CN107243206A - Flue gas washing tower - Google Patents
Flue gas washing tower Download PDFInfo
- Publication number
- CN107243206A CN107243206A CN201710599204.5A CN201710599204A CN107243206A CN 107243206 A CN107243206 A CN 107243206A CN 201710599204 A CN201710599204 A CN 201710599204A CN 107243206 A CN107243206 A CN 107243206A
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- China
- Prior art keywords
- flue gas
- tower
- washing
- flow
- shell
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/14—Packed scrubbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
Abstract
The present invention is a kind of flue gas washing tower, including inner chamber axially through washing shell, the top connection for washing shell sets chimney, the bottom connection of washing shell sets the leakage fluid dram that can be opened and closed, the smoke feed mouthful of inner chamber insertion is tangentially provided with and communicated with the side wall for washing shell, wash in shell, and tower tray and packing layer are disposed with from bottom to top positioned at the top of smoke feed mouthful, flow blocking structure is fixedly installed in washing shell, the side wall of flow blocking structure is oppositely arranged with smoke feed mouthful, it is fixed on being tightly connected on the inwall of washing shell at the top of flow blocking structure, the smoke ventilator for allowing flue gas to pass through from bottom to top is provided with flow blocking structure.The problems such as phenomenon that the equipment overcomes that gas-liquid separation efficiency present in prior art is low, scrubbing tower periphery " is rained ", the flue gas washing tower is simple in construction and can realize efficiently separating for removing agent solution in flue gas, is conducive to improving operating efficiency and the feature of environmental protection.
Description
Technical field
The present invention relates to chemical separating equipment technical field, more particularly to a kind of flue gas washing tower.
Background technology
For meet the requirement of environmental protection, environmental pollution is reduced, the flue gas for generation of being burnt in industry is discharged into air, mesh again after need to purifying
Preceding industrial extensive use wet type flue gas desulphurization technology is to spray the aqueous solution containing finite concentration scavenger after nozzle atomization
Enter flue to be clean, removing agent solution is vigorously mixed with flue gas flow through venturi to be clean and completes to purify flue gas
Afterwards, tangentially sprayed into by scrubbing tower smoke feed mouthful 93 and gas-liquid eddy flow centrifugation is carried out in scrubbing tower 9, what cyclonic separation was got off
Scavenger drop is discharged by the leakage fluid dram 92 of wash tower bottoms, the small particle scavenger drop not separated from flue gas carry secretly to
The cylindrical pad layer 95 that upper flowing enters scrubbing tower upper end through tower tray 94 proceeds gas-liquid coarse separation, coarse separation separation
The removing agent solution gone out flows downward and discharges scrubbing tower, the scavenger liquid that coarse separation is not isolated through the descending liquid slotted eye on tower tray
Drip to be carried secretly to continue up by flue gas and flow the chimney 91 of scrubbed tower upper end and be discharged into air, so as to complete the wet-process clean to flue gas
Change.Figure 15 is structure of column scrubber sketch widely used in industry at present.
Contain in the problem of existing flue gas washing tower generally existing gas-liquid separation efficiency is low, the flue gas discharged by chimney
Concentration of liquid drops is high, serious " raining " phenomenon is generated on flue gas washing tower periphery, it is molten that this not only wastes substantial amounts of scavenger
Liquid, and in the winter time, many flue gas washing tower surrounding grounds in the north generate heavy ice phenomenon, have had a strong impact on flue gas and have washed
Wash the operation and operation of tower.
There are some technologies for being directed to gas-liquid separation, such as patent " gas-liquid separator " (publication number in the prior art：
CN103977665 B) add silk screen to separate gas-liquid using the cyclone separator with spiral plate；" gas-liquid separation is filled patent
Put " (publication number：CN103301958 B) gas-liquid is centrifuged using inner/outer tube combination guide vane；A kind of patent " gas
Liquid/gas separator " (publication number：The B of CN 104368214) coarse separation is carried out to gas-liquid using filler mode.But it is due to existing cigarette
The design feature of gas wash tower itself, these current patents are also difficult to directly apply on flue gas washing tower.
Thus, the present inventor relies on experience and the practice for being engaged in relevant industries for many years, proposes a kind of flue gas washing tower,
To overcome the defect of prior art.
The content of the invention
It is an object of the invention to provide a kind of flue gas washing tower, gas-liquid separation present in prior art is overcome to imitate
The problems such as phenomenon that rate is low, scrubbing tower periphery " is rained ", the flue gas washing tower is simple in construction and can realize scavenger in flue gas
Efficiently separating for solution, is conducive to improving operating efficiency and the feature of environmental protection.
The object of the present invention is achieved like this, a kind of flue gas washing tower, including inner chamber axially through scrubbing tower
Shell, the top connection of the washing shell sets chimney, and the bottom connection of the washing shell sets the row that can be opened and closed
Tangentially it is provided with and communicated with liquid mouthful, the side wall of the washing shell outside the smoke feed mouthful of inner chamber insertion, the scrubbing tower
Tower tray and packing layer, the washing shell are disposed with from bottom to top in shell and positioned at the top of the smoke feed mouthful
Flow blocking structure is inside fixedly installed, side wall and the smoke feed mouthful of the flow blocking structure are in interval and be oppositely arranged, described
On the washing shell is fixed at the top of flow blocking structure inwall with being tightly connected, permission is provided with the flow blocking structure
The smoke ventilator that flue gas passes through from bottom to top.
The present invention a better embodiment in, the flow blocking structure include inner chamber axially through flow isolating cylinder, it is described
The side wall of flow isolating cylinder is with the smoke feed mouthful in being spaced and being oppositely arranged, and the inner chamber of the flow isolating cylinder constitutes the flue gas and led to
Hole；A flow blocking ring cowling plate, the lateral wall of the flow blocking ring cowling plate are fixed with the top exterior walls of the flow isolating cylinder with being tightly connected
On be fixed on the washing shell above the smoke feed mouthful inwall with being tightly connected.
In the better embodiment of the present invention, the flow isolating cylinder be inner chamber axially through the sealing of, side wall and diameter to
Under tapered the first taper cone barrel.
In the better embodiment of the present invention, the inner cavity top diameter dimension of first taper cone barrel is the washing
0.6~0.9 times of the intracavity diameter size of shell, the intracavity bottom diameter dimension of first taper cone barrel is the scrubbing tower
0.4~0.7 times of the intracavity diameter size of shell, the cone angle of first taper cone barrel is 20 °~60 °.
The present invention a better embodiment in, the flow isolating cylinder be inner chamber axially through and diameter downwards it is tapered
It is arranged at intervals with multiple long permeable slots on second taper cone barrel, the side wall of second taper cone barrel, each long permeable slot is along described second
The generatrix direction of taper cone barrel is set, and the opening direction of each long permeable slot and the airintake direction of the smoke feed mouthful are runed counter to and set
Put.
In the better embodiment of the present invention, the inner cavity top diameter dimension of second taper cone barrel is the washing
0.6~0.9 times of the intracavity diameter size of shell, the intracavity bottom diameter dimension of second taper cone barrel is the scrubbing tower
0.1~0.4 times of the intracavity diameter size of shell, the area of passage sum of each long permeable slot is interior with the washing shell
The ratio between chamber cross-sectional area is 0.16~0.5.
The present invention a better embodiment in, the flow isolating cylinder be inner chamber axially through cylindrical drum.
In the better embodiment of the present invention, the intracavity diameter size of the cylindrical drum is the washing shell
0.4~0.7 times of intracavity diameter size.
In the better embodiment of the present invention, turbulent-flow-prevention cover plate, the interference guard are provided with the washing shell
Flow cover plate to be located between the flow blocking structure and scavenger liquid level of solution, outside the side wall and the scrubbing tower of the turbulent-flow-prevention cover plate
The inwall of shell is fixedly connected, be provided with the turbulent-flow-prevention cover plate axially through exhaust gases passes.
In the better embodiment of the present invention, the turbulent-flow-prevention cover plate is upward the first tapered cone-plate of diameter, institute
State it is circumferentially spaced on the side wall of the first cone-plate be provided with arc through groove, multiple arc through grooves constitute the exhaust gases passes, described
The sidewall bottom of first cone-plate is fixedly connected on the inwall of the washing shell.
In the better embodiment of the present invention, the turbulent-flow-prevention cover plate is downward the second tapered cone-plate of diameter, institute
The center for stating the second cone-plate sets the circle open-work of insertion, and the round open-work constitutes the exhaust gases passes, second cone-plate
Top side wall is fixedly connected on the inwall of the washing shell.
In the better embodiment of the present invention, described filler layer is cone tower packing structure, the cone tower packing structure
Top be provided with the diameter tapered outer vertex of a cone upwards, it is tapered upwards that the bottom up of the cone tower packing structure is provided with diameter
Inner cone bottom, the sidewall bottom of the cone tower packing structure is fixedly connected on the inwall of the washing shell.
From the above mentioned, the flue gas washing tower that the present invention is provided has the advantages that：
(1) the flue gas washing tower that the present invention is provided utilizes smoke feed without the additional special gas-liquid separator of connection
The flow blocking structure set at mouthful reduces the initial tangential actual internal area of the flue gas entered in flue gas washing tower, increases flue gas
Initial tangential velocity and drop centrifugal force, effectively improve gas-liquid separation efficiency；
(2) the flow blocking structure in the flue gas washing tower that the present invention is provided makes flue gas tangentially carry out high-speed rotational downwards
Flowing is centrifuged, the preliminary gas-liquid separation of flue gas is realized, the flue gas after first separation is flowed up through smoke ventilator, through filling out
The bed of material realizes the secondary gas-liquid separation of flue gas, effectively scavenger droplet content in reduction flue gas, improves the feature of environmental protection；
(3) flow blocking ring cowling plate is set to constitute in the flow blocking structure in the flue gas washing tower that the present invention is provided, flow blocking ring
Cover plate carries out backstop to the flue gas entered from smoke feed mouthful in top, efficiently reduces upward " short-circuit flow " of flue gas, reduces
The direct entrainment of scavenger drop without cyclonic separation, the flue gas that eddy flow centrifuges flowing is carried out while can increase
Amount, improves the tangential velocity and gas-liquid separative efficiency of flue gas；
(4) in the flue gas washing tower that the present invention is provided, turbulent-flow-prevention cover plate can prevent tangentially downward eddy flow from flowing to
Reentrainment is carried out to the removing agent solution separated when the flue gas of scavenger liquid level of solution backflows upwards, reduces and enters
The scavenger content liquid of the packing layer of shell upper end is washed, the gas-liquid separation efficiency of packing layer is improved；
(5) in the flue gas washing tower that the present invention is provided, packing layer is arranged to bore tower packing structure, can increase flue gas and exist
Circulation area in packing layer, reduces gas velocity of the flue gas in packing layer, improves gas-liquid aggregation separative efficiency；It can make in filler simultaneously
The removing agent solution that coarse separation goes out in layer is first downwardly towards close to scrubbing tower outer casing inner wall along the inner cone bottom of cone tower packing structure
Low gas velocity area, the descending liquid slotted eye discharge washing shell that flowing is fallen on tower tray still further below reduced in washing shell to upper
The flue gas of flowing makes de- in flue gas to the entrainment again up of the scavenger drop gone out by cone tower packing structure coarse separation
Except agent droplet content is further reduced, be conducive to improving the feature of environmental protection；
(6) the flue gas washing tower that the present invention is provided is simple in construction, beneficial to promoting the use of.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：For the structural representation of the embodiment one of the flue gas washing tower of the present invention；
Fig. 2：For the structural representation of the embodiment two of the flue gas washing tower of the present invention；
Fig. 3：For the structural representation of the embodiment three of the flue gas washing tower of the present invention；
Fig. 4：For the structural representation of the example IV of the flue gas washing tower of the present invention；
Fig. 5：For the structural representation of the embodiment five of the flue gas washing tower of the present invention；
Fig. 6：For the top view at the smoke feed mouthful of the flue gas washing tower of the present invention；
Fig. 7：Schematic diagram when for the cross section of the smoke feed mouthful of the present invention being circle；
Fig. 8：Schematic diagram when for the cross section of the smoke feed mouthful of the present invention being rectangle；
Fig. 9：For the front view of the first cone-plate of the present invention；
Figure 10：For the top view of the first cone-plate of the present invention；
Figure 11：For the front view of the second cone-plate of the present invention；
Figure 12：For the top view of the second cone-plate of the present invention；
Figure 13：For the schematic diagram of the first taper cone barrel of the present invention；
Figure 14：For the schematic diagram of the cylindrical drum of the present invention.
Figure 15：For the schematic diagram of the scrubbing tower of prior art.
In figure：
100th, flue gas washing tower；
1st, shell is washed；
11st, chimney；
12nd, leakage fluid dram；
13rd, smoke feed mouthful；
14th, tower tray；141st, descending liquid slotted eye；
15th, packing layer；
151st, tower packing structure is bored；1511st, the outer vertex of a cone；1512nd, inner cone bottom；
152nd, cylindrical pad structure；
2nd, flow blocking structure；
21st, flow isolating cylinder；
211st, the first taper cone barrel；
212nd, the second taper cone barrel；2121st, long permeable slot；
213rd, cylindrical drum；
22nd, flow blocking ring cowling plate；
3rd, turbulent-flow-prevention cover plate；
31st, the first cone-plate；311st, arc through groove；
32nd, the second cone-plate；321st, circle open-work；
5th, scavenger liquid level of solution；
9th, scrubbing tower；91st, chimney；92nd, leakage fluid dram；93rd, smoke feed mouthful；94th, tower tray；95th, cylindrical pad layer.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now control illustrates this hair
Bright embodiment.
As shown in Fig. 1 to Figure 14, the present invention provides a kind of flue gas washing tower 100, including inner chamber axially through wash
Shell 1 is washed, the top connection of washing shell 1 sets chimney 11, and the bottom connection of washing shell 1 sets the row that can be opened and closed
(the smoke feed mouthful 13 of smoke feed mouthful 13 of inner chamber insertion is tangentially provided with and communicated with liquid mouthful 12, the side wall for washing shell 1
The entrance of setting form and cyclone separator set form similar, flue gas tangentially into washing shell 1 inner chamber, favorably
Carry out tangential swirl in it), smoke feed mouthfuls 13 can with flue (prior art, figure not shown in) connection, outside scrubbing tower
Tower tray 14 (prior art, the effect of tower tray 14 are disposed with from bottom to top in shell 1 and positioned at the top of smoke feed mouthful 13
Mainly it is uniformly distributed the gas-liquid two-phase into packing layer 15, is easy to packing layer 15 to carry out gas-liquid separation) and packing layer 15 is (now
Have a technology, gas-liquid separation in flue gas washing tower can be realized by constituting the filler of packing layer), being provided with tower tray 14 can be to outside scrubbing tower
The descending liquid slotted eye 141 of the outside discharge opeing of shell 1；Be fixedly installed flow blocking structure 2 in washing shell 1, the side wall of flow blocking structure 2 with
Smoke feed mouthful 13 is in interval and is oppositely arranged, and the inwall of washing shell 1 is fixed at the top of flow blocking structure 2 with being tightly connected
On, the smoke ventilator for allowing flue gas to pass through from bottom to top is provided with flow blocking structure 2.The flue gas washing tower 100 of the present invention
Without the additional special gas-liquid separator of connection, reduced using the flow blocking structure 2 set at smoke feed mouthful 13 and enter flue gas washing
The initial tangential actual internal area of flue gas in tower, increases the initial tangential velocity and drop centrifugal force of flue gas, effectively improves
The efficiency of gas-liquid separation；Flow blocking structure 2 in the flue gas washing tower 100 of the present invention makes flue gas tangentially carry out downwards at a high speed
Eddy flow centrifuges flowing, realizes the preliminary gas-liquid separation of flue gas, and the flue gas after first separation is flowed up through smoke ventilator,
The secondary gas-liquid separation of flue gas is realized through packing layer 15, effectively scavenger droplet content in reduction flue gas, improve the feature of environmental protection；This hair
Bright flue gas washing tower 100 it is simple in construction, beneficial to promoting the use of.
Further, as shown in Fig. 1 to Fig. 5, Figure 13, Figure 14, flow blocking structure 2 include inner chamber axially through flow isolating cylinder 21,
The side wall of flow isolating cylinder 21 is with smoke feed mouthful 13 in being spaced and being oppositely arranged, and the inner chamber of flow isolating cylinder 21 constitutes foregoing flue gas and led to
Hole；A flow blocking ring cowling plate 22, the lateral wall energy of flow blocking ring cowling plate 22 are fixed with the top exterior walls of flow isolating cylinder 21 with being tightly connected
It is fixed on being tightly connected on the inwall of the washing shell 1 of the top of smoke feed mouthful 13, one in the present invention is specific real
Apply in example, flow blocking ring cowling plate 22 and the distance of the cavity heights center of smoke feed mouthful 13 are higher than the inner chamber of smoke feed mouthful 13
The half for spending size is more 0.1~0.5 meter.The effect of flow isolating cylinder 21 is to reduce the initial of flue gas entered from smoke feed mouthful 13 to cut
To circulation area, increase the initial tangential velocity and drop centrifugal force of flue gas, improve gas-liquid separation efficiency；Flow blocking ring cowling plate 22 is close
Envelope connection ground is fixed between the inwall of the top of flow isolating cylinder 21 and washing shell 1, to the flue gas entered from smoke feed mouthful 13
Backstop is carried out in top, upward " short-circuit flow " of flue gas is efficiently reduced, the straight of the scavenger drop without cyclonic separation is reduced
Entrainment is connect, the exhaust gas volumn that eddy flow centrifuges flowing is carried out while can increase, the tangential velocity and gas-liquid point of flue gas is improved
From efficiency；Flue gas constitutes between the outer wall of flow isolating cylinder 21 and the inwall of washing shell 1 and tangentially carries out height in annular space downwards
Fast eddy flow centrifuges flowing, in high-speed rotational centrifuges flow process, under partial removal agent drop is separated from flue gas
OK, the preliminary gas-liquid separation of flue gas is realized.
Further, as shown in Figure 1 to Figure 4, shown in Figure 13, flow isolating cylinder 21 can be inner chamber axially through, side wall sealing and diameter
Downward the first tapered taper cone barrel 211, the inner chamber of the first taper cone barrel 211 constitutes foregoing smoke ventilator.In the tool of the present invention
In body embodiment, the height dimension H1 of the first taper cone barrel 211 is bigger 0.1~0.5 meter than the cavity heights size of smoke feed mouthful 13,
The side wall and smoke feed mouthful 13 for ensureing the first taper cone barrel 211 are oppositely arranged, it is ensured that flue gas can tangentially carry out height downwards after entering
Fast eddy flow centrifuges flowing, is rather than directly to outflow, the specific sizes of height dimension H1 of the first taper cone barrel 211 are according to life
Production it needs to be determined that；The inner cavity top diameter dimension D1 of first taper cone barrel 211 is the 0.6 of the intracavity diameter dimension D of washing shell 1
~0.9 times, the intracavity bottom diameter dimension D2 of the first taper cone barrel 211 for the intracavity diameter dimension D of washing shell 1 0.4~
0.7 times, the cone angle 1 of the first taper cone barrel 211 is 20 °~60 °.
Further, as shown in figure 5, flow isolating cylinder 21 can be inner chamber axially through and diameter tapered the second circular cone downwards
Cylinder 212, the inner chamber of the second taper cone barrel 212 constitute be arranged at intervals with foregoing smoke ventilator, the side wall of the second taper cone barrel 212 it is many
Individual long permeable slot 2121, generatrix direction of each long permeable slot 2121 along the second taper cone barrel 212 is set, the opening direction of each long permeable slot 2121
Setting is runed counter to the airintake direction of smoke feed mouthful 13, the opening direction of each long permeable slot 2121 can prevent flue gas from smoke feed mouthful
13 constitute " short-circuit flow " flows directly up.The flue gas entered from smoke feed mouthful 13, in the outer wall and scrubbing tower of flow isolating cylinder 21
High-speed rotational is tangentially carried out in the annular space constituted between the inwall of shell 1 downwards and centrifuges flowing, the gas-liquid of flue gas is realized
Initial gross separation；When the downward high-speed rotational of flue gas flows to 21 lower section certain position of flow isolating cylinder, it can carry out turning back to forward spin flow and (be somebody's turn to do
Eddy flow principle of the principle with cyclone separator), the flue gas eddy flow turned back a upwards part by the inner chamber of the second taper cone barrel 212 to
Upper flowing a, part is flowed up by each eddy flow of long permeable slot 2121.Long permeable slot 2121 is opened up on the side wall of second taper cone barrel 212
Purpose have：(1) opening direction of each long permeable slot 2121 can prevent flue gas from smoke feed mouthfuls 13 constitute " short-circuit flow " directly to
On flow to packing layer 15；(2) the upward flue gas of eddy flow is when by each long permeable slot 2121, and due to eddy flow inertia, gas phase enters
More, liquid phase enters less, further carries out gas-liquid separation, improves gas-liquid separation efficiency；(3) each long permeable slot 2121 can increase
The circulation area of the upward flue gas of eddy flow, reduces the pressure drop of the inner chamber of the second taper cone barrel 212.
In the specific embodiment of the present invention, the height dimension H2 of the second taper cone barrel 212 is than in smoke feed mouthful 13
Chamber height dimension is big 0.1~0.5 meter, it is ensured that the side wall of the second taper cone barrel 212 is oppositely arranged with smoke feed mouthful 13, it is ensured that flue gas
High-speed rotational can tangentially be carried out downwards after and centrifuge flowing, outflow, the height of the second taper cone barrel 212 is rather than directly to
Spend the specific sizes of size H2 according to production it needs to be determined that；The inner cavity top diameter dimension D7 of second taper cone barrel 212 is outside scrubbing tower
0.6~0.9 times of the intracavity diameter dimension D of shell 1, the intracavity bottom diameter dimension D3 of the second taper cone barrel 212 is washing shell 1
0.1~0.4 times of intracavity diameter dimension D, the area of passage sum of each long permeable slot 2121 and wash shell 1 inner chamber it is transversal
Area ratio is 0.16~0.5.
Further, as shown in figure 14, flow isolating cylinder 21 can also be inner chamber axially through cylindrical drum 213, cylindrical drum 213
Inner chamber constitutes foregoing smoke ventilator.In the specific embodiment of the present invention, the height dimension H3 of cylindrical drum 213 enters than flue gas
Greatly 0.1~0.5 meter of the cavity heights size of material mouth 13, it is ensured that the side wall of cylindrical drum 213 is oppositely arranged with smoke feed mouthful 13,
Ensure that flue gas can tangentially carry out high-speed rotational downwards and centrifuge flowing after entering, be rather than directly to outflow, cylindrical drum 213
The specific sizes of height dimension H3 according to production it needs to be determined that, the intracavity diameter dimension D 4 of cylindrical drum 213 is washing shell 1
0.4~0.7 times of intracavity diameter dimension D.
Further, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 9 to Figure 12, turbulent-flow-prevention cover plate 3 is provided with washing shell 1, is prevented
Flow-disturbing cover plate 3 is located at flow blocking structure 2, and (bottom of washing shell 1 is equipped with the removing spun off with scavenger liquid level of solution 5
Agent solution, prior art) between, the side wall of turbulent-flow-prevention cover plate 3 is fixedly connected with washing the inwall of shell 1, turbulent-flow-prevention cover plate 3
On be provided with axially through exhaust gases passes.Turbulent-flow-prevention cover plate 3 can prevent tangentially downward eddy flow from flowing to removing agent solution liquid
Reentrainment is carried out to the removing agent solution separated when the flue gas in face 5 backflows upwards, reduces and enters washing shell 1
The scavenger content liquid of the packing layer 15 of upper end, improves the gas-liquid separation efficiency of packing layer 15.
Further, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 9, Figure 10, turbulent-flow-prevention cover plate 3 can be diameter upwards tapered first
Circumferentially spaced on cone-plate 31, the side wall of the first cone-plate 31 to be provided with arc through groove 311, multiple arc through grooves 311 constitute foregoing cigarette
Gas passage, the sidewall bottom of the first cone-plate 31 is fixedly connected on the inwall of washing shell 1.In the specific implementation of the present invention
In example, the cone angle 2 of the first cone-plate 31 is the location of radially inner side of arc through groove 311 on 30 °~150 °, the first cone-plate 31
Diameter dimension D5 be 0.3D~0.9D.
Further, as shown in Figure 11, Figure 12, turbulent-flow-prevention cover plate can also be downward the second tapered cone-plate 32 of diameter, the
The center of two cone-plates 32 sets the circle open-work 321 of insertion, and circle open-work 321 constitutes foregoing smoke passage, the side of the second cone-plate 32
On the inwall that washing shell 1 is fixedly connected at the top of wall.In the specific embodiment of the present invention, the cone angle of the second cone-plate 32
α 3 is 30 °~150 °, and the diameter dimension D6 of circle open-work 321 is 0.3D~0.9D.
Further, as shown in Fig. 2, Fig. 4, Fig. 5, packing layer 15 is the cone tower packing structure 151 being made up of filler, and cone tower is filled out
The top of material structure 151 is provided with the upward tapered outer vertex of a cone 1511 of diameter, and the bottom up of cone tower packing structure 151 is provided with
The upward tapered inner cone bottom 1512 of diameter, the sidewall bottom of cone tower packing structure 151 is fixedly connected on the inwall of washing shell 1
On.Boring tower packing structure 151 is used for the gas-liquid coarse separation of flue gas, and its purpose one is the circulation for increasing flue gas in packing layer 15
Area, reduces gas velocity of the flue gas in packing layer 15, improves gas-liquid aggregation separative efficiency；Its purpose two is to make to gather in packing layer 15
The removing agent solution isolated is tied first to be downwardly towards in washing shell 1 along the inner cone bottom 1512 of cone tower packing structure 151
Low gas velocity area (prior art, the natural phenomena when formation in low gas velocity area is gas flowing of wall.Because of internal face effect, gas
Relatively low in the region gas velocity near inwall during flowing, the gas velocity in the center of washing shell 1 inner chamber is higher, internal face
Locate as low gas velocity area), descending liquid slotted eye 141 (prior art) the discharge washing shell 1 that flowing is fallen on tower tray 14 still further below subtracts
Less in washing shell 1 flue gas that flows up to the scavenger drop that is gone out by the coarse separation of cone tower packing structure 151 again
Secondary upward entrainment, makes the scavenger droplet content in flue gas further reduce, and is conducive to improving the feature of environmental protection.In the tool of the present invention
In body embodiment, the cone angle 4 of the outer vertex of a cone 1511 is 40 °~120 °, and the height h of cone tower packing structure 151 is 0.5~2.5 meter.
Further, in the specific embodiment of the present invention, the intracavity diameter dimension D of washing shell 1 is 2.0~10.0
The average gas velocity in flue gas section in rice, washing shell 1 is 0.5m/s~3.0m/s；The quantity of smoke feed mouthful 13 is 1 or 2
Individual, the cross section of smoke feed mouthful 13 is circular or rectangle, and when the cross section of smoke feed mouthful 13 is circular, flue gas enters
The intracavity diameter size d of material mouth 13 is 0.3D~0.45D, and the cavity heights size of foregoing smoke feed mouthful 13 is its diameter chi
Very little d；When the cross section of smoke feed mouthful 13 is rectangle, the inner chamber edge washing short transverse of shell 1 of smoke feed mouthful 13
Size a be 0.3D~0.6D, the inner chamber depth-width ratio of smoke feed mouthfuls 13 is 1.6~3.0, foregoing smoke feed mouthful 13 it is interior
Chamber height dimension washs the size a of the short transverse of shell 1 for its edge；Flow blocking ring cowling plate 22 is located at the upper of smoke feed mouthful 13
The distance between cavity heights center of side, flow blocking ring cowling plate 22 and smoke feed mouth 13 is 0.5d+0.1 meters~0.5d+0.5 meters
Or 0.5a+0.1 meters~0.5a+0.5 meters.
From the above mentioned, the flue gas washing tower that the present invention is provided has the advantages that：
(1) the flue gas washing tower that the present invention is provided utilizes smoke feed without the additional special gas-liquid separator of connection
The flow blocking structure set at mouthful reduces the initial tangential actual internal area of the flue gas entered in flue gas washing tower, increases flue gas
Initial tangential velocity and drop centrifugal force, effectively improve gas-liquid separation efficiency；
(2) the flow blocking structure in the flue gas washing tower that the present invention is provided makes flue gas tangentially carry out high-speed rotational downwards
Flowing is centrifuged, the preliminary gas-liquid separation of flue gas is realized, the flue gas after first separation is flowed up through smoke ventilator, through filling out
The bed of material realizes the secondary gas-liquid separation of flue gas, effectively scavenger droplet content in reduction flue gas, improves the feature of environmental protection；
(3) flow blocking ring cowling plate is set to constitute in the flow blocking structure in the flue gas washing tower that the present invention is provided, flow blocking ring
Cover plate carries out backstop to the flue gas entered from smoke feed mouthful in top, efficiently reduces upward " short-circuit flow " of flue gas, reduces
The direct entrainment of scavenger drop without cyclonic separation, the flue gas that eddy flow centrifuges flowing is carried out while can increase
Amount, improves the tangential velocity and gas-liquid separative efficiency of flue gas；
(4) in the flue gas washing tower that the present invention is provided, turbulent-flow-prevention cover plate can prevent tangentially downward eddy flow from flowing to
Reentrainment is carried out to the removing agent solution separated when the flue gas of scavenger liquid level of solution backflows upwards, reduces and enters
The scavenger content liquid of the packing layer of shell upper end is washed, the gas-liquid separation efficiency of packing layer is improved；
(5) in the flue gas washing tower that the present invention is provided, packing layer is arranged to bore tower packing structure, can increase flue gas and exist
Circulation area in packing layer, reduces gas velocity of the flue gas in packing layer, improves gas-liquid aggregation separative efficiency；It can make in filler simultaneously
The removing agent solution that coarse separation goes out in layer is first downwardly towards close to scrubbing tower outer casing inner wall along the inner cone bottom of cone tower packing structure
Low gas velocity area, the descending liquid slotted eye discharge washing shell that flowing is fallen on tower tray still further below reduced in washing shell to upper
The flue gas of flowing makes de- in flue gas to the entrainment again up of the scavenger drop gone out by cone tower packing structure coarse separation
Except agent droplet content is further reduced, be conducive to improving the feature of environmental protection；
(6) the flue gas washing tower that the present invention is provided is simple in construction, beneficial to promoting the use of.
Embodiment one
As a kind of embodiment of the present embodiment, as shown in figure 1, flue gas washing tower 100 includes scrubbing tower
Shell 1, the top connection of washing shell 1 sets chimney 11, and the bottom connection of washing shell 1 sets the leakage fluid dram that can be opened and closed
12, the smoke feed mouthfuls 13 of inner chamber insertion, smoke feed mouthful 13 and cigarette are tangentially provided with and communicated with the side wall for washing shell 1
From lower in feed channel (prior art, figure not shown in) connection, washing shell 1 and positioned at the top of smoke feed mouthful 13
On be disposed with tower tray 14 and packing layer 15, packing layer 15 selects (the existing skill of cylindrical pad structure 152 of the prior art
Art, is repeated no more), wash and flow blocking structure 2 is fixedly installed in shell 1, between flow blocking structure 2 including being in smoke feed mouthful 13
Every and the flow isolating cylinder 21 that is oppositely arranged, flow isolating cylinder 21 uses close in the first taper cone barrel 211, the top exterior walls of the first taper cone barrel 211
A flow blocking ring cowling plate 22 is fixed with to envelope connection, the lateral wall of flow blocking ring cowling plate 22 is fixed on to enter positioned at flue gas in which can be tightly connected
On the inwall of the washing shell 1 of the top of material mouth 13.
When carrying out the gas-liquid separation of flue gas using the flue gas washing tower 100 of the present embodiment, containing in flue
There is tangential inflow of the flue gas of certain scavenger solution concentration by smoke feed mouthful 13 along washing shell 1, in flow blocking ring cowling
Under the backstop action of plate 22, flue gas is constituted in annular space tangentially between the outer wall of flow isolating cylinder 21 and the inwall of washing shell 1
High-speed rotational is carried out downwards and centrifuges flowing, and in high-speed rotational centrifuges flow process, partial removal agent drop is from cigarette
Separate descending in gas, realize the preliminary gas-liquid separation of flue gas, the scavenger drop separated falls into the bottom of washing shell 1
Portion, flue gas washing tower 100 is discharged by leakage fluid dram 12.The scavenger drop do not separated carries logical secretly by up flue gas
The smoke ventilator and tower tray 14 for crossing flow blocking structure 2 enter cylindrical pad structure 152, and flue gas is in cylindrical pad structure 152
Gas-liquid coarse separation is carried out, the secondary gas-liquid separation of flue gas is realized, the scavenger drop that coarse separation goes out, which flows downward, falls into tower
Disk 14 simultaneously discharges flue gas washing tower 100 through the descending liquid slotted eye 141 on tower tray 14.Remaining seldom a part of scavenger drop
Flowing is continued up by flue gas entrainment, air is discharged into through chimney 11, completes the gas-liquid separation stream of the flue gas from flue
Journey.
From the above mentioned, the flue gas washing tower that the present invention is provided has the advantages that：
(1) the flue gas washing tower that the present invention is provided utilizes smoke feed without the additional special gas-liquid separator of connection
The flow blocking structure set at mouthful reduces the initial tangential actual internal area of the flue gas entered in flue gas washing tower, increases flue gas
Initial tangential velocity and drop centrifugal force, effectively improve gas-liquid separation efficiency；
(2) the flow blocking structure in the flue gas washing tower that the present invention is provided makes flue gas tangentially carry out high-speed rotational downwards
Flowing is centrifuged, the preliminary gas-liquid separation of flue gas is realized, the flue gas after first separation is flowed up through smoke ventilator, through filling out
The bed of material realizes the secondary gas-liquid separation of flue gas, effectively scavenger droplet content in reduction flue gas, improves the feature of environmental protection；
(3) flow blocking ring cowling plate is set to constitute in the flow blocking structure in the flue gas washing tower that the present invention is provided, flow blocking ring
Cover plate carries out backstop to the flue gas entered from smoke feed mouthful in top, efficiently reduces upward " short-circuit flow " of flue gas, reduces
The direct entrainment of scavenger drop without cyclonic separation, the flue gas that eddy flow centrifuges flowing is carried out while can increase
Amount, improves the tangential velocity and gas-liquid separative efficiency of flue gas；
(4) the flue gas washing tower that the present invention is provided is simple in construction, beneficial to promoting the use of.
Embodiment two
The present embodiment and the structure and principle of embodiment one are essentially identical, as shown in Fig. 2 its difference is that packing layer 15 is
The cone tower packing structure 151 being made up of filler, the top of cone tower packing structure 151 is provided with the upward tapered outer vertex of a cone of diameter
1511, the bottom up of cone tower packing structure 151 is provided with the upward tapered inner cone bottom 1512 of diameter, cone tower packing structure 151
Sidewall bottom be fixedly connected on washing shell 1 inwall on.The cone angle 4 of the outer vertex of a cone 1511 is 40 °~120 °, and cone tower is filled out
The height h for expecting structure 151 is 0.5~2.5 meter.
Boring tower packing structure 151 is used for the gas-liquid coarse separation of flue gas, and its purpose one is increase flue gas in packing layer 15
Circulation area, reduce flue gas packing layer 15 gas velocity, improve gas-liquid aggregation separative efficiency；Its purpose two is made in packing layer
The removing agent solution that coarse separation goes out in 15 is first downwardly towards outside scrubbing tower along the inner cone bottom 1512 of cone tower packing structure 151
The low gas velocity area of the inwall of shell 1, descending liquid slotted eye 141 (prior art) the discharge washing shell that flowing is fallen on tower tray 14 still further below
1, the flue gas that flows up in washing shell 1 is reduced to the scavenger drop that has been gone out by the coarse separation of cone tower packing structure 151
Entrainment again up, the scavenger droplet content in flue gas is further reduced, be conducive to improve the feature of environmental protection.
The other structures, operation principle of the present embodiment are identical with embodiment one, will not be repeated here.
On the basis of embodiment one, the present embodiment also has the advantages that：
In the flue gas washing tower that the present invention is provided, packing layer is arranged to bore tower packing structure, can increase flue gas and fill out
Circulation area in the bed of material, reduces gas velocity of the flue gas in packing layer, improves gas-liquid aggregation separative efficiency；It can make in packing layer simultaneously
The removing agent solution that middle coarse separation goes out first is downwardly towards close to scrubbing tower outer casing inner wall along the inner cone bottom of cone tower packing structure
Low gas velocity area, the descending liquid slotted eye discharge washing shell that flowing is fallen on tower tray still further below, is reduced in washing shell to upstream
Dynamic flue gas makes the removing in flue gas to the entrainment again up of the scavenger drop gone out by cone tower packing structure coarse separation
Agent droplet content is further reduced, and is conducive to improving the feature of environmental protection.
Embodiment three
The present embodiment and the structure and principle of embodiment one are essentially identical, as shown in figure 3, its difference is to wash shell
Turbulent-flow-prevention cover plate 3 is provided with 1, turbulent-flow-prevention cover plate 3 is located at flow blocking structure 2 and (washs shell 1 with scavenger liquid level of solution 5
Bottom is equipped with the removing agent solution spun off, prior art) between, side wall and the washing shell 1 of turbulent-flow-prevention cover plate 3
Inwall is fixedly connected, be provided with turbulent-flow-prevention cover plate 3 axially through exhaust gases passes.Turbulent-flow-prevention cover plate 3 can prevent tangentially to
The removing agent solution separated is carried out when the flue gas that lower eddy flow flows to scavenger liquid level of solution 5 backflows upwards secondary
Entrainment, reduces the scavenger content liquid for the packing layer 15 for entering washing shell 1 upper end, improves the gas-liquid separation of packing layer 15
Efficiency.
In the present embodiment, turbulent-flow-prevention cover plate 3 is on upward the first tapered cone-plate 31 of diameter, the side wall of the first cone-plate 31
Circumferentially spaced to be provided with arc through groove 311, multiple arc through grooves 311 constitute foregoing exhaust gases passes, the side wall bottom of the first cone-plate 31
Portion is fixedly connected on the inwall of washing shell 1.The cone angle 2 of first cone-plate 31 be 30 °~150 °, the first cone-plate 31 it is interior
The diameter dimension D5 of chamber bigger diameter end is 0.3D~0.9D.
The other structures, operation principle and beneficial effect of the present embodiment are identical with embodiment one, will not be repeated here.
On the basis of embodiment one, the present embodiment also has the advantages that：
In the flue gas washing tower that the present invention is provided, turbulent-flow-prevention cover plate can prevent tangentially downward eddy flow from flowing to removing
Reentrainment is carried out to the removing agent solution separated when the flue gas of agent solution liquid level backflows upwards, reduces and enters washing
The scavenger content liquid of the packing layer of shell upper end, improves the gas-liquid separation efficiency of packing layer.
Example IV
The present embodiment and the structure and principle of embodiment one are essentially identical, as shown in figure 4, its difference is the present embodiment
In, the cone tower packing structure 151 described in embodiment two had both been included in washing shell 1, had been included again described in embodiment three
Turbulent-flow-prevention cover plate 3 (the first cone-plate 31), its concrete structure is repeated no more.
The other structures, operation principle of the present embodiment are identical with embodiment one, will not be repeated here.
On the basis of embodiment one, the present embodiment also has the advantages that：
(1) in the flue gas washing tower that the present invention is provided, packing layer is arranged to bore tower packing structure, can increase flue gas and exist
Circulation area in packing layer, reduces gas velocity of the flue gas in packing layer, improves gas-liquid aggregation separative efficiency；It can make in filler simultaneously
The removing agent solution that coarse separation goes out in layer is first downwardly towards close to washing shell along the inner cone bottom 1512 of cone tower packing structure
The low gas velocity area of inwall, the descending liquid slotted eye discharge washing shell that flowing is fallen on tower tray still further below, is reduced in washing shell
The flue gas flowed up makes in flue gas to the entrainment again up of the scavenger drop gone out by cone tower packing structure coarse separation
Scavenger droplet content further reduce, be conducive to improve the feature of environmental protection.
(2) in the flue gas washing tower that the present invention is provided, turbulent-flow-prevention cover plate can prevent tangentially downward eddy flow from flowing to
Reentrainment is carried out to the removing agent solution separated when the flue gas of scavenger liquid level of solution backflows upwards, reduces and enters
The scavenger content liquid of the packing layer of shell upper end is washed, the gas-liquid separation efficiency of packing layer is improved.
Embodiment five
The structure and principle of the present embodiment and example IV are essentially identical, as shown in figure 5, its difference is the present embodiment
In, flow isolating cylinder 21 uses and is arranged at intervals with multiple long permeable slots 2121 on the second taper cone barrel 212, the side wall of the second taper cone barrel 212, respectively
Generatrix direction of the long permeable slot 2121 along the second taper cone barrel 212 is set, opening direction and the smoke feed mouthful 13 of each long permeable slot 2121
Airintake direction run counter to setting.The flue gas entered from smoke feed mouthful 13, in the outer wall and washing shell 1 of flow isolating cylinder 21
Constituted between wall and tangentially carry out high-speed rotational centrifugation flowing in annular space downwards, realize the gas-liquid initial gross separation of flue gas；Cigarette
When the downward high-speed rotational of gas flows to 21 lower section certain position of flow isolating cylinder, it can carry out turning back (the same eddy flow of the principle to forward spin flow
The eddy flow principle of separator), the flue gas eddy flow part turned back upwards is flowed up by the inner chamber of the second taper cone barrel 212, and one
Part is flowed up by each eddy flow of long permeable slot 2121.The opening direction of each long permeable slot 2121 can prevent flue gas from smoke feed mouthful
13 constitute " short-circuit flow " flows to packing layer 15 directly up；The upward flue gas of eddy flow by each long permeable slot 2121 when, due to
Eddy flow inertia, gas phase enters more, and liquid phase enters less, further carries out gas-liquid separation, improves gas-liquid separation efficiency；Each length is saturating
Groove 2121 can increase the circulation area of the upward flue gas of eddy flow, reduce the pressure drop of the inner chamber of the second taper cone barrel 212.
The other structures of the present embodiment, operation principle and beneficial effect are identical with example IV, will not be repeated here.
Schematical embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (12)
1. a kind of flue gas washing tower, including inner chamber axially through washing shell, connect at the top of the washing shell
Logical to set chimney, the bottom connection of the washing shell is set on the leakage fluid dram that can be opened and closed, the side wall of the washing shell
Tangentially it is provided with and communicated with the smoke feed mouthful of inner chamber insertion, the washing shell and positioned at the smoke feed mouthful
Top is disposed with tower tray and packing layer from bottom to top, it is characterised in that：Flow blocking is fixedly installed in the washing shell
Structure, the side wall of the flow blocking structure is with the smoke feed mouthful in being spaced and being oppositely arranged, and the top of the flow blocking structure is close
Envelope connection ground is fixed on the inwall of the washing shell, and permission flue gas is provided with the flow blocking structure and is passed through from bottom to top
Smoke ventilator.
2. flue gas washing tower as claimed in claim 1, it is characterised in that：The flow blocking structure include inner chamber axially through
Flow isolating cylinder, the side wall of the flow isolating cylinder and smoke feed mouthful is in interval and is oppositely arranged, the inner chamber structure of the flow isolating cylinder
Into the smoke ventilator；A flow blocking ring cowling plate, the flow blocking ring are fixed with the top exterior walls of the flow isolating cylinder with being tightly connected
The lateral wall of cover plate is fixed on the inwall of the washing shell above the smoke feed mouthful in which can be tightly connected.
3. flue gas washing tower as claimed in claim 2, it is characterised in that：The flow isolating cylinder is inner chamber axially through, side
Wall is sealed and downward the first tapered taper cone barrel of diameter.
4. flue gas washing tower as claimed in claim 3, it is characterised in that：The inner cavity top diameter of first taper cone barrel
Size is 0.6~0.9 times of the intracavity diameter size of the washing shell, the intracavity bottom diameter chi of first taper cone barrel
0.4~0.7 times of the very little intracavity diameter size for the washing shell, the cone angle of first taper cone barrel is 20 °~60 °.
5. flue gas washing tower as claimed in claim 2, it is characterised in that：The flow isolating cylinder be inner chamber axially through and
Multiple long permeable slots, each length are arranged at intervals with downward the second tapered taper cone barrel of diameter, the side wall of second taper cone barrel
Generatrix direction of the through groove along second taper cone barrel is set, the opening direction of each long permeable slot and entering for the smoke feed mouthful
Run counter to setting in gas direction.
6. flue gas washing tower as claimed in claim 5, it is characterised in that：The inner cavity top diameter of second taper cone barrel
Size is 0.6~0.9 times of the intracavity diameter size of the washing shell, the intracavity bottom diameter chi of second taper cone barrel
Very little 0.1~0.4 times of intracavity diameter size for the washing shell, the area of passage sum of each long permeable slot with it is described
It is 0.16~0.5 to wash the ratio between lumenal cross-section product of shell.
7. flue gas washing tower as claimed in claim 2, it is characterised in that：The flow isolating cylinder be inner chamber axially through circle
Column casing.
8. flue gas washing tower as claimed in claim 7, it is characterised in that：The intracavity diameter size of the cylindrical drum is institute
State the intracavity diameter size of washing shell 0.4~0.7 times.
9. flue gas washing tower as claimed in claim 1, it is characterised in that：Turbulent-flow-prevention is provided with the washing shell
Cover plate, the turbulent-flow-prevention cover plate is located between the flow blocking structure and scavenger liquid level of solution, the side wall of the turbulent-flow-prevention cover plate
With it is described washing shell inwall be fixedly connected, be provided with the turbulent-flow-prevention cover plate axially through exhaust gases passes.
10. flue gas washing tower as claimed in claim 9, it is characterised in that：The turbulent-flow-prevention cover plate is that diameter is upward gradually
Circumferentially spaced on first cone-plate of contracting, the side wall of first cone-plate to be provided with arc through groove, multiple arc through grooves constitute institute
Exhaust gases passes are stated, the sidewall bottom of first cone-plate is fixedly connected on the inwall of the washing shell.
11. flue gas washing tower as claimed in claim 9, it is characterised in that：The turbulent-flow-prevention cover plate is that diameter is downward gradually
Second cone-plate of contracting, the center of second cone-plate sets the circle open-work of insertion, and the round open-work constitutes the exhaust gases passes,
The top side wall of second cone-plate is fixedly connected on the inwall of the washing shell.
12. flue gas washing tower as claimed in claim 1, it is characterised in that：Described filler layer is cone tower packing structure, institute
State and the upward tapered outer vertex of a cone of diameter is provided with the top of cone tower packing structure, the bottom up of the cone tower packing structure is set
There is the upward tapered inner cone bottom of diameter, the sidewall bottom of the cone tower packing structure is fixedly connected on the interior of the washing shell
On wall.
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| CN201710599204.5A CN107243206B (en) | 2017-07-21 | 2017-07-21 | Flue gas scrubbing tower equipment |
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| CN116717640A (en) * | 2023-05-29 | 2023-09-08 | 上海协微环境科技有限公司 | Waterproof vapour is palirrheated flange subassembly and tail gas processing system |
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