KR20210126732A - Seawater Desulfurization Device - Google Patents

Abstract

In the seawater desulfurization apparatus, an absorption tower 11 having an exhaust gas inlet 22 and an exhaust gas outlet 23 for exhaust gas G, and an exhaust gas flow path 24 in a vertical direction is provided therein; The exhaust gas flow path 24 is provided with a spraying device 12 for spraying seawater S toward the bottom in the vertical direction with respect to the exhaust gas G flowing upward in the vertical direction, the spraying device 12, A plurality of first pressurized water spray nozzles 31 that are parallel to the exhaust gas flow passage 24 in a horizontal direction to pressurize and spray seawater S, and seawater S is supplied to the plurality of first pressurized water spray nozzles 31 . A seawater supply pump 26 capable of adjusting the spraying area of seawater S by the first pressurized watering nozzle 31, and a plurality of first pressurized watering nozzles 31 can spray seawater S. It has a plurality of second pressurized water spray nozzles 32 that pressurize and spray the seawater S in the area of the exhaust gas flow path 24 where there is no exhaust gas flow path 24 .

Description

Seawater Desulfurization Device

The present invention relates to, for example, a seawater desulfurization apparatus that is mounted on a ship and removes sulfur oxides in exhaust gas.

With the recent strengthening of exhaust gas regulations for ships, in general sea areas, use of fuel oil having a sulfur content of 0.5% or less, or alternative measures having an effect equivalent to this are obligatory. On the other hand, for example, since fuel oil having a sulfur content of 0.5% or less is expensive, a desulfurization device may be mounted on a ship as an alternative measure. As such a desulfurization apparatus, there exist those described in the following patent document, for example.

Japanese Laid-Open Patent Publication No. 2018-517561

In the above-mentioned desulfurization apparatus, the desulfurization process is performed by spraying a cleaning liquid with respect to gas. However, when such a desulfurization apparatus is mounted on a moving body, such as a ship, the direction of spraying a washing|cleaning liquid is deflected by the shaking of a ship during navigation, and there exists a possibility that desulfurization performance may fall.

This invention solves the subject mentioned above, and an object of this invention is to provide the seawater desulfurization apparatus which aims at stabilization and high precision of a desulfurization process.

The seawater desulfurization apparatus of the present invention for achieving the above object is a seawater desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generating source by contacting seawater, it has an inlet and an outlet of the exhaust gas in a vertical direction therein An absorption tower provided with an exhaust gas flow path along , a plurality of first pressurized water spray nozzles that are parallel to the exhaust gas flow path in a horizontal direction to pressurize and spray the sea water, and the sea water can be supplied to the plurality of first pressurized water nozzles and to the first pressure water spray nozzle a seawater supply device capable of adjusting a spraying area of the seawater by the It is characterized by having a nozzle.

For this reason, the plurality of first pressurized watering nozzles pressurize and spray seawater to the exhaust gas flow path, and the plurality of second pressurized watering nozzles are disposed in the exhaust gas flow path through which the plurality of first pressurized watering nozzles cannot spray seawater. Since the seawater is sprayed by pressurizing seawater into the region, even if the seawater supply device supplies seawater to the plurality of first pressurized watering nozzles to adjust the seawater spraying area by the first pressurized watering nozzles, most The area can be sprayed with seawater. As a result, stabilization of the desulfurization process and high precision can be attained.

In the seawater desulfurization apparatus of the present invention, the seawater supply apparatus adjusts the spraying area by changing the spraying angle of the seawater by the first pressurized watering nozzle.

Therefore, since the spraying area is adjusted by changing the spraying angle of the seawater by the first pressure sprinkling nozzle, the spraying area of the seawater by the first pressure sprinkling nozzle can be easily adjusted.

In the seawater desulfurization apparatus of the present invention, the seawater supply apparatus changes the spray angle of the seawater by changing the supply pressure of the seawater supplied to the first pressurized water spray nozzle.

Therefore, the spraying area of the seawater by the first pressurized watering nozzle can be easily adjusted in that the spraying angle of the seawater is changed by changing the supply pressure of the seawater supplied to the first pressurized watering nozzle.

In the seawater desulfurization apparatus of the present invention, the seawater supply apparatus changes the supply pressure of the seawater supplied to the first pressurized watering nozzle according to the flow rate of the exhaust gas flowing through the exhaust gas flow passage.

Therefore, in that the supply pressure of seawater supplied to the first pressurized watering nozzle is changed according to the flow rate of the exhaust gas flowing through the exhaust gas flow path, an amount of seawater that is optimal for the flow rate of the exhaust gas is sprayed from the first pressurized watering nozzle. can do.

In the seawater desulfurization apparatus of the present invention, the plurality of first pressure watering nozzles spray the seawater to form a cone shape, and the plurality of second pressure watering nozzles to spray the seawater to form an elliptical cone shape. do it with

Therefore, since the seawater is sprayed from the second pressurized watering nozzle so as to form an elliptical cone, the seawater can be appropriately sprayed to an area where the first pressurized watering nozzle cannot spray seawater.

In the seawater desulfurization apparatus of the present invention, the plurality of first pressurized watering nozzles spray the seawater to form a pyramidal shape, and the plurality of second pressurized watering nozzles spray the seawater to form an elliptical cone shape. do it with

Therefore, in that the seawater is sprayed from the first pressure watering nozzle to form a pyramidal shape and the seawater is sprayed from the second pressure watering nozzle to form an elliptical cone shape, in the area where the first pressure watering nozzle cannot spray seawater. It is possible to properly spray seawater.

In the seawater desulfurization apparatus of the present invention, the seawater supply device is capable of supplying the seawater to the plurality of first pressurized watering nozzles and the plurality of second pressured watering nozzles. The injection amount of seawater is larger than the injection amount of the seawater by the plurality of second pressure watering nozzles.

Therefore, since the amount of seawater injected by the plurality of first pressurized watering nozzles is larger than the amount of seawater injected by the plurality of second pressured watering nozzles, it is possible to spray an optimal amount of seawater without being excessive to the exhaust gas.

In the seawater desulfurization apparatus of the present invention, the plurality of second pressurized water spray nozzles are arranged along the inner wall surface of the absorption tower and in a horizontal direction.

Therefore, seawater injected from the first pressurized watering nozzle is supplied to the central portion of the exhaust gas flow path, and seawater injected from the second pressurized watering nozzle is supplied to the outer peripheral portion of the exhaust gas flow path, so that the entire area of the exhaust gas flow path is It is possible to efficiently spread seawater over the

In the seawater desulfurization apparatus of the present invention, a filling layer in which fillings are stacked in the vertical direction opposite to the vertical direction downward in the spraying device is provided, and a plurality of through holes are formed between the spraying device and the filling layer A rectifying member is disposed.

Therefore, in terms of arranging the rectifying member having a plurality of through-holes formed between the spraying device and the filling layer, the seawater sprayed from the spraying device is uniformly diffused in the direction intersecting the exhaust gas flow path by the rectifying member and filled. It comes to be supplied to a layer, and seawater can be spread|dispersed efficiently over the whole area of an exhaust gas flow path.

In the seawater desulfurization apparatus of the present invention, the exhaust gas generating source is an internal combustion engine mounted on a ship, and the exhaust gas discharged from the internal combustion engine is contacted with seawater to desulfurize.

Therefore, since the seawater desulfurization apparatus is mounted on a ship, the exhaust gas discharged|emitted from the internal combustion engine mounted on the ship is made to contact seawater, and it desulfurizes, and exhaust gas can be purified efficiently.

The seawater desulfurization apparatus of the present invention is a seawater desulfurization apparatus for desulfurizing exhaust gas discharged from an exhaust gas generating source by contacting seawater. an absorption tower comprising an absorption tower, a spraying device for spraying seawater as a washing liquid toward a vertical downward direction with respect to an exhaust gas flowing upward in the vertical direction through the exhaust gas flow path; It is characterized by providing the filling layer in which the filling material is laminated|stacked in the vertical direction, and the rectification|straightening member arrange|positioned between the said spreading|spreading apparatus and the said filling layer and in which the some through-hole was formed.

Therefore, in terms of arranging the rectifying member having a plurality of through-holes formed between the spraying device and the filling layer, the seawater sprayed from the spraying device is uniformly diffused in the direction intersecting the exhaust gas flow path by the rectifying member and filled. It comes to be supplied to a layer, and seawater can be spread|dispersed efficiently over the whole area of an exhaust gas flow path. As a result, stabilization of the desulfurization process and high precision can be attained.

ADVANTAGE OF THE INVENTION According to the seawater desulfurization apparatus of this invention, stabilization and high precision of a desulfurization process can be aimed at.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the seawater desulfurization apparatus of 1st Embodiment.
It is a top view which shows the seawater spraying apparatus.
3 : is a side view which shows the seawater spraying apparatus.
4 : is a top view which shows the effect|action of the seawater spraying apparatus.
5 : is a side view which shows the action|action of a seawater spraying apparatus.
It is a top view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 2nd Embodiment.
7 : is a side view which shows the effect|action of a seawater spraying apparatus.
It is a top view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 3rd Embodiment.
It is a side view which shows the effect|action of the seawater spraying apparatus.
It is a side view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 4th Embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment, Moreover, when embodiment exists in multiple numbers, what is comprised by combining each embodiment is also included.

[First embodiment]

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the seawater desulfurization apparatus of 1st Embodiment.

In the first embodiment, as shown in FIG. 1 , the seawater desulfurization device 10 is mounted on a ship, and sulfuric acid contained in exhaust gas G discharged from a diesel engine (internal combustion engine) applied to a main engine or the like. To remove the cargo (SOx).

The seawater desulfurization apparatus 10 includes an absorption tower 11 , a spraying apparatus 12 , a packed bed 13 , and a mist eliminator 14 .

The absorption tower 11 has an absorption tower body portion 21 , an exhaust gas introduction portion (inlet portion) 22 , and an exhaust gas outlet portion (outlet portion) 23 . The absorption tower body 21 has a box-like shape, and an exhaust gas flow path 24 along the vertical direction is provided therein. The absorption tower body part 21 is provided with an exhaust gas introduction part 22 communicating with the exhaust gas flow path 24 on the lower side in the vertical direction. The exhaust gas G introduced into the exhaust gas flow path 24 from the exhaust gas introduction part 22 passes through the exhaust gas flow path 24 and flows upward in the vertical direction. Moreover, the exhaust gas line L11 which guides the exhaust gas G discharged|emitted from the diesel engine E is connected to the exhaust gas introduction part 22. As shown in FIG.

The absorption tower body portion 21 is provided with an exhaust gas lead-out portion 23 communicating with the exhaust gas flow passage 24 at an upper end portion in the vertical direction. The exhaust gas G introduced into the exhaust gas flow path 24 from the exhaust gas introduction unit 22 rises the exhaust gas flow path 24 and is discharged from the exhaust gas outlet 23 to the outside. Moreover, in the absorption tower body part 21, the storage part 25 is provided in the lower part in a vertical direction. The storage part 25 stores the seawater S as the sprayed washing liquid, and is provided below the connection part of the exhaust gas introduction part 22 in the absorption tower body part 21 in the vertical direction.

The absorption tower body portion 21 is provided with a packed layer 13 . The packed layer 13 is provided above the connection part of the exhaust gas introduction part 22 in the absorption tower body part 21 in the vertical direction. In the filling layer 13, for example, a plurality of fillings are stacked in a vertical direction, and exhaust gas G is allowed to pass therethrough.

The absorption tower main body 21 is provided with a spraying device 12 . The spraying device 12 is provided above the packed layer 13 in the absorption tower main body 21 in the vertical direction. The spraying apparatus 12 sprays the seawater S toward the downward direction of the vertical direction with respect to the exhaust gas G which flows toward the upper direction of the vertical direction through the exhaust gas flow path 24. As shown in FIG. The seawater S sprayed by the spraying device 12 is exhausted when the exhaust gas G which flows through the surface of the packing layer 13 and rises up the exhaust gas flow path 24 passes through the packing layer 13 . When gas G and seawater S come into gas-liquid contact, sulfur oxides contained in exhaust gas G are removed.

The absorption tower body 21 is provided with a mist eliminator 14 . The mist eliminator 14 is vertically upward from the spraying device 12 in the absorption tower main body 21 , and is provided vertically downward from the exhaust gas derivation part 23 . The mist eliminator 14 removes moisture from the exhaust gas G when the exhaust gas G passes through the mist eliminator 14 .

The absorption tower main body 21 has a predetermined interval in the vertical direction, and the filling layer 13, the spraying device 12, and the mist eliminator 14 are arranged from below, so that the four space parts 21a, 21b, 21c, 21d) are partitioned. The first space portion 21a is partitioned between the filling layer 13 and the storage portion 25 , and the exhaust gas introduction portion 22 communicates with each other. The 2nd space part 21b is partitioned between the filling layer 13 and the dispersion|spreading apparatus 12. As shown in FIG. The 3rd space part 21c is partitioned between the dispersion|spreading apparatus 12 and the mist eliminator 14. As shown in FIG. The fourth space portion 21d is partitioned between the mist eliminator 14 and the exhaust gas derivation unit 23 , and communicates with the exhaust gas derivation unit 23 .

Seawater S is used as the cleaning liquid sprayed by the spraying device 12 . The spraying device 12 is connected to a seawater supply line L12 to which seawater is supplied as seawater S. The seawater supply line L12 is provided with a seawater supply pump 26 . Moreover, the storage part 25 is provided with the seawater discharge line L13 which discharges the stored seawater S and performs a purification process. The seawater discharge line L13 is provided with a seawater discharge pump 27 . In addition, in this embodiment, although the storage part 25 is provided in the lower part of the absorption tower body part 21, and the seawater discharge line L13 is provided in the storage part 25, the storage part 25 is provided. Alternatively, the seawater S may be directly discharged from the seawater discharge line L13 to the outside. Moreover, you may use again, after collect|recovering the seawater S stored in the storage part 25 to another storage tank, and adjusting water quality.

Accordingly, the exhaust gas G discharged from the diesel engine E passes through the exhaust gas line L11 and is guided to the exhaust gas introduction unit 22 . The exhaust gas G is introduced into the first space portion 21a of the exhaust gas flow passage 24 from the exhaust gas introduction portion 22 and ascends the exhaust gas flow passage 24 . When the spraying device 12 sprays the seawater S toward the filling layer 13 , the seawater S flows through the surface of the filling layer 13 . When the exhaust gas G ascending the exhaust gas flow path 24 passes through the packing layer 13, gas-liquid contact with the seawater S causes sulfur oxides contained in the exhaust gas G to be removed. When the exhaust gas G from which the sulfur oxide was removed rises further and passes through the mist eliminator 14, the water|moisture content in the exhaust gas G is removed. The exhaust gas G from which the sulfur oxides and moisture have been removed ascends the fourth space portion 21d and is discharged from the exhaust gas derivation portion 23 to the outside.

2 : is a top view which shows the seawater spraying apparatus, FIG. 3 : is a side view which shows the seawater spraying apparatus.

2 and 3 , the spraying device 12 includes a plurality of first pressurized watering nozzles 31 , a plurality of second pressure watering nozzles 32 , and a seawater supply pump 26 as a seawater supplying device. ) and a seawater supply line L12 (both see FIG. 1 ).

The absorption tower body portion 21 has a rectangular shape in a horizontal cross section, and is surrounded by a first inner wall surface 21e and a second inner wall surface 21f that face each other, and an exhaust gas flow path 24 is partitioned. The plurality of water spray pipes 33 are arranged along the first horizontal direction X parallel to the first inner wall surface 21e and in a second horizontal direction Y parallel to the second inner wall surface 21f. They are arranged in parallel with a predetermined interval. In this case, the water sprinkling pipes 33 disposed closest to the first inner wall surface 21e are disposed at an interval smaller than the interval with the other water sprinkling pipes 33 . The plurality of water spray pipes 33, each end in the first horizontal direction X, which is the longitudinal direction, is respectively supported on the second inner wall surface 21f, and one end passes through the absorption tower body 21 to the outside, A seawater supply line L12 (see FIG. 1 ) is connected.

In the plurality of water spray pipes 33 , a plurality of first pressurized water spray nozzles 31 are provided in a zigzag grid shape. That is, the adjacent water spray pipes 33 are arranged so that the first pressurized water spray nozzles 31 are not adjacent to each other in the second horizontal direction (Y). The plurality of first pressurized watering nozzles 31 serve as a circular spraying area A1 in that they pressurize and spray the seawater S so as to form a cone shape downward in the vertical direction. In this case, the plurality of first pressurized water spray nozzles 31 are directed toward the second space 21b in the exhaust gas flow passage 24, that is, the upper surface of the filling layer 13 (refer to FIG. 1 for both). S) is sprayed.

Further, in the plurality of water spray pipes 33 , a plurality of second pressure water spray nozzles 32 are provided between the plurality of first pressure water spray nozzles 31 in a zigzag grid shape. That is, the adjacent water spray pipes 33 are arranged so that the second pressure water spray nozzles 32 do not adjoin in the second horizontal direction Y. As shown in FIG. The plurality of second pressure watering nozzles 32 pressurize and spray seawater S so as to form a long elliptical cone shape in the second horizontal direction Y downward in the vertical direction, thereby forming an elliptical shape. It becomes the spreading area A2. In this case, the plurality of second pressurized water spray nozzles 32 are directed toward the second space 21b in the exhaust gas flow path 24, that is, the upper surface of the filling layer 13 (refer to FIG. 1 for both). S) is sprayed.

The plurality of first pressurized water spray nozzles 31 spray the seawater S to form a cone toward the filling layer 13 of the exhaust gas flow passage 24 , so that in the exhaust gas flow passage 24 , a plurality of The spraying areas Aa, Ab, and Ac in which the first pressurized watering nozzle 31 cannot spray the seawater S are generated. The spraying area Aa is an area between the respective spraying areas A1 in the plurality of first pressurized watering nozzles 31 . The spraying area Ab is an area between the spraying area A1 in the plurality of first pressurized watering nozzles 31 and the first inner wall surface 21e. The spraying area Ac is an area between the spraying area A1 in the plurality of first pressurized watering nozzles 31 and the second inner wall surface 21f.

Therefore, the plurality of second pressure watering nozzles 32 spray seawater S toward the spraying areas Aa, Ab, and Ac where the plurality of first pressure watering nozzles 31 cannot spray seawater S. do. Here, the plurality of second pressure watering nozzles 32 sprays seawater S toward the two spraying areas Aa, sprays the seawater S toward the two spraying areas Aa and Ab, or sprays one The seawater S is sprayed toward the area Ac. In addition, the plurality of second pressure watering nozzles 32 may spray seawater S toward the spraying areas Aa, Ab, Ac where the plurality of first pressure watering nozzles 31 cannot spray seawater S. What is necessary is just to be able to do it, and it is not limited to the spray form of such seawater (S).

In addition, the seawater supply pump 26 can supply seawater S to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 through the watering pipe 33 . Moreover, the seawater supply pump 26 can adjust the spraying areas A1 and A2 of the seawater S by the first pressurized watering nozzle 31 and the plurality of second pressured watering nozzles 32 .

As shown in FIG. 1, the exhaust gas G discharged|emitted from the diesel engine E is sent to the exhaust gas flow path 24 of the absorption tower 11 by the exhaust gas flow path 24 from the exhaust gas line L11. is introduced As for the output of the diesel engine E, the supply amount of the exhaust gas G introduce|transduced into the absorption tower 11 also fluctuates since the rotation speed fluctuates according to the load of a ship. The diesel engine E is provided with a load sensor 28 that detects a load (revolution speed), and a detection result is output to the control device 29 . The control device 29 controls the driving force (revolution speed) of the seawater supply pump 26 according to the load (rotation speed) of the diesel engine E . That is, when the load (revolution speed) of the diesel engine E rises and the discharge amount of the exhaust gas G increases, the driving force (revolution speed) of the seawater supply pump 26 is raised, and the spraying device 12 is Increase the supply amount of seawater (S) to be supplied. On the other hand, when the load (revolution speed) of the diesel engine E falls and the discharge amount of the exhaust gas G decreases, the driving force (revolution speed) of the seawater supply pump 26 is reduced, and the spraying device 12 is Reduce the supply amount of seawater (S) to be supplied.

That is, the control device 39 controls the seawater supply pump 26 according to the flow rate of the exhaust gas G flowing through the exhaust gas flow path 24 , and the plurality of first pressurized water spray nozzles through the water spray pipe 33 . (31) and the supply pressure of the seawater (S) supplied to the plurality of second pressure watering nozzles 32 and the supply amount per unit time are changed. When the supply pressure and the supply amount per unit time of the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 by the seawater supply pump 26 are changed, the first pressurization The spraying angle of the seawater S from the watering nozzle 31 and the second pressurizing watering nozzle 32 is changed, and the spraying areas A1 and A2 are changed.

Fig. 4 is a plan view showing the action of the seawater spraying device, and Fig. 5 is a side view showing the action of the seawater spraying device.

1, 2 and 3, when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is small, the control device 29 controls the seawater supply pump ( 26), the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressured watering nozzles 32 is lowered to reduce the supply amount. Then, the spray angle of the seawater S from the first pressurized watering nozzle 31 and the second pressured watering nozzle 32 is changed to become the spraying areas A1 and A2.

That is, the plurality of first pressurized watering nozzles 31 spray the seawater S so as to form a cone shape downward to form a spraying area A1 forming a plurality of circular shapes. Here, the spraying areas Aa, Ab, and Ac in which the plurality of first pressurized watering nozzles 31 cannot spray the seawater S are generated. The plurality of second pressurized water spray nozzles 32 spray the seawater S downward to form an elliptical cone shape, thereby becoming a spray area A2 forming an elliptical shape including the spray areas Aa, Ab, and Ac. Therefore, the plurality of first pressurized water spray nozzles 31 and the plurality of second pressure water spray nozzles 32 can spray seawater S over the entire area of the exhaust gas flow passage 24 . In addition, it is preferable that the pressurized water spray nozzles 31 and 32 spray the seawater S so that the spraying areas Aa, Ab, and Ac are completely eliminated, but the sprayed seawater S flows through the surface of the filling layer 13 . In this regard, the pressure watering nozzles 31 and 32 do not need to spray the seawater S so that the spraying areas Aa, Ab, and Ac are completely eliminated.

On the other hand, as shown in FIGS. 1, 4 and 5 , when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is large, the control device 29 is configured to supply seawater. The pump 26 is controlled, and the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 is increased to increase the supply amount. Then, the spraying angle of the seawater S from the 1st pressurized watering nozzle 31 and the 2nd pressurized watering nozzle 32 is changed, and it becomes the spraying areas A11, A12 wider than the spraying areas A1 and A2. Even in this case, the plurality of first pressurized water spray nozzles 31 and the plurality of second pressure water spray nozzles 32 can spray seawater S over the entire area of the exhaust gas flow path 24 .

In addition, the first pressurized watering nozzle 31 and the second pressured watering nozzle 32 have, for example, different spray holes of seawater S, so that the seawater S by the first pressurized watering nozzle 31 is different. ) is set to be larger than the amount of seawater S injected per unit time by the second pressurized watering nozzle 32 .

As described above, in the seawater desulfurization apparatus of the first embodiment, the exhaust gas inlet 22 and the exhaust gas outlet 23 of the exhaust gas G are provided, and the exhaust gas flow path 24 along the vertical direction is provided therein. An absorption tower 11 and a spraying device 12 for spraying seawater S as a washing liquid toward a vertical downward direction with respect to an exhaust gas G flowing upward through the exhaust gas flow path 24 in the vertical direction is provided. And, the spraying device 12 includes a plurality of first pressurized watering nozzles 31 that are parallel to the exhaust gas flow passage 24 in a horizontal direction to pressurize and spray seawater S, and a plurality of first pressurized watering nozzles ( A seawater supply pump 26 as a seawater supply device capable of supplying seawater S to 31 , and adjusting the spraying area of seawater S by the first pressurized watering nozzle 31 , and a plurality of first pressurized watering The nozzle 31 has a plurality of second pressurized water spray nozzles 32 that pressurize and spray the sea water S to a region of the exhaust gas flow path 24 where the sea water S cannot be sprayed.

For this reason, the plurality of first pressurized water spray nozzles 31 pressurize and spray seawater S to the exhaust gas flow passage 24 , and the plurality of second pressure water spray nozzles 32 provide the plurality of first pressurized water spray nozzles. Since the nozzle 31 pressurizes and sprays seawater to the area of the exhaust gas flow path 24 where the seawater S cannot be sprayed, the seawater supply pump 26 is connected to the plurality of first pressurized watering nozzles 31 . Even if seawater is supplied and the spraying area of the seawater S by the first pressurized watering nozzle 31 is adjusted, the seawater S can be sprayed to most of the area in the exhaust gas flow passage 24 . As a result, stabilization of the desulfurization process and high precision can be attained.

In the seawater desulfurization apparatus of the first embodiment, the seawater supply pump 26 adjusts the spraying area by changing the spraying angle of the seawater S by the first pressurized watering nozzle 31 . Therefore, the spraying area of the seawater S by the first pressurized watering nozzle 31 can be easily adjusted.

In the seawater desulfurization apparatus of the first embodiment, the seawater supply pump 26 changes the injection angle of the seawater S by changing the supply pressure of the seawater S supplied to the first pressurized water spray nozzle 31 . Therefore, the spraying area of the seawater S by the first pressurized watering nozzle 31 can be easily adjusted.

In the seawater desulfurization apparatus of the first embodiment, the seawater supply pump 26 supplies seawater S to the first pressurized water spray nozzle 31 according to the flow rate of the exhaust gas G flowing through the exhaust gas flow path 24 . change the supply pressure of Therefore, the amount of seawater S that is optimal for the flow rate of exhaust gas G can be sprayed from the first pressurized watering nozzle 31 .

In the seawater desulfurization apparatus of the first embodiment, the plurality of first pressure watering nozzles 31 spray the seawater S to form a cone, and the plurality of second pressure watering nozzles 32 have an elliptical cone shape. The seawater (S) is sprayed to achieve this. Therefore, the seawater S can be appropriately sprayed to the area where the first pressurized watering nozzle 31 cannot spray seawater.

In the seawater desulfurization apparatus of the first embodiment, the seawater supply pump 26 can supply seawater S to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 , The amount of seawater S sprayed by the first pressurized watering nozzle 31 is larger than the amount of seawater S sprayed by the plurality of second pressurized watering nozzles 32 . Therefore, the seawater S of the optimum amount can be sprayed without being excessive with respect to the exhaust gas G.

In the seawater desulfurization apparatus of 1st Embodiment, an internal combustion engine as an exhaust gas generating source is mounted on a ship, exhaust gas G discharged|emitted from an internal combustion engine is made to contact seawater S, and desulfurization is carried out. Therefore, since the seawater desulfurization device 10 is mounted on a ship and the exhaust gas G discharged from the internal combustion engine mounted on the ship is contacted with seawater S to desulfurize, the exhaust gas can be efficiently purified. have. In addition, even if a lift difference occurs due to agitation while the ship is sailing, the first pressurized water spray nozzle 31 and the plurality of second pressure water spray nozzles 32 pressurize and spray seawater S. In, by suppressing the fluctuation of the supply amount of seawater (S) with respect to the horizontal direction of the filling layer 13, it is possible to prevent the deterioration of the desulfurization performance.

[Second embodiment]

6 : is a top view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 2nd Embodiment, and FIG. 7 is a side view which shows the effect|action of the seawater spraying apparatus. In addition, the basic structure of 2nd Embodiment is the same as that of 1st Embodiment mentioned above, and it demonstrates using FIG. 1, The same code|symbol is attached|subjected to the member which has the same function as 1st Embodiment mentioned above, and detailed description is omit

In 2nd embodiment, as shown to FIG. 1 and FIG. 6, 12 A of spraying apparatuses are the some 1st pressurization water spray nozzle 31 and some 2nd pressurization water spray similarly to 1st Embodiment. It has the nozzle 32, the seawater supply pump 26 as a seawater supply apparatus, and the seawater supply line L12.

In the plurality of water spray pipes 33 , a plurality of first pressurized water spray nozzles 31 are provided in a grid shape. That is, the adjacent water spray pipes 33 are disposed such that the first pressure water spray nozzle 31 is adjacent to each other in the second horizontal direction Y. The plurality of first pressurized watering nozzles 31 serve as a circular spraying area A1 in that they pressurize and spray the seawater S so as to form a cone shape downward in the vertical direction. In this case, the plurality of first pressurized water spray nozzles 31 spray the seawater S toward the upper surface of the filling layer 13 .

In addition, in the plurality of water spray pipes 33 , a second pressure water spray nozzle 32 is provided between the plurality of first pressure water spray nozzles 31 . That is, the plurality of water spray pipes 33 are arranged side by side at predetermined intervals in the second horizontal direction Y, but the second pressure water spray nozzles 32 are spaced by one with respect to the plurality of water spray pipes 33 arranged side by side. is placed as The plurality of second pressure watering nozzles 32 pressurize and spray seawater S so as to form a long elliptical cone shape in the second horizontal direction Y downward in the vertical direction, thereby forming an elliptical shape. It becomes the spreading area A2. In this case, the plurality of second pressure watering nozzles 32 spray the seawater S toward the upper surface of the filling layer 13 .

The plurality of first pressurized water spray nozzles 31 spray the seawater S to form a cone toward the filling layer 13 of the exhaust gas flow passage 24 , so that in the exhaust gas flow passage 24 , a plurality of A spraying area Aa in which the first pressurized watering nozzle 31 cannot spray seawater S occurs. The spraying area Aa is an area between the respective spraying areas A1 in the plurality of first pressurized watering nozzles 31 .

Therefore, the plurality of second pressure watering nozzles 32 sprays seawater S toward the spraying area Aa where the plurality of first pressure watering nozzles 31 cannot spray seawater S. Here, the plurality of second pressurized water spray nozzles 32 spray the seawater S toward the two spray areas Aa. In addition, the plurality of second pressure watering nozzles 32 may spray seawater S toward the spraying area Aa where the plurality of first pressure watering nozzles 31 cannot spray seawater S. , is not limited to the spraying form of such seawater (S).

In addition, the seawater supply pump 26 can supply seawater S to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 through the watering pipe 33 . Moreover, the seawater supply pump 26 can adjust the spraying areas A1 and A2 of the seawater S by the first pressurized watering nozzle 31 and the plurality of second pressured watering nozzles 32 .

1 and 6 , when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is small, the control device 29 controls the seawater supply pump 26 . control, and lowers the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressured watering nozzles 32 to reduce the supply amount. Then, the spray angle of the seawater S from the first pressurized watering nozzle 31 and the second pressurized watering nozzle 32 is changed to become the spraying areas A1 and A2.

That is, the plurality of first pressurized watering nozzles 31 spray the seawater S so as to form a cone shape downward to form a spraying area A1 forming a plurality of circular shapes. Here, a spraying area Aa in which the plurality of first pressurized watering nozzles 31 cannot spray the seawater S is generated. The plurality of second pressurized watering nozzles 32 spray the seawater S downward to form an elliptical cone shape, thereby becoming a spraying area A2 having an elliptical shape including the spraying area Aa. Therefore, the plurality of first pressurized water spray nozzles 31 and the plurality of second pressure water spray nozzles 32 can spray seawater S over the entire area of the exhaust gas flow passage 24 .

On the other hand, as shown in FIGS. 1 and 7 , when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is large, the control device 29 controls the seawater supply pump 26 ) to increase the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 to increase the supply amount. Then, the spraying angle of the seawater S from the 1st pressurized watering nozzle 31 and the 2nd pressurized watering nozzle 32 is changed, and it becomes the spraying areas A11, A12 wider than the spraying areas A1 and A2. Even in this case, the plurality of first pressurized water spray nozzles 31 and the plurality of second pressure water spray nozzles 32 can spray seawater S over the entire area of the exhaust gas flow path 24 .

As described above, in the seawater desulfurization apparatus of the second embodiment, the number of the second pressure watering nozzles 32 is that the plurality of first pressurized watering nozzles 31 and the second pressured watering nozzles 32 are arranged in a grid shape. can be reduced to reduce costs.

[Third embodiment]

8 : is a top view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 3rd Embodiment, and FIG. 9 is a side view which shows the effect|action of the seawater spraying apparatus. In addition, the basic structure of 3rd Embodiment is the same as that of 1st Embodiment mentioned above, and it demonstrates using FIG. 1, The same code|symbol is attached|subjected to the member which has the same function as 1st Embodiment mentioned above, and detailed description is omit

In the third embodiment, as shown in FIGS. 1 and 8 , the spraying device 12B includes a plurality of first pressure watering nozzles 34 , a plurality of second pressure watering nozzles 35 , and a seawater supply device. It has a seawater supply pump 26 and a seawater supply line L12 as a.

The plurality of water spray pipes 36 and 37 are arranged along the first horizontal direction X parallel to the first inner wall surface 21e and the second horizontal direction Y parallel to the second inner wall surface 21f ) and arranged in parallel with a predetermined interval. In this case, the water sprinkling pipes 37 disposed closest to the first inner wall surface 21e are disposed at a narrower interval than the interval with the other water sprinkling pipes 36 . The plurality of water spray pipes 36 and 37 have their respective ends in the first horizontal direction X supported in the second inner wall surface 21f, one end passing through the absorption tower body 21 to the outside, respectively. Thus, the seawater supply line L12 (see FIG. 1) is connected.

In the plurality of water spray pipes 36 , a plurality of first pressure water spray nozzles 34 are provided in a grid shape. That is, the adjacent water spray pipes 36 are disposed such that the first pressure water spray nozzle 34 is adjacent to each other in the second horizontal direction Y. As shown in FIG. The plurality of first pressurized water spray nozzles 34 pressurize and spray seawater S so as to form a pyramid shape (in this embodiment, a square pyramid shape in this embodiment) downward in the vertical direction, thereby forming a quadrangular shape. It becomes the spreading area B1. In this case, the plurality of first pressurized water spray nozzles 34 spray the seawater S toward the upper surface of the filling layer 13 .

Further, in the plurality of water spray pipes 36 , second pressure water spray nozzles 35 are provided on the side of the second inner wall surface 21f of the plurality of first pressure water spray nozzles 34 . The plurality of water spray pipes 37 are provided with second pressure water spray nozzles 35 at predetermined intervals in the longitudinal direction. That is, the plurality of second pressurized water spray nozzles 35 are arranged along the first inner wall surface 21e and the second inner wall surface 21f of the absorption tower body 21 and along the horizontal direction. The second pressurized water spray nozzle 35 provided in the water spray pipe 36 pressurizes and sprays seawater S so as to form an elongated elliptical cone shape in the second horizontal direction Y downward in the vertical direction. , it becomes the spreading area B2 which forms an ellipse shape. In addition, the second pressurized watering nozzle 35 provided in the watering pipe 37 pressurizes and sprays seawater S so as to form an elongated elliptical cone shape in the first horizontal direction X downward in the vertical direction. At this point, it becomes the dispersion|distribution area|region B2 which makes an ellipse shape. In this case, the plurality of second pressure watering nozzles 35 spray the seawater S toward the upper surface of the filling layer 13 .

The plurality of first pressurized water spray nozzles 34 inject seawater S to form a quadrangular pyramid shape toward the filling layer 13 of the exhaust gas flow path 24 , so that in the exhaust gas flow path 24 , a plurality of The spraying areas Ba and Bb in which the 1st pressurized watering nozzle 34 cannot spray the seawater S generate|occur|produce. The spraying area Ba is an area between the first horizontal direction X in each of the spraying areas B1 in the plurality of first pressurized watering nozzles 34 . The spraying area Bb is a spraying area Bb between each of the spraying areas B1 in the plurality of first pressurized watering nozzles 34 and the first inner wall surface 21e and the second inner wall surface 21f.

Therefore, the plurality of second pressure watering nozzles 35 sprays seawater S toward the spraying area Bb where the plurality of first pressure watering nozzles 34 cannot spray seawater S. In addition, since the spraying areas B1 exist on both sides of the spraying area Ba where the plurality of first pressurized watering nozzles 34 cannot spray the seawater S, the seawater sprayed by the first pressured watering nozzles 34 is provided. (S) flows. Therefore, the second pressure watering nozzle 35 is not provided with respect to the spraying area Ba. However, as needed, you may provide the 2nd pressure watering spray nozzle 35 with respect to spraying area|region Ba. Moreover, since the 1st pressure watering nozzle 34 sprays seawater S so that it may form a quadrangular pyramid shape, and becomes a square-shaped spraying area|region B1, you may set the spraying area|region B1 so that the spraying area|region Ba may disappear.

Further, the seawater supply pump 26 can supply seawater S to the plurality of first pressurized watering nozzles 34 and the plurality of second pressurized watering nozzles 35 through the watering pipes 36 and 67 . In addition, the seawater supply pump 26 can adjust the spraying areas B1 and B2 of the seawater S by the first pressurized watering nozzle 34 and the plurality of second pressured watering nozzles 35 .

As shown in FIGS. 1 and 8 , when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is small, the control device 29 controls the seawater supply pump 26 . control, and lowers the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 34 and the plurality of second pressured watering nozzles 35 to reduce the supply amount. Then, the spraying angle of the seawater S from the first pressurized watering nozzle 34 and the second pressured watering nozzle 35 is changed to become the spraying areas B1 and B2.

That is, the plurality of first pressurized watering nozzles 34 spray the seawater S downward to form a quadrangular pyramid shape, thereby forming a plurality of circular spraying regions B1. Here, a spraying area Bb in which the plurality of first pressurized watering nozzles 34 cannot spray the seawater S is generated. The plurality of second pressurized water spray nozzles 35 spray the seawater S downward to form an elliptical cone shape, thereby becoming a spraying area B2 having an elliptical shape including the spraying area Bb. Therefore, the plurality of first pressurized water spray nozzles 34 and the plurality of second pressure water spray nozzles 35 can spray seawater S over the entire area of the exhaust gas flow path 24 .

On the other hand, as shown in FIGS. 1 and 9 , when the flow rate of the exhaust gas G introduced into the exhaust gas flow path 24 of the absorption tower 11 is large, the control device 29 controls the seawater supply pump 26 ) and increase the supply pressure of the seawater S supplied to the plurality of first pressurized watering nozzles 34 and the plurality of second pressurized watering nozzles 35 to increase the supply amount. Then, the spraying angle of the seawater S from the 1st pressurized watering nozzle 34 and the 2nd pressurized watering nozzle 35 is changed, and it becomes the spraying areas B11 and B12 wider than the spraying areas B1 and B2. Even in this case, the plurality of first pressurized water spray nozzles 34 and the plurality of second pressure water spray nozzles 35 can spray seawater S over the entire area of the exhaust gas flow path 24 .

As described above, in the seawater desulfurization apparatus of the third embodiment, the seawater S is sprayed from the plurality of first pressurized watering nozzles 34 to form a pyramid shape, and the elliptical cone shape is formed from the plurality of second pressured watering nozzles 35 . The seawater (S) is sprayed to achieve this. Therefore, the seawater S can be sprayed appropriately to the area|region where the 1st pressurized watering nozzle 34 cannot spray seawater.

In the seawater desulfurization apparatus of the third embodiment, the plurality of second pressurized water spray nozzles 35 are disposed along the inner wall surfaces 21e and 21f of the absorption tower body 21 and along the horizontal direction. Therefore, the seawater S injected from the first pressurized watering nozzle 34 is supplied to the central portion of the exhaust gas flow passage 24 , and the seawater S injected from the second pressurized watering nozzle 35 is exhausted. Since it is supplied to the outer peripheral part of the gas flow path 24, the seawater S can be spread|dispersed over the whole area of the exhaust gas flow path 24 efficiently.

[Fourth embodiment]

It is a side view which shows the seawater spraying apparatus in the seawater desulfurization apparatus of 4th Embodiment. In addition, the basic structure of 4th Embodiment is the same as that of 1st Embodiment mentioned above, It demonstrates using FIG. 1, The same code|symbol is attached|subjected to the member which has the same function as 1st Embodiment mentioned above, and detailed description is omit

In the fourth embodiment, as shown in FIG. 10 , the seawater desulfurization device 10 includes an absorption tower 11 , a spraying device 12 , a packed bed 13 , and a mist eliminator 14 . It is provided, and the rectification|straightening member 41 is arrange|positioned between the spreading|spreading apparatus 12 and the filling layer 13.

The rectifying member 41 has a rectangular shape with a predetermined thickness, and its outer periphery is supported on the inner wall surface of the absorption tower body 21 . The rectifying member 41 is arranged so that a predetermined gap is secured with respect to the upper surface portion of the filling layer 13 . In the rectifying member 41, a plurality of through holes 42 are formed along the vertical direction.

Therefore, the control device 29 controls the seawater supply pump 26 to supply the seawater S supplied to the plurality of first pressurized watering nozzles 31 and the plurality of second pressurized watering nozzles 32 . The pressure is adjusted, and the seawater S is sprayed from the first pressurized watering nozzle 31 and the second pressurized watering nozzle 32 toward the filling layer 13 side. The seawater S sprayed from the first pressure watering nozzle 31 and the second pressure watering nozzle 32 collides with the rectifying member 41 , passes through the plurality of through holes 42 , and the filling layer 13 . is supplied to At this time, when the seawater S passes through the plurality of through-holes 42 provided in the rectifying member 41 , it diffuses in a direction intersecting with the flow direction of the exhaust gas G, and with respect to the filling layer 13 , Seawater (S) is uniformly supplied. Therefore, the seawater S can be made to contact uniformly over the whole area of the exhaust gas flow path 24. As shown in FIG.

Thus, in the seawater desulfurization apparatus of 4th Embodiment, the filling layer 13 in which the filling material is laminated|stacked in the vertical direction facing the downward direction in the vertical direction in the spraying apparatus 12 is provided, and the spraying apparatus 12 and filling are provided. A rectifying member 41 having a plurality of through holes 42 formed between the layers 13 is disposed. Therefore, the seawater S sprayed from the spraying device 12 is uniformly diffused in the direction intersecting the exhaust gas flow path 24 by the rectifying member 41 and supplied to the filling layer 13, Seawater S can be efficiently sprayed over the entire gas flow path 24 .

Further, in the above-described embodiment, seawater is supplied to the first pressurized watering nozzle and the second pressurized watering nozzle from a common seawater supply device, but different seawater is supplied to the first pressurized watering nozzle and the second pressurized watering nozzle. You may comprise so that seawater may be supplied from an apparatus.

Moreover, although the above-mentioned embodiment demonstrated the case where the seawater desulfurization apparatus was mounted on a ship, a seawater desulfurization apparatus can also be used on land.

10 Seawater Desulfurization Unit
11 Absorption Tower
12, 12A, 12B spray device
13 filling layer
14 Mist Eliminator
21 Absorption tower body
21a first space part
21b second space
21c third space
21d first space
22 Exhaust gas inlet (inlet)
23 Exhaust gas outlet (outlet)
24 exhaust gas flow path
25 reservoir
26 sea water supply pump
27 seawater discharge pump
28 load sensor
29 control unit
31, 34 First pressurized water spray nozzle
32, 35 Second pressurized watering nozzle
33, 36, 37 water pipe
41 no commutation
42 through hole
L11 exhaust gas line
L12 Seawater Supply Line
L13 Seawater Discharge Line
A1, A2, A11, A12, B1, B2, B11, B12 spread area
Aa, Ab, Ac, Ba, Bb spread area
G exhaust gas
S sea water

Claims (11)

In the seawater desulfurization device for desulfurization by contacting the exhaust gas discharged from the exhaust gas generating source with seawater,
An absorption tower having an inlet and an outlet of the exhaust gas and having an exhaust gas flow path in a vertical direction therein;
and a spraying device for spraying seawater as a cleaning liquid toward a vertical downward direction with respect to an exhaust gas flowing upward in the vertical direction through the exhaust gas flow path;
The spraying device is
a plurality of first pressurized water spray nozzles that are parallel to the exhaust gas passage in a horizontal direction and pressurize and spray the seawater;
a seawater supply device capable of supplying the seawater to the plurality of first pressurized watering nozzles and capable of adjusting a spraying area of the seawater by the first pressurized watering nozzle;
The seawater desulfurization apparatus, characterized in that it has a plurality of second pressurized watering nozzles that pressurize and spray the seawater in a region of the exhaust gas flow path where the plurality of first pressurized watering nozzles cannot spray the seawater. The method according to claim 1,
The seawater supply device adjusts the spraying area by changing the spraying angle of the seawater by the first pressure spraying nozzle. 3. The method according to claim 2,
The seawater supply device is a seawater desulfurization device, characterized in that by changing the supply pressure of the seawater supplied to the first pressurized water spray nozzle to change the spray angle of the seawater. 4. The method according to claim 3,
The seawater supply device is a seawater desulfurization device, characterized in that it changes the supply pressure of the seawater supplied to the first pressurized watering nozzle according to the flow rate of the exhaust gas flowing through the exhaust gas flow path. 5. The method according to any one of claims 1 to 4,
The plurality of first pressure watering nozzles spray the seawater to form a cone shape, and the plurality of second pressure watering nozzles to spray the seawater to form an elliptical cone shape. 5. The method according to any one of claims 1 to 4,
The plurality of first pressure watering nozzles spray the seawater to form a pyramid shape, and the plurality of second pressure watering nozzles to spray the seawater to form an elliptical cone shape. 7. The method according to any one of claims 1 to 6,
The seawater supply device may supply the seawater to the plurality of first pressurized watering nozzles and the plurality of second pressurized watering nozzles, and the amount of seawater injected by the plurality of first pressurized watering nozzles may be A seawater desulfurization device, characterized in that the amount of the seawater injected by the second pressurized watering nozzle is larger than that of the seawater. 8. The method according to any one of claims 1 to 7,
The plurality of second pressure sprinkling nozzles are seawater desulfurization apparatus, characterized in that it is arranged along the inner wall surface of the absorption tower along the horizontal direction. 9. The method according to any one of claims 1 to 8,
A filling layer in which a filling material is stacked in a vertical direction is provided opposite to the vertical direction downward in the spraying device, and a rectifying member having a plurality of through holes formed between the spraying device and the filling layer is disposed. seawater desulfurization device. 10. The method according to any one of claims 1 to 9,
The exhaust gas generating source is an internal combustion engine mounted on a ship, and seawater desulfurization apparatus, characterized in that the exhaust gas discharged from the internal combustion engine is in contact with seawater to desulfurize. In the seawater desulfurization device for desulfurization by contacting the exhaust gas discharged from the exhaust gas generating source with seawater,
An absorption tower having an inlet and an outlet of the exhaust gas and having an exhaust gas flow path in a vertical direction therein;
a spraying device for spraying seawater as a cleaning liquid toward a vertical downward direction with respect to an exhaust gas flowing upward in the vertical direction through the exhaust gas flow path;
A filling layer in which a filling material is laminated in a vertical direction facing downward in the vertical direction in the spraying device;
A seawater desulfurization device comprising a rectifying member disposed between the spraying device and the filling layer and having a plurality of through holes formed therein.

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