CN216149300U

CN216149300U - Novel I-shaped washing tower

Info

Publication number: CN216149300U
Application number: CN202120327689.4U
Authority: CN
Inventors: 孙凯强; 贾淑洁; 曲盈盈; 王丽娟; 马俊; 吕岩; 嵇智勇; 张义明; 片成荣; 方芳; 杜欣
Original assignee: Dalian Shipbuilding Industry Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2022-04-01
Anticipated expiration: 2031-02-05

Abstract

A novel I-type washing tower comprises an I-type washing tower, wherein a main spraying layer, a water and gas collecting and distributing dual-purpose device, a cooling spraying layer and a cone structure are sequentially arranged in the washing tower from top to bottom, the main spraying layer is composed of a plurality of rows of main spraying pipes, and nozzles of the main spraying pipes are downward. The cooling spraying layer is a row of cooling spraying pipes with upward nozzles. The cone structure is provided with a totally-enclosed tower type gas distribution structure, an overflow pipe is welded below the gas distribution structure, a smoke exhaust pipe is sleeved in the overflow pipe, and the smoke exhaust pipe extends upwards into the gas distribution structure. The water and gas collecting and distributing device is provided with an upper water collecting layer and a lower water collecting layer, a collecting tray is arranged below the water collecting layers, the water collecting layers are composed of water collecting grooves, and the water collecting grooves in the upper water collecting layers and the water collecting grooves in the lower water collecting layers are arranged in a staggered mode. The invention has the characteristics of good gas fluidity, safe drainage and the like, is beneficial to improving the operation efficiency of the washing tower, reducing the construction and operation cost, and can effectively reduce the risk of corrosion of the bottom cone material and prolong the service life of the washing tower.

Description

Novel I-shaped washing tower

Technical Field

The invention relates to the field of marine washing towers, in particular to an I-shaped washing tower capable of improving the fluidity of smoke.

Background

The marine I-type washing tower has the characteristics of small diameter, convenience in ship installation, high applicability, good economy and the like, and is one of the main forms of the existing marine waste gas washing tower. However, the existing type I scrubber has limited its application to a greater extent on ships due to the series of problems. The following disadvantages mainly exist:

(1) because of the smaller diameter, the difficulty of arranging the filler structure in the washing tower is increased, and in order to improve the working effect of the washing tower, the spraying amount of the washing water needs to be increased, but the water drainage difficulty of the washing tower is increased at the same time. The traditional solution is that one or more conical cap structures are arranged at the bottom of a main spraying layer of the washing tower, but the conical cap structures have the problems of large gas resistance, uneven gas distribution and the like, so that on one hand, the pressure loss of the washing tower is improved, and on the other hand, the washing efficiency of the washing tower is also reduced.

(2) In traditional I type tower only will discharge fume the pipe and simply stretch into the tower, the flue gas is relatively poor in the flow uniformity of tower body lower part, and then needs to increase the tower body height, guarantees to have enough highly to make the gas flow even. This increases both the bulk flow resistance within the tower and the construction cost of the scrubber tower.

(3) Traditional I type tower is not equipped with overflow arrangement in the bottom, and only the bottom sets up level sensor and prevents that ponding from getting into to discharge fume in the pipe, nevertheless in case trigger the shutdown protection, must influence entire system's effective operation, has increased crewman's maintenance work intensity and boats and ships risk of violating the contract.

(4) Because traditional I type tower washing efficiency is lower, can only increase the volume of spraying of washing water in a large number for satisfying the emission demand, and then can lead to the sea water pump discharge capacity to increase, and the system energy consumption increases, influences entire system's purchase and running cost.

(5) The traditional I-shaped tower cooling spraying is countercurrent spraying, and on one hand, the countercurrent spraying increases the risk that washing water is sprayed to the surface of a conical cap and even enters a smoke pipe; on the other hand, a large temperature difference is formed between the inner side and the outer side of the bottom cone, which brings challenges to the material corrosion prevention and the structural design of the bottom cone cap structure.

Therefore, a novel marine type I washing tower needs to be invented. Through improving inner structure, when improving inside air current mobility, can effectively prevent all kinds of operational risks that ponding leads to, improve the operating efficiency of system.

Disclosure of Invention

In order to solve the problems, the invention provides a novel I-type washing tower, aiming at achieving the purposes of improving the fluidity of flue gas flow inside the washing tower and preventing various operation risks caused by water accumulation, and the adopted technical scheme is as follows:

a novel I-shaped washing tower comprises an I-shaped washing tower body, wherein an air inlet is formed in the bottom of the washing tower body, an air outlet is formed in the top of the washing tower body, a main spraying layer, a water and gas collecting and distributing dual-purpose device, a cooling spraying layer and a cone structure are sequentially arranged in the washing tower body from top to bottom, the main spraying layer is provided with a plurality of rows of main spraying pipes, the main spraying pipes are parallel to one another and fixed on the inner wall of the washing tower body, and nozzles of the main spraying pipes face downwards; the water and gas collecting and distributing device is provided with an upper water collecting layer and a lower water collecting layer, a collecting tray is arranged below the water collecting layers, the water collecting layers are composed of water collecting grooves, and the water collecting grooves in the upper water collecting layers and the water collecting grooves in the lower water collecting layers are arranged in a staggered mode. The water collecting layer collects the washing water (the existing washing water generally adopts seawater) sprayed from the main spraying layer, and the washing water is introduced into the confluence disc. The cooling spraying layer is a row of cooling spraying pipes, and the nozzles of the cooling spraying pipes are upward; the cone structure is provided with a fully-closed tower-shaped gas distribution structure, the whole gas distribution structure is tower-shaped, an overflow pipe is welded below the gas distribution structure, a smoke exhaust pipe is sleeved in the overflow pipe, and the smoke exhaust pipe extends upwards into the gas distribution structure. The flue gas enters the tower through the gas inlet, flows to the upper layer of the washing tower through the smoke exhaust pipe and flows out from the gas outlet.

The gas distribution structure is provided with three gas distribution layers, each gas distribution layer is provided with a conical top and a circular side wall, and the side walls are porous plates. The smoke enters the gas distribution structure through the smoke exhaust pipe and flows out through holes in the porous plate.

The overflow pipe top circumference is opened there is the overflow mouth, and the overflow pipe still is connected with the drain pipe. The overflow pipe plays the effect of discharge inlet port department ponding, and the overflow mouth combines together with the drain pipe for the speed of discharge inlet port department ponding.

The confluence disc is connected with a water outlet, and the water outlet extends out of the tower from the side wall of the tower body. And draining the washing water collected in the confluence disc to the outside of the tower through a water outlet.

The cone structure is covered at the air inlet, and the smoke exhaust pipe is contacted with the air inlet. The flue gas enters the tower through the gas inlet, enters the gas distribution structure through the smoke exhaust pipe, and then flows to the upper part of the tower after floating outwards through the gas distribution structure.

The overflow pipe is sleeved outside the smoke exhaust pipe in a suspension manner and is connected with the smoke exhaust pipe through an annular plate in a welding manner.

The invention has the characteristics of good gas fluidity, safe drainage and the like, is beneficial to improving the operation efficiency of the washing tower, reducing the construction and operation cost, and can effectively reduce the risk of corrosion of the bottom cone material and prolong the service life of the washing tower.

Drawings

FIG. 1 is a schematic diagram of a type I scrub column of the present invention;

FIG. 2 is a schematic structural diagram of the water-collecting and air-distributing device of the present invention;

FIG. 3 is a schematic structural view of the pyramidal structure of the present invention;

wherein: 1-cone structure, 2-water and gas collecting and distributing device, 3-cooling spray layer, 4-main spray layer, 5-water outlet, 6-gas inlet, 7-gas outlet, 8-overflow pipe, 9-smoke exhaust pipe, 10-overflow port, 11-gas distributing structure, 12-water outlet pipe, 13-water collecting layer and 14-confluence disc.

Detailed Description

The invention is further explained by combining the attached drawings, and the novel I-shaped washing tower shown in the figure 1 is provided with a washing tower body, wherein the top of the washing tower is provided with an air outlet 7, the bottom of the washing tower is provided with an air inlet 6, and the air outlet is communicated with the air inlet. Inside the washing tower, a main spraying layer 4, a water and gas collecting and distributing dual-purpose device 2, a cooling spraying layer 3 and a cone structure 1 are sequentially arranged from top to bottom.

The main spraying layer is composed of 4 rows of main spraying pipes, each row of main spraying pipes are parallel to each other and fixed on the inner wall of the tower, nozzles of the main spraying pipes are downward, the main spraying pipes spray washing water (seawater) into the tower to wash flue gas entering the tower, and a large amount of washing water falls to the water and gas collecting and distributing dual-purpose device.

As shown in figure 2, the water and gas collecting and distributing device is provided with a double-layer water collecting layer 13, a circular confluence disc 14 is arranged below the double-layer water collecting layer, and a water outlet 5 extending out of the tower is arranged in the confluence disc. The water collecting layer is wholly circular and consists of 8 fan-shaped water collecting grooves, and the collected washing water is introduced into the confluence disc by the water collecting grooves and is discharged out of the tower through the water outlet. The water collecting tank summit collects the centre of a circle that forms the water collecting layer, and the water collecting tank that upper strata water collecting layer had and the water collecting tank dislocation set that lower floor water collecting layer had, this kind of dislocation structure makes the water collecting layer leave sufficient flue gas flow space from the centre of a circle to the excircle, guarantees the flue gas homogeneity that flows, avoids the flue gas to form the negative pressure at the center of collection water gas distribution dual-purpose device.

The cooling spray layer is a cooling spray pipe with a row of nozzles arranged upwards, the cooling spray pipe plays a role in cooling the cone structure, and the nozzles of the cooling spray pipe are arranged upwards and consistent with the flowing direction of flue gas, so that the flue gas is pushed to flow upwards while the temperature difference inside and outside the cone structure at the bottom is effectively improved, and the flowing resistance of the flue gas is reduced.

As shown in figure 3, the bottom cone structure is provided with an integral tower-shaped air distribution structure which is closed and is provided with three air distribution layers, each air distribution layer is provided with a conical top and a circular side wall, and the side wall is made of a porous plate. The gas distribution structure plays the roles of shielding washing water and uniformly discharging smoke, and the washing water is prevented from flowing into the smoke discharge pipe 9. The bottom of the gas distribution structure is welded with an overflow pipe 8, a smoke exhaust pipe is sleeved in the overflow pipe, and the overflow pipe is sleeved outside the smoke exhaust pipe in a suspended mode and is welded with the smoke exhaust pipe into a whole through an annular plate. The bottom of the smoke exhaust pipe is communicated with the air inlet, the top of the smoke exhaust pipe extends upwards into the air distribution structure 11, and then smoke entering the tower through the air inlet is introduced into the air distribution structure and flows out from holes in the side wall of the air distribution structure. The whole gas distribution structure is in a tower shape and is provided with three gas distribution layers, so that the gas distribution area of the flue gas is increased, the flue gas flows more uniformly in the gas distribution structure, and the smoke exhaust back pressure is reduced. The circumference of the top of the overflow pipe is provided with a circle of overflow ports 10, the overflow pipe is communicated with one end of a drain pipe, and the other end of the drain pipe 12 is communicated with a drain pipe system. The overflow pipe is used for preventing accumulated water around the air inlet from flowing back into the smoke exhaust pipe. Through the combination of the overflow port and the drain pipe, the drainage speed of accumulated water around the air inlet can be increased.

When the I-type washing tower is used, flue gas enters the cone structure through the gas inlet, drifts out through holes in the side wall of the gas distribution structure, is pushed upwards by the cooling spray pipe, passes through the space of the water and gas collecting and distributing dual-purpose device, and drifts out through the gas outlet after being washed by washing water. The water and gas collecting and distributing dual-purpose device disclosed by the invention is combined with the cooling spray pipe and the cone structure, so that the uniform fluidity of the flue gas can be effectively improved, and the pressure drop in the tower is reduced by 200 and 300 pa.

Claims

1. The utility model provides a novel I type scrubbing tower, has the scrubbing tower body of I type, and the tower bottom is provided with air inlet (6), and open at the tower top has gas outlet (7), its characterized in that: the main spraying layer (4), the water and gas collecting and distributing dual-purpose device (2), the cooling spraying layer (3) and the cone structure (1) are sequentially arranged in the washing tower body from top to bottom, the main spraying layer is provided with a plurality of rows of main spraying pipes, the main spraying pipes are parallel to each other and fixed on the inner wall of the washing tower body, and nozzles of the main spraying pipes are downward; the cooling spraying layer is a row of cooling spraying pipes, and the nozzles of the cooling spraying pipes are upward; the cone structure is provided with a fully-closed tower-shaped gas distribution structure (11), an overflow pipe (8) is welded below the gas distribution structure, a smoke exhaust pipe (9) is sleeved in the overflow pipe, and the smoke exhaust pipe extends upwards into the gas distribution structure; the water and gas collecting and distributing device is provided with an upper water collecting layer and a lower water collecting layer (13), a collecting tray (14) is arranged below the water collecting layers, each water collecting layer is composed of water collecting grooves, and the water collecting grooves on the upper water collecting layer and the water collecting grooves on the lower water collecting layer are arranged in a staggered mode.

2. A novel type I scrub column according to claim 1 wherein: the gas distribution structure is provided with three gas distribution layers, each gas distribution layer is provided with a conical top and a circular side wall, and the side walls are porous plates.

3. A novel type I scrub column according to claim 1 wherein: the top of the overflow pipe is circumferentially provided with an overflow port (10), and the overflow pipe is also connected with a drain pipe (12).

4. A novel type I scrub column according to claim 1 wherein: the confluence disc is connected with a water outlet (5) which extends out of the tower from the side wall of the tower body.

5. A novel type I scrub column according to claim 1 wherein: the cone structure is covered at the air inlet, and the smoke exhaust pipe is contacted with the air inlet.

6. A novel type I scrub column according to claim 1 wherein: the overflow pipe is sleeved outside the smoke exhaust pipe in a suspension manner and is connected with the smoke exhaust pipe through an annular plate in a welding manner.