CN114992640A - Multi-channel mixed fuel combustor for rotary kiln - Google Patents
Multi-channel mixed fuel combustor for rotary kiln Download PDFInfo
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- CN114992640A CN114992640A CN202210562815.3A CN202210562815A CN114992640A CN 114992640 A CN114992640 A CN 114992640A CN 202210562815 A CN202210562815 A CN 202210562815A CN 114992640 A CN114992640 A CN 114992640A
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- channel
- fuel
- contact
- air
- rotary kiln
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to the technical field of burners and discloses a multi-channel mixed fuel burner for a rotary kiln, which comprises an air channel, wherein the air channel is formed by sleeving a plurality of pipelines, the pipelines are respectively a fuel channel, a rotational flow air channel and an axial flow air channel from inside to outside, a spray head is fixedly arranged at the position of an air outlet of the air channel, and a fixing piece is arranged in an inner cavity of the spray head. According to the invention, through the arrangement of the contact head and the airflow channel, when fuel enters the nozzle from the air channel, the fuel can be contacted with the wind-receiving conical surface of the contact head, so that the fuel generates oblique movement along the conical surface and is further contacted with rotational flow airflow, the probability of mixing fuel particles with the rotational flow airflow is increased, and the combustion effect of the fuel in the rotary kiln is indirectly improved.
Description
Technical Field
The invention relates to the technical field of burners, in particular to a multi-channel mixed fuel burner for a rotary kiln.
Background
The burner is a device for ejecting and mixing fuel and air in a certain way, and is suitable for the fields of building materials, chemical engineering, metallurgy and the like, and in the building materials field, the burner is generally used in a cement rotary kiln for calcining cement clinker.
When a burner in the existing cement rotary kiln works, fuel (such as powdery material and gas material) is sprayed to a nozzle through a fuel channel, meanwhile, rotational flow airflow and axial flow airflow are synchronously sprayed to the nozzle, in the process, the fuel is positioned in the center of the nozzle, the rotational flow airflow is positioned outside the fuel, so that the rotational flow airflow is mixed with fuel particles, in addition, the axial flow airflow is positioned outside the rotational flow airflow and further plays a role in stabilizing the flow, then, the mixture enters the rotary kiln and burns, so that cement is calcined into clinker, but in the process, as the fuel has certain axial impact force when entering the nozzle, the fuel particles are not easily wrapped by the rotational flow airflow, the mixing degree of the fuel and the air is low, and the combustion effect of the fuel in the cement rotary kiln is influenced.
Disclosure of Invention
Aiming at the defects of the existing burner in the use process in the background technology, the invention provides a multi-channel mixed fuel burner for a rotary kiln, which has the advantages of increasing the probability of mixing fuel and air and improving the fuel combustion effect, and solves the technical problems in the background technology.
The invention provides the following technical scheme: a multi-channel mixed fuel burner for a rotary kiln comprises an air channel, wherein the air channel is formed by mutually sleeving a plurality of pipelines, the pipelines respectively comprise a fuel channel, a rotational flow air channel and an axial flow air channel from inside to outside, a nozzle is fixedly arranged at the position of an air outlet of the air channel, a fixing piece is arranged in an inner cavity of the nozzle, a fixing rod is fixedly arranged between the outer side surface of the fixing piece and the inner wall of the nozzle, a contact head is arranged in the inner cavity of the nozzle and close to the air channel, a wind-receiving conical surface is arranged on the side surface, close to the air channel, of the contact head and is a conical inclined surface, the air channel arranged at an inclined angle is arranged in the contact head, ports at two ends of the air channel are respectively arranged on the straight side surface and the wind-receiving conical surface of the contact head, and the straight side surface of the contact head and the outer side surface of the fixing piece are in smooth transition arrangement, the contact head is arranged corresponding to the fuel channel.
Preferably, the outer side surface of the fixing piece is a tapered inclined surface, and the cross-sectional area of the tapered inclined surface is gradually increased from the air channel to the direction of the spray head.
Preferably, the air flow channels are arranged in a spiral shape at equal intervals, the spiral direction of the air flow channels is the same as the rotating direction of the rotational flow air flow, slide bars are fixedly mounted on the side faces, away from the air flow channels, of the contact heads, slide cavities are formed in the fixing pieces, and the slide block ends of the slide bars are movably connected with the slide cavities.
Preferably, the side that the mounting is close to the shower nozzle discharge gate is gone up to rotate and is installed and change the fan, the central point that changes the fan puts and has seted up the thread groove, the screw rod is installed to the screw thread in the thread groove for but screw rod reciprocating motion, the toper inclined plane of mounting with change the fan and correspond the setting with whirl air current passageway.
Preferably, the screw rod is close the one end fixed mounting of mounting and is had the gag lever post, the inside position of revolving the fan of being close to of mounting has seted up spacing notch, spacing notch and gag lever post form movable joint, spacing notch can be passed to the other end of gag lever post to contact with the slider end of slide bar.
The invention has the following beneficial effects:
1. according to the invention, through the arrangement of the contact head and the airflow channel, when fuel enters the nozzle from the air channel, the fuel can be contacted with the wind-receiving conical surface of the contact head, so that the fuel generates oblique movement along the conical surface and is further contacted with rotational flow airflow, the probability of mixing fuel particles with the rotational flow airflow is increased, and the combustion effect of the fuel in the rotary kiln is indirectly improved.
2. According to the invention, through the arrangement of the contact head and the fixing piece and the conical surface of the fixing piece, the fuel moving along the conical surface can further contact the rotational flow airflow, so that the mixing effect of the fuel and the air is improved, meanwhile, through the arrangement of the contact head and the conical surface of the fixing piece, the pressure of the airflow is increased when the airflow passes through the conical surface, and after the subsequent mixture is sprayed out of the spray head, the airflow can contact with more combustion-supporting gas in the rotary kiln, so that the combustion effect of the fuel is improved.
3. According to the invention, through the arrangement of the rotating fan and the contact head, the rotational flow air flow passing through the fixing part can contact with the rotating fan, so that the rotating fan drives the screw rod to reciprocate, the pushing head intermittently pushes the contact head to move in a direction opposite to the axial movement direction of the fuel, the axial impact force of the fuel is relieved, and fuel particles can be effectively wrapped by the rotational flow air flow, thereby increasing the probability of mixing the fuel and the air.
4. According to the invention, through the arrangement of the airflow channel and the contact head, the airflow channel is spirally arranged at equal intervals, so that when fuel passes through the airflow channel, the contact head is driven to rotate, the fuel sprayed from the airflow channel can rotate in the same direction as the rotational direction of rotational flow airflow, further fuel particles are mixed with air, meanwhile, the fuel in contact with the wind cone surface of the contact head is subjected to circumferential rotating force applied by the contact head, further partial axial impact force of the fuel is counteracted, and the fuel is further effectively wrapped by the rotational flow airflow.
Drawings
FIG. 1 is a schematic view of the internal structure of the showerhead of the present invention;
FIG. 2 is a schematic sectional elevation view of the structure of the present invention;
FIG. 3 is an enlarged view of a portion of the structure shown in FIG. 2;
fig. 4 is a schematic view of the air duct of the present invention.
In the figure: 1. an air duct; 2. a spray head; 3. a fixing member; 4. fixing the rod; 5. a contact head; 6. an air flow channel; 7. a slide bar; 8. a slide chamber; 9. rotating the fan; 10. a screw; 11. a limiting rod; 12. limiting notch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 4, a multi-channel mixed fuel burner for a rotary kiln comprises an air channel 1, wherein the air channel 1 is formed by sleeving a plurality of pipelines, the pipeline at the innermost position is a fuel channel, the pipeline at the middle position is a rotational flow air channel, the pipeline at the outermost position is an axial flow air channel, a nozzle 2 is fixedly arranged at the air outlet of the air channel 1, a fixing member 3 is arranged at the center of the inner cavity of the nozzle 2, a fixing rod 4 is welded between the outer side surface of the fixing member 3 and the inner wall of the nozzle 2 and used for fixing the nozzle 2 and the fixing member 3 together, a contact head 5 is arranged at one side of the fixing member 3 facing the air channel 1 in the inner cavity of the nozzle 2, the side surface of the contact head 5 facing the air channel 1 is a wind-receiving conical surface which is arranged in a conical inclined surface, an air channel 6 is arranged in the contact head 5 in an inclined manner, and one end port of the air channel 6 is arranged on the wind-receiving conical surface, the other end port of the airflow channel 6 is arranged on the straight side surface of the contact 5, the straight side surface of the contact 5 and the outer side surface of the fixing part 3 are arranged in a smooth transition way, the contact 5 is arranged corresponding to the fuel channel, when fuel and air enter the nozzle 2 from the air duct 1, the fuel contacts with the wind cone of the contact head and the straight side surface, wherein the fuel contacting with the wind cone surface can move to the rotational flow air current along the inclined surface, so that the probability of mixing the fuel particles and the rotational flow air current is increased, thereby indirectly improving the combustion effect of the fuel in the rotary kiln, and simultaneously, during the process of contacting the fuel with the wind cone, part of the fuel can pass through the airflow channel 6 and is blown out from the straight side surface of the contact head 5, so that the fuel will impact the fuel passing through the flat side to urge the fuel to approach the swirling air flow, thereby increasing the probability of mixing of the two.
Referring to fig. 2, the outer side surface of the fixing member 3 is a tapered inclined surface, the cross-sectional area of the tapered inclined surface is gradually increased from the air duct 1 to the spray head 2, the apertures in the inner cavity of the spray head 2 at the two positions are reduced by the setting of the fixing member 3 and the air-receiving conical surface, and further when the air flow passes through the positions, the air pressure is increased, which results in that the final air flow is sprayed out at a longer distance, so that the contact degree with the combustion-supporting gas in the rotary kiln is increased, and the combustion effect is improved.
The air flow channels 6 are arranged in a spiral shape at equal intervals, the spiral direction of the air flow channels 6 is the same as the rotating direction of the rotational flow air flow, slide rods 7 are welded on the side surface of the contact head 5 facing one side of the fixing piece 3, a slide cavity 8 is formed in the fixing piece 3, the slide rod ends of the slide rods 7 extend into the slide cavity 8 and are movably connected with the slide cavity 8, when fuel passes through the air flow channels 6, rotating force is applied to the contact head 5 to enable the contact head 5 to rotate, the rotating direction is the same as the rotating direction of the rotational flow air flow, finally, the fuel sprayed out of the air flow channels 6 can rotate in the same rotating direction as the rotational flow air flow to enable fuel particles to be mixed with air, meanwhile, due to the rotation of the contact head 5, the fuel in contact with the wind cone surface of the contact head 5 can be subjected to the circumferential rotating force applied by the contact head 5 to further offset partial axial impact force of the fuel, and the fuel can be effectively wrapped by the rotational flow air flow, thereby increasing the probability that the two will mix.
Fixing piece 3 rotates on the side of wind channel 1 one side dorsad and installs and changes fan 9, the toper inclined plane that the blade that changes fan 9 stretches out fixing piece 3, the central point that changes fan 9 puts transversely to run through and has seted up the thread groove, screw rod 10 is installed to the screw thread in the thread groove, screw rod 10 can be reciprocating motion in the thread groove, the toper inclined plane of fixing piece 3 with change fan 9 and whirl airflow channel and correspond the setting, whirl air current and along the fuel of 3 toper inclined plane removal of fixing piece can with the blade contact who changes fan 9, and then drive and change fan 9 and thread groove rotation, lead to screw rod 10 reciprocating motion in the thread groove, thereby provide the boosting power for the realization of follow-up function.
Referring to fig. 3, a limiting rod 11 is welded at one end of a screw 10 close to a fixing member 3, a limiting notch 12 is formed in the fixing member 3 at a position between a sliding cavity 8 and a rotating fan 9, the limiting notch 12 is communicated with the sliding cavity 8, the limiting notch 12 and the limiting rod 11 form a movable clamp connection, the other end of the limiting rod 11 can be in contact with a sliding block end of a sliding rod 7, when the screw 10 reciprocates, the limiting rod 11 can be driven to move synchronously, the sliding rod 7 is intermittently pushed by the limiting rod 11 to stretch out, and then the contact head 5 intermittently moves, and the moving direction is opposite to the moving direction of fuel, through the actions, the impact force between the contact head 5 and the fuel is intermittently increased, so that the axial impact force of the fuel is reduced, the fuel particles can be effectively wrapped by swirling air flow, and the probability of mixing the fuel and the air is increased.
The use method (working principle) of the invention is as follows:
when the rotary kiln is in operation, fuel and air enter the nozzle 2 from the air duct 1, further fuel and air are mixed in the nozzle 2, then the mixture enters the rotary kiln and is combusted in the rotary kiln, in the process, fuel and part of air are axially sprayed from the fuel passage and the axial flow air passage, and the rest of air is rotationally sprayed from the rotational flow air passage, when the fuel is axially sprayed, the fuel is firstly contacted with the wind receiving conical surface of the contact head 5, so that part of the fuel is close to rotational flow air along the conical inclined surface, meanwhile, the other fuel is sprayed from the straight side surface of the contact head 5 through the air passage 6, in addition, in the process that the fuel enters the air passage 6, the contact head 5 is pushed to rotate, so that the slide rod 7 rotates in the slide cavity 8, and then, the rotational flow air and the fuel are contacted with the rotary fan 9 along with the continuous conveying of the air and the fuel, so that the rotary fan 9 rotates with the thread groove, and then make the threaded spindle 10 drive the gag lever post 11 to stretch out, contract reciprocally, when the gag lever post 11 stretches out, it will promote the slide bar 7 to move axially, make the contact 5 stretch out axially synchronously, and produce the offset with the fuel, when the gag lever post 11 contracts, the fuel will drive contact 5 and slide bar 7 to reset, finally, the mixture of fuel and air will be sprayed to the rotary kiln through the shower nozzle 2, this is a duty cycle.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a rotary kiln is with multichannel mixed fuel combustor, includes wind channel (1), wind channel (1) cup joints the setting for multiple pipeline each other, the pipeline is fuel passageway, whirl air current passageway and axial compressor air current passageway by interior outside to respectively, the fixed position of wind channel (1) gas outlet installs shower nozzle (2), its characterized in that: fixing piece (3) are installed to the inner chamber of shower nozzle (2), fixed mounting has dead lever (4) between the lateral surface of fixing piece (3) and the inner wall of shower nozzle (2), be close to wind channel (1) in shower nozzle (2) inner chamber and install contact (5), the side of one side that is close to wind channel (1) on contact (5) is the windward conical surface, the windward conical surface sets up for the toper inclined plane, air current way (6) that are inclination setting are seted up to the inside of contact (5), straight side and the windward conical surface at contact (5) are seted up respectively to the both ends port of air current way (6), the straight side of contact (5) and the outside of fixing piece (3) are personally submitted smooth transition and are set up, contact (5) correspond the setting with fuel passageway.
2. The multi-channel mixed fuel burner of claim 1, wherein: the lateral surface of mounting (3) is the setting of toper inclined plane, the cross-sectional area on toper inclined plane is the crescent setting by wind channel (1) to the direction of shower nozzle (2).
3. The multi-channel mixed fuel burner of claim 1, wherein: the air flow channel (6) is arranged in a spiral shape at equal intervals, the spiral direction of the air flow channel (6) is the same as the rotating direction of rotational flow air flow, a sliding rod (7) is fixedly mounted on the side face, far away from the air channel (1), of the contact head (5), a sliding cavity (8) is formed in the fixing piece (3), and the sliding block end of the sliding rod (7) is movably connected with the sliding cavity (8).
4. The multi-channel mixed fuel burner for the rotary kiln as claimed in claim 3, wherein: the utility model discloses a fan, including mounting (3), shower nozzle (2), screw rod (10) for but screw rod (10) reciprocating motion, the toper inclined plane of mounting (3) with change fan (9) and correspond the setting with whirl air current passageway on being close to the side of shower nozzle (2) discharge gate on rotate and install and change fan (9), the central point of turning fan (9) puts and has seted up the thread groove, screw rod (10) are installed to the screw thread in the thread groove for screw rod (10).
5. The multi-channel mixed fuel burner for the rotary kiln as claimed in claim 4, wherein: the one end fixed mounting that screw rod (10) is close mounting (3) has gag lever post (11), mounting (3) inside is close to the position of rotating fan (9) and has seted up spacing notch (12), spacing notch (12) and gag lever post (11) form movable joint, spacing notch (12) can be passed to the other end of gag lever post (11) to with the slider end contact of slide bar (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562815.3A CN114992640B (en) | 2022-05-23 | 2022-05-23 | Multichannel mixed fuel combustor for rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562815.3A CN114992640B (en) | 2022-05-23 | 2022-05-23 | Multichannel mixed fuel combustor for rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN114992640A true CN114992640A (en) | 2022-09-02 |
| CN114992640B CN114992640B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210562815.3A Active CN114992640B (en) | 2022-05-23 | 2022-05-23 | Multichannel mixed fuel combustor for rotary kiln |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101633A (en) * | 1989-04-20 | 1992-04-07 | Asea Brown Boveri Limited | Burner arrangement including coaxial swirler with extended vane portions |
| JPH0711959A (en) * | 1993-06-22 | 1995-01-13 | Hino Motors Ltd | Combustion chamber device for diesel engine |
| CN2310306Y (en) * | 1997-07-30 | 1999-03-10 | 薛小民 | Hollow explosive-filling armour-piercing part |
| CN101813315A (en) * | 2009-02-20 | 2010-08-25 | 通用电气公司 | Coaxial type fuel-air mixer for gas turbine burner |
| CN204141575U (en) * | 2014-09-25 | 2015-02-04 | 武汉理工大学 | Be applicable to the coal burner nozzle being with minor air cell's cement decomposing furnace fuel-staged combustion |
| CN204550219U (en) * | 2015-04-07 | 2015-08-12 | 浙江理工大学 | A kind of efflux aerator of self-priming band spiral slot tapered shunting device |
| CN107023829A (en) * | 2017-05-22 | 2017-08-08 | 北京醇能科技有限公司 | A kind of fuel gas mixing arrangement |
| CN209622766U (en) * | 2019-01-16 | 2019-11-12 | 扬州市银焰机械有限公司 | A kind of coal burner |
| CN209926350U (en) * | 2019-04-23 | 2020-01-10 | 河南鑫筑机械有限公司 | Pulverized coal burner |
| CN111043626A (en) * | 2019-12-31 | 2020-04-21 | 新奥能源动力科技（上海）有限公司 | Nozzle, combustion chamber and gas turbine |
| CN215159133U (en) * | 2021-06-02 | 2021-12-14 | 上海曼大动力科技有限公司 | Anti-blocking pneumatic conveying biomass combustion power generation system |
-
2022
- 2022-05-23 CN CN202210562815.3A patent/CN114992640B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101633A (en) * | 1989-04-20 | 1992-04-07 | Asea Brown Boveri Limited | Burner arrangement including coaxial swirler with extended vane portions |
| JPH0711959A (en) * | 1993-06-22 | 1995-01-13 | Hino Motors Ltd | Combustion chamber device for diesel engine |
| CN2310306Y (en) * | 1997-07-30 | 1999-03-10 | 薛小民 | Hollow explosive-filling armour-piercing part |
| CN101813315A (en) * | 2009-02-20 | 2010-08-25 | 通用电气公司 | Coaxial type fuel-air mixer for gas turbine burner |
| CN204141575U (en) * | 2014-09-25 | 2015-02-04 | 武汉理工大学 | Be applicable to the coal burner nozzle being with minor air cell's cement decomposing furnace fuel-staged combustion |
| CN204550219U (en) * | 2015-04-07 | 2015-08-12 | 浙江理工大学 | A kind of efflux aerator of self-priming band spiral slot tapered shunting device |
| CN107023829A (en) * | 2017-05-22 | 2017-08-08 | 北京醇能科技有限公司 | A kind of fuel gas mixing arrangement |
| CN209622766U (en) * | 2019-01-16 | 2019-11-12 | 扬州市银焰机械有限公司 | A kind of coal burner |
| CN209926350U (en) * | 2019-04-23 | 2020-01-10 | 河南鑫筑机械有限公司 | Pulverized coal burner |
| CN111043626A (en) * | 2019-12-31 | 2020-04-21 | 新奥能源动力科技（上海）有限公司 | Nozzle, combustion chamber and gas turbine |
| CN215159133U (en) * | 2021-06-02 | 2021-12-14 | 上海曼大动力科技有限公司 | Anti-blocking pneumatic conveying biomass combustion power generation system |
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| CN114992640B (en) | 2023-05-12 |
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Effective date of registration: 20230420 Address after: 336400 No. 6, Jiamei Road, huangjindui Industrial Park, Shanggao County, Yichun City, Jiangxi Province Applicant after: Jiangxi Xiecheng Lithium Industry Co.,Ltd. Address before: No. 9, Yinyan Road, Industrial Park, Guangling District, Yangzhou City, Jiangsu Province, 225006 Applicant before: YANGZHOU YINYAN MACHINARY CO.,LTD. |
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