CN106621680A - Method and system for deeply removing dust from flue gas after wet desulfurization - Google Patents
Method and system for deeply removing dust from flue gas after wet desulfurization Download PDFInfo
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- CN106621680A CN106621680A CN201611031654.6A CN201611031654A CN106621680A CN 106621680 A CN106621680 A CN 106621680A CN 201611031654 A CN201611031654 A CN 201611031654A CN 106621680 A CN106621680 A CN 106621680A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/32—Transportable units, e.g. for cleaning room air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a method and system for deeply removing dust from flue gas after wet desulfurization. The method comprises the following steps: performing coagulation on PM2.5 fine particles in flue gas after desulfurization to magnify the particles by steam, and then performing wet electrostatic precipitation. The system for deeply removing dust from flue gas disclosed by the invention comprises a phase change condensing chamber, a condensing defogger and an electrostatic precipitator, wherein the phase change condensing chamber is abutted against the flue gas desulfurization system; a plurality of steam nozzles are arranged in the phase change condensing chamber; the steam nozzles are connected with the steam system through a steam distribution pipe; the electrostatic precipitator is abutted against the outlet of the phase change condensing chamber; and the condensing defogger is arranged on a passage between the phase change condensing chamber and the electrostatic precipitator. The method and system for deeply removing dust from flue gas after wet desulfurization disclosed by the invention effectively solve the problem that the particle sizes of inlet particulate matters of a wet electrostatic precipitator is small, so that the charging is difficult, the dust removal efficiency is improved and deep dust removal is realized.
Description
Technical field
The present invention relates to the flue gas depth dust collection method and system after a kind of wet desulphurization, belongs to desulfurization fume deep purifying
Technical field.
Background technology
In recent years, China's city haze weather is increasingly severe, and to public health and life serious impact is caused,
PM2.5 level fine particle too high levels are the main causes for causing haze weather.PM2.5 energy long-term suspensions have in air
There is very big specific surface area, it is easy to noxious material and the Trace poisonous elements such as polycyclic aromatic hydrocarbons (PAH), virus and bacterium are enriched with, to people
Body health and Atomspheric Environmental are very big.
At present, the thermal power plant for carrying out thermal power generation using fire coal is the primary discharge source of China's dust, although this kind of thermoelectricity
Factory is furnished with the dust arresters such as electrostatic, cloth bag and wet process of FGD (WFGD) system mostly, can effectively remove meal dirt and
SO in flue gas2, but be difficult to effectively trap the subparticles such as PM2.5.
In current various dedusting new technologies, wet-esp is control dust pollution, realizes the effective of qualified discharge
Technology, but, due to the fine particle particle diameter such as PM2.5 it is too small, it is difficult to it is charged, cause fine particle be difficult to enrichment to anode
Plate region reduces the efficiency of dust collection of wet electrical dust precipitator, the dedusting effect of current wet electrical dust precipitator so as to realize high-effective dust-removing
Rate only has 60-80%, with very big room for promotion.
The content of the invention
Present invention solves the technical problem that being：For the relatively low problem of existing wet-method desulfurized fume efficiency of dust collection, this
Invention provides flue gas depth dust collection method and system after a kind of new wet desulphurization.
The present invention adopts the following technical scheme that realization：
A kind of flue gas depth dust collection method after wet desulphurization, comprises the steps：
(1) the fine grain coalescences of PM2.5 become big, and to the nearly saturation after wet desulphurization or saturated flue gas steam is sprayed into, and build
Vertical aqueous vapor the coring of PM2.5 fine particles surface condense required for supersaturated environments, so as to promote coal-fired flue-gas in thin
It is big that grain thing mutually condenses change；
(2) demisting is condensed, condensation demisting is carried out to flue gas, further increase fine particle surface core by condensing phase transformation
Change the degree of supersaturation for condensing, the minuteness particle coalescence for continuing to occur with PM2.5 fine particles as the nuclei of condensation becomes big, and removes flue gas
In partial drop, make smoke distribution evenly；
(3) removing of particulate matter after condensing：To carry out being discharged after electric precipitation containing the flue gas for condensing particulate matter after increase, protect
Dust discharge amount in card flue gas is less than 5mg/m3。
Further, using power plant's exhaust steam or indirect steam, vapo(u)rous degree is the steam in (1st) step
1.10-1.50。
Further, the condensation demisting in (2nd) step adopts sulfur removal technology water, and technique coolant-temperature gage is 10-40 DEG C.
Further, dedusting is carried out using wet electrical dust precipitator in (3rd) step.
The invention also discloses the flue gas depth dust pelletizing system after a kind of wet desulphurization, including phase transformation coalescence room, condensation are removed
Day with fog and electric cleaner；
The phase transformation coalescence room is docked with flue gas desulphurization system, and some steam jets are provided with phase transformation coalescence room, described
Steam jet is connected by steam gas distribution pipe with vapour system；
The electric cleaner is docked with the outlet of phase transformation coalescence room, and the condensation demister is arranged on phase transformation coalescence room and electricity
On passage between deduster.
Further, the phase transformation coalescence room is arranged on the top of desulfuration absorbing tower, the condensation demister and electric precipitation
Device is successively set on the top of phase transformation coalescence room, and the anode board component of the electric cleaner and cathode line are vertically arranged in parallel,
Monoblock type dedusting tower body is formed, the dedusting tower body top arranges chimney breast.
Further, the phase transformation coalescence chamber interior walls are arranged and had in the low-surface-energy for promoting phase transformation effect and anti-corrosion function
Lining, the low-surface-energy liner is using polytetrafluoroethylene (PTFE) or the low surface energy coat of the vinyl ether co-polymer containing PVF.
Further, the steam jet in the phase transformation coalescence room is inversely arranged with flue gas direction, the steam jet
Top is additionally provided with spiral board.
Further, using condensation tubular demister, the condensation tubular demister adopts many to the condensation demister
The U-tube beam of capillary array composition, upper and lower two-layer U-tube beam dislocation arrangement；The U-tube beam connects with sulfur removal technology waterpipe
It is logical；The first spray irrigation pipe is provided with above the condensation demister.
Further, the electric cleaner is wet electrical dust precipitator, and the second spray irrigation is provided with the top of electric cleaner
Pipe, the wet electrical dust precipitator adopts tubular structure, and the anode board component of electric cleaner is regular hexagon tube bank, and basic material is adopted
With electroconductive frp, cathode line using helical arrangement pipe thorn line；The wet electrical dust precipitator adopts moisture condensation resistant insulator.
The present invention has the advantages that：
(1) depth dust collection method of the invention carries out condensation increase to the PM2.5 fine particles in flue gas after desulfurization, then enters
Row wet-esp, efficiently solves the problems, such as that wet electrical dust precipitator porch grain diameter is too small and it is charged to be difficult to, and improves
Efficiency of dust collection, reaches depth dedusting.
(2) depth dust pelletizing system of the invention increases phase transformation coalescence room in the middle of desulfuration absorbing tower and wet electrical dust precipitator,
The characteristics of using the nearly saturation of flue gas after desulfurization or saturation, steam is sprayed into, while the immixture for passing through spiral board, sets up aqueous vapor and exist
Fine particle surface coring condense required for supersaturated environments, so as to promote coal-fired flue-gas in fine particle condense and become big,
Using power plant's exhaust steam and indirect steam, it is not required to separately set steam generation device, low cost.Phase transformation coalescence is provided with condensation tubular type in room
Demister, further increases degree of supersaturation by condensing phase transformation, continues the microfine for occurring with PM2.5 fine graineds as the nuclei of condensation
Sub- coalescence becomes big, and removes a part of drop, while making smoke distribution evenly, efficiently solves wet electrical dust precipitator entrance
Thing particle diameter is too small causes to be difficult to charged problem for grain, improves efficiency of dust collection, realizes depth dedusting, it is ensured that wet electric outlet drain
Exhaust gas dust concentration is reached less than 5mg/m3。
(3) the condensation tubular demister in depth dust pelletizing system of the invention using many capillaries rearrange it is U-shaped
Tube bank, material is PP or 316L stainless steels, adapts to high humidity and strong corrosive environment, and arranges that enhancing is changed using the dislocation of upper and lower two-layer
Heat and except fog effect, and due to being connected with cooling water in U-tube, causes flue gas to there is temperature difference with tube wall, water condensation in flue gas
Precipitation adheres to fine dust, and fine dust coalescence increases into and becomes the drop with nucleus.
(4) wet electrical dust precipitator in depth dust pelletizing system of the invention adopts tubular structure, the positive plate of anode assemblies
Component is restrained using regular hexagon, and basic material can be electroconductive frp, and cathode line pierces line using pipe, and adopts helical arrangement,
Structural form is succinctly light and handy, the secondary numerical stability of electric field.
(5) condensation tubular demister and wet electrical dust precipitator top in depth dust pelletizing system of the invention is equipped with spray
Flush pipe, the periodically tube bank to tubular demister and wet electrical dust precipitator polar curve and pole plate are rinsed, and flushing water falls into bottom
Desulfuration absorbing tower directly as moisturizing, not new pollution thing.
(6) flue gas depth dust collection method after a kind of wet desulphurization of the invention and system high efficiency removing fine particle and
Aerosol, comprehensively solve flue dust, gypsum rain, aerosol, SO3Etc. various contaminant problems, can be coal-fired using enterprise in thermal power plant etc.
Industry carries out wide popularization and application.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Description of the drawings
Fig. 1 is the flue gas depth dust pelletizing system structural representation in embodiment.
Fig. 2 is condensation tubular demister structural representation (vertical view).
Label in figure：1- desulfuration absorbing towers, 2- phase transformation coalescences room, 21- steam gas distribution pipes, 22- steam jets, 23- eddy flows
Plate, 24- condensation demisters, 3- wet electrical dust precipitators, 31- anode board components, 32- cathode lines, 41- first is sprayed pipe, 42-
Second is sprayed pipe, 241- upper stratas U-tube, 242- lower floors U-tube, 243- cooling water inlet water tanks, 244- cooling water water tanks.
Specific embodiment
Embodiment
Referring to Fig. 1, it is illustrated that in flue gas depth dust pelletizing system be the preferred embodiment of the present invention, it is mainly solidifying including phase transformation
And room 2 and wet electrical dust precipitator 3, phase transformation coalescence room 2 is arranged in the top of desulfuration absorbing tower 1, is inside disposed with steam gas distribution pipe 21, steams
Vapour gas distribution pipe 21 is provided with some steam jets 22, and at the nozzle rear of steam gas distribution pipe 21 spiral board 23 and condenser pipe are provided with
Formula demister 24, wet electrical dust precipitator 3 is arranged in the exit position of phase transformation coalescence room 2, mainly includes anode board component 31 and the moon
Polar curve 32.
Flusher is respectively equipped with condensation demister 24 and the top of wet electrical dust precipitator 3, wherein in condensation demister 24
The first spray irrigation pipe 41 is provided with, wet electrical dust precipitator 3 is provided with the second spray irrigation pipe 42.
The present embodiment is integrally disposed in phase transformation coalescence room 2 and wet electrical dust precipitator 3 in desulfuration absorbing tower 1, forms one
Tower body equipment comprising desulfurization absorption and dust removal process, phase transformation coalescence room 2 is arranged on the top of desulfuration absorbing tower 1, and condensation is removed
Day with fog 24 and wet electrical dust precipitator 3 are successively set on the top of phase transformation coalescence room 2, the anode board component 31 of wet electrical dust precipitator 3
Vertically it is arranged in parallel with cathode line 32, dedusting tower body top arranges chimney breast.
The inwall of phase transformation coalescence room 2 is set to have the low-surface-energy liner for promoting phase transformation effect and preservative efficacy, and this is interior
Lining is coated using low surface energy coatings such as polytetrafluoroethylene (PTFE), the vinyl ether co-polymers containing PVF.
The jet direction of steam jet 22 in phase transformation coalescence room inversely arranges that the top of steam jet 22 is arranged with flue gas direction
There is spiral board 23, promote steam more abundant with smoke contacts, mixing evenly, improves the phase between steam and flue gas fine dust
Become coalescence effect.
With reference to referring to Fig. 2, condensation demister 24 adopts tubular demister, including two-layer is rearranged by many capillaries
U-tube beam, is interspersed between upper strata U-tube 241 and lower floor's U-tube 242, improves the contact area of flue gas and U-shaped condenser pipe,
Condenser pipe material oil recovery work PP or 316L stainless steels, adapt to high humidity and strong corrosive environment, and many capillaries of the U-tube beam enter
Mouth is connected to a cooling water inlet water tank 243, and outlet is connected to a cooling water water tank 244, and cooling water is directly connected to
The fresh water (FW) of sulfur removal technology, technique coolant-temperature gage is 10-40 DEG C.
Condensation demister strengthens heat exchange and except fog effect using upper and lower two-layer U-tube formula dislocation arrangement, and due to U-shaped
In pipe, cooling water is connected with, causes flue gas to there is temperature difference with tube wall, water condensation is separated out and adheres to fine dust in flue gas, fine
The increase of dust coalescence becomes the drop with nucleus.
Wet electrical dust precipitator 3 adopts tubular structure, anode board component 31 to be regular hexagon tube bank, and basic material can be conduction
Fiberglass, cathode line 32 pierces line using pipe, and adopts helical arrangement, and insulator used by wet electrical dust precipitator 3 is that moisture condensation resistant is exhausted
Edge.
When the system of the present embodiment works, flue gas sequentially passes through desulfuration absorbing tower 1, phase transformation coalescence room 2 and wet-esp
Device 3, is finally discharged by chimney, and the flue gas depth dust collection method being capable of achieving after wet desulphurization is de- to wet method in phase transformation coalescence room
Nearly saturation after sulphur or saturated flue gas spray into steam, set up aqueous vapor required for the coring of PM2.5 fine particles surface condenses
Supersaturated environments, so as to promote coal-fired flue-gas in fine particle mutually to condense change big；Flue gas is carried out by condensing demister
Condensation demisting, further increases the degree of supersaturation that fine particle surface coring condenses by condensing phase transformation, continue to occur with
PM2.5 fine particles become big for the minuteness particle coalescence of the nuclei of condensation, and remove the partial drop in flue gas, make smoke distribution more equal
It is even；To carry out being discharged after electric precipitation containing the flue gas for condensing particulate matter after increase finally by wet electrical dust precipitator, it is ensured that flue gas
In dust discharge amount be less than 5mg/m3。
Specifically, flue gas is reaching nearly saturation or full state after the wet desulphurization of desulfuration absorbing tower 1, solidifying into phase transformation
And room 2, the inside of phase transformation coalescence room 2 is with low-surface-energy liner the effects such as promoting phase transformation effect and anti-corrosion, using poly- four
The low surface energy coatings such as PVF, the vinyl ether co-polymer containing PVF are coated.Then by steam gas distribution pipe 21 and steaming
Vapour nozzle 22, sprays into a small amount of steam, and the jet direction of steam jet 22 and flue gas direction adverse current, and after nozzle 22 spiral board is disposed with
23, promote steam more abundant with smoke contacts, mixing evenly, improves the effect of steam phase transforming coalescence.
Mixed by steam and flue gas, set up supersaturated environments of the aqueous vapor required for the coring of fine particle surface condenses,
Fine particle in so as to promote coal-fired flue-gas condenses and becomes big.Steam gas distribution pipe is connected with the vapour system pipeline of power plant, is adopted
With power plant's exhaust steam and indirect steam as steam source, vapo(u)rous degree is 1.10-1.50, is not required to separately set steam generation dress
Put, it is cost-effective.
Be then passed through condense tubular demister 24 further by condense phase transformation and increase degree of supersaturation, continue occur with
PM2.5 becomes big for the minuteness particle coalescence of the nuclei of condensation, and removes a part of drop, while making smoke distribution evenly.
Particulate matter after the increase of the coalescence of phase transformation coalescence room 2 enters wet electrical dust precipitator 3, because particulate matter is supersaturated
In flue gas separate out water parcel, define droplet of the particle diameter more than 30 μm, efficiently solve porch grain diameter it is too small and
Charged problem is difficult to, efficiency of dust collection is improve, depth dedusting is reached, it is ensured that wet-esp outlet dust emission is less than 5mg/
m3, through the flue gas of purification chimney qualified discharge is eventually entered into.
Condensation tubular demister 24 and the top of wet electrical dust precipitator 3 are provided with spray irrigation pipeline 4, periodically to tubular demister
24 tube bank and the polar curve of wet electrical dust precipitator 3 and pole plate are rinsed, and flushing water falls into bottom desulfuration absorbing tower 1 directly as benefit
Water, not new pollution thing.
The dust removing effects of the present embodiment are illustrated below by way of a concrete case.
Example one
Jing after wet desulphurization, dust concentration is 30-50mg/Nm to one coal-fired plant flue gas3, predominantly sulfurous acid droplet, stone
The fine particle such as cream and PM2.5, flue gas is directly entered wet-esp, is affected by fine particle property, is difficult to realize efficient
Dedusting, reaches minimum discharge.Using above-described embodiment, by the nearly saturation of wet-method desulfurized fume or the smoke behavior of saturation, flue gas
Steam phase transforming room is first passed through, power plant's exhaust steam or the indirect steam that vapo(u)rous degree is 1.20 is sprayed into by nozzle, set up aqueous vapor
On PM2.5 fine particles surface coring condense required for supersaturated environments, so as to promote coal-fired flue-gas in fine particle phase
Mutually condense and become big, particle size increases to more than 20 microns, then further across being connected with the cooling technique that temperature is 25 DEG C
The condensation tubular demister condensation phase transformation of water, particle diameter increases further to more than 30 microns, and the particulate matter after coalescence increase is entered
Trapped rapidly after wet-esp, dust concentration discharge can be less than 5mg/Nm3, realize minimum discharge.
Above example is the description of the invention, not limitation of the invention, and the technical staff of the industry should
Solution, the present invention is not restricted to the described embodiments, and simply illustrates that the present invention's is concrete described in above-described embodiment and specification
Operation principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Both fall within scope of the claimed invention with improvement, the claimed scope of the invention is by appending claims and its waits
Effect thing is defined.
Claims (10)
1. the flue gas depth dust collection method after a kind of wet desulphurization, it is characterised in that comprise the steps：
(1) the fine grain coalescences of PM2.5 become big, and to the nearly saturation after wet desulphurization or saturated flue gas steam is sprayed into, and set up water
Gas the coring of PM2.5 fine particles surface condense required for supersaturated environments, so as to promote coal-fired flue-gas in fine particle
Mutually condense and become big；
(2) demisting is condensed, condensation demisting is carried out to flue gas, further increased the coring of fine particle surface by condensing phase transformation and coagulate
The degree of supersaturation of knot, the minuteness particle coalescence for continuing to occur with PM2.5 fine particles as the nuclei of condensation becomes big, and removes in flue gas
Partial drop, makes smoke distribution evenly；
(3) removing of particulate matter after condensing：To carry out being discharged after electric precipitation containing the flue gas for condensing particulate matter after increase, it is ensured that cigarette
Dust discharge amount in gas is less than 5mg/m3。
2. the flue gas depth dust collection method after a kind of wet desulphurization according to claim 1, the steaming in (1st) step
Using power plant's exhaust steam or indirect steam, vapo(u)rous degree is 1.10-1.50 to vapour.
3. the flue gas depth dust collection method after a kind of wet desulphurization according to claim 1, cold in (2nd) step
Solidifying demisting adopts sulfur removal technology water, and technique coolant-temperature gage is 10-40 DEG C.
4. the flue gas depth dust collection method after a kind of wet desulphurization according to claim 1, adopts in (3rd) step
Wet electrical dust precipitator carries out dedusting.
5. the flue gas depth dust pelletizing system after a kind of wet desulphurization, it is characterised in that：Including phase transformation coalescence room, condensation demister and
Electric cleaner；
The phase transformation coalescence room is docked with flue gas desulphurization system, and some steam jets, the steam are provided with phase transformation coalescence room
Nozzle is connected by steam gas distribution pipe with vapour system；
The electric cleaner is docked with the outlet of phase transformation coalescence room, and the condensation demister is arranged on phase transformation coalescence room and electric precipitation
On passage between device.
6. the flue gas depth dust pelletizing system after a kind of wet desulphurization according to claim 5, the phase transformation coalescence room is arranged
In the top of desulfuration absorbing tower, the condensation demister and electric cleaner are successively set on the top of phase transformation coalescence room, the electricity
The anode board component of deduster and cathode line are vertically arranged in parallel, and form monoblock type dedusting tower body, the dedusting tower body top
Chimney breast is set.
7. the flue gas depth dust pelletizing system after a kind of wet desulphurization according to claim 5 or 6, in the phase transformation coalescence room
Wall is arranged has the low-surface-energy liner for promoting phase transformation effect and anti-corrosion function, and the low-surface-energy liner adopts polytetrafluoroethylene (PTFE)
Or the low surface energy coat of the vinyl ether co-polymer containing PVF.
8. the flue gas depth dust pelletizing system after a kind of wet desulphurization according to claim 7, in the phase transformation coalescence room
Steam jet is inversely arranged with flue gas direction, and above the steam jet spiral board is additionally provided with.
9. the flue gas depth dust pelletizing system after a kind of wet desulphurization according to claim 5 or 6, the condensation demister is adopted
With condensation tubular demister, if the U-tube beam that the condensation tubular demister is made up of including dried layer capillary array, upper and lower two
Dislocation arrangement between layer U-tube beam；U-tube beam is connected with sulfur removal technology waterpipe；
The first spray irrigation pipe is provided with above the condensation demister.
10. the flue gas depth dust pelletizing system after a kind of wet desulphurization according to claim 5 or 6, the electric cleaner is
Wet electrical dust precipitator, is provided with the second spray irrigation pipe at the top of electric cleaner, and the wet electrical dust precipitator adopts tubular structure,
The anode board component of electric cleaner is regular hexagon tube bank, and basic material adopts electroconductive frp, cathode line to adopt helical arrangement
Pipe thorn line；
The wet electrical dust precipitator adopts moisture condensation resistant insulator.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107224864A (en) * | 2017-07-21 | 2017-10-03 | 北京哈宜节能环保科技开发股份有限公司 | The device and its application method of combined pollutant in a kind of removing fire coal boiler fume |
| CN107321161A (en) * | 2017-08-04 | 2017-11-07 | 江苏科行环保科技有限公司 | A kind of single column desulfurization cooperates with dedusting minimum discharge device |
| CN107469536A (en) * | 2017-09-05 | 2017-12-15 | 浙江省能源与核技术应用研究院 | Based on the expanding dust arrester of the separation of dust thickness and particle dust and method |
| CN109046780A (en) * | 2018-07-22 | 2018-12-21 | 华电电力科学研究院有限公司 | A kind of collaboration condensation wet electrical dust precipitator and its working method |
| CN109157934A (en) * | 2018-09-03 | 2019-01-08 | 安徽盛运重工机械有限责任公司 | Deduster is used in a kind of polishing of metal |
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| CN110102406B (en) * | 2019-04-02 | 2024-05-03 | 华北电力大学（保定） | Cold electrode electric dust removal process for agglomerating and capturing condensable particles |
| CN110882608A (en) * | 2019-11-27 | 2020-03-17 | 攀枝花市蓝鼎环保科技有限公司 | Flue gas desulfurization dust removal defogging coupled system |
| CN111760432A (en) * | 2020-07-21 | 2020-10-13 | 江西庞泰环保股份有限公司 | Oxidation-reduction desulfurization process and device |
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Application publication date: 20170510 |