CN104399367B - A kind of flue washing device with scaling shape orifice plate - Google Patents
A kind of flue washing device with scaling shape orifice plate Download PDFInfo
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- CN104399367B CN104399367B CN201410690318.7A CN201410690318A CN104399367B CN 104399367 B CN104399367 B CN 104399367B CN 201410690318 A CN201410690318 A CN 201410690318A CN 104399367 B CN104399367 B CN 104399367B
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Abstract
A kind of flue washing device with scaling shape orifice plate, including tower body, it is arranged on the circulation liquid storage tank below tower body, scaling shape orifice plate, spraying layer and demister it is disposed with from bottom to top inside tower body, tower body bottom is provided with smoke inlet, top is provided with absorption tower outlet, and the pipeline that circulation liquid storage tank is connected with the spray interlayer of tower body is disposed with slurry circulating pump, flow control valve and effusion meter；Spraying layer Jet with downward flow direction goes out oxidisability serosa, scaling shape orifice plate makes up flue gas and is sufficiently mixed along the spray liquid that wall is descending and caloic exchange, in gas-liquid collision process, tear liquid film and make the oblique flaring orifice plate endoporus of going out of gas-liquid mixture enter spraying layer and the space of scaling shape orifice plate, making liquid film is secondary-atomizing state, further enhances gas-liquid collision and mixing.
Description
Technical field
The present invention relates to flue gas pollutant purification and washing desulphurization denitration dedusting technology field, be specifically related to a kind of band
There is the flue washing device of scaling shape orifice plate.
Background technology
In China due to a large amount of uses of coal, substantial amounts of sulfur dioxide, nitrogen oxides and dust etc. are discharged
Pollutant, these pollutant mutually or can react with other pollutant in an atmosphere, produce serious
Atmospheric pollution, compromises the living environment of the mankind, and this is also the main contributor of Brownish haze phenomenon, hinders
The sustainable development of national economy.The thermal power plant of the up-to-date promulgation of country and Industrial Boiler standard limit of smog release,
The contaminant gases concentration of emissions such as dust, sulfur dioxide and nitrogen oxides are proposed more strict requirements.
At present to pollutant in flue gas, especially sulfur dioxide, nitrogen oxides and dust, removing adopt respectively
By Technologies such as desulfurizing tower, SCR and wet-esps.In order to make flue gas reach discharge standard, must
These several pollutant must be removed, these several techniques are combined not only Financial cost huge but also can take
Bigger physical space.Therefore, in a system, simultaneous SO_2 and NO removal dedusting has bigger advantage undoubtedly
And application prospect.
In industrial process exhaust treatment system, flue washing device is a kind of for removing particulate matter and pollutant
Effective equipment of gas componant.Its ultimate principle is to spray into absorption serosity in gas so that contained in waste gas
Contaminant gases is sufficiently mixed with the absorption serosity of ejection, corresponding reaction occurs, thus is able to pollutant
Gas componant separates removal from flue gas.
In existing flue washing device, flue gas flow rate in tower in same cross section flow velocity be the most uneven,
Some region flow velocity are high, and some region flow velocity are low.Solution is to arrange that in tower porous plate is to optimize in tower
Flue gas flow field is distributed, and improves degree of irregularity in tower, improves the mixing of liquid gas and strengthens heat and mass.But it is existing
Porous plate all uses and is distributed a large amount of column cavity on plate face, can play the effect of current-sharing, but gas disturbance
Strong not, the reaction with serosity is the most violent, it is impossible to enough gives full play to serosity and makees the absorption of pollutant component
With.And flue washing device only has single removal effect now, it is impossible to enough simultaneous SO_2 and NO removal dedustings.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, it is an object of the invention to provide a kind of with many contractings
Putting the flue washing device of shape orifice plate, this scaling shape orifice plate is by tapered orifice plate, cylindrical orifice plate and gradually discharge hole plate
Superposition forms, it is possible to is effectively increased speed when flue gas flows through internal surface of hole, thus effectively strengthens disturbing of flue gas
Dynamic, and in cylindrical hole, arrange the flow-disturbing atomization structure that can strengthen flue gas disturbance, make serosity secondary-atomizing,
The liquid film produced when this type of flow-disturbing atomization structure destroys or thinning washing serosity flows through cylindrical hole inner surface, enters
And be accelerated the flue gas after disturbance and carry up and tear further atomization, even if washing serosity produces secondary mist
Change, it is achieved flue gas is sufficiently mixed reaction with washing serosity；And wash serosity and there is oxidisability function, energy
Enough simultaneous SO_2 and NO removal dedustings, reduce the Financial cost individually removing equipment, in industrial processes tail gas one
Change processes has significant advantage.
For reaching object above, the present invention adopts the following technical scheme that
A kind of flue washing device with scaling shape orifice plate, including tower body 3, is arranged on following below tower body 3
Ring liquid storage tank 1, described tower body 3 is internal to be disposed with scaling shape orifice plate 4, spraying layer 7 from bottom to top and removes
Day with fog 5, tower body 3 bottom is provided with smoke inlet 2, and top is provided with absorption tower outlet 6, described circulation storage
Slurry circulating pump 10, flow control it is disposed with on the pipeline being connected between liquid pool 1 with the spraying layer 7 of tower body 3
Valve 9 processed and effusion meter 8；Described scaling shape orifice plate 4 is by tapered orifice plate 4-1, cylindrical perforated plate 4-2 and gradually
Reaming plate 4-3 superposition forms, and thickness regulates according to practical situation, and the scaling hole that superposition is formed is in scaling shape hole
Arrange in uniform array on plate 4 or be adjusted to uneven arranged accordingly according to flue gas is uneven；Institute
Stating scaling shape orifice plate 4, the tapered hole of the most tapered orifice plate 4-1 is identical with the flaring hole cone angle of flaring orifice plate 4-3
Or different, or it is processed as counter sink or cylindrical hole；The hole intermediate arrangement of described cylindrical perforated plate 4-2
Flow-disturbing atomization structure 4-4.
Described this flow-disturbing atomization structure 4-4 is to arrange female thread or layout in the hole of cylindrical perforated plate 4-2
A plurality of tinsel composition network structure or arrange spiral turbolator or arrange small-sized guide vane.
The when of flue gas flow rate height, flow-disturbing atomization structure 4-4 uses female thread, uses small-sized leading the when that flow velocity being low
Stream blade.
The hole intermediate arrangement same flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2 or arrange multiple not
With flow-disturbing atomization structure 4-4, select according to flue gas current intelligence.
There are anti-wear corrosion-resistant coating or employing in described scaling shape orifice plate 4 and flow-disturbing atomization structure 4-4 surface
The material of anticorrosive anti-wear.
The serosity of described spraying layer 7 ejection has oxidisability function, simultaneous SO_2 and NO removal dedusting, spraying layer 7
Arrange one layer or arranging multiplayer.
Described demister 5 uses broken line type or streamlined, arranges one layer or arranging multiplayer.
Described demister 5, spraying layer 7 and scaling shape orifice plate 4 are separate modular, use sealing bolt even
Connect, increase according to practical situation or reduce.
Described smoke inlet 2 is tangent with tower body 3, and tower body 3 bottom is long and narrow cone.
Deflector is arranged at the cone that tower body 3 bottom is long and narrow.
Compared to the prior art the present invention, has the advantage that
1, the present invention uses a kind of flue washing device with scaling shape orifice plate, by increasing capacitance it is possible to increase by orifice plate
Rotate flue gas flow rate, strengthen spray water film and the rotation disturbance of flue gas, exacerbate heat and mass transfer process, greatly
Increase serosity to the collision of polluter, contact and assimilation effect in flue gas, promote gas, liquid, solid
It is sufficiently mixed thus more fully reacts.Scale the shape in shape aperture, length can be according to the cigarette of practical situation
Tolerance and pressure reduction change flexible regulation, it is possible to arrange one or more layers, to reach the mass transfer of optimum
Effect.
2, spraying layer Jet with downward flow direction goes out oxidisability serosa, and flow-disturbing atomization structure makes up flue gas and along under wall
The spray liquid of row is sufficiently mixed and caloic exchange, tears liquid film and make gas-liquid mixture in gas-liquid collision process
Oblique flaring orifice plate endoporus of going out enters spraying layer and the space of scaling shape orifice plate, and making liquid film is secondary-atomizing shape
State, further enhances gas-liquid collision and mixes, and can increase the disturbance of flue gas, strengthening the effect of gas-liquid mixed
Really, increase the utilization rate of serosity, make reaction more fully, pollutant removing effect more preferable.
3, the present invention is by increasing the rotation flue gas disturbance of orifice plate, makes serosity form secondary-atomizing, exacerbates biography
Hot mass transfer process, greatly increases serosity to the collision of polluter, contact and assimilation effect in flue gas,
Promote gas, liquid, solid to be sufficiently mixed thus more fully react；There is the serosity of oxidisability, can be by NO
It is oxidized to N2O5It is dissolved in desulfurization spray liquid, realizes desulphurization and denitration and fine particle (PM) removing simultaneously,
Save the physical space of desulphurization and denitration and the triple separate reactors of wet electrical dust precipitator and expensive cost.
4, the present invention uses a kind of flue washing device with scaling shape orifice plate, sprays the slurry of oxidisability function
Pollutant in flue gas are carried out integration removing, compared with using single removing means, greatly subtract by liquid
Lack space, reduce Financial cost.
5, the present invention uses the sprayed slurry of oxidisability that contaminant gases in flue gas and granule carry out reaction suction
Receiving, pollute little, removal efficiency is high, will not produce secondary pollution, and economy is high.
6, the present invention uses a kind of flue washing device with scaling shape orifice plate, and flue gas tangentially enters from entrance
Tower body bottom, rotates along wall and rises, increase at dwell time in the tower, and distribution is more uniform, is conducive to
Scaling shape orifice plate region carries out reactive absorption.
7, the present invention uses modularized design, and demister unit, spray unit and scaling shape orifice plate absorb single
Unit all uses modularized design, and each module uses sealing bolt to connect, and can increase as required or reduce
Module, arranges and regulates and controls more flexible, compact conformation, it is simple to install and dismantle.
8, the present invention scales shape orifice surface and scribbles resistant material, adds service life, reduces equipment dimension
Repair, change the cost of orifice plate.
9, the present invention use a kind of with scaling shape orifice plate flue washing device, have volume little, arrange spirit
Live, be simple to manufacture, adapt to process the multiple uses such as small-sized gas cleaning from large scale industry boiler smoke.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of flue washing device with scaling shape orifice plate in the present invention.
Fig. 2 a is the side view scaling shape orifice plate in the present invention.
Fig. 2 b is the front view scaling shape orifice plate in the present invention.
Fig. 3 is the schematic perspective view of cylindrical perforated plate in the present invention.
Fig. 4 a is the schematic perspective view of a kind of flow-disturbing atomization structure in the present invention on cylindrical perforated plate.
Fig. 4 b is the schematic perspective view of the another kind of flow-disturbing atomization structure in the present invention on cylindrical perforated plate.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As it is shown in figure 1, a kind of flue washing device with scaling shape orifice plate of the present invention, including tower body 3, if
Putting the circulation liquid storage tank 1 below tower body 3, described tower body 3 is internal is disposed with scaling shape hole from bottom to top
Plate 4, spraying layer 7 and demister 5, tower body 3 bottom is provided with smoke inlet 2, and top is provided with absorption tower
Outlet 6, described circulation liquid storage tank 1 is disposed with serosity on the pipeline being connected between the spraying layer 7 of tower body 3
Circulating pump 10, flow control valve 9 and effusion meter 8；
As shown in Figure 2 a and 2 b, described scaling shape orifice plate 4 is by tapered orifice plate 4-1, cylindrical perforated plate
4-2 and flaring orifice plate 4-3 superposition composition, thickness is according to practical situation flexible, the scaling hole that superposition is formed
Scaling shape orifice plate 4 is arranged in uniform array, it is possible to be adjusted to inequality accordingly according to flue gas is uneven
Even arranged；
The gradually rose bit of described scaling shape orifice plate 4, the tapered hole of the most tapered orifice plate 4-1 and flaring orifice plate 4-3
Angle can be the same or different, it is possible to is processed as counter sink or cylindrical hole.
As shown in Fig. 2, Fig. 3, Fig. 4 a and Fig. 4 b, the hole intermediate arrangement of described cylindrical perforated plate 4-2
Flow-disturbing atomization structure 4-4.
As it is shown on figure 3, described this flow-disturbing atomization structure 4-4 is to arrange in the hole of cylindrical perforated plate 4-2
Female thread, it is possible to arrange the network structure that a plurality of tinsel forms in hole, it is possible to arrange that in hole spiral is disturbed
Stream is sub or arranges that small-sized guide vane etc. can realize the structure of flow-disturbing effect.
As the preferred embodiment of the present invention, when flue gas flow rate height when, flow-disturbing atomization structure 4-4 preferentially adopts
With female thread, the when that flow velocity being low, preferentially use small-sized guide vane.
The hole intermediate arrangement same flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2 or arrange multiple not
With flow-disturbing atomization structure 4-4, select according to flue gas current intelligence.
As the preferred embodiment of the present invention, described scaling shape orifice plate 4 and flow-disturbing atomization structure 4-4 surface
There is anti-wear corrosion-resistant coating or use the material of anticorrosive anti-wear.
The serosity of described spraying layer 7 ejection has oxidisability function, simultaneous SO_2 and NO removal dedusting, spraying layer 7
Arrange one layer or arranging multiplayer.
Described demister 5 uses broken line type or streamlined, arranges one layer or arranging multiplayer.
Described demister 5, spraying layer 7 and scaling shape orifice plate 4 are separate modular, use sealing bolt even
Connect, increase according to practical situation or reduce.
Described smoke inlet 2 is tangent with tower body 3, and tower body 3 bottom is long and narrow cone.
As the preferred embodiment of the present invention, at the cone that tower body 3 bottom is long and narrow, arrange deflector.
The operation principle of the present invention is: flue gas tangentially enters tower body 3, spiral from smoke inlet 2, passes through
Scaling shape orifice plate 4, during by scaling shape orifice plate 4, flue gas is accelerated and is rotated, and swirl-flow devices will
Strengthen flue gas and spray liquid is sufficiently mixed and the circumferential wall of oblique impacting desulfurization tower, in block desulfurizing tower surrounding
The short circuit air flow risen, the flue gas turbulivity after acceleration quickly increases, with the absorption sprayed from spraying layer 7
The flow-disturbing atomization structures such as serosity preferably mixes and reacts, female thread can make at scaling shape orifice plate endoporus table
The serosity liquid film formed on face is easily accelerated the flue gas of disturbance and carries up, and is torn and is again atomized, and carries
The high utilization rate absorbing serosity, pollutant removing effect is more preferable.Contaminant gases in flue gas and particulate matter
Absorbed serosity parcel, reactive absorption enters and enters recycle slurry liquid pool 1 in liquid, reacted more cleans
Flue gas continues to rise, and after demister 5 is except mist, is discharged by exhanst gas outlet 6.
Claims (8)
1. the flue washing device with scaling shape orifice plate, it is characterized in that: include tower body (3), it is arranged on the circulation liquid storage tank (1) of tower body (3) lower section, described tower body (3) is internal is disposed with scaling shape orifice plate (4) from bottom to top, spraying layer (7) and demister (5), tower body (3) bottom is provided with smoke inlet (2), top is provided with absorption tower outlet (6), described circulation liquid storage tank (1) is disposed with slurry circulating pump (10) on the pipeline being connected between the spraying layer (7) of tower body (3), flow control valve (9) and effusion meter (8)；
Described scaling shape orifice plate (4) is made up of tapered orifice plate (4-1), cylindrical perforated plate (4-2) and flaring orifice plate (4-3) superposition, thickness regulates according to practical situation, and the scaling hole that superposition is formed is arranged in uniform array on scaling shape orifice plate (4) or is adjusted to uneven arranged accordingly according to flue gas is uneven；
Described scaling shape orifice plate (4), the tapered hole of the most tapered orifice plate (4-1) is identical or different with the flaring hole cone angle of flaring orifice plate (4-3), or is processed as counter sink or cylindrical hole；
Hole intermediate arrangement flow-disturbing atomization structure (4-4) of described cylindrical perforated plate (4-2)；
Described flow-disturbing atomization structure (4-4) is to arrange female thread in the hole of cylindrical perforated plate (4-2) or arrange network structure that a plurality of tinsel forms or arrange spiral turbolator or arrange small-sized guide vane.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterised in that: the when of flue gas flow rate height, flow-disturbing atomization structure (4-4) uses female thread, uses small-sized guide vane when that flow velocity being low.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterized in that: hole intermediate arrangement same flow-disturbing atomization structure (4-4) of described cylindrical perforated plate (4-2) or arrange multiple different flow-disturbing atomization structure (4-4), select according to flue gas current intelligence.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterised in that: there is anti-wear corrosion-resistant coating on described scaling shape orifice plate (4) and flow-disturbing atomization structure (4-4) surface or uses the material of anticorrosive anti-wear.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterized in that: the serosity that described spraying layer (7) sprays has oxidisability function, simultaneous SO_2 and NO removal dedusting, spraying layer (7) arranges one layer or arranging multiplayer.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterised in that: described demister (5) uses broken line type or streamlined, arranges one layer or arranging multiplayer.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterized in that: described demister (5), spraying layer (7) and scaling shape orifice plate (4) are separate modular, employing sealing bolt connects, and increases according to practical situation or reduces.
A kind of flue washing device with scaling shape orifice plate the most according to claim 1, it is characterized in that: described smoke inlet (2) is orthogonal with tower body (3) and updip certain angle, and tower body (3) bottom is long and narrow cone.
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|---|---|---|---|
| CN201410690318.7A CN104399367B (en) | 2014-11-25 | 2014-11-25 | A kind of flue washing device with scaling shape orifice plate |
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| CN201410690318.7A CN104399367B (en) | 2014-11-25 | 2014-11-25 | A kind of flue washing device with scaling shape orifice plate |
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| CN104399367B true CN104399367B (en) | 2016-08-17 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064017A (en) * | 2016-08-08 | 2016-11-02 | 辽宁信威环保科技有限公司 | Oxidoreduction is with journey desulfuring and denitrifying apparatus |
| CN108211743A (en) * | 2018-03-09 | 2018-06-29 | 无锡雪浪环境科技股份有限公司 | A kind of deacidifying flue gas denitrification integrated device and its application method |
| CN108704449A (en) * | 2018-05-23 | 2018-10-26 | 帕提古丽·奥布力 | A kind of synchronized desulfuring and denitrifying reactive absorption tower |
| CN111097249B (en) * | 2020-01-10 | 2021-06-29 | 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 |
| CN112755748A (en) * | 2020-12-21 | 2021-05-07 | 通化金山银山环保设备制造有限公司 | Boiler dual-alkali desulphurization method |
| CN112827333B (en) * | 2020-12-21 | 2023-02-03 | 国家能源蓬莱发电有限公司 | Atomization absorption synergistic device of wet flue gas desulfurization absorption tower |
| CN113041767A (en) * | 2021-04-02 | 2021-06-29 | 刘森 | High-efficiency electro-hydraulic dust removal method and system for dust-containing flue gas |
| CN114307613B (en) * | 2022-01-12 | 2022-12-06 | 湖南众兴环保科技有限公司 | Flue gas desulfurization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203355602U (en) * | 2013-07-22 | 2013-12-25 | 北京国电清新环保技术股份有限公司 | Wet desulphurization system with rotational flow windows |
| CN203598685U (en) * | 2013-12-09 | 2014-05-21 | 齐琏发 | Turbofan pressure stabilizing, desulfurizing, denitrifying and flue gas homogenizing device |
| CN203724978U (en) * | 2013-12-09 | 2014-07-23 | 杭州盛尔气体设备有限公司 | Gas diffusion structure of lower end socket of adsorbing tower |
| CN204320092U (en) * | 2014-11-25 | 2015-05-13 | 西安交通大学 | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate |
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