CN209204984U - A kind of high-efficiency swirl-type FGD by spraying mist tower - Google Patents
A kind of high-efficiency swirl-type FGD by spraying mist tower Download PDFInfo
- Publication number
- CN209204984U CN209204984U CN201821702629.0U CN201821702629U CN209204984U CN 209204984 U CN209204984 U CN 209204984U CN 201821702629 U CN201821702629 U CN 201821702629U CN 209204984 U CN209204984 U CN 209204984U
- Authority
- CN
- China
- Prior art keywords
- spiral board
- spiral
- swirl
- flow
- spraying mist
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
A kind of high-efficiency swirl-type FGD by spraying mist tower, inverted spiral board, spray tube, several layers spiral-flow type FGD by spraying mist unit, air inlet pipe and doctor solution collecting pipe are from top to bottom disposed in shell, case top is connected to exhaust pipe, and the inverted spiral board is for making the air-flow demisting after desulfurization；The swirl-spray desulfurization unit successively includes from top to bottom, radial angle is greater than 0 degree of swirl vane group, the blind plate positioned at swirl vane group center, the cover cylinder positioned at swirl vane edge, opening line rotation direction the descending liquid spiral board opposite with swirl vane group, airflow direction of the air-flow for drawing air inlet pipe after descending liquid spiral board and swirl vane group is opposite, reduce air-flow velocity, the absorbing liquid for drawing spray tube is through the swirl-spray desulfurization unit, drop is at least dispelled by the air-flow ramped up three times, and is moved in the opposite direction.The desulfurizing tower resistance of the utility model is small, and the time of contact of absorbing liquid and sulfurous gas and gas is long, and the liquid film of formation is thinner, and mass-transfer efficiency is higher.
Description
Technical field
The utility model design field of chemical equipment more particularly to it is a kind of suitable for industrial circle be applied to desulfuration operations
Device.
Background technique
Rotating stream tray scrubber is generally used for dust-removal and desulfurizing, and main mechanism is the inertial collision of grit and drop, centrifuge separation and liquid
Film adherency etc..Spiral board in rotating stream tray scrubber allows high-speed flow to pass through, therefore load is higher since percent opening is larger, processing
Ability is larger, and pressure drop is lower, and operating flexibility is larger.Its gas-liquid contact time is shorter, is suitable for the process of gas phase diffusion control, such as
Gas-liquid direct contact heat transfer, fast reaction absorption etc..
The major drawbacks of the prior art are due to the high cycle speed of spiral board tower tray, and centrifugal force is big, drop by strength separation,
Thus space fails to be adequately used for gas-liquid contact in tower, thus efficiency is lower, and general desulfuration efficiency is 80%.
Utility model content
The technical issues of the utility model solves is, unreasonable due to prior art construction, caused by rotating stream tray scrubber
Desulfuration efficiency the problem of being unable to satisfy the demand of work, and then provide a kind of rotating stream tray scrubber for optimizing structure.
The utility model the technical scheme adopted is that a kind of high-efficiency swirl-type FGD by spraying mist tower, in shell by up to
Under be disposed with inverted spiral board, spray tube, several layers spiral-flow type FGD by spraying mist unit, air inlet pipe and doctor solution are collected
Pipe, the case top are connected to exhaust pipe, are additionally provided in the shell positioned at the top of every layer of spiral-flow type FGD by spraying mist unit
Suspension is located at every layer of spiral-flow type FGD by spraying mist unit for hanging fixed spiral-flow type FGD by spraying mist unit outside the shell
Place is additionally provided with manhole, and the spray tube and air inlet pipe are fixed by the bracket in shell；Spiral-flow type FGD by spraying mist unit includes,
The spiral board being fixed on shell by bracket gusset and the descending liquid spiral board being fixed below spiral board, the inverted eddy flow
Plate is for making the air-flow demisting after desulfurization；The swirl-spray desulfurization unit successively includes that radial angle is greater than 0 degree of rotation from top to bottom
Flow blade group, the blind plate positioned at swirl vane group center, the cover cylinder positioned at swirl vane edge, opening line rotation direction and swirl vane
The opposite descending liquid spiral board of group, airflow direction phase of the air-flow for drawing air inlet pipe after descending liquid spiral board and swirl vane group
Instead, air-flow velocity is reduced, the absorbing liquid for drawing spray tube is at least ramped up three times through the swirl-spray desulfurization unit
Air-flow dispels into drop, and moves in the opposite direction.
Further, the swirl vane group, cover cylinder, blind plate form spiral board, and the cover cylinder at least ecto-entad is at least
Two circle of setting, cover cylinder diameter once successively decreases, and the swirl vane group is circumferentially uniformly distributed around blind plate, and swirl vane group includes,
The first swirl vane being arranged between outer side cover cylinder and inside cover cylinder, and the second rotation being arranged between inside cover cylinder and blind plate
Flow blade.
Particularly preferably, the spiral board revolves gusset by bracket and is fixed on shell.
Particularly preferably, the elevation angle of first swirl vane and first swirl vane is respectively to angle for 5-25
20-25 degree and 20-25 degree, the first swirl vane and the second swirl vane around the spiral board center of circle direction of rotation it is identical be introversion
Plate.
Further, the suspension includes the branch for being fixed on the intracorporal annular table of the shell, being used to support annular table
The flange of bracket, lodge in annular table is supportted, piece is enclosed by the taper that flange inner edge turns down in the diagonal.
Preferably, the descending liquid spiral board is trapezoidal plate, and bottom is fixedly connected with the taper and encloses piece root edge and outside mask
The extended segment end of cylinder, descending liquid spiral board enclose the distribution of piece even circumferential along taper, and the height that taper encloses piece is longer than outside mask cylinder
The length of extended segment makes the elevation angle 65-70 degree of descending liquid spiral board.
Further, the interior opening line radial angle of the descending liquid spiral board is greater than 0 degree, and outer opening line radial angle is equal to 0 degree.
Preferably, bottom is connect with ring support on the descending liquid spiral board, and ring support connects blind plate by hanger bar,
The sectional area of ring support is the 40-50% of air inlet pipe sectional area.
Preferably, the percent opening of the spiral board is 30-40%.
The high-efficiency swirl-type FGD by spraying mist tower course of work of the utility model, as follows: S1. is distributed to absorbing liquid by blind plate
Mist state drop is dispelled by bottom-up spiralling air-flow in the swirl vane group of spiral board；
Get rid of drop to desulfurization inner wall of tower by air-flow, along taper encloses piece, descending liquid eddy flow plate surface is distributed to form liquid film；
When S3. making air-flow by descending liquid spiral board, the liquid film forming mist state drop for being distributed in descending liquid eddy flow plate surface is dispelled；
S4. make air-flow by distinguishing when descending liquid spiral board with the spiral upper body airflow direction by being formed when swirl vane group
On the contrary.
The desulfurizing tower that technical solution provided by the utility model provides is provided only with spiral board and downspout in contrast to traditional
Desulfurizing tower, have the advantage that 1. the present embodiment have more for the surface area of absorbing liquid expansion, absorbing liquid connects with sulfurous gas
The surface area of touching is bigger；2. absorbing liquid is contacted with the sulfurous gas moved toward one another in three times in spiral-flow type FGD by spraying mist unit,
The absorbing liquid that being equivalent to makes to drop under the effect of gravity slows down in three times in spiral-flow type FGD by spraying mist unit, extends absorption
Time of contact with gas of the liquid in desulfurizing tower；3. absorbing liquid is transported with opposite in three times in spiral-flow type FGD by spraying mist unit
Dynamic sulfurous gas contact forms fine droplets drop by continuous crushing, and the diameter of drop is than the drop that traditional spiral board dispels
Smaller, the total surface area of all drops is bigger；4. the sulfurous gas that air inlet pipe introduces is in spiral-flow type FGD by spraying mist unit through dropping
Liquid spiral board changes a direction, then changes direction for the second time through the first spiral board, the second spiral board, then through next layer of rotation
Flow type spray desulfurization unit changes direction by descending liquid spiral board again, reduces flow velocity of the sulfurous gas by desulfurizing tower, extends
Time of contact with gas of the processed gas in desulfurizing tower；5. the desulfurizing tower ratio of the utility model is in material filling type desulfurizing tower, folding
Flow that plate type desulfurization tower resistance is small, the time of contact of absorbing liquid and sulfurous gas and gas is long, and the liquid film of formation is thinner, mass-transfer efficiency
It is higher.
Detailed description of the invention
Fig. 1 is the desulfurizing tower schematic cross-sectional view of the utility model；
Fig. 2 is the structural schematic diagram of cyclone desulfuration unit in the utility model Fig. 1；
Fig. 3 is the overlooking structure diagram of cyclone desulfuration unit in the utility model Fig. 1；
Fig. 4 is the overlooking structure diagram of descending liquid spiral board in the utility model Fig. 1；
Fig. 5 is overlooking structure diagram when spiral board is just set in the utility model Fig. 1；
Fig. 6 is the structural schematic diagram of the cyclone desulfuration unit of comparative example 1
Fig. 7 is the structural schematic diagram for the desulfurizing tower that tradition does not set descending liquid spiral board；
H when Fig. 8 is A-S filler desulfurizing tower purifying coke oven gas2S、CO2The relational graph of absorptivity and time.
Wherein, 2 be doctor solution collecting pipe；11 be air inlet pipe；12-1 is ring support；12-2 is descending liquid spiral board；12-3
For branch angle gusset；12-4 is cover cylinder；12-6 is the first swirl vane；12-7 is blind plate；12-8 is the second swirl vane；12-9
For hanger bar；13 be manhole；14 be spiral board；17 be exhaust pipe；18 be bracket；19 be spray tube；20 be spray nozzle；21 are
Suspension；22 be shell；24 be compensation gasket；25 be bracket gusset；26 be flange；27 enclose piece for taper；28 be annular table；
29 be support bracket.
Specific embodiment
Below with reference to embodiment, the utility model is further described in detail, but the protection scope of the utility model is simultaneously
It is without being limited thereto.
Embodiment 1
As shown in Figure 1, 2, the utility model relates to a kind of high-efficiency swirl-type FGD by spraying mist towers, in shell 22 by up to
Under be disposed with inverted spiral board 14, spray tube 19, several layers spiral-flow type FGD by spraying mist unit, air inlet pipe 11 and doctor solution
Collecting pipe 2；It is connected to exhaust pipe 17 at the top of shell 22, is also set up in shell 22 positioned at the top of every layer of spiral-flow type FGD by spraying mist unit
There is suspension 21, for hanging fixed spiral-flow type FGD by spraying mist unit, is located at every layer of spiral-flow type FGD by spraying mist list outside shell 22
First place is additionally provided with manhole 13, spray tube 19 and air inlet pipe 11 and is fixed in shell 22 by bracket 18.
Spiral-flow type FGD by spraying mist unit includes the spiral board 14 being fixed on shell 22 by bracket gusset 25 and fixes
Descending liquid spiral board 12-2 below spiral board 14, spiral board 14 include the cover cylinder that the circle of blind plate 12-7 and at least two is arranged concentrically
Diameter successively decreases from outside to inside by 12-4, two circle cover cylinder 12-4, is provided with the first swirl vane between outer side cover cylinder and inside cover cylinder
12-6 is provided with the rotation of the second swirl vane 12-8, the first swirl vane 12-6 and second between inside cover cylinder and blind plate 12-7
Stream blade 12-8 is evenly distributed on simultaneously using 14 center of spiral board as on the circumference in the center of circle, the first swirl vane 12-6 and first revolves
The elevation angle for flowing blade 12-6 is 25 degree, and radial angle is respectively 25 degree and 25 degree, the first swirl vane 12-6 and the second eddy flow leaf
Piece 12-8 around 14 center of circle of spiral board direction of rotation it is identical be interior to plate；
Suspension 21 include be fixed in shell 22 annular table 28, be used to support annular table 28 support bracket 29,
Flange 26 of the lodge in annular table 28 encloses piece 27 by the taper that 26 inner edge of flange turns down in the diagonal, and descending liquid spiral board 12-2 is
Trapezoidal plate, bottom are fixedly connected with the extended segment end that taper encloses 27 root edge of piece and outside mask cylinder 12-4, enclose piece 27 along taper
Even circumferential distribution, the height that taper encloses piece 27 are longer than the length of the extended segment of outside mask cylinder 12-4, make facing upward for descending liquid spiral board
Angle is 65 degree, and such as Fig. 3 descending liquid spiral board 12-2 is greater than 0 degree close to the radial angle of the interior opening line 57 of 14 center of circle side of spiral board,
To plate in being formed, and the radial angle of the outer opening line 46 of separate 14 center of circle side of spiral board is 0 degree, is radial plate, descending liquid eddy flow
Direction of rotation and the direction of rotation phase of first swirl vane 12-6, second swirl vane 12-8 of the plate 12-2 around 14 center of circle of spiral board
Instead, bottom 67 is connect with ring support 12-1 on descending liquid spiral board 12-2, and ring support 12-1 is blind by hanger bar 12-9 connection
The sectional area of plate 12-7, ring support 12-1 are the 40% of 11 sectional area of air inlet pipe.
In use, sulfurous gas enters spiral-flow type desulfurizing tower by air inlet pipe 11 to the utility model from bottom to top
Interior, absorbing liquid from top to bottom enters workspace by spray tube 19；Air-flow and absorbing liquid perform relative motion in tower.Positioned at tower top
Spiral board 14 is inversely installed, and makes spiral board 14 as export-oriented plate, make by desulfurization after gas trend it is partially outer, there is centrifugal force,
For demisting；Positioned at the lower section of spray tube 19, each layer of spiral board 14 is just setting installation, as it is interior to plate for mass transfer, make by
Sulfurous gas by having centripetal component velocity when this plate, centrifugal force is smaller, and the travel of drop is long, and vapour-liquid time of contact prolongs
It is long, improve mass-transfer efficiency；14 percent opening of spiral board is 30%, for being forced through sulfurous gas, makes flow spiral ascending motion,
The liquid stream declined from spray tube 19 or descending liquid spiral board 12-2 is assigned to each first swirl vane 12-6 and second from blind plate 12-7
On swirl vane 12-8, forms liquid film and part sends into drop forth by air-flow, drop is with flow rotation, due to centripetal point of speed
Degree, the travel of drop is long, but still is got rid of by centrifugal force to shell 22, forms liquid film and flows down, encloses piece 27 through flange 26 and taper
Collect to descending liquid spiral board 12-2, absorbing liquid moves across descending liquid spiral board 12-2 forming spiral from top to bottom and moves downward liquid
Stream is concentrated to the blind plate 12-7 of next layer of spiral-flow type FGD by spraying mist unit, while sulfurous gas is upward through descending liquid spiral board 12-2
When movement, spiral up draft is formed, the liquid film collision with along descending liquid spiral board 12-2 descending motion dispels part liquid film
Form drop, due to descending liquid spiral board 12-2 be it is trapezoidal, the extended segment of outside mask cylinder 12-4 is fixed on and taper encloses piece in bottom 45
27 is geographical, makes descending liquid spiral board 12-2 close to the interior opening line 57 of 14 center of circle side of spiral board and the angle of radius greater than 0, in formation
To plate, make the drop to be formed that there is centripetal component velocity, the travel of drop is long, and vapour-liquid time of contact extends, and improves mass transfer effect
Rate；By the direction of rotation of the descending liquid spiral board 12-2 spiral air flow risen, with process the first spiral board 12-6 and the second eddy flow
The direction of rotation of the spiral liquid flow of plate 12-8 decline is on the contrary, the liquid stream for making spiralling flow slowing down, while declining spiral
To slow down, such as Fig. 4, arrow direction is direction of rotation of the air-flow after descending liquid spiral board 12-2, and liquid stream flows out contrary, one
Aspect extends the time of contact with gas of sulfurous gas and absorbing liquid in spiral-flow type FGD by spraying mist unit, on the other hand exists
Absorbing liquid and sulfurous gas move toward one another three times in spiral-flow type FGD by spraying mist unit, and absorbing liquid is dispelled three times to form drop increase
The contact area of absorbing liquid and sulfurous gas；There are also parts through descending liquid for the absorbing liquid of this outer descending liquid spiral board 12-2 decline
Spiral board 12-2 flow on the outside of descending liquid spiral board 12-2 far from the outer opening line 46 of 14 center of circle side of spiral board and forms spiral liquid flow,
Since the outer opening line 46 is radial plate, gets rid of the liquid to fall through the outer opening line 46 outward and be evenly distributed to next layer of eddy flow
First swirl vane 12-6 of formula FGD by spraying mist unit and the second surface swirl vane 12-8.
Spiral-flow type FGD by spraying mist unit is arranged 15 layers, and the absorbing liquid that spray tube 19 sprays to blind plate 12-7 is sprayed in every layer of spiral-flow type
It is divided into one drop declined along spiral board 14 in mist desulfurization unit；Got rid of after being dispelled by the bottom-up air-flow of spiral board 14 to
22 inner wall of shell, then along descending liquid spiral board 12-2 confluence one；Opening line 57 is to ring support along descending liquid spiral board 12-2
12-1 center convergence one；Outside descending liquid spiral board 12-2 opening line 46 decline to next layer of 14 spiral of spiral board one；
As arrow direction is the airflow direction risen after spiral board, the flow direction and air-flow that drop declines through spiral board in Fig. 5
It is contrary.
Make desulfurizing tower provided in this embodiment in contrast to traditional desulfurizing tower for being provided only with spiral board and downspout: 1.
Embodiment has more for the surface area of absorbing liquid expansion, and the surface area that absorbing liquid is contacted with sulfurous gas is bigger；2. absorbing liquid
It is contacted in three times with the sulfurous gas moved toward one another in spiral-flow type FGD by spraying mist unit, being equivalent to makes to drop under the effect of gravity
Absorbing liquid slows down in three times in spiral-flow type FGD by spraying mist unit, extends absorbing liquid connecing in desulfurizing tower with gas
Touch the time；3. absorbing liquid is contacted with the sulfurous gas moved toward one another in three times in spiral-flow type FGD by spraying mist unit, continuously broken
Broken formation fine droplets drop, the diameter of drop is smaller than the drop that traditional spiral board dispels, and the total surface area of all drops is more
Greatly.
The sulfurous gas that air inlet pipe 11 introduces changes in spiral-flow type FGD by spraying mist unit through descending liquid spiral board 12-2 primary
Direction, then change direction for the second time through the first spiral board 12-6, the second spiral board 12-8, it is then spraying through next layer of spiral-flow type
Desulfurization unit changes direction by descending liquid spiral board 12-2 again, reduces flow velocity of the sulfurous gas by desulfurizing tower, extends desulfurization
Time of contact with gas of the gas in desulfurizing tower.
The present embodiment is small compared to material filling type desulfurizing tower, baffle plate type desulfurizing tower resistance, absorbing liquid and sulfurous gas and gas
The time of contact of body is long, and the liquid film of formation is thinner, and mass-transfer efficiency is higher.
Due to being the low pressure of swirling eddy above descending liquid spiral board 12-7 and the first spiral board 12-6, the second spiral board 12-8
Area, absorbing liquid use concentration for the NaOH solution of 12-14%, the initial H of the gas at air inlet pipe 112S concentration is 6500mg/m3,
H at exhaust pipe 172S concentration is 800mg/m3, desulfuration efficiency 88%.
The utility model design covers rotational flow plate device, rotates and rises by the flue gas of primary purifying, cyclone pneumatic device
With guiding and relay effect, air swirl is generated using the kinetic energy of exhaust gas itself, gas-liquid two-phase comes into full contact with, and it is anti-to carry out mass transfer
It answers, exhaust gas passes through the desulfurization of Multi-stage spiral device in tower, it can be ensured that purification efficiency reaches technical requirements.
Embodiment 2
Inverted spiral board 14, spray tube 19 are from top to bottom disposed in shell 22, several layers spiral-flow type is sprayed
Desulfurization unit, air inlet pipe 11 and doctor solution collecting pipe 2；It is connected to exhaust pipe 17 at the top of shell 22, is located at every layer of eddy flow in shell 22
The top of formula FGD by spraying mist unit is additionally provided with suspension 21, for hanging fixed spiral-flow type FGD by spraying mist unit, shell 22
It is fixed by bracket 18 that manhole 13, spray tube 19 and air inlet pipe 11 are additionally provided at every layer of spiral-flow type FGD by spraying mist unit outside
In shell 22, spiral-flow type FGD by spraying mist unit includes spiral board 14 and the descending liquid spiral board 12- for being fixed on 14 lower section of spiral board
2, spiral board 14 includes the cover cylinder 12-4 that the circle of blind plate 12-7 and at least two is arranged concentrically, and two enclose cover cylinder 12-4, and diameter is passed from outside to inside
Subtract, the first swirl vane 12-6 is provided between outer side cover cylinder and inside cover cylinder, is set between inside cover cylinder and blind plate 12-7
It is equipped with the second swirl vane 12-8, the first swirl vane 12-6 and the second swirl vane 12-8 while being evenly distributed on eddy flow
14 center of plate is on the circumference in the center of circle；The elevation angle of first swirl vane 12-6 and the first swirl vane 12-6 are 5 degree, radial angle
Respectively 20 degree and 20 degree；Direction of rotation of the first swirl vane 12-6 and the second swirl vane 12-8 around 14 center of circle of spiral board
Identical is interior to plate；Suspension 21 includes the annular table 28 being fixed in shell 22, the support for being used to support annular table 28
The flange 26 of bracket 29, lodge in annular table 28 encloses piece 27, descending liquid spiral board by the taper that 26 inner edge of flange turns down in the diagonal
12-2 is trapezoidal plate, and bottom is fixedly connected with the extended segment end that taper encloses 27 root edge of piece and outside mask cylinder 12-4, along taper
The distribution of 27 even circumferential of piece is enclosed, the height that taper encloses piece 27 is longer than the length of the extended segment of outside mask cylinder 12-4, makes descending liquid eddy flow
The elevation angle of plate is 70 degree；And as Fig. 3 descending liquid spiral board 12-2 is big close to the radial angle of the interior opening line 57 of 14 center of circle side of spiral board
In 0 degree, to plate in formation, and the radial angle of the outer opening line 46 of separate 14 center of circle side of spiral board is 0 degree, is radial plate, drop
Liquid spiral board 12-2 is around the direction of rotation in 14 center of circle of spiral board and the rotation of the first swirl vane 12-6, the second swirl vane 12-8
Contrary, bottom 67 is connect with ring support 12-1 on descending liquid spiral board 12-2, and ring support 12-1 passes through hanger bar 12-9
Blind plate 12-7 is connected, the sectional area of ring support 12-1 is the 40% of 11 sectional area of air inlet pipe.
Airflow channel sectional area is projection of the tower tray aperture area area on channel cross-section direction, π/4 perforated area A0=
(Dx 2-Dm 2)sina
α is that the elevation angle of spiral board is 5 degree
β is that spiral board radial angle is equal to 20 degree, β=arcsin (Dm/Dx)=20 degree
Design Dm1, Dm2For the blind plate diameter of the one the second spiral-plate leafs, Dm2=740mm, Dm1=1500mm, spiral board
Height h to ring support is 2114mm, and ring support diameter d is 1290mm
Dx1, Dx1For the one the second spiral-plate leaf outer diameters, Dx2=2163.74mm, Dx1=4385.96mm
π/4 A0=(4385.962-15002+2163.742-7402) sin5=1444933mm2
Using simulation coke-stove gas comparative example 2, the A-S filler desulfurizing tower of your company of German History ladder, traditional spiral board
The effect of tower purifying coke oven gas absorbs the hydrogen sulfide in coke-stove gas, before simulating coke oven gas purification, every cubic metre of coke oven
Coal gas contains H2S 10000mg、HCN 3000mg、NH3 4000、CO220 DEG C of 55000mg temperature, using containing NH3For 5% ammonia
Water sprinkling, fountain height are 800 kilograms/km3Coke-stove gas is simulated, into tower tolerance 75000m3/h
Comparative example 1
The device provided using embodiment 2, gas pass through the one the second spiral-plate leaf punching rate ω 0=75000/
(3600 × 1.444933)=14.418m/s, the radial velocity component of spiral-plate leaf are 14.418 × cos5=4.0898m/s,
It is about 1.5825/4.0898=0.3869s that drop, which throws away spiral-plate leaf and reaches the time of tower wall again, as spiral-plate leaf
The time of contact of the drop and gas that throw away.
Tray diameter D is 3165mm, since A-A sees in direction that the angle of descending liquid spiral board and radius is 45 degree in Fig. 2, often
A descending liquid spiral board is by 11.25 degree of radian uniformly along cover cylinder circle distribution, and as shown in Figure 6, the outer diameter of spiral board is 2600mm, therefore
The larger blade drag to gas in tower of spacing between descending liquid spiral board is negligible, therefore two layers of descending liquid spiral board is to spiral board
Between the upward component velocity of gas be ω 1=75000/ (3600 × 3.14 × 31652/ 4)=2.649m/s, absorbing liquid
In drag effect of the descending liquid eddy flow plate surface whole process by air-flow, it is equivalent to the reversed initial velocity that 2.649m/s is applied with to drop
Degree increases absorbing liquid in Ta Nei and H when each layer eddy flow plate spacing H is 2114mm in tower2The time of contact of S, i.e. drop
It drop to the time of next layer of spiral board under the initial velocity of -2.649m/s, is 1.11s, that is, throws away the drop of descending liquid spiral board
With the time of contact of gas, total time of contact of total drop and gas is about 1.49s, as shown in table 1, such as Fig. 8, single spiral-flow type
The desulfuration efficiency of FGD by spraying mist unit is 75%.
The desulfurizing tower of 15 layers of spiral-flow type FGD by spraying mist unit is set, the gas H that exhaust pipe is discharged2S concentration is 500mg/
m3, desulfuration efficiency 95-97%.
Comparative example 1
Using the A-S filler desulfurizing tower of your company of German History ladder, ammonium hydroxide is in Ta Nei and simulation coke-stove gas time of contact
8.1s, desulfuration efficiency 81%, and CO2Removal efficiency be 18%.
When absorbing due to NH3With H2S can be bound directly, and reaction is very fast, and CO2With NH3Reaction before first with hydration at
Carbonic acid needs the long period, such as Fig. 8, thus use A-S filler desulfurizing tower purifying coke oven gas for 81% desulfuration efficiency, when
Ammonium hydroxide absorbs H2When S, the time of contact for simulating coke-stove gas and washing lotion should be adjusted to only seldom CO2It is combined.
CO2The diffusion velocity of molecule is to H2S washout plays a decisive role, to prevent CO2Wash-off, A-S filler desulfurizing tower behaviour
Method need to be removed using no turbulent flow when making, the cleaning solution film surface formed on filler remains unchanged, in this way in entire scrubbing tower
Operation difficulty is improved, A-S filler desulfurizing tower primary operational index is as follows:
Desulfurizing tower resistance is 1.5KPa, and the gas pressure into desulfurizing tower is 11.5KPa, and operation temperature is 23-26 DEG C, into
The ammonia vol 130t/h of desulfurizing tower.
Comparative example 2
The desulfurizing tower of descending liquid spiral board, such as Fig. 7 are not set using tradition, absorbing liquid is centrifuged after spiral board 201 is dispelled
Power is got rid of to tower wall, is directly flowed downward along tower wall, then is flow at next layer of spiral board blind plate through downspout 601 and dispersed again,
Liquid phase whole process is influenced by tower wall effect during declining along downspout and is not affected by resistance, and drop is formed in downspout without rapids
Flow liquid film and gas contact mass transfer, it is 0m/s, each layer eddy flow in tower that drop, which has just been attached to initial velocity when tower wall is just begun to decline,
Plate spacing H is 2114mm, and drop is 0.66s, as liquid film and gas from the time of the near next layer of spiral board of upper one layer of spiral board
The time of contact of body.
When spiral-plate leaf radial angle is less than 0 simultaneously, the travel of drop is longer, increases gas-liquid contact time,
High by 4.7%, tray diameter 3165mm when its plate efficiency than spiral-plate leaf radial angle is 0, radial angle is 5 degree, and blind plate diameter is
740mm, the punching rate that air-flow passes through spiral-plate leaf is 14.418m/s, and the radial velocity component of spiral-plate leaf is 14.418
× cos5=4.0898m/s, it is about 1.5825m/4.0898m/s=that drop, which throws away spiral-plate leaf and reaches the time of tower wall again,
The time of contact of drop and gas that 0.3869s, as spiral-plate leaf are thrown away, such as table 1.
The desulfuration efficiency of single layer spiral board is about 50-60%.
The desulfurizing tower of descending liquid spiral board is not set in contrast to the above tradition, embodiment 2 is absorbed in two layers of spiral board or spiral board
To landing between ring support, the required time is as shown in table 1.
Table 1
The utility model is made of ail-plastic materials, have good corrosion resistance, intensity are high, ontology is light-weight, it is non-aging,
Structurally reasonable, the advantages that being unlikely to deform, is easy to maintain.
Claims (9)
1. a kind of high-efficiency swirl-type FGD by spraying mist tower, which is characterized in that be from top to bottom disposed with inverted rotation in shell
Flowing plate, spray tube, several layers spiral-flow type FGD by spraying mist unit, air inlet pipe and doctor solution collecting pipe, the case top connection row
Tracheae, the interior top positioned at every layer of spiral-flow type FGD by spraying mist unit of the shell is additionally provided with suspension, for hanging fixation
Spiral-flow type FGD by spraying mist unit, the shell is located at every layer of spiral-flow type FGD by spraying mist unit outside is additionally provided with manhole, the spray
Shower pipe and air inlet pipe are fixed by the bracket in shell；Spiral-flow type FGD by spraying mist unit includes being fixed on shell by bracket gusset
Spiral board on body and the descending liquid spiral board being fixed below spiral board, the inverted spiral board is for making the air-flow after desulfurization
Demisting；The spiral-flow type FGD by spraying mist unit successively includes that radial angle is greater than 0 degree of swirl vane group, is located at eddy flow from top to bottom
The blind plate at blade group center, the cover cylinder positioned at swirl vane edge, opening line rotation direction the descending liquid eddy flow opposite with swirl vane group
Plate, airflow direction of the air-flow for drawing air inlet pipe after descending liquid spiral board and swirl vane group is on the contrary, reduction air-flow velocity, makes
The absorbing liquid that spray tube is drawn at least dispels into drop by the air-flow ramped up three times through the swirl-spray desulfurization unit, and
It moves in the opposite direction.
2. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that the swirl vane group, cover cylinder,
Blind plate forms spiral board, and two circles are at least arranged in the cover cylinder at least ecto-entad, and cover cylinder diameter once successively decreases, the swirl vane
Group is circumferentially uniformly distributed around blind plate, and swirl vane group includes the first eddy flow being arranged between outer side cover cylinder and inside cover cylinder
Blade, and the second swirl vane being arranged between inside cover cylinder and blind plate.
3. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that the spiral board passes through bracket muscle
Plate is fixed on shell.
4. high-efficiency swirl-type FGD by spraying mist tower according to claim 2, which is characterized in that first swirl vane and institute
The elevation angle for stating the first swirl vane be 5-25 to angle be respectively 20-25 degree and 20-25 degree, the first swirl vane and the second eddy flow leaf
Piece around the spiral board center of circle direction of rotation it is identical be interior to plate.
5. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that the suspension includes fixing
In the intracorporal annular table of the shell, it is used to support the flange of the support bracket, lodge of annular table in annular table, by flange inner edge
The taper turned down in the diagonal encloses piece.
6. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that the descending liquid spiral board is trapezoidal
Thin plate, bottom are fixedly connected with the extended segment end that taper encloses piece root edge and outside mask cylinder, and descending liquid spiral board encloses piece circumference along taper
It is uniformly distributed, the height that taper encloses piece is longer than the length of the extended segment of outside mask cylinder, makes the elevation angle 65-70 of descending liquid spiral board
Degree.
7. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that opened in the descending liquid spiral board
Suture radial angle is greater than 0 degree, and outer opening line radial angle is equal to 0 degree.
8. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that bottom is equal on the descending liquid spiral board
It is connect with ring support, ring support connects blind plate by hanger bar, and the sectional area of ring support is the 40- of air inlet pipe sectional area
50%.
9. high-efficiency swirl-type FGD by spraying mist tower according to claim 1, which is characterized in that the percent opening of the spiral board is
30-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821702629.0U CN209204984U (en) | 2018-10-20 | 2018-10-20 | A kind of high-efficiency swirl-type FGD by spraying mist tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821702629.0U CN209204984U (en) | 2018-10-20 | 2018-10-20 | A kind of high-efficiency swirl-type FGD by spraying mist tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209204984U true CN209204984U (en) | 2019-08-06 |
Family
ID=67456413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821702629.0U Active CN209204984U (en) | 2018-10-20 | 2018-10-20 | A kind of high-efficiency swirl-type FGD by spraying mist tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209204984U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097249A (en) * | 2020-01-10 | 2020-05-05 | 新疆海天祥瑞环保工程有限公司 | Rotational flow-based high-efficiency turbulent flow atomization mixing desulfurization dust removal process |
| CN111111414A (en) * | 2020-01-14 | 2020-05-08 | 山东师范大学 | Denitration system for flue gas denitration by using hydrogen peroxide and cyclone disc tower |
| CN112973606A (en) * | 2021-03-24 | 2021-06-18 | 河南科锐化工有限公司 | Stirring device for preparing 5-fluoro-2-hydroxyacetophenone |
| CN113045398A (en) * | 2021-03-24 | 2021-06-29 | 河南科锐化工有限公司 | Preparation process of 5-fluoro-2-hydroxyacetophenone |
| EP4066920A4 (en) * | 2020-07-21 | 2023-05-31 | Fuji Electric Co., Ltd. | Exhaust gas treatment device |
| CN116459634A (en) * | 2023-05-10 | 2023-07-21 | 江苏民生重工有限公司 | Hydrogen sulfide removing device |
-
2018
- 2018-10-20 CN CN201821702629.0U patent/CN209204984U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097249A (en) * | 2020-01-10 | 2020-05-05 | 新疆海天祥瑞环保工程有限公司 | Rotational flow-based high-efficiency turbulent flow atomization mixing desulfurization dust removal process |
| CN111111414A (en) * | 2020-01-14 | 2020-05-08 | 山东师范大学 | Denitration system for flue gas denitration by using hydrogen peroxide and cyclone disc tower |
| EP4066920A4 (en) * | 2020-07-21 | 2023-05-31 | Fuji Electric Co., Ltd. | Exhaust gas treatment device |
| CN112973606A (en) * | 2021-03-24 | 2021-06-18 | 河南科锐化工有限公司 | Stirring device for preparing 5-fluoro-2-hydroxyacetophenone |
| CN113045398A (en) * | 2021-03-24 | 2021-06-29 | 河南科锐化工有限公司 | Preparation process of 5-fluoro-2-hydroxyacetophenone |
| CN116459634A (en) * | 2023-05-10 | 2023-07-21 | 江苏民生重工有限公司 | Hydrogen sulfide removing device |
| CN116459634B (en) * | 2023-05-10 | 2023-11-07 | 江苏民生重工有限公司 | Hydrogen sulfide removing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209204984U (en) | A kind of high-efficiency swirl-type FGD by spraying mist tower | |
| CN109224776A (en) | A kind of high-efficiency swirl-type FGD by spraying mist tower and its sulfur method | |
| CN104874235B (en) | A kind of spiral board dedusting demister | |
| CN105854561B (en) | The device and technique that a kind of flue gas desulfurization, dedusting collaboration are administered | |
| CN102441323B (en) | Swirl double hypergravity machine | |
| CN206414960U (en) | Waste gas purification tower with swirling flow plate | |
| CN205598776U (en) | Cigarette tower unification desulphurized flue gas defogging system | |
| CN110614013A (en) | System for removing hydrogen sulfide in coke oven gas and desulfurization method | |
| CN103657266A (en) | Flexible fiber spiral line demisting device | |
| CN108043118A (en) | Double cyclone dedusting demisters | |
| CN206778123U (en) | A kind of minimum discharge desulfurization and dedusting coupled | |
| CN105107355B (en) | Absorption and separation integration sulfurous gas desulfurization cyclone reaction device | |
| CN105597472A (en) | Pneumatic cyclone combined demisting device | |
| CN105750100A (en) | Wet multitube cyclone separator | |
| CN201101941Y (en) | Desulfurization and dust removal integrated device of fiberglass of industry coal-fired boiler | |
| CN204684801U (en) | A kind of spiral board dedusting demister | |
| CN206631333U (en) | A kind of vortex-flow and defrosting plate of desulfurizing tower | |
| CN101322908A (en) | Wet-type high-efficient desulfation dust-extraction device and method | |
| CN112206637B (en) | Industrial flue gas washing tower | |
| CN205182373U (en) | Desulfurization dust collecting tower | |
| CN105944551B (en) | Double pH spray desulfurizing towers biphase rectification drainage sets | |
| CN202237589U (en) | Rotary cutting type demister, coal gas diffusion water seal with rotary cutting type demister, and tower with rotary cutting type demister | |
| CN112058022A (en) | Supergravity flue gas purification device | |
| CN106268052A (en) | A kind of novel radial vortex is except mist dust arrester | |
| CN206950881U (en) | A kind of equipment for improving efficiency of dust collection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190822 Address after: 430056 Workshop No. 3, 302, 9MC Block, Wuhan Economic Development Zone, Hanyang District, Wuhan City, Hubei Province Patentee after: Henghuayuan Chemical Equipment (Wuhan) Co., Ltd. Address before: 430056 9MC Block of Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: FRD Petroleum & Chemical EquipmentWuhanLtd. |
|
| TR01 | Transfer of patent right |