CN207688642U - A kind of energy saving combustion decomposition stove of classification - Google Patents
A kind of energy saving combustion decomposition stove of classification Download PDFInfo
- Publication number
- CN207688642U CN207688642U CN201721469057.1U CN201721469057U CN207688642U CN 207688642 U CN207688642 U CN 207688642U CN 201721469057 U CN201721469057 U CN 201721469057U CN 207688642 U CN207688642 U CN 207688642U
- Authority
- CN
- China
- Prior art keywords
- tapered portion
- vertical component
- component effect
- energy saving
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model has opened a kind of energy saving combustion decomposition stove of classification, including furnace body, and the rotary kiln being connect with bottom of furnace body；C is installed on the outside of the vertical component effect4Cylinder tremie pipe；The vertical component effect is connected with tertiary-air pipe with its junction of tapered portion；It is respectively arranged with multiple burners on the furnace body, is made of two top burners and two lower burners；Two top burners are set to C4The middle and lower part position of its air inlet of cylinder its spreading platform of tremie pipe Yu tertiary-air pipe；Two lower burners are distributed around tapered portion periphery in rotational symmetry；The energy saving combustion decomposition stove of classification of the utility model, prevents its tapered portion of dore furnace from skinning occur so that industry kiln operation is more stablized；Improve coal dust firing speed and efficiency of combustion；And be conducive to the dispersion of material and the mixing with air-flow, coal dust, and avoid raw material from collapsing and expect the generation of phenomenon.
Description
Technical field
The utility model is related to a kind of dore furnaces, and in particular to a kind of energy saving combustion decomposition stove of classification belongs to Industrial Stoves
Technical field.
Background technology
The process of Cement clinker buring is a typical pyroprocess, and fuel burns in rotary kiln generates high temp fire
The nitrogen oxides of flame, diversified forms also generates therewith；Dore furnace is the Cement clinker buring another high temperature in addition to rotary kiln in the process
Equipment, 60% or so of consumption firing institute calorific requirement；Currently, people are being limited by the functional structure design to dore furnace in stove
On the basis of NO_x formation, the environment for being suitable for nitrogen oxides reduction is created, and then reduce the nitrogen oxygen of entire firing system
Compound is discharged；In existing dore furnace, the tertiary-air pipe into dore furnace is all tangentially to enter to divide from the bottom end of upper furnace body cylinder
Stove is solved, coal injection pipe is mounted on the upper furnace body of dore furnace, and the coal dust that coal injection pipe sprays is entered directly into tertiary air and carried out fully
Burning；The flow field state of this structure is tertiary air after entering dore furnace, is spurted quickly into dore furnace with by hypocentrum
Kiln exit gas mixes, and forms complicated unstable gas flowfield, makes the ratio of the coal dust firing inside coal injection pipe penetrating dore furnace
Relatively fully, burning is not easily formed reducing atmosphere；Due to kiln, furnace system be discharged flue gas in nitrogen oxides content compared with
Height is easy to pollute air, and can be with the nitrogen oxides NO in kiln exit gas by reducing agentxIt reacts, by NOx
It is reduced into N2Etc. free of contamination inert gas, the NO in cement production process is realizedxEmission reduction；But traditional dore furnace is due to inside
Burning is more abundant, it is not easy to form reducing atmosphere to generate CO, CH4、H2, the reducing agents such as HCN and fixed carbon, to drop
The content of nitrogen oxides in low kiln exit gas is increasingly not suitable for the requirement to dore furnace new function.
Utility model content
A kind of in order to solve the above problems, the utility model proposes the energy saving combustion decomposition stove of classification, prevents its cone of dore furnace
There is skinning in shape portion so that industry kiln operation is more stablized；Improve coal dust firing speed and efficiency of combustion；And be conducive to
The dispersion of material and mixing with air-flow, coal dust, and raw material is avoided to collapse the generation of material phenomenon.
The energy saving combustion decomposition stove of classification of the utility model, including furnace body, and the rotary kiln that is connect with bottom of furnace body；It is described
Furnace body is made into integration by vertical component effect and tapered portion；C is installed on the outside of the vertical component effect4Cylinder tremie pipe；The vertical component effect and taper
Its junction of portion is connected with tertiary-air pipe；It is separately installed with more coal injection pipes on the outside of the vertical component effect and tapered portion；The taper
Its kiln tail smoke-box of its bottom of portion and rotary kiln is connect；C is installed on the outside of the kiln tail smoke-box5Cylinder tremie pipe；Divide on the furnace body
It is not provided with multiple burners, is made of two top burners and two lower burners；Two top burners are set to
C4The middle and lower part position of its air inlet of cylinder its spreading platform of tremie pipe Yu tertiary-air pipe；Two lower burners are around tapered portion periphery
It is distributed in rotational symmetry.
Further, the coal injection pipe for being located at the vertical component effect is radially distributed in 180 ° along vertical component effect；Positioned at tapered portion
The coal injection pipe along tapered portion radially in 180 ° distribution.
As preferred embodiment, the coal injection pipe for being located at the vertical component effect is radially distributed in 90 ° along vertical component effect；Position
It is radially distributed in 90 ° along tapered portion in the coal injection pipe of tapered portion, the position of coal injection pipe is adjusted, coal can be effectively avoided
The position that powder is influenced in tertiary air oxygen-rich area and tangential gas flow is burnt, and prevents its tapered portion of dore furnace from skinning occur.
As preferred embodiment, the C5Cylinder its blanking point of tremie pipe is maintained at same flat with its slope of kiln tail smoke-box
On face, the reentrainment of dust taken up to reduce material and air-flow counter motion reduces the dust concentration into decomposition furnace gases.
As preferred embodiment, connected by uptake flue between the tapered portion and kiln tail smoke-box；The taper
Its intersection is provided with lifting boss with uptake flue in portion, is conducive to the dispersion of material and the mixing with air-flow, coal dust, and avoid
Raw material, which collapse, expects the generation of phenomenon.
As preferred embodiment, the tapered portion is burning reducing zone, and the junction of its bottom and uptake flue
It is provided with curved corner, uptake flue and tapered portion use side are rounded structure, and extend the path of ascending air, can effectively subtract
Swirling motion inside the cone of weak tapered portion, guarantee do not cause a large amount of raw material or pulverized coal particle caused by swirling motion under
Revolve and take at the cone necking of tapered portion, it is ensured that do not generate the material that collapses, the phenomenon that flushing enters kiln, improve coal dust firing speed and
Efficiency of combustion.
Compared with prior art, the energy saving combustion decomposition stove of the classification of the utility model, can effectively avoid
It burns at the position that coal dust is influenced in tertiary air oxygen-rich area and tangential gas flow；And reduces material and taken up with air-flow counter motion
Reentrainment of dust, reduce the dust concentration into decomposition furnace gases, prevent its tapered portion of dore furnace from skinning occur so that industry
Kiln operation is more stablized；The swirling motion inside the cone of tapered portion can effectively be weakened, improve coal dust firing speed and combustion
Burn efficiency；In tapered portion and uptake flue its intersection, lifting boss is set, be conducive to material dispersion and with air-flow, coal dust
Mixing, and avoid raw material from collapsing and expect the generation of phenomenon.
Description of the drawings
Fig. 1 is the overall structure diagram of the embodiments of the present invention 1.
Fig. 2 is the C of the utility model5Cylinder tremie pipe mounting structure schematic diagram.
Fig. 3 is the coal injection pipe mounting structure schematic diagram of the embodiments of the present invention 2.
Each component in attached drawing is labeled as：1- furnace bodies, 2- rotary kilns, 3-C4Cylinder tremie pipe, 4- tertiary-air pipes, 5- coal powder injections
Pipe, 6-C5Cylinder tremie pipe, 7- top burners, 8- lower burners, 9- lifting boss, 10- curved corners, 11- vertical component effects,
12- tapered portion, 21- kiln tail smoke-boxes, 22- uptake flues, 31- spreading platforms, 41- air inlets.
Specific implementation mode
Embodiment 1：
As depicted in figs. 1 and 2, the energy saving combustion decomposition stove of the classification of the utility model, including furnace body 1, and with 1 bottom of furnace body
The rotary kiln 2 of connection；The furnace body 1 is made into integration by vertical component effect 11 and tapered portion 12；11 outside of the vertical component effect is equipped with C4
Cylinder tremie pipe 3；The vertical component effect 11 is connected with tertiary-air pipe 4 with its junction of tapered portion 12；The vertical component effect 11 and tapered portion
12 outsides are separately installed with more coal injection pipes 5；Its kiln tail smoke-box 21 of its bottom of the tapered portion 12 and rotary kiln 2 is connect；It is described
21 outside of kiln tail smoke-box is equipped with C5Cylinder tremie pipe 6；It is respectively arranged with multiple burners on the furnace body 1, is fired by two tops
Burner 7 and two lower burners 8 are constituted；Two top burners 7 are set to C4Cylinder its spreading platform 31 of tremie pipe 3 and tertiary air
The middle and lower part position of its air inlet 41 of pipe 4；Two lower burners 8 are distributed around 12 periphery of tapered portion in rotational symmetry.
The coal injection pipe 5 positioned at the vertical component effect 11 is radially distributed in 180 ° along vertical component effect；Positioned at the institute of tapered portion 12
Coal injection pipe 5 is stated along tapered portion radially in 180 ° of distributions.
The C5Cylinder its blanking point of tremie pipe 6 is kept in the same plane with its slope of kiln tail smoke-box 21.
It is connected by uptake flue 22 between the tapered portion 12 and kiln tail smoke-box 21；The tapered portion 12 and uptake flue
22 its intersection are provided with lifting boss 9.
The tapered portion 12 is burning reducing zone, and its bottom and the junction of uptake flue 22 are provided with curved corner
10。
Embodiment 2：
As shown in figure 3, the energy saving combustion decomposition stove of the classification of the utility model, structure is substantially the same manner as Example 1,
In, the coal injection pipe 5 for being located at the vertical component effect 11 is radially distributed in 90 ° along vertical component effect；Positioned at the coal powder injection of tapered portion 12
Pipe 5 is along tapered portion radially in 90 ° of distributions；The position of coal injection pipe 5 is adjusted, can effectively avoid coal dust in tertiary air oxygen-rich area
The position burning that domain and tangential gas flow influence, prevents its tapered portion 12 of dore furnace from skinning occur.
The energy saving combustion decomposition stove of classification of the utility model establishes denitration in dore furnace its tapered portion and burns reducing zone,
A part for dore furnace coal is uniformly arrived in the region, makes its anoxycausis to generate CO, CH4、H2, HCN and fixed carbon etc.
Reducing agent；These reducing agents and the NO in kiln exit gasxIt reacts, by NOxIt is reduced into N2Etc. free of contamination inert gas；This
Outside, the coal dust in dore furnace burns under anoxic conditions, also inhibits itself fuel type NOxIt generates, to realize manufacture of cement
NO in the processxEmission reduction；Wherein, burner divides upper layer and lower layer 4 points of arrangements, in the smaller region structure denitration reduction of tapered portion
Area, coal dust multiple spot enter, increase combustion space of the coal dust in dore furnace, ensure that decomposition furnace outlet coal dust can fully fire
It burns；It is simultaneously that two lower burners are in a rotationally symmetrical arrangement, the Combustion Flow Field of rotation is formed in tapered portion, is conducive to denitration reducing zone
Formation, avoid reducing zone generate high temperature and cause skinning；C5Cylinder its blanking point of tremie pipe is maintained at same flat with smoke-box slope
Face, the reentrainment of dust taken up to reduce material and air-flow counter motion reduce the dust concentration into decomposition furnace gases；Rise
Flue and tapered portion use side are rounded structure, and extend the path of ascending air, can effectively weaken inside the cone of tapered portion
Swirling motion, ensure not cause a large amount of raw material or pulverized coal particle caused by swirling motion backspin and take the cone of tapered portion to
At body necking, it is ensured that do not generate the material that collapses, the phenomenon that flushing enters kiln, improve coal dust firing speed and efficiency of combustion；In tapered portion
It is provided with lifting boss with uptake flue intersection, is conducive to the dispersion of material and the mixing with air-flow, coal dust, and avoid raw material
The generation for material phenomenon of collapsing.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to which its technology is determined according to right
Property range.
Claims (6)
1. a kind of being classified energy saving combustion decomposition stove, including furnace body, and the rotary kiln being connect with bottom of furnace body；It is characterized in that：Institute
Furnace body is stated to be made into integration by vertical component effect and tapered portion；C is installed on the outside of the vertical component effect4Cylinder tremie pipe；The vertical component effect and cone
Its junction of shape portion is connected with tertiary-air pipe；It is separately installed with more coal injection pipes on the outside of the vertical component effect and tapered portion；The cone
Its kiln tail smoke-box of its bottom of shape portion and rotary kiln is connect；C is installed on the outside of the kiln tail smoke-box5Cylinder tremie pipe；On the furnace body
Multiple burners are respectively arranged with, are made of two top burners and two lower burners；The two top burner settings
In C4The middle and lower part position of its air inlet of cylinder its spreading platform of tremie pipe Yu tertiary-air pipe；Two lower burners are outside tapered portion
It encloses and is distributed in rotational symmetry.
2. the energy saving combustion decomposition stove of classification according to claim 1, it is characterised in that：Positioned at the spray of the vertical component effect
Coal pipe is along vertical component effect radially in 180 ° of distributions；The coal injection pipe positioned at tapered portion is radially distributed in 180 ° along tapered portion.
3. the energy saving combustion decomposition stove of classification according to claim 1, it is characterised in that：Positioned at the spray of the vertical component effect
Coal pipe is along vertical component effect radially in 90 ° of distributions；The coal injection pipe positioned at tapered portion is radially distributed in 90 ° along tapered portion.
4. the energy saving combustion decomposition stove of classification according to claim 1, it is characterised in that：The C5Its blanking point of cylinder tremie pipe
It is kept in the same plane with its slope of kiln tail smoke-box.
5. the energy saving combustion decomposition stove of classification according to claim 1, it is characterised in that：The tapered portion and kiln tail smoke-box it
Between connected by uptake flue；Its intersection is provided with lifting boss to the tapered portion with uptake flue.
6. the energy saving combustion decomposition stove of classification according to claim 1, it is characterised in that：The tapered portion is that burning restores
Area, and its bottom and the junction of uptake flue are provided with curved corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721469057.1U CN207688642U (en) | 2017-11-07 | 2017-11-07 | A kind of energy saving combustion decomposition stove of classification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721469057.1U CN207688642U (en) | 2017-11-07 | 2017-11-07 | A kind of energy saving combustion decomposition stove of classification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207688642U true CN207688642U (en) | 2018-08-03 |
Family
ID=62988656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721469057.1U Expired - Fee Related CN207688642U (en) | 2017-11-07 | 2017-11-07 | A kind of energy saving combustion decomposition stove of classification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207688642U (en) |
-
2017
- 2017-11-07 CN CN201721469057.1U patent/CN207688642U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107606606B (en) | Central powder feeding omega-shaped industrial pulverized coal boiler adopting flue gas recirculation | |
| CN102777894B (en) | Reverse powder injection combustor | |
| CN107559817A (en) | A kind of swirling pulverized coal combustion device and method using flue gas recirculation | |
| CN107606613A (en) | The low nitrogen rotational flow gas-fired combustor of flue gas recirculation built in gas-air Accurate Classification | |
| CN107477573A (en) | A kind of heart in the burner for industrial coal powder boiler sprays the burner of ammonia | |
| CN110849138A (en) | Cement kiln denitration device, cement kiln and cement kiln denitration process | |
| CN104048502B (en) | A kind of burning-aid method of cement rotary kiln burner oxygen-enriching device | |
| CN107525067A (en) | A kind of center feeding rotational flow coal dust burner for preventing water-cooling wall slagging | |
| CN207527582U (en) | The low nitrogen rotational flow gas-fired combustor of flue gas recirculation built in gas-air Accurate Classification | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN206145669U (en) | Swirling flow pulverized coal burner | |
| CN106196020A (en) | The tertiary air of pulverized-coal fired boiler is made into the method and device that First air carries out burning | |
| CN205939147U (en) | Steady flame formula combustor | |
| CN204756916U (en) | Brown coal cyclone burner with prevent burnt wind | |
| CN107559822A (en) | Center feeding rotational flow coal dust burner and burnout degree arrangement | |
| CN207688642U (en) | A kind of energy saving combustion decomposition stove of classification | |
| CN208418734U (en) | A kind of low-NOx combustor for natural gas and coal dust | |
| CN107763663A (en) | Solid fuel combustion apparatus and its application method | |
| CN106196054A (en) | The cyclone classification of a kind of center water conservancy diversion regulation and the burner of temperature-controllable | |
| CN105509469A (en) | Low-oxynitride decomposition furnace with precombustion furnace | |
| CN109099425A (en) | A kind of interior super low NO of circulation of flue gas | |
| CN109631020A (en) | Combine denitrification apparatus in a kind of full load furnace suitable for industrial coal powder boiler | |
| CN206274163U (en) | Coal burner | |
| CN203744715U (en) | Staged burning decomposing furnace | |
| CN209484602U (en) | A kind of interior super low NO of circulation of flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180803 Termination date: 20211107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |