CN207462962U - A kind of rotary kiln reducing agent jet atomization device - Google Patents
A kind of rotary kiln reducing agent jet atomization device Download PDFInfo
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- CN207462962U CN207462962U CN201721495922.XU CN201721495922U CN207462962U CN 207462962 U CN207462962 U CN 207462962U CN 201721495922 U CN201721495922 U CN 201721495922U CN 207462962 U CN207462962 U CN 207462962U
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- rotary kiln
- reducing agent
- speed gas
- kiln
- gas injection
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Abstract
The utility model provides a kind of rotary kiln reducing agent jet atomization device, high pressure blower is set on rotary kiln, the high-speed gas in high-speed gas injection pipe will be provided, high-speed gas injection pipe is stretched by the kiln opening on rotary kiln in kiln, tube opening is set on high-speed gas injection pipe, spray pipe is stretched by tube opening in high-speed gas injection pipe, reducing agent in reducing agent storage tank passes through pressurized circulation module, spray pipe is delivered to after metering distribution module and rotation seal joint and passes through the nozzle ejection of pipe end, enter in rotary kiln with high-speed gas, it is sufficiently mixed with material, carry out denitration.The utility model structure design advantages of simple, reducing agent are uniformly mixed with material, and material is not easy to plug nozzle in kiln, and denitration effect is good.
Description
Technical field
The utility model is related to rotary kiln denitration device fields, are filled more particularly, to a kind of rotary kiln reducing agent jet atomization
It puts.
Background technology
Largely using various rotary kilns in industry, such as cement kiln, metallurgical calcination rotary kiln, rotation incinerating kiln, rotary drying
Kiln etc. is manufactured, and rotary kiln can generate the pollutant largely based on nitrogen oxides, to ring in process of manufacture
Bring serious pollution in border.To reduce environmental pollution amount, it is necessary to carry out the denitration of rotary kiln flue gas, current widest flue gas takes off
Nitre technology is selective catalytic reduction（SCR）Method and selective non-catalytic reduction method（SNCR）, SCR method denitration efficiencies are higher, but
It invests big, system complex, operating cost height, and SCR techniques there are certain requirements furnace flue gas composition, dust
Excessively high, particle is too big or is easily bonded to part containing some, all easily causes the catalyst blockage in SCR techniques, makes SCR system can not
Normal operation in flue gas containing alkali metal element when some element-specifics, also easily causes catalyst poisoning failure, therefore, SCR
Denitrating technique is in many instances using being restricted.
SNCR denitration technology investment is low, operating cost is few, simple system, applied widely, is the rotation being commonly used
Rotary kiln denitrating technique, but the denitration efficiency of SNCR denitration technique is relatively low, when SNCR is used to carry out denitration, need to solve with
Lower problem：1. how reducing agent is sent into rotary kiln；2. why not the nozzle of reducing agent jet atomization in kiln is as by object in kiln
Material covering blocks；3. how to solve material in kiln constantly to decompose, caused by the lamination of kiln gas composition and temperature on kiln section,
The problem of causing denitration efficiency not high.
Utility model content
The technical problems to be solved in the utility model is：It is high to overcome the deficiencies of the prior art and provide a kind of denitration efficiency
Rotary kiln reducing agent jet atomization device.
Technical solution is used by the utility model solves its technical problem：
A kind of rotary kiln reducing agent jet atomization device is followed including rotary kiln, high pressure blower, reducing agent storage tank, pressurization
Ring moulds block, rotation seal joint and at least one injection apparatus, injection apparatus include high-speed gas injection pipe and spray pipe；Rotation
Kiln opening is offered on rotary kiln, high-speed gas injection pipe is inserted by kiln open at one end in rotary kiln, and the other end stretches out rotary kiln
Outside, high pressure blower is connected；The kiln outer portion of high-speed gas injection pipe offers tube opening, and spray pipe is inserted by tube opening
In high-speed gas injection pipe, towards kiln in direction injection reducing agent；Reducing agent storage tank stores reducing agent, and connects pressurized circulation mould
Block after reducing agent is pressurizeed, enters through rotation seal joint in spray pipe, spurts into and denitration is carried out in rotary kiln.
High-speed gas injection pipe is connect with high pressure blower using modes such as flange, screw thread, welding, it is preferable that using method
Orchid connection makes it have installation quickly, the advantages that being readily disassembled.
Further, the end that high-speed gas injection pipe is inserted into rotary kiln is inclined opening structure, and end angle is backwards to material
The direction tumbled prevents the feed blocking high-speed gas injection nozzle tumbled.
Further, high-speed gas injection pipe be inserted into rotary kiln end height be located at material face and rotary kiln median plane it
Between.
Further, the multiple injection apparatus is evenly distributed on a certain cross section of rotary kiln, and high-speed gas injection
Pipe gas outlet offsets one from another relative to cross-section center point, and rotation conveying pipeline connects multiple spray pipes, high pressure drum respectively
Wind turbine connects multiple high-speed gas injection pipes respectively.
Preferably, the rotary kiln cross-section temperature section for setting multiple injection apparatus is 800 ~ 1100 DEG C, to reach SNCR
The suitable temperature of reaction, is smoothed out denitrification process.
Further, spray pipe end is located in high-speed gas injection pipe, and its end is installed with atomizer.It will spraying
Pipe end is arranged in high-speed gas injection pipe, can be effectively prevent material directly contact atomizer in kiln, be caused nozzle
Pickup blocks and abrasion.
Further, the high-speed gas injection pipe bleed pressure that high pressure blower provides is more than 15KPa, and injection flow velocity is more than
30m/s.Under the drive of high-speed gas of the reducing agent that spray pipe sprays in high-speed gas injection pipe, into rotary kiln,
It is sufficiently mixed with the rotation and material of rotary kiln, carries out denitration.When setting multiple injection apparatus on rotary kiln, multiply is with also
The air-flow of former agent forms eddy flow on rotary kiln section, can effectively eliminate backlayering phenomenon in kiln so that denitrification reducing agent
It is sufficiently mixed with flue gas in kiln, obtains high denitration efficiency.
Further, high pressure blower is mounted and fixed on rotary kiln, is rotated with rotary kiln, and high pressure blower passes through
Sliding ring type is powered for electric installation.Sliding ring type is stable, reliable for electric installation power supply performance, can effectively solve the problem that high pressure blower rotates
The problem of power supply.
The beneficial effects of the utility model：A kind of rotary kiln reducing agent jet atomization device provided by the utility model, knot
The nozzle end of spray pipe is arranged in high-speed gas injection pipe by structure reasonable design, under the drive of high-speed gas, by nozzle
The reducing agent band of ejection is sent to rotary kiln, is sufficiently mixed with material in kiln, realizes denitrification process, and nozzle is arranged on high-speed gas
In playpipe, it is possible to prevente effectively from material directly contact nozzle, causes the contamination and blocking of nozzle；Meanwhile rotary kiln can basis
It needs to set multiple injection apparatus, multiply air-flow sprays simultaneously, forms eddy flow in kiln, makes gas temperature and composition on kiln section
More uniformly, denitration effect is improved.
Description of the drawings
Fig. 1-it is a kind of 1 rotary kiln reducing agent jet atomization apparatus structure schematic diagram of the utility model embodiment；
Fig. 2-it is Fig. 1 high speed gas injection tube assembly magnification diagrams；
Fig. 3-it is 2 injection apparatus schematic cross-section of embodiment；
1-rotary kiln, 11-kiln opening, 2-slip ring power supply device, 3-high-speed gas injection pipe, 31-inclined opening structure,
32-connecting flange, 33-tube opening, 4-high pressure blower, 5-rotation conveying pipeline, 6-rotation seal joint, 7-fixation are defeated
Expects pipe, 8-pressurized circulation module, 9-reducing agent storage tank, 10-spray pipe, 101-atomizer.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Embodiment
With reference to attached drawing, a kind of rotary kiln reducing agent jet atomization device includes rotary kiln 1, slip ring power supply device 2, high speed gas
Body playpipe 3, high pressure blower 4, rotation conveying pipeline 5, spray pipe 10, rotation seal joint 6, reducing agent storage tank 9.
Slip ring power supply device 2 is arranged on 1 periphery of rotary kiln, and the electricity that external loading power supply provides is transferred to rotary kiln
The high pressure blower 4 that 1 periphery is fixedly mounted provides the electric energy of the work of high pressure blower 4.High pressure blower 4 passes through connecting flange
32 connection high-speed gas injection pipes 3,3 one end of high-speed gas injection pipe is located at outside rotary kiln 1, and the other end on rotary kiln 1 by opening
If kiln opening 11 stretch into rotary kiln 1, the end of high-speed gas injection pipe 3 is inclined opening structure 31, and end angle is backwards to object
Expect the direction that tumbles, high-speed gas injection pipe 3 be inserted into rotary kiln 1 end height be located at material face and 1 median plane of rotary kiln it
Between.
One end that high-speed gas injection pipe 3 is located at outside rotary kiln 1 offers tube opening 33, and spray pipe 10 passes through tube opening
After 33 stretch into 3 center line of high-speed gas injection pipe, direction in kiln is bent towards, 10 end of spray pipe is provided with atomizer 101, mist
Change nozzle 101 to be located in high-speed gas injection pipe 3, the other end of spray pipe 10 stretches out high-speed gas injection pipe 3, and pass through spiral shell
The mode connect connects rotation conveying pipeline 5, and rotation conveying pipeline 5 passes through 1 wall of rotary kiln and is pierced by rotary kiln 1, connection rotation from the other end
Turn seal nipple 6, fixed conveying pipeline 7 is connected by rotation seal joint, spray pipe 10 is with 1 synchronous rotary of rotary kiln.
Reducing agent storage tank 9 stores reducing agent, and connects pressurized circulation module 8, after reducing agent is pressurizeed, passes through fixed conveying
Pipe 7 is conveyed passes to rotation conveying pipeline 5 through rotation seal joint 6, and injection spray pipe is transferred to across rotary kiln 1 through rotating conveying pipeline 5
Road 10, and the atomizer 101 for passing through 10 end of spray pipe ejects, and enters with high-speed gas and denitration is carried out in rotary kiln 1.
Embodiment 2
With reference to attached drawing, the present embodiment 2 is only following different from embodiment 1：
Injection apparatus is 3, and high pressure blower 4 connects 3 high-speed gas injection pipes 3, each high speed by main air duct
A spray pipe 10 is inserted into gas injection tube 3, multiple spray pipes 10 connect a common rotation conveying pipeline 5, at a high speed
Gas injection tube 3 is distributed on 1 same section of rotary kiln, and high-speed gas injection pipe gas outlet is relative to cross section midpoint
It offsets one from another, reducing agent spraying is sprayed into multiple gas injection tubes in rotary kiln, and 3 strands of air-flows to offset one from another produce in rotary kiln
Raw eddy flow, so as to make kiln gas mixing more abundant, denitration efficiency greatly improves.
The operation principle and using method of the utility model：The electricity that slip ring power supply device 2 provides external loading power supply
It transfers on the high pressure blower 4 of rotary kiln periphery fixed installation, the electric energy of the work of high pressure blower 4, high pressure blower 4 is provided
High-speed gas injection pipe 3 is connected, and provides pressure more than 15KPa, injection flow velocity is more than 30m/s high-speed gas, reducing agent storage tank
Reducing agent in 9 is pressurizeed by pressurized circulation module 8, after pressurization, is delivered to rotation conveying pipeline 5 through fixed conveying pipeline 7, is worn
It crosses rotary kiln 1 and is transferred to spray pipe 10, and pass through atomizer 101 and eject, the atomization reducing agent ejected is in high speed gas
It under the action of body, into rotary kiln 1, is uniformly mixed with the material in kiln and air, carries out denitration.
The end of high-speed gas injection pipe 3 is inclined opening structure 31, and end angle is backwards to the direction that material tumbles, high speed
The end height that gas injection tube 3 is inserted into rotary kiln 1 is located between 1 median plane of material face and rotary kiln, and atomizer 101 is located at
In high-speed gas injection pipe 3, material directly contact nozzle in kiln can be effectively prevent, nozzle pickup is caused to block.
The injection apparatus of the utility model can be distributed on the same section of rotary kiln, mounting means with other quantity
With embodiment 2.The change of more than technical characteristic, those skilled in the art be appreciated that and implemented by word description, therefore not
It is separately illustrated again as attached drawing.
Claims (7)
1. a kind of rotary kiln reducing agent jet atomization device, it is characterised in that：Including rotary kiln, high pressure blower, reducing agent storage
Tank, pressurized circulation module, rotation seal joint and at least one injection apparatus, injection apparatus include high-speed gas injection pipe and spray
Mist pipeline；Kiln opening is offered on rotary kiln, high-speed gas injection pipe is inserted by kiln open at one end in rotary kiln, and the other end is stretched
Go out outside rotary kiln, connect high pressure blower；The kiln outer portion of high-speed gas injection pipe offers tube opening, and spray pipe passes through pipe
Opening be inserted into high-speed gas injection pipe in, towards kiln in direction injection reducing agent；Reducing agent storage tank stores reducing agent, and connects and add
Loop module is pressed, after reducing agent is pressurizeed, is entered in spray pipe through rotation seal joint, is spurted into rotary kiln and taken off
Nitre.
2. a kind of rotary kiln reducing agent jet atomization device as described in claim 1, it is characterised in that：High-speed gas injection pipe
The end being inserted into rotary kiln is inclined opening structure, and end angle is backwards to the direction that material tumbles.
3. a kind of rotary kiln reducing agent jet atomization device as claimed in claim 1 or 2, it is characterised in that：High-speed gas sprays
It penetrates pipe and is inserted into the end height of rotary kiln between material face and rotary kiln median plane.
4. a kind of rotary kiln reducing agent jet atomization device as described in claim 1, it is characterised in that：The multiple injection dress
It puts on a certain cross section for being evenly distributed on rotary kiln, and high-speed gas injection pipe gas outlet is relative to cross-section center point
It offsets one from another, rotation conveying pipeline connects multiple spray pipes respectively, and high pressure blower connects multiple high-speed gas injection pipes respectively.
5. a kind of rotary kiln reducing agent jet atomization device as described in claim 1, it is characterised in that：Spray pipe end position
In in high-speed gas injection pipe, and its end is installed with atomizer.
6. a kind of rotary kiln reducing agent jet atomization device as described in claim 1, it is characterised in that：High pressure blower provides
High-speed gas injection pipe bleed pressure be more than 15KPa, injection flow velocity be more than 30m/s.
7. a kind of rotary kiln reducing agent jet atomization device as described in claim 1, it is characterised in that：High pressure blower is installed
And be fixed on rotary kiln, it is rotated with rotary kiln, high pressure blower is powered by sliding ring type for electric installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721495922.XU CN207462962U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln reducing agent jet atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721495922.XU CN207462962U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln reducing agent jet atomization device |
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| CN207462962U true CN207462962U (en) | 2018-06-08 |
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| CN201721495922.XU Active CN207462962U (en) | 2017-11-10 | 2017-11-10 | A kind of rotary kiln reducing agent jet atomization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170245A (en) * | 2019-06-15 | 2019-08-27 | 南京碧霞环保工程有限公司 | A kind of rotary kiln flue gas denitrification system and device |
-
2017
- 2017-11-10 CN CN201721495922.XU patent/CN207462962U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170245A (en) * | 2019-06-15 | 2019-08-27 | 南京碧霞环保工程有限公司 | A kind of rotary kiln flue gas denitrification system and device |
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