CN106925090A - Flue gas multiple pollutant minimum discharge ammonia process DDC techniques and device - Google Patents
Flue gas multiple pollutant minimum discharge ammonia process DDC techniques and device Download PDFInfo
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- CN106925090A CN106925090A CN201710176793.6A CN201710176793A CN106925090A CN 106925090 A CN106925090 A CN 106925090A CN 201710176793 A CN201710176793 A CN 201710176793A CN 106925090 A CN106925090 A CN 106925090A
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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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- 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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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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
- B01D53/75—Multi-step processes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/245—Preparation from compounds containing nitrogen and sulfur
- C01C1/246—Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/608—Sulfates
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
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Abstract
The invention discloses flue gas multiple pollutant minimum discharge ammonia process DDC techniques and device, flue gas sequentially passes through following steps, into neat stress after discharge；Enriching section, after ammonium sulfate spray flue gas, produces fog and concentrate；Absorber portion, ammonium sulfite solution spray fog, absorbs the SO in fog2Afterwards, desulfurization fog and absorbing liquid are produced；Purifying and dedusting demisting section, after desulfurization fog is through washing, electricity decontamination, produces neat stress and cleaning solution.According to the flow direction of flue gas, the core tower body of the device is divided into three by the mutually isolated functional areas of column plate, difference in functionality area rises gas cap and is interconnected by the vortex-flow and defrosting on column plate.Three functional areas form three independent circulation loops respectively by pump, pipeline with outside groove tank.The covering device design science, characteristics of compact layout, desulfurization dust-removing efficiency is high, has prevented formation and the flue gas hangover falling phenomenon of aerosol.Operation steady in a long-term, realizes minimum discharge, with very strong practicality and wide applicability.
Description
Technical field
The present invention relates to a kind of technique and device, and in particular to a kind of flue gas multiple pollutant minimum discharge ammonia process DDC techniques
And device.
Background technology
In recent years, air pollution is increasingly severe, causes the extensive concern of society, and country in succession pushes away in air improvement
The environmental protection policy of correlation is gone out, discharge standard is also more and more severeer.Shi Ge fossil fuels big country of China, wherein coal consumption accounts for energy
Source ratio is up to 70%.The pollutants such as substantial amounts of dust granules, sulfur dioxide can be discharged in traditional fossil fuel combustion process,
Cause atmosphere pollution serious, jeopardize human health.
At present, at home, boiler smoke administers the ripe lime stone-calcium method that is mainly, and the absorbent that calcium method is used is stone
Lime stone, substantial amounts of exploitation causes soil erosion, destruction ecological, can not only produce CO2, aggravates greenhouse effects, and can produce big
Amount is difficult to the high slat-containing wastewater for the treatment of..In recent years, process of desulfurization for boiler flue gas because of its reduced investment, take up an area few, deposed ammonia can be used
Sulfur dioxide absorption, the byproduct of ammonium sulfate of generation has economic worth higher, and the technique is occupied in flue gas desulfurization market
Share is increasing.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of flue gas multiple pollutant minimum discharge ammonia process
DDC（Desulfurization- Dedusting- Cleansing）Technique and device.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
Flue gas multiple pollutant minimum discharge ammonia process DDC techniques, flue gas sequentially passes through following steps, into neat stress after discharge；
S1, enriching section, after ammonium sulfate spray flue gas, produce fog and concentrate；
S2, absorber portion, ammonium sulfite solution spray fog, absorb the SO in fog2Afterwards, desulfurization fog and absorbing liquid are produced；
S3, purifying and dedusting demisting section, after desulfurization fog is through washing, electricity decontamination, produce neat stress and cleaning solution；
The concentrated pump of concentrate in the step S1 is sprayed in enriching section interior circulation；
The ammonium sulfite that absorbing liquid in the step S2 regenerates after mixing with ammoniacal liquor, sprays through absorption pump in absorber portion interior circulation
Drench；
Cleaning solution in the step S3 is sprayed through washing pump in purifying and dedusting demisting section interior circulation；
After absorbing liquid and oxidation air mixed oxidization in the step S2, the ammonium sulfate of generation imports the concentrate of step S1
In.
Above-mentioned electricity decontamination is to remove droplet, fine particle, the line-net formula electricity dirt separator by line-net formula electricity dirt separator
Including cathode line and line-net formula positive plate.
Desulfurization fog in above-mentioned steps S2 by after pre- washing and pre- demisting, into purifying and dedusting demisting section.
After above-mentioned absorbing liquid mixes with oxidation air, sprayed in enriching section and/or absorber portion through absorption pump.
The device of above-mentioned flue gas multiple pollutant minimum discharge ammonia process DDC techniques is applicable, flue gas multiple pollutant self-absorption tower enters
Mouthful enter, concentrated section successively, absorber portion, purifying and dedusting demisting section, into neat stress after from tower top outlet discharge；
The enriching section, absorber portion and purifying and dedusting demisting section, the column plate for rising gas cap by some vortex-flow and defrostings of band separate；
Be respectively equipped with some spray throwers in the enriching section, absorber portion and purifying and dedusting demisting section, spray liquid be respectively ammonium sulfate,
Ammonium sulfite and water；The section outlet of purifying and dedusting demisting is provided with line-net formula electricity dirt separator；
The concentrated pump circulation of concentrate of the enriching section discharge is sprayed in enriching section；
The absorbing liquid of the absorber portion discharge separately flows into ammonification surge tank, is being inhaled by buffering tank connected absorption pump with ammonification
Receive section interior circulation spray；With inflow oxidation trough, aoxidize trench bottom and be provided with oxidation air distributor pipe, cell wall is provided with and connects overflowing for enriching section
Outlet；
After the cleaning solution of the purifying and dedusting demisting section discharge enters water washing tank, followed in purifying and dedusting demisting section by washing pump
Ring spray is drenched.
Further, above-mentioned enriching section top is provided with the spray thrower of some opening upwards, and the spray thrower passes through absorption pump
It is connected with oxidation trough.
Further, some demisters are provided with the top of above-mentioned absorber portion, it is upward that the bottom of the demister is provided with spout
Spray thrower, spray liquid is process water.
Further, the spray thrower in above-mentioned purifying and dedusting demisting section constitutes some washing layers, leads between the washing layer
The column plate cut-off that gas cap is risen with some vortex-flow and defrostings is crossed, after the cleaning solution of washing layer discharge enters water washing tank, is existed by washing pump
Washing layer interior circulation spray.
Further, above-mentioned line-net formula electricity dirt separator bottom is provided with the upward spray thrower of some spouts, and spray liquid is technique
Water.
Further, above-mentioned enriching section is provided with the slosh pump that outlet conduit connects venturi-type eductors, and it is empty that bottom is provided with oxidation
Qi leel cloth pipe network.
Further, above-mentioned vortex-flow and defrosting rises the cylinder that gas cap is provided with baffle plate including top, and cylinder top side portion is provided with outlet
Mouthful, some swirl vanes for circularizing distribution are provided with cylinder.
Further, if being provided with dried layer bubble cutter in above-mentioned oxidation trough, it is provided with the oxidation air point of some aerators
Stringing is arranged on the bottom of bubble cutter, and the bubble cutter is any one in grid, porous plate or filler.
Further, above-mentioned line-net formula electricity dirt separator includes cathode line and line-net formula positive plate, the line-net formula anode
Plate includes some silk screen layers, and the line-net formula electricity dirt separator is connect in high pressure, high frequency, pulse, plasma, direct current, variable-frequency power sources
Any one.
The present invention is advantageous in that：Flue gas multiple pollutant minimum discharge ammonia process DDC techniques of the invention and device, root
Ammonium bisulfite, ammonification regeneration generation absorbent ammonium sulfite, and ammonium sulfite are generated according to ammonium sulfite sulfur dioxide absorption
The characteristic of oxidation generation stabilization ammonium sulfate, zoning design is carried out by tower body, and gas cap is risen by band vortex-flow and defrosting by three
Column plate realize it is mutually isolated, by absorption tower be divided into enriching section, absorber portion and purifying and dedusting demisting section；It is and outer by pump, pipeline
The oxidation trough ammonification surge tank and washing tank in portion form three independent circulation loops.Technological process of the invention is short, device fortune
Row stabilization, oxidation efficiency is high, it is ensured that sulfite oxidation rate is up to more than 98%, effectively reduces the liquid level and air blower of oxidation trough
Pressure head, reduce investment outlay and operating cost；The flue dust Washing ratio of absorber portion realizes minimum discharge 85 ~ 90% or so；Outlet is net
The clearance of flue gas droplet is up to 99%, while ensuring outlet droplet content≤20mg/Nm3.
The covering device design science, characteristics of compact layout, desulfurization dust-removing efficiency is high, has prevented flue gas hangover falling phenomenon.Flue gas
Outlet SO2＜ 35mg/Nm3, particulate matter ＜ 5mg/Nm3, realize minimum discharge, operation steady in a long-term, with very strong practicality
And wide applicability.
Brief description of the drawings
Fig. 1 is the structural representation of flue gas multiple pollutant minimum discharge ammonia process DDC devices of the invention.
Fig. 2 is the perspective view of the structural representation that vortex-flow and defrosting of the invention rises gas cap.
Fig. 3 is the upward view of the structural representation that vortex-flow and defrosting of the invention rises gas cap.
Fig. 4 is the structural representation of line of the invention-net formula electricity dirt separator.
The implication marked in accompanying drawing is as follows：1st, enriching section, 2, absorber portion, 3, purifying and dedusting demisting section, 4, vortex-flow and defrosting liter
Gas cap, 5, sulphur ammonium pump, 6, slosh pump, 7, concentrating pump, 8, absorption pump, 9, washing pump, 10, oxidation trough, 11, ammonification surge tank, 12,
Water washing tank, 13, spray thrower, 14, demister, 15, adsorption layer, 16, line-net formula electricity dirt separator, 17, bubble cutter, 18, aeration
Device, 19, cylinder, 20, gas outlet, 21, baffle plate, 22, swirl vane, 23, cathode line, 24, positive plate, 25, power supply.
Specific embodiment
Make specific introduction to the present invention below in conjunction with the drawings and specific embodiments.
The spiral-flow type aerator 18 that the present invention is used, purchases from water conservancy project plastics Co., Ltd of Yixing City strange U.S..
The reaction of flue gas multiple pollutant minimum discharge ammonia process DDC techniques of the invention is mainly：
(NH4)2SO3 + H2SO3 = 2NH4HSO3 + H2O （1）
NH4HSO3+ NH3·H2O=(NH4)2SO3+ H2O （2）
Ammonium sulfite sulfur dioxide absorption generates ammonium bisulfite, ammonium bisulfite ammonification generation absorbent ammonium sulfite.
Ammonia process of desulfurization product is ammonium sulfate, and ammonium sulfate is sta-salt, does not possess sulfur dioxide absorption ability, in order to ensure height
The sulfite oxidation rate and absorption rate of sulfur dioxide of effect, oxidation, absorption technique pass through the oxidation trough 10 set up and ammonification is buffered
Tank 11 is separated.
The core of flue gas multiple pollutant minimum discharge ammonia process DDC devices of the invention is tower body, according to the spy of the ammonia process of desulfurization
Property, zoning design is carried out to tower body, according to the flow direction of flue gas multiple pollutant, it is divided into enriching section 1, absorber portion 2 and purifying and dedusting and removes
Mist section 3, three functional areas are mutually isolated by column plate, and rising gas cap 4 by the vortex-flow and defrosting being arranged on column plate is interconnected.
Vortex-flow and defrosting rises gas cap 4 cylinder 19 of baffle plate 21 for top, and top side portion has in gas outlet 20, cylinder 19 and has some
The swirl vane 22 of distribution is circularized, the shape of cylinder 19 may be configured as circular, square, rectangle, polygon etc. according to demand.
Column plate rises gas cap 4 and acts synergistically with vortex-flow and defrosting, plays a part of catch tray.
Three functional areas form three independent circulation loops respectively by pump, pipeline with external add-in groove tank.
Flue gas enters absorption tower enriching section 1 by flue, with the ammonium sulfate concentration slurries gas by the circulated sprinkling of concentrating pump 7
Liquid is contacted, and the moisture in slurries is continuously available evaporation, falls into bottom of towe concentration stock tank, and ammonium sulfate concentration of slurry is further improved, entered
And separate out crystal；Ammonium sulfate slurry solid content with crystal reaches 5% and is transported to after-treatment system above by sulphur ammonium pump 5, specifically
Flow enters hydrocyclone for slurries, is separated by waterpower, and overflow solution is returned and absorbs tower bottom, hydrocyclone underflow slurry
Liquid solid content falls into horizontal two stage piston material pushing centrifugal machine 40 ~ 55%, the ammonium sulfate wet feed water content after being centrifuged at a high speed
2 ~ 5% or so, vibrations fluid bed dryer is transported to by conveying worm, is dried to the sulfuric acid ammonium product of water content ＜ 1%,
It is packaged into outside finished product by packing machine and is sold.
After flue gas and ammonium sulfate slurries heat exchange, a large amount of trickle ammonium salts and droplet have been carried in temperature reduction secretly in uphill process
Particle；The flue gas of a large amount of ammonium salts and droplet is carried secretly, at a high speed by a liter gas cap, has been clashed into spiral-plate leaf, the ammonium salt of entrainment, mist
Drop is retained by blade, and big drop is condensed under the influence of centrifugal force, due to Action of Gravity Field, is fallen into concentration stock tank.
Flue gas rises through vortex-flow and defrosting and rises gas cap 4 into absorber portion 2, in eddy flow fluidised form, reaches and absorbs spraying layer, spray
It is several layer by layer to be designed according to amount of sulfur contenting in smoke.After sulfur dioxide absorption, absorber portion 2 flow automatically and under absorbing liquid be partly into ammonification
Surge tank 11, by the absorption pump 8 that is connected with ammonification surge tank 11 in the circulated sprinkling of absorber portion 2；Another part enters oxidation trough
10, oxidation trough 10 is provided with the overfall for connecing enriching section 1.
One characteristic of ammonium sulfite is unstable, is easily decomposed after being heated, resolved at 60 DEG C sulfur dioxide, ammonia,
Water, it is therefore necessary to which initial oxidation is concentrated again.
Oxidation trough 10 passes through pipeline to bottom air-blowing from air blower, and bottom is provided with air distribution pipe net, is connected on branch pipe
Spiral-flow type aerator 18, the aerator 18 has that corrosion-resistant, coefficient of oxygen utilization is high, do not block, it is easy for installation the features such as.Air from
Spiral-flow type aerator 18 is spouting to form numerous micro-bubble, and minute bubbles are got in uphill process by the pressure of solution
Come smaller, minute bubbles volume becomes larger, by the MLV cutter 17 set in oxidation trough 10（Bubble cutter 17 is
Corrosion-resistant material, into lattice-shaped, 0.5 ~ 0.7mm of string diameter, 50 ~ 200mm of thickness）.Bubble cutter 17 plays secondary cut bubble
And increasing bubble, increase bubble surface area extends bubble and solution time of contact, oxidation efficiency is improved, while playing removal simultaneously
The effect of foam.
According to actually used demand, bubble cutter 17 can select the dress that porous plate or filler etc. play cutting bubble
Put.
Oxidation trough 10 completes the ammonium sulfate of oxidation, and a part overflows to the concentration stock tank of the bottom of enriching section 1, another portion
Divide and the upper strata spraying layer of enriching section 1 is transported to by circulating pump branch road.The continuous circulation that the slurries of the stock tank bottom of enriching section 1 pass through pump
With flue gas heat transfer, ammonia sulfate crystal is separated out, in order to prevent ammonia sulfate crystal in bottom of towe deposit clumps, agitation is provided with outside tower
Pump 6, the outlet conduit of slosh pump 6 connection venturi-type eductors, formation negative pressure at venturi-type eductors trunnion, inspiration large quantity of air,
While playing disturbance slurries, the oxidation air that collaboration enters from oxidation air distribution pipe network carries out two to the ammonium sulfite for remaining
Secondary oxidation.
The set oxidation technology, it is ensured that sulfite oxidation rate is up to more than 98%, and the liquid level of oxidation trough 10 is effectively reduced, drum
The pressure head of blower fan is effectively reduced, and is reduced investment outlay and operating cost.
The lower section of column plate is provided with the upward rinse spray device 13 of spout, periodic flushing liter between enriching section 1, absorber portion 2
Gas cap.The dry and wet interface of enriching section 1 has ammonium salt and separates out crystallization, therefore sets the smooth PP plates of a circle in the inwall of enriching section 1,
The spraying layer circumferential nozzle of enriching section 1 selects wide-angle nozzle, allows slurries directly to spray onto PP plates, prevents ammonium salt crystallization wall built-up.Spray
Liquid is drenched to be provided by the absorption pump 8 being connected with oxidation trough 10, ammonification surge tank 11 respectively.
The top of absorber portion 2, is provided with some preliminary clearning demisters 14, and the bottom of demister 14 is provided with the upward spray thrower of spout
13, the droplet of removing smoke secondary entrainment, spray liquid is preferably process water.
Flue gas rises the self-absorption of gas cap 4 section 2 and enters purifying and dedusting demisting section 3 through the vortex-flow and defrosting on column plate, reaches washing layer,
Washing layer is made up of the filling adsorption layer 15 for being arranged on the bottom of spray thrower 13, and spray liquid is water, utilizes water to absorb flue gas entrainment
Ammonium salt, droplet.The cleaning solution of washing layer discharge enters water washing tank 12, by washing pump 9 in absorption scrubber layer circulated sprinkling.
According to the actual requirements, some groups of washing layers of circulated sprinkling can be set；By band vortex-flow and defrosting liter between washing layer
The column plate cut-off of gas cap 4.
The top of purifying and dedusting demisting section 3 sets line-net formula electricity dirt separator 16, further removes droplet, fine particle.Line-
Net formula electricity dirt separator 16 includes the cathode line 23 and the line-net formula positive plate 24 that are mutually matched, and positive plate 24 includes some silk screen layers,
Line-net formula electricity dirt separator 16 is powered by any one power supply 25 in high pressure, high frequency, pulse, plasma, direct current, frequency conversion.
Positive plate 24 arranges that cathod system is arranged in the bottom of novel anode plate 24 perpendicular to airflow direction；Flue gas flow through line-
The electrostatic precipitation of net formula electricity dirt separator 16（Mist）During region, the direction of the electric field force that dust and droplet are subject to and air inducing power is same
On vertical curve, make dust and droplet particle under the collective effect of air inducing power and electric field force, trapping is completed on positive plate 24.Powder
Dirt and droplet are contacted and are attached on novel anode plate 24, and due to using line-net formula positive plate 24, little particle is online-and net is internal
Constantly collide and gradually become bulky grain, finally flow in absorption tower under gravity, it is to avoid be attached on positive plate 24
Drop is because of the reentrainment of flue gas flow rate.Droplet clearance is up to 99%, it is ensured that exhanst gas outlet droplet content≤20mg/Nm3.
The covering device design science, characteristics of compact layout has the flue gas multiple pollutant minimum discharge ammonia process for covering the technique more at present
DDC devices put into operation, and desulfurization dust-removing efficiency is high, have prevented flue gas hangover falling phenomenon.Exhanst gas outlet SO2＜ 35mg/Nm3, particle
Thing ＜ 5mg/Nm3, realize minimum discharge, operation steady in a long-term, obtain the highly recognition of numerous clients.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent or equivalent transformation
Technical scheme, all falls within protection scope of the present invention.
Claims (13)
1. flue gas multiple pollutant minimum discharge ammonia process DDC techniques, it is characterised in that flue gas sequentially passes through following steps, Cheng Jingyan
Discharged after gas；
S1, enriching section, after ammonium sulfate spray flue gas, produce fog and concentrate；
S2, absorber portion, ammonium sulfite solution spray fog, absorb the SO in fog2Afterwards, desulfurization fog and absorbing liquid are produced；
S3, purifying and dedusting demisting section, after desulfurization fog is through washing, electricity decontamination, produce neat stress and cleaning solution；
The concentrated pump of concentrate in the step S1 is sprayed in enriching section interior circulation；
The ammonium sulfite that absorbing liquid in the step S2 regenerates after mixing with ammoniacal liquor, sprays through absorption pump in absorber portion interior circulation
Drench；
Cleaning solution in the step S3 is sprayed through washing pump in purifying and dedusting demisting section interior circulation；
After absorbing liquid and oxidation air mixed oxidization in the step S2, the ammonium sulfate of generation imports the concentrate of step S1
In.
2. flue gas multiple pollutant minimum discharge ammonia process DDC techniques according to claim 1, it is characterised in that the electricity is removed
Dirt is to remove droplet, fine particle by line-net formula electricity dirt separator, and the line-net formula electricity dirt separator includes cathode line and line-net
Formula positive plate.
3. flue gas multiple pollutant minimum discharge ammonia process DDC techniques according to claim 1, it is characterised in that the step
Desulfurization fog in S2 by after pre- washing and pre- demisting, into purifying and dedusting demisting section.
4. flue gas multiple pollutant minimum discharge ammonia process DDC techniques according to claim 1, it is characterised in that the absorption
After liquid mixes with oxidation air, sprayed in enriching section and/or absorber portion through absorption pump.
5. the device of any flue gas multiple pollutant minimum discharge ammonia process DDC techniques of claim 1-4 is applicable, and its feature exists
Enter in, flue gas multiple pollutant self-absorption tower entrance, concentrated section successively, absorber portion, purifying and dedusting demisting section, into after neat stress
From tower top outlet discharge；
The enriching section, absorber portion and purifying and dedusting demisting section, the column plate for rising gas cap by some vortex-flow and defrostings of band separate；
Be respectively equipped with some spray throwers in the enriching section, absorber portion and purifying and dedusting demisting section, spray liquid be respectively ammonium sulfate,
Ammonium sulfite and water；The section outlet of purifying and dedusting demisting is provided with line-net formula electricity dirt separator；
The concentrated pump circulation of concentrate of the enriching section discharge is sprayed in enriching section；
The absorbing liquid of the absorber portion discharge separately flows into ammonification surge tank, is being inhaled by buffering tank connected absorption pump with ammonification
Receive section interior circulation spray；With inflow oxidation trough, aoxidize trench bottom and be provided with oxidation air distributor pipe, cell wall is provided with and connects overflowing for enriching section
Outlet；
After the cleaning solution of the purifying and dedusting demisting section discharge enters water washing tank, followed in purifying and dedusting demisting section by washing pump
Ring spray is drenched.
6. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the concentration
Section top is provided with the spray thrower of some opening upwards, and the spray thrower is connected by absorption pump with oxidation trough.
7. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the absorption
The top of section is provided with some demisters, and the bottom of the demister is provided with spout upward spraying device, and spray liquid is process water.
8. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the purification
Spray thrower in dedusting demisting section constitutes some washing layers, by the tower with some vortex-flow and defrostings liter gas cap between the washing layer
Plate separates, and after the cleaning solution of washing layer discharge enters water washing tank, is sprayed in washing layer interior circulation by washing pump.
9. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the line-net
Formula electricity dirt separator bottom is provided with the upward spray thrower of some spouts, and spray liquid is process water.
10. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the concentration
Section is provided with the slosh pump that outlet conduit connects venturi-type eductors, and bottom is provided with oxidation air distribution pipe network.
11. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the eddy flow
Demisting rises gas cap and the cylinder of baffle plate is provided with including top, and cylinder top side portion is provided with gas outlet, and some circularize point is provided with cylinder
The swirl vane of cloth.
12. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the oxidation
If being provided with dried layer bubble cutter in groove, the oxidation air distributor pipe for being provided with some aerators is arranged on the bottom of bubble cutter
Portion, the bubble cutter is any one in grid, porous plate or filler.
13. flue gas multiple pollutant minimum discharge ammonia process DDC devices according to claim 5, it is characterised in that the line-
Net formula electricity dirt separator include cathode line and line-net formula positive plate, the line-net formula positive plate include some silk screen layers, the line-
Net formula electricity dirt separator connects any one in high pressure, high frequency, pulse, plasma, direct current, variable-frequency power sources.
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|---|---|---|---|
| CN201710176793.6A CN106925090A (en) | 2017-03-23 | 2017-03-23 | Flue gas multiple pollutant minimum discharge ammonia process DDC techniques and device |
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| CN201710176793.6A CN106925090A (en) | 2017-03-23 | 2017-03-23 | Flue gas multiple pollutant minimum discharge ammonia process DDC techniques and device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176768A (en) * | 2017-07-20 | 2017-09-19 | 贵州大学 | Utilize the method and device of vertical stream process sanitary sewage |
| CN107321146A (en) * | 2017-08-18 | 2017-11-07 | 江苏科行环保科技有限公司 | A kind of high cloud of dust desulfurization double tower double-cycle process and device |
| CN108421396A (en) * | 2018-05-17 | 2018-08-21 | 大连铭晟环保设备有限公司 | Desulphurization denitration dust pelletizing system and desulphurization denitration dust collecting process |
| CN109316938A (en) * | 2018-11-15 | 2019-02-12 | 湖北双环科技股份有限公司 | Process of desulfurization for boiler flue gas system |
| CN109351153A (en) * | 2018-11-15 | 2019-02-19 | 湖北双环科技股份有限公司 | Desulfation dust-extraction device suitable for ammonia desulfurizing process |
| CN110193280A (en) * | 2019-04-16 | 2019-09-03 | 湖北双环科技股份有限公司 | The industrial dust removal integrated system of the ammonia process of desulfurization |
| CN110201508A (en) * | 2019-05-09 | 2019-09-06 | 山东明晟化工工程有限公司 | A kind of the escaping of ammonia and ammonia process of desulfurization aerosol combination treatment method |
| CN112403246A (en) * | 2020-12-16 | 2021-02-26 | 北京国电龙源环保工程有限公司 | Efficient ammonia desulphurization and dust removal device and application method thereof |
| CN112569752A (en) * | 2020-12-16 | 2021-03-30 | 昆岳互联环境技术(江苏)有限公司 | High-efficiency energy-saving ammonia-process desulfurization ultralow emission device and method |
| CN112705025A (en) * | 2020-12-29 | 2021-04-27 | 石家庄天人化工设备集团有限公司 | Energy-saving ammonia desulphurization device with ultralow emission and desulphurization process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176768A (en) * | 2017-07-20 | 2017-09-19 | 贵州大学 | Utilize the method and device of vertical stream process sanitary sewage |
| CN107176768B (en) * | 2017-07-20 | 2023-07-04 | 贵州大学 | Method and device for treating domestic sewage by using vertical flow |
| CN107321146A (en) * | 2017-08-18 | 2017-11-07 | 江苏科行环保科技有限公司 | A kind of high cloud of dust desulfurization double tower double-cycle process and device |
| CN108421396A (en) * | 2018-05-17 | 2018-08-21 | 大连铭晟环保设备有限公司 | Desulphurization denitration dust pelletizing system and desulphurization denitration dust collecting process |
| CN109316938A (en) * | 2018-11-15 | 2019-02-12 | 湖北双环科技股份有限公司 | Process of desulfurization for boiler flue gas system |
| CN109351153A (en) * | 2018-11-15 | 2019-02-19 | 湖北双环科技股份有限公司 | Desulfation dust-extraction device suitable for ammonia desulfurizing process |
| CN110193280A (en) * | 2019-04-16 | 2019-09-03 | 湖北双环科技股份有限公司 | The industrial dust removal integrated system of the ammonia process of desulfurization |
| CN110201508A (en) * | 2019-05-09 | 2019-09-06 | 山东明晟化工工程有限公司 | A kind of the escaping of ammonia and ammonia process of desulfurization aerosol combination treatment method |
| CN112403246A (en) * | 2020-12-16 | 2021-02-26 | 北京国电龙源环保工程有限公司 | Efficient ammonia desulphurization and dust removal device and application method thereof |
| CN112569752A (en) * | 2020-12-16 | 2021-03-30 | 昆岳互联环境技术(江苏)有限公司 | High-efficiency energy-saving ammonia-process desulfurization ultralow emission device and method |
| CN112705025A (en) * | 2020-12-29 | 2021-04-27 | 石家庄天人化工设备集团有限公司 | Energy-saving ammonia desulphurization device with ultralow emission and desulphurization process |
| CN115193234A (en) * | 2022-07-28 | 2022-10-18 | 上海协微环境科技有限公司 | NO remover and semiconductor tail gas treatment equipment |
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