CN114011233A - Energy-saving and convenient-to-maintain washing tower and waste gas desulfurization treatment method - Google Patents
Energy-saving and convenient-to-maintain washing tower and waste gas desulfurization treatment method Download PDFInfo
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- CN114011233A CN114011233A CN202111317788.5A CN202111317788A CN114011233A CN 114011233 A CN114011233 A CN 114011233A CN 202111317788 A CN202111317788 A CN 202111317788A CN 114011233 A CN114011233 A CN 114011233A
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- water retaining
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- 239000002912 waste gas Substances 0.000 title claims abstract description 135
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 48
- 230000023556 desulfurization Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005406 washing Methods 0.000 title claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 20
- 238000005201 scrubbing Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000007921 spray Substances 0.000 description 21
- 230000000630 rising effect Effects 0.000 description 14
- 238000009987 spinning Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
-
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- 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
- B01D53/50—Sulfur oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides an energy-saving and easy-to-maintain washing tower and a waste gas desulfurization treatment method, which comprise a tower body, a waste gas inlet arranged at the bottom of the tower body, and a waste gas outlet arranged on the tower body, wherein a plurality of nozzles are arranged in the tower body and used for spraying slurry to carry out desulfurization treatment on waste gas; the invention increases the energy-saving property of the ship exhaust gas desulfurization treatment and improves the exhaust gas desulfurization effect.
Description
Technical Field
The invention relates to the field of ship washing towers, in particular to an energy-saving and convenient-to-maintain washing tower and a waste gas desulfurization treatment method.
Background
In order to reduce the effect of SO2 in the exhaust gas of ships on the atmospheric environment, IMO 70's conference on the protection of the marine environment has decided to implement the regulation of higher standards for sulfur content from 1/1 of 2020, i.e. the sulfur content of global marine fuels should not exceed 0.5% and the European Emission Control Area (ECA) should not exceed 0.1%. There are three current approaches to fulfilling the IMO requirements for sulfur emissions: low-sulfur fuel oil, Liquefied Natural Gas (LNG) and ship exhaust gas desulfurization technology.
In the aspect of the ship exhaust gas desulfurization technology, the core equipment washing tower is mainly divided into a U-shaped tower and an I-shaped tower, wherein the U-shaped tower is more suitable for a large ship with enough installation space, and the I-shaped tower is more suitable for a small ship with limited installation space. Meanwhile, the U-shaped tower has a spray tower and a packed tower, and the I-shaped tower is usually a spray tower.
At present, in order to ensure the desulfurization efficiency, the type I tower on the market is generally higher in height, and is provided with a plurality of layers of spraying and very dense nozzle arrangement, so that the energy consumption of system operation is higher, and the pressure drop is larger. For small ships, especially for the old ships, the normal operation of the engine is affected by too large voltage drop, and the power supply system of the original ship is affected by too high energy consumption.
Disclosure of Invention
The invention aims to provide a washing tower which is energy-saving and convenient to maintain and can improve the energy-saving performance of the ship exhaust gas desulfurization treatment and the exhaust gas desulfurization treatment method.
In order to solve the technical problems, the invention provides an energy-saving and easy-to-maintain washing tower which comprises a tower body, a waste gas inlet arranged at the bottom of the tower body and a waste gas outlet arranged on the tower body, wherein a plurality of nozzles are arranged in the tower body and used for spraying slurry to carry out desulfurization treatment on waste gas, a water retaining swirler is also arranged between the waste gas inlet and the nozzles and used for blocking the slurry from entering the waste gas inlet and enabling the waste gas to generate rotational flow.
Further, the water retaining swirler comprises a water retaining cap arranged in the tower body and swirl vanes arranged on the peripheral side of the water retaining cap; the water retaining cap is arranged above the exhaust end of the exhaust gas inlet.
Furthermore, the plurality of nozzles are spirally distributed along the height direction of the tower body.
Further, the spraying direction of the nozzle is inclined downwards relative to the inner wall of the tower body.
Furthermore, an inclined angle is formed between the spraying direction of the nozzle and the central line of the cross section of the tower body.
Furthermore, the jetting ranges of two adjacent nozzles are intersected, and at least the central axis of the tower body is covered.
Furthermore, a cooling spraying layer is arranged between the water retaining cyclone and the plurality of nozzles and used for reducing the temperature of the waste gas.
Furthermore, the cooling spray layer comprises a spray pipe and a cooling nozzle arranged on the spray pipe.
The invention also discloses a waste gas desulfurization treatment method, which comprises the following steps: inputting waste gas into the washing tower from bottom to top; forming waste gas rotational flow by the water retaining cyclone in the process that the waste gas floats upwards; the waste gas rotational flow is sprayed by slurry which is obliquely sprayed downwards through a plurality of desulfurization treatment layers in sequence to carry out desulfurization treatment; subsequently, desulfurized flue gas is obtained.
At least one slurry is obliquely and downwards sprayed from different heights and different directions of the washing tower and is concentrated on the central axis of the washing tower to form a slurry spraying area, and the waste gas is spirally arranged in the slurry spraying area and is sprayed in a surrounding manner.
When the invention carries out desulfurization treatment on the ship waste gas, the ship waste gas enters from the waste gas inlet, and in the process that the waste gas floats upwards, the waste gas passes through the position of the water retaining cyclone, and the waste gas is rotated by the water retaining swirler so that the waste gas generates rotational flow in the process of continuously rising, thereby leading the waste gas to rise in a rotational flow shape to reduce the rising speed of the waste gas, simultaneously increasing the transverse area in the rising process of the waste gas because the waste gas rises in the rotational flow shape, leading the waste gas to fully react with the desulfurization slurry sprayed by the nozzle, thereby increasing the desulfurization treatment effect of the waste gas, and not only increasing the time for the waste gas to be separated from the treatment because the rising speed of the waste gas is reduced, meanwhile, the same desulfurization effect can be achieved without densely arranging the nozzles and building the washing tower higher, so that the energy conservation of the washing tower in the scheme is ensured; in addition, because the nozzle need be to the exhaust gas blowout desulfurization thick liquid in order to guarantee that exhaust gas obtains desulfurization treatment, consequently desulfurization thick liquid has the possibility that gets into the waste gas entry after spraying out, because the in-process that the water retaining swirler carries out the whirl to exhaust gas can also block the thick liquid this moment for the thick liquid can not enter into the waste gas entry, and then has avoided the thick liquid to flow backward to the condition of host computer along the waste gas entry.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a side schematic view of a water retention cyclone in accordance with the present invention.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 1 in accordance with the present invention.
FIG. 4 is a schematic view of the spiral distribution of a plurality of nozzles according to the present invention.
Fig. 5 is a cross-sectional view taken along line B-B of fig. 1 in accordance with the present invention.
Reference numerals: 1. an exhaust gas inlet; 2. a water outlet; 3. an overflow port; 4. a water retaining swirler; 5. a nozzle; 6. a demister; 7. an exhaust gas outlet; 8. a demister flushing water pipe; 9. a support; 10. a cooling spray layer; 11. a water retaining cap; 12. a spinning disk.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1-5, the invention provides an energy-saving and easy-to-maintain washing tower, which comprises a tower body, a waste gas inlet 1 formed in the bottom of the tower body, and a waste gas outlet 7 formed in the tower body, wherein a plurality of nozzles 5 are arranged in the tower body and used for spraying slurry to desulfurize waste gas, a water-retaining cyclone 4 is further arranged between the waste gas inlet 1 and the plurality of nozzles 5, and the water-retaining cyclone 4 is used for blocking the slurry from entering the waste gas inlet 1 and enabling the waste gas to generate rotational flow.
When the ship waste gas is desulfurized, the ship waste gas enters from the waste gas inlet, and in the process that the waste gas floats upwards, the waste gas passes through the position of the water retaining cyclone, and the waste gas is rotated by the water retaining swirler so that the waste gas generates rotational flow in the process of continuously rising, thereby leading the waste gas to rise in a rotational flow shape to reduce the rising speed of the waste gas, simultaneously increasing the transverse area in the rising process of the waste gas because the waste gas rises in the rotational flow shape, leading the waste gas to fully react with the desulfurization slurry sprayed by the nozzle, thereby increasing the desulfurization treatment effect of the waste gas, and not only increasing the time for the waste gas to be separated from the treatment because the rising speed of the waste gas is reduced, meanwhile, the same desulfurization effect can be achieved without densely arranging the nozzles and building the washing tower higher, so that the energy conservation of the washing tower in the scheme is ensured; in addition, because the nozzle need be to the exhaust gas blowout desulfurization thick liquid in order to guarantee that exhaust gas obtains desulfurization treatment, consequently desulfurization thick liquid has the possibility that gets into the waste gas entry after spraying out, because the in-process that the water retaining swirler carries out the whirl to exhaust gas can also block the thick liquid this moment for the thick liquid can not enter into the waste gas entry, and then has avoided the thick liquid to flow backward to the condition of host computer along the waste gas entry.
In the scheme, the waste gas inlet is positioned at the bottom of the tower body, and the waste gas outlet is positioned at the top of the tower body, so that waste gas can enter the waste gas outlet from the waste gas inlet to be discharged in the rising process, and other pneumatic driving devices are not needed to drive the waste gas, so that the energy consumption in the waste gas flowing process is reduced; in addition, a plurality of supports 9 are arranged on the outer side of the tower body, and the washing tower is connected to the ship through the supports, so that the stability of the washing tower is guaranteed.
Preferably, the water retaining swirler 4 comprises a water retaining cap 11 arranged in the tower body, and a swirler 12 arranged on the peripheral side of the water retaining cap 11; the water retaining cap 11 is arranged above the air outlet end of the waste gas inlet 1.
Specifically, after waste gas enters through a waste gas inlet and simultaneously the desulphurization slurry is sprayed out by a nozzle, a water retaining cap is started to rotate relative to the tower body, and then the water retaining cap drives the rotational flow sheet to rotate, at the moment, because the water retaining cap blocks the upper part of the air outlet end of the waste gas inlet, so that the slurry can be blocked by the water retaining cap after the slurry is sprayed out from the nozzles on the upper side of the water retaining cap, the condition that the slurry flows backwards to the waste gas inlet is avoided, and the water retaining cap can throw away the slurry to the peripheral side of the water retaining cap in the rotating process, thereby further increasing the safety of the waste gas inlet, meanwhile, as the water retaining cap drives the spinning disk to rotate, when the waste gas rises to pass through the position of the spinning disk, the rotating swirl vane can drive the passing waste gas to rotate, so that the waste gas forms a swirl shape, the reaction area between the flue gas and the desulfurization slurry is increased while the rising speed of the flue gas is reduced.
In this scheme, the inside motor that is equipped with of manger plate cap, the manger plate cap passes through the motor and drives and rotate.
In another embodiment of this scheme, manger plate cap is for the tower body motionless, and the spinning disk of manger plate cap week side is the slope setting for the direction of gravity for waste gas upwards floats and produces waste gas whirl by oneself behind the spinning disk of flowing through, in order to guarantee to reduce waste gas rising speed.
It is worth mentioning that, the tower body is at the downside of manger plate swirler, be located the week side position of waste gas inlet, be provided with outlet 2 and overflow mouth 3, and the position that sets up of overflow mouth is higher than the outlet, after the waste gas inlet was kept away from to the thick liquid through manger plate swirler, the thick liquid can be along the downward landing of inner wall of tower body, and then discharge through the outlet, with guarantee that the thick liquid can not pile up and stretch to waste gas inlet, if the outlet blocks up or the thick liquid too much leads to the outlet to come the time of circumstances such as not discharging simultaneously, the overflow mouth can carry out the secondary to the thick liquid of overflow and discharge, increase the effect that the thick liquid discharged.
Specially, because in this scheme, outlet, overflow mouth and waste gas entry all are in the bottom of tower body for outlet and overflow mouth need not to install alone and set up, have reduced and have arranged the space, and the less boats and ships in adaptation space more use.
Preferably, the plurality of nozzles 5 are arranged in a spiral shape along the height direction of the tower body.
It is concrete, because waste gas forms whirl form upflow behind the manger plate swirler, the cooperation is a plurality of nozzles that the heliciform distributes this moment, make the thick liquid that a plurality of nozzles sprayed the department also can form the heliciform and distribute, and then the distribution angle that sprays through the thick liquid and the waste gas that the dynamics of spraying to the whirl form carries out further promotion, guarantee that waste gas can also keep the whirl form at the in-process that continues to rise, the thick liquid that is the heliciform and sprays also can match the waste gas of whirl form more in addition, increase the fully reacted effect between waste gas and the desulfurization thick liquid.
Preferably, the spraying direction of the nozzles 5 is inclined downwards relative to the inner wall of the tower.
Specifically, since the spraying direction of the nozzle is inclined downward, the slurry at the spraying position can have a certain blocking effect on the rising exhaust gas, so that the resistance to the exhaust gas is increased, and the rising flow rate of the exhaust gas is reduced, in the embodiment of the present embodiment, the inclined downward angle of the nozzle is as shown by an angle B in fig. 4, and preferably, the inclined downward angle is 0-15 °.
Preferably, the spraying direction of the nozzles 5 has an inclined angle with the center line of the cross-section of the tower body.
Specifically, when a plurality of nozzles are spirally distributed along the height direction of the tower body, an inclination angle is formed between the spraying direction of the nozzles and the central line of the cross section of the tower body, so that after the plurality of nozzles spray out the slurry, the spiral slurry spraying distribution structure is formed more easily, and the promotion of the slurry to the rotational flow state of the waste gas is ensured, and the full reaction between the slurry and the waste gas is ensured.
Particularly, because the spiral slurry spraying is matched with the spiral waste gas rising form, on the basis of ensuring the sufficient reaction between the slurry and the waste gas, the amount of the slurry spraying for achieving the required desulfurization efficiency can be reduced, the running power of the water pump is reduced, and the energy saving performance is further improved.
In this solution the angle of inclination between the direction of the jets and the centre line of the tower cross-section is shown as angle a in fig. 5, preferably 15-45.
It is worth mentioning that, different quantity can be set for according to specific boats and ships size and specification to the circumference distribution quantity of nozzle along the tower body, the position at same nozzle installation simultaneously, also can install a plurality of nozzles according to actual demand, in order to guarantee the result of use of nozzle, in addition when installing a plurality of nozzles on same nozzle installation position, some nozzles in the unified installation position are the level setting, another part nozzle is slope 45 degrees downwards and sets up, and the nozzle that sets up through the level covers the transverse section of tower body, and the nozzle that the slope set up downwards then is used for playing the effect that promotes waste gas and carry out the whirl.
Preferably, the jetting ranges of two adjacent nozzles 5 are intersected, and at least the central axis of the tower body is covered; when making two adjacent nozzles spray the thick liquid, the scope of spraying between two nozzles can have partial coincidence, guarantees to appear spraying the clearance between two adjacent nozzles, and then guarantees that the thick liquid sprays the abundant covering reaction to waste gas.
Preferably, a plurality of mounting holes are formed in the side wall of the tower body in a penetrating manner, and the plurality of nozzles 5 are detachably connected into the corresponding mounting holes from the outer side to the inner side of the tower body.
Specifically, the nozzle in this scheme wears to establish the installation from the tower body outside to the tower body inboard for the direction that sprays of nozzle is inside, and dismantles the direction outwards, makes the nozzle appear damaging when needing to be worse or maintain, and maintenance person only need follow the outside of scrubbing tower and can dismantle the nozzle, need not to get into inside the tower body, has increased the convenience of nozzle change maintenance in-process.
Specially, the nozzle is installed fixedly through the flange when installing to the mounting hole for mutual sealing between nozzle and the mounting hole, and when needs are dismantled the nozzle, only need to dismantle the flange, can accomplish the dismantlement of nozzle fast.
Preferably, a cooling spray layer 10 is arranged between the water retaining cyclone 4 and the plurality of nozzles 5 for reducing the temperature of the exhaust gas.
It is specific, behind the manger plate swirler at waste gas, at first can spray the layer through the cooling, and spray the lower desulfurization thick liquid of layer temperature through the cooling, and then carry out preliminary desulfurization treatment to waste gas, still cool down to the waste gas that is in under the high temperature condition simultaneously, in order to guarantee the desulfurization efficiency of follow-up reaction, in addition, tower body and inside spare part all adopt corrosion-resistant, high temperature resistant super stainless steel preparation, make the scrubbing tower that this scheme provided allow waste gas dry combustion method, waste gas does not directly handle the emission through the scrubbing tower through the cooling promptly, the use adaptability of scrubbing tower has been increased.
Preferably, the cooling spray layer 10 comprises a spray pipe and a cooling nozzle arranged on the spray pipe.
Specifically, when waste gas sprays the layer through the cooling, the lower desulfurization thick liquid of shower delivery temperature to spray through the cooling nozzle, in order to reach the effect that reduces high temperature waste gas.
In this scheme, the one end of shower is connected to the outside of scrubbing tower, guarantees the transport of cooling thick liquid, and the shape of shower can be arranged into shapes such as straight tube or ring canal simultaneously to the cooling nozzle also can install a plurality ofly, and when the shower was the straight tube shape, the crisscross distribution of a plurality of cooling nozzles was in one side or both sides of shower, and the jet direction of cooling nozzle can be towards upside or downside.
Preferably, a demister 6 is arranged on one side, close to the waste gas outlet 7, inside the tower body and used for demisting waste gas.
Specifically, after the desulfurization treatment of layer and nozzle is sprayed in the waste gas process cooling, carry out the defogging through the defroster to waste gas, the waste gas through after purifying is outwards discharged by the exhaust outlet afterwards.
Preferably, a demister washing water pipe 8 is arranged on one side of the demister 6 and used for cleaning the demister 6.
Specifically, because the defroster can be at the surface scale deposit of defroster after using for a long time, and the waste gas after the desulfurization treatment needs to carry out the defogging through the defroster and handles, if the scale deposit is more this moment, leads to the waste gas after the desulfurization treatment to be contaminated once more easily, consequently carries out periodic washing through defroster washpipe to the surface of defroster to guarantee the clean degree of defroster self, improve exhaust emission's effect.
In particular, the washing tower provided by the scheme is suitable for a seawater sodium hydroxide method, a seawater magnesium hydroxide method and other mixing methods, and is wide in application range.
The invention also discloses a waste gas desulfurization treatment method, which comprises the following steps: inputting waste gas into the washing tower from bottom to top; the waste gas forms waste gas rotational flow through the water retaining cyclone 4 in the process that the waste gas floats upwards; the waste gas rotational flow is sprayed by slurry which is obliquely sprayed downwards through a plurality of desulfurization treatment layers in sequence to carry out desulfurization treatment; subsequently, desulfurized flue gas is obtained.
At least one slurry is obliquely and downwards sprayed from different heights and different directions of the washing tower and is concentrated on the central axis of the washing tower to form a slurry spraying area, and the waste gas is spirally arranged in the slurry spraying area and is sprayed in a surrounding manner.
In this scheme, the multilayer desulfurization treatment layer includes a plurality of nozzles that are the heliciform and distribute along the direction of height of tower body, and each nozzle sprays thick liquid with the mode of slope downward injection, and wherein the distribution position and the installation inclination of nozzle are the same as in above-mentioned scheme.
In some embodiments, the exhaust gas is driven to rotate to form a rotational flow of the exhaust gas when passing through the rotating water-retaining cyclone 4, and the structure of the water-retaining cyclone in the present solution is the same as that in the above solution.
When waste gas when the manger plate swirler, manger plate cap 11 rotates and drives spinning disk 12 and rotates, and waste gas upwards floats the position through the spinning disk this moment to it is rotatory to drive waste gas through spinning disk under the rotation state, and then makes waste gas form the whirl and continue upwards floating.
In another embodiment, the water retaining cap is stationary relative to the tower body, and the rotational flow sheet is inclined relative to the height direction, so that the exhaust gas floats upwards and flows through the rotational flow sheet to generate exhaust gas rotational flow.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an energy-conserving scrubbing tower of being convenient for maintenance, includes the tower body, locates waste gas entry (1) of tower body bottom, locate waste gas outlet (7) on the tower body, a serial communication port, be equipped with a plurality of nozzles (5) in the tower body for the blowout thick liquid carries out desulfurization treatment to waste gas, waste gas entry (1) with still be equipped with manger plate swirler (4) between a plurality of nozzles (5), manger plate swirler (4) are used for blockking that the thick liquid gets into waste gas entry (1) and are used for making waste gas produce the whirl.
2. The energy efficient and easy to maintain scrub column of claim 1, wherein: the water retaining swirler (4) comprises a water retaining cap (11) arranged in the tower body and a swirler disc (12) arranged on the peripheral side of the water retaining cap (11); the water retaining cap (11) is arranged above the air outlet end of the waste gas inlet (1).
3. The energy efficient and easy to maintain scrub column of claim 1, wherein: the plurality of nozzles (5) are spirally distributed along the height direction of the tower body.
4. The energy efficient and easy to maintain scrub column of claim 1, wherein: the spraying direction of the nozzle (5) is inclined downwards relative to the inner wall of the tower body.
5. The energy efficient and easy to maintain scrub column of claim 1, wherein: an inclined angle is formed between the spraying direction of the nozzle (5) and the central line of the cross section of the tower body.
6. The energy efficient and easy to maintain scrub column of claim 1, wherein: the jetting ranges of two adjacent nozzles (5) are intersected and at least cover the central axis of the tower body.
7. The energy efficient and easy to maintain scrub column of claim 1, wherein: and a cooling spraying layer (10) is arranged between the water retaining cyclone (4) and the plurality of nozzles (5) and is used for reducing the temperature of the waste gas.
8. The energy efficient and easy to maintain scrub column of claim 7, wherein: the cooling spraying layer (10) comprises a spraying pipe and a cooling nozzle arranged on the spraying pipe.
9. A method for desulfurization treatment of exhaust gas, comprising the steps of: inputting waste gas into the washing tower from bottom to top; the waste gas forms waste gas rotational flow through the water retaining cyclone (4) in the process that the waste gas floats upwards; the waste gas rotational flow is sprayed by slurry which is obliquely sprayed downwards through a plurality of desulfurization treatment layers in sequence to carry out desulfurization treatment; subsequently, desulfurized flue gas is obtained.
10. The exhaust gas desulfurization processing method according to claim 9, characterized in that: at least one slurry is obliquely and downwards sprayed from different heights and different directions of the washing tower and is concentrated on the central axis of the washing tower to form a slurry spraying area, and the waste gas is spirally arranged in the slurry spraying area and is sprayed in a surrounding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111317788.5A CN114011233B (en) | 2021-11-09 | 2021-11-09 | Energy-saving washing tower convenient to maintain and waste gas desulfurization treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111317788.5A CN114011233B (en) | 2021-11-09 | 2021-11-09 | Energy-saving washing tower convenient to maintain and waste gas desulfurization treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114011233A true CN114011233A (en) | 2022-02-08 |
| CN114011233B CN114011233B (en) | 2024-04-26 |
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Family Applications (1)
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| CN202111317788.5A Active CN114011233B (en) | 2021-11-09 | 2021-11-09 | Energy-saving washing tower convenient to maintain and waste gas desulfurization treatment method |
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