CN113134291A - A L type flue gas side is advanced gas device for on boats and ships flue gas desulfurization treatment tower - Google Patents
A L type flue gas side is advanced gas device for on boats and ships flue gas desulfurization treatment tower Download PDFInfo
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- CN113134291A CN113134291A CN202110564514.XA CN202110564514A CN113134291A CN 113134291 A CN113134291 A CN 113134291A CN 202110564514 A CN202110564514 A CN 202110564514A CN 113134291 A CN113134291 A CN 113134291A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
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Abstract
本发明公开了一种用于船舶尾气脱硫处理塔上的新型进气结构，即L型烟气侧进气装置，包括所述L型烟气侧进气装置位于脱硫塔（6）的底部，在进气装置的侧面设有进气口（1），进气口（1）和进气道（2）相连接，装置内部为环形烟道，在环形烟道上方设置一级伞帽（4）和二级伞帽（5），一级伞帽（4）和二级伞帽（5）分别与脱硫塔内部连通，进气装置底部为排水口（3）。本发明设在脱硫塔底部，在进气装置侧面布置有进气口，发动机的排烟管道直接通过进气口连通到脱硫塔，发动机排出的高温和高速的烟气经过特殊流场仿真设计的L型侧进气装置后，可以实现降温和降速，最后以一定的温度和稳定的流速进入到脱硫内的喷淋反应区。
The invention discloses a novel air intake structure for use on a ship tail gas desulfurization treatment tower, namely an L-shaped flue gas side intake device, comprising that the L-shaped flue gas side intake device is located at the bottom of the desulfurization tower (6), An air inlet (1) is provided on the side of the air inlet device, and the air inlet (1) is connected with the air inlet channel (2). The inside of the device is an annular flue, and a first-level umbrella cap (4) is arranged above the annular flue. ) and the secondary umbrella cap (5), the primary umbrella cap (4) and the secondary umbrella cap (5) are respectively communicated with the interior of the desulfurization tower, and the bottom of the air inlet device is a water outlet (3). The invention is located at the bottom of the desulfurization tower, and an air inlet is arranged on the side of the air inlet device. The exhaust pipe of the engine is directly connected to the desulfurization tower through the air inlet. After the L-shaped side air inlet device, it can achieve cooling and speed reduction, and finally enter the spray reaction zone in the desulfurization at a certain temperature and stable flow rate.
Description
Technical Field
The invention relates to an L-shaped flue gas side inlet device for a ship flue gas desulfurization treatment tower, and belongs to the technical field of ship flue gas desulfurization cleaning systems.
Background
The ship flue gas desulfurization treatment tower is communicated with a ship engine flue gas pipeline mainly through an air inlet device on the desulfurization tower, and the design of the air inlet device meets two requirements, wherein the first requirement is that the air inlet device can be conveniently communicated with an engine smoke exhaust pipe; secondly, the cooling and speed reduction effects on the flue gas are realized. Because the flue gas discharged by the engine is a mixed gas with high temperature and high flow speed, if the flue gas is required to be fully neutralized with the alkaline spray liquid in the desulfurizing tower for desulfurization, the flue gas needs to flow into a neutralization reaction zone in the desulfurizing tower at a certain temperature and speed, and therefore, the processes of temperature reduction and speed reduction need to be completed when the flue gas passes through the air inlet device.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an L-shaped flue gas side inlet device used on a ship flue gas desulfurization treatment tower.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides an L-shaped flue gas side air inlet device for a ship flue gas desulfurization treatment tower, which comprises an L-shaped flue gas side air inlet device positioned at the bottom of a desulfurization tower (6), wherein an air inlet (1) is arranged on the side surface of the air inlet device, the air inlet (1) is connected with an air inlet channel (2), the air inlet channel (2) is an annular flue (9), a primary umbrella cap (4) and a secondary umbrella cap (5) are arranged above the air inlet channel (2), the primary umbrella cap (4) and the secondary umbrella cap (5) are respectively communicated with the inside of the desulfurization tower (6), and a water outlet (3) is arranged at the bottom of the air inlet device.
The upper part of the desulfurizing tower (6) is provided with a spraying device (7) for spraying alkaline spraying liquid, and the space inside the inner wall of the annular flue (9) of the air inlet channel (2) is an area communicated with the inside of the desulfurizing tower by two-stage umbrella caps and is also an area for the waste water after the spraying liquid reacts with the flue gas to flow out of the desulfurizing tower. This inner wall space can be used for separating waste water and flue gas entry, prevents that waste water from flowing backward in the engine flue gas pipeline.
Through the L-shaped side air inlet device, high-temperature and high-speed smoke discharged by the engine flows upwards and uniformly in an annular shape through the annular flue, and enters the desulfurizing tower at a certain temperature and speed after passing through the two-stage umbrella caps. The alkaline spray liquid falls from the upper part of the desulfurizing tower and is in contact with and neutralization reaction with the flue gas flowing in through the umbrella cap in the desulfurizing tower, and the reacted waste water flows away from the water outlet at the lower part of the inner wall space.
The invention is compared with the analysis of the prior art:
at present, the existing air inlet device mainly has an I type (see attached figure 2) and a U type air inlet device (see attached figure 3), wherein the I type means that the air inlet device is arranged at the bottom of the desulfurization tower, an air inlet is arranged at the lower part, an engine smoke exhaust pipeline is directly communicated with the desulfurization tower from the lower part, the design and arrangement structure is compact, and the occupied ship space is less during installation. Because the direct through type communication is adopted, no curve is formed, and therefore the pipeline back pressure resistance caused to the engine is small. The alkaline spray liquid falls down in a mist form from the upper part of the desulfurizing tower to contact with the flue gas flowing upwards for neutralization reaction, and as a result of the neutralization reaction, sulfur in the flue gas is taken away by the spray liquid to form acidic wastewater, and the wastewater flows away from a water outlet on the side surface of the air inlet device. The I-shaped air inlet device achieves the speed reduction effect through the air inlet channel and the two-stage umbrella cap. The cooling of flue gas is then through two-stage umbrella cap and spray liquid carry out the heat exchange and reach, and high temperature flue gas gives the umbrella cap heat transfer when flowing through the umbrella cap, and spray liquid takes away the heat absorption again when scattering on the umbrella cap, realizes the purpose of flue gas cooling at last. The I type air inlet unit is because the engine exhaust pipe need follow the desulfurizing tower of lower part direct intercommunication, and the desulfurizing tower size all is bigger than the boats and ships chimney in general, so install I type air inlet unit's desulfurizing tower need demolish the rebuilding with boats and ships chimney on a large scale, and is great to the transformation work volume of boats and ships.
The U-shaped air inlet device is an external vertical cooling pipeline, is positioned on the side part of the desulfurizing tower and forms an appearance similar to a letter U with the desulfurizing tower, and the cooling pipeline is mainly used for cooling and reducing the speed of flue gas. The lower part of the cooling pipeline is communicated with the lower part of the side of the desulfurizing tower, the upper part of the cooling pipeline is communicated with the flue gas pipeline, and a cooling spray device (8) is arranged in the cooling pipeline. The flue gas gets into from cooling pipe upper portion, and the temperature drops after spraying through cooling in advance, then flows through cooling pipe speed reduction gradually downwards, then gets into from the side lower part of desulfurizing tower, flows out from the upper portion export of desulfurizing tower at last. In the whole process, the smoke needs to go downwards, change the direction and then go upwards, and a large smoke back pressure resistance is caused to the engine. The alkaline spray liquid falls down in a mist form from the upper part of the desulfurization tower and contacts with the flue gas ascending in the desulfurization tower to carry out neutralization reaction, and the reacted wastewater flows away from a water outlet in the middle of the bottom of the desulfurization tower; the desulfurizing tower of installation U type air inlet unit is owing to the existence of external cooling pipe, so can design and arrange the outside at the boats and ships chimney, draws forth the pipe of discharging fume after through the simple trompil with the chimney side and communicates the cooling pipe entry, so adopt U type air inlet unit's desulfurizing tower relatively easy design and arrange, the shortcoming need occupy the boats and ships chimney outside very big some space.
The two air inlet devices respectively have advantages and disadvantages, the I-type air inlet device has the advantages of compact structure, small occupied space and small pipeline back pressure resistance of flue gas, is beneficial to the flow of the flue gas, but needs to be expanded and modified to a ship chimney, and the workload of ship modification is large. The U-shaped air inlet device has the advantages that the smoke exhaust pipe can be led out from the flue pipe of the ship and connected to the desulfurizing tower, so that the desulfurizing tower can not be limited by the space in the flue pipe, and the desulfurizing tower is designed and arranged in a relatively idle area on the ship, and has the defects that the desulfurizing tower is large in overall size and occupies a large ship space; and because the reason of cooling pipe, the flue gas needs to pass through a plurality of wide-angle diversions when passing through, causes the engine flue gas backpressure resistance great, is unfavorable for the flow of flue gas.
Although through development for many years, the U-shaped and I-shaped air inlet devices on the existing ship tail gas desulfurization tower products are relatively mature in technology, the outstanding defects of the two structural forms still bother manufacturers and shipowners, and if a new air inlet type desulfurization tower is provided, the defects or partial defects of the two air inlet devices can be avoided, namely the air inlet type of the desulfurization tower which is small in ship occupation space, small in smoke back pressure resistance and easy to install and arrange can solve important puzzlements and difficulties for the manufacturers and shipowners, and more and better selectable schemes are provided for the design and arrangement of the ship tail gas cleaning desulfurization tower.
The invention has the beneficial effects that: the L-shaped side air inlet device does not need a cooling pipeline of the U-shaped air inlet device, and can be connected into the desulfurizing tower from the side surface, so that the L-shaped side air inlet device can be arranged in an area outside a ship chimney, but the occupied space of the L-shaped side air inlet device is smaller than that of the desulfurizing tower of the U-shaped air inlet device. The L-shaped side air inlet device redesigns the middle two-stage umbrella cap adopted by the original I-shaped mode into an inward-inclined annular two-stage umbrella cap by using computer flow field simulation design software, so that the smoke flowing out of the umbrella cap is changed from annular rising diffusion into rising diffusion from the middle part to the periphery. The redesigned umbrella cap structure reduces the escape phenomenon caused by non-uniformity of the smoke in the rising diffusion process, increases the contact area of the smoke and the spraying liquid, and improves the neutralization reaction efficiency. The L-shaped side air inlet device is provided with only one bend, the smoke flows relatively smoothly, and the smoke backpressure resistance of the engine is relatively low.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an L-shaped flue gas side intake apparatus of the present invention.
Fig. 2 is a structural view of a type I intake apparatus in the related art.
Fig. 3 is a structural view of a U-shaped intake device in the related art.
Fig. 4 is a physical structure diagram of an L-shaped flue gas side intake device.
In the drawings:
1, an air inlet; 2, an air inlet channel; 3, a water outlet; 4, a first-level umbrella cap; 5, a secondary umbrella cap; 6, a desulfurizing tower; 7, a spraying device; 8, cooling and spraying devices; 9 annular flue.
In fig. 1-3, the solid arrows indicate the flow direction of the spraying liquid, and the hollow arrows indicate the flow direction of the flue gas.
Detailed Description
Example 1
The embodiment provides a L type flue gas side air inlet unit for on boats and ships flue gas desulfurization treatment tower, include L type flue gas side air inlet unit is located the bottom of desulfurizing tower (6), is equipped with air inlet (1) in air inlet unit's side, and air inlet (1) and intake duct (2) are connected, and intake duct (2) are inside to be the annular flue, sets up one-level umbrella hat (4) and second grade umbrella hat (5) above intake duct (2), and one-level umbrella hat (4) and second grade umbrella hat (5) communicate with the desulfurizing tower is inside respectively, and the air inlet unit bottom is outlet (3).
The upper part of the desulfurizing tower (6) is provided with a spraying device (7) for spraying alkaline spraying liquid, and the space inside the inner wall of the annular flue of the device is an area where two-stage umbrella caps are communicated with the inside of the desulfurizing tower and also an area where wastewater after neutralization reaction of the spraying liquid flows out of the desulfurizing tower. This inner wall space can be used for separating waste water and flue gas entry, prevents that waste water from flowing backward in the engine flue gas pipeline.
Specifically, the L-shaped flue gas side inlet device is positioned at the bottom of the desulfurization tower, and an air inlet is arranged on the side surface of the inlet device. The inside of the air inlet device is an annular flue and an inner wall space, a first-stage umbrella cap and a second-stage umbrella cap are arranged above the annular flue, the first-stage umbrella cap and the second-stage umbrella cap are communicated with the inside of the desulfurizing tower, and a water drainage hole is formed in the lower part of the inner wall space. The specific working process of the L-shaped smoke side inlet device is that firstly, an engine smoke exhaust pipeline is directly communicated with an air inlet of the inlet device, and smoke enters the annular flue through the air inlet. The flue gas carries out preliminary deceleration and forms annular distribution and rise in the annular flue, and after reaching the one-level umbrella cap, partly flue gas is the flow of s shape in one-level umbrella cap department and carries out the deceleration to give the umbrella cap with the heat transfer, the umbrella cap then takes away the heat through drenching the liquid that sprays on the umbrella cap, through this process after, the flue gas finally flows into the desulfurizing tower. The residual flue gas continuously rises to reach the secondary umbrella cap, and flows into the desulfurizing tower after the speed reduction and temperature reduction processes which are the same as those of the primary umbrella cap. After passing through the two stages of umbrella caps, the flow speed and the temperature of the flue gas reach the state suitable for contacting with the alkaline spray liquid and carrying out neutralization and desulfurization reaction, and the flue gas uniformly rises and diffuses from the middle part to the periphery to the inside of the desulfurization tower through the upper part of the umbrella caps, thereby being beneficial to improving the desulfurization efficiency and the desulfurization effect. The alkaline spray liquid is uniformly sprayed and falls in a mist shape on the upper part of the desulfurizing tower, and contacts with the rising flue gas to carry out neutralization reaction, and the acidic wastewater generated after the neutralization reaction flows out through a water outlet in the middle of the lower part of the desulfurizing tower. The flue gas after desulfurization meets the relevant emission standard and is discharged into the atmosphere from an outlet at the top of the desulfurizing tower.
Fig. 1, fig. 2 and fig. 3 show schemes of desulfurizing towers of different air intake devices under the same design condition, wherein the occupied space size is I type > L type > U type from low to high in sequence, the difficulty degree of equipment installation is L type > U type > I type from easy to difficult in sequence, and the back pressure resistance caused by engine smoke is I type > L type > U type from small to large in sequence. Therefore, the L-shaped side air inlet device has obvious comprehensive advantages, i.e. the L-shaped side air inlet device is compatible with the advantages of I-shaped and U-shaped air inlet devices, and the L-shaped side air inlet device has breakthrough. The realization of the scheme of the L-shaped side air inlet device provides a choice for manufacturers and boat owners of the desulfurizing tower.
By comparing the technical structure characteristics of the documents shown in fig. 1-3, it can be seen that the L-shaped side air inlet device is arranged at the bottom of the desulfurization tower, the air inlet is arranged on the side surface of the air inlet device, and the smoke exhaust pipeline of the engine is directly communicated to the desulfurization tower through the air inlet. After high-temperature and high-speed flue gas discharged by an engine passes through an L-shaped side air inlet device designed by special flow field simulation, the cooling and the speed reduction can be realized, and finally the flue gas enters a spraying reaction area in desulfurization at a certain temperature and a stable flow speed. The desulfurizing tower that installation L type side was admitted air can design and install the region beyond the boats and ships chimney, and the exhaust pipe of engine need not be like the external cooling pipe on the U type air inlet unit, also need not like I type air inlet unit will carry out extensive demolish the expansion with the chimney and reform transform in order to satisfy the condition of installation, but follow the simple trompil on the boats and ships chimney and draw forth the pipe of discharging fume on L type air inlet unit. Therefore, the L-shaped side air inlet device occupies space better than the U-shaped air inlet device on the ship, is easier to design, arrange and realize than the I-shaped air inlet device, and only has one large-angle reversing bend, the smoke flows smoothly, and the smoke back pressure resistance caused to the engine is lower.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (2)
1. The utility model provides a L type flue gas side entry unit for on boats and ships flue gas desulfurization treatment tower, a serial communication port, include L type flue gas side entry unit is located the bottom of desulfurizing tower (6), is equipped with air inlet (1) in air inlet unit's side, and air inlet (1) and intake duct (2) are connected, and the device is inside to be annular flue (9), sets up one-level umbrella hat (4) and second grade umbrella hat (5) above annular flue (9), and one-level umbrella hat (4) and second grade umbrella hat (5) communicate with the desulfurizing tower is inside respectively, and the air inlet unit bottom is outlet (3).
2. The L-shaped flue gas side inlet device for the ship flue gas desulfurization treatment tower of claim 1, wherein a spraying device (7) is arranged at the upper part of the desulfurization tower (6).
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| CN202110564514.XA CN113134291B (en) | 2021-05-24 | 2021-05-24 | L-shaped flue gas side inlet device for ship flue gas desulfurization tower |
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| CN113134291B CN113134291B (en) | 2025-09-16 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4968335A (en) * | 1989-02-07 | 1990-11-06 | Ube Industries, Ltd. | Gas absorption tower |
| KR20110081573A (en) * | 2010-01-08 | 2011-07-14 | (주)현보산업 | Pollutant Purifier |
| CN202983506U (en) * | 2012-12-18 | 2013-06-12 | 北京威肯众合环保科技有限公司 | Oil furnace smoke purification combined tower integrating dust collection, smoke elimination and desulfurization |
| CN204220015U (en) * | 2014-11-14 | 2015-03-25 | 河北宇清环保设备有限公司 | A kind of desulfurizing tower deduster |
| CN205252881U (en) * | 2015-12-29 | 2016-05-25 | 杨文瑞 | Chimney exhaust recovery device |
| CN206276217U (en) * | 2016-11-10 | 2017-06-27 | 盱眙绿环水处理有限公司 | A kind of ladder shunting spray column |
| CN216024050U (en) * | 2021-05-24 | 2022-03-15 | 海德威科技集团(青岛)有限公司 | A L type flue gas side is advanced gas device for on boats and ships flue gas desulfurization treatment tower |
-
2021
- 2021-05-24 CN CN202110564514.XA patent/CN113134291B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4968335A (en) * | 1989-02-07 | 1990-11-06 | Ube Industries, Ltd. | Gas absorption tower |
| KR20110081573A (en) * | 2010-01-08 | 2011-07-14 | (주)현보산업 | Pollutant Purifier |
| CN202983506U (en) * | 2012-12-18 | 2013-06-12 | 北京威肯众合环保科技有限公司 | Oil furnace smoke purification combined tower integrating dust collection, smoke elimination and desulfurization |
| CN204220015U (en) * | 2014-11-14 | 2015-03-25 | 河北宇清环保设备有限公司 | A kind of desulfurizing tower deduster |
| CN205252881U (en) * | 2015-12-29 | 2016-05-25 | 杨文瑞 | Chimney exhaust recovery device |
| CN206276217U (en) * | 2016-11-10 | 2017-06-27 | 盱眙绿环水处理有限公司 | A kind of ladder shunting spray column |
| CN216024050U (en) * | 2021-05-24 | 2022-03-15 | 海德威科技集团(青岛)有限公司 | A L type flue gas side is advanced gas device for on boats and ships flue gas desulfurization treatment tower |
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| CN113134291B (en) | 2025-09-16 |
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