JP6474935B1 - Ship desulfurization apparatus and ship - Google Patents

Abstract

Provided is a ship desulfurization device capable of lowering the temperature of exhaust gas introduced into an exhaust gas introduction part and reducing the volume of exhaust gas introduced into the exhaust gas introduction part. A ship desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship, wherein the absorption tower defines an internal space and has an exhaust gas introduction port communicating with the internal space. An absorption tower including a main body and an exhaust gas inlet connected to the exhaust gas inlet, and an exhaust gas cooling device capable of spraying cooling water to the exhaust gas before being introduced into the internal space after being introduced into the exhaust gas inlet The exhaust gas cooling device has a cooling water nozzle configured to eject the cooling water toward the upstream side in the flow direction of the exhaust gas. [Selection] FIG.

Description

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

  With recent tightening of exhaust gas regulations on ships, the use of fuel oil with a sulfur content of 0.1% or less, or alternative measures having the same effect, is required 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 that have the same effect, will be required even in general sea areas. Conventionally, for example, ultra large vessels such as ULCS (Ultra Large Container Ship) responded by using low-sulfur fuel oil with low sulfur content. Expected to increase.

The amount of exhaust gas discharged from the main engine of a very large ship (the amount of exhaust gas at 100% load) reaches, for example, 200,000 Nm ³ / h or more. Moreover, in order to respond to various electric power demands etc. in a very large ship, a plurality of power generation engines and boilers are installed. For this reason, a desulfurization apparatus mounted on a super-large ship needs an absorption tower having a large passage area in order to desulfurize a large amount of exhaust gas discharged from these main engines and a plurality of power generation engines / boilers. When trying to cope with this with a conventional desulfurization device for a main engine mounted on a relatively small ship such as a bulk carrier, it becomes necessary to arrange a plurality of absorption towers, and the load is reduced when placing in the ship, or Design restrictions and changes such as expansion of hull dimensions will occur.

  Further, a conventional desulfurization apparatus for a relatively small main engine uses a round (circular) absorption tower, and it is conceivable to enlarge the round absorption tower for a very large ship. However, since a round absorption tower tends to generate a dead space when arranged in a ship as compared with a square absorption tower or the like, there arises a problem that the arrangement efficiency deteriorates when arranged in the ship.

  Therefore, in order to solve the above problem, it is conceivable to adopt a square absorption tower that has a proven track record in a desulfurization apparatus for terrestrial use such as plant facilities and factories as an absorption tower of a desulfurization apparatus for very large ships. For example, Patent Document 1 discloses a wet cleaning apparatus for removing contaminants such as particulate substances, harmful gases, acidic compounds, and malodors generated in manufacturing processes, industrial processes, commercial processes, and the like, which are rectangular. An example of a cleaning apparatus having a cleaning tank (absorption tower) is disclosed.

Japanese Patent No. 5631985 JP 9-239233 A

  By the way, in many of the rectangular absorption towers used in the desulfurization equipment for land use, when 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 Further, 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 a direction orthogonal to the exhaust gas introduction direction. This is because the gas flow rate is greatly different between the front side (exhaust gas inlet side) and the back side (opposite side of the exhaust gas inlet) in the longitudinal direction when it is formed in a shape having a longitudinal direction along the exhaust gas introduction direction. This is because it becomes difficult to flow the exhaust gas uniformly in the absorption tower. If the flow of the exhaust gas in the absorption tower becomes non-uniform, the desulfurization performance may be lowered, such as unevenness in the desulfurization process in the absorption tower.

  In order to cope with such a problem, in the above-described cleaning apparatus of Patent Document 1, 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 introduced into a gas distribution chamber provided in the lower part of the absorption tower through the exhaust gas duct, so that the exhaust gas flows uniformly in the absorption tower.

  However, when such an absorption tower disclosed in Patent Document 1 is to be diverted to an absorption tower for a super-large ship, there are some problems in arrangement restrictions as described below.

  First, the planar shape of the absorption tower disclosed in Patent Document 1 is recognized to be approximately square (W: L = 1: 1). For example, in some types of super-large vessels such as ULCS, the direction of exhaust gas introduction In some cases, an absorption tower having a planar shape having a longitudinal direction along the direction has a better disposition.

  Secondly, as described above, the cleaning tank disclosed in Patent Document 1 includes an exhaust gas duct extending vertically in the absorption tower and a gas distribution chamber provided at the lower portion of the cleaning tank. Yes. For this reason, there exists a problem that the volume of an absorption tower will become large by the part which provides these exhaust gas ducts and gas distribution chambers.

  Thirdly, the marine absorption tower is often provided so as to protrude upward from the upper deck, while the main engine, which is the main exhaust gas emission source, is disposed in the engine room located below the hull. That is, the absorption tower is often arranged above the main engine in the ship. For this reason, in the case of the absorption tower of Patent Document 1, it is necessary to guide the exhaust gas discharged from the main engine not only to the side end portion of the absorption tower but to the upper end portion beyond the side end portion. There is a problem that the extension becomes longer.

  Patent Document 2 discloses a desulfurization apparatus having a square absorption tower mounted on a ship (FIGS. 3 and 4). However, the absorption tower of this Patent Document 2 is mounted not on a tanker (main ship) but on a barge ship towed by the main ship, and there are problems in arrangement restrictions when the desulfurization device is arranged on the ship (main ship), and No means for solving this is disclosed.

The present invention has been invented under the background art as described above, and the object of at least one embodiment of the present invention is excellent in arrangement property when arranged on a vessel such as a super-large vessel. Another object 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 device that can lower the temperature of the exhaust gas guided into the exhaust gas introduction unit and reduce the volume of the exhaust gas guided into the exhaust gas introduction unit. Is to provide.

(1) A ship desulfurization apparatus according to an embodiment of the present invention includes:
A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship,
An absorption tower including an absorption tower main body portion in which an exhaust gas introduction port that defines an internal space and communicates with the internal space is formed, and an exhaust gas introduction portion connected to the exhaust gas introduction port;
An exhaust gas cooling device that is introduced into the exhaust gas introduction part and can spray cooling water on the exhaust gas before being introduced into the internal space,
The exhaust gas cooling device has a cooling water nozzle configured to eject the cooling water toward an upstream side in the flow direction of the exhaust gas.

  The ship desulfurization apparatus according to the embodiment described in the above (1) is introduced into the exhaust gas introduction unit, and the exhaust gas before being introduced into the internal space is sprayed with the cooling water by the exhaust gas cooling apparatus, so that the exhaust gas The temperature of the exhaust gas guided into the introduction part can be lowered, and the temperature rise in the exhaust gas introduction part can be suppressed. Moreover, since the volume of the exhaust gas led into the exhaust gas introduction part can be reduced by spraying the cooling water with the exhaust gas cooling device, a large amount of exhaust gas can be treated in the absorption tower. Further, since the cooling water nozzle of the exhaust gas cooling device 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 introduction part can be lowered before reaching the cooling water nozzle. It is possible to suppress the cooling water nozzle from being damaged by the heat of the exhaust gas.

(2) In some embodiments, in the ship desulfurization apparatus according to (1), the cooling water is seawater introduced into the ship.
The ship desulfurization apparatus according to the embodiment described in the above (2) uses the seawater introduced into the ship as the cooling water, thereby reducing the consumption of water such as industrial water required during the navigation of the ship. Can be suppressed.

(3) In some embodiments, in the marine vessel desulfurization apparatus according to (1) or (2), the exhaust gas introduction unit is configured such that the exhaust gas flows downward from above in the vertical direction. Yes. The cooling water nozzle is configured to inject cooling water upward.

If the exhaust gas introduced into the exhaust gas introduction part is sprayed with cooling water by an exhaust gas cooling device to lower the temperature of the exhaust gas, sulfurous acid may be generated. In addition, when seawater is used as the cooling water, salt may precipitate from the seawater due to temperature rise. If sulfurous acid or salt adheres to the cooling water nozzle, the spraying performance may be reduced.
The cooling water nozzle in the embodiment described in the above (3) is configured to inject the cooling water upward, which is the direction opposite to the flow direction of the exhaust gas. The cooling water jetted upward comes into contact with the exhaust gas above the cooling water nozzle, drops the temperature of the exhaust gas, and then drops onto the cooling water nozzle. The cleaning liquid dropped on the cooling water nozzle can wash away sulfurous acid and salt adhering to the cooling water nozzle. In addition, by maintaining the wet state of the cooling water nozzle by the cleaning liquid falling on the cooling water nozzle, it is possible to suppress the attachment of sulfurous acid and salt to the cooling water nozzle, and the temperature of the cooling water nozzle increases. Can be suppressed.

(4) In some embodiments, in the ship desulfurization device according to any one of (1) to (3), the exhaust gas cooling device includes a cooling water nozzle for spraying the cooling water, and the cooling water. A cooling water pipe for supplying the cooling water to the nozzle, and a cooling water control valve provided in the cooling water pipe, wherein the amount of the cooling water sprayed from the cooling water nozzle can be controlled. And a cooling water control valve.

  The pressure of the cooling water on the primary side that is upstream of the cooling water control valve in the cooling water pipe line varies greatly depending on factors such as the number of operating pumps. Due to the variation factors, the amount of the cooling water sprayed from the cooling water nozzle varies greatly, and there is a risk that the exhaust gas introduced into the exhaust gas introduction part will be insufficiently cooled. On the other hand, the exhaust gas cooling device in the embodiment of the above (4) controls the amount of cooling water sprayed from the cooling water nozzle by the cooling water control valve, so that the exhaust gas introduced into the exhaust gas introduction section is controlled. It can be cooled sufficiently.

(5) In some embodiments, the marine vessel desulfurization device according to (4) above, further including a pressure gauge provided on the downstream side of the cooling water control valve of the cooling water pipe, Is configured to adjust the opening so that the pressure of the cooling water detected by the pressure gauge becomes constant.

  By making the cooling water pressure at the downstream side of the cooling water control valve constant by the cooling water control valve, the cooling water pressure when jetting from the cooling water nozzle is also constant, so it is always constant from the cooling water nozzle. More than the amount of cooling water will be sprayed at a certain height. Since the exhaust gas cooling device in the embodiment of (5) can always spray a certain amount or more of cooling water from the cooling water nozzle, the exhaust gas guided into the exhaust gas introduction part can be continuously cooled.

(6) Moreover, the ship which concerns on one Embodiment of this invention is carrying the ship desulfurization apparatus in any one of said (1) to (5).

According to at least one embodiment of the present invention, it is possible to provide a marine vessel desulfurization apparatus that is excellent in arrangement when arranged on a vessel such as a super-large vessel.
In addition, according to at least one embodiment of the present invention, there is provided a marine vessel desulfurization apparatus capable of lowering the temperature of exhaust gas guided into the exhaust gas introduction unit and reducing the volume of exhaust gas guided into the exhaust gas introduction unit can do.

It is the perspective view which showed the ship concerning one Embodiment of this invention. (A) is the figure which showed the dimension of the 40 foot container, (b) is the figure which expanded and showed the periphery of the steel plate structure in the ship shown in FIG. It is the perspective view which showed the ship desulfurization apparatus 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 ship desulfurization apparatus concerning one Embodiment of this invention, it is the figure which showed the examination result about the planar shape of the internal space of an absorption tower main-body part. In the ship desulfurization apparatus concerning one Embodiment of this invention, it is a figure for demonstrating the crossing 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 absorption tower main-body part in the desulfurization apparatus for ships concerning one Embodiment of this invention, and a desulfurization performance parameter. It is the table | surface which showed the result of having examined the relationship between the shape (aspect ratio) of the internal space of the absorption tower main-body part in the desulfurization apparatus for ships concerning one Embodiment of this invention, and a desulfurization performance parameter. It is a top view for demonstrating the arrangement conditions of the watering nozzle in the internal 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 ship desulfurization apparatus 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 the A direction shown in FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which showed the absorption tower of the ship desulfurization apparatus concerning one Embodiment of this invention, Comprising: An example of the absorption tower (a liquid column tower, a spray tower, a tray type absorption tower, etc.) without a packed bed is shown. It is a figure. It is a perspective view (conceptual diagram) for demonstrating the filler in one Embodiment of this invention. It is the schematic for demonstrating the anticorrosion 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 of the desulfurization apparatus for ships concerning one Embodiment of this invention, and a steel plate structure. 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 of the ship desulfurization apparatus concerning one Embodiment of this invention, and waste gas introduction pipe | tube. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the connection of the absorption tower of the ship desulfurization apparatus concerning one Embodiment of this invention, and waste gas introduction pipe, Comprising: (a) is a schematic top view, (b) is a schematic front view. is there. It is a perspective view which shows the case where the hull integrated desulfurization apparatus which concerns on one Embodiment is assembled in a hull structure. It is a perspective view which shows the case where the hull integrated desulfurization apparatus which concerns on one Embodiment is assembled in a hull structure. It is a top view of a casing containing a hull integrated desulfurization device concerning one embodiment. It is a mimetic diagram showing the case where the hull integrated desulfurization device concerning one embodiment is assembled into a hull structure. It is a mimetic diagram showing the case where the hull integrated desulfurization device concerning one embodiment is assembled into a hull structure. It is a mimetic diagram showing the case where the hull integrated desulfurization device concerning one embodiment is assembled into a hull structure. (A), (B) and (C) are schematic views showing several hull-integrated desulfurization apparatuses. It is process drawing which shows the assembly | attachment method of the hull integrated desulfurization apparatus which concerns on one Embodiment. It is a schematic diagram which shows the assembly | 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 in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Absent.
For example, expressions expressing relative or absolute arrangements such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly In addition to such an arrangement, it is also possible to represent a state of relative displacement with an angle or a distance such that tolerance or the same function can be obtained.
For example, an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
For example, expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed.
On the other hand, the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements.
In the following description, the same components may be denoted by the same reference numerals and detailed description thereof may be omitted.

FIG. 1 is a perspective view showing a ship according to an embodiment of the present invention. A ship 1 according to an embodiment of the present invention is, for example, a very large ship in which an exhaust gas amount of a main engine (exhaust gas amount 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 capacity of 10,000 TEU or more called ULCS (Ultra Large Container Ship).

  As shown in FIG. 1, the ship 1 includes a ship body 2, a residential area 4 that protrudes from the upper deck 3 at a position slightly forward from the center in the bow-stern direction, and a stern side of the residential area 4. And a steel plate structure 6 provided so as to protrude from the upper deck 3 at the position. Here, the steel plate structure 6 is called a chimney or an engine casing. Further, a plurality of transverse bulkheads 8 extending in the starboard-portal direction, which is a direction orthogonal to the bow-stern direction, are provided in the hold of the ship main body 2 at intervals. Thereby, the ship main body 2 is divided into a plurality of regions whose basic unit is a length capable of accommodating the 40-foot container 9 along the longitudinal direction of the container in the bow-stern direction.

  FIG. 2 (a) 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. 2B, the steel plate structure 6 is provided between a pair of adjacent horizontal partition walls 8A and 8B. An engine room 10 is formed inside the ship main body 2 that is vertically below the steel plate structure 6. The engine room 10 includes a main engine 12 including a marine diesel engine for imparting a propulsive force to the ship 1 and a main engine boiler for driving a main engine turbine, and various thermal demands in the ship 1. A plurality of auxiliary engines 14 composed of auxiliary boilers for responding to the demand, auxiliary engines for responding to electric power demand and the like are installed. The main engine 12 and the auxiliary engine 14 correspond to an exhaust gas generator mounted on the ship 1 according to one embodiment of the present invention.

  The steel plate structure 6 is a structure for releasing 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 starboard-port side direction (width direction) of the ship 1. It is formed in a long cylinder shape having a longitudinal direction. A ship desulfurization apparatus 20 for desulfurizing exhaust gas discharged from the main engine 12 and the auxiliary engine 14 mounted on the ship 1 is disposed inside the steel plate structure 6. In some embodiments, the inner width of the steel plate structure 6 (the length in the direction perpendicular to the longitudinal direction) 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 limited, and can be set, for example, in the range of 5 m to 20 m.

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

  FIG. 5 is a schematic view showing an absorption tower of a marine vessel 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 portion 32, an exhaust gas introduction portion 34, and an exhaust gas outlet portion 36. The absorption tower main body 32 defines an internal space 31 having a longitudinal direction therein. An exhaust gas inlet 33 communicating with the internal space 31 (lower internal space 31b) is formed at one side end 39a 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 through the lower internal space 31b from the one side end 39a toward the other side end 39b, and then moves up the internal space 31. It flows.

  In the illustrated embodiment, in the internal space 31, a filling layer 35 that separates the lower internal space 31b and the upper internal space 31c is formed at a position above the lower internal space 31b. In the filling layer 35, for example, many regular packings are stacked in layers. In addition, a spraying device 38 for spraying a cleaning liquid (for example, seawater or fresh water) to the internal space 31 is disposed at a position above the packed bed 35. And it is comprised so that the sulfur content contained in exhaust gas may be removed by sprinkling cleaning liquid with respect to the exhaust gas which passes the filled layer 35, and making exhaust gas and cleaning liquid contact gas-liquid.

  In the internal space 31, a mist eliminator 37 is disposed at a position above the upper internal space 31c to separate the upper internal space 31c from the outlet 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 that has passed through the mist eliminator 37 is discharged to the outside of the ship 1 from the exhaust gas deriving unit 36 connected to the uppermost part of the absorption tower main body 32 via the outlet side internal space 31d.

  Further, the absorption tower main body 32 is formed with a storage space 31 a in which the sprayed cleaning liquid sprayed on the exhaust gas guided to the internal space 31 is stored. In the illustrated embodiment, the storage space 31 a is formed below the lower 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 ship desulfurization apparatus 20 is further provided with the seawater supply apparatus 50 for supplying seawater with respect to the spraying apparatus 38 mentioned above. The seawater supply device 50 includes a wastewater dilution pump 52a, a seawater supply pump 54a, a drainage pipe 56, a seawater supply pipe 58, and a seawater discharge pipe 59. And it is comprised so that the seawater introduced into the inside of the ship main body 2 by the seawater supply pump 54a may be supplied to the spraying device 38 via the seawater supply pipe 58. In addition, 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 through the drainage pipe 56. In the illustrated embodiment, each of the plurality of drainage dilution pumps 52 a is connected to a common first seawater suction box 52. Similarly, each of the plurality of seawater supply pumps 54 a is connected to a 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 absorption tower main body 32 will be described in detail with reference to FIG. In FIG. 6, the symbol L indicates the length of the internal space 31 (length in the longitudinal direction), and the symbol W indicates the width of the internal space 31 (length in the direction orthogonal to the longitudinal direction). Reference sign D is a converted diameter of a circular cross section having a cross-sectional area of the same size as a rectangular cross section having a cross-sectional area of length L and width W.
In the embodiment shown in FIG. 6, the planar shape of the internal space 31 of the absorption tower main body 32 has a pair of long wall surfaces extending in parallel with each other, a pair of short wall surfaces extending in parallel with each other, However, the planar shape of the internal space 31 is not limited to a rectangular shape, and a rectangular shape or an elliptical shape having a longitudinal direction is used as long as the effect of the present invention is achieved. Further, it may be formed in an oval shape or the like.

  FIG. 6 is a diagram showing the examination results of the planar shape of the internal space of the absorption tower body in the marine vessel desulfurization apparatus according to the embodiment of the present invention. In the tables shown in FIGS. 6A to 6C, “placeability” means ease of layout when placing the absorption tower 30 on the ship 1 for each planar shape, Evaluation is performed with two items of “deflowability”, which means the uniformity of exhaust gas flow in the internal space 31 of the absorption tower 30.

In the evaluation regarding “arrangement”, the arrangement was evaluated in four stages of ◎, ○, Δ, and X in order from the highest, based on the following evaluation criteria. This is because, when the maximum width W in the short direction is smaller than the converted diameter D, for example, when the absorption tower 30 is arranged in a site having an elongated shape like the inside of the steel plate structure 6, the arrangement is It is based on the idea that it is excellent in performance.
(Evaluation criteria)
◎… (W / D) <0.50
○ ... 0.50 ≦ (W / D) <0.75
Δ ... 0.75 ≦ (W / D) <0.90
× ... 0.90 ≦ (W / D)

FIG. 9 is a graph showing the relationship between the shape of the absorption tower internal space (aspect ratio L / W) 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 is expressed by logarithm. FIG. 10 is a table showing the results of examining the relationship between the shape (aspect ratio) of the internal space of the absorption tower main body and the desulfurization performance parameter in the ship desulfurization apparatus according to the embodiment of the present invention. FIG. 11 is a plan view for explaining the arrangement conditions of the watering nozzles in the internal space of the absorption tower body.
The relationship between the shape of the internal space 31 of the absorption tower main body 32 and the deflowability was examined using desulfurization performance parameters defined below.
Desulfurization performance parameter = Circumference ratio α x Interference nozzle number ratio β
α: Inverse ratio of circumference to reference condition (L / W = 1) = circumference in reference condition / periphery in aspect ratio to be studied β: reference condition with respect to the number of interference nozzles Ratio = number of interfering nozzles at the aspect ratio to be examined / number of interfering nozzles under the reference conditions

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

The interference nozzle refers to a watering nozzle having watering nozzles adjacent to each other in four directions. That is, as shown in FIG. 11, a plurality of rows of water spray nozzles 71 are arranged in the internal space 31 of the absorption tower main body 32 along the longitudinal direction and the width direction, respectively, and the plurality of water spray nozzles 71 in a lattice shape as a whole. Is arranged, the watering nozzle 71b located inside the range 71A excluding the watering nozzle 71a arranged on the outermost peripheral side becomes the interference nozzle described above.
If the number of interference nozzles increases in the case of the same cross-sectional area, the number of places where the desulfurization liquid ejected between adjacent watering nozzles interferes (overlaps) increases, which is an acceleration factor for improving the desulfurization performance. Because of this promotion factor, the interference nozzle number ratio β is defined by the ratio with the reference condition (L / W = 1). The number of nozzles was calculated by assuming a case where the nozzles are arranged in a grid using a predetermined nozzle pitch (0.5 m in this embodiment), and rounded to an integer when a fraction was obtained.

  As shown in FIG. 9, as the aspect ratio L / W is larger than 1 under the condition of the same cross-sectional area, the circumference 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 when the L / W is 6.0 or more. Therefore, it was determined that there are two inflection points, L / W = 2.0 and 6.0.

In the evaluation regarding “desulfurization”, the evaluation was made in four stages of ◎, ○, Δ, and X in descending order of the desulfurization based on the following evaluation criteria. 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. In addition, the uniformity of the exhaust gas flow in the absorption tower 30 was evaluated from the above-described examination results based on the following examination conditions. As shown in FIG. 9, if 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. . Further, 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. Also, when the aspect ratio exceeds 3 and is 6 or less, 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 is drastically decreased for those having an aspect ratio exceeding 6, and the uniformity of the exhaust gas flow in the absorption tower 30 exhibits the required desulfurization performance. It is considered that the allowable range above is exceeded. Therefore, the upper limit of the aspect ratio is set to 6.
(Evaluation criteria)
◎ ... W: L = 1: 1.1 and 1: 2.0 or less ○ ... W: L = 1: 2.0 and 1: 3.0 or less Δ ... W: L = 1 More than 3.0 and less than or equal to 1: 6.0 × W: L = 1: more than 6.0 (review conditions)
Inlet gas flow velocity = 2 to 20 m / s
Absorption tower flow velocity = 1 to 5 m / s
Water spray amount = 30 to 200 m ³ / m ² · h

Then, “comprehensive evaluation” is performed based on the evaluation results for the two items of “placement” and “outflow” described above. In “Comprehensive evaluation”, the evaluation was made in three stages of “excellent”, “good”, and “good” in order from the highest overall evaluation based on the following evaluation criteria.
Excellent: ◎ is one or more items, and there is no △ and × Good: ○ is two items Possible: △ is one or more items, and there is no x Impossible ... x is one or more items

  As shown in FIGS. 6A to 6C, the planar shape of the internal space 31 is in the range of W: L = 1: 1.5 and 1: 2.0 or less in the comprehensive evaluation. It was rated as “excellent”. The evaluations of “configuration” and “desulfurization” are in a trade-off relationship with each other, but by setting W: L within this range, the balance is excellent in both the configuration and deflowability. A good marine vessel desulfurization apparatus 20 can be provided.

Subsequently, W: L = 1: 2.0 and a range of 1: 3.0 or less were evaluated as “good” in the comprehensive evaluation. Subsequently, W: L = 1: 3.0 and a range of 1: 6.0 or less was evaluated as “good” in the comprehensive evaluation.
In addition, although W: L = 1: 1.1 or less, although it was excellent in "desulfurization property", since it was inferior to "positionality", it was evaluated as "impossible". Further, as described above, W: L = 1: 6.0 or more cannot ensure the uniformity of the exhaust gas flow in the absorption tower 30 and is inferior in “desulfurization”, so “impossible”. It was evaluated.

  As described above, the above-described ship desulfurization apparatus 20 according to the embodiment of the present invention defines the internal space 31 having the longitudinal direction, and the internal space 31 (lower internal space) at the side end 39a on one side in the longitudinal direction. 31b includes an absorption tower 30 including an absorption tower main body 32 in which an exhaust gas inlet 33 communicating with 31b) is formed. That is, the internal space 31 of the absorption tower main body 32 is configured to have a longitudinal direction along the exhaust gas introduction direction. For this reason, since it is hard to produce a dead space compared with the conventional round (circular) absorption tower, it is excellent in the arrangement | positioning property at the time of arrange | positioning in the ship 1. FIG. Further, the absorption tower 30 having a planar shape having a longitudinal direction along the exhaust gas introduction direction provides a ship desulfurization apparatus 20 having excellent disposition characteristics to the ship 1 such as the above-described ultra-large container ship. can do. In addition, the risk of exhaust gas being discharged to the outside of the absorption tower without desulfurization is reduced compared to the case where the internal space of the absorption tower main body has a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. Can do.

  Moreover, according to the ship desulfurization apparatus 20 concerning one Embodiment of this invention mentioned above, ratio (W: L) of the maximum width W and the maximum length L of the internal space 31 exceeds 1: 1.1, and 1: It is in the range below 6.0. Thus, by setting the upper limit of the ratio (W: L) of the maximum width W and the maximum length L of the internal space 31 to 1: 6.0, the non-uniformity of the exhaust gas flow in the absorption tower 30 is It can be kept within a practically acceptable range as studied by the present inventors.

In some embodiments, as shown in FIG. 6 described above, in the marine vessel 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 more than and the range of 1: 2.0 or less.
According to such an embodiment, as described above, it is possible to provide a well-balanced marine vessel desulfurization apparatus 20 that is particularly excellent in arrangement and deflowability.

In some embodiments, as illustrated in FIGS. 1 to 4 and the like described above, the absorption tower 30 is configured 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. 1 is mounted.
According to such an embodiment, the absorption tower 30 having a longitudinal direction along the width direction of the ship 1 is superior in arrangement to the ship 1 such as the above-described super-large container ship. An apparatus 20 can be provided.

  Moreover, according to such embodiment, since the absorption tower main-body part 32 can be comprised so that it may have a longitudinal direction along the width direction of the ship 1, it is a longitudinal direction along the bow-stern direction of the ship 1. Since the bending stress acting on the absorption tower when the ship 1 rolls (rolling) can be reduced as compared with the absorption tower having the above, the absorption tower 30 having high resistance to rolling can be obtained.

  In some embodiments, as shown in FIGS. 1 to 4 and the like described above, the ship 1 described above transmits the exhaust gas discharged from the exhaust gas generation device (the main engine 12 and the auxiliary engine 14) to the outside of the ship 1. It is the steel plate structure 6 for discharge | emission, Comprising: The steel plate structure 6 formed in the long cylinder shape which has a longitudinal direction along the width direction of the ship 1 is provided. And the absorption tower 30 is arrange | positioned inside the steel plate structure 6. 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 elliptical shape, or the like.

  According to such an embodiment, by arranging the absorption tower 30 inside the long cylindrical steel plate structure 6 having a longitudinal direction along the width direction of the ship 1, other various types mounted on the ship 1 are arranged. The influence on the arrangement plan of equipment and the like can be minimized. Therefore, retrofit with respect to the existing ship 1 becomes easy. Further, by disposing the absorption tower 30 inside the steel plate structure 6, for example, it is excellent in installation workability and maintainability compared to the case where the absorption tower 30 is disposed inside the ship 1 such as in the engine room 10. ing.

  In some embodiments, as shown in FIG. 3 and FIG. 4, the inside of the steel plate structure 6 described above is for recovering thermal energy from the exhaust gas discharged from the exhaust gas generator (main engine 12). An exhaust heat recovery device 60 is arranged. The absorption tower 30 is arranged side by side along the width direction of the exhaust heat recovery device 60 and the ship 1.

  In the illustrated embodiment, the exhaust heat recovery device 60 includes an exhaust gas economizer that generates steam using 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 device 60, and an exhaust gas exhaust pipe 43 is connected to the upper part thereof. The exhaust gas introduction pipe 42, which will be described later, branches off from the exhaust gas exhaust pipe 43, so that the exhaust gas is introduced into the absorption tower 30. The exhaust gas inflow pipe 45, the exhaust gas exhaust pipe 43, and the exhaust gas introduction pipe 42 are a part of the exhaust gas introduction device 40 for guiding the exhaust gas discharged from the main engine 12 and the auxiliary engine 14 to the absorption tower main body 32. Part.

  In the illustrated embodiment, the exhaust heat recovery device 60 is configured to have a longitudinal direction along the width direction of the ship 1, similarly to the absorption tower main body 32. Further, the internal space is formed in a 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 inside the steel plate structure 6 by arranging the absorption tower 30 and the exhaust heat recovery device 60 along the width direction of the ship 1. Compared to the case where the two are disposed at locations apart from each other, the exhaust gas introduction device 40 can be configured simply. Moreover, since the exhaust heat recovery device 60 is formed in a rectangular shape having a longitudinal direction along the width direction of the ship 1, it is disposed inside the steel plate structure 6 having a longitudinal direction along the width direction of the ship 1. In this case, a dead space is hardly generated, and it can be efficiently arranged.

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

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

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

  In some embodiments, as shown in FIG. 3 to FIG. 5 described above, the exhaust gas introduction device 40 described above is directed to the ship 1 from the exhaust heat recovery device 60 side toward the other end 34b of the exhaust gas introduction unit 34. In order to guide the exhaust gas discharged from the auxiliary engine 14 to the absorption tower main body 32 through the exhaust gas introduction pipe 42, and the exhaust gas introduction pipe 42 extending along the width direction of the exhaust gas. Auxiliary gas exhaust pipes 44a to 44d.

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

  Further, in the illustrated embodiment, on the downstream side of the exhaust gas discharge pipe 43, an exhaust gas chimney 46 extending upward inside the steel plate structure 6 via the exhaust gas damper 47, an exhaust gas introduction pipe 42, Is connected. For example, when the exhaust gas generators such as the main engine 12 and the auxiliary engine 14 are stopped, the exhaust gas damper 47 opens the flow path from the exhaust gas exhaust pipe 43 to the exhaust gas chimney 46, while the exhaust gas exhaust pipe 43 releases the exhaust gas. The flow path leading to the introduction pipe 42 is closed. For example, when the exhaust gas generator such as the main engine 12 or the auxiliary engine 14 is operated, the exhaust gas damper 47 opens the flow path from the exhaust gas exhaust pipe 43 to the exhaust gas introduction pipe 42, while the exhaust gas exhaust pipe 43 The flow path leading to the exhaust gas chimney 46 is closed.

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

  According to such embodiment, the exhaust gas discharged | emitted from the main engine 12 and the auxiliary engine 14 can be introduce | transduced with respect to the absorption tower 30 arrange | positioned in the narrow space inside the steel plate structure 6. FIG.

  In some embodiments, as shown in FIG. 11 described above, the absorption tower body 32 includes a pair of longitudinal wall surfaces 32a and 32b extending in parallel with each other along the longitudinal direction of the interior space 31, and the interior space. And a pair of short wall surfaces 32c and 32d extending in parallel with each other 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 long wall surfaces 32a and 32b and the pair of short wall surfaces 32c and 32d. Is done. In this case, the rectangular shape in the present embodiment includes those in which the corners of the rectangle are subjected to R processing and those in which the hunting processing is performed. The absorber tower main body 32 having such a rectangular internal space 31 is less likely to cause a dead space when placed in the ship, and therefore has excellent placement efficiency when placed in the ship.

FIG. 7 is a view for explaining a transverse 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, in the absorption tower body 32, a storage space 31a in which the sprayed cleaning liquid sprayed on the exhaust gas guided to the internal space 31 is stored. Is formed. As shown in FIG. 7, the absorption tower main body 32 connects a pair of long wall surfaces 32 a and 32 b (see FIG. 11) and crosses the storage space 31 a along the short direction of the internal space 31. A transverse member 70 is provided.

  According to such an embodiment, when the sloshing where the surface of the cleaning liquid stored in the storage space 31 a swells due to the rolling of the ship 1 or the like occurs, the liquid level is swung by the cross member 70. Can be suppressed. Moreover, the intensity | strength of the absorption tower main-body part 32 which has the rectangular internal space 31 can also be improved by providing the crossing member 70 which connects such a pair of longitudinal wall surfaces 32a and 32b.

In some embodiments, as shown in FIG. 7A, the cross member 70 described above is formed of 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 at a substantially central position in the longitudinal direction of the internal space 31, a plurality of steps (three steps) are provided at intervals in the vertical direction. is set up. 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 cylindrical cross section.

  According to such an embodiment, the above-mentioned 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 embodiment, it is excellent especially in the reinforcement effect with respect to the absorption tower main-body part 32. FIG.

In some embodiments, as shown in FIG. 7B, the cross member 70 described above is formed of a weir plate member 70B having a flat plate shape.
In the illustrated embodiment, the dam member 70 </ b> B is made of a non-perforated plate in which no hole is formed on the plate surface, and is installed at a substantially central position in the longitudinal direction of the internal space 31. The barrier plate member 70B may be a perforated plate having a plurality of holes formed on 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 flat plate-shaped weir plate member 70B. Moreover, according to such embodiment, it is especially excellent in the suppression effect of sloshing.

  Although not particularly shown, the cross member 70 described above may include both the cross beam member 70A and the barrier plate member 70B.

  In some embodiments, as shown in FIG. 5 described above, the marine vessel desulfurization apparatus 20 is a spraying device 38 for spraying the cleaning liquid to the exhaust gas guided to the internal space 31 of the absorption tower main body 32. (38A) is further provided. The spreading device 38A includes a longitudinal watering 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 longitudinal dispersion. And a plurality of watering nozzles 38a2 provided in the water pipe 38a1.

  In some embodiments, one longitudinal watering pipe 38 a 1 may be provided at a substantially central position in the short direction of the internal space 31. In some embodiments, a plurality of the longitudinal water spray pipes 38 a 1 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 watering nozzles 38a2 provided in the same longitudinal watering pipe 38a1 to the longitudinal wall surfaces 32a and 32b can be made constant. Thereby, since the cleaning liquid can be uniformly sprayed in the internal space 31, it is possible to suppress the influence of the problem that the spraying of the cleaning liquid becomes non-uniform due to the shaking (rolling, pitching, yawing, etc.) of the ship 1. it can.

  FIG. 8 is a schematic view showing an absorption tower of a marine vessel 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 spraying device 38. Therefore, the same reference numerals are given to the same components, and the description thereof is omitted.

  In some embodiments, as shown in FIG. 8, the marine vessel desulfurization apparatus 20 has a spraying device 38 (38 </ b> B) for spraying a cleaning liquid on the exhaust gas guided to the internal space 31 of the absorption tower main body 32. ). And the spreading | diffusion apparatus 38B extends in parallel with respect to each of a pair of short wall surface 32c, 32d (refer FIG. 11) in the internal space 31 of the absorption tower main-body part 32, and is arrange | positioned at equal intervals. A short-side watering pipe 38b1 and at least one watering nozzle 38b2 provided in each of the plurality of short-side watering pipes 38b1 are provided.

  In some embodiments, a plurality of watering nozzles 38b2 may be arranged at equal intervals in each of the plurality of short-side watering pipes 38b1. Moreover, in some embodiment, the installation position of the watering nozzle 38b2 arrange | positioned at each of the adjacent short direction watering pipe 38b1 may be shifted and arrange | positioned so that it may not overlap in a transversal direction. In some embodiments, the plurality of watering nozzles 38b2 arranged in the plurality of short-side watering pipes 38b1 may be arranged in a staggered manner in a plan view.

  According to such an embodiment, the spraying area of the watering nozzle 38b2 provided in each of the plurality of short-side watering pipes 38b1 can be set equal. Thereby, since the cleaning liquid can be uniformly sprayed in the internal space 31, it is possible to suppress the influence of the problem that the spraying of the cleaning liquid becomes non-uniform due to the shaking (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 a rectangular shape, and may be formed in a rectangular shape having a longitudinal direction, an elliptical shape, an oval shape, or the like as long as the effects of the present invention are achieved. Is.
FIG. 12 is a view for explaining the relationship between the planar shape and shape (aspect ratio L / W) of the internal space of the absorption tower main body in the marine vessel desulfurization apparatus according to the embodiment of the present invention. As shown in FIGS. 12A to 12C, 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. 12 (a), a pair of short wall surfaces extending in parallel with each other and a pair of short wall surfaces connected to each other. It is formed in a substantially rectangular shape defined by an arcuate wall surface. In some other embodiments, as shown in FIG. 12B, the internal space 31 of the absorption tower main body 32 is formed in an elliptical shape. In some other embodiments, as shown in FIG. 12 (c), a pair of longitudinal wall surfaces that exist in parallel to each other and a pair of arc-shaped wall surfaces that connect the ends of the pair of longitudinal wall surfaces, It is formed in a defined oval shape.

  According to said structure, there exists the effect of this invention mentioned above by providing the structure in some embodiment mentioned above. For example, since the internal space of the absorption tower main body is configured to have a longitudinal direction along the exhaust gas introduction direction, a dead space is less likely to occur compared to a conventional round (circular) absorption tower, Excellent placement when placed on a ship. Further, for example, a desulfurization apparatus for ships excellent in arrangement for a certain type of super-large vessel such as ULCS (the absorption tower having a planar shape having a longitudinal direction along the exhaust gas introduction direction is excellent in arrangement). Can be provided. In addition, the risk of exhaust gas being discharged to the outside of the absorption tower without desulfurization is reduced compared to the case where the internal space of the absorption tower main body has a longitudinal direction along the direction orthogonal to the exhaust gas introduction direction. Can do.

  And, by setting the upper limit of the ratio (W: L) of the maximum width W and the maximum length L of the internal space to 1: 6.0, the present inventors have found that the exhaust gas flow in the absorption tower is not uniform. It can be kept within the practically acceptable range as studied.

  Furthermore, according to said structure, the internal space 31 of the absorption tower main-body part 32 contains the circular arc shape in at least one part of planar shape, and the absorption tower main-body part 32 is a part containing 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 through a portion corresponding to the outside of the housing, the layout can be improved.

(Material)
Since the marine vessel desulfurization apparatus 20 is exposed to the outdoors, the outer wall surface may be rusted or corroded by sea breeze or rainwater. Moreover, when using seawater as a washing | cleaning liquid as mentioned above, there exists a possibility that the inner wall surface and the spreading | diffusion apparatus 38 which define the internal space 31 etc. of the absorption tower 30 may rust or corrode. Moreover, since the ship desulfurization apparatus 20 is attached to the ship 1, it is necessary to consider weight, workability, durability, and maintainability.

In some embodiments, the wall surface (including the longitudinal wall surfaces 32a and 32b, the short wall surfaces 32c and 32d) of the absorption tower 30 (including the absorption tower body 32, the exhaust gas introduction part 34, and the exhaust gas discharge part 36), and The material of the watering pipe 38c1 (including the longitudinal watering pipe 38a1 and the short-side watering pipe 38b1) and the watering nozzle 38c2 (including the watering nozzles 38a2 and 38b2) of the spraying device 38 is, for example, carbon steel (ordinary steel) such as SS400. It is. And the anti-corrosion film by the anti-corrosion coating is given to the wall surface of the absorption tower 30, the water spray pipe of the sprinkling device 38, and the inner and outer surfaces of the water spray nozzle. In this case, the absorption tower 30 and the spraying device 38 are excellent in workability because carbon steel is used, and are excellent in corrosion resistance because they are provided with an anticorrosive coating with an anticorrosive paint.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some other embodiments, the wall surface of the absorption tower 30, the water spray pipe of the spraying device 38, and the inner and outer surfaces of the water spray nozzle are provided with anticorrosion lining such as resin lining or flake glass lining. Here, the resin used for the resin lining is, for example, FRP. In this case, the absorption tower 30 and the spraying device 38 are excellent in corrosion resistance because they are provided with anticorrosion lining.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some other embodiments, the wall surface of the absorption tower 30 and the material of the water spray pipe and water spray nozzle of the spraying device 38 are, for example, high corrosion resistance stainless steel (stainless steel) such as SUS316L. In this case, the absorption tower 30 and the spraying device 38 are excellent in workability and corrosion resistance because high corrosion resistance stainless steel is used, and when an anticorrosion coating or anticorrosion lining with an anticorrosion paint is applied. Compared to this, the manufacturing time can be shortened, and the durability and maintenance are excellent.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some other embodiments, the material of at least a part of the absorption tower 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 outlet 36 located above the absorption tower 30 are excellent in workability and corrosion resistance because FRP is used, and have anticorrosion properties. Compared with the case where an anticorrosion film or anticorrosion lining is applied, a manufacturing time can be shortened, and durability and maintenance are excellent. And compared with the case where carbon steel or stainless steel is used, it can be made lightweight. Moreover, since the gravity center of the absorption tower 30 can be made into a low position by making the part with small load applied above the absorption tower 30 light, it is set as the absorption tower 30 which has high resistance with respect to rolling. Can do.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

(Upper tower)
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 in the longitudinal direction (exhaust gas inlet side) and the back side (opposite of the exhaust gas inlet) Gas flow rate is greatly different from each other), it becomes difficult to flow the exhaust gas uniformly in the absorption tower, and the flow of exhaust gas in the absorption tower may be uneven.

  FIG. 13 is a schematic view showing an absorption tower of a marine vessel desulfurization apparatus according to an embodiment of the present invention, and is a view seen from the direction A shown in FIG. As shown in FIG. 13, in some embodiments, the absorption tower 30 includes an internal space confirmation device for confirming the state of spraying of the cleaning liquid by the above-described spray device 38, the flow of exhaust gas in the internal space 31, and the like. 80 is included.

  As shown in FIG. 13, the internal space confirmation device 80 includes a light-transmitting visual window 80 </ b> A that allows the inside of the internal space 31 to be visually recognized from the outside of the absorption tower 30 (absorption tower body portion 32). The viewing window 80A has a light transmissive member such as a glass surface, and is provided at a height 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 visual recognition window 80 </ b> A is provided at a height position below the mist eliminator 37 and above the spraying device 38 at the side end portion 39 b on the other side. 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.

  The upper end (top end) of the cleaning liquid sprayed by the spraying device 38 is about 1 m above the watering nozzle 38c2 (including the watering nozzles 38a2 and 38b2) of the spraying device 38 in the absorption tower 30 including the packed bed 35 described above. positioned. Moreover, in the absorption tower 30 which is not provided with the packed bed 35 as shown in FIG. 15 to be described later, the absorption tower 30 is positioned at a maximum of about 10 m from the watering nozzle 38c2 of the spraying device 38. Some absorption towers not provided with the packed bed 35 are provided with a watering nozzle 38c2 facing downward to spray and to disperse gas and liquid using a tray. The invention according to some of the above-described embodiments and some of the embodiments described below can be applied to an absorption tower that does not include the packed bed 35. In some embodiments, the visual recognition window 80A is disposed at a height position substantially the same as the upper end (top end) of the cleaning liquid. Further, in some other embodiments, as shown in FIG. 15, the viewing window 80 </ b> A is closer to the back side (opposite side to the exhaust gas inlet) of the side end portion 39 c in the short direction of the absorption tower body 32. It is provided in the position.

  According to the above configuration, the absorption tower 30 includes the internal space confirmation device 80 (viewing window 80A), thereby confirming the spraying state of the cleaning liquid by the spraying device 38, the flow of exhaust gas in the internal space 31, and the like. Can do. When the spraying state by the spraying device 38 is poor, the spraying state by the spraying device 38 can be improved by performing processing such as cleaning of the watering nozzle 38c2 of the spraying device 38. Further, by providing the internal space confirmation device 80 (viewing window 80A) at a position closer to the back side (opposite side to the exhaust gas inlet) of the side end portion 39b on the other side in the longitudinal direction and the side end portion 39c in the short side direction, The flow of exhaust gas on the side opposite to the exhaust gas introduction port, which is difficult to confirm with the internal space confirmation device 80 (viewing window 80A) provided on the exhaust gas introduction port side, can be confirmed.

Moreover, the absorption tower 30 can confirm the angle of the cleaning liquid sprayed from the watering nozzle 38c2 of the spraying device 38 by including the internal space confirmation device 80 (viewing window 80A), and the sloshing situation from the angle of the cleaning liquid Can be grasped. In some other embodiments, the angle of the cleaning liquid can be easily confirmed by providing a mark such as a straight line extending in the vertical direction or the horizontal direction on the light transmissive member of the viewing window 80A. it can. Moreover, the visual recognition window 80A can be reinforced by using a metal wire or the like as the mark described above.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the internal space confirmation device 80 (viewing window 80A) may be used for other purposes than the confirmation of the spraying state of the spraying device 38. For example, the visual window 80A is provided on the exhaust gas inlet side and used to check the flow of the exhaust gas on the exhaust gas inlet side, or the visual window 80A is provided at a height near the liquid surface of the storage space 31a in which the cleaning liquid is stored. It may be provided and used to check the storage space 31a.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  FIG. 14 is a schematic diagram showing an absorption tower of a marine vessel desulfurization apparatus according to an embodiment of the present invention, and an absorption tower (liquid column tower, spray tower, tray-type absorption tower, etc.) that does not include a packed bed. It is the figure which showed an example. In some embodiments, the above-described marine vessel desulfurization apparatus 20 includes the absorption tower 30 including the above-described absorption tower main body 32 and the above-described viewing window 80A as illustrated in FIGS. In this case, the absorption tower 30 includes an absorption tower main body 32 configured so that the exhaust gas flows through the internal space 31, and a light-transmitting visual recognition that allows the internal space 31 to be visually recognized from the outside of the absorption tower main body 32. And a window 80A. In the marine vessel desulfurization apparatus 20 including such an absorption tower 30, an operator or the like can check the flow of exhaust gas flowing through the internal space 31 through the visual window 80 </ b> A.

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 body 32 and the viewing window 80 </ b> A described above, the internal space of the absorption tower body 32. 31 has a longitudinal direction. And the absorption tower main-body part 32 mentioned above has the exhaust gas inlet 33 mentioned above connected to the internal space 31 in the edge part of the one side in the longitudinal direction of the internal space 31. As shown in FIG. Further, the above-described viewing window 80 </ b> A is provided on the other side in the longitudinal direction of the internal space 31. Here, the “other side” refers to 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 80 </ b> A is provided at a substantially central position in the width direction of the side end portion 39 b on the other side. 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 visual recognition window 80 </ b> A is provided at a position closer to the back side (opposite side to the exhaust gas introduction port) of the side end portion 39 c in the short direction of the absorption tower main body 32.

  If the internal space 31 has a longitudinal direction, the gas flow velocity is greatly different between the exhaust gas inlet 33 side 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 becoming. 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 in the longitudinal direction of the internal space 31. The viewing window 80A is located on the other side in the longitudinal direction of the internal space 31, for example, on the back side of the side end 39b on the other side in the longitudinal direction or the side end 39c in the short side (opposite to the exhaust gas introduction port). Provided in position. An operator or the like can check the flow of the exhaust gas on the side opposite to the exhaust gas inlet 33, which is difficult to check with the visual window provided on the exhaust gas inlet 33 side, through the visual window 80A.

  In some embodiments, the above-described spraying device 38 is provided in the marine vessel desulfurization device 20 including the absorption tower 30 including the absorption tower body 32 and the viewing window 80A. The spraying device 38 has the above-mentioned watering nozzle 38c2 (including watering nozzles 38a2 and 38b2) capable of spraying the cleaning liquid into the internal space 31. And the visual recognition window 80A mentioned above is arrange | positioned in the position which can visually recognize the watering 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, an operator or the like can spray the spraying state of the cleaning liquid by the water spray nozzle 38c2 through the visual recognition window 80A. The state of spraying the cleaning liquid by the device 38 can be confirmed. If the spraying condition of the cleaning liquid by the spraying device 38 is poor, the spraying condition by the spraying device 38 can be improved by performing processing such as cleaning of the watering nozzle 38c2.

  In some other embodiments, the above-described spraying device 38 is provided in the marine vessel desulfurization device 20 including the absorption tower 30 including the absorption tower body 32 and the viewing window 80A. The spraying device 38 has the above-mentioned watering nozzle 38c2 (including watering nozzles 38a2 and 38b2) capable of spraying the cleaning liquid into the internal space 31. The watering nozzle 38c2 is configured to be able to spray the cleaning liquid upward. The cleaning liquid sprayed upward from the watering nozzle 38c2 rises to the upper end (top end) in the internal space 31 and then naturally falls. And the visual recognition window 80A mentioned above is provided in the height position which can confirm the upper end (top end) of the washing | cleaning liquid sprayed by the spreading | diffusion apparatus 38. FIG. More specifically, the visual recognition window 80A is arranged at a height position substantially the same as the upper end (top end) of the cleaning liquid in design. In this case, since the above-described viewing window 80A is disposed at a position where the upper end of the cleaning liquid sprayed by the spraying device 38 can be confirmed, the operator or the like can clean the cleaning liquid by the spraying device 38 via the viewing window 80A. It is possible to confirm whether or not the spraying condition is appropriate.

  In some embodiments, in the absorption tower 30 including the packed bed 35 as illustrated in FIG. 13, the visual recognition window 80A is 0.5 m or more and 1.5 m or less above the water spray nozzle 38c2 of the spray device 38. The height is preferably 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 operator can confirm the upper end (top end) of the cleaning liquid sprayed by the spraying device 38 through the visual recognition window 80A.

  In some embodiments, in the absorption tower 30 that does not include the packed bed 35 as shown in FIG. 14, the viewing window 80A is 5 m or more and 15 m or less, preferably 7 m above the water spray nozzle 38c2 of the spraying device 38. The height is 13 m or less, more preferably 8 m or more and 12 m or less. In this case, the operator can confirm the upper end (top end) of the cleaning liquid sprayed by the spraying device 38 through the visual recognition window 80A.

In some embodiments, in the desulfurization apparatus 20 for a ship including the absorption tower 30 including the absorption tower main body 32 and the viewing window 80A described above, and the spraying device 38 having the water spray nozzle 38c2, the absorption tower main body described above. 32 is configured such that the exhaust gas flows upward from below in the vertical direction, and has the above-described mist eliminator 37 provided above the watering nozzle 38c2 in the internal space 31. Further, as shown in FIGS. 13 and 14, the visual recognition window 80 </ b> A is disposed above the watering nozzle 38 c 2 and below the mist eliminator 37. In this case, the absorption tower main body 32 is configured such that the exhaust gas flows from the lower side to the upper side in the vertical direction. The visual recognition window 80 </ b> A is disposed above the watering nozzle 38 c 2 and below the mist eliminator 37. Since the exhaust gas is in gas-liquid contact with the cleaning liquid below the mist eliminator 37, even if the viewing window 80 </ b> A is provided above the mist eliminator 37, the spraying state of the cleaning liquid by the spraying device 38 cannot be confirmed. By arranging the viewing window 80A as described above, the operator can check the state of spraying the cleaning liquid by the spraying device 38 through the viewing window 80A. In particular, when the watering nozzle 38c2 is configured to be able to spray the cleaning liquid upward, the operator confirms the upper end of the cleaning liquid sprayed by the spraying device 38 through the above-described visual window 80A, thereby cleaning the cleaning liquid. It is possible to confirm whether or not the spraying condition is appropriate.
The invention according to some of the embodiments described above can also be applied to rectangular absorption towers having aspect ratios exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and round absorption towers. is there.

(Filler)
As described above, in the packed layer 35, for example, a number of ordered packings are stacked in layers. Here, the filler (filler) in the packed bed 35 is for increasing the gas-liquid contact efficiency between the exhaust gas and the cleaning liquid inside the absorption tower 30. The absorption tower 30 absorbs the exhaust gas in an undesulfurized state when the packing stacked in the packed bed 35 moves and becomes non-uniform due to the shaking of the ship 1 (rolling, pitching, yawing, etc.). There is a risk of being discharged outside the tower.

  FIG. 15 is a perspective view (conceptual diagram) for explaining a filler in one embodiment of the present invention. As shown in FIG. 15, in some embodiments, a plurality of fillings 35 </ b> A in the filling layer 35 are arranged side by side in the vertical and horizontal directions. As shown in FIG. 15, each of the fillings 35A is 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 in which the filling layer 35 of the internal space 31 is provided, a plurality of the filling materials 35A are arranged side by side in the vertical and horizontal directions. In addition, in the filling layer 35, the filling material 35A may not be laminated | stacked, but one layer of filling material 35A may be arrange | positioned along with the horizontal direction.

According to said structure, since the filling 35A in the packed bed 35 is arrange | positioned along with at least a horizontal direction mutually, the movement by the shaking of the ship 1 is restrict | limited and it is prevented that it becomes non-uniform arrangement | positioning. Therefore, it is possible to reduce the risk that the exhaust gas is discharged to the outside of the absorption tower without being desulfurized.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the filling 35A includes at least a portion of regular packing, and in some other embodiments, the filling 35A includes at least a portion of irregular filling. Yes. Here, “regular packing” represents a packing suitable for regular stacking, and “irregular packing” represents a packing stacked irregularly when filling. The irregular packing has a larger required pressure loss than the regular packing, but can improve the dispersibility of the cleaning liquid. For this reason, according to the required pressure loss and the processing performance with the cleaning liquid, the packing 35A is selected to be either a regular packing or an irregular packing, or a ratio of the regular packing and the irregular packing. The
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  In some embodiments, the above-described marine vessel desulfurization apparatus 20 fills the absorption tower 30 including the absorption tower main body 32 described above, the above-described spraying apparatus 38, and the packed bed 35 provided in the above-described internal space 31. A filling 35A that is configured to bring the cleaning liquid into gas-liquid contact with the exhaust gas passing through the filling layer 35. In this case, the marine vessel desulfurization apparatus 20 includes a cleaning liquid having a large contact area on the surface of the filling 35A when the exhaust gas flows between the fillings 35A (gap) filled in the filling layer 35, and the filling. The exhaust gas whose flow is disturbed by the object 35A can be brought into gas-liquid contact. According to the marine vessel desulfurization apparatus 20, the gas-liquid contact efficiency between the cleaning liquid and the exhaust gas can be increased by the filler 35 </ b> A. Therefore, the sulfur content contained in the exhaust gas can be increased compared to the case where the filler 35 </ b> A is not provided. Can be effectively removed.

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

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

  As shown in FIG. 16, the absorption tower main body 32 is divided into two parts by a two-dot chain line, and the first layered portion 32 </ b> A having a wall surface defining the packed bed 35 and the first layered shape in the absorption tower main body 32. A second layered portion 32B that is a portion below the portion 32A, a second layered portion 32B having a wall surface that partitions the storage space 31a and the lower side internal space 31b, and a first layered portion in the absorption tower main body 32 The third layered portion 32C, which is a portion above 32A, is completed by stacking the third layered portion 32C having a wall surface defining the upper side internal space 31c and connecting 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 (ordinary steel) such as SS400. And as shown in FIG. 16, the anti-corrosion layer 84 is formed in the wall surface (inner wall surface) of the 2nd layer part 32B, the 3rd layer part 32C, and the waste gas introduction part 34. As shown in FIG. In contrast, the material of the first layered portion 32A is, for example, high corrosion resistance stainless steel (stainless steel) such as SUS316L. And as shown in FIG. 16, the corrosion prevention layer 84 is not formed in the wall surface (inner wall surface) of 32 A of 1st layer parts.

  In the ship desulfurization apparatus 20, since high-temperature exhaust gas flows inside the absorption tower body 32, the wall surface (inner wall surface) that defines the internal space 31 of the absorption tower body 32 is a sulfur content contained in the exhaust gas, etc. There is a risk of corrosion. In addition, when seawater is used as the cleaning liquid, the above-described wall surface or the like may be corroded by the seawater. Usually, 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, there is a possibility that the filling 35 </ b> A moves due to the shaking of the ship and collides with the anticorrosion layer 84 that protects the wall surface defining the filling layer 35, thereby peeling or damaging the anticorrosion layer 84. The peeling or damage of the anticorrosion layer 84 may cause corrosion of the wall surface protected by the anticorrosion layer 84.

  According to the above configuration, in the ship desulfurization apparatus 20, the anticorrosion layer 84 is formed on the wall surface (inner wall surface) that defines the internal space 31 of the absorption tower main body 32, other than the wall surface that partitions the packed bed 35. Has been. If the anticorrosion layer 84 is formed on the wall surface that defines the filling layer 35, the filling 35A may move due to the shaking of the ship and collide with the anticorrosion layer 84, and the anticorrosion layer 84 may be peeled off or damaged. Instead of forming the anticorrosion layer 84 on the wall surface partitioning, the layered portion (the first layered portion 32A) surrounding the packed layer 35 in the absorption tower body 32 is made of a corrosion resistant material such as stainless steel, for example. By doing so, corrosion of the wall surface is suppressed. Such a marine vessel desulfurization apparatus 20 can suppress the corrosion of the wall surface defining the internal space 31 while preventing the anticorrosion layer 84 from being damaged by the filler 35A.

  In some embodiments, in the marine vessel desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 described above, the above-described spraying device 38, and the above-described packing 35A, the packing 35A is a rule. It is a filling. In this case, the marine desulfurization apparatus 20 can reduce the pressure loss of the exhaust gas as compared with the case where the filling 35A is an irregular packing because the filling 35A is a regular packing. The amount of exhaust gas treated can be increased. For this reason, the marine vessel desulfurization apparatus 20 using the regular packing as the packing 35A can be made smaller in size than the marine desulfurization apparatus 20 using the irregular packing as the packing 35A. In addition, the regular packing is less likely to move due to the shaking of the ship 1 than the irregular packing, and is less likely to be unevenly arranged due to the shaking of the ship 1. For this reason, the ship desulfurization apparatus 20 that uses the regular packing as the packing 35A is compared with the ship desulfurization apparatus 20 that uses the irregular packing as the packing 35A. The risk of being discharged can be reduced.

In some embodiments, in the marine vessel desulfurization apparatus 20 including the absorption tower 30 including the absorption tower main body 32 described above, the spraying device 38 described above, and the packing 35A described above, the absorption tower main body 32 is The exhaust gas flows from the lower side to the upper side in the vertical direction. The spraying device 38 is configured to spray the cleaning liquid upward. In this case, the spraying device 38 is configured to spray the cleaning liquid upward. The cleaning liquid sprayed upward is dispersed at the upper end (the top) and then dispersed and present on the surface of, for example, the filling 35 </ b> A in the internal space 31 by falling down and falling. When the exhaust gas flows through the internal space 31 from the lower side to the upper side in the vertical direction, the sulfur content contained in the exhaust gas is removed by coming into gas-liquid contact with the cleaning liquid adhering to the surface of the filling 35A or the falling cleaning liquid. Is done.
The invention according to some of the embodiments described above can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the filling 35 </ b> A has a strength that allows at least the upper surface to cope with a human load. In this case, it can be used as a scaffold when installing components in the internal space 31 or during maintenance work.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the distance Hn between the packed bed 35 and the spreading device 38 shown in FIG. 13 is 2 m or more. In this case, since the work space is secured, it is possible to improve the efficiency of installation and replacement work of the spraying device 38. Further, by increasing the size of the manhole connecting the internal space 31 and the outside according to the expansion of the work space, it is possible to further improve the efficiency of installation and replacement work of the spraying device 38.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  In some embodiments, as shown in FIG. 14, the pH adjusting agent 81 is disposed in at least a part of the storage space 31a. More specifically, as shown in FIG. 14, the pH adjuster 81 includes a lock-like alkaline agent 81 </ b> A that is spread on the inside of the net and spread on at least a part of the bottom surface of the storage space 31 a. In some embodiments, the lock-like alkaline agent 81A is spread over the entire bottom surface of the storage space 31a.

According to said structure, since the lock-like alkaline agent 81A is arrange | positioned in at least one part in the storage space 31a, the lock-like alkaline agent 81A and the seawater (cleaning liquid) after the low pH desulfurization containing sulfurous acid Therefore, the pH value can be increased by neutralizing seawater after low pH desulfurization. In addition, by laying the lock-like alkaline agent 81A on the entire bottom surface of the storage space 31a, the wave splash at the time of sloshing can be reduced, so that the force applied to the absorption tower main body 32 at the time of sloshing can be reduced. Further, to reduce the wave splash at the time of sloshing, as shown in FIG. 14, when the sprayed cleaning liquid stored in the storage space 31a exceeds a certain amount, the absorption tower 30 is positioned on the downstream side. This is particularly useful when a partition 82 that flows into the seawater discharge pipe 59 is provided, and it is possible to suppress the sprayed cleaning liquid from flowing to the downstream side even though the sprayed cleaning liquid is less than a certain amount due to wave splattering during sloshing.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  In some embodiments, as illustrated in FIG. 14, the absorption tower 30 is provided between the storage space 31 a and the internal space 59 a of the seawater discharge pipe 59, and the partition 82 described above and the other side in the longitudinal direction. There is a seawater flow space 82a defined by a lower end portion of the side end portion 39b, a bottom surface of the storage space 31a, and a ceiling portion 83 extending from the side end portion 39b to the seawater discharge pipe 59 side along the vertical direction. Is formed. The lock-like alkaline agent 81A described above is spread over the entire bottom surface of the seawater water 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 passage space 82a, the lock-like alkaline agent 81A and seawater (cleaning liquid after low pH desulfurization containing sulfurous acid). ) Can be brought into contact with each other, so that the pH value can be increased by neutralizing seawater after low pH desulfurization.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

Moreover, in some embodiments, the hatch 83a which can be opened and closed is provided in the ceiling part 83 located above the sea water flow space 82a. In this case, by opening the hatch 83a, the lock-like alkaline agent 81A in the seawater water-passing space 82a can be exchanged together with the net, so that the efficiency of exchanging the lock-like alkaline agent 81A can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  As shown in FIG. 14, in some embodiments, the absorption tower 30 is configured not to include a packed bed 35 that separates the lower internal space 31b and the upper internal space 31c. Here, in FIG. 14, a lower side space 31 b is below the spraying device 38, and an upper side internal space 31 c is above the spraying device 38. The spraying device 38 is disposed closer to the lower side of the absorption tower 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 said structure, since the upper side internal space 31c has length along a perpendicular direction, the upper end (top end) of the cleaning liquid sprayed from the spraying device 38 can be made into a high position. For this reason, even if the absorption tower 30 is not provided with the packed bed 35, it is possible to reduce the risk that the exhaust gas is discharged to the outside of the absorption tower without being desulfurized.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

FIG. 17 is a schematic view showing an absorption tower of a marine vessel desulfurization apparatus according to an embodiment of the present invention, and is a view for explaining a wall surface 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. As shown in FIG. 17, the wall surface reinforcing member 92 is fixed to one of the pair of long wall surfaces 32a and 32b and the pair of short wall surfaces 32c and 32d, and the inner wall 31 side from the fixed wall surface. And has a longitudinal direction along a wall surface fixed in the horizontal direction. In this case, the structural strength of the absorption tower 30 can be maintained by the wall surface reinforcing member 92.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, as shown in FIG. 17, the absorption tower 30 is disposed in the internal space 31 and extends along the longitudinal direction to divide the internal space 31 into a plurality of spaces. 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the absorption tower 30 has a pair of long wall surfaces 32a and 32b formed thicker than a pair of short wall surfaces 32c and 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

(spray)
In some embodiments, as shown in FIGS. 5, 8, and 14, the above-described ship desulfurization apparatus 20 includes the absorption tower 30 including the absorption tower body 32 described above, and the above-described spraying apparatus 38. I have. The spraying device 38 includes a watering pipe 38c1 (including a longitudinal watering pipe 38a1 and a short-side watering pipe 38b1) extending in the internal space 31, and a plurality of watering pipes arranged at predetermined intervals in the watering pipe 38c1. Nozzle 38c2 (including watering nozzles 38a2 and 38b2). In this case, the marine vessel desulfurization apparatus 20 injects the cleaning liquid flowing through the water spray pipe 38c1 from each of the plurality of water spray nozzles 38c2 arranged at predetermined intervals in the water spray pipe 38c1, thereby causing the cleaning liquid to flow into the internal space 31. Can be dispersed evenly. Therefore, the marine vessel desulfurization apparatus 20 can suppress the influence of the problem that the spraying of the cleaning liquid becomes uneven due to the shaking (rolling, pitching, yawing, etc.) of the marine vessel 1.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  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 spraying device 38 from below. The support may be a round bar or a square bar, and may be flat or L-shaped. And the support is arrange | positioned so that the longitudinal direction may cross | intersect with the longitudinal direction of a water spray pipe, and the both ends of a longitudinal direction are being fixed to the wall surface of the absorption tower main-body part 32. FIG. When providing a some support, a some support is arrange | positioned so that it may mutually become equal intervals so that a mutual longitudinal direction may follow. The water spray pipe 38c1 may be fixed to the support.

According to the above configuration, since the water spray pipe 38c1 of the spraying device 38 is supported from below by the support, the water spray pipe 38c1 itself does not have to have structural strength, and the water spray pipe 38c1 can be downsized. Weight reduction can be performed. In addition, since the work can be performed in a state of being placed on the support at the time of installation and replacement of the water spray pipe 38c1, the efficiency of the installation work and replacement work can be improved. Moreover, when a support is arrange | positioned at equal intervals, the watering nozzle 38c2 can be arrange | positioned easily and equally by providing the watering nozzle 38c2 between supports.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

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

According to said structure, since the some support is arrange | positioned for every fixed space | interval of the height direction of the absorption tower 30, the height position of the water spray pipe 38c1 can be changed. In addition, since the plurality of supports can be used for installation of a work scaffold, for example, at the time of lining maintenance, it is possible to save the labor of the work scaffold and shorten the installation work time. Moreover, since a some support can be utilized freely for uses other than installation of a work scaffold, the maintainability of the absorption tower 30 can be improved. Here, the ship 1 has a limited working period in the dog or a period in which the ship 1 can be anchored on the quay due to problems such as berthing costs. is important.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the water spray pipe 38c1 of the spraying device 38 has a structural strength that is not required to be supported from below by the support. In this case, a support may not be installed in the absorption tower 30.
Moreover, in some embodiment, the water spray pipe 38c1 of the spreading device 38 has the intensity | strength which can respond to a human load. In this case, the water spray pipe 38c1 can be used as a scaffold when installing parts in the internal space 31 or during maintenance work.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the water spray pipe 38c1 of the spraying device 38 is detachably fixed to the absorption tower main body 32 by fastening means such as bolting. In this case, since the water spray pipe 38c1 is detachably fixed to the absorption tower main body 32, the replacement work of the water spray pipe 38c1 can be easily performed. For this reason, the maintainability of the absorption tower 30 can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less. Further, the invention according to the present embodiment can be applied to both an absorption tower including a support and an absorption tower not including a support.

In some embodiments, the watering nozzle 38c2 of the spraying device 38 is detachably fixed to the watering pipe 38c1 by fastening means such as bolting or screwing. In this case, since the watering nozzle 38c2 is detachably fixed to the watering pipe 38c1, the replacement work of the watering nozzle 38c2 can be easily performed. For this reason, the maintainability of the absorption tower 30 can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less. Further, the invention according to the present embodiment can be applied to both an absorption tower including a support and an absorption tower not including a support.

(Before desulfurization tower)
FIG. 18 is a view for explaining an exhaust gas cooling device of a marine vessel desulfurization apparatus according to an embodiment of the present invention. As shown in FIG. 18, in some embodiments, the marine vessel desulfurization device 20 is disposed in the vertical portion 34 </ b> B of the exhaust gas introduction unit 34 and cools the exhaust gas introduced into the exhaust gas introduction unit 34. An exhaust gas cooling device 85 for spraying water is further provided. The exhaust gas cooling device 85 includes a water spray pipe 85a extending in a direction parallel to or perpendicular to a pair of wall surfaces located on both sides in the width direction of the exhaust gas introduction section 34, and a plurality of water pipes 85a. A cooling water nozzle 85b. Here, each of the watering pipe 85a and the cooling water nozzle 85b is the watering pipe 38c1 (including the longitudinal watering pipe 38a1 and the short-side watering pipe 38b1) and the watering nozzle 38c2 (including the watering nozzles 38a2 and 38b2). Since they have the same configuration as each of them, descriptions on common matters are omitted.

According to said structure, the temperature of the waste gas guide | induced in the waste gas introduction part 34 can be lowered | hung by sprinkling cooling water. For this reason, the rise in the temperature in the exhaust gas introduction part 34 can be suppressed. Here, the marine absorption tower 30 has a higher temperature of the exhaust gas introduced into the exhaust gas introduction portion 34 than the onshore absorption tower in which a heat exchanger for exchanging heat of the exhaust gas is arranged on the upstream side. It is. More specifically, the absorption tower for land is cooled to about 170 ° C. before being led into the exhaust gas introduction section 34, but the absorption tower for ships has an exhaust gas of about 300 ° C. in the exhaust gas introduction section 34. Is directly guided. Moreover, when the anticorrosion lining (anticorrosion layer 84) is given to the exhaust gas introduction part 34 of the absorption tower 30 for ships, there exists a possibility that an anticorrosion lining may be damaged by the heat | fever of exhaust gas. Further, the spraying by the spraying device 38 of the absorption tower main body 32 cannot cool the inlet side of the exhaust gas introducing section 34. Therefore, the exhaust gas cooling device 85 is particularly useful when provided in the marine absorption tower 30. Moreover, since the volume of the exhaust gas guided into the exhaust gas introduction part 34 can be reduced by spraying the cooling water, a large amount of exhaust gas can be treated in the absorption tower 30.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the exhaust gas cooling device 85 is connected to the seawater supply pipe 58 of the seawater supply apparatus 50 via the cooling water supply pipe 58a (cooling water pipe) branched at the branch point TP1, as shown in FIG. The seawater introduced into 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 spraying device 38, it is possible to prevent the ship desulfurization device 20 from becoming large and having a complicated structure.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel 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, “emergency” refers to, for example, a case where the exhaust gas is heated in the water tower 30 without being sprayed by the spraying device 38. The emergency cooling device 87 is connected to the emergency tank 86 for storing the emergency cooling water, the sprinkling pipe 85a and the emergency tank 86 of the exhaust gas cooling device 85, and the emergency water from the emergency tank 86 is connected to the sprinkling pipe 85a. And an emergency cooling water line 88 for supplying cooling water. The emergency cooling device 87 does not require a power source and is configured to be operable even when the power source 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 so that the emergency cooling water is supplied to the sprinkling pipe 85a due to the height difference. It may be a thing. Further, as shown in FIG. 18, an emergency opening / closing valve 90 may be provided in the emergency cooling water pipe 88. The emergency on-off valve 90 is configured to close while electricity is supplied from the power source and to open when power is lost. In this case, the emergency cooling device 87 that can operate even when the power supply is lost can spray the cooling water in the event of an emergency, thereby reducing the temperature of the exhaust gas guided into the absorption tower 30. For this reason, since the rise in the temperature in the absorption tower 30 can be suppressed, it is possible to prevent the absorption tower 30 from being damaged by a high temperature.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel desulfurization device 20 further includes an emergency bypass device 89 for causing the exhaust gas to bypass the absorption tower 30 in an emergency, as shown in FIG. The emergency bypass device 89 includes a switching damper 89 a provided in the middle of the exhaust gas pipe connected to the main engine 12 and the absorption tower 30, and an exhaust gas pipe 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 89a and the switching damper 89b have the bypass flow path closed and the flow path leading to the absorption tower 30 opened. In an emergency, the switching damper 89a and the switching damper 89b open the detour channel and close the channel leading to the absorption tower 30. In this case, the emergency bypass device 89 can bypass the exhaust gas by detouring the exhaust gas in an emergency. For this reason, since the temperature rise in the absorption tower 30 can be suppressed in an emergency, it is possible to prevent the absorption tower 30 from being damaged due to a high temperature.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  FIG. 19 is a diagram for explaining an exhaust gas cooling device of a marine vessel desulfurization apparatus according to an embodiment of the present invention. In some embodiments, as shown in FIG. 19, the above-described ship desulfurization apparatus 20 has an exhaust gas inlet connected to the absorption tower body 32 and the exhaust gas inlet 33 in which the above-described exhaust gas inlet 33 is formed. And the above-described exhaust gas cooling device 85 capable of spraying cooling water to the exhaust gas introduced into the exhaust gas introduction unit 34. And the exhaust gas cooling device 85 has the cooling water nozzle 85b comprised so that a cooling water may be ejected toward the upstream of the flow direction of waste gas.

  According to the above configuration, the marine vessel desulfurization apparatus 20 disperses the cooling water by the exhaust gas cooling device 85 with respect to the exhaust gas introduced into the exhaust gas introduction unit 34, so that the exhaust gas introduced into the exhaust gas introduction unit 34. The temperature of the exhaust gas inlet 34 can be suppressed from rising. The ship desulfurization apparatus 20 is introduced with exhaust gas having a temperature higher than that of the land-based desulfurization apparatus provided at the power plant. Therefore, the temperature of the exhaust gas can be lowered in order to reduce the influence on the desulfurization apparatus and improve the desulfurization performance. It becomes important. Moreover, since the volume of the exhaust gas introduced into the exhaust gas introduction part 34 can be reduced by spraying the cooling water with the exhaust gas cooling device 85, 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 introduction unit 34 before reaching the cooling water nozzle 85b. It is possible to prevent the cooling water nozzle 85b from being damaged by the heat of the exhaust gas.

  In some embodiments, as shown in FIG. 19, the above-described exhaust gas cooling device 85 includes a first exhaust gas cooling device 85C configured to supply seawater as cooling water from the seawater supply pump 54a, A first exhaust gas cooling device 85D configured to supply, for example, industrial water as emergency cooling water from the emergency cooling device 87. That is, the marine vessel desulfurization device 20 may have a dedicated device or piping for injecting emergency cooling water from the cooling water nozzle 85b.

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

  In some embodiments, the above-described marine vessel desulfurization apparatus 20 includes an absorption tower 30 including the absorption tower main body 32 in which the exhaust gas inlet 33 described above is formed and the exhaust gas inlet 34 connected to the exhaust gas inlet 33. And an exhaust gas cooling device 85 having the above-described cooling water nozzle 85b. And the exhaust gas introduction part 34 is comprised so that exhaust gas may flow toward the downward direction from the upper direction in a perpendicular direction. Further, the cooling water nozzle 85b is configured to inject cooling water upward.

  Here, if the exhaust gas introduced into the exhaust gas introduction unit 34 is sprayed with cooling water by the exhaust gas cooling device 85 to lower the temperature of the exhaust gas, sulfurous acid may be generated. In addition, when seawater is used as the cooling water, salt may precipitate from the seawater due to temperature rise. If sulfurous acid or salt adheres to the cooling water nozzle 85b, the spraying performance may be reduced.

  According to said structure, the cooling water nozzle 85b is comprised so that a cooling water may be injected upwards. The cooling water jetted upward comes into contact with 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. The cleaning liquid dropped on the cooling water nozzle 85b can wash away sulfurous acid and salt adhering to the cooling water nozzle 85b. Moreover, it can suppress that sulfurous acid and a salt adhere to the cooling water nozzle 85b by hold | maintaining the state which the cooling water nozzle 85b became wet with the washing | cleaning liquid which fell on the cooling water nozzle 85b, and a cooling water nozzle The temperature rise of 85b can be suppressed.

  In some embodiments, the above-described marine vessel desulfurization apparatus 20 includes an absorption tower 30 including the absorption tower main body 32 in which the exhaust gas inlet 33 described above 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 exhaust gas cooling device 85 described above includes the above-described cooling water nozzle 85b, the above-described cooling water supply pipe 58a (cooling water conduit) for supplying cooling water to the cooling water nozzle 85b, and the cooling water supply pipe 58a ( A cooling water control valve 94 provided in the (cooling water pipeline), which can control the amount of cooling water sprayed from the cooling water nozzle 85b.

  The pressure of the cooling water on the primary side that is upstream of the cooling water control valve 94 (seawater supply pump 54a side) in the cooling water pipeline 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 greatly due to the above-described variation factors, and thus the coolant is introduced into the exhaust gas introduction unit 34. There is a risk that the exhaust gas will be insufficiently cooled. On the other hand, according to the above configuration, the exhaust gas cooling device 85 is introduced into the exhaust gas introduction unit 34 by controlling the amount of cooling water sprayed from the cooling water nozzle 85b by the cooling water control valve 94. It is possible to sufficiently cool the exhaust gas.

  In some embodiments, the above-described cooling water control valve 94 has an opening degree such that the pressure of the cooling water on the secondary side, which is the downstream side (cooling water nozzle 85b side) of the cooling water control valve 94, is constant. Is adjusted to control the amount of cooling water sprayed from the cooling water nozzle 85b.

  As shown in FIG. 19, when the downstream side (rear stream side) of the cooling water supply pipe 58a from the cooling water control valve 94 is the downstream side cooling water supply pipe 58b, a pressure gauge is connected to the downstream side cooling water supply pipe 58b. 95 (fluid pressure detector) 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 cooling water control valve 94 is configured to adjust the opening so that the pressure detected by the pressure gauge 95 becomes constant.

  Since the coolant pressure on the downstream side (rear stream side) of the coolant control valve 94 is made constant by the coolant control valve 94, the coolant pressure when ejected from the coolant nozzle 85b is also constant. The cooling water nozzle 85b always sprays a certain amount or more of cooling water at a certain height. In this case, since a certain amount or more of cooling water can always be sprayed from the cooling water nozzle 85b, the exhaust gas guided into the exhaust gas introduction unit 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, for example, continuously detecting the temperature of the cooling water in the downstream side cooling water supply pipe 58b by a thermometer, etc. Detection is easier than other detection devices. Further, since the pressure on the primary side fluctuates greatly as described above, it is not suitable as an index for adjusting the opening degree of the cooling water control valve 94. For this reason, the cooling water sprayed from the cooling water nozzle 85b by the cooling water control valve 94 is used 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. It is possible to easily control the application amount.
The invention according to some of the embodiments described above can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the marine vessel desulfurization device 20 includes the above-described emergency cooling device 87, the above-described emergency bypass device 89, and the exhaust gas for monitoring the temperature of the exhaust gas discharged from the outlet of the absorption tower 30. And a temperature monitoring device. The exhaust gas temperature monitoring device includes a temperature sensor. When the exhaust gas temperature monitoring device detects a high temperature, the emergency cooling device 87 operates to spray cooling water, and the emergency bypass device 89 operates to cause the exhaust gas to flow into the absorption tower 30. Is prevented. The exhaust gas temperature monitoring device may monitor the temperature of the exhaust gas inside the absorption tower 30. In this case, since the rise in temperature in the absorption tower 30 can be suppressed, it is possible to prevent the absorption tower 30 from being damaged due to a high temperature.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, hypochlorite is added to water such as cleaning liquid and cooling water used in the ship desulfurization apparatus 20. In this case, bioadhesion can be prevented by adding hypochlorite, so that biocorrosion can be suppressed. In land-based desulfurization equipment, seawater is used for boiler condensers and the like, and no biocorrosion countermeasures are used exclusively for the desulfurization equipment.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the exhaust gas inlet 34 has a double outer wall structure. In this case, the exhaust gas introduction part 34 and the cooling water nozzle 85b that contact the exhaust gas first in the absorption tower 30 are easily corroded, and even if the exhaust gas introduction part 34 and the cooling water nozzle 85b are damaged by corrosion, It is possible to prevent the exhaust gas from leaking 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 risk can be avoided.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the exhaust gas introduction unit 34 includes a leak detection device for detecting gas leak or liquid leak due to corrosion such as 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, gas leakage or liquid leakage due to corrosion in the exhaust gas introduction unit 34 can be sensed, and gas leakage or liquid leakage due to corrosion can flow out of the absorption tower 30.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel desulfurization apparatus 20 further includes a cooling tower as a pre-process of the absorption tower 30. In this case, since a 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. In some embodiments, a water circulation type cooling tower is used. In this case, the amount of water required during the navigation of the ship 1 can be suppressed. Furthermore, in some embodiments, industrial water for cooling is used instead of seawater in the water circulation type cooling tower. In this case, compared with seawater that may contain unspecified impurities, only specific impurities such as heavy metals need to be removed, so that waste water treatment can be easily performed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

(Desulfurization system)
In some embodiments, the marine vessel desulfurization apparatus 20 further includes a heat exchanger that recovers heat from the exhaust gas and heats the exhaust gas after the desulfurization treatment. In some embodiments, the heat exchanger includes a rotary heat exchanger, such as a 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 heat sent from the heat recovery unit.

According to said structure, since the exhaust gas after a desulfurization process can be heated with a heat exchanger, while being able to prevent the exhaust gas from becoming white smoke, the diffusibility of exhaust gas can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the ship 1 is provided with a heat medium circulation type non-leak gas gas heater. In this case, heat recovery can be performed from the exhaust gas discharged from the main engine 12 and 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 to heat source equipment such as heating, the fuel used in the ship 1 can be reduced.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel desulfurization apparatus 20 is configured so that the flange joint of the pipe joint portion is reduced. In this case, the efficiency of the pipe joining work can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the ship desulfurization apparatus 20 can be fixed to the absorption tower 30 or the exhaust heat recovery apparatus 60 by welding, for example, among equipment and parts such as piping, and is transported to the ship 1 by a lifting machine. It is fixed in advance during prefabrication, which will be described later, which is a pre-process of work. In this case, it is possible to prevent the positions of the instruments and parts from shifting when transported to the ship 1. Moreover, since the assembly work in the ship 1 can be reduced, the efficiency of the work of attaching the ship desulfurization device 20 to the ship 1 can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the piping in the marine vessel desulfurization apparatus 20 is a resin piping, and the end portion is configured to be connectable by a socket. Moreover, in some embodiments, the resin in the socket in the ship desulfurization apparatus 20 and the pipe connecting the pipes is wound. In these cases, the corrosion resistance of the piping and socket can be improved. In some embodiments, rubber pipes are used at locations where the pipes are connected to each other so that the pipes can be easily aligned. In this case, since the pipes can be easily aligned, the efficiency of pipe installation work can be improved.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, it is configured to generate bubbles in the bottom of the ship and generate bubbles in seawater. In this case, the navigation resistance of the ship 1 can be reduced by the foam. Moreover, the pH value of the waste water discharged | emitted out of a ship from the ship desulfurization apparatus 20 can be raised by generating a bubble in the ship bottom drain part vicinity. Here, the wastewater discharged out of the ship from the ship desulfurization apparatus 20 is diluted by being mixed with the seawater outside the ship, and has a pH higher than that of the wastewater immediately after being discharged from the ship desulfurization apparatus 20. The value has risen to some extent. And since the decarbonation process by a foam is accelerated | stimulated compared with the waste_water | drain immediately after discharged | emitted from the ship desulfurization apparatus 20, the pH value can raise a pH value largely.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

(Desulfurization tower assembly method)
For example, a land-based desulfurization device provided in a power plant is assembled by a block method or a panel method. However, the ship desulfurization apparatus is not easy to assemble because the aspect ratio of the water tower may be different. And it is not realistic to assemble the ship desulfurization apparatus on the ship where the work space and work time on the ship are limited. For this reason, assembling a ship desulfurization apparatus requires three operations: assembly work on land, suspension work on a ship, and installation work on a ship. And in order to reduce the working time on a ship, it is necessary to reduce the installation work in a ship. Moreover, since the desulfurization apparatus for ships is suspended in a ship with 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 form at a nearby factory or an assembly place such as a vacant land, 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, installation work on the ship 1 can be reduced and work time on the ship 1 can be reduced.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, as for absorption tower 30, the wall which constitutes absorption tower 30, and piping arranged around absorption tower 30 are being fixed integrally. In this case, since the wall surface of the absorption tower 30 and the pipe are integrally fixed, the pipe can easily maintain the level. 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the absorption tower 30 is assembled by a block method. In other words, the absorption tower 30 is manufactured for each of several layered portions such as a circular slice, and is completed by stacking the layered portions and connecting the portions together. In this case, the absorption tower 30 is completed by stacking the respective layered parts and connecting the parts together, so that the working time at the assembly site can be shortened. In addition, the block method requires labor and time for transportation compared to the panel method.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the absorption tower 30 is assembled by a panel method. That is, the absorption tower 30 has a wall surface, a bottom surface, and the like configured by a plate-like member (panel), and is completed by installing the above-described plate-like member on a column, a beam, or the like. In this case, the absorption tower 30 is composed of plate-like members, columns, beams, and the like. Therefore, it is only necessary to transport these plate-like members, columns, beams, etc. to the place where they are assembled. The member can be easily transported. The panel method requires more work at the assembly site than the block method.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the marine vessel desulfurization apparatus 20 has at least one major part modularized. In this case, since at least one main part is modularized, the marine vessel desulfurization apparatus 20 can shorten the working time at the assembly site.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the absorption tower 30 is configured to be self-supporting. The above-described water spray pipe (including the longitudinal water spray pipe 38 a 1, the short water spray pipe 38 b 1, and the water spray pipe 85 a) is inserted into the self-supporting absorption tower 30 and installed inside the absorption tower 30. Furthermore, the above-described packing 35 </ b> A is also inserted into the self-supporting absorption tower 30 and installed inside the absorption tower 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 dispose the above-described water sprinkling pipe and packing 35 </ b> A inside the absorption tower 30. Such an absorption tower 30 can shorten the working time at the assembly site.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, a plurality of the longitudinal watering pipes 38a1 described above are provided at equal intervals in the short direction of the internal space 31, and each of the plurality of longitudinal watering pipes 38a1 is arranged in a staggered manner. And the adjacent longitudinal watering pipes 38a1 are arranged so that their height positions are different from each other.
In some other embodiments, the short-side watering 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-side watering pipes 38b1 is staggered. It arrange | positions and it arrange | positions so that the adjacent short-side watering pipe 38b1 and a mutual height position may differ.
In some other embodiments, a plurality of the above-described water spray pipes 85a are provided at equal intervals in the exhaust gas introduction unit 34, and each of the plurality of water spray pipes 85a is arranged in a staggered manner and adjacent to each other. It arrange | positions so that the water spray pipe 85a and a mutual height position may differ.
In these cases, since the cleaning liquid and the cooling water can be supplied uniformly, the local unevenness of the spraying ability can be reduced.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

In some embodiments, the watering nozzle 38a2 is integrated with the longitudinal watering pipe 38a1 without using bolts or the like.
In some other embodiments, the watering nozzle 38b2 is integrated with the short-side watering pipe 38b1 without using bolts or the like.
In some other embodiments, the cooling water nozzle 85b is integrated with the water spray pipe 85a without using bolts or the like.
In these cases, high strength can be achieved by integrating the watering nozzle with the watering pipe. In addition, since seawater desulfurization does not have a worry about clogging, it is possible to make the watering nozzle and the watering pipe integrated.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

(Installation method 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 ship desulfurization apparatus is not easy to assemble because the aspect ratio of the water tower may be different. And it is not realistic to assemble the ship desulfurization apparatus on the ship where the work space and work time on the ship are limited. For this reason, after assembling the desulfurization apparatus on land, it is necessary to suspend the desulfurization apparatus on a ship with a lifting machine or the like. And the desulfurization apparatus for ships needs the intensity | strength which can endure the operation | work suspended with a lifting machine etc. to a ship, the reinforcement at the time of suspension, etc. are needed. Further, a ship desulfurization apparatus may cause deformation of a water tower or peeling of a lining inside the water tower during an operation of suspending the ship with a lifting machine or the like.

In some embodiments, the absorption tower 30 is delivered in an integrated state with internal components pre-installed. For this reason, the absorption tower 30 can be installed in the ship 1 in the shipyard in the integrated state mentioned above. In addition, the absorption tower 30 can be replaced while maintaining the above-described integrated state at the time of maintenance, so that the time required for maintenance work can be shortened.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  FIG. 21 is a view for explaining fixing of an absorption tower and a steel plate structure in a marine vessel desulfurization apparatus according to an embodiment of the present invention. FIG. 22 is a view for explaining the installation of the absorption tower and the steel plate structure of the ship desulfurization apparatus according to the embodiment of the present invention on the ship. In some embodiments, the absorption tower 30 and the exhaust gas introduction device 40 are assembled on land, and as shown in FIG. 21, the absorption tower 30 and the exhaust gas introduction device 40 are surrounded by a steel plate structure 6 surrounding the absorption tower 30 and the exhaust gas introduction device 40. 30 and the exhaust gas introducing device 40 are firmly fixed. Then, as shown in FIG. 22, the absorption tower 30 and the exhaust gas introduction device 40 are suspended on a ship 1 together with the steel plate structure 6 and placed on the ship 1, and together with the steel plate structure 6. It is installed in the ship 1. In addition, the steel plate structure 6 may cover only the absorption tower 30. Further, the steel plate structure 6 may be fixed with devices, piping, wiring, and the like related to exhaust gas desulfurization processing such as the exhaust heat recovery device 60 and the heat exchanger described above.

According to the above configuration, the absorption tower 30 and the exhaust gas introduction device 40 are suspended on a lifting machine or the like together with the steel plate structure 6, so that the absorption tower 30 and the exhaust gas introduction when suspended or placed on the ship 1. It is possible to prevent the device 40 from being deformed and to prevent peeling of the lining inside the absorption tower 30.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

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 91 </ b> A that extends parallel to each of a pair of longitudinal wall surfaces located on both ends in the short direction of the steel plate structure 6. And a prismatic short-direction fixing member 91 </ b> B having a prism shape extending in parallel with each of a pair of short-side wall surfaces located on both ends in the longitudinal direction of the steel plate structure 6. Each of the longitudinal direction fixing member 91 </ b> A and the short direction fixing member 91 </ b> B is fixed to the steel plate structure 6 at both ends, and is fixed to the absorption tower 30 or the exhaust gas introduction device 40 at the middle part of the length. Note that some of the longitudinal direction fixing member 91 </ b> A and the short direction fixing member 91 </ b> B may be fixed to piping connected to the absorption tower 30 or the exhaust gas introduction 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  In some embodiments, the absorption tower 30 is assembled and installed in the ship 1 by the following method. That is, the absorption tower 30 is assembled on the land by the block method or the 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-mentioned water spray pipe and the above-described packing 35 </ b> A are installed in the absorption tower 30. After installing the attachment, the steel plate structure 6 described above is put on and the absorption tower 30 and the steel plate structure 6 are firmly fixed. And the piping connected to the absorption tower 30 etc. in the 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 hung on a lifting machine or the like and placed on the ship 1.

According to the above configuration, the absorption tower 30 is assembled on land, 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 attachments and pipes are attached before the steel plate structure 6 is covered, a large work area can be secured. For example, it is advantageous in the operation of putting spray piping from the outside of the absorption tower 30. And since the absorption tower 30 and the steel plate structure 6 are firmly fixed on land, the work performed on board can be reduced. Further, the absorption tower 30 is suspended in a lifting machine or the like together with the steel plate structure 6 while being fixed in the steel plate structure 6, so that the steel plate structure 6 is suspended or placed on the ship 1. As a reinforcing material, it is possible to prevent the absorption tower 30 from being deformed. Moreover, peeling of the lining inside the absorption tower 30 and the piping in the steel plate structure 6 can be prevented from coming off.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  In some embodiments, the absorption tower 30 is assembled and installed in the ship 1 by the following method. That is, the steel plate structure 6 is first installed at the assembly site on land, and the absorption tower 30 is assembled in the steel plate structure 6. In addition, a maintenance stage for rain-resistant wind may be provided in the steel plate structure 6.

According to said structure, since the absorption tower 30 is assembled in the steel plate structure 6 on land, the situation where the absorption tower 30 cannot be accommodated in the steel plate structure 6 can be avoided. In addition, by fixing the absorption tower 30 to the steel plate structure 6, the attachment in the absorption tower 30 can be attached to the absorption tower 30 even in a structure in which the absorption tower 30 cannot stand by itself.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  In some embodiments, the absorption tower 30 is assembled and installed in the ship 1 by the following method. That is, the absorption tower 30 and the steel plate structure 6 are integrated, and the absorption tower 30 and the steel plate structure 6 are manufactured for each of several layered parts such as round slices, and the respective layered parts are stacked to connect the parts. It comes to be completed by uniting.

According to said structure, since the absorption tower 30 and the steel plate structure 6 are integrally assembled on the land by a block construction method, the working time in an assembly place can be shortened. In addition, even in a structure in which the absorption tower 30 cannot stand on its own, an accessory in 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 work performed on board can be reduced.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

(Control, operation method, seawater adjustment)
There is a risk that the operating condition of the ship 1 may change during navigation due to weather conditions, the sea area where the ship navigates, and the like. Further, it is desirable that the ship 1 does not consume extra power during navigation.

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

  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 the branch point TP2. The bypass line 97B for supplying the cleaning liquid to the above-described storage space 31a in which the sprayed cleaning liquid sprayed to the exhaust gas guided to the internal space 31 is stored, and the control valve 98 provided in the bypass line 97B. And a control valve 98 capable of controlling the supply amount of the cleaning liquid flowing through the bypass line 98B.

  In the illustrated embodiment, the cleaning liquid supply device 96 includes the seawater supply device 50 described above for supplying seawater as a cleaning liquid to the spraying device 38. The cleaning liquid supply line 97A includes a seawater supply pipe 58, and the bypass line 97B includes a branch pipe 58c. The branch pipe 58c has one end connected to the seawater supply pipe 58 at the branch point TP2 provided in the seawater supply pipe 58 that connects the seawater supply pump 54a and the water spray pipe 38c1 of the spraying device 38, and the other end is an absorption tower. It is connected to 30 storage spaces 31a (internal space 31). For this reason, a part of the cleaning liquid (seawater) flowing through the seawater supply pipe 58 passes through the branch pipe 58c and flows into the storage space 31a. In other embodiments, 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 required desulfurization performance differs between the emission-regulated sea area (ECA sea area) and the general sea area, the required amount of cleaning liquid supplied to the spraying device 38 is also different. When the amount of the cleaning liquid supplied to the spraying device 38 is less than the required amount, the necessary desulfurization effect may not be obtained. Further, when the amount of the cleaning liquid supplied to the spraying device 38 is larger than the required amount, the pressure loss of the exhaust gas may increase. As a measure for adjusting the amount of the cleaning liquid supplied to the spraying device 38, a control valve is provided in the cleaning liquid supply line 97A for supplying the cleaning liquid to the spraying device 38, and the cleaning liquid supply line 97A is provided by the control valve. It is conceivable to control the supply amount of the flowing cleaning liquid. However, since the pipe line constituting the cleaning liquid supply line 97A has a large diameter, there is a possibility that the control valve provided in the cleaning liquid supply line 97A is enlarged and expensive. Further, 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 through the cleaning liquid supply line 97A by controlling the supply amount of the cleaning liquid flowing through the bypass line 97B by the control valve 98 provided in the bypass line 97B. It can be controlled indirectly. At this time, the diameter of the pipe line (dividing pipe 58c) constituting the bypass line 97B can be made smaller than the diameter of the pipe line (seawater supply pipe 58) constituting the cleaning liquid supply line 97A. Therefore, the control valve 98 provided in the bypass line 97B. Compared to the control valve provided in the cleaning liquid supply line 97A, the size and the 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 (spreading device 38 side) of the cleaning liquid supply line 97A from the branch point TP2 where the bypass line 97B branches. The flow meter 99 is configured to be able to measure the flow rate (volume flow rate) of the cleaning liquid flowing downstream from the branch point TP2 of the cleaning liquid supply line 97A. The control valve 98 described above is configured to adjust the opening so that the flow rate detected by the flow meter 99 falls within a predetermined range. In this case, since a desired amount of cleaning liquid is supplied to the spraying device 38, a necessary desulfurization effect can be obtained and an increase in the pressure loss of the exhaust gas can be suppressed. In other embodiments, the flow rate may be detected indirectly by multiplying the flow velocity detected by the anemometer with the cross-sectional area. That is, the above-described flow rate detection device includes an anemometer. 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 of the embodiments described above can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less.

  In some embodiments, the vessel 1 further includes a control device for controlling devices and equipment such as the absorption tower 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 controls the number of operating watering nozzles described above or the number of pumps operated. In addition, the watering nozzle used as operation object may be selected according to the position of the watering nozzle mentioned above. In this case, the power consumption of the ship 1 can be suppressed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the control device described above performs control for adjusting the supply amount of the cleaning liquid and the cooling water to the watering nozzle described above, for example, by adjusting the opening degree by a movable blade type pump or by controlling the number of pumps operated. In this case, the power consumption of the ship 1 can be suppressed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the control device described above controls the number of operating sprinkling nozzles described above, the number of operating pumps, and the above-described opening adjustment according to the SO2 concentration of the exhaust gas discharged from the absorption tower 30. At least one of the control to adjust the supply amount to the watering nozzle by the is performed. In this case, since it is possible to perform control according to the exhaust gas treatment capacity of the absorption tower 30, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the control device described above controls the number of water nozzles that are operated according to properties such as the pH value and alkalinity of seawater introduced into the ship body 2 by the seawater supply pump 54a. And at least one of the control which adjusts the supply amount to the watering nozzle by the opening degree adjustment mentioned above is performed. In this case, since the 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the control device described above outputs the output of the ship 1, the SO2 concentration of the exhaust gas before being desulfurized by the absorption tower 30, the S component in the fuel, the exhaust gas after being desulfurized by the absorption tower 30. The operating load of the absorption tower 30 is ascertained by combining the SO2 concentration alone or in combination, and in accordance with the operating load, the control of the number of watering nozzles described above and the supply amount to the watering nozzles by adjusting the opening are described. At least one of the adjustment controls is performed. In this case, since control according 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, a pressure gauge is attached to the header of the watering nozzle described above for monitoring the blockage of the watering nozzle and the operating status of the seawater supply pump 54a. In this case, since the pressure gauge can monitor the blockage of the watering nozzle and the operating state of the seawater supply pump 54a, the above-described control device can efficiently control the ship desulfurization device 20.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the drain pipe 56 or the seawater drain pipe 59 is equipped with an analyzer for constantly observing the properties of desulfurized wastewater (scrubber wastewater, wastewater after dilution) such as pH value and desulfurization rate. Yes. In this case, since the properties of the desulfurization effluent can always be observed by the analyzer, the control device described above can efficiently control the ship desulfurization device 20.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the above-described control device may control the pH value and desulfurization of the desulfurization wastewater even if the number of absorption towers 30 that wash the exhaust gas, the load of each absorption tower 30, and the S component of the fuel oil fluctuate. In order for the rate to satisfy a predetermined condition, the minimum required number of seawater pumps (seawater supply pump 54a, drainage dilution pump 52a) are controlled to operate. In this case, since the required minimum number of seawater pumps are operated, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the following control method of the marine vessel desulfurization device 20 is performed by the control device described above. That is, the amount of seawater required for each combination of the four items of draft that varies depending on the S component of the fuel oil, the engine load, the seawater concentration for each region, and the amount of product load is stored in a database. Based on the control method, a control method for supplying an appropriate amount of seawater to devices and instruments in the ship 1 such as the absorption tower 30 is performed by feedforward control. In this case, since an appropriate amount of seawater is supplied by feedforward control, the power consumption of the ship 1 can be efficiently suppressed.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the following control method of the marine vessel desulfurization device 20 is performed by the control device described above. That is, the pH value and sulfurous acid concentration in the drainage section of the ship 1 or the SO2 concentration of the exhaust gas discharged from the absorption tower 30 is detected, and feedback control based on the pH value and sulfurous acid concentration described above by the control device described above. A control method for supplying an appropriate amount of seawater to devices and instruments in the ship 1 such as the absorption tower 30 is performed. 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 this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, as an analytical method for monitoring the concentration of sulfurous acid in the desulfurization effluent, a constant amount of acid is continuously added to the separable flask while a part of the desulfurization effluent is continuously supplied to the separable flask with a stirrer. At this time, a method is used in which the gas concentration of sulfur dioxide (SO2) moving from sulfurous acid to the gas phase is measured with an infrared SO2 meter (infrared gas analyzer). In this case, the concentration of sulfurous acid in the desulfurized wastewater can be monitored, and the control device described above can perform control according to the concentration of sulfurous acid in the desulfurized wastewater with respect to the watering nozzle described above.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

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 rotation speed control. In this case, the amount of seawater supplied to the absorption tower 30 and the like can be made appropriate.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

(Maintenance method, structure)
Since the ship desulfurization apparatus 20 collects exhaust gas introduction pipes of all engines including the main engine 12 and the auxiliary engine 14 on the ship 1 and inputs them into the absorption tower 30, at least one of the exhaust gas dampers is provided. The high-temperature exhaust gas flows on the primary side (upstream side of the exhaust gas damper). For this reason, if the exhaust gas leaks from the exhaust gas damper when the absorption tower 30 is inspected, the worker engaged in the inspection work may become dangerous. Further, at the time of maintenance, at least one of the main engine 12 and the auxiliary engine 14 needs to be operated, and the ship 1 cannot stop all of the main engine 12 and the auxiliary engine 14. There is a circumstance that it cannot stop being discharged.

In some embodiments, in the marine vessel desulfurization apparatus 20, two exhaust gas dampers provided in at least one place are arranged in series, and compressed air is introduced 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 the exhaust gas can be reliably prevented from passing between the exhaust gas dampers and flowing to the other. be able to.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, marine desulfurization apparatus 20 includes at least one exhaust damper including a switchable closing flange. In this case, since the exhaust gas damper includes a switching type closing flange, it is possible to reliably prevent the exhaust gas from passing between the exhaust gas dampers and flowing to the other.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, in the marine vessel desulfurization apparatus 20, at least one exhaust gas damper includes a guillotine damper (gate damper). Here, the guillotine damper is electrically driven to open and takes time, but it closes for a moment. Each of the plurality of exhaust gas dampers may include a guillotine damper, and may be a guillotine damper that closes a round duct, for example. In this case, since the exhaust gas damper includes the guillotine damper, it is possible to reliably prevent the exhaust gas from passing between the exhaust gas dampers and flowing to the other.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel desulfurization apparatus 20 further includes a bypass flow path for flowing exhaust gas during maintenance so that the exhaust gas does not pass through the exhaust gas damper during maintenance. In this case, since the exhaust gas flows through the bypass passage instead of the exhaust gas damper during maintenance, it is possible to prevent the worker engaged in the inspection work from becoming dangerous.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

In some embodiments, the marine vessel desulfurization apparatus 20 includes at least one exhaust gas damper including a guillotine damper. During 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 damper corresponding to the main engine 12 and the auxiliary engine 14 to be operated is closed, it is possible to prevent the worker engaged in the inspection work from becoming dangerous.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

(Exhaust gas channel 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 piping operation in the steel plate structure 6 is difficult or the piping cannot be managed.

In some embodiments described above, as shown in FIGS. 3 and 4, the exhaust gas introduction pipes 44 a to 44 d for auxiliary equipment for guiding the exhaust gas discharged from the auxiliary engine 14 to the absorption tower main body 32 are provided with the exhaust gas introduction. It is connected to the tube 42. In some embodiments, the exhaust gas introduction pipes 44c and 44d for auxiliary equipment 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 and connected to the exhaust gas introduction part 34. The exhaust gas is led directly. In addition, the exhaust gas introduction pipes 44 a and 44 b for auxiliary equipment described above 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, since the degree of freedom of the connection positions of the auxiliary machine exhaust gas introduction pipes 44a to 44d is improved, the auxiliary machine exhaust gas introduction pipes 44a to 44d can be connected to a position where the handling work is easy. Moreover, it can suppress that the length dimension of the exhaust gas introduction pipes 44a-44d for auxiliary machines becomes large.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

FIG. 23 is a diagram for explaining the connection between the absorption tower and the exhaust gas introduction pipe of the marine vessel desulfurization apparatus according to the embodiment of the present invention. As shown in FIG. 23, in some embodiments, the exhaust gas introduction pipes 44c and 44d for auxiliary equipment described above have the side wall 32e opposite to the side to which the exhaust gas introduction part 34 of the absorption tower main body part 32 is connected. The exhaust gas is directly guided to the internal space 31 of the absorption tower body 32. The auxiliary machine exhaust gas introduction pipes 44a and 44b may be connected to the side wall 32e, and the auxiliary machine exhaust gas introduction pipes 44a to 44d are connected to the exhaust gas introduction part 34 of the absorption tower main body 32. It may be connected to the side wall 32f adjacent to the side wall. In this case, since the degree of freedom of the connection positions of the auxiliary machine exhaust gas introduction pipes 44a to 44d is improved, the auxiliary machine exhaust gas introduction pipes 44a to 44d can be connected to a position where the handling work is easy. Moreover, it can suppress that the length dimension of the exhaust gas introduction pipes 44a-44d for auxiliary machines becomes large.
The invention according to this embodiment can also be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and a round absorption tower.

  In the several embodiments described above, the configuration in which one exhaust gas inlet 33 is provided has been described, but 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 the embodiment of the present invention, and FIG. 24 (a) is a schematic top view. FIG. 24B is a schematic front view. As shown in FIGS. 24A and 24B, the exhaust gas introduction ports 33 can be provided on both sides of the absorption tower 30. 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, an exhaust gas introduction pipe is placed beside the absorption tower 30. There is no need to make a detour and it is not necessary to route 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 in which the hull-integrated desulfurization apparatus 100 is suspended by the crane 108 when the hull-integrated desulfurization apparatus 100 is incorporated in the hull structure of the ship 1, and FIG. 26 is placed on the upper part of the engine casing 106 described later. Indicates the state.

As shown in FIGS. 25 and 26, the hull-integrated desulfurization apparatus 100 includes a casing 102 that forms a part of the hull structure of the ship, and an absorption tower 104 that is supported by the casing 102. The absorption tower 104 desulfurizes exhaust gas discharged from exhaust gas generators such as the main engine 12 and the auxiliary engine 14 mounted on the ship.
The conventional ship desulfurization apparatus is independent from the hull structure as one of the machinery 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 that forms a part of the hull structure before being mounted on the ship. In this hull-integrated desulfurization apparatus 100, a casing 102 is connected to another hull structure of a ship on the ship.

  According to the above configuration, since the casing 102 that supports the absorption tower 104 forms a part of the hull structure, extra clearance around the absorption tower 104, reinforcement for the purpose of vibration isolation and anti-vibration of the absorption tower 104 is provided. A member becomes unnecessary. Therefore, the mounting structure of the absorption tower 104 can be made compact.

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

In one embodiment, as shown in FIG. 26, when the hull-integrated desulfurization device 100 is mounted on a ship, it is disposed on the upper portion of the engine casing 106. The absorption tower 104 is supported from the surroundings by the casing 102, and a support portion for supporting the absorption tower 104 from below is not necessary. Therefore, a gap s1 is formed between the absorption tower 104 and the engine casing 106 positioned below the absorption tower 104. It is formed.
According to this embodiment, since the support part which supports the absorption tower 104 from the downward direction becomes unnecessary, and the gap s1 can be formed, the liquid pipe (seawater supply pipe, seawater discharge) through which the absorbing liquid stored in the engine casing 106 flows. Pipe), and there is an advantage that piping such as exhaust gas piping for introducing exhaust gas discharged from an exhaust gas generator such as a main engine into the absorption tower 104 can be arranged in the gap s1.

In one embodiment, the casing 102 is made of a general 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.
In one embodiment, the integrated desulfurization apparatus structure is designed to perform vibration analysis so that it does not resonate with the natural frequency of the main engine or 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 such that the length along the width direction of the ship (the direction of arrow a in FIG. 25) is 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, the absorption tower 104 supported by the casing 102 is disposed along the longitudinal direction of the ship. As compared with an absorption tower having a longitudinal direction along the bow-stern direction of the ship, the bending stress acting on the absorption tower 104 when the ship rolls can be reduced. Therefore, it can be set as the absorption tower which has high resistance with respect to rolling.

In one embodiment, as shown in FIG. 25 and FIG. 26, the casing 102 is formed in a long cylinder shape whose 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 that is originally concentrated at the base of the absorption tower 104 is dispersed in the casing 102, the support structure of the absorption tower 104 can be made compact.
25 and 26, the wall on the near side of the casing 102 is deleted and displayed for visualization of the casing 102.

As shown in FIGS. 25 and 26, the ship 1 according to an embodiment includes a hull-integrated desulfurization device 100, and the hull-integrated desulfurization device 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 extra clearance around the absorption tower 104, vibration proofing and shaking prevention of the absorption tower 104 is provided. A member becomes unnecessary. Therefore, the mounting structure of the absorption tower 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, the absorption tower 104 is supported by the casing 102 that forms a part of the hull structure of the ship 1. Therefore, 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 where the absorption tower 104 is supported and the engine casing 106 is short, the length of the exhaust gas pipe for introducing the exhaust gas discharged from the main engine accommodated in the engine casing 106 into the absorption tower 104 is reduced. Can be shortened.

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

In one embodiment, as shown in FIG. 27, the stiffener 114 is installed between the outer shell walls 110 of the casing 102 facing each other. The stiffener 120 is installed between the outer shell walls 110 inside, for example, the upper region of the outer shell walls 116 facing each other of the engine casing 106. The rib 118 provided in the engine casing 106 is 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 that supports the absorption tower 104 is increased. The casing 102 can be stably supported.

In one embodiment, as shown in FIG. 25, the engine casing 106 is formed by inclining specific ribs 112 a and 112 b (see FIG. 25) among the ribs 112 constituting the outer shell wall 110 at the lowermost portion of the casing 102. The ribs 118 or the stiffeners 120 constituting the second reinforcing member are made to coincide with each other. Thereby, the support strength of the casing 102 by the engine casing 106 can be increased.
In one embodiment, the stiffener 114 shown in FIG. 27 may be inclined so as to coincide with the position of the rib 118 or the stiffener 120 constituting the second reinforcing member. Thereby, the support strength of the casing 102 by the engine casing 106 can be increased.

In one embodiment, as shown in FIG. 28, in a state where the hull-integrated desulfurization device 100 is mounted on the ship 1, the absorption tower 104 includes the exhaust gas pipe 122 of the exhaust gas generator such as the main engine 12 or the auxiliary engine 14. It is located above.
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 that introduces the exhaust gas discharged from the exhaust gas generator into the absorption tower 104 can be shortened. .

In one embodiment, piping 124 is supported by 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 an absorption liquid used in the absorption tower 104 flows.
According to this embodiment, by supporting the pipes with the casing 102 that forms a part of the hull structure of the ship 1, the support structure for the auxiliary equipment of the absorption tower 104 including these pipes can be made compact. Further, 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 needs to be changed, so that it can be handled by modularization, and cost can be reduced.

In one embodiment, as shown in FIG. 30, the hull structure of the ship 1 is welded to the casing 102 adjacent to the casing 102 in the casing 102 and the width direction (arrow a direction) of the ship 1. And other hull structures 103.
According to this embodiment, the hull structure arranged in the width direction of the ship 1 is divided into the casing 102 that supports the absorption tower 104 and the other hull structure 103. Can be transported. As a result, it is possible to avoid a situation where the weight of the hull-integrated desulfurization apparatus 100 becomes excessive and the crane capacity is insufficient.

  In some embodiments, as shown in FIGS. 31A and 31B, a rectangular space s2 is formed between the frames 126 constituting the casing 102 in a plan view. FIG. 31A shows an example in which a rectangular absorption tower 104 (104a) is arranged in a square space s2 in the plan view, and FIG. 31B shows a plan view in the square space s2. An example in which a round absorption tower 104 (104b) is arranged is shown. FIG. 31C is an example in which the outer periphery of the absorption tower 104 (104b) shown in FIG. 31B 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 diagram illustrating a method for assembling the hull-integrated desulfurization apparatus 100 according to an embodiment to a ship. As shown in FIG. 32, first, a hull-integrated desulfurization apparatus 100 including a casing 102 that forms a part of a ship's hull structure and an absorption tower 104 is formed on land (desulfurization apparatus forming step S10). Next, the hull-integrated desulfurization device 100 formed in the desulfurization device formation step S10 is attached to the ship (ship attachment step S12). In the desulfurization apparatus forming step S <b> 10, the casing 102 of the hull-integrated desulfurization apparatus 100 and the hull structure other than the casing 102 of the ship 1 are joined.

  According to the above method, in the desulfurization device forming step S10, the hull-integrated desulfurization device 100 is formed in advance at an onshore factory or the like, and after the ship enters the vessel, the hull-integrated desulfurization device 100 is mounted on the ship. . As a result, it is possible to shorten the work period for mounting the absorption tower on the ship. Moreover, before the absorption tower 104 and the casing 102 are integrated, they can be manufactured in parallel and separately, thereby shortening the construction period of the hull-integrated desulfurization apparatus 100.

In one embodiment, in the desulfurization apparatus forming step S10, the absorption tower 104, the casing 102, and the absorption tower 104 are assembled together in the 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 hull-integrated desulfurization apparatus 100 in the order from the lower section to the upper section, and the absorption tower 104 and the casing 102 are simultaneously assembled in parallel to shorten the work period. 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 divided in the vertical direction. In ship attachment step S12, these division | segmentation sections 100a-100c are laminated | stacked in order on the ship 1, and the ship hull integrated desulfurization apparatus 100 is attached to a ship.
According to this embodiment, the hull-integrated desulfurization apparatus 100 forms an aggregate of a plurality of divided sections 100a to 100c that are divided in the vertical direction. Can be transported on board. As a result, it is possible to avoid a situation in which the conveyance capacity of the crane 108 is insufficient.

  In this embodiment, the dividing sections 100a to 100c are assembled with the dividing sessions 104a, 104b and 104c of the absorption tower 104, respectively. Each split session 104a-104c is assembled integrally with the absorber tower 104 when the split sections 100a-100c are assembled on board.

  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 of the present invention can be suitably used for an ultra-large container ship (ULCS) having a container loading capacity of 10,000 TEU or more, for example, but the container loading volume does not exceed 10,000 TEU. It can also be used for container ships that are said to be large or medium-sized, for cargo ships such as tankers and bulk carriers other than container ships, and for general merchant ships such as passenger ships.

  The present invention also includes forms in which the above-described embodiments are appropriately combined. For example, the absorption tower 30 may include an internal space confirmation device 80 and an exhaust gas cooling device 85. In addition, among the inventions according to some of the embodiments described above, there is an invention that can be applied to a rectangular absorption tower having an aspect ratio exceeding 1: 1.1 and outside the range of 1: 6.0 or less, There is also an invention that can be applied to a round absorption tower. These inventions may be applied to rectangular absorption towers having aspect ratios exceeding 1: 1.1 and outside the range of 1: 6.0 or less, and round absorption towers.

  According to one embodiment, it is possible to realize a marine vessel desulfurization device that is excellent in arrangement when arranged on a vessel such as a super-large vessel.

DESCRIPTION OF SYMBOLS 1 Ship 2 Ship main body 3 Upper deck 4 Residential area 6 Steel plate structure 8, 8A, 8B Lateral bulkhead 9 Container 10 Engine room 12 Main engine 14 Auxiliary engine 20 Desulfurization device 30 for ships Absorption tower 31 Internal space 31a Reservation space 31b Lower side Internal space 31c Upper side internal space 31d Outlet side internal space 32 Absorption tower main body 32a, 32b Long wall surface 32c, 32d Short wall surface 33 Exhaust gas inlet 34 Exhaust gas inlet 34A Slanted part 34B Vertical part 34a One end part 34b Other end part 35 Packing layer 35A Packing material 36 Exhaust gas discharge part 37 Mist eliminator 38, 38A, 38B Sprinkling device 38a1 Longitudinal watering pipe 38a2 Sprinkling nozzle 38b1 Short direction watering pipe 38b2 Sprinkling nozzle 39a One side end 39b The other side end 39c One side end 40 Exhaust gas introduction device 42 Exhaust gas introduction pipe 43 Exhaust gas discharge pipe 4 a-44d Auxiliary exhaust gas introduction pipe 45 Exhaust gas inflow pipe 46 Exhaust gas chimney 48a-48d Auxiliary exhaust gas exhaust pipe 50 Seawater supply device 52 First seawater suction box 52a Wastewater dilution pump 54 Second seawater suction box 54a Seawater supply pump 56 Seawater introduction pipe 58 Seawater supply pipe 59 Seawater discharge pipe 60 Waste heat recovery device 70 Cross member 70A Cross beam member 70B Weir plate member 80 Internal space check device 80A View window 81 pH adjuster 81A Locking alkaline agent 82 Partition 83 Ceiling 84 Corrosion protection layer 85 Exhaust gas cooling device 86 Emergency tank 87 Emergency cooling device 88 Emergency cooling water conduit 89 Emergency bypass device 90 Emergency on-off valve 91 Fixing member 92 Wall reinforcing member 93 Partition wall 94 Cooling water control valve 95 Pressure gauge 96 Cleaning liquid supply device 97A Cleaning liquid 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 shell wall 112, 112a, 112b, 118 Rib 114, 120 Stiffener 122 Exhaust gas pipe 124 Pipe 126 Frame p Welding point

Claims (6)

A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship,
An absorption tower including an absorption tower main body portion in which an exhaust gas introduction port that defines an internal space and communicates with the internal space is formed, and an exhaust gas introduction portion connected to the exhaust gas introduction port;
An exhaust gas cooling device that is introduced into the exhaust gas introduction part and can spray cooling water on the exhaust gas before being introduced into the internal space,
The exhaust gas introducing portion includes a slant portion extending obliquely upward from the exhaust gas inlet of the absorber tower main body, and extending upward along a vertical direction from an end portion of the slant portion, and the exhaust gas from above. A vertical portion configured to flow downward,
The exhaust gas cooling device is a cooling water nozzle arranged in the vertical portion, and has a cooling water nozzle configured to eject the cooling water toward the upstream side in the flow direction of the exhaust gas. Desulfurization equipment. A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship,
An absorption tower including an absorption tower main body portion in which an exhaust gas introduction port that defines an internal space and communicates with the internal space is formed, and an exhaust gas introduction portion connected to the exhaust gas introduction port;
An exhaust gas cooling device that is introduced into the exhaust gas introduction part and can spray cooling water on the exhaust gas before being introduced into the internal space,
The exhaust gas introduction part is configured such that the exhaust gas flows from the upper side to the lower side in the vertical direction,
The exhaust gas cooling device is a cooling water nozzle disposed in the exhaust gas introduction part, and has a cooling water nozzle configured to eject the cooling water upward along a vertical direction. . The ship desulfurization apparatus according to claim 1, wherein the cooling water is seawater introduced into the ship. The exhaust gas cooling device includes:
The cooling water nozzle for spraying the cooling water;
A cooling water conduit for supplying the cooling water to the cooling water nozzle;
4. The cooling water control valve provided in the cooling water pipe line, wherein the cooling water control valve is capable of controlling an amount of the cooling water sprayed from the cooling water nozzle. 5. The marine vessel desulfurization apparatus according to the item. A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generator mounted on a ship,
An absorption tower including an absorption tower main body portion in which an exhaust gas introduction port that defines an internal space and communicates with the internal space is formed, and an exhaust gas introduction portion connected to the exhaust gas introduction port;
An exhaust gas cooling device that is introduced into the exhaust gas introduction part and can spray cooling water on the exhaust gas before being introduced into the internal space,
The exhaust gas cooling device includes :
A cooling water nozzle configured to eject the cooling water toward the upstream side in the flow direction of the exhaust gas ;
A cooling water conduit for supplying the cooling water to the cooling water nozzle;
A cooling water control valve provided in the cooling water pipe, and having a cooling water control valve capable of controlling an amount of the cooling water sprayed from the cooling water nozzle,
A pressure gauge provided on the downstream side of the cooling water control valve of the cooling water pipe,
The ship desulfurization device is configured such that the cooling water control valve is configured to adjust an opening degree so that a pressure of the cooling water detected by the pressure gauge becomes constant. A ship carrying the marine vessel desulfurization device according to any one of claims 1 to 5.

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