CN110566944A - aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof - Google Patents
aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof Download PDFInfo
- Publication number
- CN110566944A CN110566944A CN201910846503.3A CN201910846503A CN110566944A CN 110566944 A CN110566944 A CN 110566944A CN 201910846503 A CN201910846503 A CN 201910846503A CN 110566944 A CN110566944 A CN 110566944A
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- tooth
- coal burner
- stable combustion
- aggregate drying
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 85
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 76
- 238000001035 drying Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000013598 vector Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002864 coal component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2208/00—Control devices associated with burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2209/00—Safety arrangements
- F23D2209/20—Flame lift-off / stability
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
the invention relates to an aggregate drying pulverized coal burner with a tooth-shaped stable combustion device and a control method thereof. The tooth-shaped stable combustion device is arranged at the primary air nozzle of the aggregate drying pulverized coal burner, so that flame is well controlled, the stable combustion device realizes thick-thin separation, the ignition and stable combustion capacity of pulverized coal can be improved, and NO (nitric oxide) can be effectively reducedXAnd (4) generating.
Description
Technical Field
The application relates to a aggregate drying pulverized coal burner and a control method thereof.
Background
The aggregate required in road construction engineering is mostly dried by adopting a pulverized coal burner at present. However, the quality of coal is uneven, the poor quality coal can cause slag bonding and corrosion of a combustor, the unreasonable and incomplete combustion of pulverized coal can also cause a large amount of emission of nitrogen oxides, and the pressure of environmental pollution is further increased, so that the reduction of pollutant emission and the increase of the combustion utilization rate of the pulverized coal are problems to be urgently solved in the field at the present stage.
The pulverized coal burner is used as a heat supply device for drying aggregate, and the flame length can be changed within a certain range under the limitation of device conditions, fuel properties and working condition parameters. In engineering, different flame characteristics need to be selected according to different situation requirements. To reach the temperature required for aggregate moisture removal, the burner flame must be maintained at a certain length, position and temperature. The length of the flame is too short, the temperature is too concentrated, the materials are heated unevenly, the drying quality of the aggregate is reduced, the local high temperature causes the circumferential divergence of the flame, the width of the flame is increased, the abrasion burner heat-resistant materials and carbon deposition coking are easily burnt, the service life of the equipment is shortened, the maintenance cost of the equipment is increased, and the combustion efficiency of the pulverized coal and the discharge amount of pollutants are directly influenced. The ideal flame shape should be complete, lively, evenly distributed, moderate in flame length, and compatible with the combustor size. However, in practice, the shape of the flame is difficult to control.
"high efficiency low emission", i.e. burners with higher combustion efficiency and lower NOX、SOXThe discharge amount of pollutants and the like is a pursued target in the field of aggregate drying pulverized coal burners. The mechanism of NOx and SOX formation is known as NOx and SOXN, S, the higher the oxygen content, the more easily the oxidation reaction occurs, the more the amount of oxide formed, and the temperature affects NOx and SOXThe higher the temperature is, the more easily N and S in the coal components are pyrolyzed and separated out.
Disclosure of Invention
The invention aims to provide an aggregate drying pulverized coal burner with a tooth-shaped stable combustion device.
The utility model provides an aggregate stoving pulverized coal burner with tooth-shaped surely fires device which characterized in that: a tooth-shaped stable combustion ring is additionally arranged at a primary air outlet of the aggregate drying pulverized coal burner, and the number of teeth of the tooth-shaped stable combustion ring is 6-30.
Furthermore, the primary air tuyere of the aggregate drying pulverized coal burner has the air speed of 30-40 m/s, the primary air pulverized coal concentration of 0.500-0.700 Kg/s and the primary air preheating temperature of 290-345K.
Further, the air speed of a secondary air port of the aggregate drying pulverized coal burner is 40-60 m/s, the installation angle of a secondary air swirling flow blade is 40-60 degrees, and the air speed of tertiary air is 40-60 m/s.
Further, a combustor flaring is arranged between a secondary air port and a tertiary air port of the aggregate drying pulverized coal combustor, the semi-opening angle alpha of the combustor flaring is 35 degrees, and the length of the flaring section is equal to the diameter of the primary air outlet.
furthermore, the tooth-shaped combustion stabilizing ring has 24 teeth.
Furthermore, the wind speed of the primary wind port is 40m/s, the concentration of the primary wind pulverized coal is 0.650-0.700 Kg/s, the preheating temperature of the primary wind is 343K, the wind speed of the secondary wind port is 60m/s, the installation angle of a secondary wind cyclone blade is 60 degrees, and the wind speed of the tertiary wind port is 60 m/s.
furthermore, the tooth-shaped combustion stabilizing ring is made of high-temperature ceramic.
The invention also provides a control method of the aggregate drying pulverized coal burner with the tooth-shaped stable combustion device, which is characterized by comprising the following steps of:
(1) A tooth-shaped stable combustion ring is additionally arranged at a primary air outlet of the aggregate drying pulverized coal burner, and the number of teeth of the tooth-shaped stable combustion ring is 6-30;
(2) The primary air outlet wind speed of the aggregate drying pulverized coal burner is controlled to be 30-40 m/s, the primary air pulverized coal concentration is 0.500-0.700 Kg/s, the primary air preheating temperature is 290-345K, the secondary air outlet wind speed is 40-60 m/s, the secondary air swirl blade installation angle is 40-60 degrees, and the tertiary air wind speed is 40-60 m/s.
Further, a combustor flaring is arranged between a secondary air port and a tertiary air port of the aggregate drying pulverized coal combustor, the semi-opening angle alpha of the combustor flaring is 35 degrees, and the length of the flaring section is equal to the diameter of a primary air outlet.
Furthermore, the tooth number of the tooth-shaped combustion stabilizing ring in the step (1) is 24.
Furthermore, the wind speed of the primary wind port is 40m/s, the concentration of the primary wind pulverized coal is 0.650-0.700 Kg/s, the preheating temperature of the primary wind is 343K, the wind speed of the secondary wind port is 60m/s, the installation angle of a secondary wind cyclone blade is 60 degrees, and the wind speed of the tertiary wind port is 60 m/s.
The invention has the following beneficial technical effects:
The primary air flow passes through the tooth-shaped stable combustion device, small coal dust standing vortex is formed behind the teeth and attached to the root of the high-temperature backflow area, the concentration of coal dust in the standing vortex is high, the ignition temperature of the coal dust is reduced, and ignition and stable combustion are facilitated. When the powder jet flows through the annular combustion stabilizing teeth, a stable and strong high-temperature smoke backflow area can be formed, the heat and mass exchange between the backflow high-temperature smoke and the pulverized coal airflow is increased, the backflow of the high-temperature smoke provides a stable heat source for the pulverized coal, and the combustion stability is ensured.
The dentate blockage also influences the structural distribution of the flow field in the combustion chamber, and the backflow area behind the teeth enhances the turbulent flow mixing of the pulverized coal and the high-temperature flue gas, thereby improving the stable combustion capability.
After the pulverized coal jet flows through the tooth-shaped combustion stabilizing device, the jet flow track can deviate towards the center of a combustion chamber, namely the center of flame, the pulverized coal jet flows to the center, the pulverized coal concentration at the center of the flame is high, the pulverized coal concentration at the outer side of the flame is low, the combustion stabilizing device also realizes a certain 'thick-thin separation' effect, and the stability of pulverized coal combustion is improved.
The tooth-shaped combustion stabilizing device has more uniform blocking of pulverized coal jet flow along the circumferential direction, no obvious pulverized coal accumulation dead angle (local high-concentration pulverized coal area) behind the tooth, and can reduce the abrasion of the pulverized coal jet flow to the combustion stabilizing device and the accumulation coking of the pulverized coal.
The high-concentration coal powder in the center of the flame is not only beneficial to the stable combustion of the flame, but also enables the flame to be in a rich fuel combustion state, at the moment, the excess air coefficient is low, and nitrogen in the coal is oxidized to generate NOXThe amount of the pollutants is reduced, and the discharge amount of the pollutants is reduced. The coal powder concentration outside the flame is low, which belongs to the oxygen-enriched combustion state, although the increase of the oxygen content is not beneficial to inhibiting NOXBut is just at the position where the secondary air is introduced, and the secondary air brings a large amount of low-temperature airthe combustion temperature is reduced, and the thermal NO is inhibitedXAnd (4) generating.
The pulverized coal jet flow passes through the stable combustion ring, so that the component concentration and the state of a flow field are changed, and the combustion efficiency of the aggregate drying pulverized coal burner is influenced. Meanwhile, control parameters are changed, so that the concentration of the pulverized coal is increased, the length of flame is increased, and the combustion efficiency of the pulverized coal is reduced. The annular tooth-shaped stable combustion device causes flue gas backflow, so that the primary air temperature is improved, the proper air quantity and air speed are ensured, and the ignition point is reduced. Thereby ensuring the flame stability of the aggregate drying pulverized coal burner.
The aggregate drying pulverized coal burner and the control method thereof improve the traditional aggregate drying pulverized coal burner, simultaneously are assisted by optimized control parameters, can simply and effectively control the shape of combustion flame, further ensure that the heating effect meets the drying requirement, simultaneously improve the combustion efficiency to the maximum extent, and reduce NOX、SOXAnd (4) discharging the pollutants.
Drawings
FIG. 1 is a schematic view of a tooth-shaped combustion stabilizing ring structure;
FIG. 2 is a schematic view of an assembly structure of a tooth-shaped combustion stabilizing ring and a primary tuyere;
FIG. 3 is a schematic view of an assembly structure of the pulverized coal burner and the drying drum;
FIG. 4 is a schematic view of a combustor flare position;
FIG. 5 is a burner flow field velocity vector diagram of a toothless combustion stabilizing device;
FIG. 6 is a burner flow field velocity vector diagram of a 24-tooth-shaped combustion stabilizing device;
FIG. 7 is a burner flow field velocity vector diagram of an 8-tooth-shaped combustion stabilizing device;
Detailed Description
in the drawings: the device comprises a primary air port 1, a secondary air port 2, a tertiary air port 3, a tooth-shaped combustion stabilizing ring 4, a combustor flaring 5, a combustion chamber 6, a rear-end taper angle 7 and a drying roller 8.
the following detailed description of the embodiments of the invention is provided in conjunction with the accompanying drawings:
In the LB2000 asphalt mixing plant shown in fig. 3, the main body of the pulverized coal burner has a length of 1.5m, a diameter of 1.2m, and a half flare angle α of 35 °. Each secondary air port adopts a circular pipe orifice, a 24-tooth-shaped combustion stabilizing device shown in figure 1 is circumferentially arranged at the primary air nozzle, and the assembly mode is shown in figure 2; 12 axial type cyclones are uniformly arranged in the secondary air duct and the tertiary air duct respectively, and specific parameters are shown in table 1.
In the process of operating the pulverized coal burner, the primary air preheating temperature 343K, the primary air pulverized coal concentration 0.674Kg/s, the primary air speed 40m/s, the secondary air cyclone blade installation angle 60 degrees, the secondary air speed 60m/s and the tertiary air speed 60m/s are controlled.
Taking hollyriver lignite as an example, the corresponding data of coal quality analysis are as follows: lower calorific value Qnet,arIs 25.3 MJ.kg-1(ii) a Elemental analysis wC,ar80.36%, wH,ar5.08%, wO,ar12.17%, wN,ar9.94%, wS,arIs 1%; industrial analysis Ad8.28% of Vd55.02% of FC,d36.7 percent; the dry base ash content of the coal species is about 8%.
And analyzing the structure of the flow field inside the velocity vector diagram by a method of performing simulation analysis on the thermal state flow field. As can be seen from fig. 5-6, when the powder jet flows through the tooth-shaped combustion stabilizing device, a stable and strong high-temperature flue gas reflux area can be formed, so that the heat and mass exchange between the refluxed high-temperature flue gas and the pulverized coal airflow is increased, the reflux of the high-temperature flue gas provides a stable heat source for the pulverized coal, and the combustion stability is ensured. Compared with the 8-tooth combustion stabilizing device shown in fig. 7, in the flow field of the 24-tooth combustion stabilizing device, the distribution of the velocity vectors at the center of the axis is denser, which indicates that the pulverized coal jet is concentrated to the center and the concentration of the pulverized coal at the center of the axis is high. The position of the secondary backflow zone at the cone angle at the rear end of the combustion chamber is closer to the rear position of the secondary backflow zone with 24 teeth, so that complete combustion of unburned coal powder in the burnout zone is facilitated, and the combustion efficiency is improved. The flame length is kept at 4.45-4.90m, the flame diameter is kept at 0.85-0.98m, the combustion efficiency is 39.96-40.10%, the NO emission is kept at 250-275g, and SO is kept at2the discharge amount is maintained at 210-230 g.
TABLE 1 main constructional parameters of the pulverized coal burner and the drying drum
The inventor shows through a large number of experiments that the primary air speed, the primary air pulverized coal concentration and the primary air preheating temperature have the greatest influence on the flame shape, the combustion efficiency and the pollutant discharge amount; the secondary air and tertiary air velocity do not greatly affect the flame length, but have significant effects on combustion efficiency and pollutant emissions.
The foregoing is merely an illustrative embodiment of the present application, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present application shall fall within the protection scope of the present application.
Claims (10)
1. The utility model provides an aggregate stoving pulverized coal burner with tooth-shaped surely fires device which characterized in that: a tooth-shaped stable combustion ring is additionally arranged at a primary air outlet of the aggregate drying pulverized coal burner, and the number of teeth of the tooth-shaped stable combustion ring is 6-30.
2. The aggregate drying pulverized coal burner with the tooth-shaped stable combustion device as claimed in claim 1, characterized in that: the primary air inlet air speed of the aggregate drying pulverized coal burner is 30-40 m/s, the primary air pulverized coal concentration is 0.500-0.700 Kg/s, and the primary air preheating temperature is 290-345K.
3. An aggregate drying pulverized coal burner with a tooth-shaped stable combustion device as claimed in claim 1 or 2, characterized in that: the secondary air inlet air speed of the aggregate drying pulverized coal burner is 40-60 m/s, the secondary air swirl blade installation angle is 40-60 degrees, and the tertiary air speed is 40-60 m/s.
4. An aggregate drying pulverized coal burner with a tooth-shaped stable combustion device as claimed in claim 3, characterized in that: and a combustor flaring is arranged between the secondary air port and the tertiary air port of the aggregate drying pulverized coal combustor, the half-opening angle alpha of the combustor flaring is 35 degrees, and the length of the flaring section is equal to the diameter of the primary air outlet.
5. The aggregate drying pulverized coal burner with the tooth-shaped stable combustion device as claimed in claim 4, characterized in that: the tooth number of the tooth-shaped combustion stabilizing ring is 24, and the tooth-shaped combustion stabilizing ring is made of high-temperature ceramic.
6. An aggregate drying pulverized coal burner with a tooth-shaped stable combustion device as claimed in any one of claims 1 to 5, characterized in that: the wind speed of the primary air port is 40m/s, the concentration of primary air pulverized coal is 0.650-0.700 Kg/s, the preheating temperature of primary air is 343K, the wind speed of the secondary air port is 60m/s, the installation angle of a secondary air cyclone blade is 60 degrees, and the wind speed of the tertiary air port is 60 m/s.
7. A control method of an aggregate drying pulverized coal burner with a tooth-shaped stable combustion device is characterized by comprising the following steps:
(1) A tooth-shaped stable combustion ring is additionally arranged at a primary air outlet of the aggregate drying pulverized coal burner, and the number of teeth of the tooth-shaped stable combustion ring is 6-30;
(2) The primary air outlet wind speed of the aggregate drying pulverized coal burner is controlled to be 30-40 m/s, the primary air pulverized coal concentration is 0.500-0.700 Kg/s, the primary air preheating temperature is 290-345K, the secondary air outlet wind speed is 40-60 m/s, the secondary air swirl blade installation angle is 40-60 degrees, and the tertiary air wind speed is 40-60 m/s.
8. a method for controlling an aggregate drying pulverized coal burner with a tooth-shaped stable combustion device as claimed in claim 7, characterized in that: and a combustor flaring is arranged between the secondary air port and the tertiary air port of the aggregate drying pulverized coal combustor, the half-opening angle alpha of the combustor flaring is 35 degrees, and the length of the flaring section is equal to the diameter of the primary air outlet.
9. A control method of the aggregate drying pulverized coal burner with the tooth-shaped stable combustion device as claimed in claim 7 or 8, characterized in that: the tooth number of the tooth-shaped combustion stabilizing ring in the step (1) is 24; in the step (2), the wind speed of the primary wind port is 40m/s, the concentration of primary wind coal powder is 0.650-0.700 Kg/s, the preheating temperature of primary wind is 343K, the wind speed of the secondary wind port is 60m/s, the installation angle of a secondary wind cyclone blade is 60 degrees, and the wind speed of the tertiary wind port is 60 m/s.
10. a control method of an aggregate drying pulverized coal burner with a tooth-shaped stable combustion device as claimed in any one of claims 7 to 9, characterized in that: the tooth-shaped combustion stabilizing ring in the step (1) is made of high-temperature ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846503.3A CN110566944A (en) | 2019-09-09 | 2019-09-09 | aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846503.3A CN110566944A (en) | 2019-09-09 | 2019-09-09 | aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566944A true CN110566944A (en) | 2019-12-13 |
Family
ID=68778331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910846503.3A Pending CN110566944A (en) | 2019-09-09 | 2019-09-09 | aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566944A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090000532A1 (en) * | 2007-06-28 | 2009-01-01 | Martin Ehmann | Pulverized coal burner for firing fuel which is fed by dense phase conveyance |
| CN105222132A (en) * | 2015-10-27 | 2016-01-06 | 山东信合节能科技股份有限公司 | A kind of novel low NO |
| CN108954301A (en) * | 2018-08-20 | 2018-12-07 | 内蒙古工业大学 | A kind of spiral-flow type aggregate drying coal burner |
-
2019
- 2019-09-09 CN CN201910846503.3A patent/CN110566944A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090000532A1 (en) * | 2007-06-28 | 2009-01-01 | Martin Ehmann | Pulverized coal burner for firing fuel which is fed by dense phase conveyance |
| CN105222132A (en) * | 2015-10-27 | 2016-01-06 | 山东信合节能科技股份有限公司 | A kind of novel low NO |
| CN108954301A (en) * | 2018-08-20 | 2018-12-07 | 内蒙古工业大学 | A kind of spiral-flow type aggregate drying coal burner |
Non-Patent Citations (2)
| Title |
|---|
| 董永胜等: "旋流燃烧器冷态模化试验研究", 《现代电力》 * |
| 赵伶玲: "旋流燃烧器的稳燃性能分析", 《动力工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107559817B (en) | Rotational flow pulverized coal combustion device and method adopting flue gas recirculation | |
| CN203099814U (en) | Pulverized coal burner | |
| CN102393015A (en) | Dense-phase spiral-flow pulverized-coal burner | |
| PL196858B1 (en) | Method of combusting coal in concentrated streams with nox reduction | |
| CN102062396A (en) | Composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner | |
| CN105737140B (en) | Cyclone combustion device, combustion equipment and combustion method | |
| CN209445351U (en) | A kind of low nitrogen coal burner of adjustable swirl blade | |
| WO2015103832A1 (en) | Classification strengthened low nox pulverized coal burner | |
| CN109931605B (en) | Multistage air distribution radial outer thick and inner thin cyclone burner | |
| CN110319437B (en) | Oxygen-enriched multi-flame rotational flow pulverized coal burner | |
| CN105465780A (en) | Ultralow NOx pulverized coal burner | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN206145669U (en) | Swirling flow pulverized coal burner | |
| CN113339789A (en) | Coking-prevention pulverized coal burner with horseshoe-shaped turbulence teeth | |
| CN208418734U (en) | A kind of low-NOx combustor for natural gas and coal dust | |
| CN209840083U (en) | Multistage air distribution radial outer thick inner thin cyclone burner | |
| CN208418701U (en) | A kind of low-NOx combustor for biomass and combustion of natural gas | |
| CN108397774A (en) | It is a kind of to be used for natural gas and the coal dust individually burner of burning or multifuel combustion | |
| CN2259555Y (en) | Swirl pulverized-fuel pre-combustion chamber combustor | |
| CN109931597A (en) | A kind of fuel staging gasification and low NOXBurning boiler | |
| CN214840783U (en) | Concentrated type double-air-regulation rotational flow low-nitrogen combustor provided with central air | |
| CN211694879U (en) | Low-nitrogen gas burner suitable for medium-low heat value fuel | |
| CN110566944A (en) | aggregate drying pulverized coal burner with tooth-shaped stable combustion device and control method thereof | |
| CN210291864U (en) | Industrial pulverized coal boiler burner with secondary air axial blades with adjustable angle | |
| CN108413382A (en) | A kind of burner for individually burning or being mixed and burned for biomass and natural gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
|
| RJ01 | Rejection of invention patent application after publication |