CN211636022U - Washing tower for ship tail gas treatment - Google Patents

Abstract

The utility model discloses a scrubbing tower for ship tail gas handles, the novel nipple rectifier comprises a cylindrical shel, the upper portion of barrel is equipped with the upper cover, be equipped with clean flue gas export on the upper cover, the lower part of barrel is equipped with downward protrusion for coniform low head and is used for the support with barrel lifting a take the altitude, be equipped with washing wastewater outlet on the low head, the inside of barrel is equipped with the shower system, the shower system includes the shower main of bottom seal, locates shower main upper portion and the perpendicular liquid inlet nozzle stub that sprays that sets up with the shower main, it is equipped with the thick liquid entry to spray to be equipped with on the liquid inlet nozzle stub, the periphery of shower main is equipped with the spiral column plate, the bottom of spiral column plate has the certain distance to the bottom of low head, the utility model discloses compact structure, reasonable in design, the.

Description

Washing tower for ship tail gas treatment

Technical Field

The utility model belongs to the technical field of marine desulfurization technique and specifically relates to a scrubbing tower for ship tail gas treatment is related to.

Background

Exhaust gas from ships usually contains harmful gases and smoke, and if the exhaust gas is not properly treated and discharged directly, it pollutes the air. The International Maritime Organization (IMO) stipulates that from 2020 onwards, a new upper limit on sulfur oxide emissions of 0.5% will be in force worldwide. Among the schemes for reducing the discharge amount of sulfur oxides, the scheme of additionally installing a ship tail gas washing tower is the most common technical scheme. At present, most of the spraying washing towers are used for introducing waste gas discharged by a ship engine into the washing tower from the bottom of the washing tower, and a plurality of spraying pipe layers are uniformly distributed on the high space inside the washing tower. The flue gas vertically diffuses upwards in the washing tower and simultaneously contacts and reacts with liquid drops sprayed by the spray pipe layer, so that the desulfurization effect is achieved; meanwhile, the washed clean flue gas is discharged from the top of the washing tower, and the washing liquid is discharged from the bottom of the washing tower, but the technical scheme has the following problems: 1. a device for preventing the washing liquid from flowing backwards into the waste gas inlet and flowing backwards into the engine is required to be arranged; 2. the radial distribution of the waste gas in the tower body is uneven, and the desulfurization efficiency is affected; 3. waste gas carries out the interior back of tower from the bottom and follows the tower body and vertically upwards through spraying the layer washing back, directly discharges from top exhanst gas outlet, and flue gas dwell time is shorter in the tower, for reaching the desulfurization effect of ideal, needs to design great tower body diameter and higher tower body height, therefore occupies great hull space to tower body manufacturing cost has been improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a scrubbing tower that boats and ships tail gas was handled, compact structure, reasonable in design, the washing effect is good.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a washing tower for ship tail gas treatment comprises a cylinder body, wherein an upper seal head is arranged at the upper part of the cylinder body, a clean flue gas outlet is arranged on the upper seal head, a lower seal head which protrudes downwards and is in a conical shape and a support used for lifting the cylinder body to a certain height are arranged at the lower part of the cylinder body, a washing wastewater outlet is arranged on the lower seal head, a spraying pipe system is arranged inside the cylinder body, the spraying pipe system comprises a main spraying pipe with a sealed bottom, a spraying liquid inlet short pipe and a nozzle, the spraying liquid inlet short pipe is arranged at the upper part of the main spraying pipe and is vertical to the main spraying pipe, a spraying slurry inlet is arranged on the spraying liquid inlet short pipe, a spiral column plate is arranged at the periphery of the main spraying pipe, a certain distance is reserved from the bottom of the spiral column plate to the bottom of the lower seal head, and the periphery of the spiral column, the spraying main pipe is provided with a spraying pipe system arranged along the rotation direction of the flue, the tangential direction of the cylinder body is provided with a flue gas inlet, and the flue gas inlet corresponds to the bottom of the spiral tower plate.

And a demister is arranged at the upper part of the cylinder body and close to the clean flue gas outlet.

The lateral wall of barrel is equipped with a plurality of manholes, the manhole arranges from top to bottom in proper order.

The outside of barrel is equipped with a plurality of and draws the ear.

The lower end enclosure is a conical end enclosure with a half vertex angle of 60-80 degrees.

The spraying pipe system further comprises spraying branch pipes arranged on the spraying main pipe, the nozzles are located on the spraying branch pipes, and the spraying branch pipes are uniformly distributed below the spiral tower plate.

The spray nozzles are directly arranged on the side wall of the spray header.

The utility model has the advantages that: 1. the washing waste water outlet is positioned at the bottom of the cylinder, and the flue gas inlet is away from the bottom of the cylinder by a certain distance, so that waste water flows out from the washing waste water outlet, and a device for preventing washing liquid from flowing back into the engine from the waste gas inlet is not required to be additionally arranged; 2. waste gas upwards discharges along the spiral column plate, makes waste gas distribute evenly in the tower body, and waste gas fully contacts with the spray liquid, under the prerequisite of guaranteeing desulfurization effect, dwindles the required tower body space of realization desulfurization greatly, has reduced equipment size, has not only practiced thrift equipment manufacturing cost, has still reduced the shared hull space of installation scrubbing tower.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

3 FIG. 3 3 3 is 3 a 3 schematic 3 view 3 of 3 the 3 structure 3 of 3 section 3 A 3- 3 A 3 in 3 FIG. 3 1 3; 3

FIG. 4 is a schematic view of the assembly of the shower piping system and the spiral tower plate of the present invention;

FIG. 5 is a top view of the spray piping system and spiral tray assembly of the present invention;

FIG. 6 is a schematic view of a spiral tray of the present invention;

FIG. 7 is a schematic view of the shower system of the present invention;

FIG. 8 is a schematic view of the nozzle of the present invention;

FIG. 9 is a schematic view of the assembly of the spray piping system and the spiral tower plate according to another spray method of the present invention;

FIG. 10 is a top view of the spray piping and spiral tray assembly of another spray method of the present invention;

FIG. 11 is a schematic view of another spray system of the present invention;

fig. 12 is a schematic view of another embodiment of the present invention.

In the figure: 1. a support; 2. a lower end enclosure; 3. a barrel; 4. a demister; 5. an upper end enclosure; 6. pulling the lug; 7. fixing the pull lug; 8. a spiral tray; 9. a spray inlet flange; 10. a spray liquid inlet short pipe; 11. bending the pipe; 12. spraying branch pipes; 13. a spray branch pipe sealing plate; 14. a nozzle; 15. a main spray pipe; 16. a pipe cap; 17. a flue gas inlet; 18. a purified flue gas outlet; 19. a spraying slurry inlet; 20. a washing wastewater outlet; 21. a manhole.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 8, a washing tower for ship tail gas treatment comprises a lower end enclosure 2, a cylinder 3 and an upper end enclosure 5 which are welded in sequence, the outer part of the cylinder body 3 is provided with a plurality of pull lugs 6 and fixed pull lugs 7 which are respectively used for hoisting equipment and fixing pull supports after the equipment is installed in place, the lower seal head 2 is a conical seal head with a half vertex angle of 60-80 degrees, the conical angle is designed for quickly discharging washing wastewater at the bottom of the tower, the lower part of the lower end enclosure 2 is provided with a support 1 for supporting the cylinder 3, the support 1 is of a vertical structure, according to the size of the washing tower and the structure of the installation position of the ship body, the support 1 can be welded with the lower seal head 2 or the cylinder body 3, the center of the lower seal head 2 is provided with a washing liquid outlet 20, a plurality of manholes 21 are formed in the cylinder 3 and the upper end enclosure 5, and the manholes 21 are round so as to facilitate installation of equipment internals and maintenance of the equipment;

a spraying pipe system is arranged in the cylinder 3, as shown in fig. 7, the spraying pipe system is composed of a spraying liquid inlet short pipe 10, a 90-degree elbow 11, a spraying main pipe 15, a spraying branch pipe 12, a nozzle 14 and a pipe cap 16, one end of the spraying branch pipe 12, which is far away from the spraying main pipe 15, is sealed through a spraying branch pipe sealing plate 13, a spraying liquid inlet flange 9 is arranged at the position of the spraying liquid inlet short pipe 10, a spraying slurry inlet 19 is arranged on the spraying liquid inlet short pipe 10, the spraying pipe composed of the spraying liquid inlet short pipe 10, the 90-degree elbow 11 and the spraying main pipe 15 is introduced into the center of the tower body from the top side direction of the cylinder 3 and extends downwards along the central line to the lower part of a flue gas inlet 17 at the bottom of the tower body, a plurality of washing slurry nozzles 14 are arranged on the spraying; the device is characterized in that a spiral tower plate 8, the cylinder 3 and a spray header 15 are arranged in the cylinder 3 from a flue gas inlet 17 along the tower wall from bottom to top, the space in the tower forms a spiral upward flue gas channel, the flue gas inlet 17 is in a form of tangentially side-entering at the bottom of the cylinder 3, is circular in shape and is 1-1.5 m away from the tower bottom, and is matched with a liquid level switch and a control system at the tower bottom, so that washing liquid can be effectively prevented from flowing backwards into an engine, when the engine flue gas enters the tower body from the flue gas inlet 17, the engine flue gas immediately diffuses upwards along the spiral flue gas channel in the tower body, and simultaneously, the engine flue gas and washing slurry sprayed by the spiral channel fully generate a desulfurization reaction, and washing wastewater after the reaction is discharged into the tower bottom along; meanwhile, the reacted clean flue gas diffuses to the top of the tower along the spiral flue gas channel, most water mist particles are filtered by a demister 4 arranged at the upper part of the cylinder 3, and then the purified flue gas is discharged into the atmosphere from a clean flue gas outlet 18 at the top of the tower;

the parts in the washing tower contacting with the medium are made of duplex stainless steel or nickel-based alloy with good corrosion resistance under seawater and acid-base liquid at a certain high temperature.

As shown in fig. 3 to 11, the spraying pipe system of another spraying method of the present invention is different from the above-mentioned spraying pipe system in that the spraying pipe system is in a form without a branch spraying pipe 12, and a plurality of nozzles 14 are installed on a main spraying pipe 15 at certain intervals; the spray pipe system in the form is suitable for equipment with small smoke amount.

As shown in fig. 12, the structure of the support 1 can also be selected from the structure of an ear seat, a leg, a skirt and the like; the shape of the flue gas inlet 17 can be set to be square; manhole 21 may be provided as a square manhole.

According to different technological requirements of a washing system, the number of turns of the spiral tower plate, the number of spraying nozzles and the spraying angle can be correspondingly increased or decreased according to calculation; according to different control requirements of the washing system, instruments or sensor mounting ports of various parameters such as temperature, pressure, liquid level and the like can be added on the washing tower so as to meet various control requirements of the ship tail gas treatment system in the processes of regulation and operation.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. A scrubbing tower for marine exhaust treatment, comprising a drum (3), characterized in that: the upper part of the cylinder body (3) is provided with an upper seal head (5), the upper seal head (5) is provided with a clean flue gas outlet (18), the lower part of the cylinder body (3) is provided with a lower seal head (2) which protrudes downwards to form a cone shape and a support (1) used for lifting the cylinder body (3) to a certain height, the lower seal head (2) is provided with a washing wastewater outlet (20), the inside of the cylinder body (3) is provided with a spraying pipe system, the spraying pipe system comprises a spraying main pipe (15) with a sealed bottom, a spraying liquid inlet short pipe (10) which is arranged at the upper part of the spraying main pipe (15) and is vertical to the spraying main pipe (15), and a nozzle (14) used for spraying a detergent, the spraying liquid inlet short pipe (10) is provided with a spraying slurry inlet (19), the periphery of the spraying main pipe (15) is provided with a spiral column plate (8), and a certain distance is reserved, the outer periphery of the spiral tower plate (8) is attached to the inner wall of the cylinder body (3) so that a closed flue is formed among the spiral tower plate (8), the cylinder body (3) and the spraying main pipe (15), a spraying pipe system arranged along the rotation direction of the flue is arranged on the spraying main pipe (15), a flue gas inlet (17) is arranged in the tangential direction of the cylinder body (3), and the flue gas inlet (17) corresponds to the bottom of the spiral tower plate (8).

2. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: a demister (4) is arranged at the upper part of the cylinder body (3) and close to the purified flue gas outlet (18).

3. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: the lateral wall of barrel (3) is equipped with a plurality of manholes (21), manhole (21) arrange in proper order from top to bottom.

4. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: the outer part of the cylinder body (3) is provided with a plurality of pull lugs (6).

5. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: the lower end enclosure (2) is a conical end enclosure with a half vertex angle of 60-80 degrees.

6. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: the spraying pipe system also comprises spraying branch pipes (12) arranged on the spraying main pipe (15), the nozzles (14) are positioned on the spraying branch pipes (12), and the spraying branch pipes (12) are uniformly distributed below the spiral tower plate (8).

7. The scrubber tower for marine exhaust gas treatment according to claim 1, wherein: the spray nozzles (14) are directly arranged on the side wall of the spray header pipe (15).

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