JP2019104482A - Ship desulfurization system and ship - Google Patents

Abstract

To provide a ship desulfurization system capable of suppressing the effects of a problem that spraying of a washing liquid becomes ununiform due to pitching and rolling of the ship.SOLUTION: The ship desulfurization system desulfurizes exhaust gas exhausted from exhaust gas generation equipment onboard a ship, comprises: an absorption tower which defines an internal space having a lengthwise direction and includes an absorption tower main body in which is formed an exhaust gas introduction port at one end in the lengthwise direction in communication with the internal space; an exhaust gas introduction device which introduces exhaust gas exhausted from the exhaust gas generation equipment to the absorption tower main body; and a spraying device which can spray a washing liquid on exhaust gas flowing through the internal space. The spraying device includes a water spray pipe extending through the internal space and a plurality of spray nozzles provided on the spray water pipe spaced apart at a given interval. When a maximum length of the internal space in the lengthwise direction is taken as L, and a maximum width on the internal space in a short direction orthogonal to the lengthwise direction is taken as W, the ratio W:L is more than 1:1.1 but not exceeding 1:6.0.SELECTED DRAWING: Figure 5

Description

  The present disclosure includes a ship desulfurization apparatus, a ship equipped with the ship desulfurization apparatus, a ship-in-one-type desulfurization apparatus, a ship in which a part of a ship structure is formed by the ship-in-one-type desulfurization apparatus, and a ship hull The present invention relates to a method of assembling a desulfurization apparatus to a ship.

  With the recent tightening of exhaust gas regulations for ships, it has become necessary to use fuel oil with a sulfur content of 0.1% or less or alternative measures having an equivalent effect in the emission control sea area (ECA sea area). Furthermore, in 2020, the use of fuel oil with a sulfur content of 0.5% or less, or alternative measures with the same effect, is also required in general sea areas. In the past, for example, ultra-large vessels such as ULCS (Ultra Large Container Ship) have responded by using low-sulfur fuel oil with low sulfur content. It is expected to increase.

The amount of exhaust gas emitted from the main engine of a super large vessel (the amount of exhaust gas at 100% load) is, for example, over 200,000 Nm ³ / h or more. In addition, a plurality of power generating engines and boilers are installed on an ultra-large vessel in order to meet various power demand and the like in the vessel. For this reason, in order to desulfurize a large amount of exhaust gas discharged from the main engine and a plurality of power generating engines and boilers, the desulfurization apparatus mounted on a super large vessel needs an absorption tower having a large passage area. For example, when trying to cope with this with a conventional desulfurization system for a main engine mounted on a relatively small vessel such as a bulk carrier, it becomes necessary to arrange a plurality of absorption towers, which reduces the load when arranging on the ship, or Design restrictions and changes such as ship size expansion may occur.

  Further, the conventional relatively small desulfurizer for the main engine uses a round (circular) absorption tower, and it is also conceivable to enlarge the round absorption tower for an ultra-large vessel. However, since a round absorption tower is more likely to have a dead space when disposed on a ship than a rectangular absorption tower or the like, there arises a problem that the placement efficiency is deteriorated when disposed on a ship.

  Then, in order to solve said problem, it is possible to employ | adopt the square absorption tower with a track record in land-based desulfurization apparatuses, such as a plant installation and a factory, as an absorption tower of the desulfurization apparatus for super large vessels. For example, Patent Document 1 discloses a wet cleaning apparatus for removing contaminants such as particulate matter, harmful gas, acidic compounds, and offensive odor generated in manufacturing processes, industrial processes, commercial processes, etc. One example of a washing apparatus having a washing tank (absorber) is disclosed.

Patent No. 5631985 JP-A-9-239233

  By the way, in many of the rectangular absorption towers used in the desulfurization apparatus for land, the length in the exhaust gas introduction direction in the internal space of the absorption tower is L, and the length in the direction orthogonal to the exhaust gas introduction direction is W The ratio of W to L (W: L) is in the range of 1: 0.2 to 1: 1.0. That is, the planar shape of the absorption tower is formed in a rectangular shape having a short direction along the exhaust gas introduction direction and a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. This is because the gas flow velocity largely differs between the near side (the exhaust gas inlet side) and the back side (the opposite side of the exhaust gas inlet) in the longitudinal direction when formed in a shape having the longitudinal direction along the exhaust gas introduction direction. It is difficult to flow the exhaust gas uniformly in the absorption tower. If the flow of the exhaust gas in the absorption tower becomes uneven, the desulfurization performance in the absorption tower may decrease, for example, due to unevenness in the desulfurization treatment.

  In order to cope with such problems, in the cleaning device of Patent Document 1 described above, an exhaust gas inlet is provided at the upper end of the absorption tower, and the exhaust gas introduced from the exhaust gas inlet extends vertically in the absorption tower The exhaust gas is configured to flow uniformly in the absorption tower by introducing the gas into the gas distribution chamber provided at the lower part of the absorption tower through the exhaust gas duct.

  However, when the absorption tower disclosed in Patent Document 1 is to be diverted to an absorption tower for a very large ship, there are some problems in terms of arrangement constraints as described below.

  First, although the planar shape of the absorption tower disclosed in Patent Document 1 is recognized to be substantially square (W: L = 1: 1), for example, in an ultra-large vessel of a type such as ULCS, the exhaust gas introduction direction In some cases, the absorption tower having a planar shape having a longitudinal direction along the direction is superior in the disposition.

  Second, in the cleaning tank disclosed in Patent Document 1, as described above, an exhaust gas duct extending vertically in the absorption tower and a gas distribution chamber provided in the lower portion of the cleaning tank are formed. There is. For this reason, there is a problem that the volume of the absorber is increased by the provision of the exhaust gas duct and the gas distribution chamber.

  Third, while the absorption tower for ships is often provided to project upward from the upper deck, the main engine, which is the main exhaust gas emission source, is disposed in the lower engine room inside the hull. That is, the absorber is often located above the main engine on board. For this reason, in the absorption tower of Patent Document 1, it is necessary to purposely guide the exhaust gas discharged from the main engine not to the side end of the absorption tower but to the upper end beyond the side end. There is a problem that the extension will be long.

  Patent Document 2 also shows a desulfurization apparatus having a rectangular absorption tower mounted on a ship (FIGS. 3 and 4). However, the absorption tower of this patent document 2 is not mounted on a tanker (main ship) but mounted on a barge towed by the main ship, and there are problems in placement constraints when placing a desulfurization device on the ship (main ship), There is no disclosure of means for solving this.

The present invention was invented under the background art as described above, and the object of at least one embodiment of the present invention is to have excellent placement when placed on a vessel such as a super large vessel. Another object of the present invention is to provide a ship desulfurization apparatus.
Further, an object of at least one embodiment of the present invention is to provide a ship desulfurization apparatus capable of suppressing the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the motion of the ship. .

(1) A ship desulfurization apparatus according to an embodiment of the present invention,
A ship desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship, comprising:
An absorption tower body defining an inner space having a longitudinal direction and having an exhaust gas inlet port communicating with the inner space at one side end in the longitudinal direction;
An exhaust gas introducing device for introducing the exhaust gas discharged from the exhaust gas generating device to the absorber main body;
A spraying device capable of spraying a cleaning solution to the exhaust gas flowing in the internal space;
The spray device includes a water spray pipe extending to the internal space of the absorber body, and a plurality of water spray nozzles disposed at predetermined intervals in the water spray pipe.
When the maximum length of the absorption tower main body in the longitudinal direction of the internal space is L, and the maximum width of the absorption tower main body in the lateral direction orthogonal to the longitudinal direction of the internal space is W, The ratio (W: L) of the maximum width W to the maximum length L is in the range of more than 1: 1.1, and less than 1: 6.0.

  The ship desulfurization apparatus according to the embodiment described in (1) defines an internal space having a longitudinal direction, and an exhaust gas inlet port communicating with the internal space is formed at one side end in the longitudinal direction. An absorption tower including an absorption tower main body is provided. That is, the internal space of the absorber main body is configured to have a longitudinal direction along the exhaust gas introduction direction. For this reason, since a dead space does not produce easily compared with the conventional circular (round) absorption tower, it is excellent in the arrangement nature at the time of arranging in a ship. In addition, for example, the desulfurization device for ships having excellent disposition for a super large vessel of a type such as ULCS (the absorption tower having a planar shape having a longitudinal direction along the exhaust gas introduction direction is superior in disposition) Can be provided. In addition, the risk that exhaust gas is discharged to the outside of the absorption tower without being desulfurized is reduced compared to the case where the internal space of the absorber main body has a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. Can.

  Moreover, according to the embodiment of the above (1), the ratio (W: L) of the maximum width W to the maximum length L of the internal space is in the range of more than 1: 1.1 and 1: 6.0 or less. is there. Thus, by setting the upper limit of the ratio (W: L) of the maximum width W of the internal space to the maximum length L to 1: 6.0, the non-uniformity of the exhaust gas flow in the absorption tower can be reduced. It can be within the practical tolerance range that the person examined.

  Further, the ship desulfurization apparatus according to the embodiment described in the above (1) is internally sprayed by spraying the cleaning liquid flowing through the water spray pipe from each of the plurality of water spray nozzles arranged at predetermined intervals in the water spray pipe. The washing solution can be uniformly dispersed in the space. Therefore, the ship desulfurization apparatus can suppress the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the fluctuation (rolling, pitching, yawing, etc.) of the ship.

(2) Moreover, the ship which concerns on one Embodiment of this invention mounts the ship desulfurization apparatus as described in said (1).

According to at least one embodiment of the present invention, it is possible to provide a ship desulfurization device that is excellent in the disposition when placed on a ship such as a super large ship.
Further, according to at least one embodiment of the present invention, it is possible to provide a ship desulfurization apparatus capable of suppressing the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the motion of the ship.

It is a perspective view showing a vessel concerning one embodiment of the present invention. (A) is a figure which showed the dimension of a 40 foot container, (b) is the figure which expanded and showed the periphery of the steel plate structure in the ship shown in FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which showed the desulfurization apparatus for ships concerning one Embodiment of this invention. It is the perspective view which showed the desulfurization apparatus for ships concerning one Embodiment of this invention from the angle different from FIG. It is the schematic which showed the absorption tower of the desulfurization apparatus for ships concerning one Embodiment of this invention. In the desulfurization apparatus for ships concerning one embodiment of the present invention, it is a figure showing the examination result about the plane shape of the interior space of an absorption tower main part. The desulfurizer for ships concerning one embodiment of the present invention WHEREIN: It is a figure for demonstrating the cross member provided in the storage space of an absorption tower. It is the schematic which showed the absorption tower of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is the graph which showed the relationship between the shape (aspect ratio) of the internal space of the absorber main part in the desulfurization apparatus for ships concerning one embodiment of the present invention, and the desulfurization performance parameter. It is the table | surface which showed the result of having investigated the relationship between the shape (aspect ratio) of the interior space of the absorber main part in the desulfurization apparatus for ships concerning one embodiment of the present invention, and a desulfurization performance parameter. It is a top view for demonstrating the arrangement | positioning conditions of the water spray nozzle in the interior space of an absorption tower main-body part. It is a figure for demonstrating the relationship between the planar shape and shape (aspect ratio L / W) of the internal space of the absorption tower main-body part in the desulfurization apparatus for ships concerning one Embodiment of this invention. It is the schematic which showed the absorption tower of the desulfurization apparatus for ships concerning one Embodiment of this invention, Comprising: It is the figure seen from A direction shown in FIG. It is the schematic which showed the absorption tower of the desulfurization apparatus for ships concerning one Embodiment of this invention, Comprising: An example of the absorption tower (a liquid column, a spray tower, a tray type absorption tower, etc.) which is not equipped with a packed bed is shown. FIG. It is a perspective view (conceptual view) for explaining the filling in one embodiment of the present invention. It is the schematic for demonstrating the anti-corrosion layer in one Embodiment of this invention, and is the schematic which showed the absorption tower of the desulfurization apparatus for ships. It is the schematic which showed the absorption tower of the desulfurization apparatus for ships concerning one Embodiment of this invention, Comprising: It is a figure for demonstrating a wall surface reinforcement member and a partition wall. It is a figure for demonstrating the exhaust gas cooling device of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating the exhaust gas cooling device of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating the washing | cleaning-liquid supply line and bypass line in the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating fixation with the absorption tower and steel plate structure of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating installation on the ship of the absorption tower and steel plate structure of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating the connection of the absorption tower and waste gas introduction pipe | tube of the desulfurization apparatus for ships concerning one Embodiment of this invention. It is a figure for demonstrating the connection of the absorption tower and exhaust gas introduction pipe of the desulfurization apparatus for ships concerning one embodiment of the present invention, (a) is a schematic top view, (b) is a schematic front view is there. It is a perspective view showing a case where a hull integrated desulfurization device concerning one embodiment is assembled to hull structure. It is a perspective view showing a case where a hull integrated desulfurization device concerning one embodiment is assembled to hull structure. It is a top view of a casing containing a hull integrated type desulfurization device concerning one embodiment. It is a schematic diagram which shows the case where the hull integrated desulfurization apparatus which concerns on one Embodiment is assembled to a hull structure. It is a schematic diagram which shows the case where the hull integrated desulfurization apparatus which concerns on one Embodiment is assembled to a hull structure. It is a schematic diagram which shows the case where the hull integrated desulfurization apparatus which concerns on one Embodiment is assembled to a hull structure. (A), (B) and (C) are schematic diagrams which show some hull integrated type desulfurization apparatuses. It is process drawing which shows the assembly | attachment method of the hull integrated type desulfurization apparatus which concerns on one Embodiment. It is a schematic diagram which shows the attachment method to the hull structure of the hull integrated desulfurization apparatus which concerns on one Embodiment.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as the embodiments or shown in the drawings are not intended to limit the scope of the present invention to this, but are merely illustrative. Absent.
For example, a representation representing a relative or absolute arrangement such as “in a direction”, “along a direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” is strictly Not only does it represent such an arrangement, but also represents a state of relative displacement with an angle or distance that allows the same function to be obtained.
For example, expressions that indicate that things such as "identical", "equal" and "homogeneous" are equal states not only represent strictly equal states, but also have tolerances or differences with which the same function can be obtained. It also represents the existing state.
For example, expressions representing shapes such as quadrilateral shapes and cylindrical shapes not only represent shapes such as rectangular shapes and cylindrical shapes in a geometrically strict sense, but also uneven portions and chamfers within the range where the same effect can be obtained. The shape including a part etc. shall also be expressed.
On the other hand, the expressions "comprising", "having", "having", "including" or "having" one component are not exclusive expressions excluding the presence of other components.
Moreover, in the following description, the same code | symbol may be attached | subjected to the same structure and the detailed description may be abbreviate | omitted.

FIG. 1 is a perspective view showing a ship according to an embodiment of the present invention. The ship 1 according to one embodiment of the present invention is, for example, a very large ship in which the amount of exhaust gas of the main engine (the amount of exhaust gas at 100% load) exceeds 200,000 Nm ³ / h. In the illustrated embodiment, the ship 1 is a very large container ship having a container loading volume of 10,000 TEU or more, which is called ULCS (Ultra Large Container Ship).

  As shown in FIG. 1, the ship 1 is a stern side of the ship body 2, a living area 4 provided projecting from the upper deck 3 at a position slightly forward of the center in the bow-stern direction, and the living area 4 And a steel plate structure 6 provided to project from the upper deck 3 at the position of. Here, the steel plate structure 6 is called a chimney or an engine casing. Further, in the hold of the ship body 2, a plurality of horizontal bulkheads 8 extending in the starboard-left direction, which is a direction orthogonal to the bow-stern direction, are provided at a distance from each other. Thus, the ship body 2 is divided into a plurality of areas having a length that can accommodate the 40-foot container 9 along the longitudinal direction of the container in the bow-stern direction as a basic unit.

  FIG. 2A shows the dimensions of the 40-foot container 9. FIG.2 (b) is the figure which expanded and showed the periphery of the steel plate structure in the ship shown in FIG. As shown in FIG. 2 (b), the steel plate structure 6 is provided between a pair of adjacent horizontal partition walls 8A, 8B. An engine room 10 is formed in the interior of the ship main body 2 corresponding to the vertically lower side of the steel plate structure 6. The engine room 10 includes a main engine 12 including a marine diesel engine for applying a propulsive force to the ship 1 and a main engine boiler for driving a main engine turbine, and various thermal demand in the ship 1 and the like. A plurality of auxiliary engines 14 are installed, each of which comprises an auxiliary boiler for meeting the above requirements and an auxiliary engine for meeting the demand for electricity and the like. The main engine 12 and the auxiliary engine 14 correspond to an exhaust gas generator mounted on the ship 1 according to an embodiment of the present invention.

  The steel plate structure 6 is a structure for discharging the exhaust gas discharged from the main engine 12 and the auxiliary engine 14 described above to the outside of the ship 1, and along the right side-left side direction (width direction) of the ship 1 It is formed in the shape of a long cylinder having a longitudinal direction. And, on the inside of the steel plate structure 6, a ship desulfurization device 20 for desulfurizing the exhaust gas discharged from the main engine 12 and the auxiliary engine 14 mounted on the ship 1 is disposed. In some embodiments, the inner width (length in the direction orthogonal to the longitudinal direction) of the steel plate structure 6 is in the range of approximately 3 m to 8 m. On the other hand, the length in the longitudinal direction of the steel plate structure 6 is relatively unrestricted, and can be set, for example, in the range of 5 m to 20 m.

FIG. 3 is a perspective view showing a ship desulfurization apparatus according to an embodiment of the present invention. FIG. 4 is a perspective view showing the ship desulfurization apparatus according to the embodiment of the present invention from an angle different from that of FIG. 3.
As shown in FIG. 3 and FIG. 4, the ship desulfurization apparatus 20 according to the embodiment of the present invention includes the absorption tower 30 including the absorption tower main body 32, the exhaust gas discharged from the main engine 12 and the auxiliary engine 14. And an exhaust gas introducing device 40 for leading to the absorption tower main body 32.

  FIG. 5 is a schematic view showing an absorption tower of the ship desulfurization apparatus according to an embodiment of the present invention. As shown in FIG. 5, the absorption tower 30 includes an absorption tower main body 32, an exhaust gas inlet 34, and an exhaust gas outlet 36. The absorber body 32 defines an internal space 31 having a longitudinal direction in its interior. Further, an exhaust gas inlet 33 communicating with the internal space 31 (lower side internal space 31 b) is formed at one side end 39 a in the longitudinal direction of the absorption tower main body 32. The exhaust gas introduced into the internal space 31 from the exhaust gas inlet 33 flows from the side end 39a on one side to the side end 39b on the other side, and then ascends the internal space 31. It will flow.

  In the illustrated embodiment, a filling layer 35 is formed in the internal space 31 above the lower internal space 31 b to separate the lower internal space 31 b and the upper internal space 31 c. In the filler layer 35, for example, a number of regular fillers are laminated in layers. Further, at a position above the packed bed 35, a spraying device 38 for spraying a cleaning liquid (for example, seawater or fresh water) to the internal space 31 is disposed. Then, the cleaning liquid is dispersed to the exhaust gas passing through the packed bed 35, and the exhaust gas and the cleaning liquid are brought into gas-liquid contact to remove sulfur contained in the exhaust gas.

  In the internal space 31, a mist eliminator 37 is disposed at a position above the upper side internal space 31c to separate the upper side internal space 31c from the outlet side internal space 31d. The mist eliminator 37 is configured to remove moisture from the exhaust gas passing through the mist eliminator 37. Then, the exhaust gas having passed through the mist eliminator 37 is discharged to the outside of the ship 1 from the exhaust gas lead-out portion 36 connected to the top of the absorber main body 32 via the outlet-side internal space 31 d.

  In addition, a storage space 31 a is formed in the absorption tower main body 32 for storing the sprayed cleaning liquid that has been sprayed to the exhaust gas led to the internal space 31. In the illustrated embodiment, the storage space 31 a is formed below the lower side internal space 31 b and below the lower surface of the exhaust gas inlet 33.

  Moreover, as shown in FIG.3 and FIG.4, the desulfurizing apparatus 20 for ships is further provided with the seawater supply apparatus 50 for supplying seawater with respect to the spreading apparatus 38 mentioned above. The seawater supply device 50 includes a drainage dilution pump 52a, a seawater supply pump 54a, a drainage pipe 56, a seawater supply pipe 58, and a seawater discharge pipe 59. The seawater introduced into the interior of the ship body 2 by the seawater supply pump 54 a is supplied to the scattering device 38 through the seawater supply pipe 58. Further, the scrubber drainage discharged from the absorption tower 30 is diluted by the drainage dilution pump 52 a and drained to the outside of the ship 1 via the drainage pipe 56. In the illustrated embodiment, each of the plurality of drainage dilution pumps 52a is connected to the common first seawater suction box 52. Similarly, each of the plurality of seawater supply pumps 54 a is connected to the common second seawater suction box 54.

As described above, the internal space 31 of the absorption tower main body 32 is formed in a planar shape having a longitudinal direction along the introduction direction of the exhaust gas. The planar shape of the internal space 31 of the absorber main body 32 will be described in detail with reference to FIG. In FIG. 6, the symbol L indicates the length (length in the longitudinal direction) of the internal space 31, and the symbol W indicates the width (length in the direction orthogonal to the longitudinal direction) of the internal space 31. Further, a symbol D is a converted diameter of a circular cross section having the same size as the rectangular cross section having the cross section of the length L and the width W.
In the embodiment shown in FIG. 6, the planar shape of the internal space 31 of the absorption tower main body 32 is a pair of longitudinal wall surfaces extending in parallel with each other, and a pair of lateral wall surfaces extending in parallel with each other, In the following description, the rectangular shape defined in the above is taken as an example, but the planar shape of the internal space 31 is not limited to the rectangular shape, and so long as the effects of the present invention can be obtained. , And may be formed in an oval shape or the like.

  FIG. 6 is a view showing the examination result of the planar shape of the internal space of the absorption tower main body in the ship desulfurization apparatus according to one embodiment of the present invention. In the tables shown in (a) to (c) of FIG. 6, “arrangement” means ease of layout when arranging the absorption tower 30 with respect to the ship 1 for each plane shape, The evaluation is made with two items of “drainage property” which means the uniformity of the exhaust gas flow in the internal space 31 of the absorption tower 30.

In the evaluation regarding "arrangeability", thearrangeability was evaluated in four levels of 順 に, 、, ×, x in descending order from the higher one based on the following evaluation criteria. This is because, for example, when the absorption tower 30 is to be disposed in a site having an elongated shape such as the inside of the steel plate structure 6 as the maximum width W in the short direction is smaller than the conversion diameter D It is based on the idea that it is excellent in sex.
(Evaluation criteria)
... ... (W / D) <0.50
○ ... 0.50 ≦ (W / D) <0.75
... ... 0.75 ((W / D) <0.90
× ... 0.90 ≦ (W / D)

FIG. 9 is a graph showing the relationship between the shape (aspect ratio L / W) of the inner space of the absorption tower and the desulfurization performance parameter in the ship desulfurization apparatus according to one embodiment of the present invention. In addition, in order to make the change of data stand out, it represented by double logarithm. FIG. 10 is a table showing the results of examining the relationship between the shape (aspect ratio) of the internal space of the absorber main body and the desulfurization performance parameter in the ship desulfurization apparatus according to one embodiment of the present invention. FIG. 11 is a plan view for explaining the arrangement condition of the water spray nozzle in the internal space of the absorption tower main body.
The relationship between the shape of the internal space 31 of the absorber main body 32 and the drainability was examined using the desulfurization performance parameters defined below.
Desulfurization performance parameter = perimeter ratio α × number of interference nozzles ratio β
α: inverse ratio to reference condition (L / W = 1) with respect to circumference = perimeter under reference condition / perimeter with aspect ratio to be examined β: with reference condition with respect to the number of interference nozzles Ratio = Number of interference nozzles at the aspect ratio under consideration / Number of interference nozzles at reference conditions

  The circumferential length refers to the outer peripheral length of the absorption tower main body 32 in the horizontal cross section. If the cleaning liquid adheres to the wall surface, it will be a loss that does not contribute to desulfurization, so if the circumference is the same in the case of the same cross-sectional area, it will be an inhibiting factor that deteriorates the desulfurization performance. Thus, the perimeter ratio α is defined by the inverse ratio to the reference condition (L / W = 1) because of the inhibition factor.

The interference nozzle refers to a watering nozzle having a watering nozzle adjacent in all directions. That is, as shown in FIG. 11, a plurality of rows of water spray nozzles 71 are arranged in the inner space 31 of the absorber main body 32 along the longitudinal direction and the width direction, and a plurality of water spray nozzles 71 as a whole as a grid. In the case where is disposed, the sprinkler nozzle 71b located inside the range 71A excluding the sprinkler nozzle 71a disposed on the outermost side becomes the above-described interference nozzle.
In the case of the same cross-sectional area, when the number of interference nozzles increases, the number of places where desulfurization liquid jetted between adjacent water spray nozzles interferes (overlaps) increases, which is a promoting factor for improving the desulfurization performance. As such, for the promoting factor, the interference nozzle number ratio β is defined by the ratio to the reference condition (L / W = 1). The number of nozzles was calculated assuming that the nozzles were arranged in a grid using a predetermined nozzle pitch (0.5 m in the present embodiment), and if a fraction was found, it was rounded to an integer.

  As shown in FIG. 9, as the aspect ratio L / W becomes larger than 1 under the same cross-sectional area condition, the perimeter increases and the number of interference nozzles decreases, so the desulfurization performance parameter decreases. From FIG. 9, it can be seen that the desulfurization performance parameter is substantially constant when L / W is 2.0 or less, decreases in the range of 2.0 to 6.0, and significantly decreases in 6.0 or more. Therefore, it was determined that the inflection point was at two places of L / W = 2.0 and 6.0.

In the evaluation regarding "desulfurization property", based on the following evaluation criteria, it evaluated in four steps of (double-circle), (circle), (triangle | delta), and x in an order from the one with the high desulfurization property. This is based on the idea that the higher the uniformity of the exhaust gas flow in the absorption tower 30, the better the desulfurization performance. The uniformity of the exhaust gas flow in the absorber 30 was evaluated based on the above-described examination results based on the following examination conditions. As shown in FIG. 9, when the aspect ratio is 2 or less, the desulfurization performance parameter can be maintained at a substantially constant high level, and the uniformity of the exhaust gas flow in the absorption tower 30 can be maintained in a preferable state. . When the aspect ratio is more than 2 and 3 or less, the desulfurization performance parameter gradually decreases as the aspect ratio increases, but the desulfurization performance parameter can be maintained at a high level. Even when the aspect ratio is greater than 3 and less than 6, the desulfurization performance parameter gradually decreases as the aspect ratio increases, but the desulfurization performance parameter can still be maintained at a relatively high level. On the other hand, as shown in FIG. 9, the desulfurization performance parameter rapidly decreases for the aspect ratio of more than 6, and the uniformity of the exhaust gas flow in the absorption tower 30 demonstrates the required desulfurization performance. It is considered to exceed the above tolerance. Therefore, the upper limit of the aspect ratio was set to 6.
(Evaluation criteria)
... ... W: L = 1: 1.1 or more and 1: 2: or less ○ ... W: L = 1: 2.0 or more and 1: 3: 3.0 or less ... ... W: L = 1: 3.0 or more and 1: 6.0 or less × ... W: L = 1: 6.0 or more (study conditions)
Inlet gas flow velocity = 2 to 20 m / s
Absorption tower flow velocity = 1 to 5 m / s
Watering amount = 30 to 200 m ³ / m ² · h

And "general evaluation" is performed based on the evaluation result with respect to two items of "placement property" and "drainage property" mentioned above. In "Comprehensive evaluation", based on the following evaluation criteria, it evaluated in three steps of "excellent", "good", and "possible" in an order from the higher one of the comprehensive evaluation.
Excellent ... ◎ is one or more items, and △ and X are not included Good ... ○ is two items Allowed ... △ is one or more items and those without X are not possible ... ... × is one or more items

  As shown in FIGS. 6 (a) to 6 (c), the planar shape of the internal space 31 is in the range of W: L = 1: 1.5 or more and 1: 2.0 or less in the comprehensive evaluation “ Excellent. The evaluations of “placement property” and “desulfurization property” have a trade-off relationship with each other, but setting W: L in this range provides an excellent balance in both the placement property and the drainage property. It is possible to provide a good ship desulfurization apparatus 20.

Next, those in the range of W: L = 1: 2.0 and 1: 3.0 or less were evaluated as “good” in the overall evaluation. Then, the thing of the range of W: L = 1: 3.0 or more and 1: 6.0 or less was evaluated as "OK" by comprehensive evaluation.
In addition, although the thing of W: L = 1: 1.1 or less is excellent in "desulfurization property", since it is inferior to "placement property", it was evaluated as "impossible." Further, as described above, W: L = 1: 6.0 or more can not ensure the uniformity of the exhaust gas flow in the absorption tower 30, and is inferior to "desulfurization", so "impossible" It was evaluated.

  As described above, the ship desulfurization apparatus 20 according to the embodiment of the present invention defines the inner space 31 having the longitudinal direction, and the inner space 31 (the lower inner space at the one side end 39a in the longitudinal direction An absorption tower 30 is provided that includes an absorption tower main body 32 in which an exhaust gas inlet 33 communicating with 31 b) is formed. That is, the internal space 31 of the absorber main body 32 is configured to have a longitudinal direction along the exhaust gas introduction direction. For this reason, since a dead space does not produce easily compared with the conventional circular (round) absorption tower, it is excellent in the arrangement nature at the time of arranging in vessel 1. FIG. In addition, the desulfurizing apparatus 20 for ships is provided with an excellent disposition with respect to the ship 1 such as the above-described ultra-large container ship, in the absorption tower 30 having a planar shape having a longitudinal direction along the exhaust gas introduction direction. can do. In addition, the risk that exhaust gas is discharged to the outside of the absorption tower without being desulfurized is reduced compared to the case where the internal space of the absorber main body has a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. Can.

  Further, according to the above-described ship desulfurization apparatus 20 according to the embodiment of the present invention, the ratio (W: L) of the maximum width W to the maximum length L of the internal space 31 is more than 1: 1.1, and It is in the range of 1: 6.0 or less. Thus, by setting the upper limit of the ratio (W: L) of the maximum width W to the maximum length L of the internal space 31 to 1: 6.0, the non-uniformity of the exhaust gas flow in the absorber 30 can be It can be within the practical tolerance that the present inventor has examined.

In some embodiments, as shown in FIG. 6 described above, in the ship desulfurization apparatus 20, the ratio (W: L) of the maximum width W to the maximum length L of the internal space 31 is 1: 1.5. It is in the range of more than 1: 2.0.
According to such an embodiment, as described above, it is possible to provide a well-balanced vessel desulfurization apparatus 20 that is particularly excellent in the disposition and the drainage.

In some embodiments, as shown in FIGS. 1 to 4 and the like described above, the absorption tower 30 is a ship so that the longitudinal direction of the internal space 31 of the absorption tower main body 32 is along the width direction of the ship 1. It will be mounted on one.
According to such an embodiment, the desulfurization for ships is excellent in the disposition of the absorption tower 30 having the longitudinal direction along the width direction of the ship 1 with respect to the ship 1 such as the super-large container ship described above. An apparatus 20 can be provided.

  Moreover, according to such an embodiment, since the absorption tower main body 32 can be configured to have a longitudinal direction along the width direction of the vessel 1, the longitudinal direction along the bow-stern direction of the vessel 1 Since the bending stress which acts on an absorption tower can be made small at the time of rolling (rolling) of ship 1 compared with the absorption tower which has, it can be considered as absorption tower 30 which has high resistance to rolling.

  In some embodiments, as shown in FIG. 1 to FIG. 4 and the like described above, the above-described vessel 1 emits the exhaust gas discharged from the exhaust gas generator (main engine 12 and auxiliary engine 14) to the outside of the vessel 1. The steel plate structure 6 is a steel plate structure 6 to be discharged, and is formed in a long cylindrical shape having a longitudinal direction along the width direction of the ship 1. And the absorption tower 30 is arrange | positioned inside the steel plate structure 6. As shown in FIG.

  In the illustrated embodiment, the planar shape of the steel plate structure 6 is formed in a rectangular shape. Moreover, in some embodiments, the planar shape of the steel plate structure 6 may be formed in a rectangular shape having a longitudinal direction, an elliptical shape, an oval shape, or the like.

  According to such an embodiment, by arranging the absorption tower 30 inside the long cylindrical steel plate structure 6 having the longitudinal direction along the width direction of the ship 1, various other elements mounted on the ship 1 can be obtained. It can minimize the impact on the layout plan of equipment etc. Therefore, retrofit to the existing ship 1 is facilitated. Further, by disposing the absorption tower 30 inside the steel plate structure 6, for example, compared with the case where the absorption tower 30 is disposed inside the vessel 1 such as in the engine room 10, the installation workability and maintainability are excellent. ing.

  In some embodiments, as shown in FIG. 3 and FIG. 4, heat energy is recovered from the exhaust gas discharged from the exhaust gas generator (main engine 12) inside the steel plate structure 6 described above. An exhaust heat recovery device 60 is disposed. And the absorption tower 30 is arrange | positioned along with the exhaust heat recovery apparatus 60 and the width direction of the ship 1 side by side.

  In the illustrated embodiment, the exhaust heat recovery device 60 comprises an exhaust gas economizer that generates steam by the thermal energy recovered from the exhaust gas. An exhaust gas inflow pipe 45 through which exhaust gas discharged from the main engine 12 flows is connected to the lower part of the exhaust heat recovery apparatus 60, and an exhaust gas discharge pipe 43 is connected to the upper part thereof. The exhaust gas introduction pipe 42 described later branches from the exhaust gas discharge pipe 43 to introduce the exhaust gas into the absorption tower 30. The exhaust gas inflow pipe 45, the exhaust gas discharge pipe 43, and the exhaust gas introduction pipe 42 are parts of the exhaust gas introduction device 40 for guiding the exhaust gas discharged from the main engine 12 and the auxiliary engine 14 described above to the absorber main body 32. Make up the department.

  Further, in the illustrated embodiment, the exhaust heat recovery device 60 is configured to have a longitudinal direction along the width direction of the vessel 1 as in the absorption tower main body 32. Moreover, the internal space is formed in rectangular shape in the horizontal cross section.

  According to such an embodiment, the exhaust heat recovery device 60 and the absorption tower 30 are arranged by arranging the absorption tower 30 and the exhaust heat recovery device 60 inside the steel plate structure 6 along the width direction of the ship 1. The exhaust gas introduction device 40 can be configured in a simple manner as compared to the case where the and are disposed at mutually separated places. Moreover, since the exhaust heat recovery device 60 is formed in a rectangular shape having the longitudinal direction along the width direction of the ship 1, the exhaust heat recovery device 60 is disposed inside the steel plate structure 6 having the longitudinal direction along the width direction of the ship 1 Dead space does not occur easily and can be arranged efficiently.

  In some embodiments, as shown in FIGS. 3 to 5 described above, the absorption tower 30 has one end 34 a connected to the exhaust gas inlet 33 of the absorption tower main body 32 and the other end 34 a It further includes an exhaust gas introducing portion 34 extending upward toward the end 34 b.

  In the illustrated embodiment, the exhaust gas inlet 34 has a rectangular cross section, and the exhaust gas inlet 33 is also formed in a rectangular shape. The exhaust gas introducing portion 34 includes a slant portion 34A extending obliquely upward from the exhaust gas inlet 33 of the absorption tower main body 32, and a vertical portion 34B extending upward along the vertical direction from the end of the slant portion 34A. And. Then, an exhaust gas introduction pipe 42 described later is connected to an end of the vertical portion 34B (the other end 34b of the exhaust gas introduction portion 34).

  According to such an embodiment, by connecting the exhaust gas introduction line (exhaust gas introduction pipe 42) to the other end 34b of the exhaust gas introduction part 34, the absorption tower disposed in the narrow space inside the steel plate structure 6 The exhaust gas can be introduced to 30.

  In some embodiments, as shown in FIG. 3 to FIG. 5 described above, the exhaust gas introducing device 40 described above moves from the exhaust heat recovery device 60 side toward the other end 34 b of the exhaust gas introducing portion 34 The exhaust gas introducing pipe 42 extending along the width direction of the pipe and the exhaust gas introducing pipe 42 are connected to introduce the exhaust gas discharged from the auxiliary engine 14 to the absorption tower main body 32 through the exhaust gas introducing pipe 42 And exhaust gas introduction pipes 44a to 44d for auxiliary equipment of the

  In the illustrated embodiment, one end side of the exhaust gas introduction pipe 42 is connected to the exhaust gas discharge pipe 43 described above, and the other end side is connected to the other end 34 b of the exhaust gas introduction portion 34 described above. The exhaust gas introduction pipe 42 extends in the horizontal direction on the inside of the steel plate structure 6.

  Further, in the illustrated embodiment, on the downstream side of the exhaust gas discharge pipe 43, an exhaust gas chimney portion 46 extending upward from the inside of the steel plate structure 6 via the exhaust gas damper 47, and the exhaust gas introduction pipe 42 Is connected. Then, for example, when the exhaust gas generating apparatus such as the main engine 12 and the auxiliary engine 14 is stopped, the exhaust gas damper 47 opens the flow passage from the exhaust gas discharge pipe 43 to the exhaust gas chimney 46 while exhaust gas from the exhaust gas discharge pipe 43 The flow passage leading to the introduction pipe 42 is closed. In addition, for example, during operation of the exhaust gas generating apparatus such as the main engine 12 and the auxiliary engine 14, the exhaust gas damper 47 opens the flow passage from the exhaust gas discharge pipe 43 to the exhaust gas introduction pipe 42 while The flow passage leading to the exhaust gas chimney 46 is closed.

  Further, in the illustrated embodiment, a plurality of auxiliary equipment exhaust gas introduction pipes 44a to 44d through which the exhaust gas discharged from the auxiliary engine 14 flows are connected to the exhaust gas introduction pipe 42. In addition, a plurality of auxiliary exhaust gas exhaust pipes 48a to 48d are connected to each of the plurality of auxiliary exhaust gas introduction pipes 44a to 44d via an auxiliary exhaust gas damper (not shown). Then, for example, when the auxiliary engine 14 is stopped, the exhaust gas damper (not shown) opens the flow paths respectively communicating from the plurality of auxiliary gas introduction pipes 44a to 44d to the plurality of auxiliary gas discharge pipes 48a to 48d. On the other hand, the flow passage from each of the plurality of auxiliary gas introducing pipes 44a to 44d to the exhaust gas introducing pipe 42 is closed. Further, for example, when the auxiliary engine 14 is operated, while the flow paths leading from each of the plurality of auxiliary gas exhaust gas introduction pipes 44a to 44d to the exhaust gas introduction pipe 42 are opened by the exhaust gas damper (not shown) The respective flow paths leading from each of the machine exhaust gas introduction pipes 44a to 44d to the plurality of auxiliary machine exhaust gas discharge pipes 48a to 48d are closed.

  According to such an embodiment, the exhaust gas discharged from the main engine 12 and the auxiliary engine 14 can be introduced into the absorption tower 30 disposed in the narrow space inside the steel plate structure 6.

  In some embodiments, as shown in FIG. 11 described above, the absorption tower main body 32 includes a pair of longitudinal wall surfaces 32 a and 32 b extending in parallel to each other along the longitudinal direction of the internal space 31, and the internal space And 31 includes a pair of short wall surfaces 32c, 32d extending parallel to one another along the short direction of 31.

  According to such an embodiment, the planar shape of the internal space 31 of the absorption tower main body 32 is formed in a rectangular shape defined by the pair of longitudinal wall surfaces 32a and 32b and the pair of lateral wall surfaces 32c and 32d. Be done. Under the present circumstances, the thing by which R process is given to the corner | angular part of a rectangle, and the thing to which the hunt process is given are contained in the rectangular shape in this embodiment. Since the absorber main body 32 having such a rectangular inner space 31 is less likely to produce a dead space when arranged in the ship, it is excellent in arrangement efficiency in arranging the ship in the ship.

FIG. 7 is a view for explaining a crossing member provided in the storage space of the absorption tower in the ship desulfurization apparatus according to the embodiment of the present invention.
In some embodiments, as shown in FIG. 5 described above, the absorption tower main body 32 includes a storage space 31 a in which the sprayed cleaning liquid that has been sprayed to the exhaust gas led to the internal space 31 is stored. Is formed. And as shown in FIG. 7, while the absorber main part 32 connects a pair of longitudinal wall surfaces 32a and 32b (refer FIG. 11), the storage space 31a is traversed along the transversal direction of the internal space 31. And a transverse member 70.

  According to such an embodiment, when a sloshing occurs in which the surface of the cleaning liquid stored in the storage space 31a is largely undulated due to the lateral movement of the ship 1, the cross member 70 causes the liquid surface to swing. It can be suppressed. Moreover, the strength of the absorber main body 32 having the rectangular internal space 31 can also be improved by providing the cross member 70 connecting the pair of longitudinal wall surfaces 32a and 32b.

In some embodiments, as shown in FIG. 7 (a), the cross member 70 described above comprises a cross beam member 70A having an elongated shape.
In the illustrated embodiment, the cross beam member 70A is made of, for example, an H-shaped steel having an H-shaped cross section, and is vertically spaced at substantially the center position of the internal space 31 with multiple steps (three steps). is set up. Also, in some embodiments, the cross beam member 70A may be a beam member having an I shape, an L shape, a T shape, and a tubular cross section.

  According to such an embodiment, the above-described sloshing suppression effect and the reinforcing effect of the absorption tower main body 32 can be realized by the cross beam member 70A having a long shape. Moreover, according to such an embodiment, the reinforcing effect on the absorber main body 32 is particularly excellent.

In some embodiments, as shown in FIG. 7 (b), the cross member 70 described above is made of a scissor plate member 70B having a flat plate shape.
In the illustrated embodiment, the weir plate member 70B is made of a non-porous plate in which no hole is formed in the plate surface, and is installed substantially at the center of the internal space 31 in the longitudinal direction. In addition, the perforated plate member 70B may be a porous plate in which a plurality of holes are formed in the plate surface.

  According to such an embodiment, the above-described sloshing suppression effect and the reinforcing effect of the absorption tower main body 32 can be realized by the weir plate member 70B having a flat plate shape. Moreover, according to such an embodiment, the suppression effect of the sloshing is particularly excellent.

  Further, although not particularly shown, the above-mentioned cross member 70 may include both the cross beam member 70A and the weir plate member 70B.

  In some embodiments, as shown in FIG. 5 described above, the ship desulfurization apparatus 20 includes a spraying device 38 for spraying the cleaning liquid to the exhaust gas led to the internal space 31 of the absorption tower main body 32. (38A) is further provided. The spray device 38A includes a longitudinal water spray pipe 38a1 extending in parallel to each of the pair of longitudinal wall surfaces 32a and 32b (see FIG. 11) in the internal space 31 of the absorption tower main body 32, And a plurality of water spray nozzles 38a2 provided in the water pipe 38a1.

  In some embodiments, one longitudinal water spray pipe 38a1 may be provided at a substantially central position in the lateral direction of the internal space 31. In some embodiments, a plurality of longitudinal water spray pipes 38a1 may be provided at equal intervals in the short direction of the internal space 31.

  According to such an embodiment, the distance from each of the plurality of water spray nozzles 38a2 provided in the same longitudinal water spray pipe 38a1 to the longitudinal wall surfaces 32a and 32b can be made constant. As a result, since the cleaning liquid can be dispersed uniformly in the internal space 31, it is possible to suppress the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the motion (rolling, pitching, yawing, etc.) of the ship 1. it can.

  FIG. 8 is a schematic view showing an absorption tower of the ship desulfurization apparatus according to an embodiment of the present invention. The absorption tower 30 shown in FIG. 8 differs from the absorption tower 30 shown in FIG. 5 described above only in the configuration of the scattering device 38. Therefore, the same reference numeral is given to the same configuration, and the description thereof is omitted.

  In some embodiments, as shown in FIG. 8, the ship desulfurization apparatus 20 includes a sprayer 38 (38B) for spraying the cleaning liquid to the exhaust gas led to the internal space 31 of the absorber body 32. Further). And, in the internal space 31 of the absorption tower main body 32, the scattering device 38B extends in parallel to each of the pair of short wall surfaces 32c, 32d (see FIG. 11), and is disposed at equal intervals. A short direction water spray pipe 38b1 and at least one water spray nozzle 38b2 provided in each of the plurality of short direction water spray pipes 38b1 are provided.

  In some embodiments, a plurality of water spray nozzles 38 b 2 may be arranged at equal intervals in each of the plurality of short direction water spray pipes 38 b 1. Also, in some embodiments, the installation positions of the water spray nozzles 38b2 disposed in each of the adjacent short direction water spray pipes 38b1 may be offset so as not to overlap in the short direction. In some embodiments, the plurality of water spray nozzles 38b2 arranged in the plurality of short direction water spray pipes 38b1 may be arranged in a staggered manner in plan view.

  According to such an embodiment, it is possible to set the spread area of the water spray nozzle 38b2 provided in each of the plurality of short direction water spray pipes 38b1 equally. As a result, since the cleaning liquid can be dispersed uniformly in the internal space 31, it is possible to suppress the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the motion (rolling, pitching, yawing, etc.) of the ship 1. it can.

(Aspect ratio)
As described above, the planar shape of the internal space 31 is not limited to the rectangular shape, and may be formed in a rectangular shape having a longitudinal direction, an elliptical shape, or the like as long as the effects of the present invention are exhibited. It is a thing.
FIG. 12 is a view for explaining the relationship between the planar shape and the shape (aspect ratio L / W) of the internal space of the absorption tower main body in the ship desulfurization apparatus according to one embodiment of the present invention. As shown in FIGS. 12 (a) to 12 (c), in some embodiments, the internal space 31 of the absorption tower main body 32 includes an arc shape in at least a part of the planar shape. More specifically, in some embodiments, as shown in FIG. 12A, a pair of short wall surfaces extending parallel to each other and a pair of ends connecting the short wall surfaces are connected to each other. It is formed in the substantially rectangular shape defined by the circular arc shaped wall surface. In some other embodiments, as shown in FIG. 12 (b), the internal space 31 of the absorber main body 32 is formed in an elliptical shape. In some other embodiments, as shown in FIG. 12C, a pair of longitudinal wall surfaces parallel to each other and a pair of arc-shaped wall surfaces connecting the ends of the pair of longitudinal wall surfaces are used. It is formed in an oblong shape to be defined.

  According to the above configuration, the effects of the present invention described above can be achieved by providing the configurations in the above-described embodiments. For example, since the internal space of the absorber main body is configured to have a longitudinal direction along the exhaust gas introduction direction, dead space is less likely to occur compared to a conventional round (circular) absorber. It has excellent placement when placed on a ship. In addition, for example, the desulfurization device for ships having excellent disposition for a super large vessel of a type such as ULCS (the absorption tower having a planar shape having a longitudinal direction along the exhaust gas introduction direction is superior in disposition) Can be provided. In addition, the risk that exhaust gas is discharged to the outside of the absorption tower without being desulfurized is reduced compared to the case where the internal space of the absorber main body has a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. Can.

  And, by setting the upper limit of the ratio (W: L) of the maximum width W to the maximum length L of the internal space to 1: 6.0, the inventor of the present invention can measure the non-uniformity of the exhaust gas flow in the absorption tower. It can be within the practical allowable range of the examined point.

  Furthermore, according to the above configuration, the internal space 31 of the absorption tower main body portion 32 includes a circular arc shape in at least a part of the planar shape, so that the absorption tower main body portion 32 includes the circular arc shape of the internal space 31 Since it is possible to provide a space that can be used, such as passing a pipe, in a portion corresponding to the outside of the above, the layout can be improved.

(Material)
Since the ship desulfurization apparatus 20 is exposed to the outside, the outer wall surface may be rusted or corroded by sea breeze, rain water, or the like. Further, as described above, when seawater is used as the cleaning liquid, the inner wall surface defining the inner space 31 and the like of the absorption tower 30 and the spray device 38 may rust or corrode. Moreover, since the ship desulfurization apparatus 20 is attached to the ship 1, it is necessary to consider weight, processability, durability and maintainability.

In some embodiments, the walls (including the longitudinal walls 32a and 32b, and the short walls 32c and 32d) of the absorption tower 30 (including the absorption tower main body 32, the exhaust gas inlet 34 and the exhaust gas outlet 36); The material of the sprinkler tube 38c1 (including the longitudinal direction sprinkler tube 38a1 and the short direction sprinkler tube 38b1) and the sprinkler nozzle 38c2 (including the sprinkler nozzles 38a2 and 38b2) of the spraying device 38 is, for example, carbon steel such as SS400 (ordinary steel) It is. And the anticorrosion coating by anticorrosive paint is given to the wall surface of absorption tower 30, and the sprinkling pipe of sprinkling device 38, and the inside and the outside of a sprinkling nozzle. In this case, since carbon steel is used in the absorption tower 30 and the scattering device 38, the processability is excellent, and the anticorrosion coating with the anticorrosive paint is applied, so the corrosion resistance is excellent.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some other embodiments, the walls of the absorption tower 30, the water pipe of the spray device 38, and the inner and outer surfaces of the water spray nozzle are provided with an anti-corrosion lining such as a resin lining or a flake glass lining. Here, for example, FRP is used as the resin used for the resin lining. In this case, the absorption tower 30 and the spraying device 38 are excellent in corrosion resistance since they have an anticorrosion lining.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some other embodiments, the wall surface of the absorption tower 30 and the water spray pipe and water spray nozzle of the spray device 38 are, for example, highly corrosion resistant stainless steel (stainless steel) such as SUS316L. In this case, the absorption tower 30 and the scattering device 38 are excellent in processability and corrosion resistance because high corrosion resistance stainless steel is used, and when an anticorrosion coating or an anticorrosion lining with an anticorrosion paint is applied. In comparison, the manufacturing time can be shortened and the durability and the maintainability are excellent.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some other embodiments, the material of at least a portion of the absorption tower main body 32 and the exhaust gas outlet 36 located above the absorption tower 30 is FRP (fiber reinforced plastic). In this case, at least a part of the absorption tower main body 32 and the exhaust gas lead-out portion 36 located above the absorption tower 30 are excellent in processability and corrosion resistance since FRP is used, and corrosion resistance The production time can be shortened, and the durability and the maintainability are excellent, as compared with the case where an anticorrosion film or an anticorrosion lining is applied by a paint. And it can be made lightweight compared with the case where carbon steel or stainless steel is used. In addition, the weight of the portion with a small load above the absorption tower 30 can be reduced in weight, so that the center of gravity of the absorption tower 30 can be at a low position, so that the absorption tower 30 has high resistance to rolling. Can.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

(The tower top)
As described above, when the planar shape of the absorption tower is formed in a shape having a longitudinal direction along the exhaust gas introduction direction, the front side (exhaust gas inlet side) and the back side (opposite to the exhaust gas introduction port) in the longitudinal direction The gas flow velocity largely differs between the two), and it becomes difficult to flow the exhaust gas uniformly in the absorption tower, and there is a possibility that the flow of the exhaust gas in the absorption tower becomes uneven.

  FIG. 13 is a schematic view showing an absorption tower of the ship desulfurization apparatus according to the embodiment of the present invention, as viewed from the direction A shown in FIG. As shown in FIG. 13, in some embodiments, the absorption tower 30 is an internal space confirmation device for confirming the dispersion state of the cleaning liquid by the dispersion device 38 described above, the flow of exhaust gas in the internal space 31, and the like. Contains 80.

  As shown in FIG. 13, the internal space confirmation device 80 includes a light transmitting visual recognition window 80A that allows the inside of the internal space 31 to be visible from the outside of the absorption tower 30 (the absorption tower main body 32). The viewing window 80A has a light transmitting member having a light transmitting property such as a glass surface, for example, and is provided at a height position where the upper end (top end) of the cleaning liquid sprayed by the spraying device 38 can be confirmed. More specifically, as shown in FIG. 13, the viewing window 80A is provided at a height position below the mist eliminator 37 and above the spraying device 38 at the other side end 39b. In some embodiments, as shown in FIG. 13, one viewing window 80A is provided at a substantially central position in the width direction of the other side end 39b. In some embodiments, a plurality of viewing windows 80A are provided at equal intervals in the width direction of the other side end 39b.

  In the absorption tower 30 provided with the packed bed 35 described above, the upper end (apex) of the cleaning liquid sprayed by the spraying device 38 is located about 1 m above the watering nozzle 38c2 (including the watering nozzles 38a2 and 38b2) of the spraying device 38. positioned. Moreover, in the absorption tower 30 which is not provided with the packed bed 35 as shown in FIG. 15 mentioned later, it is located about 10 m up from the water spray nozzle 38c2 of the spraying apparatus 38 at maximum. In addition, in the absorption tower that does not include the packed bed 35, there is also a sprayer having a water spray nozzle 38c2 installed downward, and one that sprays or disperses gas and liquid using trays. The invention according to some embodiments described above and some embodiments to be described later can be applied to an absorption tower that does not include these packed beds 35. In some embodiments, the viewing window 80A is disposed at substantially the same height as the upper end (top end) of the cleaning solution. Further, in some other embodiments, as shown in FIG. 15, the viewing window 80A is closer to the back side (opposite side to the exhaust gas inlet) of the side end 39c in the short side direction of the absorber main body 32. Provided at the position of

  According to the above configuration, the absorption tower 30 includes the internal space confirmation device 80 (visual recognition window 80A) to confirm the dispersion state of the cleaning liquid by the dispersion device 38, the flow of exhaust gas inside the internal space 31, etc. Can. Then, when the spraying condition by the spraying device 38 is poor, the spraying condition by the spraying device 38 can be improved by performing processing such as washing of the water spray nozzle 38 c 2 of the spray device 38. Further, by providing the internal space confirmation device 80 (visual window 80A) at a position closer to the back side (opposite side of the exhaust gas inlet) of the other side end 39b in the longitudinal direction and the side end 39c in the shorter direction, It is possible to confirm the flow of exhaust gas on the opposite side to the exhaust gas inlet, which is difficult to check with the internal space confirmation device 80 (visual window 80A) provided on the exhaust gas inlet side.

Moreover, the absorption tower 30 can confirm the angle of the washing | cleaning liquid sprayed from the watering nozzle 38c2 of the spraying apparatus 38 by including the internal space confirmation apparatus 80 (visual recognition window 80A), The condition of sloshing from the angle of the washing | cleaning liquid Can understand. Further, in some other embodiments, the angle of the cleaning liquid can be easily confirmed by providing a mark such as a straight line extending along the vertical direction or the horizontal direction on the light transmitting member of the viewing window 80A. it can. Moreover, the visual recognition window 80A can be reinforced by using the above-mentioned mark as a metal wire or the like.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the internal space confirmation device 80 (visual window 80A) may be used for other applications other than confirmation of the spread condition of the spreader 38. For example, the visual recognition window 80A is provided on the exhaust gas inlet side and used to confirm the flow of exhaust gas on the exhaust gas inlet side, or the visual recognition window 80A is located at a height near the liquid surface of the storage space 31a where the cleaning liquid is stored. You may provide and use for confirming the storage space 31a.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  FIG. 14 is a schematic view showing an absorption tower of a ship desulfurization apparatus according to an embodiment of the present invention, which does not have a packed bed (liquid column, spray tower, tray type absorption tower, etc.) It is the figure which showed an example. In some embodiments, the above-described vessel desulfurization apparatus 20 includes an absorption tower 30 including the absorption tower main body 32 described above and the viewing window 80A described above, as shown in FIGS. In this case, the absorption tower 30 is configured such that the exhaust gas flows in the internal space 31, and the light transmittance of the internal space 31 can be viewed from the outside of the absorption tower main body 32. And windows 80A. In the ship desulfurization apparatus 20 provided with such an absorption tower 30, a worker or the like can confirm the flow of the exhaust gas flowing through the internal space 31 and the like through the viewing window 80A.

In some embodiments, as shown in FIGS. 13 and 14, in the ship desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 and the viewing window 80A described above, the internal space of the absorption tower main body 32 31 has a longitudinal direction. The above-described absorber main body 32 has the above-described exhaust gas inlet 33 communicating with the internal space 31 at one end of the internal space 31 in the longitudinal direction. Furthermore, the viewing window 80A described above is provided on the other side of the internal space 31 in the longitudinal direction. Here, the “other side” means a side farther from one side than the center in the longitudinal direction of the internal space 31.
In the embodiment shown in FIG. 13, one viewing window 80A is provided at a substantially central position in the width direction of the other side end 39b. In some other embodiments, a plurality of viewing windows 80A are provided at equal intervals in the width direction of the other side end 39b.
In the embodiment shown in FIG. 14, the viewing window 80A is provided at a position close to the back side (opposite side of the exhaust gas inlet) of the side end 39c in the short side direction of the absorption tower main body 32.

  If the internal space 31 has a longitudinal direction, the gas flow velocity greatly differs between the exhaust gas inlet 33 and the side opposite to the exhaust gas inlet 33, and the flow of exhaust gas in the absorption tower 30 is uneven. There is a risk of According to the above configuration, the absorption tower main body 32 has the exhaust gas inlet 33 communicating with the internal space 31 at one end of the internal space 31 in the longitudinal direction. And visual recognition window 80A is closer to the back side (the opposite side to the exhaust gas inlet) of the other side end 39b in the longitudinal direction of internal space 31, for example, the other side end 39b in the longitudinal direction It is provided at the position. A worker or the like can confirm the flow of the exhaust gas on the opposite side of the exhaust gas inlet 33, which is difficult to confirm with the visual recognition window provided temporarily on the exhaust gas inlet 33 side, through the visual recognition window 80A.

  In some embodiments, the marine vessel desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 and the viewing window 80A includes the distribution device 38 described above. The spray device 38 has the above-described water spray nozzle 38c2 (including the water spray nozzles 38a2 and 38b2) capable of injecting the cleaning liquid into the internal space 31. And visual recognition window 80A mentioned above is arranged in the position which can visually recognize water spray nozzle 38c2. In this case, since the visual recognition window 80A described above is disposed at a position where the water spray nozzle 38c2 can be visually recognized, the worker etc. sprays the spray condition of the cleaning liquid by the water spray nozzle 38c2 via the visual recognition window 80A. It is possible to confirm the spray condition of the cleaning liquid by the device 38. Then, when the spraying condition of the cleaning liquid by the spraying device 38 is poor, the spraying condition of the spraying device 38 can be improved by performing processing such as washing of the water spray nozzle 38c2.

  In some other embodiments, the ship desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 and the viewing window 80A described above includes the distribution device 38 described above. The spray device 38 has the above-described water spray nozzle 38c2 (including the water spray nozzles 38a2 and 38b2) capable of injecting the cleaning liquid into the internal space 31. The water spray nozzle 38c2 is configured to be capable of injecting the cleaning solution upward. The cleaning liquid sprayed upward from the water spray nozzle 38 c 2 falls naturally after rising to the upper end (apical end) in the internal space 31. And the visual recognition window 80A mentioned above is provided in the height position where the upper end (top end) of the washing | cleaning liquid sprayed by the spraying device 38 can be confirmed. More specifically, the viewing window 80A is disposed at substantially the same height position as the upper end (top end) of the cleaning liquid in design. In this case, the visual recognition window 80A described above is disposed at a position where the upper end of the cleaning liquid to be sprayed by the spray device 38 can be confirmed. It is possible to confirm that the spraying situation of is appropriate.

  In some embodiments, in the absorption tower 30 provided with the packed bed 35 as shown in FIG. 13, the viewing window 80A is 0.5 m or more and 1.5 m or less above the water spray nozzle 38 c 2 of the spray device 38. Preferably, they are provided at height positions separated by 0.7 m or more and 1.3 m or less, more preferably 0.8 m or more and 1.2 m or less. In this case, the worker can confirm the upper end (apex) of the cleaning liquid sprayed by the spray device 38 through the viewing window 80A.

  In some embodiments, as shown in FIG. 14, in the absorption tower 30 without the packed bed 35, the viewing window 80A is 5 m or more and 15 m or less, preferably 7 m above the watering nozzle 38c2 of the spraying device 38. It is provided in the height position which separated by 13 m or less, more preferably 8 m or more and 12 m or less. In this case, the worker can confirm the upper end (apex) of the cleaning liquid sprayed by the spray device 38 through the viewing window 80A.

In some embodiments, in the ship desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 and the viewing window 80A described above, and the distribution device 38 having the water spray nozzle 38c2, the absorption tower main body described above The exhaust gas 32 is configured to flow upward from below in the vertical direction, and includes the above-described mist eliminator 37 provided above the water spray nozzle 38c2 in the internal space 31. And visual recognition window 80A was arranged above water sprinkling nozzle 38c2 and below the above-mentioned mist eliminator 37, as shown in Drawing 13 and 14. In this case, the absorber main body 32 is configured such that the exhaust gas flows upward from below in the vertical direction. And visual recognition window 80A is arranged above water sprinkling nozzle 38c2, and below mister eliminator 37. Since the exhaust gas comes into gas-liquid contact with the cleaning liquid below the mist eliminator 37, even if the visual recognition window 80A is provided above the mist eliminator 37, the dispersion state of the cleaning liquid by the scattering device 38 can not be confirmed. By arranging the visual recognition window 80A as described above, the worker can confirm the dispersion state of the cleaning liquid by the scattering device 38 through the visual recognition window 80A. In particular, when the water spray nozzle 38c2 is configured to be able to spray the cleaning solution upward, the operator can check the upper end of the cleaning solution to be sprayed by the spraying device 38 through the above-mentioned visual recognition window 80A. It is possible to confirm that the spraying situation of is appropriate.
The inventions according to the above-described embodiments are applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers. is there.

(Filling material)
As described above, in the packing layer 35, for example, a large number of regular packings are laminated in layers. Here, the filler (filler) in the filler bed 35 enhances the gas-liquid contact efficiency between the exhaust gas and the cleaning liquid in the absorption tower 30. In the absorption tower 30, when the packings stacked in the packed bed 35 move and become uneven distribution due to the movement (rolling, pitching, yawing, etc.) of the ship 1, the exhaust gas is absorbed without being desulfurized. There is a risk of being discharged to the outside of the tower.

  FIG. 15 is a perspective view (conceptual view) for describing the filling in an embodiment of the present invention. As shown in FIG. 15, in some embodiments, a plurality of packings 35A in the packing layer 35 are arranged side by side vertically and horizontally. As shown in FIG. 15, the fillings 35A are each formed in a substantially rectangular parallelepiped shape. The filler 35A has outer diameter dimensions of, for example, 500 mm, 500 mm and 100 mm. And in the position which provides the filling layer 35 of the internal space 31, the filler 35A is arrange | positioned in multiple numbers respectively in every direction. In the filling layer 35, a plurality of fillings 35A of one layer may be arranged side by side in the lateral direction without stacking the fillings 35A.

According to the above configuration, since the fillings 35A in the filling layer 35 are arranged at least in the lateral direction to each other, the movement due to the motion of the vessel 1 is limited, and the uneven arrangement is prevented. Therefore, the risk of exhaust gas being discharged to the outside of the absorber without being desulfurized can be reduced.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the packing 35A comprises at least in part a regular packing, in some other embodiments the packing 35A comprises at least in part irregular packing. There is. Here, “ordered packing” refers to packings that are suitable for regular stacking, and “random packing” refers to packings that are stacked irregularly during packing. The irregular packing has a higher required pressure loss than the regular packing, but can improve the dispersibility of the cleaning solution. For this reason, the packing 35A is selected as either regular packing or irregular packing or what proportion of the regular packing and irregular packing should be selected depending on the required pressure drop and the treatment performance with the cleaning solution. Ru.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, the above-described vessel desulfurization apparatus 20 fills the absorption tower 30 including the absorption tower main body 32 described above, the dispersion apparatus 38 described above, and the packed bed 35 provided in the internal space 31 described above And the filling 35A configured to bring the cleaning liquid into gas-liquid contact with the exhaust gas passing through the filling bed 35. In this case, the ship desulfurization apparatus 20 is charged with the cleaning liquid in which the contact area is increased on the surface of the filler 35A when the exhaust gas flows between the fillers 35A filled in the filler bed 35 (clearance), The exhaust gas whose flow is disturbed by the object 35A can be brought into gas-liquid contact. According to such a ship desulfurization apparatus 20, since the gas-liquid contact efficiency between the cleaning liquid and the exhaust gas can be enhanced by the filling material 35A, the sulfur content in the exhaust gas is higher than in the case where the filling material 35A is not provided. Can be effectively removed.

  FIG. 16 is a schematic view for explaining an anticorrosion layer in an embodiment of the present invention, and is a schematic view showing an absorption tower of the ship desulfurization apparatus. As shown in FIG. 16, in some embodiments, the packed bed of the wall surfaces (including the long wall surfaces 32 a and 32 b and the short wall surfaces 32 c and 32 d) that defines the internal space 31 of the absorber body 32. An anticorrosion layer 84 is formed on at least a part of the wall surface other than the wall surface which divides 35. And the anticorrosive layer 84 is not formed in the wall surface which divides the packed bed of the absorption tower main-body part 32. As shown in FIG. The anticorrosion layer 84 includes the anticorrosion coating with the anticorrosion paint described above and the anticorrosion lining described above.

  The absorption tower 30 (the absorption tower main body 32) is assembled by a block method. That is, the absorption tower 30 (the absorption tower main body 32) is manufactured for each of several layer portions such as a round slice, and is completed by stacking the layer portions and connecting the portions.

  The absorption tower main body 32 is, as shown by dividing each portion by a two-dot chain line in FIG. A second layered portion 32B which is a portion lower than the portion 32A and which has a wall surface which divides the storage space 31a and the lower side internal space 31b, and a first layered portion in the absorber main body 32 The third layered portion 32C, which is a portion above the portion 32A, is completed by stacking the third layered portion 32C having wall surfaces defining the upper internal space 31c and joining the portions together.

  The material of the second layered portion 32B, the third layered portion 32C, and the exhaust gas introducing portion 34 is, for example, carbon steel (normal steel) such as SS400. And as shown in FIG. 16, the anticorrosive layer 84 is formed in the wall surface (inner wall surface) of the 2nd layered part 32B, the 3rd layered part 32C, and exhaust gas introduction part 34. As shown in FIG. On the other hand, the material of the first layered portion 32A is, for example, high corrosion resistant stainless steel (stainless steel) such as SUS316L. Then, as shown in FIG. 16, the anticorrosive layer 84 is not formed on the wall surface (inner wall surface) of the first layered portion 32A.

  In the ship desulfurization apparatus 20, since high temperature exhaust gas flows through the inside of the absorption tower main body 32, the wall surface (inner wall) defining the internal space 31 of the absorption tower main body 32, etc. May corrode. Moreover, when using seawater as a washing | cleaning liquid, there exists a possibility that the wall surface etc. which mentioned above may be corroded. In general, in order to protect the wall surface described above, it is conceivable to provide the anticorrosion layer 84 over the entire surface of the wall surface described above. However, when the vessel shakes, the filler 35A moves and may collide with the anticorrosion layer 84 that protects the wall surface defining the filling layer 35, and the anticorrosion layer 84 may be peeled or damaged. Peeling or damage of the anticorrosion layer 84 may lead to the corrosion of the wall surface protected by the anticorrosion layer 84.

  According to the above configuration, the marine vessel desulfurization apparatus 20 forms the anticorrosive layer 84 on the wall surface other than the wall surface that divides the filling layer 35 among the wall surfaces (inner wall surface) that defines the internal space 31 of the absorption tower main body 32. It is done. If the corrosion protection layer 84 is formed on the wall surface partitioning the filling layer 35, the filling 35A moves due to the sway of the ship, and may collide with the corrosion protection layer 84 to separate or damage the corrosion protection layer 84. Instead of forming the anticorrosion layer 84 on the wall defining the wall, the layer portion (the first layer portion 32A described above) surrounding the packed layer 35 in the absorber main body 32 is made of, for example, a corrosion resistant material such as stainless steel. Control the corrosion of the wall surface. Such a ship desulfurization apparatus 20 can suppress the corrosion of the wall surface defining the internal space 31 while preventing damage to the anticorrosion layer 84 due to the filling 35A.

  In some embodiments, in the ship desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 described above, the spreading device 38 described above, and the filling material 35A described above, the filling material 35A has a rule It is a filling. In this case, the vessel desulfurization device 20 can reduce the pressure loss of the exhaust gas as compared with the case where the filler 35A is an irregular filler, since the filler 35A is a regular filler. The amount of exhaust gas treatment can be increased. For this reason, the desulfurizing apparatus 20 for ships which makes the packing 35A the regular packing can miniaturize the absorption tower 30 compared with the desulfurizing apparatus 20 which makes irregular packings the packing 35A. In addition, the regular packing is less likely to move due to the shaking of the vessel 1 than the irregular packing, and is unlikely to be unevenly arranged due to the shaking of the vessel 1. Therefore, the ship desulfurization apparatus 20 in which the regular packing is the packing 35A has an exhaust gas undesulfurized to the outside of the absorption tower 30 as compared to the ship desulfurization apparatus 20 in which the irregular packing is the packing 35A. The risk of being discharged can be reduced.

In some embodiments, in the ship desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 described above, the spreading device 38 described above, and the filler 35A described above, the absorption tower main body 32 is The exhaust gas is configured to flow upward from below in the vertical direction. And the spraying device 38 is comprised so that a washing | cleaning liquid may be injected upward. In this case, the spray device 38 is configured to spray the cleaning solution upward. The cleaning liquid sprayed upward is dispersed at the upper end (the top), and then finely divided and dropped to be dispersed and present on, for example, the surface of the filling 35A in the internal space 31. When the exhaust gas flows upward from below in the vertical direction in the internal space 31, the sulfur contained in the exhaust gas is removed by gas-liquid contact with the cleaning liquid adhering to the surface of the filling 35A or the cleaning liquid falling. Be done.
The invention according to some embodiments described above is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the filler 35A has a strength that allows at least the upper surface to correspond to the human load. In this case, it can be used as a scaffold in the case of installing a part in the internal space 31 or at the time of maintenance work.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the spacing Hn between the packed bed 35 and the spreading device 38 shown in FIG. 13 is 2 m or more. In this case, since a work space is secured, the installation and replacement work of the spray device 38 can be made more efficient. Further, by increasing the size of the manhole connecting the internal space 31 and the outside according to the expansion of the work space, the efficiency of installation and replacement work of the scattering device 38 can be further improved.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  In some embodiments, as shown in FIG. 14, the pH adjuster 81 is disposed in at least a part of the storage space 31 a. More specifically, as shown in FIG. 14, the pH adjuster 81 includes a lock-like alkaline agent 81A which is spread inside the net and spread at least part of the bottom of the storage space 31a. In some embodiments, the lock-like alkaline agent 81A is spread over the bottom of the storage space 31a.

According to the above configuration, since the lock-like alkaline agent 81A is disposed in at least a part of the storage space 31a, the lock-like alkaline agent 81A and seawater after low pH desulfurization containing sulfurous acid (washing fluid) Can be brought into contact with each other, so that the seawater after low pH desulfurization can be neutralized to raise the pH value. In addition, since the rocking alkaline agent 81A can be spread over the bottom of the storage space 31a, wave splashing during sloshing can be reduced, so that the force applied to the absorption tower main body 32 during sloshing can be reduced. Further, to reduce wave splashing during sloshing, as shown in FIG. 14, when the sprayed washing liquid stored in the storage space 31 a exceeds a certain amount, the absorption tower 30 is positioned downstream as shown in FIG. 14. It is particularly useful when the partition 82 which flows to the seawater discharge pipe 59 is provided, and it is possible to suppress the flow to the downstream side even if the sprayed washing liquid does not reach a certain amount due to wave splashing during sloshing.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  In some embodiments, as shown in FIG. 14, the absorption tower 30 includes the above-described partition 82 between the storage space 31 a and the internal space 59 a of the seawater discharge pipe 59 on the other side in the longitudinal direction. A seawater passing space 82a is defined by the lower end of the side end 39b, the bottom of the storage space 31a, and a ceiling 83 extending to the seawater discharge pipe 59 along the vertical direction from the side end 39b. It is formed. Then, the lock-like alkaline agent 81A is spread over the bottom of the seawater passing space 82a.

According to the above configuration, since the lock-like alkaline agent 81A is disposed in at least a part of the seawater passing space 82a, the lock-like alkaline agent 81A and seawater after low pH desulfurization containing sulfurous acid Since the low pH desulfurization seawater can be neutralized and pH value can be raised because it can be made to contact.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

Moreover, in some embodiments, a hatch 83a that can be opened and closed is provided to a ceiling 83 located above the seawater passing space 82a. In this case, by opening the hatch 83a, the lock-like alkaline agent 81A in the seawater flowing space 82a can be exchanged together with the net, so that the efficiency of the exchange operation of the lock-like alkaline agent 81A can be improved.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  As shown in FIG. 14, in some embodiments, the absorption tower 30 does not include the packed bed 35 that separates the lower internal space 31 b and the upper internal space 31 c. Here, in FIG. 14, the lower side of the spray device 38 is referred to as a lower side internal space 31 b, and the upper side of the spray device 38 is referred to as an upper side internal space 31 c. The spreading device 38 is disposed closer to the lower side of the absorber main body 32 than when the packed bed 35 is provided. For this reason, the upper side internal space 31c has a length along the vertical direction.

According to the above configuration, since the upper side internal space 31 c has a length along the vertical direction, the upper end (apex) of the cleaning liquid sprayed from the spraying device 38 can be located at a high position. For this reason, the absorption tower 30 can reduce the risk of exhausting the exhaust gas to the outside of the absorption tower without being desulfurized without providing the packed bed 35.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

FIG. 17 is a schematic view showing an absorption tower of the ship desulfurization apparatus according to one embodiment of the present invention, and is a view for explaining a wall reinforcing member and a partition wall. As shown in FIG. 17, in some embodiments, the absorption tower 30 is provided with a wall reinforcing member 92 inside the absorption tower main body 32. The wall reinforcing member 92 is fixed to one of the pair of longitudinal wall surfaces 32a and 32b and the pair of short wall surfaces 32c and 32d as shown in FIG. And has a longitudinal direction along a horizontally fixed wall surface. In this case, the structural strength of the absorption tower 30 can be maintained by the wall reinforcing member 92.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the absorption tower 30 is disposed within the interior space 31 and extends along the longitudinal direction to divide the interior space 31 into a plurality of spaces, as shown in FIG. A partition wall 93 is provided. In this case, the structural strength of the absorption tower 30 can be maintained by the partition wall 93, and the exhaust gas can be rectified by the partition wall 93.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the absorption tower 30 has a pair of longitudinal wall surfaces 32a, 32b formed thicker than the pair of lateral wall surfaces 32c, 32d. In this case, the structural strength of the absorption tower 30 can be maintained by thickening the pair of longitudinal wall surfaces 32a and 32b.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

(spray)
In some embodiments, as shown in FIGS. 5, 8 and 14, the above-described vessel desulfurization apparatus 20 includes the absorption tower 30 including the absorption tower main body 32 described above, and the spraying device 38 described above. Have. The spray device 38 includes a water spray pipe 38c1 (including a longitudinal direction water spray pipe 38a1 and a short direction water spray pipe 38b1) extending to the internal space 31 and a plurality of water sprays disposed at predetermined intervals in the water spray pipe 38c1. And a nozzle 38c2 (including water spray nozzles 38a2 and 38b2). In this case, the ship desulfurization apparatus 20 sprays the cleaning liquid flowing through the water sprinkling pipe 38c1 from the plurality of water sprinkling nozzles 38c2 arranged at predetermined intervals in the water sprinkling pipe 38c1 to the cleaning liquid in the internal space 31 Can be dispersed uniformly. Therefore, the ship desulfurization apparatus 20 can suppress the influence of the problem that the dispersion of the cleaning liquid becomes uneven due to the fluctuation (rolling, pitching, yawing, etc.) of the ship 1.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, the absorption tower 30 is formed in an elongated shape having a longitudinal direction, and further includes at least one support capable of supporting the water spray pipe 38c1 of the spray device 38 from the lower side. The support may be a round bar, a square bar, a flat plate, an L shape, or the like. The supports are disposed such that the longitudinal direction intersects with the longitudinal direction of the water spray pipe, and both longitudinal end portions are fixed to the wall surface of the absorber main body 32. In the case of providing a plurality of supports, the plurality of supports are arranged at equal intervals so that the longitudinal directions thereof are along. The water spray pipe 38c1 may be fixed to the support.

According to the above configuration, since the water spray pipe 38c1 of the spray device 38 is supported from the lower side by the support, the water spray pipe 38c1 itself does not have to have a structural strength, and the miniaturization of the water spray pipe 38c1 Weight reduction can be performed. In addition, since the work can be performed while being mounted on the support at the time of installation and replacement of the water spray pipe 38c1, the efficiency of the installation work and the replacement work can be improved. When the supports are arranged at equal intervals, the water spray nozzles 38c2 can be easily and evenly arranged by providing the water spray nozzles 38c2 between the supports.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, absorber 30 further includes a plurality of the aforementioned supports. The plurality of supports are arranged at regular intervals in the height direction of the absorption tower 30.

According to the above configuration, since the plurality of supports are disposed at regular intervals in the height direction of the absorption tower 30, the height position of the water spray pipe 38c1 can be changed. Moreover, since several supports can be used for installation of a work scaffold, for example, at the time of maintenance of a lining, the effort of a work scaffold can be saved and the time of installation work can be shortened. In addition, since the plurality of supports can be freely utilized for applications other than the installation of work scaffolds, the maintainability of the absorption tower 30 can be improved. Here, since the operation period of the dog 1 or the period in which it can be anchored to the quay is limited due to the problem of the anchorage cost etc., the maintainability of the absorption tower 30 provided in the ship 1 and the maintenance period shortening are especially is important.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the sprinkler tube 38c1 of the sparger 38 has a degree of structural strength that is not required to be supported from below by the support. In this case, the support need not be installed in the absorber 30.
In addition, in some embodiments, the sprinkler tube 38c1 of the spraying device 38 has a strength that can cope with the human load. In this case, the water sprinkling pipe 38c1 can be used as a scaffold when installing parts in the internal space 31 or at the time of maintenance work.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the water spray pipe 38c1 of the spray device 38 is removably fixed to the absorber body 32 by fastening means such as bolts. In this case, since the water spray pipe 38c1 is detachably fixed to the absorber main body 32, the water spray pipe 38c1 can be easily replaced. For this reason, the maintainability of the absorption tower 30 can be improved.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0. Moreover, the invention which concerns on this implementation is applicable also to any of the absorption tower containing a support, and the absorption tower which does not contain a support.

In some embodiments, the water spray nozzle 38c2 of the spray device 38 is detachably fixed to the water spray tube 38c1 by fastening means such as bolting and screwing. In this case, since the water spray nozzle 38c2 is detachably fixed to the water spray pipe 38c1, the water spray nozzle 38c2 can be easily replaced. For this reason, the maintainability of the absorption tower 30 can be improved.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0. Moreover, the invention which concerns on this implementation is applicable also to any of the absorption tower containing a support, and the absorption tower which does not contain a support.

(Pre-desulfurization tower)
FIG. 18 is a view for explaining an exhaust gas cooling device of the ship desulfurization device according to the embodiment of the present invention. As shown in FIG. 18, in some embodiments, the ship desulfurization apparatus 20 is disposed in the vertical portion 34B of the exhaust gas inlet 34 and cools the exhaust gas led into the exhaust gas inlet 34. It further comprises an exhaust gas cooler 85 for spraying water. And, the exhaust gas cooling device 85 is provided with a water sprinkling pipe 85a extending in parallel or perpendicular to a pair of wall surfaces positioned on both sides in the width direction of the exhaust gas introducing portion 34, and a plurality of water sprinkling pipes 85a. And a cooling water nozzle 85b. Here, each of the water injection pipe 85a and the cooling water nozzle 85b is of the above-described water injection pipe 38c1 (including the longitudinal direction water injection pipe 38a1 and the short direction water injection pipe 38b1) and the water injection nozzle 38c2 (including the water injection nozzles 38a2 and 38b2). Since the configuration is the same as that of each of them, the description of the common items is omitted.

According to the above configuration, the temperature of the exhaust gas introduced into the exhaust gas introducing portion 34 can be lowered by dispersing the cooling water. For this reason, it is possible to suppress an increase in the temperature in the exhaust gas introducing portion 34. Here, in the absorption tower 30 for ships, the temperature of the exhaust gas introduced into the exhaust gas introducing portion 34 is higher than that of the absorption tower for land where the heat exchanger for heat exchange of the exhaust gas is disposed on the upstream side It is. More specifically, although the absorption tower for land is cooled to about 170 ° C. before being introduced into the exhaust gas inlet 34, the absorption tower for ships is about 300 ° C. exhaust gas in the exhaust gas inlet 34. Will be led directly. Moreover, when the anticorrosive lining (anticorrosive layer 84) is given to the exhaust gas introducing part 34 of the absorption tower 30 for ships, there is a possibility that the anticorrosive lining may be damaged by the heat of the exhaust gas. In addition, in the case of the scattering by the scattering device 38 of the absorption tower main body 32, the inlet side of the exhaust gas introduction part 34 can not be cooled. Therefore, the exhaust gas cooling device 85 is particularly useful when provided in the absorption tower 30 for a ship. In addition, since the volume of the exhaust gas introduced into the exhaust gas introducing portion 34 can be reduced by dispersing the cooling water, a large amount of exhaust gas can be processed in the absorption tower 30.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, as shown in FIG. 18, the exhaust gas cooling device 85 is connected via the cooling water supply pipe 58a (cooling water pipe) branched from the seawater supply pipe 58 of the seawater supply device 50 at the branch point TP1. The seawater introduced into the interior of the ship body 2 is supplied by the seawater supply pump 54a. In this case, since the seawater supply device 50 can be shared with the spray device 38, the ship desulfurization device 20 can be prevented from increasing in size and becoming complicated in structure.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization device 20 further includes an emergency cooling device 87 for supplying emergency cooling water to the exhaust gas cooling device 85 in an emergency, as shown in FIG. Here, the emergency refers to, for example, the case where the exhaust gas becomes high temperature without being sprayed by the spraying device 38 in the water supply tower 30. The emergency cooling device 87 is connected to an emergency tank 86 for storing emergency cooling water, and a sprinkling pipe 85a of the exhaust gas cooler 85 and the emergency tank 86, and the sprinkling pipe 85a is connected to the emergency tank 86 for emergency use. And an emergency cooling water line 88 for supplying cooling water. The emergency cooling device 87 does not require a power supply and is configured to operate even when the power is lost. For example, the emergency cooling device 87 may include a pressurized tank as the emergency tank 86, and the emergency tank 86 is disposed at a high position to supply emergency cooling water to the sprinkler tube 85a due to the difference in height. It may be Further, as shown in FIG. 18, the emergency cooling water pipe 88 may be provided with an emergency on-off valve 90. The emergency on-off valve 90 is configured to close while electricity is supplied from the power supply and to open when the power is lost. In this case, the emergency cooling device 87 that can operate even when the power is lost can reduce the temperature of the exhaust gas introduced into the absorption tower 30 by dispersing the cooling water in an emergency. For this reason, since the rise of the temperature in absorption tower 30 can be controlled, it can prevent that absorption tower 30 breaks down by high temperature.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization device 20 further includes an emergency bypass device 89 for diverting the absorption tower 30 to the exhaust gas in an emergency, as shown in FIG. 18. The emergency bypass device 89 includes a switching damper 89 a provided in the middle of the exhaust gas pipe line connected to the main engine 12 and the absorption tower 30, and an exhaust gas pipe line connected to the auxiliary engine 14 and the absorption tower 30. And a switching damper 89b provided on the way. In the normal state, the switching damper 89 a and the switching damper 89 b close the flow path for detouring, while the flow path leading to the absorption tower 30 is opened. In an emergency, the switching damper 89 a and the switching damper 89 b open the flow path for bypassing, while the flow path leading to the absorption tower 30 is closed. In this case, the emergency bypass device 89 can divert the exhaust gas in an emergency and stop flowing into the absorption tower 30. For this reason, since it is possible to suppress an increase in temperature in the absorption tower 30 at an emergency, it is possible to prevent the absorption tower 30 from being broken due to high temperature.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  FIG. 19 is a view for explaining an exhaust gas cooling device of the ship desulfurization device according to the embodiment of the present invention. In some embodiments, as shown in FIG. 19, the above-described vessel desulfurization apparatus 20 includes an exhaust gas inlet connected to the absorption tower main body 32 and the exhaust gas inlet 33 in which the exhaust gas inlet 33 described above is formed. And an exhaust gas cooling device 85 which can disperse cooling water to the exhaust gas introduced into the exhaust gas introducing portion 34. Then, the exhaust gas cooling device 85 has a cooling water nozzle 85 b configured to eject the cooling water toward the upstream side in the flow direction of the exhaust gas.

  According to the above configuration, the ship desulfurization apparatus 20 diffuses the cooling water with the exhaust gas cooling device 85 to the exhaust gas introduced into the exhaust gas introducing unit 34, whereby the exhaust gas introduced into the exhaust gas introducing unit 34 The temperature of the exhaust gas introducing portion 34 can be suppressed. Since the exhaust gas at a higher temperature than the land-based desulfurization device installed in the power plant is introduced into the ship desulfurization device 20, the temperature of the exhaust gas may be lowered to alleviate the influence on the desulfurization device and improve the desulfurization performance. It becomes important. Further, by dispersing the cooling water by the exhaust gas cooling device 85, the volume of the exhaust gas introduced into the exhaust gas introducing portion 34 can be reduced, so that a large amount of exhaust gas can be processed in the absorption tower 30. Further, since the cooling water nozzle 85b of the exhaust gas cooling device 85 ejects the cooling water toward the upstream side in the flow direction of the exhaust gas, the temperature of the exhaust gas introduced into the exhaust gas introducing portion 34 before reaching the cooling water nozzle 85b It is possible to reduce the damage of the cooling water nozzle 85b due to the heat of the exhaust gas.

  In some embodiments, as shown in FIG. 19, the above-described exhaust gas cooling device 85 is configured to be supplied with seawater as cooling water from the seawater supply pump 54a, and a first exhaust gas cooling device 85C; And a first exhaust gas cooling device 85D configured to be supplied, for example, industrial water as emergency cooling water from the emergency cooling device 87. That is, the ship desulfurization apparatus 20 may have a dedicated apparatus or piping for injecting the emergency coolant water from the coolant nozzle 85b.

  As mentioned above, in some embodiments, the cooling water mentioned above is seawater introduced into the interior of the vessel 1. In this case, the ship desulfurization apparatus 20 can suppress consumption of water such as industrial water required during navigation of the ship 1 by using seawater introduced into the inside of the ship 1 as cooling water. it can.

  In some embodiments, the above-described vessel desulfurization apparatus 20 includes an absorption tower 30 including the absorption tower main body 32 in which the exhaust gas inlet 33 is formed and the exhaust gas inlet 34 connected to the exhaust gas inlet 33. And an exhaust gas cooling device 85 having the cooling water nozzle 85b described above. Then, the exhaust gas introducing unit 34 is configured such that the exhaust gas flows downward from above in the vertical direction. Furthermore, the cooling water nozzle 85b is configured to spray the cooling water upward.

  Here, when the cooling water is dispersed by the exhaust gas cooling device 85 to reduce the temperature of the exhaust gas with respect to the exhaust gas introduced into the exhaust gas introducing unit 34, sulfurous acid may be generated. Moreover, when seawater is used as cooling water, salt may precipitate from seawater by temperature rise. If sulfurous acid or salt adheres to the cooling water nozzle 85b, there is a possibility that the spraying performance may be reduced.

  According to the above configuration, the cooling water nozzle 85b is configured to spray the cooling water upward. The cooling water jetted upward contacts the exhaust gas above the cooling water nozzle 85b, drops the temperature of the exhaust gas, and then drops onto the cooling water nozzle 85b or the like. The cleaning solution dropped onto the cooling water nozzle 85b can wash away the sulfurous acid and salt adhering to the cooling water nozzle 85b. Further, by keeping the cooling water nozzle 85b wet by the cleaning liquid dropped onto the cooling water nozzle 85b, adhesion of sulfurous acid and salt to the cooling water nozzle 85b can be suppressed, and the cooling water nozzle The temperature rise of 85b can be suppressed.

  In some embodiments, the above-described vessel desulfurization apparatus 20 includes an absorption tower 30 including the absorption tower main body 32 in which the exhaust gas inlet 33 is formed and the exhaust gas inlet 34 connected to the exhaust gas inlet 33. And the exhaust gas cooling device 85 described above. The above-described exhaust gas cooling device 85 includes the above-described cooling water nozzle 85b, the above-described cooling water supply pipe 58a (cooling water pipe) for supplying the cooling water to the cooling water nozzle 85b, and the cooling water supply pipe 58a ( The cooling water control valve 94 provided in the cooling water pipe) has a cooling water control valve 94 capable of controlling the amount of cooling water sprayed from the cooling water nozzle 85b.

  The pressure of the cooling water on the primary side of the cooling water pipeline upstream of the cooling water control valve 94 (the side of the seawater supply pump 54a) is a variable factor such as the height of the draft line and the number of operating seawater supply pumps 54a (pumps). If the cooling water control valve 94 is not provided, the amount of cooling water sprayed from the cooling water nozzle 85b varies widely due to the above-mentioned fluctuation factor, and therefore the cooling water is introduced into the exhaust gas introducing portion 34. There is a possibility that the cooling of the exhaust gas may be insufficient. On the other hand, according to the above configuration, the exhaust gas cooling device 85 is introduced to the exhaust gas introducing portion 34 by controlling the amount of the cooling water to be dispersed from the cooling water nozzle 85 b by the cooling water control valve 94. Exhaust gas can be sufficiently cooled.

  In some embodiments, the cooling water control valve 94 described above has an opening degree such that the pressure of the cooling water on the secondary side that is downstream (the cooling water nozzle 85b side) of the cooling water control valve 94 is constant. The amount of cooling water sprayed from the cooling water nozzle 85b is controlled by adjusting.

  As shown in FIG. 19, assuming that the downstream side (the downstream side) of the cooling water supply pipe 58a with respect to the cooling water control valve 94 is the downstream side cooling water supply pipe 58b, the pressure gauge in the downstream side cooling water supply pipe 58b 95 (fluid pressure detection device) is provided. The pressure gauge 95 is configured to be able to detect the pressure of the cooling water in the downstream side cooling water supply pipe 58b. The coolant control valve 94 is configured to adjust the opening degree so that the pressure detected by the pressure gauge 95 becomes constant.

  By making the pressure of the cooling water on the downstream side (the downstream side) of the cooling water control valve 94 constant by the cooling water control valve 94, the pressure of the cooling water at the time of spouting from the cooling water nozzle 85b also becomes constant. The cooling water nozzle 85b always sprays a predetermined amount or more of cooling water at a predetermined height. In this case, since a predetermined amount or more of cooling water can be dispersed constantly from the cooling water nozzle 85b, the exhaust gas introduced into the exhaust gas introducing portion 34 can be continuously cooled.

Further, continuously detecting the pressure of the cooling water in the downstream side cooling water supply pipe 58b by the pressure gauge 95 means, for example, continuously detecting the temperature of the cooling water in the downstream side cooling water supply pipe 58b by a thermometer, etc. It is easy to detect as compared with other detection devices. In addition, since the pressure on the primary side largely fluctuates as described above, it is not suitable as an index for adjusting the opening degree of the cooling water control valve 94. Therefore, by using the pressure on the secondary side detected by the pressure gauge 95 as an index for adjusting the opening degree of the cooling water control valve 94, the cooling water sprayed from the cooling water nozzle 85b by the cooling water control valve 94 can be used. Control of the spread rate can be made easy.
The invention according to some embodiments described above is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the ship desulfurization device 20 includes an exhaust gas for monitoring the temperature of the exhaust gas discharged from the outlet of the absorption tower 30 and the emergency cooling device 87 described above, the emergency bypass device 89 described above, and the like. And a temperature monitoring device. The exhaust gas temperature monitoring device includes a temperature sensor. Then, when the exhaust gas temperature monitoring device detects a high temperature, the emergency cooling device 87 operates to disperse the cooling water, and the emergency bypass device 89 operates to flow the exhaust gas into the absorption tower 30. It is prevented. The exhaust gas temperature monitoring device may monitor the temperature of the exhaust gas inside the absorption tower 30. In this case, the temperature rise in the absorption tower 30 can be suppressed, so that the failure of the absorption tower 30 due to high temperature can be prevented.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, water, such as cleaning liquid and cooling water, used in the ship desulfurization apparatus 20 is hypophosphite. In this case, since bioadhesion can be prevented by adding hypophosphite, biological corrosion can be suppressed. In the land-based desulfurization system, seawater is used as a boiler condenser and the like, and biological corrosion countermeasures dedicated to the desulfurization system are not performed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the exhaust gas inlet 34 has a double-walled outer wall. In this case, the exhaust gas introducing portion 34 and the cooling water nozzle 85b which contact the exhaust gas first in the absorption tower 30 are easily corroded, and even if the exhaust gas introducing portion 34 and the cooling water nozzle 85b are damaged due to the corrosion, Exhaust gas can be prevented from leaking to the outside. Moreover, since the ship 1 is provided in the steel plate structure 6 in which the absorption tower 30 is a closed space, leakage of exhaust gas is dangerous, and this danger can be avoided.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the exhaust gas introduction unit 34 includes a leak detection device for detecting gas leak or liquid leak due to corrosion, for example, a lining, and the gas leak or liquid leak due to corrosion flows out of the absorption tower 30. It is configured to let you In this case, it is possible to detect gas leakage and liquid leakage due to corrosion in the exhaust gas introduction part 34, and to leak gas leakage and liquid leakage due to corrosion to the outside of the absorption tower 30.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization apparatus 20 further includes a cooling tower as a front end step of the absorber 30. In this case, since the cooling tower is provided as a pre-process of the absorption tower 30, impurities such as heavy metals can be removed in the cooling tower. And, in some embodiments, a water circulation type is used for the cooling tower. In this case, it is possible to reduce the amount of water consumption required while the ship 1 is traveling. Furthermore, in some embodiments, the water circulation cooling tower uses industrial water for cooling rather than seawater. In this case, waste water treatment can be easily performed since it is only necessary to remove specific impurities such as heavy metals, as compared to seawater which may contain nonspecific impurities.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

(Desulfurization system)
In some embodiments, the ship desulfurization apparatus 20 further includes a heat exchanger that recovers heat from the exhaust gas and heats the desulfurized exhaust gas. In some embodiments, the heat exchanger comprises a rotary heat exchanger, for example of the Jungstrom type, or a stationary heat exchanger. In some other embodiments, the heat exchanger includes a gas gas heater (GGH). That is, the heat exchanger includes a heat recovery unit that recovers heat from the exhaust gas, and a reheater that heats the exhaust gas by the heat sent from the heat recovery unit.

According to the above configuration, since the exhaust gas after the desulfurization can be heated by the heat exchanger, it is possible to prevent the white smoke of the exhaust gas and to improve the diffusion of the exhaust gas.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the vessel 1 is provided with a heat medium circulating non-leak gas gas heater. In this case, heat can be recovered from the exhaust gas discharged from the main engine 12 or the auxiliary engine 14 in the engine room 10 by the non-leak gas gas heater. Then, by using the recovered heat to heat the steam used in the ship 1 or using it for heat source equipment such as heating, the fuel used in the ship 1 can be reduced.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization device 20 is configured to reduce flange engagement of the pipe joint. In this case, it is possible to improve the efficiency of the pipe joining operation.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization device 20 is, for example, a device that can be fixed by welding to the absorption tower 30 or the exhaust heat recovery device 60 among devices and parts such as piping, It is fixed in advance at the time of prefabrication described later, which is a pre-process of the work. In this case, it is possible to prevent the displacement of the positions of the instruments and parts when transporting the vessel 1. Moreover, since the assembly work in the ship 1 can be reduced, the efficiency of the installation work of the ship desulfurization apparatus 20 on the ship 1 can be improved.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the piping in the ship desulfurization apparatus 20 is a resin piping, and the end is configured to be connectable by a socket. Moreover, in some embodiments, the pipe in the ship desulfurization apparatus 20 and the socket that connects the pipes are wound with a resin material. In these cases, the corrosion resistance of the pipe or socket can be improved. Also, in some embodiments, rubber piping is used where it is easy to align the piping with one another where the piping is connected to the current piping. In this case, since the alignment of the pipes is easy, the installation work of the pipes can be made more efficient.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the bottom of the vessel is configured to generate foam in the seawater. In this case, the navigation resistance of the ship 1 can be reduced by the bubbles. Moreover, the pH value of the waste_water | drain discharged | emitted outboard from the ship desulfurization apparatus 20 can be raised by making a bubble generate | occur | produce in ship bottom drainage part vicinity. Here, the waste water discharged from the ship desulfurization apparatus 20 to the outside is diluted by being mixed with the sea water, and the pH is lower than that immediately after the discharge from the ship desulfurization apparatus 20. The value has risen to some extent. And since the decarbonation process by foam is promoted compared with the drainage immediately after discharging | emitting from the ship desulfurization apparatus 20, the drainage which pH value raised to some extent or more can raise pH value large.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

(Desulfurization tower assembly method)
For example, a land-based desulfurization apparatus provided in a power plant is assembled by a block method or a panel method. However, the desulfurization apparatus for ships is not easy to assemble because the aspect ratio of the water tower may be different. And it is not realistic to assemble the desulfurization apparatus for ships on a ship to be installed, since the work space and work time on the ship are limited. For this reason, in order to assemble the desulfurization apparatus for a ship, it is necessary to carry out three operations of an assembly operation on land, a suspension operation on the ship, and an installation operation on the ship. And, in order to reduce the working time on the ship, it is necessary to reduce the installation work on the ship. Moreover, since the desulfurization apparatus for ships is suspended on a ship by a lifting machine etc., the structure which can be installed safely is needed.

In some embodiments, the absorption tower 30 is formed in a prefabricated shape at the nearest factory or an assembly place such as a vacant lot, and the above-described prefabricated absorption tower 30 is suspended and transported by a lifting machine or the like. , Installed on the ship 1. In this case, since the absorption tower 30 is formed in a prefabricated shape before being installed on the ship 1, the installation work on the ship 1 can be reduced, and the operation time on the ship 1 can be reduced.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the absorption tower 30 has a wall surface constituting the absorption tower 30 and a pipe disposed around the absorption tower 30 integrally fixed. In this case, since the wall surface of the absorption tower 30 and the pipe are integrally fixed, the pipe can be easily maintained horizontal. Moreover, since the wall surface and piping are integrally fixed, the absorption tower 30 can make installation work easy and can shorten the work time concerning installation work.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, absorber 30 is adapted to be assembled by a block method. That is, the absorption tower 30 is manufactured for each of several layer portions such as a round slice, and is completed by stacking the layer portions and connecting the portions. In this case, the absorption tower 30 is completed by stacking the layered portions and joining the portions together, so that the working time at the assembly site can be shortened. In addition, the block method requires more labor and time for transportation than the panel method.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the absorber 30 is adapted to be assembled by a panel method. That is, a wall surface, a bottom surface, etc. are comprised by plate-shaped members (panels), and the absorption tower 30 is completed by installing the plate-shaped member mentioned above in a pillar, a beam, etc. In this case, since the absorption tower 30 is composed of plate-like members, columns, beams and the like, the plate-like members, columns, beams and the like may be transported to a place where they are assembled. It is possible to easily transport the members. The panel method requires more work at the assembly site than the block method.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the marine desulfurization apparatus 20 is modularized in at least one major part. In this case, since at least one main part is modularized, the ship desulfurization apparatus 20 can reduce the working time at the assembly site.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, absorbers 30 are configured to be self-supporting. Then, the above-described sprinkler tubes (including the longitudinal direction sprinkler tube 38a1, the short direction sprinkler tube 38b1, and the sprinkler tube 85a) are inserted into the self-supporting absorption tower 30 and installed inside the absorption tower 30. Furthermore, the packing 35A described above is also inserted into the self-supporting absorber 30 and installed inside the absorber 30. In this case, since the absorption tower 30 is configured to be able to stand on its own, it is possible to easily insert and arrange the above-described water spray pipe and filler 35A inside the absorption tower 30. Such an absorption tower 30 can reduce the working time at the assembly site.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the plurality of longitudinal sprinkle tubes 38a1 described above are provided at equal intervals in the short direction of the internal space 31, and each of the plurality of longitudinal sprinkle tubes 38a1 is disposed in a staggered manner. The vertical water spouting tubes 38a1 and the adjacent longitudinal water sprinkling tubes 38a1 are disposed at different heights.
In some other embodiments, the plurality of short direction water injection pipes 38b1 described above are provided at equal intervals in the longitudinal direction of the internal space 31, and each of the plurality of short direction water injection pipes 38b1 is formed in a staggered manner. It arrange | positions and it is arrange | positioned so that height direction of adjacent short direction sprinkler tubes 38b1 and each other may differ.
In some other embodiments, the plurality of water spray pipes 85a described above are provided at equal intervals in the exhaust gas introducing portion 34, and each of the plurality of water spray pipes 85a is disposed in a staggered manner and adjacent to each other. It is arrange | positioned so that the water spray pipe 85a and each other's height position may differ.
In these cases, since the cleaning solution and the cooling water can be uniformly supplied, it is possible to reduce the local deviation of the spraying ability.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, the watering nozzle 38a2 is integral with the longitudinal watering tube 38a1 without the use of bolts or the like.
In some other embodiments, the water spray nozzle 38b2 is integrated with the short direction water spray pipe 38b1 without using a bolt or the like.
In some other embodiments, the cooling water nozzle 85b is integrated with the water injection pipe 85a without using a bolt or the like.
In these cases, high strength can be achieved by integrating the water spray nozzle with the water spray pipe. In addition, since seawater desulfurization does not have a fear of clogging, it is possible to make a water spray nozzle and a water pipe into an integral structure.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

(How to install on board)
For example, a land-based desulfurization apparatus provided in a power plant is assembled by a block method or a panel method at an installation site. However, the desulfurization apparatus for ships is not easy to assemble because the aspect ratio of the water tower may be different. And it is not realistic to assemble the desulfurization apparatus for ships on a ship to be installed, because the work space and work time on the ship are limited. For this reason, after assembling the desulfurizing apparatus on land, it is necessary to suspend the vessel with a lifting machine or the like. And the desulfurization apparatus for ships needs the intensity | strength which can endure the operation which is suspended with a lifting machine etc. on a ship, the reinforcement at the time of suspension, etc. Moreover, the desulfurization apparatus for ships has a possibility that deformation | transformation of a water supply tower and peeling of the lining inside a water supply tower etc. may be carried out at the time of the operation | work suspended by a lifting machine etc. in a ship.

In some embodiments, the absorption tower 30 is delivered in one piece with the internal components pre-installed. For this reason, the absorption tower 30 can be installed in the ship 1 in the shipyard as it is in the above-described integral state. In addition, since the absorption tower 30 can be replaced in the above-described integral state at the time of maintenance, the time required for the maintenance operation can be shortened.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  FIG. 21 is a view for explaining fixation of the absorption tower and the steel plate structure of the ship desulfurization apparatus according to the embodiment of the present invention. FIG. 22 is a view for explaining installation of the absorption tower and the steel plate structure on the ship of the ship desulfurization apparatus according to the embodiment of the present invention. In some embodiments, the absorption tower 30 and the exhaust gas introduction device 40 are assembled on land, and the steel plate structure 6 surrounding the absorption tower 30 and the exhaust gas introduction device 40 as shown in FIG. 30 and the exhaust gas introduction device 40 are firmly fixed. Then, as shown in FIG. 22, the absorption tower 30 and the exhaust gas introduction device 40 are suspended by the lifting machine together with the steel plate structure 6 and placed on the ship 1, and together with the steel plate structure 6. It is installed on the ship 1. The steel plate structure 6 may cover only the absorption tower 30. Moreover, the apparatus, piping, wiring, etc. relevant to the desulfurization process of waste gas, such as the waste heat recovery device 60 and the heat exchanger mentioned above, may be fixed to the steel plate structure 6.

According to the above configuration, the absorption tower 30 and the exhaust gas introduction device 40 are suspended together with the steel plate structure 6 to a lifting machine or the like, and therefore the absorption tower 30 and the exhaust gas introduction at the time of suspension or mounting on the ship 1 The deformation of the device 40 can be prevented, and the peeling of the lining inside the absorption tower 30 can be prevented.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

In some embodiments, as shown in FIG. 21, the steel plate structure 6 is disposed in the steel plate structure 6, and is used for fixing the absorption tower 30 and the exhaust gas introduction device 40 to the steel plate structure 6. A member 91 is provided. As shown in FIG. 21, the fixing member 91 is a prismatic longitudinal fixing member 91A extending parallel to each of a pair of longitudinal wall surfaces positioned on both end sides of the steel plate structure 6 in the width direction. And a prismatic short direction fixing member 91B extending parallel to each of the pair of short wall surfaces positioned on both end sides of the steel plate structure 6 in the longitudinal direction. Both ends of the longitudinal direction fixing member 91A and the short direction fixing member 91B are fixed to the steel plate structure 6, and the middle part of the length is fixed to the absorption tower 30 or the exhaust gas introducing device 40. Note that some of the longitudinal fixing members 91A and the short direction fixing members 91B may be fixed to the piping connected to the absorption tower 30 or the exhaust gas introducing device 40. In this case, the steel plate structure 6 can be firmly fixed to the absorption tower 30 and the exhaust gas introduction device 40.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, absorbers 30 are assembled and installed on ship 1 according to the following method. That is, the absorber 30 is assembled on land by a block method or a panel method. The absorption tower 30 is configured to be able to stand on its own. After the absorption tower 30 is assembled, accessories such as the above-described water spray pipe and the above-described filling 35A are installed in the absorption tower 30. After installing the appendage, the steel plate structure 6 described above is placed to firmly fix the absorption tower 30 and the steel plate structure 6. And piping connected to absorption tower 30 grade in steel plate structure 6 is installed. When the installation in the steel plate structure 6 is completed, the steel plate structure 6 is moved to the side of the ship 1, and the steel plate structure 6 is suspended on a lifting machine or the like and placed on the ship 1 for installation.

According to the above configuration, on land, the absorption tower 30 is assembled, and the attachment in the absorption tower 30 and the piping in the steel plate structure 6 are attached to the absorption tower 30. Since attachment and piping are performed before covering the steel plate structure 6, a wide working area can be secured. For example, it is advantageous in the work which inserts spray piping from the outside of absorption tower 30. And since the absorption tower 30 and the steel plate structure 6 are firmly fixed on land, the operation | work done on a ship can be decreased. In addition, since the absorption tower 30 is suspended with the steel plate structure 6 together with the steel plate structure 6 while being fixed in the steel plate structure 6, the steel plate structure 6 is suspended when suspended or mounted on the ship 1. Can be used as a reinforcing material to prevent the absorption tower 30 from being deformed. In addition, it is possible to prevent the peeling of the lining inside the absorption tower 30 and the detachment of the piping in the steel plate structure 6.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, absorbers 30 are assembled and installed on ship 1 according to the following method. That is, at the assembly site on land, the steel plate structure 6 is installed first, and the absorption tower 30 is assembled in the steel plate structure 6. In the steel plate structure 6, a maintenance stage for protection against rain may be provided.

According to the above configuration, since the absorption tower 30 is assembled in the steel plate structure 6 on land, a situation in which the absorption tower 30 can not be stored in the steel plate structure 6 can be avoided. Moreover, by fixing the absorption tower 30 to the steel plate structure 6, even if the absorption tower 30 can not stand on its own, attachments within the absorption tower 30 can be attached to the absorption tower 30.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, absorbers 30 are assembled and installed on ship 1 according to the following method. That is, the absorption tower 30 and the steel plate structure 6 are integrally made, and the absorption tower 30 and the steel plate structure 6 are manufactured in several layer portions such as rounds, and the layer portions are stacked to connect the portions. It is completed by putting it together.

According to the above configuration, on land, since the absorber 30 and the steel plate structure 6 are integrally assembled by the block method, the working time at the assembly site can be shortened. Also, even if the absorption tower 30 can not stand on its own, attachments within the absorption tower 30 can be attached to the absorption tower 30. And since the absorption tower 30 and the steel plate structure 6 are integrally fixed on land, the operation | work done on a ship can be decreased.
The invention according to the present embodiment is also applicable to a rectangular absorption tower having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

(Control, operation method, seawater adjustment)
There is a possibility that the operating conditions of the ship 1 may change due to weather conditions, the sea area to be navigated, and the like during navigation. In addition, it is desirable that the ship 1 not consume extra power during navigation.

  FIG. 20 is a view for explaining the cleaning liquid supply line and the bypass line in the ship desulfurization apparatus according to the embodiment of the present invention. As shown in FIG. 20, in some embodiments, the above-described ship desulfurization apparatus 20 includes the absorption tower 30 including the absorption tower main body 32 described above, the spreading device 38 described above, and the spreading device 38. And a cleaning solution supply device 96 capable of dispersing the cleaning solution.

  Further, as shown in FIG. 20, the cleaning liquid supply device 96 includes a cleaning liquid supply line 97A for supplying the cleaning liquid to the spraying device 38, and a bypass line 97B branched from the cleaning liquid supply line 97A at a branch point TP2. And a control valve 98 provided in the bypass line 97B for supplying the cleaning liquid to the above-mentioned storage space 31a in which the dispersed cleaning liquid dispersed to the exhaust gas led to the internal space 31 is stored. And a control valve 98 capable of controlling the supply amount of the cleaning fluid flowing through the bypass line 98B.

  In the illustrated embodiment, the cleaning fluid supply device 96 comprises the above-described seawater supply device 50 for supplying seawater as a cleaning fluid to the sparging device 38. Further, the cleaning solution supply line 97A comprises a seawater supply pipe 58, and the bypass line 97B comprises a dividing pipe 58c. The branch pipe 58c has one end connected to the seawater supply pipe 58 at a branch point TP2 provided in the seawater supply pipe 58 connecting the seawater supply pump 54a and the sprinkler pipe 38c1 of the dispersing device 38, and the other end is an absorption tower It is connected to 30 storage space 31a (internal space 31). For this reason, a part of the cleaning fluid (seawater) flowing through the seawater supply pipe 58 flows into the storage space 31a through the dividing pipe 58c. In another embodiment, the cleaning liquid supply device 96 may supply water other than seawater as the cleaning liquid to the spraying device 38.

  For example, since the desulfurization performance required is different between the emission control area (ECA area) and the general area, the required amount of the cleaning liquid supplied to the spray device 38 is also different. If the amount of the cleaning liquid supplied to the spray device 38 is smaller than the necessary amount, the necessary desulfurization effect may not be obtained. In addition, when the amount of the cleaning liquid supplied to the spray device 38 is larger than the necessary amount, the pressure loss of the exhaust gas may increase. A control valve is provided on the cleaning liquid supply line 97A for supplying the cleaning liquid to the distribution device 38 as a measure for adjusting the amount of the cleaning liquid supplied to the distribution device 38, and the control valve supplies the cleaning liquid supply line 97A. It is conceivable to control the amount of flowing cleaning fluid supplied. However, since the pipeline constituting the cleaning liquid supply line 97A has a large diameter, the control valve provided in the cleaning liquid supply line 97A may be increased in size and cost. In addition, it is difficult to control the supply amount of the cleaning liquid in the cleaning liquid supply line 97A having a large pipe diameter.

  According to the above configuration, the cleaning liquid supply device 96 controls the supply amount of the cleaning liquid flowing in the bypass line 97B by the control valve 98 provided in the bypass line 97B, thereby supplying the cleaning liquid supplied in the cleaning liquid supply line 97A. It can be controlled indirectly. At this time, the pipe (dividing pipe 58c) constituting the bypass line 97B can be smaller in diameter than the pipe (water supply pipe 58) constituting the cleaning liquid supply line 97A, so the control valve 98 provided in the bypass line 97B. In comparison with the control valve provided in the cleaning liquid supply line 97A, the size and cost can be reduced. Further, the bypass line 97B is easier to control the supply amount of the cleaning liquid than the cleaning liquid supply line 97A.

In some embodiments, a flow meter 99 (flow rate detection device) is provided on the downstream side (dispersion device 38 side) of the cleaning solution supply line 97A than the branch point TP2 at which the bypass line 97B branches off. The flow meter 99 is configured to be able to measure the flow rate (volume flow rate) of the cleaning liquid flowing downstream of the branch point TP2 of the cleaning liquid supply line 97A. The control valve 98 described above is configured to adjust the opening degree so that the flow rate detected by the flow meter 99 falls within a predetermined range. In this case, since the desired amount of cleaning liquid is supplied to the spray device 38, the necessary desulfurizing effect can be obtained, and an increase in the pressure loss of the exhaust gas can be suppressed. In another embodiment, the flow rate may be detected indirectly by multiplying the cross-sectional area by the flow rate detected by the flow meter. That is, the flow rate detection device described above includes a flow meter. Further, the branch point TP2 may be located upstream of the above-described branch point TP1, or may be located downstream of the branch point TP1.
The invention according to some embodiments described above is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0.

  In some embodiments, the vessel 1 further comprises a controller for controlling devices and equipment such as the absorber 30 of the vessel desulfurization device 20. The control device is an electronic control unit that controls devices and devices in the ship 1. For example, the control device may be configured as a microcomputer including a central processing unit (CPU) including a processor, a random access memory (RAM), a read only memory (ROM), and an I / O interface.

In some embodiments, the control device described above performs control of the number of operating water spray nozzles or control of the number of pump operation. Note that the water spray nozzle to be operated may be selected according to the position of the water spray nozzle described above. In this case, the power consumption of the ship 1 can be suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the above-described control device performs control of adjusting the supply amount of the cleaning liquid and the cooling water to the above-described water spray nozzle by, for example, adjusting the opening degree by the movable blade type pump or controlling the number of operating pumps. In this case, the power consumption of the ship 1 can be suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the above-described control device controls the number of operating sprinkler nozzles, controls the number of operating pumps, and adjusts the opening according to the SO2 concentration of the exhaust gas discharged from the absorption tower 30. Control at least one of adjusting the amount of water supplied to the nozzle by In this case, since control according to the processing capacity of exhaust gas by absorption tower 30 can be performed, power consumption of ship 1 can be controlled efficiently.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the control device described above controls the number of operating the water spray nozzles described above according to properties such as pH value and alkalinity of the seawater introduced into the vessel main body 2 by the seawater supply pump 54a. And at least one of the control which adjusts the amount of supply to the watering nozzle by opening adjustment mentioned above is performed. In this case, since control according to the property of the taken-in seawater can be performed, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the control device described above outputs the output of the ship 1, SO2 concentration of exhaust gas before desulfurization by the absorption tower 30, S component in fuel, exhaust gas after desulfurization by the absorption tower 30 The operating load of the absorption tower 30 is grasped individually or in combination, and the control of the number of operating the water spray nozzles described above is controlled according to the operation load, and the supply amount to the water spray nozzle by the opening adjustment described above. Perform at least one of the controls to adjust. In this case, since control corresponding to the operation load of the absorption tower 30 can be performed, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, a pressure gauge is attached to the header portion of the above-described water spray nozzle for monitoring the clogging of the water spray nozzle and the operation of the seawater supply pump 54a. In this case, since the pressure gauge can monitor the blockage of the water spray nozzle and the operation condition of the seawater supply pump 54a, the control device described above can control the ship desulfurization device 20 efficiently.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the drainage pipe 56 or the seawater discharge pipe 59 is provided with an analyzer for constantly monitoring properties such as pH value and desulfurization rate of desulfurization drainage (scrubber drainage, diluted drainage). There is. In this case, since the property of desulfurization drainage can be constantly monitored by the analyzer, the control device described above can efficiently control the ship desulfurization apparatus 20.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the control device described above determines the pH value and desulfurization of the desulfurization effluent even if the number of absorbers 30 that cleans the exhaust gas, the load of each absorber 30, and the S component of the fuel oil change. Control is performed to operate the minimum number of seawater pumps (the seawater supply pump 54a and the drainage dilution pump 52a) required to satisfy the predetermined condition. In this case, since the necessary minimum number of seawater pumps are operated, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the following control method of the ship desulfurization apparatus 20 is performed by the control device described above. That is, the amount of seawater necessary for each combination of the S component of the fuel oil, the load of the engine, the concentration of seawater for each region, and the draft changing with the load amount is made into a database, and the above-mentioned database In the feed forward control based on the above, a control method is performed to supply an appropriate amount of seawater to the devices and instruments in the vessel 1 such as the absorption tower 30. In this case, since an appropriate amount of seawater is supplied by feed forward control, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the following control method of the ship desulfurization apparatus 20 is performed by the control device described above. That is, the pH value and the sulfite concentration in the drainage portion of the ship 1 or the SO2 concentration of the exhaust gas discharged from the absorption tower 30 are detected, and feedback control is performed based on the pH value and the sulfite concentration described above A control method is performed to supply an appropriate amount of seawater to the devices and instruments in the vessel 1 such as the absorption tower 30. In this case, since an appropriate amount of seawater is supplied by feedback control, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, as an analysis method for monitoring the concentration of sulfurous acid in desulfurization waste water, a constant amount of acid is continuously added to the separable flask while continuously supplying a part of the desulfurization waste water to a separable flask equipped with a stirrer. In this case, a method of measuring the gas concentration of sulfur dioxide (SO2) transferred from sulfurous acid to the gas phase with an infrared SO2 meter (infrared gas analyzer) is used. In this case, the concentration of sulfurous acid in the desulfurization waste water can be monitored, and the control device described above can perform control according to the concentration of sulfurous acid in the desulfurization waste water to the above-described water spray nozzle or the like.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the control device described above controls the amount of seawater by performing at least one of pump number control, blade opening control, and VVVF inverter rotational speed control. In this case, the amount of seawater supplied to the absorption tower 30 or the like can be made appropriate.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

(Maintenance method, structure)
The ship desulfurization apparatus 20 collects the exhaust gas introduction pipes of all the engines including the main engine 12 and the auxiliary engine 14 on the ship 1 and inputs them into the absorption tower 30, so at least one of the exhaust gas dampers , High temperature exhaust gas flows on the primary side (upstream side of the exhaust gas damper). For this reason, if exhaust gas leaks from the exhaust gas damper at the time of inspection of the absorption tower 30, there is a possibility that a worker engaged in inspection work may be dangerous. Further, at the time of maintenance, at least one of the main engine 12 and the auxiliary engine 14 needs to be operated at the time of maintenance, and all of the main engine 12 and the auxiliary engine 14 can not be stopped. It is impossible to stop the discharge of

In some embodiments, the ship desulfurization device 20 has two exhaust gas dampers arranged in series at at least one location, and is configured to introduce compressed air between the exhaust gas dampers. In this case, two exhaust gas dampers are arranged in series, and compressed air is introduced between the exhaust gas dampers for air sealing, so that exhaust gases are reliably prevented from passing between the exhaust gas dampers and flowing to the other. be able to.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization system 20 includes at least one exhaust gas damper including a switchable closing flange. In this case, since the exhaust gas damper includes the switchable closing flange, the exhaust gas can be reliably prevented from passing between the exhaust gas dampers and flowing to the other.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization system 20 includes at least one exhaust gas damper including a guillotine damper (gate damper). Here, the guillotine damper is electrically operated to open and takes time, but it is instantaneous to close. Each of the plurality of exhaust gas dampers may include a guillotine damper, and may be, for example, a guillotine damper for closing a round duct. In this case, since the exhaust gas damper includes the guillotine damper, the exhaust gas can be reliably prevented from passing between the exhaust gas dampers and flowing to the other.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization apparatus 20 further includes a bypass flow path for flowing the exhaust gas at the time of maintenance so that the exhaust gas does not pass through the exhaust gas damper at the time of maintenance. In this case, since the exhaust gas flows not in the exhaust gas damper but in the bypass flow path at the time of maintenance, it is possible to prevent the worker engaged in the inspection work from being in danger.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

In some embodiments, the ship desulfurization system 20 includes at least one exhaust gas damper including a guillotine damper. Then, at the time of maintenance, at least one of the main engine 12 and the auxiliary engine 14 is operated, and the guillotine damper corresponding to the main engine 12 and the auxiliary engine 14 to be operated is closed. In this case, since the guillotine dampers corresponding to the main engine 12 and the auxiliary engine 14 to be operated are closed, it is possible to prevent the worker engaged in the inspection work from being in danger.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

(Exhaust gas flow path connection to desulfurization tower)
Since the absorption tower 30 occupies a certain range in the steel plate structure 6, there is a possibility that the operation of arranging the pipes in the steel plate structure 6 may be difficult or the piping may not be arranged.

In some embodiments described above, as shown in FIGS. 3 and 4, the auxiliary gas exhaust gas introduction pipes 44 a to 44 d for introducing the exhaust gas discharged from the auxiliary engine 14 to the absorption tower main body portion 32 introduce exhaust gas. It is adapted to be connected to the tube 42. In some embodiments, the auxiliary exhaust gas introduction pipes 44c and 44d described above are connected to the side wall 34c (see FIG. 23 described later) on the other end 34b side of the exhaust gas introduction part 34 to Directly lead to exhaust gas. The above-described auxiliary gas exhaust gas introduction pipes 44 a and 44 b may be connected to the side wall 34 c on the other end 34 b side of the exhaust gas introduction part 34. In this case, the degree of freedom of the connection positions of the auxiliary gas exhaust gas introduction pipes 44a to 44d is improved, so that the auxiliary gas exhaust gas introduction pipes 44a to 44d can be connected to positions where the routing operation is easy. Moreover, it can suppress that the length dimension of waste gas introduction pipe | tube 44a-44d for auxiliary machines becomes large.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

FIG. 23 is a view for explaining the connection between the absorption tower and the exhaust gas introduction pipe of the ship desulfurization apparatus according to the embodiment of the present invention. As shown in FIG. 23, in some embodiments, the auxiliary gas exhaust gas introduction pipes 44 c and 44 d described above are side walls 32 e of the absorption tower main body 32 on the side opposite to the side to which the exhaust gas introduction part 34 is connected. The exhaust gas is directly led to the internal space 31 of the absorber body 32. Note that the auxiliary gas exhaust gas introduction pipes 44a and 44b described above may be connected to the side wall 32e, and the auxiliary gas exhaust gas introduction pipes 44a to 44d mentioned above are connected with the exhaust gas introduction portion 34 of the absorption tower main body 32. It may be connected to the side wall 32f adjacent to the side wall of the side. In this case, the degree of freedom of the connection positions of the auxiliary gas exhaust gas introduction pipes 44a to 44d is improved, so that the auxiliary gas exhaust gas introduction pipes 44a to 44d can be connected to positions where the routing operation is easy. Moreover, it can suppress that the length dimension of waste gas introduction pipe | tube 44a-44d for auxiliary machines becomes large.
The invention according to the present embodiment is also applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and less than or equal to 1: 6.0 or circular absorption towers.

  Although the configuration in which one exhaust gas inlet 33 is provided has been described in the above-described embodiments, a plurality of exhaust gas inlets 33 may be provided. Here, FIG. 24 is a view for explaining the connection between the absorption tower and the exhaust gas introduction pipe of the ship desulfurization apparatus according to one embodiment of the present invention, and FIG. 24 (a) is a schematic top view FIG. 24 (b) is a schematic front view. As shown to FIG. 24 (a), (b), the waste gas inlet 33 can also be provided in the both sides of the absorption tower 30. FIG. In this case, particularly in the rectangular absorption tower 30 having an aspect ratio of 1: 1.1 or less, when the absorption tower 30 is installed to the full width of the steel plate structure 6, the exhaust gas introduction pipe is disposed beside the absorption tower 30. There is no need for bypassing, and there is no need to manage the exhaust gas inlet for the generator.

  25 and 26 show a hull integrated desulfurization apparatus 100 according to an embodiment. FIG. 25 shows a state of being suspended by the crane 108 when the hull integrated desulfurization apparatus 100 is incorporated into the hull structure of the ship 1, and FIG. 26 is mounted on the top of the engine casing 106 described later. Indicates the status.

As shown in FIG. 25 and FIG. 26, the hull integrated desulfurization apparatus 100 includes a casing 102 which forms a part of a hull structure of a ship, and an absorption tower 104 supported by the casing 102. The absorption tower 104 desulfurizes the exhaust gas discharged from the exhaust gas generator such as the main engine 12 and the auxiliary engine 14 mounted on a ship.
The conventional ship desulfurization system is independent of the hull structure as one of the mechanicals mounted on the ship.
On the other hand, in the hull integrated desulfurization apparatus 100, the absorption tower 104 is already supported by the casing 102 which forms a part of the hull structure before being mounted on a ship. In the hull integrated desulfurization apparatus 100, the casing 102 is connected to the other hull structure of the boat on the ship.

  According to the above configuration, since the casing 102 supporting the absorption tower 104 forms a part of the hull structure, reinforcement for the purpose of extra clearance around the absorption tower 104 and vibration damping and shaking of the absorption tower 104 is provided. There is no need for parts. Therefore, the mounting structure of the absorber 104 can be made compact.

In one embodiment, as shown in FIGS. 25 and 26, the absorption tower 104 is connected by welding to a casing 102 surrounding the outer periphery of the absorption tower 104, and is integrally formed with the casing 102.
According to this configuration, the absorption tower 104 is connected to the casing 102 surrounding the outer periphery of the absorption tower 104 by welding, so the force exerted on the casing 102 from the absorption tower 104 is dispersed around the casing 102. As a result, the load of the absorber 104 originally concentrated at the base of the absorber 104 is dispersed to the casing 102, so the support structure of the absorber 104 can be made compact.

In one embodiment, as shown in FIG. 26, when the hull integrated desulfurization apparatus 100 is mounted on a ship, it is disposed above the engine casing 106. Since the absorption tower 104 is supported from the periphery by the casing 102 and a support for supporting the absorption tower 104 from below is unnecessary, there is a gap s1 between the absorption tower 104 and the engine casing 106 located below the absorption tower 104. It is formed.
According to this embodiment, the support portion for supporting the absorption tower 104 from the lower side is unnecessary, and the gap s1 can be formed, so that the liquid piping through which the absorbent stored in the engine casing 106 flows (seawater supply pipe, seawater discharge There is an advantage that pipings such as exhaust gas piping for introducing exhaust gas discharged from an exhaust gas generator such as a main engine etc. into the absorption tower 104 can be disposed in the gap s1.

In one embodiment, the casing 102 is made of a common hull material such as steel, and the exhaust gas contact portion of the absorption tower 104 is made of corrosion resistant stainless steel or alloy or the like.
In one embodiment, vibration analysis is performed with respect to the integrated desulfurization device structure, and the design structure does not resonate with the natural frequency of the main machine or the propeller.
In one embodiment, to avoid the resonance with the natural frequency of the main engine 12 or the propulsion propeller (not shown), Shofu device installation space in an upper region R ₁ of the casing 102 are provided. Further, when the region R ₂ next to the installation space of the absorption tower 104 is empty can be provided with ancillary equipment and pipes of the absorption column 104 in the region R _2.

In one embodiment, the casing 102 is formed to have a length along the width direction of the ship (the direction of arrow a in FIG. 25) larger than the length along the front-rear direction of the ship.
According to this embodiment, since the longitudinal direction of the casing 102 is disposed along the width direction of the ship 1, accordingly, the absorption tower 104 supported by the casing 102 is disposed along the width direction of the vessel. The bending stress acting on the absorption tower 104 during rolling of the ship can be reduced as compared to the absorption tower having a longitudinal direction along the bow-stern direction of the ship. Therefore, it can be set as an absorption tower which has high resistance to rolling.

In one embodiment, as shown in FIG. 25 and FIG. 26, the casing 102 is formed in a long cylindrical shape disposed so that the longitudinal direction is along the width direction of the ship, and the axial direction is along the vertical direction Be placed. As a result, the absorption tower 104 is supported by the casing 102 surrounding the outer periphery of the absorption tower 104, so that the force applied from the absorption tower 104 to the casing 102 is dispersed around the casing 102. Therefore, since the load of the absorption tower 104 originally concentrated at the base of the absorption tower 104 is dispersed to the casing 102, the support structure of the absorption tower 104 can be made compact.
In FIG. 25 and FIG. 26, for visualization of the casing 102, the wall on the front side of the casing 102 is deleted and displayed.

The ship 1 according to one embodiment includes a hull integrated desulfurization apparatus 100 as shown in FIGS. 25 and 26, and the hull integrated desulfurization apparatus 100 forms a part of the hull structure.
According to this configuration, since the hull integrated desulfurization apparatus 100 is formed as a part of the hull structure, the reinforcement for the purpose of the extra clearance around the absorption tower 104 and the vibration damping and the upset of the absorption tower 104 is provided. There is no need for parts. Therefore, the mounting structure of the absorber 104 can be made compact.

In one embodiment, as shown in FIGS. 25 and 26, the hull structure includes an engine casing 106 positioned below the casing 102 of the hull integrated desulfurization apparatus 100, and the lower end of the outer shell wall 110 of the casing 106. Is connected to the engine casing 106 by welding.
According to this configuration, since the absorption tower 104 is supported by the casing 102 forming a part of the hull structure of the ship 1, the casing 102 can be easily disposed above the engine casing 106 having the same hull structure. . Further, since the distance between the casing 102 on which the absorption tower 104 is supported and the engine casing 106 is short, the length of exhaust gas piping for introducing the exhaust gas discharged from the main engine accommodated in the engine casing 106 into the absorption tower 104 It can be shortened.

  In one embodiment, as shown in FIG. 25 and FIG. 26, the stiffeners 114 are installed on the ribs 112 provided in the vertical direction on the inner side surface of the outer shell wall 110 of the casing 102 or the outer shell wall 110 disposed opposite to each other. The positions of the first reinforcing member formed by (see FIG. 27) and the second reinforcing member formed by the rib 118 or the stiffener 120 provided on the engine casing 106 coincide with each other. That is, the rib 112 or stiffener 114 is placed on the rib 118 or stiffener 120 and supported by the rib 118 or stiffener 120.

In one embodiment, as shown in FIG. 27, stiffeners 114 are bridged between opposing shell walls 110 of the casing 102. The stiffener 120 is mounted between the shell walls 110 inside, for example, the upper region of the mutually facing shell walls 116 of the engine casing 106. The ribs 118 provided on the engine casing 106 are provided with a plurality of ribs 118 in parallel.
According to this embodiment, since the positions of the first reinforcing member and the second reinforcing member coincide with each other when viewed from the vertical direction, the support strength of the engine casing 106 with respect to the casing 102 supporting the absorption tower 104 is enhanced. And the casing 102 can be stably supported.

In one embodiment, as shown in FIG. 25, at the lowermost portion of the casing 102, the engine casing 106 is formed by inclining specific ribs 112a and 112b (see FIG. 25) of the ribs 112 constituting the outer shell wall 110. The position of the rib 118 or the stiffener 120 which constitutes the second reinforcing member of the present invention is made to correspond. Thereby, the support strength of the casing 102 by the engine casing 106 can be enhanced.
In one embodiment, the stiffener 114 shown in FIG. 27 may be inclined to match the position of the rib 118 or stiffener 120 that constitutes the second reinforcing member. Thereby, the support strength of the casing 102 by the engine casing 106 can be enhanced.

In one embodiment, as shown in FIG. 28, in a state where the hull integrated desulfurization apparatus 100 is mounted on the ship 1, the absorption tower 104 is an exhaust gas pipe 122 of an exhaust gas generator such as the main engine 12 and the auxiliary engine 14. Located above the
According to this embodiment, since the absorption tower 104 is located above the exhaust gas pipe 122 of the exhaust gas generator, the length of the exhaust gas pipe 122 for introducing the exhaust gas discharged from the exhaust gas generator into the absorber 104 can be shortened. .

In one embodiment, the tubing 124 is supported by the casing 102, as shown in FIG. The pipe 124 includes at least one of a gas pipe connecting the exhaust gas pipe 122 of the exhaust gas generator and the exhaust gas inlet of the absorption tower 104 or a liquid pipe through which the absorption liquid used in the absorption tower 104 flows.
According to this embodiment, by supporting the above-mentioned piping with the casing 102 which forms a part of the hull structure of the ship 1, it is possible to make the supporting structure of the accessory of the absorption tower 104 including these piping compact. In addition, even if the positional relationship between the position of the absorption tower 104 and the main engine changes depending on the ship, only the length of the pipe is changed, so that modularization can be performed and cost reduction can be achieved.

In one embodiment, as shown in FIG. 30, the hull structure of the vessel 1 is welded to the casing 102 adjacent to the casing 102 in the width direction of the vessel 1 (in the direction of the arrow a). And other hull structures 103.
According to this embodiment, since the hull structure disposed in the width direction of the ship 1 is divided by the casing 102 supporting the absorption tower 104 and the other hull structure 103, the crane 108 separately carries the inside of the vessel separately. Can be transported to As a result, the weight of the hull integrated desulfurization apparatus 100 becomes excessive, and a situation in which the crane capacity is insufficient can be avoided.

  In some embodiments, as shown in (A) and (B) of FIG. 31, a rectangular space s2 in a plan view is formed between the frames 126 configuring the casing 102. FIG. 31 (A) shows an example in which the absorption tower 104 (104a) whose outer shape is a plan view is disposed in a rectangular space s2 in plan view, and FIG. 31 (B) shows the planar view in a rectangular space s2 And a circular absorption tower 104 (104b) is disposed. FIG. 31 (C) is an example in which the outer periphery of the absorption tower 104 (104b) shown in FIG. 31 (B) is fixed to the frame 126 at a plurality of welding points p. Thus, the absorption tower 104 (104a, 104b) can also be installed in the casing 102 of the hull integrated desulfurization apparatus 100.

  FIG. 32 is a process chart showing a method of assembling the hull integrated desulfurization apparatus 100 according to an embodiment into a ship. As shown in FIG. 32, first, the hull integrated desulfurization apparatus 100 including the casing 102 forming part of the hull structure of the ship and the absorption tower 104 is formed on land (desulfurization apparatus forming step S10). Next, the hull integrated desulfurization apparatus 100 formed in the desulfurization apparatus forming step S10 is attached to the ship (ship installation step S12). In the desulfurization device forming step S10, the casing 102 of the hull integrated desulfurization device 100 and the hull structure other than the casing 102 of the ship 1 are joined.

  According to the above method, in the desulfurization apparatus formation step S10, the hull integrated desulfurization apparatus 100 is formed in advance in a land factory or the like, and the hull integrated desulfurization apparatus 100 is mounted on the vessel after the vessel enters. . This will shorten the installation period for the installation of absorbers on ships. Moreover, the absorption tower 104 and the casing 102 can be simultaneously manufactured separately in parallel before being integrated, whereby the construction period of the hull integrated desulfurization apparatus 100 can be shortened.

In one embodiment, in the desulfurization apparatus formation step S10, the absorption tower 104, the casing 102, and the absorption tower 104 are assembled together in order from the lower section to the upper section of the hull integrated desulfurization apparatus 100.
According to this embodiment, assembly is facilitated by assembling the lower section to the upper section of the hull integrated desulfurization apparatus 100 in order, and the construction period is shortened by assembling the absorption tower 104 and the casing 102 simultaneously in parallel. it can.

In one embodiment, as shown in FIG. 33, in the forming step, the hull integrated desulfurization apparatus forms an aggregate of a plurality of divided sections 100a, 100b and 100c which are divided in the vertical direction. In the vessel mounting step S12, the hull integrated desulfurization apparatus 100 is attached to the vessel by sequentially stacking the divided sections 100a to 100c on the vessel 1.
According to this embodiment, the ship integrated step type desulfurization apparatus 100 forms an aggregate of a plurality of divided sections 100a to 100c divided in the vertical direction, so that the crane 108 is used for each divided section in the ship mounting step S12. It can be transported into the ship. By this, the situation where the transport capacity of the crane 108 is insufficient can be avoided.

  In this embodiment, split sessions 104a, 104b and 104c of absorber 104 are assembled in split sections 100a-100c, respectively. Each split session 104a-104c is integrally assembled to the absorber 104 when the split sections 100a-100c are assembled onboard.

  As mentioned above, although the preferable form of this invention was demonstrated, this invention is not limited to said form, A various change in the range which does not deviate from the objective of this invention is possible. The ship desulfurization apparatus according to the present invention can be suitably used for a very large container ship (ULCS) having a container loading volume of, for example, 10,000 TEU or more, but the container loading volume does not exceed 10,000 TEU. It can also be used for large-sized or medium-sized or small-sized container ships, cargo ships such as tankers other than container ships and bulk carriers, or general commercial ships such as passenger ships.

  The present invention also includes a mode in which the above-described embodiments are appropriately combined. For example, the absorption tower 30 may be provided with an internal space confirmation device 80 and an exhaust gas cooling device 85. Further, among the inventions according to the above-described embodiments, there are inventions applicable to rectangular absorption towers having an aspect ratio of more than 1: 1.1, and not more than 1: 6.0. There is also an invention applicable to a round absorption tower. These inventions may be applied to rectangular absorption towers having an aspect ratio of more than 1: 1.1 and not more than 1: 6.0 or round absorption towers.

  According to one embodiment, it is possible to realize a ship desulfurization device that is excellent in the disposition when placed on a ship such as a super large ship.

DESCRIPTION OF SYMBOLS 1 ship 2 ship body 3 upper deck 4 residential area 6 steel plate structure 8, 8A, 8B horizontal partition wall 9 container 10 engine room 12 main engine 14 auxiliary engine 20 ship desulfurization apparatus 30 absorption tower 31 internal space 31a storage space 31b lower side Internal space 31c Upper side Internal space 31d Outlet side internal space 32 Absorber body 32a, 32b Longitudinal wall surface 32c, 32d Short wall surface 33 Exhaust gas inlet 34 Exhaust gas inlet 34A Slant 34B Vertical 34a One end 34b Other end 35 Filled bed 35A Filled material 36 Exhaust gas outlet 37 Mist eliminator 38, 38A, 38B Spraying device 38a1 Longitudinal water sprinkling pipe 38a2 Sprinkler nozzle 38b1 Short side sprinkling pipe 38b2 Sprinkler nozzle 39a one side end 39b the other side end 39c Side end 40 of one side exhaust gas introduction device 42 exhaust gas introduction pipe 43 exhaust gas discharge pipe 4 a to 44 d auxiliary exhaust gas introduction pipe 45 exhaust gas inflow pipe 46 exhaust gas chimney part 48a to 48 d auxiliary gas exhaust pipe 50 seawater supply device 52 first seawater suction box 52a drainage dilution pump 54 second seawater suction box 54a seawater supply pump 56 seawater introduction pipe 58 seawater supply pipe 59 seawater discharge pipe 60 exhaust heat recovery device 70 cross member 70A cross beam member 70B roof plate member 80 internal space confirmation device 80A visual recognition window 81 pH adjuster 81A lock alkaline agent 82 partition 83 ceiling 83 84 Anticorrosion Layer 85 Exhaust Gas Cooling Device 86 Emergency Tank 87 Emergency Cooling Device 88 Emergency Cooling Water Channel 89 Emergency Bypass Device 90 Emergency Opening Valve 91 Fixing Member 92 Wall Reinforcement Member 93 Partition Wall 94 Cooling Water Control Valve 95 Pressure Gauge 96 cleaning solution supply device 97A cleaning solution supply line 97B bypass line 98 control valve 99 flow rate Total 100 Hull-integrated desulfurization device 102 Casing 103 Hull structure 104 Absorption tower 106 Engine casing 108 Crane 110, 116 Outer wall 112, 112a, 112b, 118 Rib 114, 120 Stiffener 122 Exhaust gas piping 124 Piping 126 Frame p Welding point

Claims (2)

A ship desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship, comprising:
An absorption tower body defining an inner space having a longitudinal direction, and an exhaust gas inlet port communicating with the inner space formed at an end on one side in the longitudinal direction;
An exhaust gas introducing device for introducing the exhaust gas discharged from the exhaust gas generating device to the absorber main body;
A spraying device capable of spraying a cleaning solution to the exhaust gas flowing in the internal space;
The spray device includes a water spray pipe extending to the internal space of the absorber body, and a plurality of water spray nozzles disposed at predetermined intervals in the water spray pipe.
When the maximum length of the absorption tower main body in the longitudinal direction of the internal space is L, and the maximum width of the absorption tower main body in the lateral direction orthogonal to the longitudinal direction of the internal space is W, The desulfurization apparatus for ships whose ratio (W: L) of the said largest width W and the said largest length L is the range of more than 1: 1.1 and 1: 6.0 or less.   A ship equipped with the ship desulfurization apparatus according to claim 1.

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