CN109045997A - Dry denitration system and technique - Google Patents
Dry denitration system and technique Download PDFInfo
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- CN109045997A CN109045997A CN201811254505.5A CN201811254505A CN109045997A CN 109045997 A CN109045997 A CN 109045997A CN 201811254505 A CN201811254505 A CN 201811254505A CN 109045997 A CN109045997 A CN 109045997A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 156
- 239000000203 mixture Substances 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 238000005452 bending Methods 0.000 claims description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 13
- 239000004202 carbamide Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 210000000038 chest Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004062 sedimentation Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
This application involves Dry denitration technical fields, and more particularly, to a kind of Dry denitration system and technique, Dry denitration system includes: to wind devices, material wind mixing apparatus and storage equipment；Expect that wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and conveyance conduit；Storage equipment is for storing and providing material to double-screw feeder；The feed pipe of air amplifying device extends along vertical direction；Feed pipe, which offers, gives wind gap；The input end of feed pipe is connected with double-screw feeder, and the input end of feed pipe is used to for the material that double-screw feeder exports being delivered to the inside of feed pipe along vertical direction；The outlet end of feed pipe is connected with conveyance conduit, and for exporting the material wind mixture in feed pipe to conveyance conduit along vertical direction, conveyance conduit is connected to burner hearth for the outlet end of feed pipe.As it can be seen that the present apparatus realizes the uniform mixing and quickly conveying of material wind mixture, material sedimentation is avoided, denitration effect is improved.
Description
Technical field
This application involves Dry denitration technical fields, more particularly, to a kind of Dry denitration system and technique.
Background technique
Currently, being mostly blanking along vertical direction (urea), horizontal blast, water when material wind mixes in Dry denitration technique
Square to wind be mingled with material and go out along horizontal feed, and by pipeline to boiler, urea and horizontal gas flow are only
It is quick of short duration contact, the form of bellows chamber material can not be formed, so that material is easy deposition, and then leads to not to form uniform material wind
Mixture, denitration effect is poor, in addition, storage compartment is not present in existing Dry denitration system, the materials such as urea are arbitrarily at random to be put
It sets, pollutes environment.
Summary of the invention
The application's is designed to provide a kind of Dry denitration system and technique, to solve dry method existing in the prior art
In denitrating technique material wind, the mixture of bellows chamber material form can not be formed, urea is easy deposition, and then causes to expect that wind mixture is uneven
Even, denitration effect is poor, in addition, the technical issues of storage compartment is not present in existing Dry denitration system.
This application provides a kind of Dry denitration systems, comprising: to wind devices, material wind mixing apparatus and storage equipment；
Wherein, the material wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and conveyance conduit；Institute
Storage equipment is stated for providing material to the double-screw feeder；The air amplifying device includes shell and feed pipe；
The feed pipe extends along vertical direction；The shell is located at the outside of the feed pipe, and the shell be provided with into
Air port, the air inlet are connected with described to wind devices；The feed pipe, which offers, gives wind gap, and described to wind gap
It is described to be used to convey air into the feed pipe to wind gap in the shell；The input end of the feed pipe with it is described
Double-screw feeder is connected, and the material that the input end of the feed pipe is used to export the double-screw feeder is along vertical
Direction is delivered to the inside of the feed pipe；The outlet end of the feed pipe is connected with the conveyance conduit, the feed pipe
Outlet end for being exported the material wind mixture in the feed pipe to the conveyance conduit along vertical direction；It is described defeated
Send pipeline for being connected to burner hearth.
In the above-mentioned technical solutions, further, described to give wind gap for along the inclination for forming acute angle with vertical direction
Tuyere structure, and described be used to the feed pipe give wind diagonally downward to wind gap.
In any of the above-described technical solution, further, the conveyance conduit includes bending segment pipe and straightway pipe
Road；The bending segment pipe and the straight line segment pipe are sequentially connected logical；One end of the bending segment pipe and the air
Amplifying device is connected, and the bending segment pipe is arcuate structure, and the straight line segment pipe is far from the bending segment pipe
One end is connected with the burner hearth by pipeline.
In any of the above-described technical solution, further, pass through blower between the storage equipment and the material wind process
It is connected with the burner hearth.
In any of the above-described technical solution, further, the blower includes the first blower and the second blower；Wherein, institute
It states on the first blower is arranged between the storing, and first blower is connected with the inside between the storing；Described second
On blower is arranged between the material wind process, and it is connected between second blower and the material wind process.
In any of the above-described technical solution, further, the Dry denitration system further includes detection device and control
Equipment；Wherein, the detection device, the control equipment and the material wind mixing apparatus are sequentially connected and connect, and the detection is set
It is standby to be also connected with the burner hearth.
In any of the above-described technical solution, further, the material wind mixing apparatus further includes between expecting wind process and pacifying
Loading board；Wherein, the mounting plate setting is in the material wind process, and the mounting plate is provided with mounting hole；Double spiral shells
Revolve feeder setting in the mounting hole.
In any of the above-described technical solution, further, the storage equipment includes between storing, drier and bracket；
Wherein, the drier and the bracket are arranged in the storing, and the drier is arranged between the storing
Inner sidewall on, the bracket is arranged on the bottom face between the storing.
In any of the above-described technical solution, further, it is described to wind devices include between wind, exhaust fan and filtering
Net；Wherein, the exhaust fan setting is given in wind described, and the air inlet phase of the air outlet of the exhaust fan and the shell
Connection；It is described to ventilation opening is offered between wind, the filter screen is removably disposed in the ventilation opening.
Present invention also provides a kind of Dry denitration techniques, comprising the following steps:
It is set to the feed pipe transport urea of air amplifying device to wind along direction from the top down through double-screw feeder
Standby to convey air to the feed pipe of the air amplifying device, the urea is mixed to form in the feed pipe with the air
The mixture of bellows chamber material form, and move downwardly to conveyance conduit；
The mixture forms uniform material wind mixture in the conveyance conduit, then the material wind mixture is conveyed
To burner hearth, the material wind mixture in the burner hearth nitride and sulfide react, carry out denitration process.
Compared with prior art, the application has the beneficial effect that
Dry denitration system provided by the present application, double-screw feeder are used to convey material to feed pipe, and material is along perpendicular
Histogram enters in feed pipe to from input end, while conveying swiftly flowing air, high speed to the air inlet of shell to wind devices
Air-flow is accumulated in shell, and then high-speed flow, by the inside to wind gap inflow feed pipe, high-speed flow is adsorbed onto side
On wall, high-speed flow leads to the generation of center area of low pressure during flowing through side wall, and material is in negative pressure and self gravity
It under effect, moves down, and is sufficiently mixed in feed pipe with high-speed flow, form the form of wind wrapper, facilitate high speed
Air-flow drives material high-speed mobile, and material will not settle, and material will not be bonded on the tube wall of feed pipe, bellows chamber material accelerate to
Lower movement, finally exports out of discharge port along vertical direction, is delivered in boiler using conveyance conduit, and the shape in pipeline
At uniform material wind mixture, it is uniform for guaranteeing to spray into boiler, since the concentration of material wind mixture is higher, transfer efficiency
Height, denitration effect are more preferable.In addition, storage equipment is for storing material, and can will be in storage equipment by artificial or machine
Material is transported at double-screw feeder, and then provides material to double-screw feeder.
Specifically, the course of work of this Dry denitration system is that artificial or machine conveys the material in storage equipment
Into double-screw feeder, material is conveyed to the feed pipe of air amplifying device, at the same time, air by double-screw feeder again
The air inlet of the shell of amplifying device blasts high-speed flow, and high-speed flow to wind gap by entering in feed pipe, high speed
Air-flow is adsorbed on side wall, and high-speed flow leads to the generation of center area of low pressure during flowing through side wall, material negative pressure with
And under the action of self gravity, move down, and be sufficiently mixed in feed pipe with high-speed flow, forms the shape of wind wrapper
Formula, bellows chamber material sharp downward movement again, and it is delivered to boiler by conveyance conduit, and uniform material wind mixing is formed in pipeline
Object finally carries out denitration process being injected into boiler.
As it can be seen that this Dry denitration system has to wind devices, expects that wind mixing apparatus and storage equipment, storage equipment can
Material is supplied to the feed pipe of the air amplifying device of material wind mixing apparatus, high speed gas can be provided to feed pipe to wind devices
Stream, since the inside of venturi principle feed pipe generates negative pressuren zone, under material is quick under the action of negative pressure and self gravity
It drops into feed pipe, and is mixed with high-speed flow, form the mixture of bellows chamber material form, material will not generate sedimentation, bellows chamber material
The mixture of form is along outputting material straight down, with running inside pipeline, will form uniform material wind mixture, sprays into
It is uniformly, to improve denitration efficiency when boiler.
Dry denitration technique provided by the present application, including Dry denitration system described above, material is along vertical direction
It is transported in feed pipe, is sufficiently mixed with swiftly flowing air, form the mixture of bellows chamber material form, it is heavy that material will not generate
Drop, the mixture of bellows chamber material form, with running inside pipeline, it is mixed to will form uniform material wind along outputting material straight down
Object is closed, is uniformly, to improve denitration efficiency when spraying into boiler.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the application specific embodiment or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the application, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of Dry denitration system provided by the embodiments of the present application；
Fig. 2 is the another structural schematic diagram of Dry denitration system provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram that wind mixing apparatus is expected in part provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram provided by the embodiments of the present application to wind devices；
Fig. 5 is the flow chart of Dry denitration technique provided by the embodiments of the present application.
Appended drawing reference:
1- is to wind devices, and 11- is between wind, 12- exhaust fan, 13- filter screen, and 2- expects wind mixing apparatus, 21- double helix feeding
Machine, 22- air amplifying device, 221- shell, 2211- air inlet, 222- feed pipe, 2221- upper feed pipe are fed under 2222-
Pipe, 2223- give wind gap, 23- conveyance conduit, and 231- is bent segment pipe, 232- straight line segment pipe, 3- storage equipment, 4- detection
Equipment, 5- control equipment, 6- blower, the first blower of 61-, the second blower of 62-, 7- burner hearth.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the attached drawing to the application, it is clear that described implementation
Example is some embodiments of the present application, instead of all the embodiments.
The component of the embodiment of the present application for usually describing and showing in attached drawing here can be with a variety of different configurations
To arrange and design.Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present application of protection is sought, but is merely representative of the selected embodiment of the application.
Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall in the protection scope of this application.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
Dry denitration system and technique according to the application some embodiments are described referring to Fig. 1 to Fig. 4.
Referring to shown in Fig. 1 to Fig. 3, embodiments herein provides a kind of Dry denitration system, comprising: to wind devices 1,
Expect wind mixing apparatus 2 and storage equipment 3；Wherein, material wind mixing apparatus 2 include be sequentially connected logical double-screw feeder 21,
Air amplifying device 22 and conveyance conduit 23；Storage equipment 3 is for storing and providing material to double-screw feeder 21；Air
Amplifying device 22 includes shell 221 and feed pipe 222；Feed pipe 222 extends along vertical direction；Shell 221 be located to
The outside of expects pipe 222, and shell 221 is provided with air inlet 2211, air inlet 2211 is connected with to wind devices 1；Feed pipe 222
It offers to wind gap 2223, and is located in shell 221 to wind gap 2223, to 11 gaps between wind for defeated into feed pipe 222
Send air；The input end of feed pipe 222 is connected with double-screw feeder 21, and the input end of feed pipe 222 is used for double helix
The material that feeder 21 exports is delivered to the inside of feed pipe 222 along vertical direction；The outlet end of feed pipe 222 and delivery pipe
Road 23 is connected, and the outlet end of feed pipe 222 is for exporting the material wind mixture in feed pipe 222 along vertical direction to defeated
It send in pipeline 23；Conveyance conduit 23 is for being connected to burner hearth 7.
Dry denitration system provided by the present application, double-screw feeder 21 are used to convey material, material edge to feed pipe 222
Vertical direction enter in feed pipe 222 from input end, while to wind devices 1 to the air inlet 2211 of shell 221 convey high speed
The air of flowing, high-speed flow are accumulated in shell 221, and then high-speed flow is by entering feed pipe 222 to 11 clearance flows between wind
Inside, high-speed flow is adsorbed on side wall, and high-speed flow leads to the generation of center area of low pressure, object during flowing through side wall
Material moves down, and be sufficiently mixed in feed pipe 222 with high-speed flow under the action of negative pressure and self gravity, is formed
The form of wind wrapper facilitates high-speed flow and drives material high-speed mobile, and material will not settle, and material will not be bonded in
On the tube wall of expects pipe 222, the acceleration of bellows chamber material is moved downward, and is finally exported out of discharge port along vertical direction, using conveying
Pipeline 23 is delivered in boiler, and uniform material wind mixture is formed in pipeline, and it is uniform for guaranteeing to spray into boiler, due to
Expect that the concentration of wind mixture is higher, transfer efficiency is high, and denitration effect is more preferable.In addition, storage equipment 3 is used to store material, and can
The material in storage equipment 3 is transported at double-screw feeder 21 by artificial or machine, and then to double-screw feeder
21 provide material.
Specifically, the course of work of this Dry denitration system is that artificial or machine conveys the material in storage equipment 3
Into double-screw feeder 21, material is conveyed to the feed pipe 222 of air amplifying device 22 by double-screw feeder 21 again, with this
Meanwhile high-speed flow is blasted at the air inlet 2211 of the shell 221 of air amplifying device 22, high-speed flow is by giving wind gap
2223 enter in feed pipe 222, and high-speed flow is adsorbed on side wall, and high-speed flow causes center low during flowing through side wall
The generation of intermediate pressure section, material move down under the action of negative pressure and self gravity, and in feed pipe 222 with high speed gas
Stream is sufficiently mixed, and forms the form of wind wrapper, bellows chamber material sharp downward movement again, and be delivered to pot by conveyance conduit 23
Furnace, and uniform material wind mixture is formed in pipeline finally carries out denitration process being injected into boiler.
As it can be seen that this Dry denitration system has to wind devices 1, material wind mixing apparatus 2 and storage equipment 3, storage equipment 3
Material can be supplied to the feed pipe 222 of the air amplifying device 22 of material wind mixing apparatus 2, it can be to feed pipe to wind devices 1
222 provide high-speed flow, and since the inside of venturi principle feed pipe 222 generates negative pressuren zone, material is in negative pressure and itself weight
It is hurtled down under the action of power into feed pipe 222, and mixed with high-speed flow, forms the mixture of bellows chamber material form, material
Sedimentation will not be generated, the mixture of bellows chamber material form will form along outputting material straight down with running inside pipeline
Even material wind mixture is uniformly, to improve denitration efficiency when spraying into boiler.
Wherein, optionally, double-spiral feeder, air amplifier and conveyance conduit 23 along vertical direction, and from upper
It is sequentially connected downwards logical, but is not limited only to this.
Wherein, optionally, feed pipe 222 is connected with shell 221, and the two can be connected by welding and connect, but be not limited only to
This.
Wherein, optionally, air inlet 2211 and it is connected with the inside of shell 221 to wind gap 2223.
Wherein, optionally, material is urea, but is not limited only to this.
In one embodiment of the application, it is preferable that as shown in Figure 1, to wind gap 2223 be along with vertical direction
The inclination tuyere structure of acute angle is formed, and is used for feed pipe 222 to wind gap 2223 diagonally downward to wind.
In this embodiment, it is arranged to wind gap 2223 skewed, and can inclines to feed pipe 222 to wind gap 2223
High-speed flow is conveyed obliquely, the side wall that high-speed flow is capable of the person's of patch feed pipe 222 flows downward, so that feed pipe 222
Middle part forms negative pressuren zone, so that material fast automatic whereabouts under the action of negative pressure, the material of whereabouts are mixed with high-speed flow, shape
Become a common practice the form of wrapper, facilitate high-speed flow and drive material high-speed mobile, material will not settle, and material will not bond
On the tube wall of feed pipe 222, bellows chamber material sharp downward movement again.
In one embodiment of the application, it is preferable that as shown in figure 3, feed pipe 222 includes upper feed pipe 2221 under
Feed pipe 2222；Wherein, upper feed pipe 2221 is plugged in lower feed pipe 2222 far from one end of double-spiral feeder, and on give
It is formed between expects pipe 2221 and lower feed pipe 2222 to wind gap 2223；Upper feed pipe 2221 is set along being in gradually-reducing shape straight down
It sets, lower feed pipe 2222 along being in that flaring shape is arranged straight up, so that being obliquely installed to wind gap 2223；Lower feed pipe
2222 are connected with conveyance conduit 23.
In this embodiment, upper feed pipe 2221 is plugged in lower feed pipe 2222 far from one end of double-spiral feeder,
Wherein, upper feed pipe 2221 is along being in gradually-reducing shape setting straight down, and lower feed pipe 2222 along being in that flaring shape is set straight up
It sets, so that being obliquely installed to wind gap 2223, thus is convenient for the air-flow by conveying high speed diagonally downward to wind gap 2223, into
And the inside of feed pipe 222 is made to form negative pressure region, so that material moves downwardly to feed pipe under the action of negative pressure automatically
It in 222, and is sufficiently mixed with high-speed flow, forms the form of bellows chamber material, facilitated high-speed flow and drive material high-speed mobile, object
Material will not settle, and material will not be bonded on the tube wall of feed pipe 222.
Wherein, optionally, the other end of upper feed pipe 2221 passes through the outside that shell 221 is located at shell 221, certainly, no
It is only limitted to this.
In one embodiment of the application, it is preferable that as shown in figure 3, conveyance conduit 23 include bending segment pipe 231 with
And straight line segment pipe 232；Bending segment pipe 231 and straight line segment pipe 232 are sequentially connected logical；It is bent one end of segment pipe 231
It is connected with air amplifying device 22, and being bent segment pipe 231 is arcuate structure, straight line segment pipe 232 is far from bending segment pipe
231 one end is connected with burner hearth 7 by pipeline.
In this embodiment, bending segment pipe 231 is sequentially connected logical with straight line segment pipe 232, is bent segment pipe 231 and is given
The outlet end of expects pipe 222 is connected, and bending segment pipe 231, which plays, smoothly send wind action, avoids angular generation, avoids
Material wind mixture accumulation is blocked in sharp corner, guarantees the efficiency and concentration of material wind mixture conveying, to guarantee denitration effect.
Wherein, optionally, bending segment pipe 231 is arcuate structure, and the structure of wedge angle is not present in its own, mixed convenient for material wind
Close the smooth export of object.
Wherein, optionally, bending segment pipe 231 is smoothly connected with straight line segment pipe 232, and wedge angle is not present.
Wherein, optionally, bending segment pipe 231 is an integral structure with straight line segment pipe 232, certainly, is not limited only to this.
In one embodiment of the application, it is preferable that as depicted in figs. 1 and 2, between storage equipment 3 and material wind process
It is connected by blower 6 with burner hearth 7.
In this embodiment, blower 6 can siphon away storage equipment 3 and expect the ammonia in wind process, and ammonia is defeated
Burner hearth 7 has been given, has prevented ammonia from escaping and pollutes environment into air.
Wherein, optionally, the quantity of blower 6 be 1 or 2, when the quantity of blower 6 be 1 when, expect wind process between with
And discharging equipment shares 1；When the quantity of blower 6 is 2, between material wind process and discharging equipment is respectively equipped with 1 blower 6.
In one embodiment of the application, it is preferable that as shown in Fig. 2, blower 6 includes the first blower 61 and the second blower
62；Wherein, on the first blower 61 is arranged between storing, and the first blower 61 is connected with the inside between storing；Second blower 62
On being arranged between expecting wind process, and it is connected between the second blower 62 and material wind process.
In this embodiment, the first blower 61 and the second blower 62 work independently, and will not interact, can be according to reality
It is turned on or off, work safety, reliability are higher.
In one embodiment of the application, it is preferable that as depicted in figs. 1 and 2, Dry denitration system further includes that detection is set
For 4 and control equipment 5；Wherein, detection device 4, control equipment 5 and material wind mixing apparatus 2 are sequentially connected and connect, detection device
4 are also connected with burner hearth 7.
In this embodiment, optionally, control equipment 5 is also connected with twin-screw batcher and to wind devices 1, detects
Equipment 4 is used to detect the discharge amount of nitrogen oxides, sulfide in burner hearth 7 etc., and the data transfer that will test gives control equipment
5, control equipment 5 is vertical according to detection, adjusts the revolution of double-spiral feeder and then controls discharge quantity, and to wind devices 1
Power, i.e., adjustment is to air quantity etc..Wherein, optionally, the model of detection device is CEMS1000 and cooperates flue gas emission monitoring soft
Part V1.0；Control equipment 5 is the controller that model is BKTX01.
In one embodiment of the application, it is preferable that material wind mixing apparatus 2 further includes between expecting wind process and installing
Plate；Wherein, mounting plate setting is in material wind process, and mounting plate is provided with mounting hole；The setting of double-screw feeder 21 is being pacified
It fills in hole.(not shown)
In this embodiment, expect to can reduce the noise generated when material wind mixes between wind process, and can between material wind process
Leaking for ammonia in the course of work is prevented, it is safer and more reliable.Wherein, mounting plate is that double-screw feeder 21 provides installation position
It sets and supports, prevent double-screw feeder 21 from shaking.
Wherein, optionally, material wind mixing apparatus 2 further include material wind process between, double-spiral feeder, air amplifier and
A part of setting of conveyance conduit 23 is in material wind process, and another part conveyance conduit 23 stretches out between material wind process, is located at material
Outside between wind process is not limited only to this certainly.
In one embodiment of the application, it is preferable that Dry denitration system further includes conveying equipment, and conveying equipment is used for
Material in storage equipment 3 is delivered to material wind process equipment；Conveying equipment includes track and cart, and track is arranged in storing
Between equipment 3 and material wind process equipment, cart can slide in orbit.(not shown)
In this embodiment, specifically, between track is arranged between storing between material wind process, cart can be slided in orbit
It is dynamic, the material in storing can be carried on cart, then it is artificial or using electric drive by the material wind process of cart promotion
Between, then have and manually material is put into double-spiral feeder.
In one embodiment of the application, it is preferable that storage equipment 3 includes between storing, drier and bracket；Its
In, drier and bracket are arranged in storing, and drier is arranged on the inner sidewall between storing, and bracket setting is being stored up
On bottom face between material.(not shown)
In this embodiment, the materials such as urea can be placed on bracket and is stored, so that the ground between urea and storing
Separation, plays moisture-proof effect, and drier is further ensured that the drying of inside between storing.Wherein, optionally, it is provided between storing
Door that is openable or closing.
In one embodiment of the application, it is preferable that as shown in figure 4, including to 11, exhaust fan between wind to wind devices 1
12 and filter screen 13；Wherein, the setting of exhaust fan 12 is between wind 11, and the air outlet of exhaust fan 12 and shell 221 into
Air port 2211 is connected；To ventilation opening is offered between wind 11, filter screen 13 is removably disposed in ventilation opening.
In this embodiment, when working to wind devices 1, the starting of exhaust fan 12 extracts air out of between wind 11, and passes through
Exhaust fan 12 is converted to the air-flow of high speed, and high-speed flow is conveyed to the air inlet 2211 in shell 221 by exhaust fan 12.In exhausting
It during machine 12 works, is reduced to the air between wind 11, outside air is entered by filter screen 13 between wind 11, and supply is empty
Gas.Wherein, filter screen 13 plays the role of impurity screening, and exhaust fan 12 reduces noise in the interior work of exhaust fan 12.Its
In, optionally, door that is openable or closing is provided between wind 11.
Shown in Figure 5, embodiments herein also provides a kind of Dry denitration technique, comprising:
Step 100, along direction from the top down through double-screw feeder 21 to the feed pipe 222 of air amplifying device 22
Transport urea conveys air to the feed pipe 222 of air amplifying device 22 to wind devices 1, and urea and air are in feed pipe 222
It is mixed to form the mixture of bellows chamber material form, and moves downwardly to conveyance conduit 23；
Step 200, mixture form uniform material wind mixture in conveyance conduit 23, then material wind mixture is delivered to
In burner hearth 7, material wind mixture in burner hearth 7 nitride and sulfide react, progress denitration process.
In Dry denitration technique provided by the present application, double-screw feeder 21 is used to convey material, material to feed pipe 222
Enter in feed pipe 222 from input end along vertical direction, while conveying height to the air inlet 2211 of shell 221 to wind devices 1
The air of speed flowing, high-speed flow is accumulated in shell 221, and then high-speed flow is by entering feed pipe to 11 clearance flows between wind
222 inside, due to venturi principle, high-speed flow is adsorbed on side wall, during high-speed flow causes during flowing through side wall
The generation of heart area of low pressure, material move down under the action of negative pressure and self gravity, and in feed pipe 222 with height
Fast air-flow is sufficiently mixed, and forms the form of wind wrapper, is facilitated high-speed flow and is driven material high-speed mobile, material will not sink
Drop, and material will not be bonded on the tube wall of feed pipe 222, the acceleration of bellows chamber material moves downward, finally along vertical direction from out
Output, is delivered in boiler using conveyance conduit 23 in material mouth, and uniform material wind mixture is formed in pipeline, guarantees spray
It is uniform for entering in boiler, and since the concentration of material wind mixture is higher, transfer efficiency is high, and denitration effect is more preferable.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the application, rather than its limitations；To the greatest extent
Pipe is described in detail the application referring to foregoing embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, each embodiment technology of the application that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of Dry denitration system characterized by comprising to wind devices, material wind mixing apparatus and storage equipment；
Wherein, the material wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and delivery pipe
Road；
The storage equipment is for storing and providing material to the double-screw feeder；
The air amplifying device includes shell and feed pipe；The feed pipe extends along vertical direction；The case cover
It is located at the outside of the feed pipe, and the shell is provided with air inlet, the air inlet is connected with described to wind devices；Institute
State feed pipe and offer and give wind gap, and it is described be located in the shell to wind gap, it is described to wind gap for being given to described
Air is conveyed in expects pipe；
The input end of the feed pipe is connected with the double-screw feeder, and the input end of the feed pipe is used for will be described double
The material of screw feeder output is delivered to the inside of the feed pipe along vertical direction；The outlet end of the feed pipe and institute
It states conveyance conduit to be connected, the outlet end of the feed pipe is used for the material wind mixture in the feed pipe along vertical direction
In output to the conveyance conduit；
The conveyance conduit is for being connected to burner hearth.
2. Dry denitration system according to claim 1, which is characterized in that it is described to wind gap be along with vertical direction
The inclination tuyere structure of acute angle is formed, and described is used to the feed pipe give wind diagonally downward to wind gap.
3. Dry denitration system according to claim 2, which is characterized in that the conveyance conduit include bending segment pipe with
And straight line segment pipe；The bending segment pipe and the straight line segment pipe are sequentially connected logical；One end of the bending segment pipe
It is connected with the air amplifying device, and the bending segment pipe is arcuate structure, the straight line segment pipe is far from described curved
One end of tune pipeline is connected with the burner hearth by pipeline.
4. Dry denitration system according to claim 1, which is characterized in that the storage equipment and the material wind process
Between be connected by blower with the burner hearth.
5. Dry denitration system according to claim 4, which is characterized in that the blower includes the first blower and the second wind
Machine；Wherein, on first blower is arranged between the storing, and first blower is connected with the inside between the storing
It is logical；On second blower is arranged between the material wind process, and it is connected between second blower and the material wind process.
6. Dry denitration system according to any one of claim 1 to 5, which is characterized in that further include detection device with
And control equipment；Wherein, the detection device, the control equipment and the material wind mixing apparatus are sequentially connected and connect, described
Detection device is also connected with the burner hearth.
7. Dry denitration system according to any one of claim 1 to 5, which is characterized in that the material wind mixing apparatus
Further include material wind process between and mounting plate；Wherein, the mounting plate setting is in the material wind process, and the mounting plate
It is provided with mounting hole；The double-screw feeder setting is in the mounting hole.
8. Dry denitration system according to any one of claim 1 to 5, which is characterized in that the storage equipment includes
Between storing, drier and bracket；Wherein, the drier and the bracket are arranged in the storing, and described
Drier is arranged on the inner sidewall between the storing, and the bracket is arranged on the bottom face between the storing.
9. Dry denitration system according to any one of claim 1 to 5, which is characterized in that described to include to wind devices
To between wind, exhaust fan and filter screen；Wherein, the exhaust fan setting is given in wind described, and the outlet air of the exhaust fan
Mouth is connected with the air inlet of the shell；It is described to ventilation opening is offered between wind, the filter screen is removably disposed in
In the ventilation opening.
10. a kind of Dry denitration technique, which comprises the following steps:
Along direction from the top down through double-screw feeder to the feed pipe transport urea of air amplifying device, to wind devices to
The feed pipe of the air amplifying device conveys air, and the urea and the air are mixed to form bellows chamber in the feed pipe
The mixture of material form, and move downwardly to conveyance conduit；
The mixture forms uniform material wind mixture in the conveyance conduit, then the material wind mixture is delivered to furnace
In thorax, the material wind mixture in the burner hearth nitride and sulfide react, carry out denitration process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811254505.5A CN109045997A (en) | 2018-10-25 | 2018-10-25 | Dry denitration system and technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811254505.5A CN109045997A (en) | 2018-10-25 | 2018-10-25 | Dry denitration system and technique |
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| CN201811254505.5A Pending CN109045997A (en) | 2018-10-25 | 2018-10-25 | Dry denitration system and technique |
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| CN114440247A (en) * | 2022-01-28 | 2022-05-06 | 浙江润昇宏焰能源科技股份有限公司 | Feeding device and system for reducing nitrogen oxides of industrial boiler |
| CN114451577A (en) * | 2022-03-07 | 2022-05-10 | 浙江中烟工业有限责任公司 | Material recovery device of feeding machine |
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Application publication date: 20181221 |