CN107875824A - A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration - Google Patents
A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration Download PDFInfo
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- CN107875824A CN107875824A CN201711390463.3A CN201711390463A CN107875824A CN 107875824 A CN107875824 A CN 107875824A CN 201711390463 A CN201711390463 A CN 201711390463A CN 107875824 A CN107875824 A CN 107875824A
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- 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
- B01D53/75—Multi-step processes
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- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention discloses a kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, including tubular type oxidation reactor（1）, the tubular type oxidation reactor（1）Top with conveying the conveyance conduit containing SO2, NOx, the flue gas for needing purified treatment of dust granules be connected, tubular type oxidation reactor（1）Bottom be arranged on washing packed tower（5）Bottom and washing packed tower（5）Top set wet electrical dust precipitator（10）, tubular type oxidation reactor（1）, washing packed tower（5）, wet electrical dust precipitator（10）Form the main part of denitration desulfurizing dust-collector；Described tubular type oxidation reactor（1）Pass through pipeline and ozone generator（4）It is connected, ozone generator（4）For tubular type oxidation reactor（1）Interior Strong oxdiative reaction provides ozone.Compared with existing equipment, equipment is taken up an area saves more than 40%, saves equipment investment more than 20%, operating cost saving more than 20% device of the present invention.
Description
Technical field
The present invention relates to each class A fuel A, smelting（It is metallurgical）, coal-fired or biomass power generation, the kiln gas processing skill for heating class
Art field, it is specifically a kind of to carry out deep desulfuration denitration dust collecting to remove the SO in flue gas2、NOx, dust granules, two
The device to the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration of environment harmful such as Evil English.
Background technology
The flue gas of all kinds of kiln discharges often contains SO2、NOxIt is and other such as HF, HCl, H2More than two kinds of S etc. is harmful to group to environment
Divide and dust particle, dirty flue gas adsorbing and trapping processing are always the important process process unit of flue gas cleaning treatment, method is very
It is more：If denitration is using SNCR methods, the contour middle warm area denitration of SCR methods, low nitrogen burning etc.；The method of desulfurization has as many as tens kinds, such as
Calcium method, sodium method, ammonia process, magnesium processes, oxidized metal method, peroxide passivation, amine process, activated coke etc., washing or electrofiltration dedusting have
Wash void tower, washing plate tower, Venturi tube washing, dynamic wave scrubbing, wet electrical dust precipitator, bag filter process etc..It is domestic at present main
Introduce EDV methods, LoTOxTMMethod, WGS+Method is imitated its method and improved, and denitration, desulfurization, dedusting are integrated into same dress
In putting, but exist and invest the problems such as huge, operating cost is high, equipment corrosion is serious, processing depth is inadequate.For it is economical,
Simple efficient, the integrated wet denitration of long-term operation, desulfurization, the ultra-clean processing of dust removal integrated wet method, are always in industry
The effort problem of skilled worker.
The content of the invention
The purpose of the present invention is the problem of presence for prior art, there is provided one kind can carry out deep desulfuration denitration dust collecting
To remove the SO in flue gas2、NOx, dust granules, bioxin etc. surpasses to the dust removal integrated wet method of desulphurization denitration of environment harmful
The device of net processing flue gas.
The purpose of the present invention solves by the following technical programs：
A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, including tubular type oxidation reactor, its feature exist
In：Contain SO with conveying in the top of the tubular type oxidation reactor2, NOx, dust granules the flue gas for needing purified treatment conveying
Pipeline is connected, and the bottom of tubular type oxidation reactor is arranged on the bottom for washing packed tower and the top setting of washing packed tower is wet
Formula electric cleaner, tubular type oxidation reactor, washing packed tower, wet electrical dust precipitator form the main part of denitration desulfurizing dust-collector
Point；Described tubular type oxidation reactor is connected by pipeline with ozone generator, and ozone generator is tubular type oxidation reactor
Interior Strong oxdiative reaction provides ozone；Contain SO2, NOx, dust granules need the flue gas of purified treatment to be sent into tubular type oxygen through pipeline
Change the top of reactor, the NO in the flue gas flowed from up to down in tubular type oxidation reactorxWith O3Generation Strong oxdiative reacts,
By NOxIt is oxidized to high-valence state compound N soluble in waterxOy, the reacted flue gas of Strong oxdiative enter in washing packed tower from it is lower to
Upper flowing and the circulation fluid of addition absorbent carry out counter current contacting reactive absorption NxOy、SO2And the dust granules in flue gas are carried out
Washing, the fine droplets of flue gas and its entrainment after scrubbed absorption continue upwardly into wet electrical dust precipitator, charged through discharging
And the lower fine droplets of electric field force effect are completely separated with the particulate matter in flue gas, acid mist, ultra-clean flue gas is from wet-esp
The top discharge of device.
Ozone spray distribution device and spiral-flow type urgency diffusion mixer are provided with described tubular type oxidation reactor, spiral-flow type is anxious
Diffusion mixer is located at the lower section of ozone spray distribution device, the O that ozone spray distribution device spirally sprays downwards3With from up to down
NO in the flue gas of flowingxIn the presence of spiral-flow type urgency diffusion mixer, NO can be madexWith O3Within 0.3~1.5 second time
Complete Strong oxdiative reaction.
Described ozone spray distribution device is connected by pipeline with ozone generator.
The middle part of the washing packed tower is provided with packing layer and the top of packing layer is provided with fountain distributor, fountain point
Cloth device is connected by the circulation liquid pipe with recycle liquid pump with washing the circulation fluid storage tank of filler tower bottom；Fountain distributor
The circulation fluid of addition absorbent is sprayed downwards carries out counter current contacting reactive absorption N with the flue gas of bottom-up flowingxOy、SO2It is and right
Dust granules in flue gas are washed.
Structured packing or plate-type corrugated shape filler of the filler that described packing layer uses for PP/PVD/PTFE materials；Fill out
The top of the bed of material sets one layer or two layers of fountain distributor, and every layer of fountain distributor is circulated using individually corresponding therewith
Liquid pump supplies circulation fluid.
For described circulation liquid pipe by shunt valve with being connected at the top of settler or filter, settler or filter will
Dirt mud filtering in circulation fluid is discharged and the clear liquid after filtering is back to the circulation fluid of washing filler tower bottom by clear liquid pipe
In storage tank.
The circulation fluid storage tank of the washing filler tower bottom is by the absorbent liquid supplementation pipe with absorbent make-up pump with inhaling
Receive agent storage tank to be connected, the pH value for supplementing circulation fluid by absorbent make-up pump absorbent circulation fluid is maintained at 5~10.
The circulation fluid storage tank of described washing filler tower bottom is connected with the waste liquid discharge pipe with liquid waste discharge pump.
Baffle type defoaming device or unit mould are provided between the top of the washing packed tower and the bottom of wet electrical dust precipitator
Block formula eddy flow dehydrator, baffle type defoaming device or cell modular eddy flow dehydrator can be by the flue gases and its folder after washing absorption
Drop of the particle diameter more than 5 μm or the drop containing dust granules remove in the fine droplets of band.
The top of baffle type defoaming device or cell modular the eddy flow dehydrator is provided with flushing/shower device, and flushing/shower device can
Backwash is carried out to baffle type defoaming device or cell modular eddy flow dehydrator.
The anode tube of the wet electrical dust precipitator is anti-corrosion, conductive, flame retardant type CFRP materials honeycomb-shaped structure or anti-corrosion conjunction
Golden steel material honeycomb-shaped structure, the inscribed circle diameter of anode tube is 300mm/330mm/350mm/360mm/, anode length of tube is
4.0~6.0m；Along the cathode line of fluidization treatment be the nickel-base alloy of anti-corrosion electrochemical corrosion resistant by prickle, duplex steel alloys,
Titanium alloy, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high frequency high voltage dc power source, the confession of wet electrical dust precipitator
Piezoelectric voltage is 40~70KV, 0.1~1.0mA/m of cathode line discharge current density；In cathode line electric discharge charged and electric field force effect
Under, the flue gas after washing absorption and its particulate in the fine droplets of entrainment and drop are driven to anode tube, Charge particle release
Electric charge, dust and is flowed down naturally by drop dissolving or the nuisance of attached collection from anode tube.
Tail smoke discharging analyzer is provided with the top vent of the wet electrical dust precipitator.
The housing of the tubular type oxidation reactor is made of anti-corrosion oxytolerant alloy, and the housing for washing packed tower uses
FRP, engineering plastics or steel alloy are made, and the housing of wet electrical dust precipitator uses FRP, engineering plastics or conjunction with flame-retarding characteristic
Jin Gang is made.
The present invention has the following advantages compared with prior art：
The device of the present invention can contain SO simultaneously in treatment furnace kiln gas body2、NOx, dust particle etc. flue gas, by tubular type oxygen
Change reactor to be joined directly together with washing packed tower, wash packed tower top and wet electrical dust precipitator is connected to form integral eliminating dampness method and surpassed
Net processing makeup is put, the NO in flue gas after processingxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, dust granules
Thing content is 0~10mg/m3, and most bioxin in flue gas are removed, to reach the purification and washing of setting or assimilation effect；
Compared with denitration, desulfurization, dust removing units with routine are separately handled, equipment take up an area save more than 40%, save equipment investment 20% with
Upper, operating cost saves more than 20%, has the characteristics of gas cleaning intensity height, reduced investment, obvious efficiency high and energy-saving effect,
Therefore suitably promote the use of.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration of the present invention.
Wherein：1-tubular type oxidation reactor；2-ozone spray distribution device；3-spiral-flow type urgency diffusion mixer；4-smelly
Oxygen Generator；5-washing packed tower；6-packing layer；7-fountain distributor；8-baffle type defoaming device or cell modular
Eddy flow dehydrator；9-flushing/shower device；10-wet electrical dust precipitator；11-tail smoke discharging analyzer；12-settler or filtering
Device；13-clear liquid pipe；14-recycle liquid pump；15-liquid waste discharge pump；16-absorbent make-up pump；17-absorbent storage tank.
Embodiment
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1：A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, including tubular type oxidation are anti-
Device 1 is answered, top and the conveying of the tubular type oxidation reactor 1 contain SO2, NOx, dust granules the flue gas for needing purified treatment it is defeated
Pipeline is sent to be connected, the bottom of tubular type oxidation reactor 1 is arranged on the bottom of washing packed tower 5 and washs the top of packed tower 5
Wet electrical dust precipitator 10 is set, and tubular type oxidation reactor 1, washing packed tower 5, wet electrical dust precipitator 10 form denitration desulfurization and dedusting
The main part of device；The housing of tubular type oxidation reactor 1 uses anti-corrosion oxytolerant alloy（Such as S31603, duplex steel alloys）System
Into the housing for washing packed tower is made of FRP, engineering plastics or steel alloy, and the housing of wet electrical dust precipitator 10, which uses, to be carried
FRP, engineering plastics or the steel alloy of flame-retarding characteristic are made.The tubular type oxidation reactor 1 is connected by pipeline with ozone generator 4
Logical, ozone generator 4 provides ozone, O for the Strong oxdiative reaction in tubular type oxidation reactor 13Using air-source or pure oxygen source of the gas
Produced by the whole dc source of high-frequency and high-voltage in ozone generator 4；During use：Contain SO2, NOx, the need of dust granules
The flue gas of purified treatment is sent into the top of tubular type oxidation reactor 1 through pipeline, needs the flue gas of purified treatment to refer to SO2Content be 35~
8000mg/m3、NOxContent is 50~1200mg/m3, dust particle content be 0~150mg/m3And temperature is 0~180 DEG C
Pending flue gas；NO in the flue gas flowed from up to down in tubular type oxidation reactor 1xWith O3Generation Strong oxdiative reacts, and
O in tubular type oxidation reactor 13Mol ratio with the NO in flue gas is 0.8~2.0, by NOxIt is soluble in water to be oxidized to high-valence state
Compound NxOy, N caused by Strong oxdiative reactionxOyIncluding NO3、N2O5、NO2、N2O3；The reacted flue gas of Strong oxdiative, which enters, to be washed
Wash bottom-up flowing and the circulation fluid of addition absorbent in packed tower 5 and carry out counter current contacting reactive absorption NxOy、SO2And to cigarette
Dust granules in gas are washed, and the fine droplets of flue gas and its entrainment after scrubbed absorption continue upwardly into wet type electricity
Deduster 10, act on lower fine droplets through the charged and electric field force that discharges and be completely separated with the particulate matter in flue gas, acid mist, surpassed
Neat stress from the top discharge of wet electrical dust precipitator 10, the ultra-clean flue gas of the top discharge of wet electrical dust precipitator 10 refers to：Processing
NO in flue gas afterwardsxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3.Should
Device list set processing exhaust gas volumn is 0~1600000m3/ h, if needed in the flue gas of purified treatment, dust content is too high, SO2Content
It is too high to need to use pretreatment measure.
In said structure, ozone spray distribution device 2 and spiral-flow type urgency diffusion mixer are provided with tubular type oxidation reactor 1
3, spiral-flow type urgency diffusion mixer 3 is located at the lower section of ozone spray distribution device 2 and ozone spray distribution device 2 passes through pipeline and ozone
Generator 2 is connected, the O that ozone spray distribution device 2 spirally sprays downwards3With the NO in the flue gas that flows from up to downxRevolving
In the presence of streaming urgency diffusion mixer 3, NO can be madexWith O3Strong oxdiative reaction was completed within 0.3~1.5 second time.Washing is filled out
The middle part of material tower 5 is provided with packing layer 6, structured packing or plate-type corrugated of the filler that packing layer 6 uses for PP/PVD/PTFE materials
Shape filler；The top of packing layer 6 is provided with one layer or two layers of fountain distributor 7, and fountain distributor 7 is by with recycle liquid pump
14 circulation liquid pipe is connected with the circulation fluid storage tank of washing packed tower 5 bottom, and every layer of use of fountain distributor 7 is single therewith
Recycle liquid pump 14 supplies circulation fluid corresponding to solely；Fountain distributor 7 downwards spray addition absorbent circulation fluid with from it is lower to
The flue gas of upper flowing carries out counter current contacting reactive absorption NxOy、SO2And the dust granules in flue gas are washed.Circulate liquid pipe
It is connected by shunt valve with the top of settler or filter 12, settler or filter 12 filter the dirt mud in circulation fluid
Discharge and be back to the clear liquid after filtering in the circulation fluid storage tank of washing packed tower 5 bottom to keep circulation by clear liquid pipe 13
The clear liquid circulation of system, circulation fluid are filtered through measure circulation fluid density to control solution salt degree of unsaturation, prevent filler from inhaling
Receive scrubbing tower crystallization, deposition blocks.The circulation fluid storage tank in washing packed tower 5 bottom passes through with absorbent make-up pump 16 in addition
Absorbent liquid supplementation pipe be connected with absorbent storage tank 17, by absorbent make-up pump 16 to circulation fluid supplement absorbent follow
The pH value of ring liquid is maintained at 5~10, and absorbent is generally alkaline absorbent or additive or dioxygen water absorbent, alkaline absorbent
Including ammoniacal liquor, sodium hydroxide solution, aqua calcis, containing magnesium oxide solution, urea liquid etc.；Wash the bottom of packed tower 5
Circulation fluid storage tank is connected with the waste liquid discharge pipe with liquid waste discharge pump 15.Removed at the top of washing packed tower 5 with wet type electricity
Baffle type defoaming device or cell modular eddy flow dehydrator 8, baffle type defoaming device or unit mould are provided between the bottom of dirt device 10
Block formula eddy flow dehydrator 8 can by particle diameter in the flue gas after washing absorption and its fine droplets of entrainment more than 5 μm drop or
Drop containing dust granules removes, and the top of the baffle type defoaming device or cell modular eddy flow dehydrator 8 is provided with flushing/shower device
9, flushing/shower device 9 can carry out backwash to keep its cleaning to exempt to tie to baffle type defoaming device or cell modular eddy flow dehydrator 8
Dirt.The anode tube of wet electrical dust precipitator 10 is anti-corrosion, conductive, flame retardant type CFRP materials honeycomb-shaped structure or corrosion resistant alloy steel material
Honeycomb-shaped structure, the inscribed circle diameter of anode tube is 300mm/330mm/350mm/360mm/, anode length of tube be 4.0~
6.0m；Along the cathode line of fluidization treatment it is the nickel-base alloy of anti-corrosion electrochemical corrosion resistant by prickle, duplex steel alloys, titanium close
Gold, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high frequency high voltage dc power source, the power supply of wet electrical dust precipitator 10
Voltage is 40~70KV, 0.1~1.0mA/m of cathode line discharge current density；In the case where cathode line electric discharge is charged and electric field force acts on,
Flue gas after washing absorption and its particulate in the fine droplets of entrainment and drop are driven to anode tube, Charge particle release electricity
Lotus, dust and is flowed down naturally by drop dissolving or the nuisance of attached collection from anode tube.
Tail smoke discharging analyzer 11 is provided with the top vent of wet electrical dust precipitator 10 simultaneously, is discharged fume qi leel by tail
Analyzer 11 measures the NO of wet-esp exiting flue gasx、SO2, dust particle content, adjust O3The amount of feeding, the alkaline desulfurization of adjustment
Agent or the catalyst amount of feeding, adjustment wet electrical dust precipitator 10 delivery, adjustment circulation fluid discharge rate so that after processing in flue gas
NOxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3, and remove in flue gas
Most bioxin, to reach the purification and washing of setting or assimilation effect.
The device of the present invention in use, will contain NO firstx、SO2, dust particle and other such as HF, HCl, bioxin
Flue gas, it is sent into through flue in tubular type oxidation reactor 1 and causes NOxWith O3It is quick that Strong oxdiative reaction occurs, generate height soluble in water
Valency nitrogen oxides, the reacted flue gas of Strong oxdiative enter washing packed tower 5 and entered with the alkaline absorbent in circulation fluid or additive
Row NOx、SO2Absorption, and trapping absorption is carried out to dust particle, specially flue gas Ta Nei occur simultaneously mass transfer, heat transfer,
The physics chemical actions such as absorption, adiabatic evaporation, NxOy、SO2, the washed absorption capture purification such as soot dust granule；Wet flue gas is through baffle plate
After formula demister or cell modular eddy flow dehydrator 8 remove big particle diameter drop, flue gas enters wet electrical dust precipitator 10, in negative electrode
Discharge under the effect of charged and electric field force, particulate and drop are driven to anode tube, Charge particle release electric charge, dust and molten by drop
The nuisance of solution flows down naturally from anode tube；Tail smoke discharging analyzer 11 is to the NO in tail smoke dischargingx、SO2, dust particle it is dense
Degree is detected, by automatic or auto-manual control system adjustment ozone generator 3 for ozone amount, adjustment washing packed tower
5 absorbent supply, the discharge circulating fluid volume of recycle liquid pump 14 is adjusted, so as to the NO in flue gas after control processxContent be 0~
50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3, and remove the overwhelming majority two in flue gas
Evil English, to realize the purification and washing of setting or assimilation effect.During washing packed tower 5 is handled：Recycle liquid pump 14 is to wash
Wash packed tower 5 and washing absorption liquid is provided, absorbing liquid sprays distribution through one layer or two layers of fountain distributor 7 and fallen into packing layer 6
Complete to absorb washing process with flue gas adverse current high-efficient contact, with the progress of absorption, absorbent or catalyst disappears in circulation fluid
Consumption from absorbent storage tank 17, it is necessary to be added；With the solid content increase in circulation fluid, circulation fluid branch is partly into
Settler or filter 12 are concentrated, and clear liquid returns to washing packed tower 5 and circulated, outside high solids underflow liquid discharge system
Go to handle.
The device of the present invention can contain SO simultaneously in treatment furnace kiln gas body2、NOx, dust particle etc. flue gas, will manage
Formula oxidation reactor 1 is joined directly together with washing packed tower 2, washs the top of packed tower 2 and wet electrical dust precipitator 10 is connected to form one
The ultra-clean processing makeup of body eliminating dampness method is put, the NO in flue gas after processingxContent is 0~50mg/m3、SO2Content is 0~35mg/
m3, dust particle content be 0~10mg/m3, and most bioxin in flue gas are removed, to reach the purification and washing of setting
Or assimilation effect；Compared with the denitration, desulfurization, dust removing units of routine are separately handled, equipment takes up an area saving more than 40%, saving is set
Standby investment more than 20%, operating cost save more than 20%, have gas cleaning intensity height, reduced investment, efficiency high and energy-saving effect
The characteristics of obvious, therefore suitably promote the use of.
The technological thought of above example only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, the scope of the present invention is each fallen within
Within；The technology that the present invention is not directed to can be realized by prior art.
Claims (13)
1. a kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, including tubular type oxidation reactor（1）, it is special
Sign is：The tubular type oxidation reactor（1）Top and conveying contain SO2、NOx, dust granules the flue gas for needing purified treatment
Conveyance conduit be connected, tubular type oxidation reactor（1）Bottom be arranged on washing packed tower（5）Bottom and washing packed tower
（5）Top set wet electrical dust precipitator（10）, tubular type oxidation reactor（1）, washing packed tower（5）, wet electrical dust precipitator
（10）Form the main part of denitration desulfurizing dust-collector；Described tubular type oxidation reactor（1）Pass through pipeline and ozone generator
（4）It is connected, ozone generator（4）For tubular type oxidation reactor（1）Interior Strong oxdiative reaction provides ozone；Contain SO2、NOx、
The flue gas for needing purified treatment of dust granules is sent into tubular type oxidation reactor through pipeline（1）Top, in tubular type oxidation reactor
（1）NO in the flue gas inside flowed from up to downxWith O3Generation Strong oxdiative reacts, by NOxIt is oxidized to high-valence state change soluble in water
Compound NxOy, the reacted flue gas of Strong oxdiative, which enters, washs packed tower（5）Interior bottom-up flowing and the circulation fluid of addition absorbent
Carry out counter current contacting reactive absorption NxOy、SO2And the dust granules in flue gas are washed, flue gas after scrubbed absorption and
Its fine droplets carried secretly continues upwardly into wet electrical dust precipitator（10）, lower fine droplets are acted on through the charged and electric field force that discharges
It is completely separated with the particulate matter in flue gas, acid mist, ultra-clean flue gas is from wet electrical dust precipitator（10）Top discharge.
2. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that：
Described tubular type oxidation reactor（1）In be provided with ozone spray distribution device（2）With spiral-flow type urgency diffusion mixer（3）, spiral-flow type
Anxious diffusion mixer（3）Positioned at ozone spray distribution device（2）Lower section, ozone spray distribution device（2）Spirally spray downwards
O3With the NO in the flue gas that flows from up to downxIn spiral-flow type urgency diffusion mixer（3）In the presence of, NO can be madexWith O3
Strong oxdiative reaction is completed in 0.3~1.5 second time.
3. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 2, it is characterised in that：
Described ozone spray distribution device（2）Pass through pipeline and ozone generator（2）It is connected.
4. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that：
The washing packed tower（5）Middle part be provided with packing layer（6）And packing layer（6）Top be provided with fountain distributor（7）, spray
Formula distributor（7）By with recycle liquid pump（14）Circulation liquid pipe with washing packed tower（5）The circulation fluid storage tank of bottom is connected
It is logical；Fountain distributor（7）The circulation fluid of addition absorbent is sprayed downwards carries out counter current contacting with the flue gas of bottom-up flowing
Reactive absorption NxOy、SO2And the dust granules in flue gas are washed.
5. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 4, it is characterised in that：
Described packing layer（6）Structured packing or plate-type corrugated shape filler of the filler used for PP/PVD/PTFE materials；Packing layer
（6）Top set one layer or two layers of fountain distributor（7）, and every layer of fountain distributor（7）Using individually corresponding therewith
Recycle liquid pump（14）Supply circulation fluid.
6. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 4, it is characterised in that：
Described circulation liquid pipe passes through shunt valve and settler or filter（12）Top be connected, settler or filter（12）Will
Dirt mud filtering in circulation fluid is discharged and the clear liquid after filtering is passed through into clear liquid pipe（13）It is back to washing packed tower（5）Bottom
In circulation fluid storage tank.
7. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 4, its feature exist
In：The washing packed tower（5）The circulation fluid storage tank of bottom passes through with absorbent make-up pump（16）Absorbent liquid supplementation pipe with
Absorbent storage tank（17）It is connected, passes through absorbent make-up pump（16）The pH value of circulation fluid is protected circulation fluid supplement absorbent
Hold 5~10.
8. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 4, its feature exist
In：Described washing packed tower（5）The circulation fluid storage tank of bottom is with carrying liquid waste discharge pump（15）Waste liquid discharge pipe be connected.
9. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that：
The washing packed tower（5）Top and wet electrical dust precipitator（10）Bottom between be provided with baffle type defoaming device or unit module
Formula eddy flow dehydrator（8）, baffle type defoaming device or cell modular eddy flow dehydrator（8）Can by the flue gas after washing absorption and
Drop of the particle diameter more than 5 μm or the drop containing dust granules remove in its fine droplets carried secretly.
10. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 9, its feature exist
In：Baffle type defoaming device or cell modular the eddy flow dehydrator（8）Top be provided with flushing/shower device（9）, flushing/shower device（9）
Can be to baffle type defoaming device or cell modular eddy flow dehydrator（8）Carry out backwash.
11. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist
In：The wet electrical dust precipitator（10）Anode tube be anti-corrosion, conductive, flame retardant type CFRP materials honeycomb-shaped structure or corrosion resistant alloy
Steel material honeycomb-shaped structure；Along the cathode line of fluidization treatment it is the nickel-base alloy of anti-corrosion electrochemical corrosion resistant by prickle, two-phase
Steel alloy, titanium alloy, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high frequency high voltage dc power source；In cathode line
Discharge under the effect of charged and electric field force, the flue gas after washing absorption and its particulate in the fine droplets of entrainment and drop are driven to
Anode tube, Charge particle release electric charge and are flowed down dust naturally by drop dissolving or the nuisance of attached collection from anode tube.
12. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 11, its feature
It is：The wet electrical dust precipitator（10）Top vent at be provided with tail smoke discharging analyzer（11）.
13. the device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist
In：The tubular type oxidation reactor（1）Housing be made of anti-corrosion oxytolerant alloy, wash packed tower（5）Housing use
FRP, engineering plastics or steel alloy are made, wet electrical dust precipitator（10）Housing use with flame-retarding characteristic FRP, engineering plastics
Or steel alloy is made.
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| CN201711390463.3A CN107875824A (en) | 2017-12-21 | 2017-12-21 | A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
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| CN201711390463.3A CN107875824A (en) | 2017-12-21 | 2017-12-21 | A kind of device of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
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| CN107875824A true CN107875824A (en) | 2018-04-06 |
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