CN105903332B - Semi-dry method desulfurization and denitrification integrated process and device in synergism with charged oxidation - Google Patents
Semi-dry method desulfurization and denitrification integrated process and device in synergism with charged oxidation Download PDFInfo
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- CN105903332B CN105903332B CN201610463224.5A CN201610463224A CN105903332B CN 105903332 B CN105903332 B CN 105903332B CN 201610463224 A CN201610463224 A CN 201610463224A CN 105903332 B CN105903332 B CN 105903332B
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Abstract
The invention a semi-dry method desulfurization and denitrification integrated process and device in synergism with charged oxidation. The device comprises an absorption tower. A gradually-expanding section with the diameter gradually increased from bottom to top is arranged at the bottom of the absorption tower, a smoke inlet pipe is arranged at the bottom of the gradually-expanding section, an absorbent feeding port is formed in the wall of the gradually-expanding section and connected with an absorbent bin through a first screw feeder, multiple layers of atomizing nozzles are arranged at the lower middle part in the absorption tower, and a smoke outlet is formed in the top of the absorption tower. Openings of the atomizing nozzles are all formed upwards, the atomizing nozzles are all connected with a water tank through a water pump and further connected with an atomized compressed air pipeline, corona-charged rings are arranged above the atomizing nozzles respectively and supplied with power through a high-voltage power supply, and an oxidizing agent outlet pipeline is connected with the water tank or the atomized compressed air pipeline or the absorption tower.
Description
Technical field
The invention belongs to a kind of gas pollution control technology, and in particular to a kind of to be aoxidized with strong oxidizer by water fog charge
Cooperative achievement semi-dry process flue gas desulphurization denitrification integral process and device.
Background technology
China is coal-fired big country, for a long time coal in the ratio of Chinese primary energy production and consumption structure all 70%
Left and right.A large amount of consumption of coal cause SO2、NOxA large amount of discharges, serious environment pollution brought to the economy of China huge
Loss.Control SO2、NOxIt is that coal-fired flue-gas are carried out with desulphurization denitration to pollute maximally effective technological means, and current desulphurization and denitration is usual
Using two covering devices, invest big system complex and operating cost is high, therefore, desulfurization and denitrification integral technology becomes future development
Direction.
In desulfurization technology, wet process of FGD efficiency >=95%, but, wet method fume desulfurizing system is complex, and
Wet process of FGD product is liquid, needs product processing device to carry out processed to liquid product, causes at the beginning of wet desulphurization
The problems such as phase investment cost is high, floor space is big.Semi-dry process flue gas desulphurization simple system, and desulfurization product is solid-state, without the need for right
Product carries out processed, so semi-dry process flue gas desulphurization initial investment expense is low, floor space is little, is more suitable for China numerous
Medium and small unit is newly-built or transforms the restricted truth of fund and place existed during sulfur removal technology, obtains relatively rapider at home
Development.However, the flue gas desulfurization of conventional semi method is due to belonging to gas-liquid-solid phase reaction desulfurization, passed by collision probability, gas-liquid-solid
Matter etc. affects, and semi-dry desulphurization efficiency highest only has 90% or so, it is impossible to meets increasingly strict environmental requirement and is particularly flue gas
The requirement of ultra-clean discharge, and the sorbent utilization of conventional semi method flue gas desulfurization technique is not high, not only causes desulfurizing agent
Serious waste, and operating cost is increased, if the desulfuration efficiency and desulfurizing agent profit of semi-dry method flue gas desulfurization technique can be improved
With rate and while realize denitration, then the low, non-wastewater discharge of simple system, investment cost of semidry process etc. can be given full play to excellent
Point, with obvious technical advantage and competitiveness.
The content of the invention
To overcome the defect of prior art, the invention provides a kind of semi-dry desulfurization and denitrification one of charged oxidation collaboration
Chemical industry skill and device, improve the utilization rate of semidry method absorbent on the whole with desulfuration efficiency and realize semi-dry desulfurization and denitrification one
Change operation.
For achieving the above object, the technical scheme is that:
A kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration, including absorption tower, the bottom on the absorption tower
Portion is provided with the divergent segment that diameter gradually increases from the bottom to top, and the divergent segment bottom is provided with flue gas inlet tube, the divergent segment
Wall is provided with absorbent charging aperture, and the absorbent charging aperture connects absorbent storehouse, the absorption by the first screw(-type) feeder
Middle and lower part in tower is provided with multilamellar atomizer, is provided with exhanst gas outlet at the top of the absorption tower;Wherein, the multilamellar atomization spray
The spout of mouth sets up, and the multilamellar atomizer is connected with water tank by water pump, and the multilamellar atomizer is equal
Connection atomization compressed air piping, is provided with corona charging ring above the spout of every layer of atomizer, the corona charging ring passes through
High voltage power supply is powered, and oxidant outlet pipeline is connected with water tank, or oxidant outlet pipeline is connected with atomization compressed air piping,
Or oxidant outlet pipeline is connected with absorption tower.
Corona charging ring is provided with above the atomizer of the present invention, is strengthened the charged rear electrostatic force of atomized drop, is effectively dropped
Low fogging size droplet diameter improves droplet particles quantity and improves Spray Uniformity, realizes the efficient humidification activation of absorbent, promotes
Desulphurization reaction is rapidly and efficiently carried out, and improves desulfuration efficiency;The present invention increased oxidant outlet pipeline, oxidant is entered
Enter in absorption tower, by SO2SO is oxidized into NO3With NO2, and with absorbed by absorbent, so as to reach the mesh of desulphurization denitration
's;The present invention is provided with multilamellar atomizer, realizes the purpose of multi-lever electric and multi-stage oxidizing, so as to further improve desulfurization
The efficiency of denitration is the utilization rate of absorbent;The present invention uses corona charging ring, using corona discharge (ionized gas) mode lotus
Electricity, can adopt higher charged voltage, realize higher carrying capacity, be more beneficial for droplet dispersion and promote droplet and absorbent
Grain crash response, improves absorption efficiency.
Preferably, the import connection air compressor of the atomization compressed air piping.
It is further preferred that the atomizer is air atomizer spray nozzle.
Preferably, the import connection high-pressure pump of the oxidant outlet pipeline.
Preferably, the oxidant outlet pipeline is connected as with absorption tower, the oxidant outlet pipeline and the flue gas
Inlet tube connects, while connecting at the oxidant outlet pipeline and the absorption tower between the divergent segment and atomizer.
Preferably, the exhanst gas outlet connects separator.
It is further preferred that the solid matter outlet of the separator is connected with absorption tower by the second screw(-type) feeder.
The absorbent not utilized can be recycled, so as to improve the utilization ratio of absorbent.
A kind of technique of utilization said apparatus desulphurization denitration, oxidant is passed through to water tank Jing water pumps conveying after being mixed with water
Atomization is carried out to atomizer and forms atomized drop, after high voltage power supply is powered to corona charging ring, made through corona charging ring
Atomized drop is charged;Absorbent is weighed Jing the first screw(-type) feeder and is mixed with flue gas after absorbent charging aperture enters absorption tower
After uniform, rise in absorption tower with flue gas, the charged aerosolized liquid droplets being collectively forming with multilamellar atomizer and corona charging ring
Multistage mixing is carried out, absorbent is carried out efficient humidification activation by charged aerosolized liquid droplets, make absorbent remove the major part in flue gas
SO2, oxidant is by remaining fraction SO2It is multistage with NO to be oxidized to SO respectively3With NO2Afterwards, then in charged aerosolized liquid droplets and suction
Receive SO is removed under agent synergy3With NO2, the flue gas after desulphurization denitration goes out from absorption tower top row.
A kind of technique of utilization said apparatus desulphurization denitration, gaseous oxidizer is passed through to atomization compressed air piping and mist
Atomizer is delivered to jointly with water after changing compressed air mixing and carry out atomization and form atomized drop, high voltage power supply gives corona charging ring
After power supply, make the atomized drop through corona charging ring charged;The first screw(-type) feeders of absorbent Jing weigh to enter by absorbent
After material mouth is mixed homogeneously with flue gas after entering absorption tower, rise in absorption tower with flue gas, with multilamellar atomizer and corona lotus
The charged aerosolized liquid droplets that electric ring is collectively forming carry out multistage mixing, and absorbent is carried out efficient humidification activation by charged aerosolized liquid droplets,
Absorbent is made to remove the most of SO in flue gas2, oxidant is by remaining fraction SO2It is multistage with NO to be oxidized to SO respectively3With
NO2Afterwards, then SO is removed under charged aerosolized liquid droplets with absorbent synergy3With NO2, the flue gas after desulphurization denitration is from absorption
Tower top is discharged.
A kind of technique of utilization said apparatus desulphurization denitration, high-pressure pump are directly delivered to gaseous oxidizer in absorption tower
Different parts, the water in water tank is delivered to atomizer by water pump to carry out atomization and forms atomized drop, and high voltage power supply gives corona lotus
After electric ring is powered, make the atomized drop through corona charging ring charged;The first screw(-type) feeders of absorbent Jing are weighed by absorbing
After agent charging aperture is mixed homogeneously with flue gas after entering absorption tower, rise in absorption tower with flue gas, with multilamellar atomizer and electricity
The charged aerosolized liquid droplets that charged ring of swooning is collectively forming carry out multistage mixing, and absorbent is carried out efficiently humidification and lived by charged aerosolized liquid droplets
Change, make absorbent remove the most of SO in flue gas2, oxidant is by remaining fraction SO2It is multistage with NO to be oxidized to SO respectively3
With NO2Afterwards, then SO is removed under charged aerosolized liquid droplets with absorbent synergy3With NO2, the flue gas after desulphurization denitration is from suction
Receive tower top to discharge.
Present invention process directly adds oxidant in semi-dry desulfurizing process, can carry out desulphurization denitration simultaneously, realizes
The integration of desulphurization denitration;Present invention process is charged to atomized drop using corona charging ring, not only increases semidry method and takes off
Sulphur efficiency, and promote the NO of absorbent pair2Absorb, so as to improve denitration efficiency.
Preferably, the absorbent is calcium-base absorbing agent, sodio absorbent or magnesio absorbent.
Preferably, the position that high-pressure pump is directly delivered to gaseous oxidizer in absorption tower have flue gas inlet tube and with gradually
At the absorption tower expanded between section and atomizer.
Preferably, the flue gas for going out from absorption tower top row is discharged from the top of separator through the flue gas after separator, separation, point
Solid material after enters the divergent segment on absorption tower from second screw(-type) feeder of bottom of separator, so as to realize absorbent
Make full use of.
Preferably, the oxidant can adopt phase oxidative agent such as KMnO4Deng, Oxygen in Liquid agent such as NaClO3Solution etc., gas
Phase oxidation agent such as O3、ClO2Deng.
The invention has the beneficial effects as follows:
The present invention can effectively reduce drop after electrostatic force enhancing and droplets using after atomized drop corona charging
Particle diameter improves droplet particles quantity and improves Spray Uniformity, improves the collision probability of atomized drop and absorbent, realizes inhaling
The efficient humidification activation of agent is received, promotes desulphurization reaction rapidly and efficiently to carry out, major part SO in removing flue gas2, while utilizing strong oxygen
Agent is to fraction SO2And whole NO carries out classification and is oxidized to SO3With NO2Absorbed using semidry process afterwards, carried on the whole
The utilization rate of high semidry method absorbent is with desulfuration efficiency and realizes that semi-dry desulfurization and denitrification integral runs.
Description of the drawings
Structural representations of the Fig. 1 for embodiment 1;
Structural representations of the Fig. 2 for embodiment 2;
Structural representations of the Fig. 3 for embodiment 3;
Structural representations of the Fig. 4 for corona charging ring;
Wherein, 1. Oxygen in Liquid agent delivery pump, 2. technique water tank, 3. technique water pump, 4. air compressor, 5. absorbent
Storehouse, 6. high voltage power supply, 7. atomizer, 8. corona charging ring, 9. absorption tower, 10. separator, 11. second screw(-type) feeders,
12. high-pressure pumps.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Embodiment 1
A kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration, as shown in figure 1, including absorption tower 9, absorbing
The bottom of tower 9 is provided with the divergent segment that diameter gradually increases from the bottom to top, and divergent segment bottom is provided with flue gas inlet tube, the wall of divergent segment
Be provided with absorbent charging aperture, absorbent charging aperture connects absorbent storehouse 5 by the first screw(-type) feeder, in absorption tower under
Portion is provided with multilamellar atomizer 7, and exhanst gas outlet is provided with the top of absorption tower;Wherein, the spout of multilamellar atomizer 7 is set upwards
Put, multilamellar atomizer 7 is connected with technique water tank 2 by technique water pump 3, it is empty that multilamellar atomizer 7 is all connected with atomization compression
Feed channel, is provided with corona charging ring 8 above the spout of every layer of atomizer 7, its structure is as shown in figure 4, corona charging ring 8 passes through
High voltage power supply 6 is powered, and oxidant outlet pipeline is connected with technique water tank 2.
The import connection air compressor 4 of atomization compressed air piping;Atomizer 7 is air atomizer spray nozzle.
Exhanst gas outlet connects separator 10.The solid matter outlet of separator 10 is by the second screw(-type) feeder 11 and absorption
Tower 9 connects.
Its technique is:
Oxidant is passed through to technique water tank 2 (during using Oxygen in Liquid agent, Oxygen in Liquid agent is conveyed by Oxygen in Liquid agent
Pump 1 is delivered to technique water tank 2, and using during phase oxidative agent, phase oxidative agent is directly added into technique water tank and 2) is mixed with fresh water (FW)
Atomizer 7 is delivered to by technique water pump 3 carries out atomization and form atomized drop, high voltage power supply 6 is powered to corona charging ring 8
Afterwards, make the atomized drop through corona charging ring 8 charged;The first screw(-type) feeders of absorbent Jing from absorbent storehouse 5 are weighed
After mixing homogeneously with flue gas after absorption tower 9 is entered by absorbent charging aperture, rise in absorption tower with flue gas, be atomized with multilamellar
The charged aerosolized liquid droplets that nozzle 7 and corona charging ring 8 are collectively forming carry out multistage mixing, and absorbent is carried out by charged aerosolized liquid droplets
Efficiently humidification activation, makes absorbent remove the most of SO in flue gas2, oxidant is by remaining fraction SO2With the multistage difference of NO
It is oxidized to SO3With NO2Afterwards, then SO is removed under charged aerosolized liquid droplets with absorbent synergy3With NO2, after desulphurization denitration
Flue gas goes out from 9 top row of absorption tower., through separator 10, the flue gas after separation is from separator 10 for the flue gas gone out from 9 top row of absorption tower
Top is discharged, and the solid material after separation enters the flaring on absorption tower 9 from second screw(-type) feeder of bottom 11 of separator 10
Section, so as to realize making full use of for absorbent.
Phase oxidative agent is KMnO4, Oxygen in Liquid agent is NaClO3Solution.
Absorbent is calcium oxide or calcium hydroxide, or is sodio absorbent, or is magnesio absorbent.
Principle is:After flue gas enters absorption tower, mixed with the new absorbent sent into and the material for separating loopback, together
When flue gas in most of NO and fraction SO2Agent is oxidized step by step is oxidized to NO2、SO3, the SO in flue gas afterwards2、NO2、SO3
The droplet charged through charged ring produced with atomizer is contacted and carries out absorbing reaction.Due to the charged rear electrostatic force of atomized drop
Size droplet diameter can effectively be reduced to improve droplet particles quantity and improve Spray Uniformity after enhancing and droplets, therefore carried
High collision probability of the atomized drop with absorbent, can realize the efficient humidification activation of absorbent, promote absorbing reaction quick
Efficiently carry out, improve the utilization rate and desulfuration efficiency of absorbent on the whole.NO in flue gas is oxidized to soluble in water simultaneously
NO2, the integration operation of desulphurization denitration can be synchronously realized in semidry method absorption tower.Flue gas after purification is pre- through separator
Follow-up electrostatic precipitation system is entered after separation, from smoke stack emission after dedusting.Using the technique, be capable of achieving desulfuration efficiency 95% with
Upper, denitration efficiency more than 80%.
Embodiment 2
A kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration, as shown in Fig. 2 including absorption tower 9, absorbing
The bottom of tower 9 is provided with the divergent segment that diameter gradually increases from the bottom to top, and divergent segment bottom is provided with flue gas inlet tube, the wall of divergent segment
Be provided with absorbent charging aperture, absorbent charging aperture connects absorbent storehouse 5 by the first screw(-type) feeder, in absorption tower under
Portion is provided with multilamellar atomizer 7, and the top on absorption tower 9 is provided with exhanst gas outlet;Wherein, the spout of multilamellar atomizer 7 is upwards
Arrange, multilamellar atomizer 7 is connected with technique water tank 2 by technique water pump 3, multilamellar atomizer 7 is all connected with atomization compression
Air line, is provided with corona charging ring 8 above the spout of every layer of atomizer 7, corona charging ring 8 is powered by high voltage power supply 6,
Oxidant outlet pipeline is connected with atomization compressed air piping.
The import connection air compressor 4 of atomization compressed air piping.Atomizer 7 is air atomizer spray nozzle.
The import connection high-pressure pump 12 of oxidant outlet pipeline.
Exhanst gas outlet connects separator 10.The solid matter outlet of separator 10 is by the second screw(-type) feeder 11 and absorption
Tower 9 connects.
Its technique is:
By gaseous oxidizer after high-pressure pump 12 is passed through to atomization compressed air piping and is mixed with atomization compressed air
Atomizer 7 is delivered to jointly with fresh water (FW) carry out atomization and form atomized drop, after high voltage power supply 6 is to the power supply of corona charging ring 8, make
It is charged through the atomized drop of corona charging ring 8;The first screw(-type) feeders of absorbent Jing from absorbent storehouse 5 are weighed by inhaling
Receive after mixing homogeneously with flue gas after agent charging aperture enters absorption tower 9, rise in absorption tower with flue gas, with multilamellar atomizer 7
Multistage mixing is carried out with the charged aerosolized liquid droplets that corona charging ring 8 is collectively forming, absorbent is carried out efficiently by charged aerosolized liquid droplets
Humidification activation, makes absorbent remove the most of SO in flue gas2, oxidant is by remaining fraction SO2It is multistage with NO to aoxidize respectively
For SO3With NO2Afterwards, then SO is removed under charged aerosolized liquid droplets with absorbent synergy3With NO2, the flue gas after desulphurization denitration
From absorption tower, 9 top row goes out., through separator 10, the flue gas after separation is from the top of separator 10 for the flue gas gone out from 9 top row of absorption tower
Discharge, the solid material after separation enters the divergent segment on absorption tower 9 from second screw(-type) feeder of bottom 11 of separator 10, from
And realize making full use of for absorbent.
Gaseous oxidizing agent is O3、ClO2Deng.
Absorbent is calcium oxide or calcium hydroxide, or is sodio absorbent, or is magnesio absorbent.
Using the technique, desulfuration efficiency more than 95%, denitration efficiency more than 80% are capable of achieving.
Embodiment 3
A kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration, as shown in figure 3, including absorption tower 9, absorbing
The bottom of tower 9 is provided with the divergent segment that diameter gradually increases from the bottom to top, and divergent segment bottom is provided with flue gas inlet tube, the wall of divergent segment
Be provided with absorbent charging aperture, absorbent charging aperture connects absorbent storehouse 5 by the first screw(-type) feeder, in absorption tower 9 in
Bottom is provided with multilamellar atomizer 7, and the top on absorption tower 9 is provided with exhanst gas outlet;Wherein, the spout of multilamellar atomizer 7 to
Upper setting, multilamellar atomizer 7 are connected with technique water tank 2 by technique water pump 3, and multilamellar atomizer 7 is all connected with atomization pressure
Contracting air line, is provided with corona charging ring 8 above the spout of every layer of atomizer 7, corona charging ring 8 is supplied by high voltage power supply 6
Electricity.
The import connection air compressor 4 of atomization compressed air piping.Atomizer 7 is air atomizer spray nozzle.
The import connection high-pressure pump 12 of oxidant outlet pipeline.
Oxidant outlet pipeline is connected with flue gas inlet tube, and oxidant outlet pipeline and divergent segment and atomizer 7 it
Between absorption tower at connect.
Exhanst gas outlet connects separator 10.The solid matter outlet of separator 10 is by the second screw(-type) feeder 11 and absorption
Tower 9 connects.
Its technique is:
Gaseous oxidizer is directly delivered to the suction between flue gas inlet tube and divergent segment and atomizer 7 by high-pressure pump 12
Receive in tower 9, the fresh water (FW) in technique water tank 2 is delivered to atomizer 7 by technique water pump 3 to carry out atomization and form atomized drop, it is high
After voltage source 6 is to the power supply of corona charging ring 8, make the atomized drop through corona charging ring 8 charged;From the suction in absorbent storehouse 5
Agent the first is received Jing after screw(-type) feeder is weighed and mixed homogeneously with flue gas after absorbent charging aperture enters absorption tower, is existed with flue gas
Rise in absorption tower 9, the charged aerosolized liquid droplets being collectively forming with multilamellar atomizer 7 and corona charging ring 8 carry out it is multistage mix,
Absorbent is carried out efficient humidification activation by charged aerosolized liquid droplets, makes absorbent remove the most of SO in flue gas2, oxidant will be surplus
Remaining fraction SO2It is multistage with NO to be oxidized to SO respectively3With NO2Afterwards, then under charged aerosolized liquid droplets with absorbent synergy
Remove SO3With NO2, the flue gas after desulphurization denitration goes out from 9 top row of absorption tower.The flue gas gone out from 9 top row of absorption tower is through separator
10, the flue gas after separation is discharged from the top of separator 10, bottom second spiral of the solid material after separation from separator 10
Batcher 11 enters the divergent segment on absorption tower 9, so as to realize making full use of for absorbent.
Gaseous oxidizing agent is O3、ClO2Deng.
Absorbent is calcium oxide or calcium hydroxide, or is sodio absorbent, or is magnesio absorbent.
Using the technique, desulfuration efficiency more than 95%, denitration efficiency more than 80% are capable of achieving.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to invention protection domain
Restriction, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to
The various modifications or deformation made by creative work is paid are still within the scope of the present invention.
Claims (10)
1. a kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration, is characterized in that, including absorption tower, the absorption
The bottom of tower is provided with the divergent segment that diameter gradually increases from the bottom to top, and the divergent segment bottom is provided with flue gas inlet tube, it is described gradually
The wall for expanding section is provided with absorbent charging aperture, and the absorbent charging aperture connects absorbent storehouse, institute by the first screw(-type) feeder
State the middle and lower part in absorption tower and be provided with multilamellar atomizer, at the top of the absorption tower, be provided with exhanst gas outlet;Wherein, the multilamellar
The spout of atomizer sets up, and the multilamellar atomizer is connected with water tank by water pump, and multilamellar atomization
Nozzle is all connected with being atomized compressed air piping, and corona charging ring, the corona charging are provided with above the spout of every layer of atomizer
Ring is powered by high voltage power supply, and oxidant outlet pipeline is connected with water tank, or oxidant outlet pipeline and atomization compressed air hose
Road connects, or oxidant outlet pipeline is connected with absorption tower.
2. a kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration as claimed in claim 1, is characterized in that, institute
State the import connection air compressor of atomization compressed air piping;
The atomizer is air atomizer spray nozzle.
3. a kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration as claimed in claim 1, is characterized in that, institute
State oxidant outlet pipeline to be connected as with absorption tower:The oxidant outlet pipeline is connected with the flue gas inlet tube, while institute
State.
4. a kind of semi-dry desulfurization and denitrification integral device of charged oxidation collaboration as claimed in claim 1, is characterized in that, institute
State exhanst gas outlet connection separator;
The solid matter outlet of the separator is connected with absorption tower by the second screw(-type) feeder.
5. a kind of technique of 1,2 or 4 arbitrary described device desulphurization denitration of utilization claim, is characterized in that, oxidant is passed through
After mixing to water tank with water, Jing water pumps are delivered to atomizer and carry out atomization and form atomized drop, and high voltage power supply gives corona charging ring
After power supply, make the atomized drop through corona charging ring charged;The first screw(-type) feeders of absorbent Jing weigh to enter by absorbent
After material mouth is mixed homogeneously with flue gas after entering absorption tower, rise in absorption tower with flue gas, with multilamellar atomizer and corona lotus
The charged aerosolized liquid droplets that electric ring is collectively forming carry out multistage mixing, and absorbent is carried out efficient humidification activation by charged aerosolized liquid droplets,
Absorbent is made to remove the most of SO in flue gas2, oxidant is by remaining fraction SO2It is multistage with NO to be oxidized to SO respectively3With
NO2Afterwards, through charged aerosolized liquid droplets so as to removing SO3With NO2, then from absorption tower, top row goes out.
6. a kind of technique of 1,2 or 4 arbitrary described device desulphurization denitration of utilization claim, is characterized in that, by gaseous oxidizer
Be passed through to atomization compressed air piping mist is formed with being atomized after compressed air mixes to deliver to jointly atomizer with water and carry out atomization
Change drop, after high voltage power supply is powered to corona charging ring, make the atomized drop through corona charging ring charged;Absorbent Jing first
Screw(-type) feeder is weighed after being mixed homogeneously with flue gas after absorbent charging aperture enters absorption tower, with flue gas in the absorption tower on
Rise, the charged aerosolized liquid droplets being collectively forming with multilamellar atomizer and corona charging ring carry out it is multistage mix, charged aerosolized liquid droplets
Absorbent is carried out into efficient humidification activation, makes absorbent remove the most of SO in flue gas2, oxidant is by remaining fraction SO2
It is multistage with NO to be oxidized to SO respectively3With NO2Afterwards, through charged aerosolized liquid droplets so as to removing SO3With NO2, then from absorption tower top row
Go out.
7. a kind of technique of the arbitrary described device desulphurization denitration of utilization claim 1-4, is characterized in that, high-pressure pump is directly by gas
State oxidant is delivered to different parts in absorption tower, and the water in water tank is delivered to atomizer and carries out atomization formation atomization by water pump
Drop, after high voltage power supply is powered to corona charging ring, makes the atomized drop through corona charging ring charged;The first spiral shells of absorbent Jing
Rotation batcher is weighed after being mixed homogeneously with flue gas after absorbent charging aperture enters absorption tower, with flue gas in the absorption tower on
Rise, the charged aerosolized liquid droplets being collectively forming with multilamellar atomizer and corona charging ring carry out it is multistage mix, charged aerosolized liquid droplets
Absorbent is carried out into efficient humidification activation, makes absorbent remove the most of SO in flue gas2, oxidant is by remaining fraction SO2
It is multistage with NO to be oxidized to SO respectively3With NO2Afterwards, through charged aerosolized liquid droplets so as to removing SO3With NO2, then from absorption tower top row
Go out.
8. the technique of the desulphurization denitration as described in claim 5-7, is characterized in that, the absorbent is calcium-base absorbing agent, sodio
Absorbent or magnesio absorbent.
9. the technique of desulphurization denitration as claimed in claim 7, is characterized in that, gaseous oxidizer is directly delivered to by high-pressure pump
At absorption tower between the flue gas inlet tube and divergent segment and atomizer on absorption tower.
10. the technique of the desulphurization denitration as described in claim 5-7, is characterized in that, the flue gas gone out from absorption tower top row is passed through and divided
Flue gas after device, separation is discharged from the top of separator, and the solid material after separation is given from second spiral of bottom of separator
Material machine enters the divergent segment on absorption tower.
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CN108126510B (en) * | 2018-01-16 | 2024-01-26 | 邯郸学院 | Flue gas desulfurization and denitrification equipment |
CN109701382B (en) * | 2019-02-28 | 2022-05-17 | 兖矿集团有限公司 | Superfine powder dispersing and spraying system and processing method and application thereof |
CN110433628A (en) * | 2019-07-16 | 2019-11-12 | 华电电力科学研究院有限公司 | A kind of System and method for of the integrative coordinated removing of coal-fired flue-gas dirt sulphur nitre mercury |
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CN200991635Y (en) * | 2007-01-12 | 2007-12-19 | 大拇指环保科技集团(福建)有限公司 | Rotary charged spraying half-dry method desulfurizing device |
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