CN206366287U - A kind of device for being atomized turbulent flow agglomerated particle thing - Google Patents
A kind of device for being atomized turbulent flow agglomerated particle thing Download PDFInfo
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- CN206366287U CN206366287U CN201621378966.XU CN201621378966U CN206366287U CN 206366287 U CN206366287 U CN 206366287U CN 201621378966 U CN201621378966 U CN 201621378966U CN 206366287 U CN206366287 U CN 206366287U
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Abstract
A kind of device for being atomized turbulent flow agglomerated particle thing of the utility model, simple in construction, agglomerating effect is good, with replicability.It includes the shell for being internally formed exhaust gases passes, flue gas heat-exchange unit, guide vane, two-fluid jet atomization section and turbulent flow reunion section that enclosure is sequentially arranged along flow of flue gas direction；The temperature that flue gas heat-exchange unit is used to reduce ash-laden gas is not higher than the condensation temperature of vapor in ash-laden gas to T, T；Guide vane makes Particle flow direction in ash-laden gas be reached unanimity with flow of flue gas direction for adjusting flow direction；Two-fluid jet atomization section includes supply air line, supply channel and two-fluid spray nozzle；The two-fluid spray nozzle injection direction for connecting supply air line and supply channel is parallel with flow of flue gas direction；Turbulent flow reunion section includes the turbulent element that some in-line arrangements or wrong arrangement are put, and each turbulent element two ends are fixed on outer casing inner wall；Turbulent element is included using flue gas direction as the symmetrically arranged boundary plates of symmetry axis, and border front edge of board is fixedly connected.
Description
Technical field
The utility model is related to the technical field of the granular material discharged control of industrial fumes, is specially that a kind of atomization turbulent flow is reunited
The device of particulate matter.
Background technology
Coal-fired flue-gas Particulate Pollution is the emphasis of current social common concern and environmental pollution improvement.It is thin in coal-fired flue-gas
Particulate matter (aerodynamic diameter is less than 2.5 μm, abbreviation PM2.5) is difficult to be removed and easily inhaled by human body by traditional cleaner
Receive, thus cause serious air environmental pollution.The current most of coal-fired power station boilers of China and industrial furnace use electrostatic
Dust arrester carries out flue gas particles control removing, and removal efficiency may be up to more than 99%, but electrostatic dust collection equipment is to fine grained
The removal effect of thing is bad, and there are about more than 90% fine particle with particle number basis is disposed to atmospheric environment.The group of fine particle
Poly- technology is the new preconditioning technique for effectively improving fine particle capture rate, is mainly promoted carefully by physically or chemically acting on
The collision of particulate matter, which is reunited, grows up, and then improves the capture rate of fine particle, including turbulent flow reunions, acoustic agglomeration, electricity reunion,
Magnetic coagulation and steam phase transforming etc..Wherein, turbulent flow agglomeration techniques have development prospect because of simple in construction, strong applicability, but adopt
It is limited to the agglomerating effect of fine particle with the method for agglomeration of single one physical or chemical action.Thus, develop a kind of new height
The device and method tool of effect atomization turbulent flow agglomerated particle thing is of great significance.
Authorization Notice No. discloses a kind of many field coordination fine particle efficient removals for CN103768886B patent document
Devices and methods therefor, the device is sequentially connected with outfield coalescence area, the pre- dust collection section of direct current, the charged coalescence area of pulse and direct current and gathered dust
Area, thin of many field coordinations effect removing that technology, chemical agglomeration Flocculating mechanism and electric coagulating technique are combined is condensed by phase transformation
Grain thing.This method equipment is more, complicated, it is necessary to consume a large amount of saturated steams, agglomerator and electric energy, thus cost compared with
Height, practical operation is complicated.
Authorization Notice No. discloses a kind of device for promoting particulate matter to interact for CN102000472B patent document
And method, the device flows method along flue gas and is sequentially arranged diversion section and mixing section, and diversion section includes guide vane, mixing section bag
Turbulization after whirlpool blade, flue gas production whirlpool blade is produced containing shapes such as leaf, " s " shapes to disturb, and then realizes subparticle in flue gas
Collision with larger particles is reunited.The apparatus structure is simple, workable, but is acted on only with turbulent flow coalescence and do not consider to touch
Particle surface characteristic is hit, thus particle agglomeration is not sufficiently effective, and then cause the removal efficiency of particulate matter relatively low.
Application publication number discloses a kind of removing fire coal boiler fume fine particle for CN105597477A patent document
Device, the device is arranged in after desulphurization plant by technological process, and flue gas vapors injector, steaming are set gradually along flue gas flow direction
Vapour phase becomes reunion room, turbulent flow reunion room and demister, by cooperateing with steam phase transforming and turbulent perturbation to realize the collision of fine particle
Reunite.This method is simple to operate, strong adaptability, but device is more complicated, and need to consider whether to be arranged with sufficient space, because
And promote and be difficult.
Utility model content
For problems of the prior art, the utility model provides a kind of device for being atomized turbulent flow agglomerated particle thing,
Simple in construction, agglomerating effect is good, with replicability.
The utility model is to be achieved through the following technical solutions：
A kind of to be atomized the device of turbulent flow agglomerated particle thing, including be internally formed the shell of exhaust gases passes, enclosure is along cigarette
Flue gas heat-exchange unit, guide vane, two-fluid jet atomization section and turbulent flow reunion section that flow of air direction is sequentially arranged；Described cigarette
The temperature that gas heat exchanger is used to reduce ash-laden gas is not higher than the condensation temperature of vapor in ash-laden gas to T, T；Described leads
Stream blade is to be multiple with streamlined outline and by being connected to the linkage control device progress of flue side in whole or in part
Rotate the guide curve surface of adjustment；Particle flow direction in ash-laden gas is set to tend to one with flow of flue gas direction for adjusting flow direction
Cause；Described two-fluid jet atomization section includes supply air line, supply channel and two-fluid spray nozzle；Connect supply air line and confession
The two-fluid spray nozzle injection direction of water lines is parallel with flow of flue gas direction；Described turbulent flow reunion section includes some in-line arrangements or mistake
The turbulent element that arrangement is put, each turbulent element two ends are fixed on outer casing inner wall；Described turbulent element is included with flue gas side
To for the symmetrically arranged boundary plates of symmetry axis, border front edge of board is fixedly connected.
It is preferred that, using vertical flue gas flow direction as row, parallel flue gas flow direction is row, and described guide vane is by m1Row and n1Row
Streamlined guide curve surface composition, m1And n1For natural number, m1=1, n1≥4；Guide curve surface is the song smoothly transitted along flue gas flow direction
Face.
Further, described turbulent flow reunion section is by m2Row and n2Row turbulent element is constituted, turbulent element in-line arrangement or wrong arrangement
Put, m2And n2For natural number, m2≥n2, n2≥n1。
Further, not less than 1.5 times flow-disturbings of longitudinal pitch s of the described turbulent element along flow of flue gas direction adjacent lines
Full-size l of the element along flow of flue gas direction.
It is preferred that, linkage control device includes coordinated signals axle and controlled motor, and described each guide curve surface passes through
Coordinated signals axle is connected to the outer casing inner wall of both sides, and one end connection controlled motor of coordinated signals axle carries out the whole of guide vane
Body or part rotation adjustment.
It is preferred that, described two-fluid spray nozzle is equally spaced and atomizing angle θ >=60 °, the average grain diameter d models of atomized drop
Enclose for 30~60 μm.
It is preferred that, described two-fluid spray nozzle arrangement quantity is identical with guide curve surface quantity, and two-fluid spray nozzle position and
After guide curve surface along distance a be 20~50cm.
It is preferred that, the rear ends of boundary plates offers multiple notches along flue gas direction, boundary plates along flue gas flow direction in indent or
Evagination it is streamlined.
It is preferred that, described turbulent element is made up of fluoroplastics, and its shape of cross section is Y-shaped, U-shaped, semi-cylindrical, shuttle
Any one in shape and V-arrangement；When the shape of cross section of turbulent element is Y-shaped, described turbulent element is also included along right
Axle is claimed to be arranged on the deflector of the front end of boundary plates.
Compared with prior art, the utility model has following beneficial technique effect：
The utility model is on the basis of turbulent flow reunion principle, and collaboration passes through flue gas heat exchange using cooling atomization technique
Device and two-fluid jet atomization section carry out surface modification treatment to flue gas particles, and increase particle surface viscosity can promote in rapids
The sticking probability of particulate matter after stream reunion section collides, the reunion for being particularly advantageous in being lifted fine particle is grown up effect, had
Efficient feature.
Further, the utility model turbulent flow reunion section is disposed with a series of turbulent element that use fluoroplastics make, and disturbs
The parameters such as material, size, shape and the position of fluid element together decide on the hydrodynamic characteristic of different-grain diameter particle in flue gas, enter
And the efficient collision of different-grain diameter particle is realized, with compared with highly controllable.
Further, two-fluid jet atomization section supply medium used is compressed air, water supply used in the utility model
Medium can be light water, desulfurization wastewater and dedusting water after filter, it is cheap, it is simple to operate, while also help coal fired power plant and
The resource reutilization of industrial furnace, can reduce the discharge of industrial wastewater.
Further, guide curve surface is attached using coordinated signals axle in the utility model, and guide vane can carry out whole
Body rotary fine adjustment, is advantageously implemented the dynamic regulation that ash-laden gas is flowed under coal fired power plant or industrial furnace different load, and then
Strengthen fine particle agglomerating effect, thus with dynamic adjustable feature.
Brief description of the drawings
Fig. 1 is the structural representation of device described in the utility model.
Fig. 2 is the schematic diagram of the utility model turbulent flow reunion section Y type turbulent elements.
Fig. 3 is the schematic diagram of the utility model turbulent flow reunion section indent V-type turbulent element.
Fig. 4 is the schematic diagram of the utility model turbulent flow reunion section evagination V-type turbulent element.
Fig. 5 is the atomizing effect schematic diagram of the utility model twin jet segment.
Fig. 6 is the principle schematic that the utility model turbulent element promotes particulate matter to reunite.
In figure：Shell 1, flue gas heat-exchange unit 2, guide vane 3, twin jet segment 4, turbulent flow reunion section 5, linkage control
Axle 6 processed, controlled motor 7, air compressor machine 8, measuring pump 9, liquid reserve tank 10, two-fluid spray nozzle 11, turbulent element 12.
Embodiment
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than restriction.
As shown in figure 1, the utility model apparatus main body structure includes shell 1, the flue gas heat-exchange unit in preferably rectangular section
2nd, guide vane 3, twin jet segment 4 and turbulent flow reunion section 5.Flue gas heat-exchange unit 2 is dividing wall type heat exchanger, Tube Sheet of Heat Exchanger
Road can be smooth pipe or spiral fin coil.Guide vane 3 is multiple guide curve surfaces with streamlined outline, and water conservancy diversion is bent
Face can carry out rotation adjustment by being connected to the coordinated signals axle 6 and controlled motor 7 of the flue side of housing 1, and carry out preferably is micro-
Adjust.Twin jet segment 4 includes the supply channel of supply air line, measuring pump 9 and the water supply of liquid reserve tank 10 that air compressor machine 8 is supplied
And two-fluid spray nozzle 11.A series of turbulent element 12 that turbulent flow reunion section 5 is put comprising in-line arrangements or wrong arrangement.
During practical operation, condensate flow is reduced to ash-laden gas temperature in staff's adjustment flue gas heat-exchange unit 2
T, T are not higher than the condensation temperature of vapor in ash-laden gas, and adjust guide vane 3 through coordinated signals axle 6 by controlled motor 7
Angle Position so that flue gas flow direction is changed into uniformity after guide vane.Further adjustment air compressor machine 8 and measuring pump 9 are transported
Row parameter, makes double fluid atomization nozzle 11 eject the atomized drop that atomizing angle θ >=60 ° and average grain diameter d are 30~60 μm, most
Whole flue gas passes through traditional cleaner and removes particulate matter after turbulent flow reunion section generation particle agglomeration is grown up.
In above-described embodiment, the injection direction of two-fluid spray nozzle 11 and the flow of flue gas side of connection supply air line and supply channel
To parallel；Supply air line is connected with the air compressor machine 8 being arranged on outside housing 1, and described supply channel input is sequentially connected metering
Pump 9 and liquid reserve tank 10, the memory storage water supply medium of liquid reserve tank 10.Water supply medium in twin jet segment 4 can for light water,
The industrial waters such as desulfurization wastewater, dedusting water after filter.
In above-described embodiment, using vertical flue gas flow direction as row, parallel flue gas flow direction is row, and guide vane 3 is m1Row and n1Row
Streamlined guide curve surface composition, while meeting m1=1, n1≥4；In practical application, the curved surface needs that smoothly transit of guide vane 3
Matching is optimized according to the numerical simulation result that different import flue gas angle conditions lower surface cambers adjust flue gas effect.
In above-described embodiment, the quantity of two-fluid spray nozzle 11 is identical with the quantity of guide vane 3, and two-fluid spray nozzle 11
The rear of position and guide vane 3 along distance a scopes is 20~50cm.
In above-described embodiment, the turbulent element 12 in turbulent flow reunion section 5 includes being symmetrical arranged as symmetry axis using flue gas direction
Boundary plates 121, the front end of boundary plates 121 is fixedly connected.Improved, the rear ends of boundary plates 121 offers multiple along flue gas direction
Notch；Boundary plates 121 are along flue gas flow direction in the streamlined of concave or convex.
The cross sectional shape of turbulent element 12 can be Y-shaped as shown in Figure 2, and turbulent element 12 also includes being arranged on along symmetry axis
The deflector 122 of the front end of boundary plates 121.
The cross sectional shape of turbulent element 12 can for " u "-shaped, semi-cylindrical, fusiformis, as shown in Figure 3 and Figure 4 have indent or
One kind in the " V " shape of evagination streamlined features；Meanwhile, the material of turbulent element 12 can be polytetrafluoroethylene (PTFE) (PTFE), gather
One kind in the fluoroplastics such as perfluoroethylene-propylene (copolymer) (FEP), polytrifluorochloroethylene (PCTFE).
In above-described embodiment, using vertical flue gas flow direction as row, parallel flue gas flow direction is row, and turbulent flow reunion section 5 is by m2Row and n2
Row turbulent element 12 is constituted, and turbulent element in-line arrangement or wrong arrangement are put, and meet m2≥n2, n2≥n1；Meanwhile, turbulent element 12
Longitudinal pitch s is met not less than full-size l of 1.5 times of turbulent elements along flow of flue gas direction.
In above-described embodiment, the atomizing effect of twin jet segment 4 is as shown in figure 5, ash-laden gas is through dropping gentle stream
By the two-fluid jet atomization section 4 of atomizing spray after to adjustment, because atomizing angle is larger and atomizing particle size is moderate, along flue gas direction
The particulate matter of flowing collides with the atomized liquid with lateral velocity, after surface particles modification mechanism, non-thin
Grain surface will appear from more fine grained diameter gradation fine droplet and fine grained adhere to non-fine grained diameter gradation compared with
Big drop, and then strengthen the surface adhesive of particle.
In above-described embodiment, the turbulent flow Agglomeration Mechanism of turbulent flow reunion section 5 is as shown in fig. 6, by the modified particle in surface
Thing carries out two types reunion in turbulent flow reunion section.1) boundary layer is reunited：Ash-laden gas is produced behind the front end of turbulent element 12
Flow boundary layer, fine grained is produced motion delay and lateral transfer by boundary layer influence, rather than fine grained is then in inertia and interception
Effect is lower to collide with fine grained；2) vortex street is reunited：Flue gas is flowed through along that will produce vortex street after turbulent element 12, and fine grained is with rotation
Whirlpool is moved rather than fine grained deviates without with vorticla motion, different-grain diameter particle is produced because of movement differential because inertia produces motion
Collision.Particulate matter is reunited after turbulent flow collision reunion mechanism grows up, and atomization turbulent flow agglomerated particle thing is formed, eventually through tradition
Cleaner is removed.
The utility model in use, comprise the following steps,
Step 1, described device is arranged in before coal fired power plant or industrial furnace cleaner, ash-laden gas is passed through into cigarette
Gas heat exchanger 2, makes ash-laden gas temperature be reduced to T, and T is not higher than the condensation temperature of vapor in ash-laden gas, then through water conservancy diversion leaf
The adjustment of piece 3 flow direction makes Particle flow direction in ash-laden gas be reached unanimity with flow of flue gas direction；
Step 2, by dropping gentle stream 8 to the ash-laden gas after adjustment by two-fluid jet atomization section 4, along flue gas direction
The particulate matter of flowing collides with the atomized liquid with lateral velocity；It is modified by following surface particles, enhancing
The surface adhesive of grain；
A. the surface that fine grained diameter gradation drop occurs in non-fine grained surface is modified；
B. fine grained adheres to the surface modification of non-fine grained diameter gradation drop；
Step 3, two types reunion is carried out in turbulent flow reunion section 5 by the modified particle in surface；
1) boundary layer is reunited；Flue gas produces flow boundary layer by the front end of turbulent element 12, and fine grained is because of boundary layer influence
Motion delay and lateral transfer are produced, non-fine grained collides under inertia and interception function with fine grained, in flow boundary
Layer occurs turbulent flow and reunited；
2) vortex street is reunited；Flue gas is flowed through along vortex street is produced after turbulent element 12, and fine grained is with vorticla motion rather than fine grained
Deviate because inertia produces motion, different-grain diameter particle produces collision because of movement differential, occurring turbulent flow in vortex street reunites；
Step 4, particulate matter is reunited and grown up after turbulent flow collision is reunited, and is formed and is atomized turbulent flow agglomerated particle thing, by except
Dirt equipment is removed.
By using cooling atomization collaboration turbulent flow reunite promote particulate matter reunite the technology of growing up need not be to existing dedusting
Equipment is changed, and changes little to existing power station or factory's integral layout, and institute's utility model apparatus structure is simple, operation side
Just, it is adaptable to which the soot emissions industry of cement, steel, ceramics and coal fired power plant etc., the agglomerating effect of fine particle is good, has
Good application development prospect.
In specific implementation process, quantity, curved surface features, the adjustment parameter such as the limit and position of guide vane 3 pass through number
It is worth analog result and carries out tentative prediction, and then adjustment is optimized according to actual flow of flue gas situation；Twin jet segment 4
Atomizing effect adjustment is optimized by the flow performance and physicochemical properties of particulate matter in flue gas, to increase particulate matter table
Face adhesion characteristics；The shape of turbulent element 12, size, transverse pitch, longitudinal pitch pass through numerical simulation knot in turbulent flow reunion section 5
Fruit optimizes adjustment with actual conditions, by the vortex characteristic, the behavior of boundary layer and to master that determine the generation of turbulent element 12
Flue gas influence is flowed, and then determines the agglomeration efficiency of particulate matter.The utility model device can be according to power plant or the flue gas of industrial furnace
Flow, unit load, burning condition etc. optimize adjustment, and then promote particulate matter repercussion effect to keep optimum state,
The final clean emission for realizing combustion product gases particulate matter.
Claims (9)
1. a kind of device for being atomized turbulent flow agglomerated particle thing, it is characterised in that：Shell (1) including being internally formed exhaust gases passes,
The internal flue gas heat-exchange unit (2) sequentially arranged along flow of flue gas direction of shell (1), guide vane (3), two-fluid jet atomization section
And turbulent flow reunion section (5) (4)；
Described flue gas heat-exchange unit (2) is used to reducing the temperature of ash-laden gas to T, and T is not higher than the cold of vapor in ash-laden gas
Solidifying temperature；
Described guide vane (3) has streamlined outline and the linkage control device by being connected to flue side to be multiple
The guide curve surface of adjustment is rotated in whole or in part；Make Particle flow direction and flue gas in ash-laden gas for adjusting flow direction
Reach unanimity flow direction；
Described two-fluid jet atomization section (4) includes supply air line, supply channel and two-fluid spray nozzle (11)；Connection supply
Two-fluid spray nozzle (11) injection direction of pipeline and supply channel is parallel with flow of flue gas direction；
Described turbulent flow reunion section (5) includes the turbulent element (12) that some in-line arrangements or wrong arrangement are put, each turbulent element (12)
Two ends are fixed on shell (1) inwall；Described turbulent element (12) is included using flue gas direction as the symmetrically arranged side of symmetry axis
Limiting plate (121), boundary plates (121) front end is fixedly connected.
2. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：With vertical flue gas flow direction
For row, parallel flue gas flow direction is row, and described guide vane is by m1Row and n1Arrange streamlined guide curve surface composition, m1And n1For certainly
So count, m1=1, n1≥4；Guide curve surface is the curved surface smoothly transitted along flue gas flow direction.
3. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 2, it is characterised in that：Described turbulent flow is reunited
Section is by m2Row and n2Row turbulent element (12) is constituted, and turbulent element (12) in-line arrangement or wrong arrangement are put, m2And n2For natural number, m2≥
n2, n2≥n1。
4. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 3, it is characterised in that：Described turbulent element
(12) along flow of flue gas direction adjacent lines longitudinal pitch s not less than 1.5 times of turbulent elements (12) along flow of flue gas direction most
Large scale l.
5. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：Linkage control device bag
Coordinated signals axle (6) and controlled motor (7) are included, described each guide curve surface is connected to both sides by coordinated signals axle (6)
Shell (1) inwall, and coordinated signals axle (6) one end connection controlled motor (7) carry out guide vane rotation in whole or in part
Modulation is whole.
6. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：Described two-fluid spray
Mouth (11) is equally spaced and atomizing angle θ >=60 °, and the average grain diameter d scopes of atomized drop are 30~60 μm.
7. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：Described two-fluid spray
Mouth (11) arrangement quantity is identical with guide curve surface quantity, and along distance a after two-fluid spray nozzle (11) position and guide curve surface
For 20~50cm.
8. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：Boundary plates (121)
Rear end offers multiple notches along flue gas direction, and boundary plates (121) are along flue gas flow direction in the streamlined of concave or convex.
9. a kind of device for being atomized turbulent flow agglomerated particle thing as claimed in claim 1, it is characterised in that：Described turbulent element
(12) it is made up of fluoroplastics, its shape of cross section is Y-shaped, any one in U-shaped, semi-cylindrical, fusiformis and V-arrangement；When disturbing
When the shape of cross section of fluid element (12) is Y-shaped, described turbulent element (12) also includes being arranged on boundary plates along symmetry axis
(121) deflector (122) of front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621378966.XU CN206366287U (en) | 2016-12-15 | 2016-12-15 | A kind of device for being atomized turbulent flow agglomerated particle thing |
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| CN201621378966.XU CN206366287U (en) | 2016-12-15 | 2016-12-15 | A kind of device for being atomized turbulent flow agglomerated particle thing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492581A (en) * | 2016-12-15 | 2017-03-15 | 西安交通大学 | A kind of device and method of atomization turbulent flow agglomerated particle thing |
| CN111151388A (en) * | 2020-01-09 | 2020-05-15 | 刘根凡 | Accurate reunion ware |
-
2016
- 2016-12-15 CN CN201621378966.XU patent/CN206366287U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492581A (en) * | 2016-12-15 | 2017-03-15 | 西安交通大学 | A kind of device and method of atomization turbulent flow agglomerated particle thing |
| CN111151388A (en) * | 2020-01-09 | 2020-05-15 | 刘根凡 | Accurate reunion ware |
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