CN104121579A - Boiler provided with dual-register pulverized coal burner on top - Google Patents
Boiler provided with dual-register pulverized coal burner on top Download PDFInfo
- Publication number
- CN104121579A CN104121579A CN201410382443.1A CN201410382443A CN104121579A CN 104121579 A CN104121579 A CN 104121579A CN 201410382443 A CN201410382443 A CN 201410382443A CN 104121579 A CN104121579 A CN 104121579A
- Authority
- CN
- China
- Prior art keywords
- air
- boiler
- chamber
- coal burner
- wind coal
- 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.)
- Pending
Links
Landscapes
- Air Supply (AREA)
Abstract
The invention discloses a boiler provided with a dual-register pulverized coal burner on the top, belonging to the technical field of boilers, and aiming at providing a U-shaped flame boiler which is provided with the dual-register pulverized coal burner on the top and is high in combustion efficiency. According to the technical scheme, the boiler provided with the dual-register pulverized coal burner on the top comprises a boiler body and an ash falling pit, wherein the ash falling pit is formed in the bottom of the boiler body, a membrane type water-cooling wall is arranged on the inner wall of the boiler body, a first partitioning wall is arranged on the top in the boiler body and is used for partitioning the boiler body into a combustion chamber and a waste gas chamber, the lower parts of the combustion chamber and the waste gas chamber are communicated with each other to form a first pair of flue channels, the dual-register pulverized coal burner is arranged at the top of the combustion chamber, a second partitioning wall is arranged at the bottom of the waste gas chamber and is used for partitioning the waste gas chamber into a left chamber and a right chamber, the upper parts of the left chamber and the right chamber are communicated with each other, and a flue discharging channel is arranged at the bottom of the side wall of the right chamber. The boiler is high in heat utilization rate and less in waste gas emission.
Description
Technical field
The invention belongs to boiler technology field, be specifically related to a kind of by the U-shaped boiler of two tune wind coal burner top sets.
Background technology
Boiler industry is the consumption coal rich and influential family of China, and the energy-saving and emission-reduction of boiler industry have very important impact to the realization of national Energy Intensity Reduction target.The trend of boiler technology development is the increase of capacity and the raising of parameter, and wherein the development of combustion technology is an importance.Coal burner is the critical component of boiler combustion equipment, and its Main Function is to transfer the fuel and air in burner hearth, realizes and reasonably mixing and burning.Along with the pressure of current environmental pollution increases, the emission control of burner has become the important investigation index of burner performance.
Current coal burner is mainly divided into straight-through pulverized coal burner and the large class of vortex burner two, and vortex burner adopts the mode of front wall collocation or front and back wall cross collocation, and wall formula is arranged; Four jiaos of arrangements of the many employings of straight-through pulverized coal burner, burner arrangement, on four angles of burner hearth, forms tangential firing.
DC burner corner tangential firing causes furnace outlet gas temperature poor bigger than normal, and DC burner tangential firing requires burner hearth to approach square, and along with the increasing of capacity, the size of burner hearth strengthens thereupon.If ensure, a Secondary Air is good mixes and the rigidity of jet, and the blower fan that this just needs high pressure has restricted the large scale development of tangential firing boiler.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: provide a kind of two tune wind coal burners are placed in to boiler top, U-shaped flame boiler that efficiency of combustion is high.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
The boiler of two tune wind coal burner overheads, comprise body of heater and the ashcan that falls, described fall ashcan be arranged on the bottom of body of heater, the inwall of body of heater is provided with fin panel casing, top in described body of heater is provided with the first partition wall, body of heater is divided into combustion chamber and exhaust air chamber by described the first partition wall, the bottom of described combustion chamber and exhaust air chamber is connected, form first pair of cigarette channel, the top of described combustion chamber is provided with two wind coal burners of adjusting, described two discharging opening of adjusting wind coal burner is connected with the feeding mouth of combustion chamber, the bottom of described exhaust air chamber is provided with the second partition wall, exhaust air chamber is divided into left chamber and right ventricle by the second partition wall, the top of described left chamber and right ventricle is connected, form second pair of cigarette channel, the sidewall bottom of described right ventricle is provided with discharge flue.
Wherein, described two wind coal burner of adjusting comprises body, one end of described body is input, the other end is output, described inner second air road is along the central axial direction setting of output, described inner second air road is connected input and output, the outer ring in described inner second air road is from inside to outside disposed with outer second air road and an air channel, described outer second air road and an air channel are all connected input and output, described outer second air road and an air channel are circular passage, the inside in described inner second air road is provided with the first vane swirler, blade tilt in described the first vane swirler is 55 °-65 °, the inside in described outer second air road is provided with the second vane swirler, blade tilt in described the second vane swirler is 55 °-65 °.
Further, described discharge flue is arranged on the side away from left chamber.
Further, indoor economizer and the air preheater of being disposed with from top to bottom in a described left side.
Further, in described right ventricle, be disposed with from top to bottom economizer and air preheater.
Further, the tangent setting of air flow direction in the blade of described the first vane swirler and inner second air road.
Further, the tangent setting of air flow direction in the blade of described the second vane swirler and outer second air road.
Further, the blade tilt of described the first vane swirler is 55 °, or is 60 °, or is 65 °.
Further, the blade tilt of described the second vane swirler is 55 °, or is 60 °, or is 65 °.
The present invention compared with prior art has following beneficial effect.
One, the present invention is by two tune wind coal burner overheads, top in body of heater is fixedly installed the first partition wall, body of heater is divided into combustion chamber and exhaust air chamber by the first partition wall, the bottom of combustion chamber and exhaust air chamber communicates, form cigarette channel, it is U-shaped that flame is in combustion process, and, exhaust air chamber is divided into left chamber and right ventricle by the second partition wall, the top of left chamber and right ventricle is connected, form second pair of cigarette channel, when being moved in body of heater, flue gas becomes " S " type, when flue gas and flame move in body of heater, speed slows down, the heat energy of flue gas and flame and the heat exchange of fin panel casing are thorough, realize low energy consumption, low emission, realize the clean burning of coal, solve the problem that existing combustion of industrial boiler efficiency is low and Air Pollutants Emissions is large, and this structure to have solved the cost of front-back wall in arranging higher, the layout of burner is affected and the problem such as pipe deforming is inhomogeneous by coal pulverizer number of units.
Two, two tune wind coal burners are fought and are surely fired by high-temperature flue gas point in the recirculating zone of single burner outlet, and it is flexible that the Secondary Air of vortex burner is sent into mode, due to overfiren air port and primary air nozzle relatively independent, arrange freely each other, can have multiple arrangement.In the time using bituminous coal that volatile matter is high or brown coal, can adopt the arrangement of impartial air distribution, make Secondary Air to supply with combustion chamber in time, fully, be conducive to making full use of of fuel, in addition, in the time using meager coal that volatile matter is low and anthracite, can adopt the mode of a wind centralized arrangement, a wind centralized arrangement, makes the burning of breeze airflow relatively concentrated, can improve local heat load and the temperature of combustion zone, improve ignition condition.
Three, in left chamber of the present invention and right ventricle, be provided with economizer and air preheater, so just form multiple economizer and air preheater system, utilized the slow feature of flue gas flow rate in the present invention, the preheating in flue gas fully can have been absorbed, improve the utilization rate of fuel, saved resource.
Four, the two wind coal burners of adjusting in the present invention can regulate tangential flow guiding sheet inclination angle as required, form the recirculating zone of different sizes, change swirl strength, can adapt to the coal dust of multiple coal.
Five, two tune wind coal burners adopt staged air distribution mode, can make wind powder mix slowly, the adjusting of being convenient to burn, burning flexible adjustment.
Six, two tune wind coal burners can be realized efficient, the smooth combustion of more extensive coal coal dust, after-flame degree is high, and according to the characteristic of turbulent burner, by tangential swirl device regulative mode flexibly, the situation that can effectively prevent the coking of water-cooled tube wall, high temperature corrosion, overtemperature tube burst occurs, and has good burning performance.
Seven, the inner second air road of two tune wind coal burners and the ventilation in outer second air road order have successively, adopt the mode of reamer to arrange air channel, and jet rigidity is strong, far firing range, and firepower is concentrated, and makes coal dust firing abundant, has improved coal dust after-flame degree.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is two structural representation Fig. 1 that adjust wind coal burner in Fig. 1.
Fig. 3 is two structural representation Fig. 2 that adjust wind coal burner in Fig. 1.
In figure: 1 is body of heater, 2 is two wind coal burners of adjusting, and 11 is combustion chamber, 12 is exhaust air chamber, and 13 is the ashcan that falls, and 14 is the first partition wall, 15 is fin panel casing, and 21 is body, and 112 is first pair of cigarette channel, 121 is discharge flue, 122 is air preheater, and 123 is economizer, and 124 is the second partition wall, 125 is second pair of cigarette channel, 126 is left chamber, and 127 is right ventricle, and 211 is an air channel, 212 is outer second air road, 213 is inner second air road, and 214 is the first vane swirler, and 215 is the second vane swirler, 216 is input, and 217 is output.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation, and accompanying drawing is the schematic diagram of simplifying, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
The boiler of two tune wind coal burner overheads, comprise body of heater 1 and the ashcan 13 that falls, described fall ashcan 13 be arranged on the bottom of body of heater 1, the inwall of body of heater 1 is provided with fin panel casing 15, top in described body of heater 1 is provided with the first partition wall 14, body of heater 1 is divided into combustion chamber 11 and exhaust air chamber 12 by described the first partition wall 14, the bottom of described combustion chamber 11 and exhaust air chamber 12 is connected, form first pair of cigarette channel 112, the top of described combustion chamber 11 is provided with two wind coal burners 2 of adjusting, described two discharging opening of adjusting wind coal burner 2 is connected with the feeding mouth of combustion chamber 11, the bottom of described exhaust air chamber 12 is provided with the second partition wall 124, exhaust air chamber 12 is divided into left chamber 126 and right ventricle 127 by the second partition wall 124, the top of described left chamber 126 and right ventricle 127 is connected, form second pair of cigarette channel 125, the sidewall bottom of described right ventricle 127 is provided with discharge flue 121.
Wherein, described two wind coal burner 2 of adjusting comprises body 21, one end of described body 21 is input 216, the other end is output 217, described inner second air road 213 is along the central axial direction setting of output 217, described inner second air road 213 is connected input 216 and output 217, the outer ring in described inner second air road 213 is from inside to outside disposed with outer second air road 212 and an air channel 211, described outer second air road 212 and an air channel 211 are all connected input 216 and output 217, described outer second air road 212 and an air channel 211 are circular passage, the inside in described inner second air road 213 is provided with the first vane swirler 214, blade tilt in described the first vane swirler 214 is 55 °-65 °, the inside in described outer second air road 212 is provided with the second vane swirler 215, blade tilt in described the second vane swirler 215 is 55 °-65 °.
As preferably, described discharge flue 121 is arranged on the side away from left chamber 126.
As preferably, in described left chamber 126, be disposed with from top to bottom economizer 123 and air preheater 122.
As preferably, in described right ventricle 127, be disposed with from top to bottom economizer 123 and air preheater 122.
As preferably, the tangent setting of air flow direction in the blade of described the first vane swirler 214 and inner second air road 213.
As preferably, the tangent setting of air flow direction in the blade of described the second vane swirler 215 and outer second air road 212.
As preferably, the blade tilt of described the first vane swirler 214 is 55 °, or is 60 °, or is 65 °.
As preferably, the blade tilt of described the second vane swirler 215 is 55 °, or is 60 °, or is 65 °.
The present invention is placed in two tune wind coal burners 2 at the top of U-shaped boiler, after air and fuel spray into from top to down, in the interior burning in combustion chamber 11, flame and flue gas be motion from top to bottom in combustion chamber 11, the high-temperature flue gas of 11 inside, combustion chamber and flame and fin panel casing 15 complete after heat exchange, enter first pair of cigarette channel 112, turnover and on wash away successively air preheater 122 and the economizer 123 in left chamber 126, then flue gas enters second pair of cigarette channel 125, to the flowing velocity of the further reducing smoke of cigarette channel, flue gas enters behind right ventricle 127, turnover and under wash away successively economizer 123 and air preheater 122, after economizer 123 and air preheater 122 further absorb the heat in waste gas, waste gas is finally discharged by the discharge flue 121 that is arranged on 127 bottoms, right ventricle, in this process, the flow trace of flame and flue gas is U-shaped, lime-ash sedimentation in motion process that coal dust firing produces, enter ashcan 13.
The invention provides a kind of two wind combustor of adjusting, comprise air channel 211, inner second air road 213 and outer second air road 212 one time, a wind direct current is by an air channel 211, enter burner hearth from outside pulverized coal conveying, secondary air separating is inner second air and outer second air, inner second air and outer second air all produce rotation after being arranged on the tangential vane cyclone in air channel, after formation eddy flow, send into burner hearth.Quantity and the size of the tangential vane cyclone in inner second air road 213 and outer second air road 212 are all determined according to the size of burner, the blade tilt of tangential vane cyclone is generally made as 55 °-65 °, the ratio in inner second air road 213 is 4:6-2:8, inner second air road 213 and outer two subchannels adopt reamer mode to arrange, inner second air and outer second air are successively sent into burner hearth, form staged air distribution mode, coal dust and air are mixed and become slowly, the adjusting of being convenient to burn.
Claims (8)
1. the boiler of pair tune wind coal burner overhead, comprise body of heater (1) and the ashcan that falls (13), described fall ashcan (13) be arranged on the bottom of body of heater (1), the inwall of body of heater (1) is provided with fin panel casing (15), it is characterized in that, top in described body of heater (1) is provided with the first partition wall (14), body of heater (1) is divided into combustion chamber (11) and exhaust air chamber (12) by described the first partition wall (14), the bottom of described combustion chamber (11) and exhaust air chamber (12) is connected, form first pair of cigarette channel (112), the top of described combustion chamber (11) is provided with two wind coal burners (2) of adjusting, described two discharging opening of adjusting wind coal burner (2) is connected with the feeding mouth of combustion chamber (11), the bottom of described exhaust air chamber (12) is provided with the second partition wall (124), exhaust air chamber (12) is divided into left chamber (126) and right ventricle (127) by the second partition wall (124), the top of described left chamber (126) and right ventricle (127) is connected, form second pair of cigarette channel (125), the sidewall bottom of described right ventricle (127) is provided with discharge flue (121),
Described two wind coal burner (2) of adjusting comprises body (21), one end of described body (21) is input (216), the other end is output (217), described inner second air road (213) is along the central axial direction setting of output (217), described inner second air road (213) is connected input (216) and output (217), the outer ring in described inner second air road (213) is from inside to outside disposed with outer second air road (212) and an air channel (211), described outer second air road (212) and an air channel (211) are all connected input (216) and output (217), described outer second air road (212) and an air channel (211) are circular passage, the inside in described inner second air road (213) is provided with the first vane swirler (214), blade tilt in described the first vane swirler (214) is 55 °-65 °, the inside in described outer second air road (212) is provided with the second vane swirler (215), blade tilt in described the second vane swirler (215) is 55 °-65 °.
2. two boiler of adjusting wind coal burner overhead according to claim 1, is characterized in that, described discharge flue (121) is arranged on the side away from left chamber (126).
3. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that, is disposed with from top to bottom economizer (123) and air preheater (122) in described left chamber (126).
4. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that, is disposed with from top to bottom economizer (123) and air preheater (122) in described right ventricle (127).
5. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that the tangent setting of air flow direction in the blade of described the first vane swirler (214) and inner second air road (213).
6. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that the tangent setting of air flow direction in the blade of described the second vane swirler (215) and outer second air road (212).
7. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that, the blade tilt of described the first vane swirler (214) is 55 °, or is 60 °, or is 65 °.
8. two boiler of adjusting wind coal burner overhead according to claim 1 and 2, is characterized in that, the blade tilt of described the second vane swirler (215) is 55 °, or is 60 °, or is 65 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382443.1A CN104121579A (en) | 2014-08-06 | 2014-08-06 | Boiler provided with dual-register pulverized coal burner on top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382443.1A CN104121579A (en) | 2014-08-06 | 2014-08-06 | Boiler provided with dual-register pulverized coal burner on top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104121579A true CN104121579A (en) | 2014-10-29 |
Family
ID=51767106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382443.1A Pending CN104121579A (en) | 2014-08-06 | 2014-08-06 | Boiler provided with dual-register pulverized coal burner on top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104121579A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042556A (en) * | 2015-05-27 | 2015-11-11 | 西安交通大学 | Burner-overhead vertical U-structured oil and gas boiler |
| CN107559821A (en) * | 2017-09-21 | 2018-01-09 | 哈尔滨工业大学 | The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead |
| CN111939668A (en) * | 2020-07-29 | 2020-11-17 | 浙江友谊新材料有限公司 | Smoke filtering mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040237862A1 (en) * | 2001-10-05 | 2004-12-02 | Yoshitaka Oomura | Ash melting type u-firing combustion boiler and method of operating the boiler |
| CN102425775A (en) * | 2011-12-06 | 2012-04-25 | 山西蓝天环保设备有限公司 | U-shaped flame vertical pulverized coal combustion oil field gas injection boiler with overhead burner |
| CN202303348U (en) * | 2011-08-23 | 2012-07-04 | 瑞焓能源科技有限公司 | Vertical powder burning industrial boiler with top combustor spraying downwards |
| CN203731402U (en) * | 2013-12-13 | 2014-07-23 | 山西蓝天环保设备有限公司 | A dual-air-regulating pulverized coal burner for an industrial pulverized coal boiler |
| CN203731392U (en) * | 2013-12-13 | 2014-07-23 | 山西蓝天环保设备有限公司 | U-shaped flame boiler with overhead straight-through pulverized coal burner |
| CN204176635U (en) * | 2014-08-06 | 2015-02-25 | 北京大邦实创节能技术服务有限公司 | The boiler of two tune wind coal burner overhead |
-
2014
- 2014-08-06 CN CN201410382443.1A patent/CN104121579A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040237862A1 (en) * | 2001-10-05 | 2004-12-02 | Yoshitaka Oomura | Ash melting type u-firing combustion boiler and method of operating the boiler |
| CN202303348U (en) * | 2011-08-23 | 2012-07-04 | 瑞焓能源科技有限公司 | Vertical powder burning industrial boiler with top combustor spraying downwards |
| CN102425775A (en) * | 2011-12-06 | 2012-04-25 | 山西蓝天环保设备有限公司 | U-shaped flame vertical pulverized coal combustion oil field gas injection boiler with overhead burner |
| CN203731402U (en) * | 2013-12-13 | 2014-07-23 | 山西蓝天环保设备有限公司 | A dual-air-regulating pulverized coal burner for an industrial pulverized coal boiler |
| CN203731392U (en) * | 2013-12-13 | 2014-07-23 | 山西蓝天环保设备有限公司 | U-shaped flame boiler with overhead straight-through pulverized coal burner |
| CN204176635U (en) * | 2014-08-06 | 2015-02-25 | 北京大邦实创节能技术服务有限公司 | The boiler of two tune wind coal burner overhead |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042556A (en) * | 2015-05-27 | 2015-11-11 | 西安交通大学 | Burner-overhead vertical U-structured oil and gas boiler |
| CN107559821A (en) * | 2017-09-21 | 2018-01-09 | 哈尔滨工业大学 | The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead |
| CN107559821B (en) * | 2017-09-21 | 2019-11-15 | 哈尔滨工业大学 | The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead |
| CN111939668A (en) * | 2020-07-29 | 2020-11-17 | 浙江友谊新材料有限公司 | Smoke filtering mechanism |
| CN111939668B (en) * | 2020-07-29 | 2021-09-21 | 浙江友谊新材料有限公司 | Smoke filtering mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201680364U (en) | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers | |
| CN101725969B (en) | Low-NOx pulverized coal burner | |
| CN103759258A (en) | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor | |
| CN106168376B (en) | A kind of twin furnace coal dust gasification low nitrogen burning Industrial Boiler | |
| CN203731392U (en) | U-shaped flame boiler with overhead straight-through pulverized coal burner | |
| CN104180368A (en) | Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof | |
| CN201475997U (en) | Coal dust burner with self-stabilizing capability, three-stage air-distribution and low NOx content | |
| CN202884901U (en) | Boiler capable of realizing reignition of exhaust gas coal powder by using high-temperature flue gas and reducing NOx | |
| CN105114951A (en) | Tail edge backflow dual-classification low-nitrogen-oxygen gas burner | |
| CN202002096U (en) | Water-coal-slurry low-nitrogen swirl burner | |
| CN201339949Y (en) | Biomass boiler | |
| CN111780106B (en) | Flameless burner of steel rolling heating furnace and application thereof | |
| CN206739256U (en) | A kind of single backhaul WNS structure boilers | |
| CN203731379U (en) | Reciprocal double-cyclone type biomass particle forming fuel grate-fired furnace | |
| CN202253604U (en) | Tertiary air low-nitrogen combustion arrangement structure | |
| CN104154533A (en) | Reverse flow pre-mixing type pulverized coal low-nitrogen combustor and combustion method thereof | |
| CN206037029U (en) | Low NOx burner is put at end suitable for load adjustment by a wide margin | |
| CN104121579A (en) | Boiler provided with dual-register pulverized coal burner on top | |
| CN201606876U (en) | Low-NOx coal burner | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN208901372U (en) | A kind of pulverized-coal fired boiler low NOx combustion system | |
| CN101761921B (en) | Industrial coal dust burning boiler system | |
| CN103836620B (en) | Oxygen-enriched micro-oil staged combustion device | |
| CN204176635U (en) | The boiler of two tune wind coal burner overhead | |
| CN109737391A (en) | A kind of circulating fluidized bed boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141029 |
|
| RJ01 | Rejection of invention patent application after publication |