust discharged from a plurality of engines,
    Each engine of the plurality of engines is provided with an exhaust passage through which exhaust flows.
    A catalyst is provided in the exhaust passage,
    In the plurality of exhaust passages, the exhaust passages are provided adjacent to each other,
    Between at least one set of the exhaust channels adjacent to each other, it is partitioned by a partition plate having no heat insulating structure,
    An exhaust gas purification device configured to exhaust gas between a pair of exhaust flow paths partitioned by the partition plate when driving the plurality of engines.
  5. 　請求項１から４の何れか一項に記載の排気ガス浄化装置を備えた船舶。 A ship provided with the exhaust gas purifying device according to any one of claims 1 to 4.
PCT/JP2016/080964 2016-03-29 2016-10-19 Exhaust gas purification apparatus and vessel provided with same WO2017168804A1 (en)

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WO2019101286A1 (en) * 2017-11-21 2019-05-31 Wärtsilä Finland Oy A method of installing an exhaust gas scrubber system of a power plant in a marine vessel and an exhaust gas scrubber system for wet scrubbing of exhaust gas of a power plant in a marine vessel
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