CN211146455U - Plasma low-nitrogen combustion device - Google Patents
Plasma low-nitrogen combustion device Download PDFInfo
- Publication number
- CN211146455U CN211146455U CN201921555340.5U CN201921555340U CN211146455U CN 211146455 U CN211146455 U CN 211146455U CN 201921555340 U CN201921555340 U CN 201921555340U CN 211146455 U CN211146455 U CN 211146455U
- Authority
- CN
- China
- Prior art keywords
- low
- plasma
- pipeline
- nitrogen combustion
- nitrogen
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a low nitrogen burner of plasma. The device comprises a gasification furnace, a low-nitrogen combustion device, a reactor and a plasma generator; the outlet of the gasification furnace is connected with the low-nitrogen combustion device through a first branch, and a second branch is connected with the plasma generator; the low-nitrogen combustion device is connected with the first inlet of the reactor through a second pipeline, the plasma generator is connected with the second inlet of the reactor through a third pipeline, and the plasma generator is connected with a plasma power supply; the reactor is also provided with an exhaust port; the low-nitrogen combustion device is provided with a combustion chamber and a shell, and a first air supply outlet is arranged in the shell and at the front end of the combustion chamber; housing and combustionThe cavity clearance is processing apparatus, and processing apparatus includes ignition cabinet, second air supply chamber and vapor condensation chamber. The plasma low-nitrogen combustion device has simple structure, and the plasma directly participates in the system reaction to reduce NOXDischarging of (3); ignition and combustion are accurate, and potential safety hazards are avoided; the air supply gas is uniformly mixed, the treatment efficiency is improved, and the energy conservation and environmental protection are realized.
Description
Technical Field
The utility model belongs to the technical field of the low-nitrogen combustion, concretely relates to low-nitrogen combustion device of plasma.
Background
At present, NOXThe technical measures for emissions can be divided into two main categories, the first category being in-furnace denitration and reduction of NO by controlling the combustion process by various technical meansXThe second type is tail denitration, which is to remove NO generated in tail flue gasXAnd (4) reducing. In the prior art, the low-nitrogen combustion technology and the flue gas denitration mode are mostly adopted to reduce NOXIn addition to the emission of (1), but the low-nitrogen combustion technology is different, NOXThe difference in emission concentration is also large.
The plasma low-nitrogen combustion technology is that the plasma is utilized to directly ignite the coal powder in the combustor, so that a large amount of oil for starting the boiler can be saved. The plasma pulverized coal burner adopting the technology is combined with the air integral low-nitrogen combustion technology while realizing pulverized coal internal combustion, and can greatly reduce NO of the boiler on the premise of not reducing the boiler efficiencyXThe temperature of the reaction zone generated by the existing plasma low-nitrogen combustion technology is up to 1500 ℃, and partial NO still remains in the low-nitrogen combustion deviceXThe waste gas is discharged out of the system, so that the relatively serious environmental pollution is caused, and the waste of energy sources is caused, and the environment friendliness is not facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in view of the above-mentioned defects, the utility model provides a plasma low-nitrogen combustion device, simple structure, plasma directly participate in the system reaction, reduce NOXDischarging of (3); ignition and combustion are accurate, and potential safety hazards are avoided; the air supply gas is uniformly mixed, the treatment efficiency is improved, and the energy conservation and environmental protection are realized.
The utility model provides a technical scheme that its technical problem adopted as follows: the plasma low-nitrogen combustion device comprises a gasification furnace, a low-nitrogen combustion device, a reactor and a plasma generator; a first pipeline is arranged at the outlet of the gasification furnace, a tee joint is arranged on the first pipeline, two ends of the tee joint are respectively connected with the low-nitrogen combustion device through a first branch, and a second branch is connected with the plasma generator; the low-nitrogen combustion device is connected with the first inlet of the reactor through a second pipeline, the plasma generator is connected with the second inlet of the reactor through a third pipeline, and the plasma generator is connected with a plasma power supply; the reactor is also provided with an exhaust port; wherein the content of the first and second substances,
the low-nitrogen combustion device is provided with a combustion chamber and a shell, and a first air supply outlet is arranged in the shell and at the front end of the combustion chamber; a gap between the shell and the combustion chamber is a treatment device, and the treatment device comprises an ignition cabinet, a second air supply cavity and a water vapor condensation cavity; an ignition port arranged on the ignition cabinet and an outlet of the first air supply port are arranged at the same position; the ignition cabinet, the second air supply cavity and the steam condensation cavity are sequentially arranged from left to right and are mutually isolated; a gas guide port for gas is arranged on the inner side of the combustion chamber and communicated with the second air supply cavity; the contact wall of the water vapor condensation cavity and the combustion chamber is also provided with a water vapor spraying port.
The ignition port and the outlet of the first air supply port are arranged at the same position, so that the accuracy of successful ignition can be improved; when oxygen in the second air supply cavity is introduced into the system through the air guide port, the oxygen enters from multiple points, and CO and H pumped into the system together with the gasification furnace are added2The contact area of the reactor improves the instantaneous efficiency, thereby improving the reaction rate; by arranging the water vapor condensation cavity, the generated gas after ignition and combustion contains a small amount of CO2、H2NO of O2The gas is cooled, side reactions in the oxidation-reduction reaction in the subsequent reactor caused by overhigh temperature are avoided, the energy is saved, the environment is protected, and NO is inhibitedXThe production has little pollution to the environment.
Furthermore, the cross section of the combustion chamber is circular, and the adoption of the combustion chamber with the circular cross section can reduce the occupied area of the low-nitrogen combustion device and improve the utilization rate of land.
Further, the air guide ports are a plurality of layers; every layer has the gas mouth that leads that sets up and faces the same, and the gas mouth that leads of adjacent layer is opposite, sets up the gas mouth that leads that the orientation is different, can increase the gaseous collision that gets into in the low-nitrogen combustion device combustion chamber with follow the gasifier in second air supply chamber when distributing gas, compensaties the distribution and the NO of coalXThe disadvantage of insufficient specificity, the overall increase of the reduction amount and the inhibition of coke NOXAnd (4) generating.
Furthermore, the included angle between the odd number layer air guide ports and the right side wall of the combustion chamber is 20-70 degrees; the included angle between the gas guide ports of the even layers and the right side wall of the combustion chamber is 110-160 degrees, the gas guide ports are provided with directional injection, the angle of gas injected by the gas guide ports can be adjusted according to the gas flow rate, the gas flow and the like in the production process, and the N-containing compound in the system is ensured to be fully combusted.
Furthermore, a regulating valve is arranged in the first air supply outlet pipeline; a first flow regulating valve and a second flow regulating valve are arranged on the first branch and the second branch; the second pipeline is provided with a third flow regulating valve, and the third pipeline is provided with a fourth flow regulating valve. The arrangement of the flow regulating valve can improve CO and H in the gasification furnace2The proportion of the fuel entering the low-nitrogen combustion device and the plasma generator ensures that NO NO exists in the subsequent reactionXThe optimal process conditions are determined, the energy is saved, the environment is protected, and the pollution is reduced.
The utility model has the advantages that: by adopting the scheme, the structure is simple, and the ignition port and the outlet of the first air supply port are arranged at the same position, so that the accuracy of successful ignition can be improved; when oxygen in the second air supply cavity is introduced into the system through the air guide port, the oxygen enters from multiple points, and CO and H pumped into the system together with the gasification furnace are added2The contact area of the reactor improves the instantaneous efficiency, thereby improving the reaction rate; by arranging the water vapor condensation cavity, the generated gas after ignition and combustion contains a small amount of CO2、H2NO of O2The gas is cooled, side reactions in the oxidation-reduction reaction in the subsequent reactor caused by overhigh temperature are avoided, the energy is saved, the environment is protected, and NO is inhibitedXThe production has little pollution to the environment; with differently-oriented gas-guiding openings for distributing gasThe collision of the gas in the second air supply cavity and the gas entering the combustion cavity of the low-nitrogen combustion device from the gasification furnace can be increased, and the distribution and NO of coal are compensatedXThe disadvantage of insufficient specificity, the overall increase of the reduction amount and the inhibition of coke NOXThe gas guide port can adjust the gas angle sprayed out by the gas guide port according to the gas flow velocity, the gas flow and the like in the production process, thereby further ensuring that the N-containing compound in the system is fully combusted to obtain the nontoxic and pollution-free N2And (4) discharging the system in a form.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the combustion chamber of the present invention;
FIG. 3 is a cross-sectional view of the combustion chamber of the present invention;
wherein: 1 is a gasification furnace, 11 is a first pipeline, 111 is a first branch, 112 is a second branch, 12 is a tee, 13 is a second pipeline, and 14 is a third pipeline;
2, a low-nitrogen combustion device, 20, a shell, 21, a first air supply outlet, 22, an ignition cabinet, 23, a second air supply cavity, 24, a water vapor condensation cavity, 25, an ignition outlet, 26, a gas guide port, 27, a combustion cavity, 28, a water vapor spraying port and 29, wherein the shell is a shell;
3 is a plasma generator, 31 is a plasma power supply;
4 is a reactor, 41 is a first inlet, 42 is a second inlet, and 43 is an exhaust port;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the plasma low-nitrogen combustion device comprises a gasification furnace 1, a low-nitrogen combustion device 2, a reactor 4 and a plasma generator 3; a first pipeline 11 is arranged at the outlet of the gasification furnace 1, a tee joint 12 is arranged on the first pipeline 11, two ends of the tee joint 12 are respectively connected with the low-nitrogen combustion device 2 through a first branch 111, and a second branch 112 is connected with the plasma generator 3; the low-nitrogen combustion device 2 is connected with a first inlet 41 of the reactor through a second pipeline 13, the plasma generator 3 is connected with a second inlet 42 of the reactor through a third pipeline 14, and the plasma generator 3 is connected with a plasma power supply 31; the reactor 4 is also provided with an exhaust port 43;
the low-nitrogen combustion device 2 comprises a combustion chamber 27 with a circular section and a shell 20, wherein a first air supply outlet 21 is arranged in the shell 20 and at the front end of the combustion chamber 27; a gap between the shell 20 and the combustion chamber 27 is a processing device, and the processing device comprises an ignition cabinet 22, a second air supply cavity 23 and a water vapor condensation cavity 24; an ignition port 25 arranged on the ignition cabinet 22 and the outlet of the first air supply port 21 are arranged at the same position; the ignition cabinet 22, the second air supply cavity 23 and the steam condensation cavity 24 are arranged from left to right in sequence and are mutually isolated; an air guide port 26 for air is arranged on the inner side of the combustion chamber 27, and the air guide port 26 is communicated with the second air supply cavity 23; the air guide ports 26 are in a plurality of layers, the air guide ports 26 arranged on each layer face the same direction, and the air guide ports 26 on adjacent layers face opposite directions, specifically: the included angle between the single layer of air guide ports 26 and the right side wall of the combustion chamber 27 is 30 degrees; the included angle between the air guide ports 26 of the even number of layers and the right side wall of the combustion chamber 27 is 150 degrees; the contact wall of the water vapor condensation cavity 24 and the combustion cavity 27 is also provided with a water vapor spraying port 28; wherein, a regulating valve 29 is arranged in the pipeline of the first air supply outlet 21; the first branch 111 and the second branch 112 are provided with a first flow regulating valve 51 and a second flow regulating valve 52; the second duct 13 is provided with a third flow rate adjustment valve 53, and the third duct 14 is provided with a fourth flow rate adjustment valve 54.
The working process of the plasma low-nitrogen combustion device is as follows:
the gasification furnace 1 is filled with CO and H2Reducing gases CO and H2A first branch 111 and a second branch 111 connected by a tee 12The branch 112 enters the low-nitrogen combustion device 2 and the plasma generator 3, and the plasma generator 3 enters CO and H of the plasma generator 3 under the action of the plasma power supply 312Ionization +,*H、*CO; CO and H entering the low-NOx burner 22Under the action of the ignition port 25, the air blown into the system from the first air blowing port 21 is combusted, after the primary combustion, the air in the second air blowing cavity 23 is blown into the combustion chamber 27 from the air guide port 26, and the secondary air blowing mode can be used for fully combusting the coal filled in the low-nitrogen combustion device 2 to generate CO2、H2NO of O2(ii) a Regulating the third flow regulating valve 53 and the fourth flow regulating valve 54 controls the NO entering the reactor 42And H +, 'H' and 'CO' in certain proportion to produce non-toxic and harmless N2And is discharged from the exhaust port.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The plasma low-nitrogen combustion device comprises a gasification furnace (1), a low-nitrogen combustion device (2), a reactor (4) and a plasma generator (3); the method is characterized in that: a first pipeline (11) is arranged at the outlet of the gasification furnace (1), a tee joint (12) is arranged on the first pipeline (11), two ends of the tee joint (12) are respectively connected with the low-nitrogen combustion device (2) through a first branch (111), and a second branch (112) is connected with the plasma generator (3); the low-nitrogen combustion device (2) is connected with a first inlet (41) of the reactor through a second pipeline (13), the plasma generator (3) is connected with a second inlet (42) of the reactor through a third pipeline (14), and the plasma generator (3) is connected with a plasma power supply (31); the reactor (4) is also provided with an exhaust port (43); wherein the content of the first and second substances,
the low-nitrogen combustion device (2) is provided with a combustion chamber (27) and a shell (20), and a first air supply outlet (21) is arranged in the shell (20) and at the front end of the combustion chamber (27); a gap between the shell (20) and the combustion chamber (27) is a treatment device, and the treatment device comprises an ignition cabinet (22), a second air supply cavity (23) and a water vapor condensation cavity (24); an ignition port (25) arranged on the ignition cabinet (22) and an outlet of the first air supply port (21) are arranged at the same position; the ignition cabinet (22), the second air supply cavity (23) and the steam condensation cavity (24) are arranged from left to right in sequence and are isolated from each other; an air guide port (26) for air is arranged on the inner side of the combustion chamber (27), and the air guide port (26) is communicated with the second air supply cavity (23); the wall of the water vapor condensation cavity (24) contacting with the combustion chamber (27) is also provided with a water vapor spraying port (28).
2. The plasma low-nitrogen combustion apparatus according to claim 1, wherein: the combustion chamber (27) is circular in cross-section.
3. The plasma low-nitrogen combustion apparatus according to claim 1, wherein: the air guide ports (26) are a plurality of layers; each layer has air guide openings (26) arranged in the same direction, and the air guide openings (26) of adjacent layers are oppositely arranged.
4. The plasma low-nitrogen combustion apparatus according to claim 3, wherein: the included angle between the odd layer air guide port (26) and the right side wall of the combustion chamber (27) is 20-70 degrees; the angle between the air guide ports (26) of the even number of layers and the right side wall of the combustion chamber (27) is 110-160 degrees.
5. The plasma low-nitrogen combustion apparatus according to claim 1, wherein: a regulating valve (29) is arranged in the pipeline of the first air supply outlet (21); a first flow regulating valve (51) and a second flow regulating valve (52) are arranged on the first branch (111) and the second branch (112); a third flow regulating valve (53) is arranged on the second pipeline (13), and a fourth flow regulating valve (54) is arranged on the third pipeline (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555340.5U CN211146455U (en) | 2019-09-18 | 2019-09-18 | Plasma low-nitrogen combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555340.5U CN211146455U (en) | 2019-09-18 | 2019-09-18 | Plasma low-nitrogen combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211146455U true CN211146455U (en) | 2020-07-31 |
Family
ID=71757992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921555340.5U Active CN211146455U (en) | 2019-09-18 | 2019-09-18 | Plasma low-nitrogen combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211146455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486714A (en) * | 2019-09-18 | 2019-11-22 | 江苏河海新能源股份有限公司 | Plasma low nitrogen combustion apparatus |
-
2019
- 2019-09-18 CN CN201921555340.5U patent/CN211146455U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486714A (en) * | 2019-09-18 | 2019-11-22 | 江苏河海新能源股份有限公司 | Plasma low nitrogen combustion apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105805729B (en) | Low nox combustion method and low nox combustion system | |
| CN204388042U (en) | Low nox combustion system | |
| CN112555828A (en) | Hearth and combustor cooling type surface cold flame premixing gas boiler | |
| CN206112904U (en) | Biomass boiler low -nitrogen combustion system | |
| CN109442398B (en) | Multipoint direct-injection bisection fast-mixing radial-injection low-nitrogen combustor | |
| CN104696949A (en) | Two-stage process denitrification method of coal fired boiler | |
| CN113154369A (en) | Pulverized coal and ammonia mixed fuel preheating and decomposing combustion system and method | |
| CN211146455U (en) | Plasma low-nitrogen combustion device | |
| CN110848667B (en) | Low-calorific-value nitrogen-containing gas combustion system and method | |
| CN109973994B (en) | Low-nitrogen burner | |
| CN109827168B (en) | Coal powder coupled combustion device and combustion method | |
| CN217329793U (en) | Burner and combustion system | |
| CN114278940A (en) | Burner and combustion system | |
| JP2585798B2 (en) | Low NOx combustion device | |
| CN209960476U (en) | Pulverized coal coupled combustion device | |
| KR101730545B1 (en) | Low NOx burner | |
| CN209977990U (en) | Low-nitrogen full-premixing steam boiler | |
| CN216744355U (en) | Burner and combustion system | |
| CN220852134U (en) | Low-nitrogen gas boiler using ammonia gas as co-combustion fuel | |
| CN220152729U (en) | Gradually-expanding injection burner | |
| CN105276605A (en) | Coal-fired boiler and combustion method thereof | |
| CN219414771U (en) | Plasma-assisted coal-fired boiler ammonia-doped combustion and NOx ultra-low emission system | |
| CN216953022U (en) | Pulverized coal combustion system with gas-doped combustion | |
| CN217423251U (en) | Coke oven gas low-nitrogen burner | |
| CN114923168B (en) | Self-stable combustion low-nitrogen oxide four-corner tangential boiler and combustion method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220707 Address after: 213022 No.5 Qinling Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Jiangsu Hehai New Energy Technology Development Co.,Ltd. Address before: 213022 No.5 Qinling Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: JIANGSU HEHAI NEW ENERGY Co.,Ltd. |