CN208512282U - A kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system - Google Patents
A kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system Download PDFInfo
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- CN208512282U CN208512282U CN201821058001.1U CN201821058001U CN208512282U CN 208512282 U CN208512282 U CN 208512282U CN 201821058001 U CN201821058001 U CN 201821058001U CN 208512282 U CN208512282 U CN 208512282U
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Abstract
The device of sulfur trioxide and NOx in the removing flue gas that the utility model relates to a kind of with integrated spraying system, including boiler, boiler economizer, flue, SCR reactor, integrated spraying system, integrated spraying system includes for providing the air intake assembly of gas medium, for adding the first feeding assembly of gaseous reducing agent, for adding the second feeding assembly of alkaline powder absorbent, for by the fluidised fluidized bed type allocation component of alkaline powder absorbent, for mixed fluidised alkaline powder absorbent and gaseous reducing agent to be sprayed into the integrated ejection assemblies of flue.The utility model is by mixing alkaline powder absorbent fluidization and with gaseous reducing agent to form two-phase mixtures state, flue is uniformly sprayed by integrated ejection assemblies again, alkaline powder absorbent and gaseous reducing agent are sufficiently reacted with flue gas, so as to the sulfur trioxide and NOx being removed in depth in flue gas, there is applicability for boiler, there is good environmental protection, economic benefit and broad application prospect.
Description
Technical field
The device of sulfur trioxide and NOx in the removing flue gas that the utility model relates to a kind of with integrated spraying system.
Background technique
SCR:Selective Catalytic Reduction, abbreviation SCR.SCR denitration technology refers at 280~420 DEG C
In range, reducing agent (such as NH3, urea and ammonium hydroxide etc.) under the action of catalyst, " selective " it is anti-with the NOx in flue gas
It answers, generates free of contamination N2And H2The NOx abatement technology of O.
In order to control the NOx and SO of fire coal boiler fume discharge3Pollutant mainly takes ammonia process to restore SCR denitration at present
De- SO is absorbed with base3Technology.These devices in application process, mainly encounter following problem:
Ammonia process restores SCR denitration: ammonia is ejected into flue gas by SCR denitration by ammonia-spraying grid AIG, in catalyst action
Under, NO is reduced to nitrogen and water.It is less than 50mg/m in control NOx3Operational process in, influenced by unit operating load,
NOx concentration in the flue gas of the upstream ammonia-spraying grid AIG is unevenly distributed and its regularity of distribution random groups load variations, this is for each
The fixed ammonia-spraying grid AIG of pipe flow valve aperture easily causes NOx distribution and NH in flue gas3Distribution mismatches, and catalyst enters
The NH of mouth3/ NO molar ratio is unevenly distributed, and is generated ammonia slip concentration peak value in regional area, is aggravated the air preheater in denitration downstream
Etc. equipment ammonium hydrogen sulfate block influence.
Base absorbs de- SO3Technology: SO in flue gas3It is removed using base absorbent, base absorbent is with solution or powder
Mode is sprayed into flue by spray gun, with the SO in flue gas3Reaction.The prior art is " in a kind of lye jet atomization removing flue gas
The device of sulfur trioxide " (application number: 201610384872.1) by twin spray gun in conjunction with spoiler, in flue cross section
Arrange more spray guns, in lye atomized spray to flue gas, the unit big with load variations for flue gas flow field distribution and rule,
The adaptability of the injection apparatus is lower；The prior art " a kind of boiler smoke sulfur trioxide removing means " (application number:
201710099614.3) it is connected by spraying main pipe with multiple branch pipes, every branch pipe sets multiple equal flow nozzles, by ground caustic with strength
Mode of movement sprays into flue gas, but cannot achieve the uniform of base sorbent injection amount between branch pipe, between branch pipe top nozzle
Property.
In fire coal boiler fume tapping equipment, if SCR denitration and SO3Removing means respectively sets a set of sorbent injection system,
The complexity of unit equipment system is increased, and there are absorbents to mix with flue gas homogeneity question for two sets of injection apparatus.Needle
Solid particle and NH are carried to above-mentioned process gas3The problem of with flue gas mixing uneven distribution, uses for reference fluidization gas-solid multiphase
Flow present characteristics of liquids (Fig. 1), the utility model proposes it is a kind of with can be realized gas-solid multiphase flow evenly distribute be
Bulk cargo is set.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of spraying systems and alkali that gaseous reducing agent is taken off to NOx
Property powder absorbent take off the device of sulfur trioxide and NOx in the removing flue gas that both spraying system of sulfur trioxide merges.
To achieve the above object, the utility model adopts the following technical scheme:
One of the utility model is designed to provide three oxidation in a kind of removing flue gas with integrated spraying system
The device of sulphur and NOx, the boiler economizer being connected including boiler, one end with the boiler save coal with the boiler
Flue that the other end of device is connected, the SCR reactor being connected by the flue with the boiler economizer, institute
The device stated further include for by alkaline powder absorbent fluidization and by the described fluidised alkaline powder absorbent it is gentle
The integrated spraying system of the flue is sprayed into after the mixing of body reducing agent, the integration spraying system includes for providing gas
The air intake assembly of body medium is connected for adding the gas into the air intake assembly also with the air intake assembly
First feeding assembly of former agent is connected for adding the alkalinity into the air intake assembly with the air intake assembly
Second feeding assembly of powder absorbent is connected for by the alkaline powder absorbent fluidised form with the air intake assembly
The fluidized bed type allocation component of change, be connected with the fluidized bed type allocation component and the flue is used to mix respectively
The fluidised alkaline powder absorbent and the gaseous reducing agent afterwards sprays into the integration injection of the flue
Component.
Specifically, the fluidized bed type allocation component includes being connected with the air intake assembly with first through hole
Air distribution plate, the metal layers of balls being arranged on the air distribution plate, the first honeycomb screen for being arranged in above the metal layers of balls
Grid, the fluidized bed ontology being arranged in above first flow straightening grid, the integrated ejection assemblies and the fluidisation
Bed ontology is connected.
More specifically, the fluidized bed type allocation component further includes shell, the case top is arranged in and has
The top cover of second through-hole, the air distribution plate, the metal layers of balls, first flow straightening grid, the fluidized bed sheet
Body is arranged in the shell.
Preferably, the diameter of the metal ball of the metal layers of balls is greater than the diameter of the first through hole.
It is further preferred that the diameter of the metal ball is 9-11mm, the diameter of the first through hole is 4-6mm.
Preferably, the first through hole has multiple.
Preferably, the diameter of second through-hole is 28-32mm.
Preferably, second through-hole has 20-50.
Preferably, the metal layers of balls has multilayer；It is further preferred that the metal layers of balls has two layers.
Preferably, the internal diameter of the fluidized bed type allocation component is 800-1500mm, a height of 200-500mm.
Preferably, first flow straightening grid is tiny trellis flow straightening grid.
It is further preferred that the height of first flow straightening grid is 13-17mm, aperture 8-12mm.
Specifically, the air intake assembly includes that upper end is connected and under upper width with the fluidized bed type allocation component
Narrow divergent segment, the conveyance conduit being connected with the lower end of the divergent segment, first feeding assembly and described
Second feeding assembly is connected with the conveyance conduit respectively.
Preferably, the conveyance conduit includes the first pipe that one end is connected with the lower end of the divergent segment
The venturi that road, one end are connected with the other end of the first pipe and are connected with second feeding assembly
Pipe, one end be connected with the Venturi tube and be connected with first feeding assembly second pipe, be arranged exist
Mixer in the first pipe.
It is further preferred that the material of the conveyance conduit is stainless steel.
It is further preferred that the diameter of the first pipe is 0.15-0.25m.
It is further preferred that the diameter of the second pipe is 0.15-0.25m.
It is further preferred that the mixer is vortex mixer, the vortex mixer can allow alkaline powder
Absorbent, gaseous reducing agent and cold wind can be uniformly mixed.
It is further preferred that the device further includes the air preheat that the outlet with the SCR reactor is connected
Device, the other end of the second pipe are connected with the outlet of the cold air duct or dilution air of the air preheater
It is logical.
In the utility model, it is connected with the second pipe for providing can also be and the second pipe for gas medium
The air pump that road is connected, the cold air duct or dilution wind of second pipe and the air preheater that the utility model uses
Machine outlet is connected, and the more energy-saving and emission-reduction of this mode, are preferred embodiments.
Preferably, the air intake assembly further includes the stream grid and the second honeycomb screen being arranged in the divergent segment
Grid.
In the utility model, the setting of stream grid and the second flow straightening grid, so that the gas exported from divergent segment is situated between
The mixture of matter, gaseous reducing agent and alkaline powder absorbent is uniformly distributed, and air-flow vertical upflow.
Specifically, the integrated ejection assemblies include that one end is connected and separately with the fluidized bed type allocation component
Injection pipe that one end is plugged in the flue, the nozzle that the injection pipe one end is arranged in, the nozzle are located at
In the flue.
Preferably, the injection pipe has more, the one end of injection pipe described in every be provided with one described in spray
Mouth, multiple nozzles are evenly arranged in the flue cross section in grid type.
It is further preferred that depth of multiple nozzles in the flue is different.
Preferably, the mixed airflow of the fluidised alkaline absorbent and the gaseous reducing agent is from the spray
The airflow direction that mouth sprays is identical as the airflow direction of flue gas in the flue.
Preferably, third valve is additionally provided on the injection pipe.
It is further preferred that the third valve is butterfly valve.
Specifically, the integrated ejection assemblies further include the cyclone being arranged on the nozzle.
Preferably, the nozzle is spiral nozzle.
Specifically, the device further include be arranged in the flue and be located at the integrated ejection assemblies with
Wide flue-pipe type flue gas mixer (CN 206587601U) between the SCR reactor.
Specifically, the integrated spraying system further includes being arranged on first feeding assembly to be used to control
First valve of the gaseous reducing agent flow velocity is arranged on second feeding assembly for controlling the alkaline powder
Second valve of the addition content of body absorbent.
Preferably, first feeding assembly is gas syringe.
Preferably, second feeding assembly is screw(-type) feeder.
Specifically, the section of flue described in the horizontal segment between the boiler economizer and the SCR reactor
For 3m ╳ 8m.
Specifically, the integrated spraying system further includes the powder storage being arranged in above second feeding assembly
Storage.
Preferably, the gaseous reducing agent is ammonia.
Preferably, the alkaline powder absorbent is Ca (OH)2Powder.
It is further preferred that the granularity of the alkaline powder absorbent is 80-100 mesh.
It is further preferred that the partial size of the alkaline powder absorbent is 15-178 μm.
Preferably, the alkaline powder absorbent and SO3Molar ratio be 1.4-1.6:1；It is further preferred that described
Alkaline powder absorbent and SO3Molar ratio be 1.5:1.
Due to the implementation of above technical scheme, the utility model has the advantages that compared with prior art
The utility model is by mixing alkaline powder absorbent fluidization and with gaseous reducing agent to form stream
The two-phase mixtures state of state, and by integrated ejection assemblies, flue is uniformly sprayed into, so that alkaline powder absorbent and gas
Reducing agent can sufficiently be reacted with flue gas, so as to which the SO in flue gas is removed in depth3With NOx, there is applicability for boiler,
There are good environmental protection, economic benefit and broad application prospect.
Detailed description of the invention
Fig. 1 is the characteristics of liquids schematic diagram that fluidization gas-solid multiphase flow is presented；
Fig. 2 is the schematic diagram of the device of the utility model；
Fig. 3 is the partial enlarged view of Fig. 2；
Wherein: 11, boiler；12, boiler economizer；13, flue；14, the second feeding assembly；15, powder storage warehouse；16,
First feeding assembly；2, wide flue-pipe type flue gas mixer；3, air preheater；4, SCR reactor；51, a cold air duct；61,
Second pipe；611, divergent segment；612, first pipe；62, Venturi tube；63, mixer；64, grid is flowed；65, second is whole
Flow grid；71, air distribution plate；72, metal layers of balls；73, the first flow straightening grid；74, fluidized bed ontology；75, top cover；76, shell；
81, injection pipe；82, nozzle.
Specific embodiment
The utility model, but the guarantor being not intended to limit the utility model will be further described by specific embodiment below
Protect range.Those skilled in the art can be made improvements to preparation method and using instrument within the scope of the claims, these improvement
Also it should be regarded as the protection scope of the utility model.Therefore, the protection scope of the utility model patent should be with appended claims
It is quasi-.
Device
As shown in Fig. 2, a kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system, packet
It includes boiler 11, the boiler economizer 12 that one end is connected with boiler 11, be connected with the other end of boiler economizer 12
Flue 13, is connected with the outlet of SCR reactor 4 at the SCR reactor 4 being connected by flue 13 with boiler economizer 12
Air preheater 3, for by alkaline powder absorbent fluidization and by fluidised alkaline powder absorbent and gaseous reducing agent
Integrated spraying system, the wide flue-pipe type flue gas mixer 2 of flue 13 are sprayed into after mixing.
Integrated spraying system include for the air intake assembly of gas medium is provided, be connected with air intake assembly for into
The first feeding assembly 16 of gaseous reducing agent is added in pneumatic module, is connected with air intake assembly for adding alkali into air intake assembly
Second feeding assembly 14 of property powder absorbent is connected for by the alkaline fluidised fluidisation of powder absorbent with air intake assembly
Bed allocation component, be connected with fluidized bed type allocation component and flue 13 is used for mixed fluidised alkaline powder respectively
Body absorbent and gaseous reducing agent spray into the powder of the integrated ejection assemblies of flue 13, the top that the second feeding assembly 14 is arranged in
Body storage warehouse 15.
As shown in Fig. 3, air intake assembly include upper end be connected with fluidized bed type allocation component and it is wide at the top and narrow at the bottom gradually
The conveyance conduit for expanding section 611, being connected with the lower end of divergent segment 611, the first feeding assembly 16 and the second feeding assembly 14 divide
It is not connected with conveyance conduit.In the utility model, the material of conveyance conduit is stainless steel.
Conveyance conduit includes first pipe 612, the one end and first that one end is connected with the lower end of divergent segment 611
Venturi tube 62, one end and the Venturi tube that the other end of pipeline 612 is connected and is connected with the second feeding assembly 14
62 are connected and the second pipe 61 being connected with the first feeding assembly 16, the mixer 63 being arranged in first pipe 612.It is excellent
Selection of land, the diameter of first pipe 612 are 0.15-0.25m, and the diameter of second pipe 61 is 0.15-0.25m.
The downstream of Venturi tube 62 is arranged in mixer 63, so as to gentle to alkaline powder absorbent, gaseous reducing agent
Body medium is mixed, so that more uniform.In the utility model, mixer 63 is vortex mixer.
It is connected with air intake assembly for providing the cold air duct that can be air pump, air preheater 3 of gas medium
The dilution air of 51 either air preheaters 3 exports.In the utility model, using the one end and sky of second pipe 61
Cold air duct 51 of air preheater 3 is connected for providing gas medium, thus more energy-saving and emission-reduction.
In order to allow the mixture of the cold wind of 611 outlet of divergent segment, gaseous reducing agent and alkaline powder absorbent
Can be uniformly distributed and allow air-flow can vertical ascent, air intake assembly further includes the stream grid 64 being arranged in divergent segment 611
With the second flow straightening grid 65.
In order to preferably control the flow velocity of gaseous reducing agent, integrated spraying system further includes setting in the first charging
The first valve on component 16, in order to control the addition content and speed of alkaline powder absorbent, integrated spraying system
It further include the second valve being arranged on the second feeding assembly 14.
In the utility model, the first feeding assembly 16 is gas syringe, and the second feeding assembly 14 is screw(-type) feeder.
As shown in Fig. 3, fluidized bed type allocation component includes that having of being connected with the upper end of divergent segment 611 is first logical
The air distribution plate 71 in hole, the metal layers of balls 72 being arranged on air distribution plate 71, the first flow straightening grid that 72 top of metal layers of balls is set
73, the fluidized bed ontology 74 of 73 top of the first flow straightening grid is set, and integrated ejection assemblies are connected with fluidized bed ontology 74.
Fluidized bed type allocation component further includes shell 76, the top that shell 76 is arranged in and the top cover with the second through-hole
75.Air distribution plate 71, metal layers of balls 72, the first flow straightening grid 73, fluidized bed ontology 74 are arranged in shell 76.
The diameter of the metal ball of metal layers of balls 72 is greater than the diameter of first through hole.Metal layers of balls 72 has multilayer, the first rectification
Grid 73 is tiny trellis flow straightening grid, and first through hole has multiple, and the second through-hole has multiple.The diameter of metal ball is 9-11mm,
The height of first flow straightening grid 73 is 13-17mm, aperture 8-12mm, and the diameter of first through hole is 4-6mm, the second through-hole it is straight
Diameter is 28-32mm, and the second through-hole has 20-50, and the internal diameter of fluidized bed type allocation component is 800-1500mm, a height of 200-
500mm。
In the present embodiment, the internal diameter of fluidized bed type allocation component is 900mm, a height of 500mm.Metal layers of balls 72 has two layers,
The diameter of metal ball is 10mm, and the height of the first flow straightening grid 73 is 15mm, aperture 10mm, and the diameter of first through hole is 5mm,
The diameter of second through-hole is to have 24 the second through-holes on 30mm and top cover 75.
As shown in attached drawing 2,3, integrated ejection assemblies include that one end is connected and the other end is plugged with fluidized bed ontology 74
Injection pipe 81 in flue 13, the nozzle 82 that 81 one end of injection pipe is arranged in, nozzle 82 are located in flue 13.
In order to allow fluidised alkaline absorbent and gaseous reducing agent sufficiently to react with flue gas, stream that nozzle 82 exports
The direction of motion of the mixed airflow of the alkaline absorbent and gaseous reducing agent of state is identical as the direction of motion of flue gas, injection pipe 81
There are more, the one end of every injection pipe 81 is provided with a nozzle 82, and multiple nozzles 82 are in grid type on 13 section of flue
It is evenly arranged.Preferably, integrated ejection assemblies further include the cyclone being arranged on nozzle 82.In the present embodiment, nozzle is
Spiral nozzle, injection pipe 81 have 24, and depth of the nozzle 82 on 24 injection pipes 81 in flue 13 is different.In order to more
Flow is controlled well, and third valve is additionally provided on injection pipe 81.In the present embodiment, third valve is butterfly valve.
In the present embodiment, the section of the horizontal segment flue 13 between boiler economizer 12 and SCR reactor 4 is 3m ╳ 8m.
In order to reinforce flue gas, NOx, SO in wide 13 range of flue3, fluidised alkaline powder absorbent, gaseous reducing agent
Mixing, device further includes the wide flue-pipe type flue gas mixer 2 (CN 206587601U) being arranged in horizontal segment flue 13, wide cigarette
The downstream of the one end of channel type flue gas mixer 2 between nozzle 82 and SCR reactor 4 and positioned at injection pipe 81, so as to
The heterogeneous chemical reaction that stoichiometric ratio is evenly distributed is realized on the section of flue 13.
It is as follows using the method for sulfur trioxide and NOx in device as above processing flue gas:
In the present embodiment, gaseous reducing agent is ammonia.Alkaline powder absorbent is Ca (OH)2Powder, granularity 80-100
Mesh, partial size are 15-178 μm.Ca(OH)2Powder and SO3Molar ratio be 1.4-1.6:1, it is preferable that Ca (OH)2Powder and SO3
Molar ratio be 1.5:1.
Ca(OH)2Powder and ammonia pass through air intake assembly and are transported to fluidized bed type allocation component, become fluidised Ca
(OH)2The mixture of powder and ammonia, then flue 13 is sprayed into conjunction with the flue gas in flue 13 by integrated ejection assemblies, then is passed through
Wide flue-pipe type flue gas mixer 2 is by flue gas, NOx, SO3, fluidised Ca (OH)2Powder, ammonia further mix, further
Promote reaction, using SCR reactor 4, ultimate depth is stripped of SO3With NOx.
Embodiment
Certain 300MW coal unit sets 2 SCR reactors 4, and under rated load, 6% oxygen, 11 exiting flue gas amount of boiler is
1000000m3/ h, temperature are 350 DEG C, NOx concentration 400mg/m3, SO2Concentration is 3000mg/m3, 11 inside of boiler and SCR are anti-
Answer SO in the flue gas in device 42/SO3Conversion ratio is respectively 0.8% and 1.0%.It is less than 40mg/m for control NOx emission concentration3With
Air preheater 3 exports SO3Concentration is less than 10mg/m3, SO in the removing flue gas of design integration spraying system3With the dress of NOx
It sets.
1, mass balance
According to plan boundary condition and performance indicator requirement, calculating ammonia consumption is 133kg/h, the dilution of 5% volumetric concentration
Air quantity is 3506m3The spray ammonia dilution air quantity of/h, every 4 entrance of SCR reactor are 1753m3/h。
Consider the SO in 11 inside of boiler and SCR reactor 42/SO3Conversion, is calculated the SO of 3 entrance of air preheater3
Concentration is 67.5mg/m3。Ca(OH)2Powder jetting amount is 101.8kg/h, and the amount of injection of every 4 entrance of side SCR reactor is
50.9kg/h。
2, air intake assembly
For the cold wind that a cold air duct 51 of 3 entrance of air preheater extracts pressure 10kPa, 30 DEG C of temperature bases are considered
Standard, the air velocity in conveyance conduit are 15.7m/s.
3, the first feeding assembly 16, the second feeding assembly 14
The ammonia of pressure about 0.2MPa injects second pipe 61, the Ca (OH) in powder storage warehouse 152Powder is given through spiral
Material machine injects the Venturi tube 62 of conveyance conduit, sets vortex mixer in 62 downstream tube of Venturi tube, makes Ca (OH)2Powder,
Ammonia and cold wind uniformly mix.Ammonia passes through the first valve controlling flow amount, Ca (OH)2Powder passes through the second valve of screw(-type) feeder
Door control revolving speed and flow.
4, fluidized bed type allocation component
Ca(OH)2The critical fludization velocity of powder is 0.016-0.022m/s, sinking speed 0.844-1.026m/s.Stream
The air velocity for changing bed allocation component is 0.78m/s.
5, integrated ejection assemblies
The section of horizontal segment flue 13 between the outlet of boiler economizer 12 and SCR reactor 4 is 3m × 8m, vertical
24 injection pipes 81, the mixed airflow speed about 31m/s that nozzle 82 exports are evenly arranged on section.
7, wide flue-pipe type flue gas mixer 2
Wide flue-pipe type flue gas mixer 2 is arranged in 82 downstream of nozzle in flue 13, strengthens 4 throat width of SCR reactor
Large-scale flue gas mixing, improves flue gas, NOx, NH in about 15-20m flue 133、SO3、Ca(OH)2The distributing homogeneity of powder.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. the device of sulfur trioxide and NOx in a kind of removing flue gas with integrated spraying system, including boiler (11), one end
Boiler economizer (12) that portion is connected with the boiler (11) is connected with the other end of the boiler economizer (12)
Logical flue (13), the SCR reactor (4) being connected by the flue (13) with the boiler economizer (12),
Be characterized in that: the device further includes for by alkaline powder absorbent fluidization and by the described fluidised alkaline powder
The integrated spraying system of the flue (13), the integration spraying system are sprayed into after absorbent and gaseous reducing agent mixing
Including for providing gas medium air intake assembly, be connected for adding into the air intake assembly with the air intake assembly
Add the first feeding assembly (16) of the gaseous reducing agent, be connected with the air intake assembly for the air inlet group
The second feeding assembly (14) of the alkaline powder absorbent is added in part, is connected with the air intake assembly for by institute
The fluidised fluidized bed type allocation component of alkaline powder absorbent stated, respectively with the fluidized bed type allocation component and described
Flue (13) be connected for by the mixed described fluidised alkaline powder absorbent and the gaseous reducing agent
Spray into the integrated ejection assemblies of the flue (13).
2. the apparatus according to claim 1, it is characterised in that: the fluidized bed type allocation component include with it is described into
The air distribution plate (71) with first through hole that pneumatic module is connected, the metal layers of balls being arranged on the air distribution plate (71)
(72), the first flow straightening grid (73) above the metal layers of balls (72) is set, first flow straightening grid is set
(73) the fluidized bed ontology (74) above, the integrated ejection assemblies are connected with the fluidized bed ontology (74).
3. the apparatus of claim 2, it is characterised in that: the diameter of the metal ball of the metal layers of balls (72) is greater than
The diameter of the first through hole.
4. the apparatus according to claim 1, it is characterised in that: the air intake assembly includes upper end and the fluidisation
Bed allocation component is connected and divergent segment (611) wide at the top and narrow at the bottom, is connected with the lower end of the divergent segment (611)
Conveyance conduit, first feeding assembly (16) and second feeding assembly (14) respectively with the conveyance conduit phase
Connection.
5. device according to claim 4, it is characterised in that: the conveyance conduit includes one end and the flaring
First pipe (612), the other end phase of one end and the first pipe (612) that the lower end of section (611) is connected
Connection and the Venturi tube (62) being connected with second feeding assembly (14), one end and the Venturi tube (62)
Be connected and be connected with first feeding assembly (16) second pipe (61), the first pipe is set
(612) mixer (63) in.
6. device according to claim 5, it is characterised in that: the device further includes and the SCR reactor (4)
The air preheater (3) that is connected of outlet, the other end of the second pipe (61) and the air preheater (3)
A cold air duct (51) or dilution air outlet be connected.
7. device according to claim 4, it is characterised in that: the air intake assembly further includes that the flaring is arranged in
Stream grid (64) and the second flow straightening grid (65) in section (611).
8. the apparatus according to claim 1, it is characterised in that: the integrated ejection assemblies include one end and described
Fluidized bed type allocation component is connected and the other end be plugged in the inner injection pipe (81) of the flue (13), be arranged in it is described
The nozzle (82) of injection pipe (81) one end, the nozzle (82) are located in the flue (13).
9. device according to claim 8, it is characterised in that: the injection pipe (81) has more, spray described in every
Penetrate pipe (81) one end be provided with one described in nozzle (82), multiple nozzles (82) cut in the flue (13)
It is evenly arranged on face in grid type.
10. the apparatus according to claim 1, it is characterised in that: the device further includes that the flue is arranged in
(13) the interior and wide flue-pipe type flue gas mixer between the integrated ejection assemblies and the SCR reactor (4)
(2)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058001.1U CN208512282U (en) | 2018-07-05 | 2018-07-05 | A kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058001.1U CN208512282U (en) | 2018-07-05 | 2018-07-05 | A kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system |
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| CN208512282U true CN208512282U (en) | 2019-02-19 |
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| CN201821058001.1U Active CN208512282U (en) | 2018-07-05 | 2018-07-05 | A kind of device for removing sulfur trioxide and NOx in flue gas with integrated spraying system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108607362A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of device removing sulfur trioxide and NOx in flue gas with integrated spraying system |
| CN111167274A (en) * | 2020-01-19 | 2020-05-19 | 中南大学 | Method for removing sulfur trioxide from smelting flue gas and removing device thereof |
-
2018
- 2018-07-05 CN CN201821058001.1U patent/CN208512282U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108607362A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of device removing sulfur trioxide and NOx in flue gas with integrated spraying system |
| CN108607362B (en) * | 2018-07-05 | 2023-09-19 | 苏州西热节能环保技术有限公司 | Device with integrated injection system for removing sulfur trioxide and NOx in flue gas |
| CN111167274A (en) * | 2020-01-19 | 2020-05-19 | 中南大学 | Method for removing sulfur trioxide from smelting flue gas and removing device thereof |
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