CN108479369A - A kind of ultra-clean discharge ammonia desulfuration equipment and technique - Google Patents
A kind of ultra-clean discharge ammonia desulfuration equipment and technique Download PDFInfo
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- CN108479369A CN108479369A CN201810371351.1A CN201810371351A CN108479369A CN 108479369 A CN108479369 A CN 108479369A CN 201810371351 A CN201810371351 A CN 201810371351A CN 108479369 A CN108479369 A CN 108479369A
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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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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Abstract
The present invention is a kind of ultra-clean discharge ammonia desulfuration equipment and technique.Apparatus of the present invention include sequentially connected prewashing tower, absorption tower and adsorption tower, it is provided with smoke inlet at the top of the prewashing tower, the side wall of the prewashing tower is connect with the side wall on the absorption tower by exhaust gases passes, the top on the absorption tower is connected with the top of the adsorption tower by flue, the side wall of the adsorption tower is provided with exhanst gas outlet, and the adsorption tower is provided with activated carbon adsorption layer along smoke movement direction.Flue gas is handled using the present apparatus, by the measure of multiple spray, demisting, dedusting, and in the processing for finally increasing activated carbon adsorption, effectively improve the efficiency of desulfurization, dedusting, especially activated carbon adsorption layer, smoke pipe can be effectively treated to export to form " blue smoke " or " tobacco " aerosol, the ultra-clean discharge of desulfurizer smoke pipe outlet dust concentration can be met.
Description
Technical field
The invention belongs to filed of flue gas purification, more particularly to a kind of ultra-clean discharge ammonia desulfuration equipment and technique.
Background technology
The one kind of the ammonia process of desulfurization as high efficiency wet desulfurizing process, China promote and apply accounted for surely a seat it
Ground.Ammonia process is absorption method, and the extensive ammonia source in China can be made full use of to produce sulfur fertilizer, makes up lacking for a large amount of imported sulphurs in China
Mouthful, the pollution of sulfur dioxide not only being administered, but also meet long-term a large amount of Fertilizer demand, the country has carried out constantly research and development and has promoted,
And novel ammonia desulfurizing process is released successively.But ammonia flue gas desulfurization technique is in actual moving process, existing desulfurization dress
It sets and realizes desulfurization by the way that ammonia is excessively added so that aerosol concentration is high in flue gas, and ammonia damage is high, trails the problems such as serious, often goes out
The phenomenon that existing ammonium sulfate is escaped with exiting flue gas, the escape of ammonium sulfate not only causes secondary pollution to environment, but also affects
The economic benefit of desulfurizer, meanwhile, smoke pipe exports to form " blue smoke " or " tobacco " aerosol, has seriously affected manufacturing enterprise
Environmental image.Therefore, with the continuous improvement of environmental requirement, existing desulfurizer, which cannot meet tightened up production, to be wanted
It asks.
In view of the above-mentioned problems, the prior art also develops novel production technology.CN103566720B discloses a kind of ammonia
Method flue gas desulfurization device specifically discloses the chimney including discharging neat stress, one group is installed in the chimney in neat stress exit
The aerosol processing unit of pipe and the liquid trap composition of axially disposed lateral opening hole, the pipe of one group of lateral opening hole,
Bore is 6mm~25mm, and the high 1m~20m of pipe, the coating that inside pipe wall coating is made of porous material, coating layer thickness is in caliber
10%~70%, the aperture of coating is 1~10um, and side hole area is the 5%~30% of pipe sidewall area.The technical solution
By the way that the pipe of one group of lateral opening hole is arranged in the chimney that ammonia desulfuration equipment discharges neat stress, flue gas is occupied in chimney
Free air space keeps the turbulence of flow of flue gas stronger, is conducive to the collision in flue gas between aerosol particle, grows up.Gas is molten
Glue particle enters in pipe, by the porous material absorption in pipe, to achieve the purpose that remove aerosol in flue gas.However, although
The aerosol generated in technical solution processing ammonia type flue gas desulfurizing apparatus operational process, significantly reduces flue gas desulfurization device sulphur
Sour ammonium is with the escape of aerosol form, but sorbing material is easy consumption, needs to overhaul after a period of use, and use is not square
Just, it takes time and effort.
CN104338426B discloses a kind of method and its special absorptive tower of control ammonia process of desulfurization aerosol discharge, specifically
The desulfurization zone that the flue gas that 100~120 DEG C are cooled to through atomized water spraying cooling is passed through to desulfuration absorbing tower is disclosed, in desulfurization zone
In flue gas from bottom to top and the doctor solution counter current contacting that sprays from top to bottom to absorb the SO in flue gas2, it is arranged in desulfurization zone
Filler or sieve plate；Flue gas enters padding washing area, the coarseness gas generated in the injection washings removing ammonia process of desulfurization after desulfurization
Colloidal sol；Flue gas enters steam phase change zone after desulfurization and removing coarseness aerosol, injects steam from steam phase change zone middle part, builds
Supersaturated vapor environment needed for vertical steam phase transformation makes the fine granularity aerosol particles not removed condensation growth occur and by steam
The mesh mist eliminator of phase change zone smoke outlet removes；Purifying smoke is arranged by the exhanst gas outlet at the top of desulfuration absorbing tower through chimney
It puts.The technical solution utilizes aerosol formation mechenism, physicochemical characteristic and ammonia desulfurizing process feature, can effectively reduce because of doctor solution
The aerosol particles quantity that droplet evaporation is precipitated, but application scenarios more limit to, efficiency of dust collection is not high, it is difficult to large-scale promotion
Using.
To sum up, the prior art still lacks a kind of easy to use, desulfurization and high dust collection efficiency and the abundant ammonia process of application scenarios
Sulfur removal technology.
Invention content
Present invention has been made in view of the above problems so that the technological process of desulfurizer is further perfect, realizes
Ultra-clean discharge may be implemented in high efficiency desulfurization and dedusting.
It is an object of the invention to disclose a kind of ultra-clean discharge ammonia desulfuration equipment, for achieving the above object,
The technical solution adopted by the present invention is as follows.
A kind of ultra-clean discharge ammonia desulfuration equipment, including sequentially connected prewashing tower, absorption tower and adsorption tower, it is described pre-
It washes and is provided with smoke inlet at the top of tower, the side wall of the prewashing tower is connect with the side wall on the absorption tower by exhaust gases passes,
The top on the absorption tower is connected with the top of the adsorption tower by flue, and the side wall of the adsorption tower is provided with flue gas
Outlet, which is characterized in that the adsorption tower is provided with activated carbon adsorption layer along smoke movement direction.
The present invention passes through the measure of multiple spray, demisting, dedusting, and in the processing for finally increasing activated carbon adsorption, has
Improve the efficiency of desulfurization, dedusting in effect ground.Especially activated carbon adsorption layer, can be effectively treated smoke pipe export to be formed " blue smoke " or
" tobacco " aerosol.
Preferably, the activated carbon adsorption layer includes activated carbon charcoal bed and activated carbon, the activated carbon charcoal bed is fixed
Back washing device is provided below in formula overlapping bed, the activated carbon charcoal bed.The activated carbon adsorption layer of the present invention can replace use, add
Entering back washing device can easy to clean and replacement.
Preferably, the inside of the prewashing tower is disposed with aerosol cohesion washing layer, injection along smoke movement direction
It water (flow) direction the first prewashing tower slurries spraying layer directed downwardly, injection water direction the second prewashing tower slurries spraying layer upward and penetrates
The third prewashing tower slurries spraying layer of water (flow) direction upward, the absorption tower is disposed with injection water along smoke movement direction
Second absorption tower slurries spraying layer, the water scrubber that the first absorption tower slurries spraying layer for being directed downward, injection water are directed downward
The second absorption tower water that the first absorption tower water spray layer that disk, packing layer, injection water are directed downward, injection water are directed downward
Spraying layer and wet electrical dust precipitator.
The aerosol cohesion washing layer is provided with several atomizing lances, and the atomizing lance is arranged in the flue gas air inlet
Around mouthful；The atomizing lance is connect with compressed air, technique water atomization plant；The prewashing top of tower is provided with closed gas
Cover, the smoke air inlet and the atomizing lance are located in the closed air hood, the spraying granule formed after spray gun
Particle size is best, and mass-and heat-transfer effect can be preferably carried out between flue gas, reduces flue-gas temperature, accelerates aerosol particle object and exists
It is condensed on water mist particle.The slurries are the akaline liquids such as ammonium hydroxide, and the acidic materials in flue gas can be effectively treated.The washing
Tower tray is eddy flow gas cap tower tray.Described filler layer is ceramic packing.Two layers washing spray, ceramic packing, eddy flow gas cap tower tray group
At absorption tower wash layer, realize low concentration clear water three-level circulating water wash.The ammonia and ammonium sulfate of flue gas entrainment are washed,
Flue gas entrainment, water washing device and packing layer can be substantially reduced, desulphurizing ability is improved, reduces the generation of aerosol, reinforcing pair
The trapping and washing of subtle aerosol increase grain size, promote the removal efficiency to aerosol.The absorption tower washing layer and cycle
Water pump is adjacent, and cycle washing may be implemented.Refer to a kind of water washing device of high efficiency removing aerosol of patent
(CN206343056U)。
Preferably, the exhaust gases passes are internally provided with atomizing lance.The grain of the spraying granule formed after spray gun
Diameter size is best, and mass-and heat-transfer effect can be preferably carried out between flue gas, reduces flue-gas temperature, accelerates aerosol particle object in water
It is condensed in fog particles, improves demisting efficiency, these bulky grains removal effect in the electrostatic precipitator of back segment is preferable.
Preferably, being provided with water fender in the top prewashing tower internal side wall of the exhaust gases passes.It is described
Water fender one end be perpendicularly fixed at the prewashing tower level is prolonged on the top inner wall of tower of the exhaust gases passes and into tower
Bending is folded down after stretching, the flow above prewashing tower gas outlet is guided to be converged to centre, and other end connection supporting beam passes through
Supporting beam is fixed on inside the prewashing tower, can stop that sprayed slurry is emitted directly toward flue or by slurries caused by wall stream
Overcurrent, to reduce absorption tower concentration of slurry.
Preferably, the aerosol cohesion washing layer is provided with several atomizing lances, the atomizing lance is arranged in institute
It states around smoke air inlet；The atomizing lance is connect with compressed air, technique water atomization plant.
Preferably, the prewashing tower and the absorb the bottom of the tower are provided with microvesicle distributor.The microvesicle distributor, will
For the air of dispersion from bottom of tower upwards through the uplink in continuous phase slurries in the form of bubbles, the oxygen in air dissolves in liquid phase and and slurries
Reaction, bubble uplink have stirring action to slurries.
Preferably, the wet electrical dust precipitator includes the cellular electroconductive frp anode tube of regular hexagon, the electric discharge of titanium pole
Line and high-voltage pulse electric source device, the output end connection titanium pole discharge lines of high-voltage pulse electric source device, the high-voltage pulse power source
For the high voltage power supply that base laminated adds pulse voltage integrated, titanium pole discharge lines are located at the center of anode tube.The wet type electricity removes
Dirt device can provide the corona discharge power more several times greater than electric precipitator, to particle (such as fine dust, metallic particles, the SO3 of submicron order
Acid mist, drop etc.) also there is very strong trapping ability.Wet electrical dust precipitator uses high frequency electric source or the pulse power, and in electric precipitation
Increase the pre- demisting of high-ratio surface filler before device, improves air flow method.Wet electrical dust precipitator makes gas ionization wink by corona discharge
Between generate a large amount of electronics, ion, and including O and O3On the one hand active group inside can make the particle lotus in flue gas
Electricity makees directed movement under the action of electric field force to dust collector pole, reaches trapping purpose；Another aspect active group can effectively promote
Into the oxidation for remaining HgO in flue gas, make it easy to be formed HgP or water-soluble species and charged in the electric field, in the work of electric field force
Make directed movement to dust collecting pole plate with lower, finally into being removed in the liquid film on people's dust collecting pole plate.The wet-esp
Device can neatly adjust corona discharge power according to operating mode, greatly improve trapping ability of the end to residual contaminants, effectively control control
Make residual ammonia effusion, ammonium salt entrainment, aerosol discharge and mercury emissions.Refer to a kind of new and effective wet type based on the pulse power of patent
Electric precipitator (205887177 U of CN).
Another object of the present invention is to disclose a kind of ultra-clean discharge ammonia desulfurizing process, including following processing step：
1) flue gas enters the aerosol cohesion washing layer of the prewashing tower from the smoke inlet, will be clear with the atomizing lance
The clear water droplet that water and pressure-air mixed aerosol are formed carries out rapid mass transfer heat transfer；
2) flue gas handled by the step (1) is sprayed by the first prewashing tower slurries spraying layer, the second prewashing tower slurries
Drenching layer and third prewashing tower slurries spraying layer carry out cycle washing for the first time；
3) lower part of the flue gas handled by the step (2) by the exhaust gases passes into the absorption tower, and
Progress mass-and heat-transfer effect is carried out in exhaust gases passes with the atomizing lance, reduces flue-gas temperature；
4) enter the first absorption tower slurries spraying layer by the flue gas that the step (3) is handled and second absorption tower slurries spray
Drenching layer carries out second of cycle washing；
5) by the step (4) handle flue gas by water scrubber disc layer, packing layer, the first absorption tower water spray layer and
Second absorption tower water spray layer carries out clear water three-level circulating water wash；
6) flue gas handled by the step (5) is captured and is detached in the flue gas by the wet electrical dust precipitator
Submicron particles；
7) flue described in the flue gas handled by the step (6) enters the top of the adsorption tower, by described
Activated carbon adsorption layer carries out activated carbon adsorption；
8) flue gas handled by the step (7) is discharged by exhanst gas outlet.
Preferably, also step (9) microvesicle is used to aoxidize, the step (9) is located at step (1) later before step (2)；
The microvesicle oxidation technology is by the microvesicle distributor in the prewashing tower and the absorb the bottom of the tower is arranged, will disperse
Air from bottom of tower upwards through the uplink in continuous phase slurries in the form of bubbles, the oxygen in air dissolves in liquid phase and anti-with slurries
It answers, bubble uplink has stirring action to slurries.
Compared with the existing technology, the present invention achieves beneficial technique effect：
1. a kind of efficient ammonia desulfuration equipment is provided, by the measure of multiple spray, demisting, dedusting, and last
The processing for increasing activated carbon adsorption effectively improves the efficiency of desulfurization, dedusting, especially activated carbon adsorption layer, can be effective
Processing smoke pipe exports to form " blue smoke " or " tobacco " aerosol, can meet the ultra-clean row of desulfurizer smoke pipe outlet dust concentration
It puts.
2. prewashing tower slurries spraying layer and absorption tower slurries spraying layer wash twice, wet method fume desulfurizing system is increased
Liquid-gas ratio increases gas-liquid mixed and mass transfer intensity in prewashing tower and absorbing tower, is conducive to the SO of raising system2Absorb effect
The removal efficiency of rate, demercuration efficiency and aerosol；
3. water fender can reduce the carrying amount that prewashing tower spray liquid enters absorption tower, holding absorption tower is molten with prewashing tower
Liquid concentration difference after wet method fume desulfurizing system absorbs the pollutant in flue gas, then is combined high-efficient wet-type electric precipitator
Advanced treating is carried out to residual contaminants, it being capable of desulfuration demercuration to the maximum extent；
5. technique setting is reasonable, the utilization ratio of device can not only be improved, and reduce the complexity of technique.
Description of the drawings
Fig. 1 is the process flow diagram for indicating the present apparatus.
Reference sign：
Prewashing tower 1, absorption tower 2, adsorption tower 3, smoke inlet 4, aerosol cohesion washing layer 5, the first prewashing tower slurries spray
The 6, second prewashing tower slurries spraying layer 7 of layer, third prewashing tower slurries spraying layer 8, exhaust gases passes 9, atomizing lance 10, first absorb
Tower slurries spraying layer 11, second absorption tower slurries spraying layer 12, washing tower tray 13, packing layer 14, the first absorption tower water spray layer
15, second absorption tower water spray layer 16, wet electrical dust precipitator 17, flue 18, activated carbon adsorption layer 19, exhanst gas outlet 20,
Water fender 21, microvesicle distributor 22.
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
A kind of ultra-clean shown in FIG. 1 discharges ammonia desulfuration equipment, including sequentially connected prewashing tower 1, absorption tower 2 and suction
Attached tower 3 is provided with smoke inlet 4 at the top of the prewashing tower, and the inside of the prewashing tower 1 is set gradually along smoke movement direction
There are the first prewashing tower slurries spraying layer 6 that aerosol cohesion washing layer 5, injection water be directed downward, injection water direction upward
Second prewashing tower slurries spraying layer 7 and penetrate the third prewashing tower slurries spraying layer 8 of water (flow) direction upward, the side of the prewashing tower 1
Wall is connect with the side wall on the absorption tower 2 by exhaust gases passes 9, and the absorption tower 2 is disposed with spray along smoke movement direction
The second absorption tower slurries spraying layer that the first absorption tower slurries spraying layer 11 that jetting stream is directed downward, injection water are directed downward
12, the first absorption tower water spray layer 15, the injection water direction court that tower tray 13, packing layer 14, injection water are directed downward are washed
Under second absorption tower water spray layer 16 and wet electrical dust precipitator 17, the top at the top on the absorption tower 2 and the adsorption tower 3
It is connected by flue 18, the adsorption tower 3 is provided with activated carbon adsorption layer 19, the adsorption tower 3 along smoke movement direction
Side wall be provided with exhanst gas outlet 20.The aerosol cohesion washing layer 5 is provided with several atomizing lances, and the atomizing lance is set
It sets around the smoke air inlet；The atomizing lance is connect with compressed air, technique water atomization plant.The wet type electricity removes
Dirt device 17 includes the cellular electroconductive frp anode tube of regular hexagon, titanium pole discharge lines and high-voltage pulse electric source device, high-tension pulse
The output end connection titanium pole discharge lines of supply unit are rushed, the high-voltage pulse power source is the high pressure that base laminated adds pulse voltage integrated
Power supply, titanium pole discharge lines are located at the center of anode tube.
As preferred embodiment, the activated carbon adsorption layer 19 includes activated carbon charcoal bed and activated carbon, the activated carbon
Charcoal bed is fixed overlapping bed, and back washing device is provided below in the activated carbon charcoal bed.
Preferably, the exhaust gases passes 9 are internally provided with atomizing lance 10.The spraying granule formed after spray gun
Particle size is best, and mass-and heat-transfer effect can be preferably carried out between flue gas, reduces flue-gas temperature, accelerates aerosol particle object and exists
It is condensed on water mist particle, improves demisting efficiency, these bulky grains removal effect in the electrostatic precipitator of back segment is preferable.
Preferably, being provided with water fender in the internal side wall of the top prewashing tower 1 of the exhaust gases passes 9
21.21 one end of the water fender is perpendicularly fixed on the inner wall of tower of the top of the exhaust gases passes 9 positioned at the prewashing tower 1 and to tower
Bending is folded down after interior horizontal extension, guides the top flow of the prewashing tower 1 to be converged to centre, it is logical that the other end connects supporting beam
It crosses the supporting beam to be fixed on inside the prewashing tower, can stop that sprayed slurry is emitted directly toward flue or causes by wall stream
Slurry overflowing, to reduce absorption tower concentration of slurry.
Preferably, the prewashing tower 1 and 2 bottom of the absorption tower are provided with microvesicle distributor 22.The microvesicle distribution
Device 22, by the air of dispersion from bottom of tower upwards through the uplink in continuous phase slurries in the form of bubbles, the oxygen in air dissolves in liquid phase
And and slurry reaction, bubble uplink is to slurries with stirring action.
A kind of ultra-clean discharge ammonia desulfurizing process, including following processing step：
1) flue gas enters the aerosol cohesion washing layer 5 of the prewashing tower 1 from the smoke inlet 4, with the atomizing lance
The clear water droplet that clear water and pressure-air mixed aerosol are formed is subjected to rapid mass transfer heat transfer；
2) flue gas handled by the step (1) is sprayed by the first prewashing tower slurries spraying layer 6, the second prewashing tower slurries
Drenching layer 7 and third prewashing tower slurries spraying layer 8 carry out cycle washing for the first time；
3) lower part of the flue gas handled by the step (2) by the exhaust gases passes 9 into the absorption tower, and
Progress mass-and heat-transfer effect is carried out in exhaust gases passes 9 with the atomizing lance 10, reduces flue-gas temperature；
4) enter the first absorption tower slurries spraying layer 11 and second absorption tower slurries by the flue gas that the step (3) is handled
Spraying layer 12 carries out second of cycle washing；
5) flue gas handled by the step (4) passes through water scrubber disc layer 13, packing layer 14, the first absorption tower water spray
Layer 15 and second absorption tower water spray layer 16 carry out clear water three-level circulating water wash；
6) flue gas handled by the step (5) is captured and is detached in the flue gas by the wet electrical dust precipitator 17
Submicron particles；
7) flue 18 described in the flue gas handled by the step (6) enters the top of the adsorption tower 3, passes through institute
Activated carbon adsorption layer 19 is stated, activated carbon adsorption is carried out；
8) flue gas handled by the step (7) is discharged by exhanst gas outlet 20.
As preferred embodiment, also step (9) microvesicle is used to aoxidize, the step (9) is located at step after step (1)
(2) before；The microvesicle oxidation technology is by the microvesicle distributor in the prewashing tower and the absorb the bottom of the tower is arranged
22, by the air of dispersion from bottom of tower upwards through the uplink in continuous phase slurries in the form of bubbles, the oxygen in air dissolves in liquid phase simultaneously
With slurry reaction, bubble uplink has stirring action to slurries.
According to the disclosure and teachings of the above specification, those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is changed.Therefore, protection domain is not limited to specific implementation mode disclosed and described above, to power
Some modifications and changes that profit requires should also be as falling within the scope of protection of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (10)
1. a kind of ultra-clean discharges ammonia desulfuration equipment, including sequentially connected prewashing tower, absorption tower and adsorption tower, the prewashing
Smoke inlet is provided at the top of tower, the side wall of the prewashing tower is connect with the side wall on the absorption tower by exhaust gases passes, institute
The top for stating absorption tower is connected with the top of the adsorption tower by flue, and the side wall of the adsorption tower is provided with flue gas and goes out
Mouthful, which is characterized in that the adsorption tower is provided with activated carbon adsorption layer along smoke movement direction.
2. the apparatus according to claim 1, which is characterized in that the activated carbon adsorption layer includes activated carbon charcoal bed and activity
Charcoal, the activated carbon charcoal bed are fixed overlapping beds, and back washing device is provided below in the activated carbon charcoal bed.
3. the apparatus of claim 2, which is characterized in that the inside of the prewashing tower is set successively along smoke movement direction
It is equipped with the first prewashing tower slurries spraying layer that aerosol cohesion washing layer, injection water be directed downward, injection water direction upward
Second prewashing tower slurries spraying layer is transported with the third prewashing tower slurries spraying layer of water (flow) direction upward, the absorption tower is penetrated along flue gas
Dynamic direction is disposed with the first absorption tower slurries spraying layer that injection water is directed downward, second that injection water is directed downward
Absorption tower slurries spraying layer washes the first absorption tower water spray layer, injection water that tower tray, packing layer, injection water are directed downward
The second absorption tower water spray layer and wet electrical dust precipitator that stream is directed downward.
4. device according to claim 3, which is characterized in that the exhaust gases passes are internally provided with atomizing lance.
5. device according to claim 4, which is characterized in that be located inside the top prewashing tower of the exhaust gases passes
Water fender is provided on side wall.
6. device according to claim 3, which is characterized in that the aerosol cohesion washing layer is provided with several atomization sprays
Rifle, the atomizing lance are arranged around the smoke air inlet；The atomizing lance and compressed air, technique water atomization plant
Connection.
7. device according to claim 3, which is characterized in that the prewashing tower and the absorb the bottom of the tower are provided with microvesicle
Distributor.
8. device according to claim 3, which is characterized in that the wet electrical dust precipitator, which includes that regular hexagon is cellular, leads
Electric fiberglass anode tube, titanium pole discharge lines and high-voltage pulse electric source device, the output end connection titanium pole of high-voltage pulse electric source device
Discharge lines, the high-voltage pulse power source are the high voltage power supply that base laminated adds pulse voltage integrated, and titanium pole discharge lines are located at sun
The center of pole pipe.
9. a kind of ultra-clean using claim 1-8 any one of them integrated apparatus discharges ammonia desulfurizing process, special
Sign is, including following processing step：
1) flue gas enters the aerosol cohesion washing layer of the prewashing tower from the smoke inlet, with the atomizing lance by clear water and
The clear water droplet that pressure-air mixed aerosol is formed carries out rapid mass transfer heat transfer；
2) flue gas handled by the step (1) passes through the first prewashing tower slurries spraying layer, the second prewashing tower slurries spraying layer
With third prewashing tower slurries spraying layer, cycle washing for the first time is carried out；
3) flue gas handled by the step (2) enters the lower part on the absorption tower by the exhaust gases passes, and in flue gas
Progress mass-and heat-transfer effect is carried out in channel with the atomizing lance, reduces flue-gas temperature；
4) enter the first absorption tower slurries spraying layer by the flue gas that the step (3) is handled and second absorption tower slurries spray
Layer carries out second of cycle washing；
5) flue gas handled by the step (4) passes through water scrubber disc layer, packing layer, the first absorption tower water spray layer and second
Absorption tower water spray layer carries out clear water three-level circulating water wash；
6) flue gas handled by the step (5) captures the sub-micro detached in the flue gas by the wet electrical dust precipitator
Scale particles；
7) flue described in the flue gas handled by the step (6) enters the top of the adsorption tower, passes through the activity
Charcoal adsorption layer carries out activated carbon adsorption；
8) flue gas handled by the step (7) is discharged by exhanst gas outlet.
10. integral process according to claim 9, which is characterized in that also step (9) microvesicle is used to aoxidize, the step
Suddenly (9) are located at after step (1) before step (2)；The microvesicle oxidation technology is by being arranged in the prewashing tower and the suction
Receive tower bottom the microvesicle distributor, by the air of dispersion from bottom of tower upwards through in the form of bubbles in continuous phase slurries on
It goes, the oxygen in air dissolves in liquid phase simultaneously and slurry reaction, bubble uplink have stirring action to slurries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371351.1A CN108479369A (en) | 2018-04-24 | 2018-04-24 | A kind of ultra-clean discharge ammonia desulfuration equipment and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371351.1A CN108479369A (en) | 2018-04-24 | 2018-04-24 | A kind of ultra-clean discharge ammonia desulfuration equipment and technique |
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| CN109045990A (en) * | 2018-10-29 | 2018-12-21 | 航天环境工程有限公司 | It is a kind of suitable for the double tower purification system of dangerous waste fume treatment and application |
| CN109569205A (en) * | 2018-12-26 | 2019-04-05 | 中冶南方工程技术有限公司 | Acid regeneration flue gas processing method and system |
| CN110201507A (en) * | 2019-05-09 | 2019-09-06 | 山东明晟化工工程有限公司 | A kind of smoke absorption technique based on acid ammonia treatment technology |
| CN111974185A (en) * | 2020-08-21 | 2020-11-24 | 武汉淡蓝环保科技开发有限公司 | Ammonia desulphurization and dust removal integrated flue gas ultralow emission device and use method thereof |
| CN112403206A (en) * | 2020-11-17 | 2021-02-26 | 江苏绿都环境工程有限公司 | Flue gas ultralow emission system based on wet desulfurization and denitrification technology |
| CN113332843A (en) * | 2021-05-18 | 2021-09-03 | 济南圣泉集团股份有限公司 | Process for deodorizing and deslagging casting flue gas |
| TWI780452B (en) * | 2019-12-06 | 2022-10-11 | 南韓商盛光Ｅｎｆ有限公司 | Ammonia gas removal system using co2 ultrafine bubble |
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Application publication date: 20180904 |