CN109876551A - GH type Eddy Distribution formula turbulent flow high-effective dust-removing demister - Google Patents
GH type Eddy Distribution formula turbulent flow high-effective dust-removing demister Download PDFInfo
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- CN109876551A CN109876551A CN201910302153.4A CN201910302153A CN109876551A CN 109876551 A CN109876551 A CN 109876551A CN 201910302153 A CN201910302153 A CN 201910302153A CN 109876551 A CN109876551 A CN 109876551A
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- 238000009826 distribution Methods 0.000 title claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims abstract description 60
- 239000012530 fluid Substances 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003546 flue gas Substances 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000005243 fluidization Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 230000000694 effects Effects 0.000 description 16
- 239000000428 dust Substances 0.000 description 13
- 238000012856 packing Methods 0.000 description 6
- 239000012716 precipitator Substances 0.000 description 5
- 230000003009 desulfurizing effect Effects 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001869 rapid Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
GH type micro swirl distribution turbulent flow high-effective dust-removing demister, include shell, turbulent flow dedusting demisting part and flushing section, the shell is cylindrical, and turbulent flow dedusting demisting part and flushing section are respectively positioned on the interior of shell, and flushing section is located at the top of turbulent flow dedusting demisting part；Flushing section includes Flushing nozzle, flushing pump, pipeline, valve, pressure gauge and electric control system.Flue gas stream passes through turbosphere from bottom to top in the present invention, the turbulence sphere of lightweight is fluidized, flushing liquor is uniformly sprayed from top to bottom, the turbulence sphere of fluidisation is in turbulence rotation and mutually collision, so that flushing liquor liquid film surface constantly carries out broken update, to strengthen mass transfer and the reaction of gas-liquid two-phase, reach higher dedusting demisting efficiency.The fluidisation of turbulence sphere and disturbance additionally aid and turbosphere are avoided fouling and blocking occur simultaneously.Dedusting demisting efficiency of the present invention is high, and widely applicable, meets no requirement (NR) to boiler, can run simultaneously with unit.
Description
Technical field
The present invention relates to environment protection field devices, and more specifically, in particular to a kind of GH type Eddy Distribution formula turbulent flow is efficient
Dedusting demister.
Background technique
For many years in the flue gas desulphurization system in the environment protection field in China, technique that 90% or more system uses is wet
Method desulfurizer.Due to wet desulphurization device technical principle, a large amount of 60 μm or less are contained in the flue gas after desulfurization
Water droplet, these water droplets not only lead to chimney band water, gypsum rain, while the soot emissions in flue gas can be made to be difficult to reach
Mark.In order to mitigate this phenomenon, chevron mist eliminator usually is installed on desulfurizing tower top, due to this kind of demister mainly according to
Rely the collision of water droplet and folded plate to remove water droplet, because small water droplet exists around flow phenomenon, in general, chevron mist eliminator
Not satisfactory to the removal effect of small water drops (20 μm or less), defogging effect is extremely difficult to 75mg/Nm3Below.It is rolling over
A not high major reason of demisting efficiency is in board-like demister: the water droplet in gas, which exists, streams effect；Stream effect and
Drop diameter, medium are related, and drop diameter is smaller, stream effect and are more obvious.Mitigate and stream effect, must just improve water droplet and
The relative velocity of capital impingement area.But in chevron mist eliminator, excessive flow velocity can be such that demister resistance increases, and can also make
Secondary raise of water droplet and impact effect.So the efficiency of dust collection of chevron mist eliminator is hardly higher than 75mg/Nm3.Furthermore these water
Drop and impure water droplet, wherein containing a large amount of more tiny dust, as a result, cause dust content in flue gas very high, so that
Dust emission in flue gas is exceeded, it is difficult to reach the requirement of minimum discharge.
In order to solve this problem, environmentally friendly producers many in recent years, R&D institution have carried out a large amount of research thus, also open
Have issued the products such as wet electrical dust precipitator, bundled tube dedusting demister；These products are that the flue gas of the coal-burning boiler in China is ultralow
Discharge plays the role of no small.But these products, due to itself, there is also many defects.Wet scrubber its
Dust removing effects are fine, fully achieve 5mg/Nm3Emission request, but its investment is big, and operating cost is high, occupied space greatly and
Maintenance and repair is at high cost.Although the investment of bundled tube dedusting demister, operating cost are greatly reduced, but dedusting defogging effect
It is unsatisfactory.
Summary of the invention
(1) technical problem
Therefore, how to solve the problems, such as that above-mentioned dedusting demister investment operating cost is high, dedusting defogging effect is bad, Cheng Liao
Those skilled in the art's urgent problem to be solved.
(2) technical solution
The contents of the present invention are to provide a kind of GH type micro swirl distribution turbulent flow high-effective dust-removing demister, comprising shell,
Turbulent flow dedusting demisting part and flushing section.
The shell is cylindrical, and the turbulent flow dedusting demisting part and flushing section are respectively positioned on the interior of shell, institute
It states flushing section and is located at the turbulent flow dedusting demisting upper.
The turbulent flow dedusting demisting part includes three layers of turbosphere, respectively the first turbosphere, the second turbosphere and
Three turbospheres.First turbosphere is located in the shell the bottom in portion, and second turbosphere is and the first turbosphere
Top, the third turbosphere are the top with the second turbosphere.
First turbosphere is made of the first support plate and the first turbulence sphere, and first support plate is bolted
In being evenly distributed with several circular holes on the outer casing inner wall, first support plate, it is rapid that the Circularhole diameter is less than described first
First 8~12mm of turbulent flow bulb diameter of fluid layer.Each circular hole is a region, and all circular holes form point of the first turbulence sphere
Cloth region, the Distributed Area are in honeycomb structure, each Distributed Area side wall includes 6 faces, each distribution
Formula zone cross-sectional is regular hexagon.First turbulence sphere is hollow sphere.The presentation specific gravity of the hollow sphere is according to flue gas stream
Speed, water droplet content and efficiency carry out different designs.
Second turbosphere is made of the second support plate and the second turbulence sphere, and the second support crab bolt is fixed on institute
Outer casing inner wall is stated, several circular holes are evenly distributed in second support plate, the Circularhole diameter is less than second turbulence sphere
8~12mm of diameter.Each circular hole is a region, the Distributed Area of the first turbulence sphere of all circular holes compositions, described point
Cloth region is in honeycomb structure, each Distributed Area side wall includes 6 faces, each Distributed Area cross section is positive
Hexagon.Second turbulence sphere is hollow sphere.The second turbulent flow bulb diameter is greater than first 5~10mm of turbulent flow bulb diameter.
The third turbosphere is made of third support plate and third turbulence sphere, and the third support crab bolt is fixed on institute
Outer casing inner wall is stated, several circular holes are evenly distributed in the third support plate, the Circularhole diameter is less than the third turbulence sphere
8~12mm of diameter.The third turbulence sphere is hollow sphere, and the third turbulence sphere spherome surface is provided with several apertures, can
It further increases and streams effect.
The shape of turbulence sphere and diameter are different in first turbosphere, the second turbosphere and third turbosphere.
The flushing section includes Flushing nozzle, flushing pump, pipeline, valve, pressure gauge and electric control system.Institute
It states Flushing nozzle and is provided with several, particular number is determined according to the size of the cross-sectional outer.The flushing pump passes through pipe
Road is connected to the Flushing nozzle, and the flushing pump is connected with pressure gauge, for monitoring the fluid pressure in flushing pump, into one
Step judges whether the flushing liquor in flushing pump is enough.It is provided with valve in the pipeline, controls the switch of Flushing nozzle.It is described
Electric control system uses PLC controller, and model uses Siemens 200.The main function of flushing section is that periodic flushing falls respectively
Slurry, the solid sediment of turbosphere trapping keep each turbosphere cleaning, moisten, prevent each turbosphere fouling and obstruction runner.
The present invention devises three layers of turbulence sphere and a flushing layer, and the form and diameter of every layer of turbulence sphere are different, and
One turbulent flow bulb diameter is smaller, and third turbulence sphere is relatively large in diameter, and this design can obtain good turbulence effects under various flow velocitys.
Turbulence sphere is hollow sphere, and diameter, specific surface area, porosity, packing coefficient, the heaping weight of hollow sphere are had nothing in common with each other, and needs basis
Flue gas flow rate, water droplet content and efficiency carry out different designs；Third turbulence sphere is on the basis of hollow sphere, also in spherome surface
Aperture is several, can further improve and streams effect.In order to allow turbulence sphere to obtain good, uniform point in the same level
Cloth, every layer devises several Distributed Area, and turbulence sphere homogeneous perturbation in each area can improve efficiency but also balanced
Resistance.It rinses layer to be made of several Flushing nozzles, be rinsed by PLC controller by process control, the water for allowing capture to agglomerate to
It drops back in desulfurizing tower.
The working principle of the invention is: making mobile phase to the raw turbulent flow of stable flue gas miscarriage using turbulence sphere, improves water droplet
With the relative velocity of impingement area, that destroys small water droplet streams effect, so that the capturing efficiency of small water droplet be made obviously to be mentioned
It is high.Flue gas stream passes through turbosphere from bottom to top, and the turbulence sphere of lightweight is fluidized, and flushing liquor is uniformly sprayed from top to bottom,
The turbulence sphere of fluidisation is in turbulence rotation and mutually collision, so that flushing liquor liquid film surface constantly carries out broken update, thus
Mass transfer and the reaction for strengthening gas-liquid two-phase, reach higher dedusting demisting efficiency.The fluidisation of turbulence sphere and disturbance also help simultaneously
In avoiding turbosphere from fouling and blocking occur.
(3) beneficial effect
The beneficial effects of the present invention are: setting of the present invention by three layers of turbosphere and one layer of flushing layer, flue gas stream is certainly
It is lower and upper by turbosphere, the turbulence sphere of lightweight is fluidized, flushing liquor is uniformly sprayed from top to bottom, and the turbulence sphere of fluidisation exists
In turbulence rotation and mutually collision, so that flushing liquor liquid film surface constantly carries out broken update, to strengthen gas-liquid two-phase
Mass transfer and reaction reach higher dedusting demisting efficiency, and widely applicable, meet no requirement (NR) to boiler, can fortune synchronous with unit
Row.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
In figure: 1 is shell, and 2 be the first turbosphere, and 2-1 is the first support plate, and 2-2 is the first turbulence sphere；3 be the second rapids
Fluid layer, 3-1 are the second support plates, and 3-2 is the second turbulence sphere；4 be third turbosphere, and 4-1 is third support plate, and 4-2 is third
Turbulence sphere；5 be flushing section, and 5-1 is Flushing nozzle, and 5-2 is flushing pump, and 5-3 is pipeline, and 5-4 is electric control system.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
In the description of the present invention, the orientation of instructions such as term " on ", "lower", "front", "rear", " top ", " bottom " or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.
Specific embodiment: as shown in Figure 1, a kind of GH type micro swirl distribution turbulent flow high-effective dust-removing demister, comprising outer
Shell 1, turbulent flow dedusting demisting part and flushing section 5.
The shell 1 is cylindrical, and the turbulent flow dedusting demisting part and flushing section are respectively positioned on the interior of shell, institute
State the top that flushing section is located at the turbulent flow dedusting demisting part.
The turbulent flow dedusting demisting part includes three layers of turbosphere, respectively the first turbosphere 2,3 and of the second turbosphere
Third turbosphere 4.First turbosphere is located in the shell the bottom in portion, and second turbosphere is and the first turbosphere
Top, the third turbosphere is top with the second turbosphere.
First turbosphere 2 is made of the first support plate 2-1 and the first turbulence sphere 2-2, and first support plate passes through
Bolt is fixed on the outer casing inner wall, and several circular holes are evenly distributed in first support plate, and the Circularhole diameter is less than institute
State first 8~12mm of turbulent flow bulb diameter of the first turbosphere.Each circular hole is a region, and all circular holes constitute first
The Distributed Area of turbulence sphere, the Distributed Area are in honeycomb structure, each Distributed Area side wall includes 6 faces,
Each Distributed Area cross section is regular hexagon.First turbulence sphere is hollow sphere, and hollow bulb diameter uses 25mm, than
Surface area 500m2/m3, porosity 0.81m3/m3, packing coefficient is 85000/m3。
Second turbosphere 3 is also made of the second support plate 3-1 and the second turbulence sphere 3-2, the second support plate spiral shell
Bolt is fixed on the outer casing inner wall, and several circular holes are evenly distributed in second support plate, and the Circularhole diameter is less than described
Second 8~12mm of turbulent flow bulb diameter.Each circular hole is a region, and all circular holes constitute the distribution of the first turbulence sphere
Region, the Distributed Area are in honeycomb structure, each Distributed Area side wall includes 6 faces, each distributed area
Domain cross section is regular hexagon.Second turbulence sphere is hollow sphere.The second turbulent flow bulb diameter is 38mm, specific surface area
300m2/m3, porosity 0.86m3/m3, packing coefficient is 22800/m3。
The third turbosphere 4 is made of third support plate 4-1 and third turbulence sphere 4-2, and the third supports crab bolt
It is fixed on the outer casing inner wall, is evenly distributed with several circular holes in the third support plate, the Circularhole diameter is less than described the
Three 8~12mm of turbulent flow bulb diameter.The third turbulent flow bulb diameter is 50mm, specific surface area 200m2/m3, porosity 0.90m3/
m3, packing coefficient is 11500/m3, it is also several in spherome surface aperture furthermore on the basis of hollow sphere, it can further improve
It goes to stream effect.
The flushing section 5 includes Flushing nozzle 5-1, flushing pump 5-2, pipeline 5-3, valve, pressure gauge and electrical
Control section 5-4.The Flushing nozzle is provided with several, and 16 are provided in the present embodiment.The flushing pump passes through pipe
Road is connected to the Flushing nozzle, and the flushing pump is connected with pressure gauge, for monitoring the fluid pressure in flushing pump, into one
Step judges whether the flushing liquor in flushing pump is enough.It is provided with valve in the pipeline, controls the switch of Flushing nozzle.It is described
Electric control system uses PLC controller, and model uses Siemens 200.The main function of flushing section is that periodic flushing falls respectively
Slurry, the solid sediment of turbosphere trapping keep each turbosphere cleaning, moisten, prevent each turbosphere fouling and obstruction runner.
Embodiment one: specifically including diameter, the specific surface of turbulence sphere for the parameter for the turbulence sphere that each turbosphere uses
Product, porosity, packing coefficient are designed according to flue gas flow rate, water droplet content and dedusting demisting efficiency, and then determine each turbulent flow
The parameter for the turbulence sphere that layer uses.
It is respectively 3.0,3.5,4.0,4.5m/h in flue gas flow rate, water droplet content is 50mg/Nm3、75mg/Nm3、100mg/
Nm3In the case where, demisting is dusted using different turbulence sphere parameters, finally determines the parameter of optimal turbulence sphere: i.e.
Select turbulence sphere parameter for diameter 25mm, specific surface area 500m2/m3, porosity 81m3/m3, 15000/m of packing coefficient3, cigarette
When gas velocity is 3.0,3.5,4.0m/s, higher efficiency of dust collection and demisting efficiency are obtained, using removing for different turbulence sphere parameters
See Table 1 for details for dirt demisting efficiency table.
Table 1 uses the dedusting demisting efficiency table of different turbulence sphere parameters
Embodiment two: for the boiler of 35t/h, 75t/h, 130t/h, respectively in different original fume amounts, original water droplet
In the case of amount, its corresponding smoke discharge amount and water droplet discharge amount are obtained, and to using boiler and wet-esp of the invention
Device, the cost for restraining deduster, investment, operation total cost compare, and obtain using boiler cost of the invention, investment, fortune
Row total cost is lower than wet electrical dust precipitator, tube bank deduster, and see Table 2 for details and table 3.
The different boiler emission amount comparison sheets of table 2
3 cost of table, investment, operation total cost comparison sheet
In another embodiment of the invention, it is respectively provided with one layer of flushing section above every layer of turbosphere, it so can be with
Increase the cleaning effect rinsed, so that the dedusting demisting efficiency of final flue gas is more preferably.
The present invention is obtained by the dedusting demisting efficiency of multiple groups embodiment:
1. lower by 40% than bundled tube dedusting demister in cost and investing lower than wet electrical dust precipitator 80%；
2. lower by 20% than bundled tube dedusting demisting lower than wet electrical dust precipitator 70% in terms of operating cost；
3. slightly higher than bundled tube dedusting demister than U.S. wet electrical dust precipitator in terms of efficiency；
4. in terms of maintenance and repair: present apparatus maintenance and repair amount very little, it can longtime running；
5. the present apparatus using wide, meet no requirement (NR) to this boiler, can run simultaneously with unit.
Through the foregoing embodiment, the accessible performance indicator of the present invention are as follows:
1., efficiency of dust collection: desulfurizing tower import dust content be less than 30mg/Nm3When, desulfurizing tower outlet drain concentration is less than
5mg/Nm3。
2., demisting efficiency: demister import water droplet content be less than 75mg/Nm3When, it is dense that demister exports water droplet discharge
Degree is less than 30mg/Nm3。
The present invention is not limited to the above-described embodiments, anyone can obtain other various shapes under the inspiration of the present invention
The product of formula.It is all according to equivalent changes and modifications within the scope of the patent application of the present invention, all should belong to covering scope of the invention.
Claims (5)
1.GH type micro swirl distribution turbulent flow high-effective dust-removing demister includes shell, turbulent flow dedusting demisting part and rinse part
Point, it is characterised in that:
The turbulent flow dedusting demisting part and flushing section are respectively positioned on the interior of shell, and the flushing section is located at the turbulent flow
Dedusting demisting upper；
The turbulent flow dedusting demisting part includes three layers of turbosphere, and respectively the first turbosphere, the second turbosphere and third are rapid
Fluid layer, first turbosphere are located in the shell the bottom in portion, and second turbosphere is the top with the first turbosphere,
The third turbosphere is the top with the second turbosphere；
The flushing section includes Flushing nozzle, flushing pump, pipeline, valve, pressure gauge and electric control system.
2. a kind of GH type micro swirl distribution turbulent flow high-effective dust-removing demister according to claim 1, it is characterised in that:
First turbosphere is made of the first support plate and the first turbulence sphere, and first support plate is fixed by bolts in institute
Outer casing inner wall is stated, several circular holes are evenly distributed in first support plate, the Circularhole diameter is less than first turbosphere
First 8~12mm of turbulent flow bulb diameter；Each circular hole is a region, and all circular holes form the distribution of the first turbulence sphere
Region, the Distributed Area are in honeycomb structure, each Distributed Area side wall includes 6 faces, each distributed area
Domain cross section is regular hexagon；
First turbulence sphere is hollow sphere.
3. GH type micro swirl distribution turbulent flow high-effective dust-removing demister according to claim 1, it is characterised in that:
Second turbosphere is made of the second support plate and the second turbulence sphere, and the second support crab bolt is fixed on described outer
Shell inner wall, several circular holes are evenly distributed in second support plate, and the Circularhole diameter is less than the second turbulent flow bulb diameter 8
~12mm；Each circular hole is a region, and all circular holes form the Distributed Area of the first turbulence sphere, the distribution area
Domain is in honeycomb structure, each Distributed Area side wall includes 6 faces, each Distributed Area cross section is positive six sides
Shape；
Second turbulence sphere is hollow sphere, and the second turbulent flow bulb diameter is greater than first 5~10mm of turbulent flow bulb diameter.
4. GH type micro swirl distribution turbulent flow high-effective dust-removing demister according to claim 1, it is characterised in that:
The third turbosphere is made of third support plate and third turbulence sphere, and the third support crab bolt is fixed on described outer
Shell inner wall, several circular holes are evenly distributed in the third support plate, and the Circularhole diameter is less than the third turbulent flow bulb diameter 8
~12mm；The third turbulence sphere is hollow sphere, and the spherome surface of the third turbulence sphere is provided with several apertures.
5. GH type micro swirl distribution turbulent flow high-effective dust-removing demister according to claim 1, it is characterised in that:
The Flushing nozzle is provided with several, and quantity is determined according to the size of the cross-sectional outer；
For the flushing pump by piping connection in the Flushing nozzle, the flushing pump is connected with pressure gauge；In the pipeline
In be provided with valve；
The electric control system uses PLC controller, and model uses Siemens 200.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302153.4A CN109876551A (en) | 2019-04-16 | 2019-04-16 | GH type Eddy Distribution formula turbulent flow high-effective dust-removing demister |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302153.4A CN109876551A (en) | 2019-04-16 | 2019-04-16 | GH type Eddy Distribution formula turbulent flow high-effective dust-removing demister |
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| CN109876551A true CN109876551A (en) | 2019-06-14 |
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| CN201910302153.4A Pending CN109876551A (en) | 2019-04-16 | 2019-04-16 | GH type Eddy Distribution formula turbulent flow high-effective dust-removing demister |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110665361A (en) * | 2019-10-30 | 2020-01-10 | 哈尔滨蔚蓝环保设备制造有限公司 | Ultra-low emission equipment of dust removal desulfurization integration |
| CN111036048A (en) * | 2019-12-24 | 2020-04-21 | 上海海事大学 | Novel ship exhaust gas washing desulfurization device |
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