CN207221680U - A kind of scalable and shuttle-type SNCR reducing agent injection apparatus - Google Patents
A kind of scalable and shuttle-type SNCR reducing agent injection apparatus Download PDFInfo
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- CN207221680U CN207221680U CN201721217351.3U CN201721217351U CN207221680U CN 207221680 U CN207221680 U CN 207221680U CN 201721217351 U CN201721217351 U CN 201721217351U CN 207221680 U CN207221680 U CN 207221680U
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- injection apparatus
- reducing agent
- jet pipe
- cylinder
- cooling collar
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Abstract
The utility model provides a kind of scalable and shuttle-type SNCR reducing agent injection apparatus, including jet pipe, cooling collar and the swing sleeve being arranged successively from the inside to the outside；The swing sleeve includes vertically disposed cylinder and rotational handle, the sealing structure with cylinder body outer wall form fit is provided with furnace wall, the fixed seat being rotatably connected with rotational handle is provided with the outside of furnace wall, atomizer and hot air inlet are respectively arranged with the rear and front end of jet pipe and reducing agent entrance is additionally provided between the two, sealed movable connection is used between the tail end and jet pipe pipe shaft of the cooling collar, and cooling air intake is additionally provided with cooling collar, the front opening of the cooling collar is in order to discharging cold air and realize the axially free flexible of jet pipe.The device can effectively adjust the spray angle and spray regime of reducing agent according to the change of flue gas operating mode, reducing agent is sufficiently mixed with flue gas, and then improve denitration efficiency and effect, reduce boiler operatiopn cost.
Description
Technical field
It the utility model is related to SNCR gas denitrifying technologies field, and in particular, to a kind of scalable and shuttle-type
SNCR reducing agent injection apparatus.
Background technology
In recent years, China NOxThe rapid growth of discharge capacity causes environment and ecology and seriously affects, but existing
Policy and denitration technology can not meet actual discharge demand for control.China came into effect from 2012《Thermal power plant's atmosphere pollution
Discharge standard》(GB13223-2011), it is desirable to the NO of new construction of coal-fired boiler dischargexMass concentration is no more than 100mg/m3, from 2014
From on July 1, in, put into operation fired power generating unit NO for key areaxDischarge capacity is no more than 100mg/m3, non-key area was thrown before 2003
The unit of production is no more than 200mg/m3；Therefore, as NOxThe Industrial Boiler equipment of discharge major part is faced with urgent denitrating flue gas
Task.
The cardinal principle of denitrating flue gas be by into boiler flue spray into ammonia reducing agent, and make its with tail flue gas
Reaction of nitrogen oxides, according to the difference of extraneous reaction condition, mainly includes SCR and SNCR two from the discharge capacity for reducing nitrogen oxides
Kind method of denitration.Wherein, SCR methods are because its catalyst requirement is high, installs with transforming the problems such as difficult, cost of investment is expensive, significantly
Constrain its application and development on Industrial Boiler；And SNCR (Selective Non-Catalytic Reductio, selection
Property non-catalytic reduction) method, be it is a kind of without using catalyst, in 850~1100 DEG C of temperature ranges, by amino-containing reducing agent
(such as ammonium hydroxide, urea liquid etc.) is sprayed into stove, by the NO in flue gasxReduction removes and generates N2And H2The cleaning denitration technology of O,
Since SNCR technologies are to carry out NO using high-temperature area suitable in stovexReduction reaction, without putting into expensive catalyst, equipment
Transformation is simple, and initial investment is low, and operating cost is not high, thus is suitable under current environment to the denitrating flue gas of Industrial Boiler
Reason.
Since SNCR denitration is owned by France in fast response, very sensitive to temperature, if reaction environment temperature is excessive, reducing agent is anti-
And NO can be oxidized tox, play reaction；If reaction environment temperature is too low, NO in flue gas can be causedxReduce insufficient, shadow
Denitration efficiency and denitration effect are rung, therefore, should use up makes reaction temperature be between 800-1000 DEG C in which can measure.In view of in burner hearth
Temperature it is different everywhere and even the temperature of the same area are also to change with the change of boiler load, if being reduced in injection
It can be injected in the appropriate area in optimum temperature range, then can not only according to the profiling temperatures in burner hearth during agent
Improve the denitration efficiency and denitration effect of flue gas, moreover it is possible to the invalid loss of reducing agent is greatly avoided, so as to reduce reducing agent
Usage amount, effectively reduces the operating cost of Industrial Boiler, this energy-saving and emission-reduction to heat power plant boiler is of great significance.
Existing reducing agent injection apparatus has the disadvantage that：1st, the spray orifice position after device installs is fixed, it is impossible to root
Spray orifice position is adjusted in time according to the fluctuation situation of flue gas operating mode, the reducing agent ejected can not fall into the area of suitable temperature
In domain, preferable denitration efficiency is not reached；2nd, the area of spray orifice injection is fixed, and the reducing agent that can not be sparged into is fully mixed with flue gas
Close, and then cause the waste of reducing agent, the secondary pollution caused to environment is set；Pipe body part of 3 jet pipes close to spray orifice position
It is chronically in the working environment of high temperature, high dust, heat insulation is bad, and service life is shorter, need to often replace, and adds fortune
Row expense and labor intensity.
Chinese patent CN201610739696 discloses a kind of automatic regulation type reducing agent injection apparatus for denitration, bag
Include by the first motor, the first special shape gear, the second special shape gear, rack, head rod, the first L-shaped connecting rod, slide, sliding block,
Second motor, screw rod etc., mounting bracket inner right wall top are provided with the second motor of guide rod, are cased with guide sleeve on guide rod, guide sleeve is with leading
Bar coordinates.The injection apparatus is provided with huge mounting bracket and drives spray gun to swing up and down by rack and pinion engagement, structure
It is complicated, occupied space is big, and the sealing problem of furnace wall is dealt with when not swung to spray gun, it is contemplated that this point, the reality
With new practicality Shortcomings, while the utility model is also not involved with and carries out the phase of cooling protection inside the Pass to spray gun
Hold.
Utility model content
The purpose of this utility model is to provide a kind of spray orifice position simple in structure, flexible to operation, adjustable and spray
The reducing agent injection apparatus of firing angle degree, to solve the problems, such as to propose in background technology.
To achieve the above object, the utility model provides a kind of scalable and shuttle-type SNCR reducing agents injection dress
Put, including jet pipe, cooling collar and the cylinder for swinging sleeve that front end is inserted into boiler internal and is arranged successively from the inside to the outside
Body；The swing sleeve further includes the rotational handle being vertically connected on the cylinder body outer wall, is provided with the furnace wall of boiler
With the sealing structure of the cylinder body outer wall form fit, fixed seat is provided with the outside of furnace wall and the rotational handle passes through bearing
Realize and be rotatably connected between the fixed seat, be respectively arranged with atomizer in the rear and front end of the jet pipe and hot-air enters
Mouthful and be additionally provided with reducing agent entrance between the two, the reducing agent entrance be located on the outside of furnace wall, passes through hot-air flowing realization
Sealed movable company is used between the pipe shaft of transport and atomization to reducing agent, the tail end of the cooling collar and the jet pipe
Connect so that the jet pipe can be moved axially relative to cooling collar, and cooling sky is additionally provided with the cooling collar
Gas entrance, the front opening of the cooling collar is in order to discharging cold air and realize the axially free flexible of the jet pipe；It is logical
Cross the swing and scaling operation for applying external force realization to rotational handle and jet pipe pipe shaft to whole injection apparatus.
Preferably, the sealing structure includes two retractable doors for being respectively arranged at both sides above and below the cylinder, and each
Retractable door includes sealing along at least two groups of piston seals of the barrel lenght directional spreding and with the piston type
The diaphragm seal that part linkage is set, the piston seal include hollow and recreation room towards cylinder direction opening, are arranged at institute
State the portable pillar at recreation room aperture position and be arranged at the indoor spring of activity, the both ends of the spring respectively with
The bottom surface of recreation room and portable pillar are connected positioned at the indoor one end of activity, the other end of the portable pillar and are set with its homonymy
Diaphragm seal be connected, the diaphragm seal is protected with the outer wall of the cylinder all the time for globoidal structure and under the drive of the portable pillar
Hold and be close to.
Preferably, the portable pillar is T font structures positioned at the indoor one end of activity, and in the exit of the recreation room
Step is equipped with, can be achieved to fix the position of the portable pillar by the clamping between the step and portable pillar T font structures.
Preferably, thermal insulation layer is set to be produced to reduce high temperature to sealing structure by the side of boiler internal in the sealing structure
Raw damage simultaneously extends its service life.
Preferably, the injection apparatus is further included for controlling the first of the rotational handle direction of rotation and angle to drive
Device and the second driving device for controlling the jet pipe telescopic direction and distance.
Preferably, the injection apparatus is further included for placing the first driving means and/or the second driving device
Bottom plate, the bottom plate are connected and are provided with the bottom surface of the bottom plate scalable by the cylinder of flange and the swing sleeve
Bar, the both ends of the telescopic rod are hinged with the bottom plate and furnace wall outer wall respectively.
Technical solution provided by the utility model at least has the advantages that：
1st, the injection apparatus is simple in structure and flexible and convenient to use, can be according to the situation of change of flue gas operating mode to reducing agent
Eject position and spray angle effectively adjusted so that reducing agent is sprayed in the suitable region of reaction temperature and and cigarette
Gas is sufficiently mixed, and then improves the denitration efficiency and denitration effect of flue gas, is reduced the dosage of reducing agent, is reduced boiler
Operating cost；
2nd, the injection apparatus is provided with matched sealing structure in furnace wall, it makes diaphragm seal using the recovery of spring
All the time it is close on the outer wall for swinging sleeve, had both ensure that the leakproofness of boiler, reduces security risk, and device will not be hampered
Freely swing, there is practicality and promotional value；
3rd, the driving device integrated hanging of the injection apparatus sets and is connected by telescopic rod and furnace wall outer wall, neither
Need to add extra supporting rack and force structure is simple, occupies little space, and do not influence the flexible of injection apparatus and swing behaviour
Make；
4th, the injection apparatus is swinging one layer of cooling collar of setting between sleeve and jet pipe, by the way that cold air is delivered to spray
Hole is implemented around cooling to jet pipe fore-end, and outermost pendulum is also avoid while service using life is extended
There is the security risks such as scald because temperature is excessive in moving sleeve.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, drawings discussed below is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Other attached drawings are obtained, wherein：
Fig. 1 is the structure diagram of injection apparatus described in the utility model；
Fig. 2 is the structure diagram of the fixed seat of injection apparatus shown in Fig. 1；
Fig. 3 is the sectional view along A-A of the swing sleeve of injection apparatus shown in Fig. 1；
Fig. 4 is the structure diagram of the sealing structure of injection apparatus shown in Fig. 1；
In figure：01 furnace wall, 02 water screen tube, 1 jet pipe, 2 cooling collars, 3 swing sleeves, 4 sealing structures, 5 fixed seats, 6
First driving means, 7 second driving devices, 8 bottom plates, 9 telescopic rods；11 atomizers, 12 hot air inlets, 13 reducing agents enter
Mouthful；21 cooling air intakes；31 cylinders, 32 rotational handles；41 diaphragm seals, 42 recreation rooms, 43 portable pillars, 44 springs, 45 is heat-insulated
Layer.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
The all other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of scalable and shuttle-type SNCR reducing agent injection apparatus, including jet pipe 1, cooling collar 2, pendulum
Moving sleeve 3, sealing structure 4, fixed seat 5, bottom plate 8 and telescopic rod 9；The jet pipe 1, cooling collar 2 and swing sleeve 3 are by interior
To being arranged successively outside and the front end of three both passes through furnace wall 01 and is inserted into boiler internal, the sealing structure 4 is arranged on furnace wall 01
At insertion position, the fixed seat 5, which is arranged on the outside of furnace wall and is used for realization the position for swinging sleeve 3, fixes and rotates fortune
Driving device dynamic, that the bottom plate 8 is connected with the swing sleeve 3 by flange and is acted for placing control injection apparatus,
The both ends of the telescopic rod 9 are rotatably connected with the bottom surface of the bottom plate 8 and furnace wall outer wall respectively by hinge so that stove
The stabilization force structure of a triangle is formed between wall outer wall, bottom plate and telescopic rod.
Atomizer 11 and hot air inlet 12 are respectively arranged with the rear and front end of the jet pipe 1 and are also set between the two
Reducing agent entrance 13 is equipped with, the transport and atomization realized to reducing agent can be flowed by hot-air, and hot-air can also be to reduction
Agent is preheated, and the reducing agent entrance 13 is located on the outside of furnace wall.The pipe shaft of the tail end of the cooling collar 2 and the jet pipe 1
Between use sealed movable connection so that the jet pipe 1 can be moved axially relative to cooling collar 2, in the cooling
Cooling air intake 21 is additionally provided with casing 2, cold air is delivered at cooling collar 2 and the front position for swinging sleeve 3 simultaneously
Play the role of cooling protection, influence the service life of device to avoid high temperature, the front opening of the cooling collar 2 is in order to arranging
Go out cold air and realize the axially free flexible of the jet pipe 1.
In the lump referring to Fig. 2 and Fig. 3, the swing sleeve 3 for cross-shaped configuration and including cylinder 31 be vertically fixed on institute
State the rotational handle 32 of 31 outer wall both sides of cylinder, the fixed seat 5 is nearly Ω types structure and its main body along the rotational handle 32
Peripheral ring be bolted to connection around parcel, two legs of the fixed seat on furnace wall outer wall, the rotational handle
32 are rotatably connected by rolling bearing and the main body inner wall of the fixed seat 5.
With continued reference to Fig. 4, the sealing structure 4 is stretched for two of both sides including being respectively arranged at the cylinder about 31
Door, and each retractable door include along 31 length direction of cylinder distribution two groups of piston seals and with the work
The diaphragm seal 41 that the linkage of plug seal is set, the piston seal include hollow and towards the recreation room of cylinder direction opening
42nd, the portable pillar 43 being arranged at 42 aperture position of recreation room and the spring 44 being arranged in the recreation room 42, institute
The both ends for stating spring 44 are connected with the bottom surface of recreation room 42 and portable pillar 43 positioned at the indoor one end of activity respectively, the activity
The other end of column 43 and the diaphragm seal 41 set with its homonymy are connected, and the diaphragm seal 41 is in semicircular panel construction and its
Concave and the outer wall form fit of the cylinder 31 so that upper and lower two diaphragm seals 41 can begin under the drive of portable pillar 43
The whole outer wall with the cylinder 31 is held against, and then realizes 360 ° of sealing protections to cylinder 31.
And portable pillar deviates from and it is more consolidated position during exercise in order to prevent, in the exit of the recreation room 42
Step horizontal-extending inwardly is equipped with, while the portable pillar 43 is designed to T font structures positioned at the indoor one end of activity, should
Coordinate clamping between T font structures and the step.
In the present embodiment, the sealing structure 4 further includes the thermal insulation layer 45 being arranged on by boiler interior direction, described
Thermal insulation layer 45 is arranged between the outer wall of water screen tube 02 and recreation room 42, can reduce the damage that high temperature produces sealing structure 4
Hinder and extend its service life.The water screen tube 02 is arranged on furnace wall inner wall and bypasses 11 region of nozzle, makes
Obtaining the injection apparatus has enough spray angles and space.
The driving device include be used for control 32 direction of rotation of rotational handle and angle first driving means 6,
And for controlling the second driving device 7 of 1 telescopic direction of jet pipe and distance.Wherein, the first driving means 6 are electricity
Machine；Second driving device 7 includes motor, cylinder and connecting rod, and the motor and cylinder pass through fixed arm and fixed column respectively
It is arranged on the bottom plate 8, the motor is by controlling the change of cylinder pressure come the flexible of control piston, and the cylinder
Piston is connected further through the connecting rod of L-shaped with the pipe shaft of the jet pipe 1, therefore, the flexible of cylinder piston is driven by motor, can be real
Existing freely the stretching in cooling collar 2 of jet pipe 1, and then realize the automatic telescopic function of injection apparatus.
The above is only the preferred embodiment of the present invention, not thereby limits the patent protection model of the utility model
Enclose, for those skilled in the art, the present invention may have various modifications and changes.In the spirit of the utility model
Within principle, every any improvement made based on the specification and figures of the utility model or equivalent substitution, directly or
Other relevant technical fields are used in indirectly, should all be included in the scope of patent protection of the utility model.
Claims (6)
1. a kind of scalable and shuttle-type SNCR reducing agent injection apparatus, it is characterised in that be inserted into including front end in boiler
Portion and jet pipe (1), cooling collar (2) and the cylinder (31) for swinging sleeve (3) being arranged successively from the inside to the outside；The swing
Sleeve (3) further includes the rotational handle (32) being vertically connected on the cylinder (31) outer wall, is set in the furnace wall (01) of boiler
The sealing structure (4) with the cylinder (31) outer wall form fit is equipped with, fixed seat (5) and described turn are provided with the outside of furnace wall
Fixed handle (32) is rotatably connected by being realized between bearing and the fixed seat (5), is distinguished in the rear and front end of the jet pipe (1)
It is provided with atomizer (11) and hot air inlet (12) and reducing agent entrance (13), the reducing agent is additionally provided between the two
Entrance (13) is located on the outside of furnace wall, and the transport and atomization to reducing agent are realized by hot-air flowing, the cooling collar (2)
Sealed movable connection is used between the pipe shaft of tail end and the jet pipe (1) so that the jet pipe (1) can be relative to cooling collar
(2) move axially, and cooling air intake (21) is additionally provided with the cooling collar (2), the cooling collar (2)
Front opening in order to discharging cold air and realize the axially free flexible of the jet pipe (1)；By to rotational handle and spray
Pipe pipe shaft applies swing and scaling operation of the external force realization to whole injection apparatus.
2. injection apparatus according to claim 1, it is characterised in that the sealing structure (4) includes being respectively arranged at institute
Two retractable doors of cylinder (31) both sides up and down are stated, and each retractable door is included along the distribution of the cylinder (31) length direction
At least two groups of piston seals and the diaphragm seal (41) set with piston seal linkage, the piston type are close
Sealing includes hollow and recreation room (42) towards cylinder direction opening, the activity being arranged at the recreation room (42) aperture position
Column (43) and the spring (44) being arranged in the recreation room (42), the both ends of the spring (44) respectively with recreation room
(42) bottom surface and portable pillar (43) are connected positioned at the indoor one end of activity, the other end of the portable pillar (43) and same with it
Side set diaphragm seal (41) be connected, the diaphragm seal (41) for globoidal structure and under the drive of the portable pillar (43) all the time
It is held against with the outer wall of the cylinder (31).
3. injection apparatus according to claim 2, it is characterised in that the portable pillar (43) is positioned at the indoor one end of activity
For T font structures, and step is equipped with the exit of the recreation room (42), passes through the step and portable pillar T font structures
Between clamping can be achieved to fix the position of the portable pillar.
4. injection apparatus according to claim 3, it is characterised in that lean on the one of boiler internal in the sealing structure (4)
Side sets thermal insulation layer (45) to reduce damage that high temperature produces sealing structure and extend its service life.
5. injection apparatus according to claim 1, it is characterised in that the injection apparatus is further included for controlling described turn
The first driving means (6) of fixed handle (32) direction of rotation and angle and for control the jet pipe (1) telescopic direction and away from
From the second driving device (7).
6. injection apparatus according to claim 5, it is characterised in that the injection apparatus is further included for placing described the
The bottom plate (8) of one driving device (6) and/or the second driving device (7), the bottom plate (8) pass through flange and the swing sleeve
(3) cylinder (31) is connected and telescopic rod (9), the both ends of the telescopic rod (9) are provided with the bottom surface of the bottom plate (8)
It is hinged respectively with the bottom plate (8) and furnace wall outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721217351.3U CN207221680U (en) | 2017-09-21 | 2017-09-21 | A kind of scalable and shuttle-type SNCR reducing agent injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721217351.3U CN207221680U (en) | 2017-09-21 | 2017-09-21 | A kind of scalable and shuttle-type SNCR reducing agent injection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207221680U true CN207221680U (en) | 2018-04-13 |
Family
ID=61863522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721217351.3U Expired - Fee Related CN207221680U (en) | 2017-09-21 | 2017-09-21 | A kind of scalable and shuttle-type SNCR reducing agent injection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207221680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398163A (en) * | 2017-09-21 | 2017-11-28 | 长沙理工大学 | A kind of scalable and shuttle-type SNCR reducing agent injection apparatus |
-
2017
- 2017-09-21 CN CN201721217351.3U patent/CN207221680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398163A (en) * | 2017-09-21 | 2017-11-28 | 长沙理工大学 | A kind of scalable and shuttle-type SNCR reducing agent injection apparatus |
| CN107398163B (en) * | 2017-09-21 | 2023-09-29 | 长沙理工大学 | Telescopic and swinging SNCR (selective non-catalytic reduction) reducing agent injection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20210921 |