CN114146538A - Absorption dust removal tower and dust removal method thereof - Google Patents
Absorption dust removal tower and dust removal method thereof Download PDFInfo
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- CN114146538A CN114146538A CN202111631510.5A CN202111631510A CN114146538A CN 114146538 A CN114146538 A CN 114146538A CN 202111631510 A CN202111631510 A CN 202111631510A CN 114146538 A CN114146538 A CN 114146538A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 75
- 239000000428 dust Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 110
- 239000007789 gas Substances 0.000 claims abstract description 56
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003546 flue gas Substances 0.000 claims abstract description 41
- 230000002745 absorbent Effects 0.000 claims abstract description 31
- 239000002250 absorbent Substances 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 5
- 230000004907 flux Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 239000000779 smoke Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010410 dusting Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention provides an absorption dust removal tower and a dust removal method thereof, and relates to the technical field of absorption tower equipment, wherein an absorbent and flue gas in a flue gas flow channel enter from the top of a tower body and flow to the bottom of the tower body, so that the gas and the flue gas flow simultaneously in the tower from top to bottom, the defect of gas and liquid countercurrent is effectively avoided, a first cyclone sieve plate is arranged at the position close to the top of the tower body, solid particles are gradually enriched to the tower wall due to density difference under the action of centrifugal force and fluid resistance, the first cyclone sieve plate is separated into a main absorption area as an auxiliary absorption area, a second cyclone sieve plate is arranged at the position close to the bottom, a central area is filled, the gas and the liquid flowing down from the first cyclone sieve plate are absorbed by the filled, the main absorption area is used for realizing the integration of gas absorption and dust removal, the long-time stable operation can be realized, the low flux of the absorption tower in the gas and liquid countercurrent mode existing in the prior art is relieved, and the liquid flooding of the tower is easily caused, greatly influencing the production efficiency and being incapable of stably running for a long time.
Description
Technical Field
The invention relates to the technical field of absorption tower equipment, in particular to an absorption dust removal tower and a dust removal method thereof.
Background
As a large producing and manufacturing country, with the rapid development of economy, environmental problems are highlighted day by day in China, wherein incomplete utilization of fossil fuel is particularly prominent, so that smoke, sulfur, nitrate, carbon, dioxin and various heavy metals in the air are increased, and great harm is caused to the health of human beings, animals and plants. The absorption tower is widely used as main production equipment, the traditional absorption tower mostly adopts countercurrent operation, and internals such as tower plates, fillers and the like are arranged in the tower to enhance the absorption effect.
However, the absorption tower in the form of gas-liquid countercurrent has low flux, so flooding of the tower is easily caused, the production efficiency is greatly influenced, and the stable operation for a long time cannot be realized.
Disclosure of Invention
The invention aims to provide an absorption dust removal tower and a dust removal method thereof, and aims to solve the technical problems that the flux of the absorption tower in a gas-liquid countercurrent mode is low, flooding of the tower is easily caused, the production efficiency is greatly influenced, and the long-time stable operation cannot be realized in the prior art.
In a first aspect, the present invention provides an absorption dust removal tower for a flue gas treatment device, comprising: the device comprises a tower body, a first cyclone sieve plate and a second cyclone sieve plate;
the tower body is provided with a smoke circulation channel, the absorbent and smoke in the smoke circulation channel flow to the bottom of the tower body from the top of the tower body, and the first cyclone sieve plate and the second cyclone sieve plate are sequentially arranged along the flow direction of the smoke in the smoke circulation channel;
the first cyclone sieve plate is provided with first blades, the first blades are used for enabling solid particles in the flue gas to move along the direction of the inner wall of the tower body, the second cyclone sieve plate is provided with a packing area used for absorbing gas and liquid, and the gas and liquid in the flue gas circulation channel penetrate through the first cyclone sieve plate and flow to the packing area.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower also comprises a tower kettle;
the tower is characterized in that a solid particle collecting area is formed in the tower kettle, the tower kettle is connected with the bottom of the tower body, and solid particles in the flue gas circulation channel can enter the solid particle collecting area.
In an alternative embodiment of the method of the present invention,
a liquid storage area is formed in the tower kettle;
the tower kettle is internally provided with a wire mesh which divides the inner cavity of the tower kettle into the solid particle collecting area and the liquid storage area.
In an alternative embodiment of the method of the present invention,
and a liquid discharge port is formed at the bottom of the liquid storage area.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower also comprises a liquid inlet pipeline;
the liquid inlet line communicates with the liquid storage area.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower comprises a liquid spraying component;
the liquid spraying component is arranged at the top in the tower body and is communicated with the liquid storage area through a liquid circulation pipeline.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower also comprises a water pump;
the water pump is arranged on the liquid circulation pipeline.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower also comprises a gas outlet pipeline;
the gas outlet pipeline is connected with the tower body, a gas-liquid separation demister is arranged in the tower body, and the gas-liquid separation demister is arranged at the joint of the gas outlet pipeline and the tower body.
In an alternative embodiment of the method of the present invention,
the absorption dust removal tower also comprises a gas conveying pipeline;
one end of the gas conveying pipeline is connected with the top of the tower body, and the other end of the gas conveying pipeline is connected with the draught fan.
In a second aspect, the invention provides a dust removing method for an absorption dust removing tower, which comprises the following steps:
the absorbent in the tower body enters the liquid storage area after being distributed through the first cyclone sieve plate and the second cyclone sieve plate, so that the internal circulation of the absorbent is formed;
and opening the induced draft fan, enabling the flue gas to enter the tower body through a gas conveying pipeline, and discharging the gas in the tower body through a gas outlet pipeline.
In the absorption dust removal tower provided by the invention, the absorbent and the flue gas in the flue gas circulation channel enter from the top of the tower body and flow to the bottom of the tower body, so that the gas and the liquid flow in parallel from top to bottom in the tower simultaneously, the defect of gas-liquid countercurrent is effectively avoided, and the first cyclone sieve plate is arranged at the position close to the top of the tower body, under the action of centrifugal force and fluid resistance, the solid particles are gradually enriched towards the tower wall due to density difference, the first cyclone sieve plate is separated into a main absorption part and an auxiliary absorption part, the second cyclone sieve plate is arranged at the position close to the bottom, the central area is filled, gas and liquid flowing down from the first cyclone sieve plate are absorbed by the filled material, and the integrated flue gas absorption and dust removal is realized in a main absorption area, so that the integrated flue gas absorption and dust removal can be realized, the stable operation for a long time can be realized, the low flux of the absorption tower in a gas-liquid countercurrent mode in the prior art is relieved, the flooding of the flooding tower is easily caused, the production efficiency is greatly influenced, and the technical problem that the stable operation for a long time cannot be realized can be solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structure diagram of an absorption dust removal tower provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first cyclone sieve plate and a second cyclone sieve plate in an absorption dust removal tower provided by an embodiment of the present invention.
Icon: 100-a tower body; 200-a first cyclone sieve plate; 210-a first blade; 300-a second cyclone sieve plate; 310-a packing region; 400-tower kettle; 410-a solid particle collection zone; 420-a liquid storage area; 421-liquid discharge port; 422-liquid inlet line; 500-a liquid spray member; 600-a liquid circulation line; 610-a water pump; 700-gas outlet line; 710-gas-liquid separation demister; 800-gas delivery lines; 810-induced draft fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
As shown in fig. 1 and fig. 2, the absorption dust removal tower provided in this embodiment is used in a flue gas treatment device, and includes: the tower body 100, the first cyclone sieve plate 200 and the second cyclone sieve plate 300; the tower body 100 is provided with a flue gas circulation channel, the absorbent and the flue gas in the flue gas circulation channel flow to the bottom of the tower body 100 from the top of the tower body 100, and the first cyclone sieve plate 200 and the second cyclone sieve plate 300 are sequentially arranged along the flow direction of the flue gas in the flue gas circulation channel; the first cyclone sieve plate 200 has first vanes 210, the first vanes 210 are used for moving solid particles in the flue gas along the inner wall direction of the tower body 100, the second cyclone sieve plate 300 has a packing area 310 for absorbing the gas-liquid, and the gas-liquid in the flue gas flow channel passes through the first cyclone sieve plate 200 and flows to the packing area 310.
Specifically, a plurality of first cyclone sieve plates 200 are arranged on one side close to the top of the tower body 100, the first cyclone sieve plates 200 are specifically arranged as three-dimensional cyclone sieve plates, the first cyclone sieve plates 200 are provided with a plurality of first blades 210, solid particles in the flue gas do outward rotation movement under the action of the plurality of first blades 210, under the action of centrifugal force and fluid resistance, solid particles are enriched towards the tower wall, the second cyclone sieve plate 300 is specifically set as a composite filler type cyclone sieve plate, the second cyclone sieve plate 300 is arranged on one side of the first cyclone sieve plate 200 close to the bottom of the tower body 100, the second cyclone sieve plate 300 is provided with second blades and a filler area 310, the filler area 310 is arranged in the central area of the second cyclone sieve plate 300, the second blades are arranged around the filler area 310, the fixed absorbent is stored in the packing region 310, which is a main absorption region, and the leaf region formed by the second plurality of leaves is enriched as a main absorption region.
The first cyclone sieve plate 200 and the second cyclone sieve plate 300 can be provided with a plurality of first cyclone sieve plates 200 and second cyclone sieve plates 300, and the specific number of the first cyclone sieve plates 200 and the second cyclone sieve plates 300 is determined according to actual conditions.
In addition, when the combined mode of more than two adjacent composite filler type cyclone sieve plates is installed, according to the rotation directions (clockwise rotation direction and anticlockwise rotation direction) of the cyclone sieve plates, the adjacent two tower plates are installed in a forward direction when the rotation directions are the same, and are installed in a reverse direction when the rotation directions are opposite, the rotation flow can be enhanced when the two tower plates are installed in the forward direction, so that the combined mode is beneficial to dust removal, and gas-liquid mixing can be enhanced when the two tower plates are installed in the reverse direction, so that the combined mode is beneficial to transport.
In the absorption dust removal tower provided by the invention, the absorbent and the flue gas in the flue gas circulation channel enter from the top of the tower body 100 and flow to the bottom of the tower body 100, so that the gas and the liquid flow from top to bottom in the tower simultaneously, the defects of gas and liquid countercurrent are effectively avoided, in addition, the first cyclone sieve plate 200 is arranged at the position close to the top of the tower body 100, under the action of centrifugal force and fluid resistance, solid particles are gradually enriched towards the tower wall due to density difference, the first cyclone sieve plate 200 is separated into a main absorption area as an auxiliary absorption area, the second cyclone sieve plate 300 is arranged at the position close to the bottom, the central area is filled with the filler, the gas and the liquid flowing down from the first cyclone sieve plate 200 are absorbed by the filler to form a main absorption area, the integration of gas absorption and dust removal is realized, the stable operation for a long time is realized, the low flux of the absorption tower in the gas and liquid countercurrent mode existing in the prior art is relieved, the flooding of the gas and the tower is easy to cause flooding, and the production efficiency is greatly influenced, the technical problem that the operation cannot be stably carried out for a long time.
On the basis of the above embodiment, in an optional implementation manner, the absorption dust removal tower provided in this embodiment further includes a tower kettle 400; a solid particle collecting area 410 is formed in the tower kettle 400, the tower kettle 400 is connected with the bottom of the tower body 100, and solid particles in the flue gas circulation channel can enter the solid particle collecting area 410.
Specifically, the particles falling from the first cyclone sieve plate 200 are driven by the vane area of the second cyclone sieve plate 300 to continuously adhere to the wall and fall to the tower kettle 400 in a cyclone manner, and are collected by the solid particle collecting area 410 in the tower kettle 400.
In an alternative embodiment, a liquid storage zone 420 is formed within the column bottom 400; the tower 400 has a wire mesh therein, which divides the inner cavity of the tower 400 into a solid particle collection area 410 and a liquid storage area 420.
Specifically, a wire mesh is disposed in the tower kettle 400, two ends of the wire mesh are respectively connected with the inner wall of the tower kettle 400, and are fixed in the tower kettle 400 to divide the tower kettle 400 into a solid particle collecting region 410 and a liquid storage region 420, and the gas and liquid in the tower body 100 flow in parallel to the tower kettle 400 from top to bottom.
In an alternative embodiment, the bottom of the liquid storage region 420 is provided with a liquid discharge port 421.
Specifically, the liquid outlet 421 is formed in the bottom of the liquid storage region 420, and the absorbent in the liquid storage region 420 is discharged by opening the liquid outlet 421.
In an alternative embodiment, the absorption dusting tower further comprises a liquid inlet conduit 422; the liquid inlet line 422 communicates with the liquid storage region 420.
Specifically, the fluid inlet line 422 extends into the fluid storage region 420, and the absorbent enters the fluid storage region 420 through the fluid inlet line 422.
In an alternative embodiment, the absorption dusting tower comprises a liquid spray member 500; the liquid spray member 500 is disposed at the top in the tower body 100, and the liquid spray member 500 communicates with the liquid storage region 420 through the liquid circulation line 600.
Specifically, a liquid spraying member 500 is installed at the top in the tower body 100, the liquid spraying member 500 is specifically set as a liquid distributor, the absorbent is uniformly sprayed onto the first cyclone sieve plate 200 in the tower body 100 through the liquid spraying member 500, and the first cyclone sieve plate 200 and the second cyclone sieve plate 300 are utilized for redistribution.
The liquid spray member 500 may be a calandria type, a nozzle type, or a shower head type.
In an alternative embodiment, the absorption dusting tower further comprises a water pump 610; the water pump 610 is disposed on the liquid circulation line 600.
Specifically, one end of the liquid circulation line 600 is connected to the liquid spray member 500, the other end of the liquid circulation line 600 is connected to the water pump 610, the water pump 610 is connected to the liquid storage region 420 through a pipe, and the absorbent in the liquid storage region 420 is conveyed into the liquid spray member 500 by the suction force generated by the water pump 610.
In an alternative embodiment, the absorption dust removal tower further comprises a gas outlet conduit 700; the gas outlet pipeline 700 is connected with the tower body 100, a gas-liquid separation demister 710 is arranged in the tower body 100, and the gas-liquid separation demister 710 is arranged at the connecting position of the gas outlet pipeline 700 and the tower body 100.
Specifically, a gas outlet pipeline 700 is arranged at the bottom of the tower body 100, gas in the tower body 100 can be conveyed to the outside along the gas outlet pipeline 700, and a gas-liquid separation demister 710 is arranged at the connection between the gas outlet pipeline 700 and the tower body 100, so that liquid in the tower body 100 is intercepted in the tower body 100.
In an alternative embodiment, the absorption dust removal tower further comprises a gas transfer line 800; one end of the gas transmission pipeline 800 is connected with the top of the tower body 100, and the other end of the gas transmission pipeline 800 is connected with the induced draft fan 810.
Specifically, the gas transmission pipeline 800 is disposed between the tower body 100 and the induced draft fan 810, and the induced draft fan 810 transmits the flue gas into the tower body 100 along the gas transmission pipeline 800.
The dust removal method of the absorption dust removal tower provided by the embodiment comprises the following steps: the absorbent is injected into the liquid storage area 420, the absorbent in the liquid storage area 420 enters the tower body 100 through the liquid circulation pipeline 600 by the water pump 610, and is uniformly sprayed onto the first cyclone sieve plate 200 by the liquid distributor, and the absorbent in the tower body 100 enters the liquid storage area 420 after being distributed by the first cyclone sieve plate 200 and the second cyclone sieve plate 300, so that the internal circulation of the absorbent is formed; the induced draft fan 810 is turned on, the flue gas enters the tower body 100 through the gas conveying pipeline 800, and the gas in the tower body 100 is discharged through the gas outlet pipeline 700.
Specifically, before the combined installation of the first cyclone sieve plate 200 and the second cyclone sieve plate 300 in the tower body 100, the specific number of the first cyclone sieve plate 200 and the second cyclone sieve plate 300 is determined according to the treatment capacity of flue gas, a sufficient amount of new absorbent is injected into the liquid storage area 420, when the absorption tower works, the new absorbent in the liquid storage area 420 enters the tower lifter through the liquid circulation pipeline 600 through the water pump 610, the absorbent is uniformly sprayed to the first cyclone sieve plate 200 through the liquid spraying component 500, and after the redistribution of the first cyclone sieve plate 200 and the second cyclone sieve plate 300, the absorbent flows to the tower kettle 400 to form circulation.
When the absorbent in the tower 400 reaches three quarters of the tower 400, the valve of the liquid outlet 421 at the bottom of the tower 400 is opened to keep the liquid level in the tower 400 constant. After the absorbent circulates stably in the absorption tower, the induced draft fan 810 is turned on, the flue gas in the gas conveying pipeline 800 and the absorbent flow in parallel through the tower body 100, and the flue gas and the absorbent are discharged through the gas outlet pipeline 700 at the bottom of the tower body 100.
At this time, the dedusting absorption tower normally operates, the tower plates enrich and separate solid particles in the flue gas while the absorbent in the tower body 100 absorbs the solid particles, when the absorption of the absorption tower is finished or the solid particles are collected excessively, the induced draft fan 810 is firstly turned off, and after the absorbent continuously and circularly operates in the tower body 100 for 3 minutes, the water pump 610 is turned off to ensure the full absorption of the flue gas, and meanwhile, the liquid discharge port 421 is fully opened to fully discharge the waste liquid.
According to the absorption dust removal tower and the dust removal method thereof provided by the embodiment, the absorption efficiency can reach 95-99%, the dust removal efficiency can reach 90%, the liquid-gas ratio can reach 20L/m-3, and compared with a gas-liquid countercurrent absorption dust removal tower, the tower diameter size is reduced by 30-60%, and the tower height is reduced by 20-50%. Compared with the traditional process technology, the equipment cost is saved by 10-30%.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An absorption dust removal tower for flue gas treatment equipment, comprising: the device comprises a tower body (100), a first cyclone sieve plate (200) and a second cyclone sieve plate (300);
the tower body (100) is provided with a flue gas circulation channel, the absorbent and the flue gas in the flue gas circulation channel flow to the bottom of the tower body (100) from the top of the tower body (100), and the first cyclone sieve plate (200) and the second cyclone sieve plate (300) are sequentially arranged along the flow direction of the flue gas in the flue gas circulation channel;
the first cyclone sieve plate (200) is provided with first blades (210), the first blades (210) are used for enabling solid particles in the flue gas to move along the direction of the inner wall of the tower body (100), the second cyclone sieve plate (300) is provided with a packing area (310) used for absorbing gas liquid, and the gas liquid in the flue gas circulation channel passes through the first cyclone sieve plate (200) and flows to the packing area (310).
2. The absorption dust removal tower according to claim 1,
the absorption dust removal tower also comprises a tower kettle (400);
the tower is characterized in that a solid particle collecting region (410) is formed in the tower kettle (400), the tower kettle (400) is connected with the bottom of the tower body (100), and solid particles in the flue gas circulation channel can enter the solid particle collecting region (410).
3. The absorption dust removal tower according to claim 2,
a liquid storage area (420) is formed in the tower kettle (400);
the tower bottom (400) is internally provided with a wire mesh which divides the inner cavity of the tower bottom (400) into the solid particle collecting area (410) and the liquid storage area (420).
4. The absorption dust removal tower according to claim 3,
the bottom of the liquid storage area (420) is provided with a liquid discharge port (421).
5. The absorption dust removal tower according to claim 3,
the absorption dust removal tower also comprises a liquid inlet pipeline (422);
the liquid inlet line (422) communicates with the liquid storage area (420).
6. The absorption dust removal tower according to claim 3,
the absorption dust removal tower comprises a liquid spraying component (500);
the liquid spraying component (500) is arranged at the top in the tower body (100), and the liquid spraying component (500) is communicated with the liquid storage area (420) through a liquid circulating pipeline (600).
7. The absorption dust removal tower according to claim 6,
the absorption dust removal tower further comprises a water pump (610);
the water pump (610) is arranged on the liquid circulation pipeline (600).
8. The absorption dust removal tower according to claim 1,
the absorption dust removal tower further comprises a gas outlet pipeline (700);
the gas outlet pipeline (700) is connected with the tower body (100), a gas-liquid separation demister (710) is arranged in the tower body (100), and the gas-liquid separation demister (710) is arranged at the connecting position of the gas outlet pipeline (700) and the tower body (100).
9. The absorption dust removal tower according to claim 1,
the absorption dust removal tower further comprises a gas conveying pipeline (800);
one end of the gas conveying pipeline (800) is connected with the top of the tower body (100), and the other end of the gas conveying pipeline (800) is connected with the induced draft fan (810).
10. A dust removal method based on the absorption dust removal tower as claimed in any one of claims 1 to 9, characterized by comprising the following steps:
the absorbent is injected into the liquid storage area (420), the absorbent in the liquid storage area (420) enters the tower body (100) through the liquid circulation pipeline (600) through the water pump (610), and is uniformly sprayed onto the first cyclone sieve plate (200) through the liquid distributor, and the absorbent in the tower body (100) enters the liquid storage area (420) after being distributed through the first cyclone sieve plate (200) and the second cyclone sieve plate (300), so that the internal circulation of the absorbent is formed;
and (3) opening the induced draft fan (810), enabling the flue gas to enter the tower body (100) through the gas conveying pipeline (800), and discharging the gas in the tower body (100) through the gas outlet pipeline (700).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203389492U (en) * | 2013-07-30 | 2014-01-15 | 杭州新安江工业泵有限公司 | Waste gas absorption tower |
| CN106268187A (en) * | 2016-08-26 | 2017-01-04 | 昆山工统环保科技有限公司 | A kind of sieve plate eddy flow tower |
| CN106345391A (en) * | 2016-11-17 | 2017-01-25 | 河北工业大学 | Composite three-dimensional cyclone sieve plate and composite sieve plate tower |
| US20170333830A1 (en) * | 2015-01-23 | 2017-11-23 | Beijing Boyuan Hengsheng High-Technology Co., Ltd | Method for waste gas dedusting and dedusting agent |
| CN216498460U (en) * | 2021-12-29 | 2022-05-13 | 河北工业大学 | Absorption dust removal tower |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203389492U (en) * | 2013-07-30 | 2014-01-15 | 杭州新安江工业泵有限公司 | Waste gas absorption tower |
| US20170333830A1 (en) * | 2015-01-23 | 2017-11-23 | Beijing Boyuan Hengsheng High-Technology Co., Ltd | Method for waste gas dedusting and dedusting agent |
| CN106268187A (en) * | 2016-08-26 | 2017-01-04 | 昆山工统环保科技有限公司 | A kind of sieve plate eddy flow tower |
| CN106345391A (en) * | 2016-11-17 | 2017-01-25 | 河北工业大学 | Composite three-dimensional cyclone sieve plate and composite sieve plate tower |
| CN216498460U (en) * | 2021-12-29 | 2022-05-13 | 河北工业大学 | Absorption dust removal tower |
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| CN114146538B (en) | 2024-08-13 |
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