CN209714650U - The baffle plate type demisting deduster of built-in cooling - Google Patents
The baffle plate type demisting deduster of built-in cooling Download PDFInfo
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- CN209714650U CN209714650U CN201920330662.3U CN201920330662U CN209714650U CN 209714650 U CN209714650 U CN 209714650U CN 201920330662 U CN201920330662 U CN 201920330662U CN 209714650 U CN209714650 U CN 209714650U
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Abstract
The utility model belongs to technical field of environment protection equipment, and in particular to cooling baffle plate type demisting deduster built in one kind.Its top for being installed on desulfurizing tower, including several cooling tubes are welded with baffle plate fin on at least partly described cooling tube.By carrying out cooling condensation to flue gas, the amplification so that fine droplet, dust are reunited in baffle plate generates sufficiently large inertia and is effectively intercepted by baffle plate, to improve demisting efficiency of dust collection the utility model.It can be transformed on the basis of original demister, without expanding, increasing absorption tower, invest low.
Description
Technical field
The utility model belongs to technical field of environment protection equipment, and in particular to one kind is suitable for wet method flue gas-desulfurizing absorption tower
Built-in cooling baffle plate type demisting deduster.
Background technique
In flue gas desulphurization field domestic now, limestone-gypsum wet flue gas desulfurization technology has become
Prevailing technology, most widely used, desulfuration efficiency is up to 95% or more.
In this wet desulfurization of flue gas by limestone-gypsum method technique, desulfurizing tower is mostly traditional reverse-flow spray column.The spray
Tower is divided into three parts from lower to upper, is successively slurry pool, smoke absorption area and mist eliminating zone.Wherein, slurry pool mainly stores up
Desulfurizer slurry is deposited, slurries are mainly made of lime stone, part of sulfuric acid calcium and calcium sulfite in the pond；Smoke absorption area is then slurry
Liquid pool top to this region of spraying layer lower part, flue gas is effectively contacted in the region with desulfurization slurry, and gas-liquid mass transfer is completed
Absorption process；Mist eliminating zone then refers to the demister region above the spraying layer of absorption tower, is further purified in the region flue gas,
The droplet carried secretly in removal flue gas, so that flue gas substantially reduces the corrosivity of desulfurizing tower or desulfurization follow-up equipment, and
And fouling can also be reduced, the loss of absorbent and water is reduced, neat stress discharge desulfurizing tower is eventually become.
Demister is the key equipment in desulphurization system for wet desulfurizing process.Demister is typically mounted on desulfurizing tower
Top, for trapping the drop being cleaned after desulfurization in flue gas, to protect its follow-up equipment or flue not to be corroded and stain.If
Blocking occurs for demister or demisting efficiency is low, can all desulphurization system be caused to be unable to operate normally, so the quality of its performance
Entire desulphurization system is influenced huge.
Although demister is many kinds of, baffle type mist eliminator is simple with its structure fabrication, processing capacity is big, volume
It is small, less scaling, pressure drop resistance is small, can be realized the advantages that blowdown of serialization, show superior processing gas-liquid separation energy
Power and be widely applied by industrial production.Current baffle plate demister is chiefly used in the de- of the bulky grain drop that flue gas after desulfurizing tower carries
It removes, but there are problems that low efficiency for the removing of the ultra-fine droplet of condensation and minute dusts of small particle.
With the pay attention to day by day to environmental protection, the control of dust is required also increasingly strict.Chalk dust removing is gone generally to adopt now
With bundled tube demister and wet cottrell.The effect that demister generates centrifugal inertial force with high-speed rotational is restrained, at it
Under effect, droplet and the mutual perikinetic aggregation of dust are thrown to barrel trapping at larger drop.It restrains demister initial cost to save, fortune
Row expense is low, occupies little space, and tower section is made full use of to pass through area.Wet cottrell is to make yin by DC high-voltage
Polar curve space gases ionization nearby, dust is charged in the electric field and moves under the action of electric field force to anode plate, when moving to
It when anode plate surface, flows down and is removed with liquid film, deashing, while dust shape are carried out using liquid wash dust pole surface
It is discharged at slurries.Its dust collection performance is unrelated with Dust Characteristics, is applicable to high temperature fume dust removal, can effectively collect SO3 droplet
And other fine solid particles.
In the two, the problem is that the former is to load-sensitive, if restraining demisting in the case where underload low operating condition
Device efficiency will be greatly reduced, and notably fail.Though the dust removing effects of the latter are good, investment height sensitive to Dust Characteristics, water power consumption
High, land occupation is greatly, safety in operation is low, operation expense is high.
So facing nowadays increasingly strict environmental requirement, preferably to reach dehumidifying dust removing effects, now need to wide
The general baffle type mist eliminator used improves, its demisting efficiency of dust collection is made to effectively improve, in its limited space
It is improved to the little particle for including in flue gas, the removal efficiency of droplet, to reach better dedusting defogging effect.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide baffle plate types cooling built in one kind to remove
Mist deduster, by carrying out cooling condensation to flue gas, the amplification so that fine droplet, dust are reunited in baffle plate generates foot
It reaches big inertia and is effectively intercepted by baffle plate, to improve demisting efficiency of dust collection.
To realize the above-mentioned technical purpose, the following technical solution is employed for the utility model: the baffle plate type of built-in cooling removes
Mist deduster is installed on the top of desulfurizing tower；Including several cooling tubes, baffle plate wing is welded on at least partly described cooling tube
Piece.Cooling tube is cooling medium channel, and the baffle plate fin being welded on cooling tube is both demister element, while being also cooling tube
Extension cooling fins.
When flue gas carries steam, dust passes through demister, interception of the biggish droplet due to self inertia and corrugated sheet
It acts on and is removed, while cooling medium forces the vapor in saturated flue gas to undergo phase transition, or be directly condensed into small mist
Drop, increases the droplet concentration in regional area and enhances intergranular collision probability, finely ground particles is promoted to grow up and take off
It removes；Or surface condensation occurs and wet particle by the nuclei of condensation of fine particle, it improves adherency between subparticle and grows up.
Inertia, interception, Blang diffusion, thermophoresis and dissipate swimming the effects of under, promote the mutual making contact of subparticle and constantly grow up, coagulate
Particulate matter after poly- is largely removed on demister with gas shock, thus purify flue gas preferably, it can mistake
Reach emission request
The cooling tube presents the corresponding arrangement of lower leaf as a preferred technical solution,；Cooling tube and lower layer described in upper layer
Corresponding cooling tube is one group of cooling tube group, is respectively welded the baffle plate fin in cooling tube group described in every group.
The cooling medium of the cooling tube can select cooling water, can also select compressed air in water-deficient area.
Select compressed air when, need by vortex tube carry out energy conversion, the cooling medium inlet of the cooling tube with
The cold air end of vortex tube connects.Vortex tube is well-known technique, it is a kind of very simple energy separation device of structure, mainly by
Nozzle, minor air cell, separation orifice and cold and hot two end pipe composition.Compressed gas expands in nozzle when work, then with very high
Speed enters vortex tube along a tangential direction.Air-flow when high speed rotation, is separated into temperature not after vortex transformation in vortex tube
Equal two parts air-flow: one end generates cold air, and one end generates hot-air.Vortex tube can by adjust hot gas end valve come
The flow of regulating gas and the height of cold air end temperature, obtain satisfied cold air parameter --- the compressed air of input and output
Cold air ratio.
As a preferred technical solution, the cooling tube and the baffle plate fin be all made of 2205 two phase stainless steels or with
Upper material.
Due to the adoption of the above technical scheme, the utility model have it is at least following the utility model has the advantages that
(1) it can be transformed on the basis of original demister, without expanding, increasing absorption tower, invest low；
(2) by the cooling of cooling medium, flue-gas temperature can be effectively reduced, so that fine droplet, particulate matter are reunited,
Grow up into big droplet, bulky grain and removed, efficient demisting dedusting may be implemented；
(3) it is gathered dust, therefore Dust Characteristics is distinguished little by agglomeration techniques；
(4) in underload, gas residence time is long, cooling abundant, there is more good agglomerating effect；
(5) compared with tube bank demister and wet cottrell, system resistance is small；
(6) when using compressed air as cooling source, due to reducing loss of water, it can be used for water-deficient area.
Detailed description of the invention
Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model
It encloses.Wherein:
Fig. 1 is the mounting structure schematic diagram of the utility model embodiment one；
Fig. 2 is the mounting structure schematic diagram of the utility model embodiment two；
Fig. 3 is the demisting dust-cleaning principle schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further described.In the following detailed description, only pass through
Bright mode describes certain exemplary embodiments of the utility model.Undoubtedly, those skilled in the art can be with
It recognizes, it, can be with a variety of different modes to described without departing from the spirit and scope of the utility model
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.
Embodiment one
As shown in Figure 1, the baffle plate type demisting deduster of built-in cooling, is installed on the top of desulfurizing tower 1；If including dry and cold
But pipe 2, cooling tube 2 described in the present embodiment present the corresponding arrangement of lower leaf, the cooling corresponding with lower layer of cooling tube 2 described in upper layer
Pipe 2 is one group of cooling tube group, baffle plate fin 3 is respectively welded in cooling tube group described in every group, certain cooling tube 2 is as cooling
Medium channel, arrangement mode can there are many kinds of, all should belong to the protection range of the utility model, details are not described herein；
The baffle plate fin 3 being welded on cooling tube 2 is both demister element, while being also the extension cooling fins of cooling tube 2.
To improve antiseptic property, the cooling tube 2 and the baffle plate fin 3 be all made of 2205 two-phase stainless steel materials and
The above material.
In the present embodiment, the cooling medium of cooling tube 2 uses compressed air, the cooling medium inlet and vortex of cooling tube 2
The cold air end of pipe 4 connects.By the refrigeration effect of vortex tube 4, effectively enhance the demisting efficiency of dust collection of demister.And vortex tube
4 is very convenient reliable, only need to take on the spot source that can work.It, can be from when compressed air enters the cold air generator of vortex tube 4
Cold air end obtains cold air, and hot gas end obtains hot gas.Cold air is passed through in cooling tube 2 by pipeline, reduces flue-gas temperature, so that saturation
Wet flue gas condenses into steam, forms big droplet in conjunction with mist droplet, dust by baffle plate fin 3 and intercepts trapping.And it is vortexed
Pipe 4 is small in size, light-weight, anticorrosive using stainless steel material, anti-oxidant, resistant to high temperatures, and production cold air is rapid, can be fast by valve
Velocity modulation section controls the temperature and uninterrupted of vortex tube cold airflow by adjusting 4 hot gas end valve door of vortex tube, controlled with this
Temperature processed reaches better demisting dust removing effects.
With reference to Fig. 1 and Fig. 3, blast injection is into behind 4 minor air cell of vortex tube, and air-flow is to be up to 1,000,000 turns per minute
Speed is rotating to vortex tube hot gas and brings out mouth, and a part of air-flow is flowed out by control valve, after remaining gas is blocked, in original
Air flow pattern is reversely rotated with same revolving speed, and flows to vortex tube cold air end, and cold air is entered within cooling tube 2 by pipeline, and
When containing droplet there is the saturation wet flue gas of certain temperature to pass through baffle plate fin 3, cooling is contacted with cold air, saturation wet flue gas is fast
Quickly cooling is solidifying to form steam, using small droplet and dust as the nuclei of condensation, forms big droplet, the droplet being captured under gravity by
Collect discharge.
Embodiment two
The present embodiment is identical as the cooling demisting dust-cleaning principle of embodiment one, is all wet type phase transformation cohesion, only the two institute
The cooling medium used is different.The cooling source of the present embodiment is the recirculated cooling water by desulphurization system, to reduce flue-gas temperature,
Wet type phase transformation coacervation process is completed, the demisting efficiency of demister is enhanced, promotes dedusting effect, therefore does not need installation vortex tube,
As shown in Figure 2.
The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model
It encloses.Any those skilled in the art, that is made under the premise of not departing from the conceptions and principles of the utility model is equal
Variation and modification, should belong to the range of the utility model protection.
Claims (6)
1. cooling baffle plate type demisting deduster, is installed on the top of desulfurizing tower built in；It is characterized by comprising several coolings
It manages, is welded with baffle plate fin on at least partly described cooling tube.
2. built-in cooling baffle plate type demisting deduster as described in claim 1, it is characterised in that: the cooling tube is presented
The corresponding arrangement of lower leaf；The cooling tube corresponding with lower layer of cooling tube described in upper layer is one group of cooling tube group, cooling tube described in every group
The baffle plate fin is respectively welded in group.
3. baffle plate type demisting deduster as described in claim 1 built-in cooling, it is characterised in that: the cooling tube it is cold
But medium is cooling water.
4. baffle plate type demisting deduster as described in claim 1 built-in cooling, it is characterised in that: the cooling tube it is cold
But medium is compressed air.
5. baffle plate type demisting deduster as claimed in claim 4 built-in cooling, it is characterised in that: the cooling tube it is cold
But the cold air end of medium entrance and vortex tube connects.
6. such as built-in cooling baffle plate type demisting deduster described in any one of claim 1 to 5, it is characterised in that: described
Cooling tube and the baffle plate fin are all made of 2205 two-phase stainless steel materials and the above material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330662.3U CN209714650U (en) | 2019-03-15 | 2019-03-15 | The baffle plate type demisting deduster of built-in cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330662.3U CN209714650U (en) | 2019-03-15 | 2019-03-15 | The baffle plate type demisting deduster of built-in cooling |
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| CN209714650U true CN209714650U (en) | 2019-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110882611A (en) * | 2019-12-18 | 2020-03-17 | 安徽工业大学 | Boiler flue gas whitening system |
| CN113082855A (en) * | 2021-03-22 | 2021-07-09 | 淮阴工学院 | Baffle plate demister and working method thereof |
| CN114849395A (en) * | 2022-05-24 | 2022-08-05 | 上海应用技术大学 | Ultrasonic demister |
| CN116272199A (en) * | 2023-02-27 | 2023-06-23 | 北京建筑大学 | Multilayer treatment type atmosphere treatment equipment based on environmental treatment |
-
2019
- 2019-03-15 CN CN201920330662.3U patent/CN209714650U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110882611A (en) * | 2019-12-18 | 2020-03-17 | 安徽工业大学 | Boiler flue gas whitening system |
| CN110882611B (en) * | 2019-12-18 | 2024-05-24 | 安徽工业大学 | Boiler flue gas whitening system |
| CN113082855A (en) * | 2021-03-22 | 2021-07-09 | 淮阴工学院 | Baffle plate demister and working method thereof |
| CN114849395A (en) * | 2022-05-24 | 2022-08-05 | 上海应用技术大学 | Ultrasonic demister |
| CN114849395B (en) * | 2022-05-24 | 2024-01-30 | 上海应用技术大学 | Ultrasonic demister |
| CN116272199A (en) * | 2023-02-27 | 2023-06-23 | 北京建筑大学 | Multilayer treatment type atmosphere treatment equipment based on environmental treatment |
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