CN211025777U - Ship tail gas treatment purifying tower - Google Patents

Abstract

The utility model relates to an environmental protection equipment technical field specifically discloses a boats and ships tail gas treatment purifying tower, including letting in the inside intake pipe of purifying tower, the desulfurization layer of setting in the bottom of purifying tower, set up at the denitration layer at the purifying tower middle part and set up at the outside a plurality of gas vents of purifying tower top and intercommunication purifying tower, the desulfurization layer includes the reaction tank of splendid attire calcium carbonate reaction liquid, the denitration layer includes that the reaction of bearing sodium hydroxide holds in the palm, the intake pipe is including setting up the air inlet in the purifying tower outside, and set up inside and a plurality of gas outlets that let in the desulfurization layer at the purifying tower, the gas outlet is less than the liquid level of calcium carbonate reaction liquid. The utility model discloses a boats and ships tail gas treatment purifying tower desulfurization, denitration, dust removal effect are good, the structure is retrencied, the reactant high-usage.

Description

Ship tail gas treatment purifying tower

Technical Field

The utility model relates to an environmental protection equipment technical field especially relates to a boats and ships tail gas treatment purifying column.

Background

The marine exhaust gas treatment purifying tower of prior art, device middle part are provided with desulfurization layer and denitration layer, and wherein the desulfurization layer generally comprises the reaction liquid layer, sets up the air inlet at the device lower extreme, lets in the inside desulfurization layer of device and denitration layer when the tail gas through the air inlet after, from the gas vent discharge desulfurization at device top, denitration treatment's tail gas. But for the pipe diameter of device holding chamber, the aperture of air inlet is less, makes the tail gas that gets into and the reaction liquid contact on desulfurization layer insufficient, and the drill way of air inlet is up moreover, and the reaction liquid on desulfurization layer flows backward the air inlet easily.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a boats and ships tail gas treatment purifying tower, its SOx/NOx control dust removal effect is good, the structure is retrencied, the reactant utilization rate is high.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

the embodiment of the utility model provides a marine exhaust handles purifying tower, including letting in inside intake pipe, the setting of purifying tower are in the desulfurization layer, the setting of purifying tower bottom are in the denitration layer and the setting at purifying tower middle part are in purifying tower top and intercommunication a plurality of gas vents of purifying tower outside, the desulfurization layer includes the reaction tank of splendid attire calcium carbonate reaction liquid, the denitration layer holds in the palm including the reaction of bearing sodium hydroxide, the intake pipe is including setting up the outside air inlet of purifying tower, and set up inside and letting in of purifying tower a plurality of gas outlets on desulfurization layer, the gas outlet is less than the liquid level of calcium carbonate reaction liquid.

As a preferable scheme of the marine tail gas treatment and purification tower, the desulfurization layer further comprises a spray layer arranged between the reaction tank and the reaction support, and the spray layer is provided with a plurality of spray heads for spraying the calcium carbonate reaction solution.

As a preferred scheme of the ship tail gas treatment purification tower, a supplement tank for containing the calcium carbonate reaction liquid is arranged outside the purification tower, a supplement port is arranged in the supplement tank, the spray layer is connected with the supplement tank through an extraction mechanism, and the reaction tank is communicated with the supplement tank.

As a preferable scheme of the ship tail gas treatment and purification tower, a defogging layer is arranged between the spray head and between the spray head and the inner wall of the purification tower.

As a preferred scheme of the ship tail gas treatment purification tower, the reaction support is provided with a conveying belt for circular transmission, and a material adding opening for adding sodium hydroxide, which can be opened and closed, is arranged above the denitration layer and on the side wall of the purification tower.

As a preferable scheme of the ship tail gas treatment and purification tower, the conveyor belt is driven by a driving motor and/or a rocker-gear mechanism.

As a preferable mode of the marine exhaust gas treatment purification tower, the conveyor belt is inclined downwards along the conveying direction of the sodium hydroxide.

As a preferred scheme of the ship tail gas treatment and purification tower, a waste collecting tank is arranged at the bottom of the purification tower, which is opposite to the lowest end of the conveyor belt, and the waste collecting tank and the reaction tank are separated by a partition plate.

As a preferable scheme of the ship tail gas treatment and purification tower, the waste collection tank is communicated with the side wall of the bottom of the purification tower through a waste collection pipe, and the height of the partition plate is lower than the highest height of a liquid level which can be accommodated by the air inlet pipe.

As a preferable scheme of the ship tail gas treatment and purification tower, a filtering layer wrapping sodium hydroxide is arranged in the exhaust port.

The utility model discloses beneficial effect does:

through setting up the tail gas treatment purifying tower on boats and ships, set up the desulfurization layer and the denitration layer that stack in the purifying tower inside, wherein, the desulfurization layer includes the reaction tank of splendid attire calcium carbonate reaction liquid, the denitration layer includes the reaction support of bearing sodium hydroxide, in addition also set up the intake pipe that lets in to the purifying tower inside, and set up at the purifying tower top and from the inside outside exhaust vent that leads to of purifying tower, and the air inlet of intake pipe sets up outside the tower, and the gas outlet sets up in the tower and lets in the desulfurization layer, and the gas outlet is less than the liquid level of calcium carbonate reaction liquid, make the gas outlet soak in calcium carbonate reaction liquid and can not flow in calcium carbonate reaction liquid, when letting in tail gas to the air inlet of intake pipe, tail gas can be in the direct contact calcium carbonate reaction liquid of gas outlet department and detach the sulphur composition and the dust that contain in the tail gas, the tail gas after desulfurization, the dust removal again with the reaction holds in, and then the tail gas after desulfurization, denitration and dust removal treatment is discharged from an exhaust port at the top of the purification tower. Therefore, the utility model discloses marine exhaust handles purifying tower desulfurization, denitration, dust removal effect are good, the structure is retrencied, the reactant high-usage.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a sectional view of a ship tail gas treatment and purification tower according to an embodiment of the present invention.

Fig. 2 is a sectional view of a marine exhaust gas treatment tower according to another embodiment of the present invention.

In the figure:

1. an air inlet pipe; 11. an air inlet; 12. an air outlet; 2. a desulfurization layer; 21. a reaction tank; 22. spraying a mist layer; 221. a spray head; 222. a demisting layer; 23. a replenishing pool; 231. a material supplementing port; 232. a drawing mechanism; 24. a waste collection tank; 25. a partition plate; 26. a waste collection pipe; 3. a denitration layer; 31. carrying out reaction; 311. a conveyor belt; 312. a drive motor; 313. "rocker-gear mechanism"; 32. a material adding port; 4. an exhaust port; 41. a filter layer.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, the embodiment of the utility model provides a ship tail gas treatment purifying tower, including letting in the inside intake pipe 1 of purifying tower, the desulfurization layer 2 of setting in the bottom of purifying tower, set up at the denitration layer 3 of purifying tower middle part and set up at the outside a plurality of gas vents 4 of purifying tower top and intercommunication purifying tower, the desulfurization layer 2 includes the reaction tank 21 of splendid attire calcium carbonate reaction liquid, denitration layer 3 includes the reaction support 31 of bearing sodium hydroxide, intake pipe 1 is including setting up at the outside air inlet 11 of purifying tower, and set up inside the purifying tower and let in a plurality of gas outlets 12 of desulfurization layer 2, gas outlet 12 is less than the liquid level of calcium carbonate reaction liquid.

In the embodiment, a tail gas treatment purification tower is arranged on a ship, a desulfurization layer 2 and a denitration layer 3 which are stacked are arranged inside the purification tower, wherein the desulfurization layer 2 comprises a reaction tank 21 for containing calcium carbonate reaction liquid, the denitration layer 3 comprises a reaction support 31 for supporting sodium hydroxide, an air inlet pipe 1 which is communicated into the purification tower is also arranged at the top of the purification tower, and an air outlet 4 which is arranged at the top of the purification tower and communicated with the outside from the inside of the purification tower is arranged, an air inlet 11 of the air inlet pipe 1 is arranged outside the tower, an air outlet 12 is arranged in the tower and communicated with the desulfurization layer 2, the air outlet 12 is lower than the liquid level of the calcium carbonate reaction liquid, so that the air outlet 12 can be soaked in the calcium carbonate reaction liquid and can not flow into the calcium carbonate reaction liquid, when tail gas is communicated to the air inlet 11 of the air inlet pipe 1, the tail gas can be in direct, the desulfurized and dedusted exhaust gas is reacted with sodium hydroxide in the reaction tray 31 to remove nitrate components contained in the exhaust gas, and the desulfurized and denitrated exhaust gas is discharged from the exhaust port 4 at the top of the purification tower. The marine exhaust treatment purifying tower of this embodiment desulfurization, denitration, dust removal effect are good, the structure is retrencied, the reactant high-usage.

In a preferred embodiment, referring to fig. 1, the gas outlet 12 may be aligned with the bottom of the reaction tank 21, so that the introduced tail gas can stay in the calcium carbonate reaction solution for a longer time, thereby enhancing the desulfurization effect.

In order to further desulfurize the tail gas in the desulfurization layer 2, in an embodiment, referring to fig. 1, the desulfurization layer 2 may further include a spray layer 22 disposed between the reaction tank 21 and the reaction tray 31, the spray layer 22 is provided with a plurality of spray nozzles 221 for spraying a calcium carbonate reaction solution, so as to avoid a problem that the tail gas with a large gas flow rate may have insufficient reaction time due to an excessively large tail gas flow velocity when passing through the reaction tank 21, and increase the content of calcium carbonate particles in the air in the desulfurization layer 2 and increase the contact area between the tail gas and the calcium carbonate reaction solution through the spray nozzles 221, thereby increasing the desulfurization rate of the tail gas.

In another embodiment, referring to fig. 1, a supplement tank 23 for containing a calcium carbonate reaction liquid may be disposed outside the purification tower, and a supplement port 231 may be disposed in the supplement tank 23 for pouring calcium carbonate, water, etc. to prepare the calcium carbonate reaction liquid, or directly pour the prepared calcium carbonate reaction liquid, in this embodiment, the spray layer 22 is connected to the supplement tank 23 through an extraction mechanism 232, so that the spray layer 22 can extract the calcium carbonate reaction liquid from the supplement tank 23 through the extraction mechanism 232 to be sprayed at the spray head 221, and meanwhile, the reaction tank 21 is further communicated with the supplement tank 23, on one hand, the calcium carbonate reaction liquid sprayed by the spray head 221 can be supplemented into the reaction tank 21 through pouring the calcium carbonate reaction liquid into the supplement tank 23, and on the other hand, the calcium carbonate reaction liquid can be collected by the reaction tank 21 to flow back into the supplement tank 23, thereby improving the recycling rate of the reactants.

In a preferred embodiment, referring to fig. 1, a defogging layer 222 may be disposed between the spray nozzle 221 and the spray nozzle 221, and between the spray nozzle 221 and the inner wall of the purification tower, and the defogging layer 222 may ensure that the tail gas can penetrate through to reach the denitration layer 3 and simultaneously absorb moisture in the tail gas. The defogging layer 222 of this embodiment may be a wire mesh defogger, or may be a baffle demister, wherein the wire mesh defogger may entrain fine liquid droplets in a gas phase, when tail gas with droplets passes through a wire mesh of the wire mesh defogger, the droplets contact the defogging wire mesh, are adhered or adsorbed, and repeatedly adsorb the droplets, so that the tiny droplets agglomerate and coalesce into large droplets, and the droplets move downward along intersections between woven wire mesh and wires under the action of gravity while continuing to adsorb the droplets entrained in the gas, and the large droplets flow to the bottom of the wire mesh defogger to fall down by the gravity of the droplets, which may also have an effect of recovering the droplets in the tail gas; the wave plate is arranged in the baffle plate demister, when tail gas containing mist is introduced, the mist collides with the wave plate and is attached to the surface of the wave plate due to the inertial impact action of gas, at the moment, the mist on the surface of the wave plate is diffused and the gravity of the mist is settled to enable the mist to form larger liquid drops and move forwards to the turning position of the wave plate along with the gas flow, the liquid drops are larger and larger due to the turning centrifugal force and the friction action and the adsorption action of the turning centrifugal force and the wave plate and the surface tension of the liquid, and the liquid drops are separated from the surface of the wave plate until the gravity of the collected liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid. The choice of the defogging layer 222 in this embodiment depends on the actual application scenario, and this embodiment is not particularly limited.

In order to make the denitration layer 3 also realize the operation of adding reactants, in an embodiment, referring to fig. 1, a circularly transferring conveyor belt 311 may be disposed on the reaction tray 31, a material adding port 32 which can be opened and closed and is used for adding sodium hydroxide is disposed above the denitration layer 3 and on the side wall of the purification tower, when the content of sodium hydroxide in the denitration layer 3 is reduced due to reaction consumption, sodium hydroxide may be added at the material adding port 32, and meanwhile, due to the existence of the circularly transferring conveyor belt 311, the added sodium hydroxide may be transferred by the conveyor belt 311 to fully cover the reaction tray 31, so as to ensure the sufficiency of sodium hydroxide, and further ensure the denitration rate of the tail gas.

Further, in one embodiment, referring to fig. 1 and 2, the conveyor 311 may be driven by a driving motor 312, or a "rocker-gear mechanism" 313, or a driving motor 312 and a "rocker-gear mechanism" 313, wherein the driving motor 312 may be connected to the drawing mechanism 232, sharing a set of control system and power system, for facilitating automatic control; and the "rocker-gear mechanism" 313 may be a combination of a rocker and two bevel gears to effect a change in drive direction. The automatic feeding device is driven by the driving motor 312, so that semi-automatic or even full-automatic material feeding can be realized, and the rotation speed and the rotation time of the driving motor 312 can be accurately controlled, so that the uniformity of the added sodium hydroxide can be ensured; when the rocker-gear mechanism 313 is used for driving, the energy consumption can be saved, and the transmission can be realized under the condition of no power supply; by combining the two power driving modes, the advantages and the disadvantages of the two power driving modes can be combined. The power driving mode of the conveyor belt 311 may be determined according to the use requirement of the application scenario, and this embodiment is not particularly limited.

In another embodiment, referring to fig. 1, the conveyor belt 311 may be inclined downward along the conveying direction of the sodium hydroxide, and may utilize the gravity and inertia to facilitate the spreading and transferring of the sodium hydroxide on the conveyor belt 311, and at the same time, the sodium hydroxide reacts with the nitrate component of the tail gas to generate a plurality of reaction wastes, and the inclined surface of the conveyor belt 311 weakens the friction between the conveyor belt 311 and the reaction wastes, so that the reaction wastes may rapidly drop when reaching the lowest end of the conveyor belt 311.

Further, in order to recycle the reaction waste, in one embodiment, referring to fig. 1, a waste collection tank 24 may be provided at the bottom of the purification tower opposite to the lowermost end of the conveyor 311, the waste collection tank 24 may collect the reaction waste dropped from the conveyor 311, and the waste collection tank 24 and the reaction tank 21 may be separated by a partition 25 to distinguish different function tanks.

Furthermore, in order to ensure that the collected reaction waste in the waste collection tank 24 is treated in time and the air inlet pipe 1 is not back-flowed by the calcium carbonate reaction liquid, in an embodiment, referring to fig. 1, the side wall of the bottom of the waste collection tank 24 and the purification tower is communicated through the waste collection pipe 26, the collected reaction waste is timely discharged and treated by the waste collection pipe 26, meanwhile, the height of the partition plate 25 can be set to be lower than the highest height of the liquid level that the air inlet pipe 1 can accommodate, so that the excessive calcium carbonate reaction liquid can flow out of the waste collection tank 24 through the partition plate 25 and then be discharged from the waste collection pipe 26, and back-flow into the air inlet pipe 1 is avoided.

In another embodiment, referring to fig. 1, a filter layer 41 for wrapping sodium hydroxide may be further disposed in the exhaust port 4 to perform further denitration treatment on the exhaust gas to be exhausted.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. The utility model provides a marine exhaust handles purifying column, its characterized in that, is including letting in inside intake pipe, the setting of purifying column are in the desulfurization layer, the setting of purifying column bottom are in the denitration layer and the setting at purifying column middle part are in purifying column top and intercommunication a plurality of gas vents of purifying column outside, the desulfurization layer includes the reaction tank of splendid attire calcium carbonate reaction liquid, the denitration layer includes that the reaction of bearing sodium hydroxide holds in the palm, the intake pipe is including setting up the outside air inlet of purifying column, and set up inside and let in of purifying column a plurality of gas outlets on desulfurization layer, the gas outlet is less than the liquid level of calcium carbonate reaction liquid.

2. The marine exhaust gas treatment and purification tower according to claim 1, wherein the desulfurization layer further comprises a spray layer disposed between the reaction tank and the reaction tray, and the spray layer is provided with a plurality of spray heads for spraying the calcium carbonate reaction solution.

3. The marine exhaust gas treatment purification tower according to claim 2, wherein a replenishment tank for containing the calcium carbonate reaction solution is arranged outside the purification tower, the replenishment tank is provided with a replenishment port, the spray layer is connected with the replenishment tank through an extraction mechanism, and the reaction tank is communicated with the replenishment tank.

4. The marine exhaust gas treatment purification tower according to claim 2, wherein a defogging layer is disposed between the spray head and the spray head, and between the spray head and the inner wall of the purification tower.

5. The marine exhaust gas treatment purification tower according to claim 1, wherein the reaction tray is provided with a conveyor belt for circulating transfer, and an openable material adding port for adding sodium hydroxide is arranged above the denitration layer and on the side wall of the purification tower.

6. The tower of claim 5, wherein the conveyor belt is driven by a driving motor and/or a "rocker-gear mechanism".

7. The marine exhaust gas treatment purification tower of claim 5, wherein the conveyor belt is inclined downward in a conveying direction of the sodium hydroxide.

8. The marine exhaust gas treatment purification tower of claim 7, wherein a waste collection tank is disposed at the bottom of the purification tower opposite to the lowest end of the conveyor belt, and the waste collection tank is separated from the reaction tank by a partition.

9. The marine exhaust gas treatment and purification tower of claim 8, wherein the waste collection tank is communicated with the side wall of the bottom of the purification tower through a waste collection pipe, and the height of the partition plate is lower than the highest height of a liquid level which can be accommodated by the air inlet pipe.

10. The tower of any one of claims 1 to 9, wherein a filter layer for wrapping sodium hydroxide is disposed in the exhaust port.

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