CN106362536B - A kind of device grown up based on steam phase transformation strengthening fine grained - Google Patents
A kind of device grown up based on steam phase transformation strengthening fine grained Download PDFInfo
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- CN106362536B CN106362536B CN201610959371.1A CN201610959371A CN106362536B CN 106362536 B CN106362536 B CN 106362536B CN 201610959371 A CN201610959371 A CN 201610959371A CN 106362536 B CN106362536 B CN 106362536B
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- phase transformation
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- phase change
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
Abstract
The invention discloses a kind of device grown up based on steam phase transformation strengthening fine grained, including level-one steam phase change chamber, bipolar charge area, bulky grain collecting region, the phase transformation of two level steam and coalescence room；First order phase change room bottom is equipped with gas inlet, and air distribution plate is equipped at gas inlet；First order phase change room top is equipped with inlet valve and spray equipment and exhanst gas outlet；What is be connected with exhanst gas outlet is air distribution plate；The left end in bipolar charge area is connected with air distribution plate；The right end in bipolar charge area is connected with bulky grain collecting region；The two level steam phase transformation is equipped with inlet valve and spray equipment and exhanst gas outlet with coalescence room top, and side wall is equipped with electrode plate.The present invention reduces steam contention of the large-size particles to small size particle to a certain extent, simultaneously using its surface polarity is increased to the charged mode of little particle, steam is more advantageous in the condensation growth on little particle surface and uses coagulation simultaneously and further strengthens short grained grow up.
Description
Technical field
The invention belongs to be based on steam phase transformation flue gas fine particle is promoted to grow up technical field of research, more particularly to a kind of base
In the device that steam phase transformation strengthening fine grained is grown up.
Background technology
Fine particle PM2.5 pollutions have become atmospheric environment problem outstanding, and PM2.5 can not only be entered by respiratory system
Human body is deposited on lung and causes to seriously endanger to health, and leads to the environment such as atmospheric visibility reduction, photochemical fog
One of an important factor for problem.However conventional dust removal technology is very low to the arresting efficiency of PM2.5, in quantity, occupies flying dust quantity
90% or more fine grained is directly discharged into air because cannot effectively remove.PM2.5 emission treatment modes are mainly adopted at present
The setting pretreatment facility before deduster or washer is taken, makes it through and adds again after physically or chemically acting on long great achievement larger particles
With removing, wherein growing up into the important research route of removing PM2.5 preconditioning techniques using steam phase transformation promotion fine particle
One of.The fine particle mechanism of growing up is promoted to be using steam phase transformation：In supersaturated environments, water vapour is using fine grained as core shape
At embryo's drop, and in the further condensation growth of embryo's drop at the dust-laden drop of bigger.But studies have shown that for 0.1-1um
Fine grained be difficult to be activated to grow up under conventional supersaturated condition, and of relatively large-sized fine grained and small particle
The problem of being competed there is also steam between grain, this makes short grained steam condition of growing up more difficult.And simple raising
It is prodigious that degree of supersaturation, which activates condensation growth energy consumption of the steam on small size particle surface,.
Invention content
The present invention be solve steam phase transformation promote fine particle growth process in small particle size range particle because of degree of supersaturation not
Enough and bulky grain with its fight for steam and so that little particle is grown up the problem of being obstructed, proposition one kind is based on thin of steam phase transformation strengthening
The big device of grain length.
The technical solution adopted by the present invention is：A kind of device grown up based on steam phase transformation strengthening fine grained, including level-one
Steam phase change chamber, bipolar charge area, bulky grain collecting region, the phase transformation of two level steam and coalescence room；
The level-one steam phase change chamber bottom is equipped with gas inlet one, and the top of gas inlet one is equipped with air distribution plate one；One
The top of grade steam phase change chamber is equipped with spray equipment one, and spray equipment one is connect with inlet valve one；Level-one steam phase change chamber
Top is equipped with exhanst gas outlet one；
The exhanst gas outlet one is connect by air distribution plate two with bipolar charge area, and bipolar charge area connects with bulky grain collecting region
It connects；The top and bottom in the bipolar charge area are equipped with the negative and positive two-stage electrode charging area being separated from each other；The bulky grain is collected
Area is equipped with the powder collection pole plate being separated from each other；
The side of the two level steam phase transformation and coalescence room is equipped with gas inlet two, gas inlet two and bulky grain collecting region
The top of connection, gas inlet two is equipped with air distribution plate three；The phase transformation of two level steam is equipped with spray equipment two, spray with coalescence room top
Device two is connect with inlet valve two；The phase transformation of two level steam and coalescence ceiling portion are equipped with exhanst gas outlet two, the phase transformation of two level steam with
Coalescence room side wall is equipped with electrode plate, and the phase transformation of two level steam is equipped with water discharging valve with coalescence room bottom；
The cross-sectional area of the air distribution plate one, air distribution plate two and air distribution plate three respectively with level-one steam phase transformation chamber cross-section
Product, bipolar charge area entrance cross-sectional area, the phase transformation of two level steam are identical as coalescence chamber cross-section product.
The property of flue gas of the present invention is high temperature and humidity or low temperature and high relative humidity dusty gas.
Preferably, level-one steam phase change chamber, the phase transformation of two level steam and the shape of coalescence room are cylinder.
Preferably, floor is all made of good heat preservation thermal insulation outside level-one steam phase change chamber, the phase transformation of two level steam and coalescence room
Material ensures heat exchange not to occur with the external world.
Preferably, mist droplet particle size ranging from 1-5um caused by the spray equipment one, the spray equipment two are produced
Raw mist droplet particle size ranging from 0.05-2um.
Advantageous effect：A kind of device grown up based on steam phase transformation strengthening fine grained provided by the invention can be directed to difference
The fine grained classification of particle size range promote it to grow up using different supersaturation and degree and mode, reduce to a certain extent big
Steam contention of the particles to small size particle is both to be conducive to steam at small using to the charged increase polarity of little particle
The condensation growth on grain surface；And also using steam phase transformation coupling coagulation and mode to combine promotion, small particle is fine grain grows up,
Reduce steam energy consumption.
Description of the drawings
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of device grown up based on steam phase transformation strengthening fine grained, including level-one steam phase change chamber 1, it is double
Pole charging area 8, bulky grain collecting region 9, the phase transformation of two level steam and coalescence room 10；
1 bottom of level-one steam phase change chamber is equipped with gas inlet 1, and the top of gas inlet 1 is equipped with air distribution plate one
3；The top of level-one steam phase change chamber 1 is equipped with spray equipment 1, and spray equipment 1 is connect with inlet valve 1；Level-one steam
The top of phase change chamber 1 is equipped with exhanst gas outlet 1；The exhanst gas outlet 1 is connect by air distribution plate 27 with bipolar charge area 8, double
Pole charging area 8 is connect with bulky grain collecting region 9；The top and bottom in the bipolar charge area 8 are equipped with the negative and positive two being separated from each other
Grade electrode charging area；The bulky grain collecting region 9 is equipped with the powder collection pole plate being separated from each other；The two level steam phase transformation with it is solidifying
And the side of room 10 is equipped with gas inlet 2 11, gas inlet 2 11 connect with bulky grain collecting region 9, gas inlet 2 11 it is upper
Side is equipped with air distribution plate 3 12；The phase transformation of two level steam and 10 top of coalescence room are equipped with spray equipment 2 14, spray equipment 2 14 with into
Penstock 2 13 connects；The phase transformation of two level steam is equipped with exhanst gas outlet 2 15, the phase transformation of two level steam and coalescence with 10 top of coalescence room
10 side wall of room is equipped with electrode plate, and the phase transformation of two level steam is equipped with water discharging valve 16 with 10 bottom of coalescence room；The air distribution plate 1, cloth
The cross-sectional area of aerofoil 27 and air distribution plate 3 12 is horizontal with 1 cross-sectional area of level-one steam phase change chamber, 8 entrance of bipolar charge area respectively
Sectional area, the phase transformation of two level steam are identical as 9 cross-sectional area of coalescence room.
The shape of the level-one steam phase change chamber 1 and the phase transformation of two level steam and coalescence room 10 is cylinder；The level-one water
Vapour phase change chamber 1 and the phase transformation of two level steam are all made of good heat-insulation material with 10 outer layer of coalescence room, ensure not send out with the external world
Raw heat exchange；Mist droplet particle size ranging from 1-5um caused by the spray equipment 1 of the level-one steam phase change chamber 1；Described two
Mist droplet particle size ranging from 0.05-2um caused by spray equipment 2 14 of the grade steam phase transformation with coalescence room 10.
By taking high temperature and humidity flue gas as an example, illustrate the method that reinforcing fine grained is grown up using apparatus of the present invention.Flue gas is from flue gas
Import 1 enters level-one steam phase change chamber 1, and opening inlet valve 1 is passed through cold less than flue-gas temperature to spray equipment 1
Water, for high-temperature flue gas rapidly to the small droplet heat transfer of low temperature, flue gas is cooling rapidly to reach supersaturated (degree of supersaturation：1.1-2)；One side
Face, steam is condensed in particle surface promotes fine grained to grow up, on the other hand, due to grain size and the fine grained particle size of small droplet
Close, fine grain grow up can also be promoted by enhancing touching between fine grained and acting on.
Subsequent flue gas enters bipolar charge area 8 through exhanst gas outlet 1, and flue gas is uniformly to entering bipolar charge area 8
Negative and positive two-stage electrode charging area makes the particle swarm grown up by level-one steam phase change chamber 1 negatively charged and positive electricity respectively；With that is, attached
The particle swarm of upper charge enters bulky grain collecting region 9, larger particle is drawn to respectively in particle swarm deposited on dust collection plate under
Come, the particle of small particle range can not still be trapped.
The flue gas of particle containing small particle range enters the phase transformation of two level steam and coalescence room by smoke inlet 2 11
10, open inlet valve 2 13 and be passed through high-temperature-hot-water or steam to spray equipment 2 14, flue gas after cooling and high-temperature-hot-water or
Steam heat and mass continues to feed water vapour molecule to gas phase, and flue gas is made further to reach supersaturated (degree of supersaturation：2-4)；Together
When to the electrode plate of the phase transformation of two level steam and 10 side wall of coalescence room be passed through DC power supply, make the small size particle with positive and negative charge
Coagulation occurs simultaneously；On the one hand, the electrification of small size particle surface enhances surface polarity and is more conducive to steam in the solidifying of its surface
Knot is grown up；Another aspect coagulation and promote small size particle touch and act on promote small size particle between reunion so that grain size is increased
Add, according to Kelvin equation, degree of supersaturation is bigger needed for the smaller particle growth of grain size, can so reduce and spray into hot water or steaming
The degree of supersaturation of the amount of vapour, the phase transformation of two level steam and coalescence room 10 need not be too high；Small size particle the phase transformation of two level steam with
Coalescence room 10 can strengthen the particle for the particle size range that long great achievement can remove.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not
The available prior art of specific each component part is realized.
Claims (4)
1. a kind of device grown up based on steam phase transformation strengthening fine grained, it is characterised in that：It is bipolar including level-one steam phase change chamber
Charging area, bulky grain collecting region, the phase transformation of two level steam and coalescence room；
The level-one steam phase change chamber bottom is equipped with gas inlet one, and the top of gas inlet one is equipped with air distribution plate one；Level-one water
The top of vapour phase change chamber is equipped with spray equipment one, and spray equipment one is connect with inlet valve one；The top of level-one steam phase change chamber
Equipped with exhanst gas outlet one；
The exhanst gas outlet one is connect by air distribution plate two with bipolar charge area, and bipolar charge area is connect with bulky grain collecting region；
The top and bottom in the bipolar charge area are equipped with the negative and positive two-stage electrode charging area being separated from each other；The bulky grain collecting region is set
There is the powder collection pole plate being separated from each other；
The side of the two level steam phase transformation and coalescence room is equipped with gas inlet two, and gas inlet two connects with bulky grain collecting region
It connects, the top of gas inlet two is equipped with air distribution plate three；The phase transformation of two level steam is equipped with spray equipment two, spray dress with coalescence room top
Two are set to connect with inlet valve two；The phase transformation of two level steam and coalescence ceiling portion are equipped with exhanst gas outlet two, the phase transformation of two level steam with it is solidifying
And room side wall is equipped with electrode plate, the phase transformation of two level steam is equipped with water discharging valve with coalescence room bottom；
The cross-sectional area of the air distribution plate one, air distribution plate two and air distribution plate three respectively with level-one steam phase change chamber cross-sectional area, double
Pole charging area entrance cross-sectional area, the phase transformation of two level steam are identical as coalescence chamber cross-section product.
2. a kind of device grown up based on steam phase transformation strengthening fine grained according to claim 1, it is characterised in that：It is described
Level-one steam phase change chamber, the phase transformation of two level steam and the shape of coalescence room are cylinder.
3. a kind of device grown up based on steam phase transformation strengthening fine grained according to claim 1, it is characterised in that：It is described
Level-one steam phase change chamber, the phase transformation of two level steam and floor outside coalescence room are all made of the not heat preservation heat insulating material with extraneous generation heat exchange
Material.
4. a kind of device grown up based on steam phase transformation strengthening fine grained according to claim 1, it is characterised in that：It is described
Mist droplet particle size ranging from 1-5um caused by spray equipment one, mist droplet particle size caused by the spray equipment two is ranging from
0.05-2um。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610959371.1A CN106362536B (en) | 2016-11-03 | 2016-11-03 | A kind of device grown up based on steam phase transformation strengthening fine grained |
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| CN201610959371.1A CN106362536B (en) | 2016-11-03 | 2016-11-03 | A kind of device grown up based on steam phase transformation strengthening fine grained |
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| CN106362536A CN106362536A (en) | 2017-02-01 |
| CN106362536B true CN106362536B (en) | 2018-08-28 |
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| JP2019118897A (en) * | 2018-01-10 | 2019-07-22 | エイチピー プリンティング コリア カンパニー リミテッド | Electrostatic precipitator |
| CN108561208A (en) * | 2018-04-28 | 2018-09-21 | 中国计量大学 | A kind of automobile exhaust gas purifying installation |
| CN109718607A (en) * | 2019-01-23 | 2019-05-07 | 南京西普水泥工程集团有限公司 | A kind of tail gas takes off white device |
| CN110624340A (en) * | 2019-09-18 | 2019-12-31 | 东南大学 | Dust removal pretreatment device and method based on water vapor charge phase change |
| CN116392917A (en) * | 2023-05-26 | 2023-07-07 | 河北师范大学 | Device for improving growth of fine particles based on condition of low energy consumption of vapor phase |
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| JPS6351959A (en) * | 1986-08-21 | 1988-03-05 | Ishikawajima Harima Heavy Ind Co Ltd | Air purifying method |
| JPH07178314A (en) * | 1993-12-24 | 1995-07-18 | Babcock Hitachi Kk | Wet desulfurizer and desulfurization method |
| CN103868087B (en) * | 2014-01-17 | 2016-06-08 | 东南大学 | A kind of collaborative enhancing PM2.5The method of elimination and fume afterheat deep exploitation and device |
| CN103768886B (en) * | 2014-01-24 | 2015-07-08 | 浙江大学 | Efficient multi-field-coordination fine particulate matter removal device and method |
| CN105817112B (en) * | 2016-04-20 | 2018-02-06 | 东南大学 | It is a kind of based on steam phase transformation coupling voltolisation and dedusting pretreatment unit and method |
| CN205667777U (en) * | 2016-05-05 | 2016-11-02 | 山东大学 | The dust-removing flue of strengthening fine particle surface vapor sorption growth process and system |
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