CN106914088A - Based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques - Google Patents
Based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques Download PDFInfo
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- CN106914088A CN106914088A CN201710057132.1A CN201710057132A CN106914088A CN 106914088 A CN106914088 A CN 106914088A CN 201710057132 A CN201710057132 A CN 201710057132A CN 106914088 A CN106914088 A CN 106914088A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002245 particle Substances 0.000 claims abstract description 99
- 238000005054 agglomeration Methods 0.000 claims abstract description 57
- 230000002776 aggregation Effects 0.000 claims abstract description 57
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 22
- 230000023556 desulfurization Effects 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 42
- 239000003546 flue gas Substances 0.000 claims description 42
- 238000002156 mixing Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000012071 phase Substances 0.000 claims description 7
- 229910052602 gypsum Inorganic materials 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000009297 electrocoagulation Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to be based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques, including multiple dimensioned particle agglomeration device, many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, comprise the following steps successively：Cooling, the absorption of sulfuric acid droplet, charged fine grained, particle agglomeration, first time removing treatment, desulfurization process, second removing treatment；Advantages of the present invention：By cooling, sulfuric acid droplet is adsorbed, fine grained is charged, particle agglomeration, first time removing is processed, desulfurization process, the removal technique of second removing treatment carries out removing treatment to PM2.5, sulfuric acid droplet can be adsorbed to form fine grained, then fine grained is passed through into the charged treatment of charge device, multiple dimensioned particle agglomeration device treatment, reach optimal particle agglomeration efficiency, and it is applied widely, multiple dimensioned particle agglomeration device, many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, adsorption conditionses can be synthesized according to different demands, can flexibly be arranged in pairs or groups according to field condition.
Description
Technical field
The present invention relates to be based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques.
Background technology
Dedusting technology is widely used in thermal power generation and other fields, and efficiency of dust collection directly affects dedusting quality.Face
The deterioration of environment, the dust removing effects of dust arrester are increasingly taken seriously, especially the clearance of PM2.5, existing de- to PM2.5
Except treatment is removed by electrocoagulation, there is that technology is single, narrow application range, effect is undesirable, using few shortcoming.
The content of the invention
The technical problem to be solved in the present invention is just to provide based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removals
Technique, solves the problems, such as that existing PM2.5 removal effects are poor.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：Based on multiple dimensioned, many associations
Same, multiphase coupled PM2.5 removal techniques, including multiple dimensioned particle agglomeration device, many occasion particle agglomeration devices and multiphase coupling
Close particle agglomeration device；
Multiple dimensioned particle agglomeration device includes large-scale devices and small scale devices, and large-scale devices can be produced and promote particle
Dm grade and/or m grades of turbulent flow of group's effectively blending, small scale devices can produce cm grades and/or mm grades of turbulent eddy to promote to blend
Intrinsic parcel air film is further broken through between particle afterwards, directly contact is reached；
Many occasion particle agglomeration devices include light field, electric field, acoustic wavefield, phase variable field, the combination of two in temperature field or
The combination of at least two；
Multiphase coupled particle agglomeration device includes the combination or the combination of at least two of two in gas phase, liquid phase, solid phase；
Comprise the following steps successively：
Step one：Cooling：Flue-gas temperature reduction is made the SO in flue gas by heat sink3It is condensed into sulfuric acid mist and absorbs
Vapor forms sulfuric acid droplet, and the temperature of flue gas is less than to SO3Dew-point temperature；
Step 2：Sulfuric acid droplet is adsorbed：Flue gas after step one is lowered the temperature acts on lower formation by heat exchange coil and fin
Field of turbulent flow, while being processed under many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, makes sulfuric acid droplet by solid
Fly ash granule is adsorbed, and forms fine grained；
Step 3：Fine grained is charged：The flue gas that step 2 is handled well is processed by charge device, by charge device
The positive and negative electrode of opposed polarity carries out charged treatment to fine grained, and it forms positive polarity particle and negative polarity particle to make particle；
Step 4：Particle agglomeration；The flue gas that step 3 is handled well is processed by multiple dimensioned particle agglomeration device, makes positive pole
Property particle and negative polarity particle blended successively, flow-disturbing treatment；
Step 5：First time removing is processed；Flue gas after step 4 is processed is processed by the removing of dry electric precipitation device；
Step 6：Desulfurization process；Entering in wet desulphurization device in flue gas after step 5 is processed carries out desulfurization process,
The fine grained that step 5 is not removed is set to be processed through spraying gypsum droplet；
Step 7：Second removing is processed；Flue gas after step 6 desulfurization is processed into high efficiency demister removing.
Preferably, the heat sink in step one is arranged in main chimney flue, many in the charge device, step 4 in step 3
Size granule agglomeration device is sequentially arranged in point flue or electric precipitation import end socket, can be by the flue gas after collection in the very first time
Cooling, raising condensation efficiency are inside reached, and the damage of heat sink, long service life can be reduced.
Preferably, multiple dimensioned particle agglomeration device includes body and the vertical clapboard being arranged in body, and vertical clapboard will
Body is separated into the first cavity and the second cavity, and vertical clapboard is provided with material-dropping hole, and blending positive polarity is provided with the first cavity
First votex sheet of grain and negative polarity particle, is provided with the second votex sheet of flow-disturbing positive polarity particle and negative polarity particle in the second cavity,
The diameter with diameter greater than the second votex sheet of the first votex sheet, can reduce the installing space of multiple dimensioned particle agglomeration device, improve particle
The efficiency of reunion, improves installation effectiveness, and using effect is good.
In sum, advantages of the present invention：1. by cooling, the absorption of sulfuric acid droplet, charged fine grained, particle agglomeration, the
Once removing treatment, desulfurization process, the removal technique of second removing treatment carry out removing treatment to PM2.5, can be by sulfuric acid mist
Drop absorption forms fine grained, and then fine grained is reached by the charged treatment of charge device, the treatment of multiple dimensioned particle agglomeration device
Optimal particle agglomeration efficiency, and it is applied widely；
2. multiple dimensioned particle agglomeration device, many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, can basis
Different demands synthesize to adsorption conditionses, and Practical Performance is good, can flexibly be arranged in pairs or groups according to field condition；
3. fine grained is formed positive polarity particle and negative polarity particle by charge device in step 3, make fine grained surface
With by strong adsorptivity, be conducive to blending, the flow-disturbing treatment of positive polarity particle and negative polarity particle in subsequent step.
Specific embodiment
Embodiment one：
It is based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques including multiple dimensioned particle agglomeration device, many
Occasion particle agglomeration device and multiphase coupled particle agglomeration device；
Multiple dimensioned particle agglomeration device includes large-scale devices and small scale devices, and large-scale devices can be produced and promote particle
Dm grade and/or m grades of turbulent flow of group's effectively blending, small scale devices can produce cm grades and/or mm grades of turbulent eddy to promote to blend
Intrinsic parcel air film is further broken through between particle afterwards, directly contact is reached；
Many occasion particle agglomeration devices include light field, electric field, acoustic wavefield, phase variable field, the combination of two in temperature field or
The combination of at least two；
Multiphase coupled particle agglomeration device includes the combination or the combination of at least two of two in gas phase, liquid phase, solid phase；
Comprise the following steps successively：
Step one：Cooling：Flue-gas temperature reduction is made the SO in flue gas by heat sink3It is condensed into sulfuric acid mist and absorbs
Vapor forms sulfuric acid droplet, and the temperature of flue gas is less than to SO3Dew-point temperature；
Step 2：Sulfuric acid droplet is adsorbed：Flue gas after step one is lowered the temperature acts on lower formation by heat exchange coil and fin
Field of turbulent flow, while being processed under many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, makes sulfuric acid droplet by solid
Fly ash granule is adsorbed, and forms fine grained；
Step 3：Fine grained is charged：The flue gas that step 2 is handled well is processed by charge device, by charge device
The positive and negative electrode of opposed polarity carries out charged treatment to fine grained, and it forms positive polarity particle and negative polarity particle to make particle；
Step 4：Particle agglomeration；The flue gas that step 3 is handled well is processed by multiple dimensioned particle agglomeration device, makes positive pole
Property particle and negative polarity particle blended, flow-disturbing treatment；
Step 5：First time removing is processed；Flue gas after step 4 is processed is processed by the removing of dry electric precipitation device；
Step 6：Desulfurization process；Entering in wet desulphurization device in flue gas after step 5 is processed carries out desulfurization process,
The fine grained that step 5 is not removed is set to be processed through spraying gypsum droplet；
Step 7：Second removing is processed；Flue gas after step 6 desulfurization is processed into high efficiency demister removing.
Heat sink in step one is arranged in main chimney flue, multiple dimensioned in the charge device, step 4 in step 3
Grain agglomeration device is sequentially arranged in point flue or electric precipitation import end socket, the flue gas after collection can be reached within the very first time
Cooling, can reach cooling by the flue gas after collection within the very first time, improve condensation efficiency, and can reduce the damage of heat sink
It is bad, the phase variable field in long service life, and step 2, temperature field, gas, liquid, solid coupling also can be by light field, electric field, sound
Wave field is processed, and can realize different occasions, integrated, the raising Practical Performance, multiple dimensioned particle agglomeration device bag of different demands
Include body and the vertical clapboard being arranged in body, body is separated into the first cavity and the second cavity by vertical clapboard, vertically every
Plate is provided with material-dropping hole, the first votex sheet of blending positive polarity particle and negative polarity particle is provided with the first cavity, in the second cavity
It is provided with the second votex sheet of flow-disturbing positive polarity particle and negative polarity particle, the diameter with diameter greater than the second votex sheet of the first votex sheet, energy
The installing space of multiple dimensioned particle agglomeration device is reduced, the efficiency of particle agglomeration is improved, installation effectiveness is improved, using effect is good.
Embodiment two：
As described in embodiment one based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques, the present embodiment
With following difference：Comprise the following steps successively：
Step one：Humidification spray：By spraying into desulfurization wastewater in flue, flue-gas temperature is on the one hand reduced, on the other hand made
Obtain particle moisture absorption, increase viscosity；
Step 2：Multiple dimensioned particle agglomeration device blending：By multiple dimensioned particle agglomeration device process, make moisture absorption particle according to
It is secondary blended by multiple dimensioned particle agglomeration device, flow-disturbing treatment；
Step 3：Fine grained is charged：The flue gas that step 2 is handled well is processed by charge device, by charge device
The positive and negative electrode of opposed polarity carries out charged treatment to fine grained, and it forms positive polarity particle and negative polarity particle to make particle；
Step 4：First time removing is processed；Flue gas after step 3 is processed is processed by the removing of dry electric precipitation device；
Step 5：Desulfurization process；Entering in wet desulphurization device in flue gas after step 4 is processed carries out desulfurization process,
The fine grained that step 5 is not removed is set to be processed through spraying gypsum droplet；
Step 6：Second removing is processed；Flue gas after step 5 desulfurization is processed into high efficiency demister removing.
Embodiment three：
As described in embodiment one, two based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques, this implementation
Example has following difference：Comprise the following steps successively：
Step one：Gaseous state SO3Spray：By spraying into gaseous state SO in flue3, improve flue gas and dust characteristic, there is SO3It is cold
Solidifying adsorption phenomena；
Step 2：Sound wave drives blending reinforcing particle to reunite：By sound field reflecting, blend particle strengthening and reunite；
Step 3：First time removing is processed；Flue gas after step 2 is processed is processed by the removing of dry electric precipitation device；
Step 4：Desulfurization process；Entering in wet desulphurization device in flue gas after step 3 is processed carries out desulfurization process,
The fine grained that step 5 is not removed is set to be processed through spraying gypsum droplet；
Step 5：Second removing is processed；Flue gas after step 4 desulfurization is processed into high efficiency demister removing.
Example IV：
As described in embodiment one, two, three based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques, this
Embodiment has following difference：Comprise the following steps successively：
Step one：Magnetic kind is sprayed：It is that follow-up magnetic fields are prepared by spraying into magnetic kind in flue；
Step 2：Turbulent flow drives blending and magnetic fields reinforcing particle to reunite：Blending and magnetic fields are driven by turbulent flow,
Particle strengthening is blended to reunite；
Step 3：First time removing is processed；Flue gas after step 2 is processed is processed by the removing of dry electric precipitation device；
Step 4：Desulfurization process；Entering in wet desulphurization device in flue gas after step 3 is processed carries out desulfurization process,
The fine grained that step 5 is not removed is set to be processed through spraying gypsum droplet；
Step 5：Second removing is processed；Flue gas after step 4 desulfurization is processed into high efficiency demister removing.
In addition to above preferred embodiment, the present invention also has other implementation methods, and those skilled in the art can be according to this
Invention is variously modified and deforms, and without departing from spirit of the invention, all should belong to appended claims of the present invention and determine
The scope of justice.
Claims (3)
1. multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques are based on, it is characterised in that：Including multiple dimensioned cluster of grains
Poly- device, many occasion particle agglomeration devices and multiphase coupled particle agglomeration device；
Multiple dimensioned particle agglomeration device includes large-scale devices and small scale devices, and large-scale devices can be produced and promote the particle swarm to have
Dm grade and/or m grades of turbulent flow of blending are imitated, small scale devices can produce cm grades and/or mm grades of turbulent eddy come after promoting to blend
Intrinsic parcel air film is further broken through between particle, directly contact is reached；
Many occasion particle agglomeration devices include light field, electric field, acoustic wavefield, phase variable field, the combination of two in temperature field or at least
The combination of two；
Multiphase coupled particle agglomeration device includes the combination or the combination of at least two of two in gas phase, liquid phase, solid phase；
Comprise the following steps successively：
Step one：Cooling：Flue-gas temperature reduction is made the SO in flue gas by heat sink3It is condensed into sulfuric acid mist and absorbs water steaming
Gas forms sulfuric acid droplet, and the temperature of flue gas is less than to SO3Dew-point temperature；
Step 2：Sulfuric acid droplet is adsorbed：Flue gas after step one is lowered the temperature forms turbulent flow under being acted on by heat exchange coil and fin
, while being processed under many occasion particle agglomeration devices and multiphase coupled particle agglomeration device, make sulfuric acid droplet by solid flying dust
Granular absorption, forms fine grained；
Step 3：Fine grained is charged：The flue gas that step 2 is handled well is processed by charge device, by different in charge device
The positive and negative electrode of polarity carries out charged treatment to fine grained, and it forms positive polarity particle and negative polarity particle to make particle；
Step 4：Particle agglomeration；The flue gas that step 3 is handled well is processed by multiple dimensioned particle agglomeration device, makes positive polarity
Grain and negative polarity particle are blended successively, flow-disturbing treatment；
Step 5：First time removing is processed；Flue gas after step 4 is processed is processed by the removing of dry electric precipitation device；
Step 6：Desulfurization process；Entering in wet desulphurization device in flue gas after step 5 is processed carries out desulfurization process, makes step
Rapid five fine graineds not being removed are processed through spraying gypsum droplet；
Step 7：Second removing is processed；Flue gas after step 6 desulfurization is processed into high efficiency demister removing.
2. PM2.5 removal techniques based on multiple dimensioned, many field coordinations, multiphase coupled according to claim 1, its feature exists
In：Heat sink in step one is arranged in main chimney flue, multiple dimensioned particle agglomeration in the charge device, step 4 in step 3
Device is sequentially arranged in point flue or electric precipitation import end socket.
3. PM2.5 removal techniques based on multiple dimensioned, many field coordinations, multiphase coupled according to claim 2, its feature exists
In：Multiple dimensioned particle agglomeration device includes body and the vertical clapboard that is arranged in body, and body is separated into the by vertical clapboard
One cavity and the second cavity, vertical clapboard are provided with material-dropping hole, and blending positive polarity particle and negative polarity are provided with the first cavity
First votex sheet of grain, is provided with the second votex sheet of flow-disturbing positive polarity particle and negative polarity particle in the second cavity, the first votex sheet it is straight
Diameter of the footpath more than the second votex sheet.
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| CN201710057132.1A CN106914088A (en) | 2017-01-23 | 2017-01-23 | Based on multiple dimensioned, many field coordinations, multiphase coupled PM2.5 removal techniques |
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| CN108434950A (en) * | 2018-03-15 | 2018-08-24 | 东南大学 | A kind of devices and methods therefor of the evaporation of coordinated desulfurization waste water flue and enhancing fine particle and sulfur trioxide removing |
| CN112354311A (en) * | 2020-10-27 | 2021-02-12 | 宁波诺丁汉大学 | Device and method for absorbing and filtering PM2.5 by coupling Taylor vortex and chemical agglomeration |
| CN113750724A (en) * | 2021-09-29 | 2021-12-07 | 中国石油化工股份有限公司 | Device and method for removing particulate matters in flue gas |
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Application publication date: 20170704 |