CN106964246A - A kind of flue gas processing device - Google Patents
A kind of flue gas processing device Download PDFInfo
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- CN106964246A CN106964246A CN201710231596.XA CN201710231596A CN106964246A CN 106964246 A CN106964246 A CN 106964246A CN 201710231596 A CN201710231596 A CN 201710231596A CN 106964246 A CN106964246 A CN 106964246A
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- flue gas
- doctor solution
- denitration
- liquid
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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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- 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
- 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
- B01D53/74—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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of flue gas processing device, accumulation area, desulfurization zone, nitrogen dioxide addition area, denitration region, demister, activated carbon adsorption layer and exhaust fan are followed successively by from bottom of device upwards；Cone tank, dust emissions valve, air inlet pipe are collected in accumulation area provided with flow-stopping plate, collecting polar plate, discharge electrode, earthing pole, high voltage power supply, dust, and collecting polar plate and discharge electrode uprush are set；Desulfurization zone includes that doctor solution spray equipment, doctor solution store groove and the doctor solution that stores doctor solution in groove is pumped into the doctor solution circulating pump of doctor solution spray equipment provided with flue gas desulfurization component；Denitration region includes denitration liquid spray equipment, denitration liquid provided with denitrating flue gas component and stores groove；It is cylindrical in the middle of flue gas processing device, upper and lower ends are conical tank body, tank body is using vertical vertical placement；Denitration liquid spray equipment and doctor solution spray equipment are helical form spray equipment；Demister is deflection plate demister or overflowing board demister.
Description
Technical field
The present invention relates to technical field of atmospheric pollution control, especially a kind of flue gas processing device.
Background technology
Recently as economic fast development and the propulsion of process of industrialization, smoke discharge amount is continued to increase, in air
Inhalable dust particles, carbon dioxide, nitrogen oxides, sulfur dioxide and the other minimum gas element pollution things contained causes air
Quality constantly declines, and the living environment given people causes very big harm, therefore increases the improvement of smoke pollution and turn into and work as front ring
Protect the important topic of work.
It is discharged into the proportion in the dust of air shared by fine dust very big and be to endanger the most serious in dust again,
Therefore, the removal efficiency to fine dust is improved, its concentration of emission is reached environmental standard, the danger to human body and environment is reduced
Evil, is the task of top priority in dust field.The dust emission standard for the thermal power industry newly implemented for 2012 causes big portion at present
Point dust arrester is difficult to reach discharge standard, and most of enterprise has to extend dust arrester main body on the basis of original dust arrester long
Degree, causes traditional structure dust arrester bulky too fat to move, and steel consumption is serious, and equipment one-time investment is big；Cumbersome, processing
Cost increases.
SO in flue gas2Health can be seriously threatened, this is due to SO2Inherently toxic gas, when it is by exhaling
Inhale road to enter after human body, respiratory apparatus can be stimulated, respiratory system is produced adverse reaction, trigger bronchial spasm, vomit, exhale
The symptoms such as difficulty are inhaled, can make one to suffer from breathing problem even asthma for a long time in this environment, while SO2Toxic action
Central nervous system, cardiovascular system, digestive system and the immune system of people can also be threatened.
NO in flue gasXSerious threat is there is to health.NO is easily combined with hemoglobin, makes blood transportation
The ability of oxygen declines, so as to trigger the central nervous system caused by blood anoxic to be damaged.When NO is oxidized to NO2Afterwards its
Toxicity is also higher 3-4 times than original.When NO is oxidized to NO2Afterwards, the respiratory system of human body can be entered, lung, branch to people
Tracheae can all produce influence, ultimately result in disease.NO2It is the presoma of acid rain, as the NO in airX, the mixing such as hydrocarbon
Reach after finite concentration that photochemical reaction, generation such as O easily occur under the irradiation by ultraviolet light3, PAN, aldehyde, ketone etc. it is secondary
Pollutant, ultimately forms the extremely strong photochemical fog of harmfulness that these primary pollutions and secondary pollution mix,
Its harmfulness is than original NOXHigh hundred times.
Due to SO2And NOXMain source be fuel burning, so according to the difference of burning feature, SO can will be administered2
And NOXMethod be following three class：Burning pre-treatment (Desulphurization of fuels, fuel denitration)；(combustion process takes off for combustion process improvement
Sulphur, low NOXBurning)；Burning post processing (flue gas desulfurization, denitrating flue gas).It is multi-party due to receiving technology, equipment and economic dispatch
The influence of face reason, current SO both at home and abroad2And NOXAdministering method is based on post processing of burning.
At present, domestic and international application it is more, it is more ripe while desulphurization denitration technology be that desulphurization and denitration is complete at two sets respectively
Completed in complete different reactor, but thus bring that equipment is complicated, scale is big, technological process is cumbersome and operating cost
High the problem of.
The content of the invention
The technical problem to be solved in the present invention is：Overcome that prior art device is complicated, cumbersome, processing cost compared with
High the problem of, there is provided a kind of flue gas processing device, can effectively handle various rich in dust, nitrogen oxides, the complexity of sulfur dioxide
Flue gas.
The technical solution adopted for the present invention to solve the technical problems is：A kind of flue gas processing device, from bottom of device to
On be followed successively by accumulation area, desulfurization zone, nitrogen dioxide addition area, denitration region, demister, activated carbon adsorption layer and exhaust fan.
Described accumulation area is located at the foot of whole device；Flue gas electric precipitation component, institute are provided with described accumulation area
The flue gas electric precipitation component stated includes flow-stopping plate, collecting polar plate, discharge electrode, earthing pole, high voltage power supply, the dust positioned at bottom and received
Collect cone tank and dust emissions valve；The cross section of the collecting polar plate is semicircle, bends towards air-flow inflow direction, collecting polar plate and
Discharge electrode uprush is set, and discharge electrode is arranged on between row's collecting polar plate；Accumulation area middle and lower part is provided with air inlet pipe.
Described desulfurization zone is provided with flue gas desulfurization component, and described flue gas desulfurization component is included positioned at desulfurization zone internal upper part
Doctor solution spray equipment, the doctor solution positioned at flue gas desulfurization component bottom store groove and doctor solution are stored to the desulfurization liquid pump in groove
Enter the doctor solution circulating pump of doctor solution spray equipment.Doctor solution spray equipment is helical form spray equipment；The water ejected is presented
It is vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to expanding the contact area of flue gas and solution, improve absorptivity and
Assimilation effect.It is circle that described doctor solution, which stores the cross section of groove, and doctor solution, which stores, is equipped with spray liquid aggregation dress above groove
Put, the lower end diameter of described spray liquid aggregation apparatus is less than the diameter that doctor solution stores groove topmost.Spray liquid aggregation apparatus
Spray liquid aggregation can be made to be back to doctor solution and store groove.Flue gas desulfurization component is furnished with doctor solution adding set, described doctor solution
Adding set includes desulfurization flow container and agitating device, doctor solution adding set by pipeline and valve connect doctor solution circulating pump with
Doctor solution stores groove.The doctor solution that described flue gas desulfurization component is used is that 8~12%, pH value is 6.5~7.0 for solid content
Lime slurry.
Described nitrogen dioxide addition area is provided with nitrogen dioxide air inlet pipe, nitrogen dioxide holding vessel and addition quantifier.
Described denitration region is provided with denitrating flue gas component, and described denitrating flue gas component is included positioned at denitration region internal upper part
Denitration liquid spray equipment, the denitration liquid positioned at denitrating flue gas component bottom store groove and denitration liquid are stored to the denitration liquid pump in groove
Enter the denitration liquid circulating pump of denitration liquid spray equipment.Denitration liquid spray equipment is helical form spray equipment；The water ejected is presented
It is vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to expanding the contact area of flue gas and solution, improve absorptivity and
Assimilation effect.It is circle that described denitration liquid, which stores the cross section of groove, and denitration liquid, which stores, is equipped with spray liquid aggregation dress above groove
Put, the lower end diameter of described spray liquid aggregation apparatus is less than the diameter that denitration liquid stores groove topmost.Spray liquid aggregation apparatus
Spray liquid aggregation can be made to be back to denitration liquid and store groove.Denitrating flue gas component is furnished with denitration liquid adding set, described denitration liquid
Adding set includes denitration flow container and agitating device, denitration liquid adding set by pipeline and valve connect denitration liquid circulating pump with
Denitration liquid stores groove.Described denitration liquid is that solid content is the lime slurry that 0.1~8%, pH value is 11.0~13.0.
Denitration liquid circulating pump connects doctor solution adding set with valve by pipeline.
Described denitration region top is provided with demister, and demister is to be collected the big drop in gas, and is allowed to return
Return, reduce the moisture in gas, its operation principle is that gas enters demister, by a series of bends, discharged from top, and water
Drop is due to the effect of its quality and kinetic energy, and when by racetrack portion, straight line falls, and collides the surface of demister, and to weight
Rebounded under power effect.
Described demister top is provided with activated carbon adsorption layer, described activated carbon adsorption layer and sets activated carbon, activity
Charcoal requirement has the advantages that hole is flourishing, specific surface area is big, adsorption rate is fast, friction resistant, resistance to flushing, such as the process long period
Operation, it is found that activated carbon becomes sticky, gas velocity just needs to change activated carbon in time when reducing.
Specifically, being cylindrical in the middle of described flue gas processing device, upper and lower ends are on conical tank body, the tank body
Offer observation port and maintenance replacement port, tank body volume size can according to pending gas flow number depending on, using vertical perpendicular
It is straight to place.
In order to increase the flow velocity of air and be easy to the clean gas handled to discharge, described flue gas processing device air inlet pipe
Exhaust fan is installed at the conical tank body of front end and integrated apparatus topmost.
Further preferred equipment, demister is deflection plate demister or overflowing board demister.
The beneficial effects of the invention are as follows flue gas enters in accumulation area first, and dust process produces cyclone and electricity collects
The superposition dust collecting effect of dirt device, dust sinks in dust collection cone tank along collecting polar plate and periodically emitted；Gas continues
Rise the doctor solution sprayed with doctor solution spray equipment to contact, the sulfur dioxide in gas chemically reacts with doctor solution, instead
Answer product to flow into bottom doctor solution with doctor solution to store in groove；Flue gas ascends into nitrogen dioxide addition area, and nitrogen dioxide enters
Tracheae adds nitrogen dioxide, makes the NO in flue gas2/NOX=0.4~0.5, NO and NO in flue gas2Combine to form N2O3, NO2Deposit
The effect being catalyzed in class, flue gas continues to rise to be contacted with the denitration liquid of denitration liquid spray equipment ejection, the NO in gasXWith taking off
Nitre liquid chemically reacts, and reaction product flows into bottom denitration liquid with denitration liquid and stored in groove, de- after chemically reacting
Nitre liquid is continuing with as doctor solution；Gas is subsequently into demister, and the drop in gas is blocked herein；Then gas
Body enter the material being mingled with activated carbon adsorption layer, gas and drop herein be intercepted absorb, so far flue gas is located
The gas of cleaning is managed into, qualified discharge is realized.
The flue gas processing device of the present invention is simple in construction, it is easy to manufactures, can effectively purify rich in dust, nitrogen oxides and two
The flue gas of sulfur oxide.As the calcium base alkali of desulfurizing agent and denitrfying agent is cheap, wide material sources, recycles, reduce cost.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of embodiments of the invention；
In figure：1. accumulation area, 1-1. flow-stopping plates, 1-2. collecting polar plates, 1-3. discharge electrodes, 1-4. earthing poles, 1-5. high pressures
Power supply, 1-6. dusts collect cone tank, 1-7. dust emissions valves, 1-8. air inlet pipe, 2. desulfurization zones, 2-1. doctor solutions spray dress
Put, 2-2. doctor solutions store groove, 2-3. doctor solution circulating pumps, 2-4. doctor solution adding sets, 3. nitrogen dioxide addition area, 3-1.
Nitrogen dioxide air inlet pipe, 3-2. nitrogen dioxide holding vessel and addition quantifier, 4. denitration regions, 4-1. denitration liquid spray equipments, 4-
2. denitration liquid stores groove, 4-3. denitration liquid circulating pumps, 4-4. denitration liquid adding sets, 5. demisters, 6. activated carbon adsorption layers, 7.
Exhaust fan, 8. spray liquid aggregation apparatus.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Embodiment
A kind of flue gas processing device of the invention as shown in Figure 1, accumulation area 1, desulfurization are followed successively by from bottom of device upwards
Area 2, nitrogen dioxide addition area 3, denitration region 4, demister 5, activated carbon adsorption layer 6 and exhaust fan 7.
Described accumulation area 1 is located at the foot of whole device；Flue gas electric precipitation component is provided with described accumulation area 1,
Described flue gas electric precipitation component includes flow-stopping plate 1-1, collecting polar plate 1-2, discharge electrode 1-3, earthing pole 1-4, high voltage power supply 1-
5th, the dust positioned at bottom collects cone tank 1-6 and dust emissions valve 1-7；The cross section of the collecting polar plate 1-2 is semicircle,
Air-flow inflow direction is bent towards, collecting polar plate 1-2 and discharge electrode the 1-3 uprush is set, discharge electrode 1-3 is arranged on same arrange in a row
Between dirt pole plate 1-2；The middle and lower part of accumulation area 1 is provided with air inlet pipe 1-8.
Described desulfurization zone 2 is provided with flue gas desulfurization component, and described flue gas desulfurization component includes being located at desulfurization zone internal upper part
Doctor solution spray equipment 2-1, the doctor solution positioned at bottom store groove 2-2 and the doctor solution that stores doctor solution in groove be pumped into it is de-
The doctor solution circulating pump 2-3 of sulphur liquid spray equipment.Doctor solution spray equipment 2-1 is helical form spray equipment；The water ejected is in
It is existing vaporific, and mixing together between water smoke, dead angle is not stayed, is conducive to expanding the contact area of flue gas and solution, improves absorptivity
And assimilation effect.It is circle that described doctor solution, which stores groove 2-2 cross section, and doctor solution is stored above groove provided with spray liquid aggregation
Device 8, the lower end diameter of described spray liquid aggregation apparatus is less than the diameter that doctor solution stores groove topmost.Spray liquid aggregation dress
Putting 8 can make spray liquid aggregation be back to doctor solution and store groove 2-2.Flue gas desulfurization component is described equipped with doctor solution adding set 2-4
Doctor solution adding set 2-4 include desulfurization flow container and agitating device, doctor solution adding set by pipeline connect with valve takes off
Sulphur liquid circulating pump 2-3 stores groove 2-2 with doctor solution.The doctor solution that described flue gas desulfurization component is used is 8 for solid content~
12%th, pH value is 6.5~7.0 lime slurry.
Described nitrogen dioxide addition area 3 is provided with nitrogen dioxide air inlet pipe 3-1, nitrogen dioxide holding vessel and addition quantifier
3-2。
Described denitration region 4 is provided with denitrating flue gas component, and described denitrating flue gas component includes being located at denitration region internal upper part
Denitration liquid spray equipment 4-1, the denitration liquid positioned at denitrating flue gas component bottom stores groove 4-2 and stores denitration liquid in groove
Denitration liquid is pumped into the denitration liquid circulating pump 4-3 of denitration liquid spray equipment.Denitration liquid spray equipment 4-1 is helical form spray equipment；
The water ejected is presented vaporific, and mixing together between water smoke, does not stay dead angle, is conducive to expanding the contact surface of flue gas and solution
Product, improves absorptivity and assimilation effect.It is circle that described denitration liquid, which stores groove 4-2 cross section, and denitration liquid is stored above groove
Provided with spray liquid aggregation apparatus 8, the lower end diameter of described spray liquid aggregation apparatus 8 stores the straight of groove topmost less than denitration liquid
Footpath.Spray liquid aggregation apparatus 8 can make spray liquid aggregation be back to denitration liquid and store groove 4-2.Denitrating flue gas component is furnished with denitration liquid
Adding set 4-4, described denitration liquid adding set includes denitration flow container and agitating device, and denitration liquid adding set passes through pipeline
Denitration liquid circulating pump 4-3 is connected with valve and stores groove 4-2 with denitration liquid.Described denitration liquid is that solid content is 0.1~8%, pH
It is worth the lime slurry for 11.0~13.0.
Denitration liquid circulating pump 4-3 connects doctor solution adding set 2-4 with valve by pipeline.
The described top of denitration region 4 is provided with demister 5, and demister 5 is to be collected the big drop in gas, and is allowed to
Return, reduce the moisture in gas, its operation principle is that gas enters demister, by a series of bends, from top discharge, and
Water droplet is due to the effect of its quality and kinetic energy, and when by racetrack portion, straight line falls, and collides the surface of demister 4, and to
Rebounded under Action of Gravity Field.
The described top of demister 5 is provided with activated carbon adsorption layer 6, described activated carbon adsorption layer 6 and sets activated carbon, living
Property charcoal requirement have the advantages that hole prosperity, specific surface area is big, adsorption rate is fast, friction resistant, resistance to flushing, such as pass through the long period
Operation, find activated carbon become sticky, gas velocity reduce when just need to change activated carbon in time.
Specifically, being cylindrical in the middle of described flue gas processing device, upper and lower ends are on conical tank body, the tank body
Offer observation port and maintenance replacement port, tank body volume size can according to pending gas flow number depending on, using vertical perpendicular
It is straight to place.
In order to increase the flow velocity of air and be easy to the clean gas handled to discharge, described flue gas processing device air inlet pipe
Exhaust fan 7 is installed at the conical tank body of 1-8 front ends and flue gas processing device topmost.
Further preferred equipment, demister 5 is deflection plate demister.
For ease of overhaul of the equipments and equipment rotation, described flue gas processing device have be arranged in parallel it is standby each other or simultaneously
Two sets of work, the gas approach of two sets of flue gas cleaners connects fume collection induction system, two sets with valve by pipeline
The gas approach of flue gas processing device connects exhaust tube by pipeline with valve.It can be realized and switched by valve, work as exhaust gas volumn
When big also can two complete equipments run simultaneously.
Flue gas is initially entered in accumulation area 1, and dust process produces the superposition dust collecting effect of cyclone and electrostatic (electric dust) precipitator,
Dust sinks in dust collection cone tank 1-6 along collecting polar plate 1-2 and periodically emitted；Gas continues to rise to be sprayed with doctor solution
Sulfur dioxide in the doctor solution contact that shower device 2-1 sprays, gas chemically reacts with doctor solution, and reaction product is with de-
Sulphur liquid flows into bottom doctor solution and stored in groove 2-2；Flue gas ascends into nitrogen dioxide addition area 3, and nitrogen dioxide air inlet pipe 3-1 adds
Plus nitrogen dioxide gas, make the NO in flue gas2/NOX=0.4~0.5, NO and NO in flue gas2Combine to form N2O3, NO2In the presence of
The effect of class catalysis, flue gas continues to rise to be contacted with the denitration liquid spray equipment 4-1 denitration liquids sprayed, the NO in gasXWith
Denitration liquid chemically reacts, and reaction product flows into bottom denitration liquid with denitration liquid and stored in groove 4-2, after chemically reacting
Denitration liquid be continuing with as doctor solution；Gas is subsequently into demister 5, and the drop in gas is blocked herein；
Then gas enters activated carbon adsorption layer 6, and the material and drop being mingled with gas are intercepted herein to be absorbed, so far cigarette
Gas is processed into the gas of cleaning, realizes qualified discharge.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (2)
1. a kind of flue gas processing device, it is characterised in that：Including accumulation area (1), desulfurization zone (2), nitrogen dioxide addition area (3),
Denitration region (4), demister (5), activated carbon adsorption layer (6) and exhaust fan (7)；
Described accumulation area (1) is located at the foot of whole device；Flue gas electric precipitation component is provided with described accumulation area (1),
Described flue gas electric precipitation component includes flow-stopping plate (1-1), collecting polar plate (1-2), discharge electrode (1-3), earthing pole (1-4), height
Voltage source (1-5), dust collect cone tank (1-6) and dust emissions valve (1-7)；The cross section of the collecting polar plate (1-2) is
Semicircle, bends towards air-flow inflow direction, and the collecting polar plate (1-2) and discharge electrode (1-3) uprush are set, discharge electrode (1-
3) it is arranged on between row's collecting polar plate (1-2)；Accumulation area (1) middle and lower part is provided with air inlet pipe (1-8)；
Described desulfurization zone (2) is provided with flue gas desulfurization component, and described flue gas desulfurization component sprays including superposed doctor solution
The doctor solution that shower device (2-1), the doctor solution positioned at bottom store groove (2-2) and stored doctor solution in groove is pumped into doctor solution spray
The doctor solution circulating pump (2-3) of shower device；Doctor solution spray equipment (2-1) is helical form spray equipment；The water ejected is presented
It is vaporific, and mixing together between water smoke, dead angle is not stayed, is conducive to expanding the contact area of flue gas and solution, improves absorptivity；Institute
It is circle that the doctor solution stated, which stores the cross section of groove (2-2), and doctor solution, which stores, is provided with spray liquid aggregation apparatus (8), institute above groove
The lower end diameter for the spray liquid aggregation apparatus stated is less than the diameter that doctor solution stores groove topmost；Spray liquid aggregation apparatus (8) can
Spray liquid aggregation is back to doctor solution and store groove (2-2)；Flue gas desulfurization component is furnished with doctor solution adding set (2-4), described
Doctor solution adding set (2-4) include desulfurization flow container and agitating device, doctor solution adding set connected by pipeline with valve
Doctor solution circulating pump (2-3) stores groove (2-2) with doctor solution；The doctor solution that described flue gas desulfurization component is used is for solid content
8~12%, pH value is 6.5~7.0 lime slurry；
Described nitrogen dioxide addition area (3) is provided with nitrogen dioxide air inlet pipe (3-1), nitrogen dioxide holding vessel and addition quantifier
(3-2)；
Described denitration region (4) is provided with denitrating flue gas component, and described denitrating flue gas component sprays including superposed denitration liquid
The denitration liquid that shower device (4-1), the denitration liquid positioned at bottom store groove (4-2) and stored denitration liquid in groove is pumped into denitration liquid spray
The denitration liquid circulating pump (4-3) of shower device；Denitration liquid spray equipment (4-1) is helical form spray equipment；The water ejected is presented
It is vaporific, and mixing together between water smoke, dead angle is not stayed, is conducive to expanding the contact area of flue gas and solution, improves assimilation effect；
It is circle that described denitration liquid, which stores the cross section of groove (4-2), and denitration liquid, which stores, is provided with spray liquid aggregation apparatus (8) above groove,
The lower end diameter of described spray liquid aggregation apparatus (8) is less than the diameter that denitration liquid stores groove topmost；Spray liquid aggregation apparatus
(8) spray liquid aggregation can be made to be back to denitration liquid and store groove (4-2)；Denitrating flue gas component is furnished with denitration liquid adding set (4-4),
Described denitration liquid adding set includes denitration flow container and agitating device, and denitration liquid adding set connects de- with valve by pipeline
Nitre liquid circulating pump (4-3) stores groove (4-2) with denitration liquid；Described denitration liquid is that solid content is that 0.1~8%, pH value is 11.0
~13.0 lime slurry；
Denitration liquid circulating pump (4-3) connects doctor solution adding set (2-4) with valve by pipeline；
Described denitration region (4) top is provided with demister (5)；Described demister (5) top is provided with activated carbon adsorption layer (6)；
It is cylindrical in the middle of described flue gas processing device, upper and lower ends are to offer observation on conical tank body, the tank body
Mouthful and maintenance replacement port, tank body volume size according to pending gas flow number depending on, using it is vertical it is vertical place；
Exhaust fan (7) is installed at the conical tank body of flue gas processing device topmost；
Demister (5) is deflection plate demister or overflowing board demister；
Described flue gas processing device, which has, is arranged in parallel standby each other or while two sets worked.
2. a kind of flue gas processing device according to claim 1, it is characterised in that：Using a kind of fume treatment of the present invention
The step of device carries out fume treatment is as follows；
Flue gas is initially entered in accumulation area (1), and dust process produces the superposition dust collecting effect of cyclone and electrostatic (electric dust) precipitator, powder
Dirt sinks in dust collection cone tank (1-6) along collecting polar plate (1-2) and periodically emitted；Gas continues to rise and desulfurization
Sulfur dioxide in the doctor solution contact that liquid spray equipment (2-1) sprays, gas chemically reacts with doctor solution, reaction generation
Thing flows into bottom doctor solution with doctor solution and stored in groove (2-2)；Flue gas ascends into nitrogen dioxide addition area (3), nitrogen dioxide
Air inlet pipe (3-1) adds nitrogen dioxide gas, makes the NO in flue gas2/NOX=0.4~0.5, NO and NO in flue gas2With reference to shape
Into N2O3, NO2The effect of class catalysis is there is, the denitration liquid that flue gas continues rising and denitration liquid spray equipment (4-1) ejection connects
Touch, the NO in gasXChemically reacted with denitration liquid, reaction product flows into bottom denitration liquid with denitration liquid and stores groove (4-
2) in, the denitration liquid after chemically reacting is continuing with as doctor solution；Gas is subsequently into demister (5), in gas
Drop is blocked herein；Then gas enters the material being mingled with activated carbon adsorption layer (6), gas and drop at this
In be intercepted absorb, so far flue gas be processed into cleaning gas, realize qualified discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231596.XA CN106964246A (en) | 2017-04-11 | 2017-04-11 | A kind of flue gas processing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946650A (en) * | 2018-07-12 | 2018-12-07 | 蚌埠市昊源压缩机制造有限公司 | A kind of gas station oil gas filter device |
| TWI721293B (en) * | 2018-07-20 | 2021-03-11 | 金索股份有限公司 | Dry chemical adsorption treatment device for cyclone dust collection |
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
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| CN104606994A (en) * | 2015-01-07 | 2015-05-13 | 常州大学 | Dedusting, denitration and desulfuration integrated device |
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| CN104606994A (en) * | 2015-01-07 | 2015-05-13 | 常州大学 | Dedusting, denitration and desulfuration integrated device |
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| 刘芳: "配NO2调节NOx氧化度碱液吸收-塔硫硝同脱实验研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946650A (en) * | 2018-07-12 | 2018-12-07 | 蚌埠市昊源压缩机制造有限公司 | A kind of gas station oil gas filter device |
| TWI721293B (en) * | 2018-07-20 | 2021-03-11 | 金索股份有限公司 | Dry chemical adsorption treatment device for cyclone dust collection |
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
| CN114345247B (en) * | 2021-12-10 | 2023-12-05 | 江苏碳和环境科技有限公司 | Packing tower |
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