CN2432448Y - Energy-saving environmental protection straight-flow coal powder burner - Google Patents
Energy-saving environmental protection straight-flow coal powder burner Download PDFInfo
- Publication number
- CN2432448Y CN2432448Y CN 00233461 CN00233461U CN2432448Y CN 2432448 Y CN2432448 Y CN 2432448Y CN 00233461 CN00233461 CN 00233461 CN 00233461 U CN00233461 U CN 00233461U CN 2432448 Y CN2432448 Y CN 2432448Y
- Authority
- CN
- China
- Prior art keywords
- bias current
- straight
- current formula
- separator
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a direct flow coal burner with a drift flow type shade separator, which belongs to a device used on coal burning devices. The utility model is formed by that the drift current type shade separator, a baffle plate, and a flow guiding plate are arranged in a primary wind spout and a flaring section. The outlet end of the drift flow type shade separator is provided with a triangle blunt body. The utility model is characterized in that the drift flow type shade separator is formed by that a plurality of conical blunt bodies are arranged on a bottom plate according to certain intervals. The burner can form high coal concentration and an undulate surface structure on a fire facing face of primary wind jet flow. Consequently, the utility model has the advantages of strong capacity of burning stabilization, adaptation to versatile coal quality, and peak load regulation, conformity with grading burning principle, and function of reducing NO <X>.
Description
The utility model belongs to a kind of burner on the coal-dust combustion device, a kind of burner on particularly a kind of straight-through pulverized coal burner.
Development of electric power industry has proposed more and more higher requirement to pulverized coal combustion.Because generating set participates in peak regulation, requires coal-dust combustion device must have the degree of depth and surely fires ability.Satisfy the needs of peak regulation in general, require the boiler unit must can safe and stable operation exactly at 50% following load.Particularly, realize that it is not easily that this order shows for some unburnable coals.Many still more power plant all are faced with the changeable problem of ature of coal and reduce pollution problems, make realize this goal more difficult.The coal burner that can satisfy above-mentioned requirements in the prior art is seldom, and majority can only kept the slight steady combustion of pulverized-coal fired boiler on certain program, and can not adapt to peak regulation and ature of coal is changeable and reduce the requirement of polluting.With Chinese utility model patent " free and unfettered light minute flow coal-powder combustor of four-way " (number of patent application 95212456.4) is some coal burners of representative, has proved to have good adaptation peak regulation and the changeable ability of ature of coal in actual applications.Problems such as but this class burner all requires a bigger internal reflux district, thereby exists complexity of structure, and size is bigger.For the less boiler of spacing distance of some each time of burner wind snouts, as, using the pulverized-coal fired boiler of bituminous coal, brown coal, this burner is installed certain degree of difficulty.The range of application of the good coal burner of this class performance is restricted.
The purpose of this utility model and task are exactly to provide a kind of straight-through pulverized coal burner with bias current formula dense-and-weak separator at the deficiencies in the prior art and defective, make it to satisfy peak regulation and changeable requirement and the low NO of ature of coal
xRequirement, and simple in structure, bulk is less relatively, can adapt to the needs of the boiler that uses various atures of coal.
The utility model is achieved through the following technical solutions: it is that a wind straight length is connected with rectangular jet by divergent segment.A bias current formula dense-and-weak separator is housed on the straight wall of spout one side, a triangle bluff body is housed at the port of export of this bias current formula dense-and-weak separator.In the divergent segment of a side relative with bias current formula dense-and-weak separator a deflection plate is housed, tail end is connected to a deflector.Between this deflector and the straight wall of spout, leave the side wind snout.The skew wall face that joins with expansion stream plate is provided with secondary wind inlet.It is characterized in that this bias current formula dense-and-weak separator is arranged on the base plate or is directly installed on the spout wall according to certain spacing distance by several taper bluff bodies forms.When a general mood stream that contains coal dust is flowed through this bias current formula dense-and-weak separator, can produce good deep or light separating effect.And can in the breeze airflow of outlet, form the closer to distributing to the high more best coal powder density of the coal powder density at big face place.Can also make simultaneously the side towards the fire of breeze airflow form the waveform surface, thereby increase the active combustion interface greatly.The little bluff body in exit can delay mixing dense, the thin powdered coal air-flow, thereby increases the stability of coal dust firing greatly.Introduce secondary wind by secondary wind inlet and spray from the side air port, can increase the rigidity of primary air jet and prevent that a windage yaw is to water-cooling wall with higher speed.
Accompanying drawing 1 is the utility model embodiment sketch.
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
Accompanying drawing 3 is that the A of accompanying drawing 1 is to view.
Describe theory structure of the present utility model and preferred forms in detail below in conjunction with accompanying drawing: the utility model is to be connected with rectangular jet [6] by divergent segment [3] at the front end of an airduct [1].A deflection plate [2] is housed in divergent segment [3].Another skew wall face almost parallel of this deflection plate and divergent segment.The angle backlash of direction deflection that so just makes a general mood stream is to a side relative with deflection plate.Be equipped with one on the straight wall of this side spout [6] by several taper bluff bodies [11] and come the bias current formula dense-and-weak separator of being formed on the base plate [7] [4].See over from ventilating surface, this each taper bluff body from device all is mountain Cen shape.Form between two taper bluff bodies " defile ".When a wind breeze airflow that contains coal dust, when the effect by deflection plate rushes at bias current formula dense-and-weak separator [4], can only from these " defiles ", pass through.Pulverized coal particle wherein is limited among " defile ", is forced to move to the lowest point along the side of taper bluff body, and the passage of crossing in the bias current formula dense-and-weak separator with air communication flows out.Owing to diminish gradually along air current flow direction actual internal area in bias current formula dense-and-weak separator, thereby the space coal powder density increases sharply.And increase owing to the resistance to air-flow simultaneously, wherein a part of air-flow just can be to the little direction deflection of resistance.Form bias current and walk around the back-fire side inflow burner hearth of separator at spout.In order to make airflow smooth, uniform flow passage is connected to a tilting deflector at the tail end of deflection plate [2].Because the flow area perpendicular to the air current flow direction is in the shape of the letter V in bias current formula dense-and-weak separator, and the opening of V font is towards fiery face one side of the back of the body, and the high concentration pulverized coal air-flow that flows out from bias current formula dense-and-weak separator closes formation the closer to the high more best coal powder density distribution of the coal powder density at the tip of V font.This separator is mounted in side towards the fire (towards the burner hearth center) side of spout.The coal powder density of side towards the fire that has just formed air-flow is the highest, help breeze airflow fire burns.Another ideal effect of bias current formula dense-and-weak separator be the high concentration pulverized coal air-flow after flowing through separator, can form the groove of many V fonts at the side towards the fire of air-flow, the surface area of air-flow is increased greatly, just the active combustion interface increases a lot.This scraggly waveform surface helps flowing heat exchange with the end of high-temperature flue gas simultaneously.The comprehensive function of above-mentioned two kinds of effects is that advantage has been created in catching fire of breeze airflow and steady combustion.At the port of export of bias current formula dense-and-weak separator a triangle bluff body [5] is housed breeze airflow is divided into deep or light two parts, and can prevent too early mixing dense, light air-flow, for steady combustion with reduce NO
xAll favourable.In order to prevent the deflection of general mood stream, introduce secondary wind from secondary wind inlet [9], the space that impales by deflection plate, deflector and burner wall is proofread high speed and is sprayed from side air port [10].To increase the rigidity of a wind, prevent because of the adherent slagging scorification of air-flow.
This kind burner meets the low NO of fractional combustion
xThe theory of combustion can make NO
xDischarge value reduce significantly.
The utility model compared with prior art has the following advantages and beneficial effect: because Can make the side towards the fire coal powder density of breeze airflow improve and greatly increase the active combustion interface, Breeze airflow can be caught fire and smooth combustion smoothly. Thereby greatly improved the accent of boiler unit Peak energy power and the adaptive capacity changeable to ature of coal. Meet the fractional combustion principle and can reduce NOx Discharge value. This burner resistance is little, simple in structure owing to do not need internal reflux district, space Size can reduce significantly, thus make easy for installation, applied widely, being convenient to promote should With.
Claims (5)
1. straight-through pulverized coal burner with bias current formula dense-and-weak separator, it is that front end at a wind straight length [1] is connected with rectangular jet [6] by divergent segment [3].On the straight wall of a side of spout, a bias current formula dense-and-weak separator [4] is housed, a triangle bluff body [5] is housed at the port of export of this bias current formula dense-and-weak separator.In a side divergent segment relative with this bias current formula dense-and-weak separator a deflection plate [2] is housed, tail end connects a deflector [8].Between this deflector and the straight wall of spout, leave side wind snout [10].The skew wall face that joins with deflection plate is provided with secondary wind inlet [9].It is characterized in that this bias current formula dense-and-weak separator is arranged in a base plate [7] by several taper bluff bodies [11] according to certain spacing distance and goes up or be directly installed on the spout wall and form.
2. according to the described a kind of straight-through pulverized coal burner of claim 1, it is characterized in that described taper bluff body is a polygon with the section configuration of the plane cutting that is parallel to base plate [7] with bias current formula dense-and-weak separator.
3. according to claim 1 and 2 described a kind of straight-through pulverized coal burners, it is characterized in that described taper bluff body is a triangle with the section configuration that is parallel to the base plate plane cutting with bias current formula dense-and-weak separator.
4. according to claim 1 and 2 described a kind of straight-through pulverized coal burners, it is characterized in that described taper bluff body is that two base angles are the trapezoidal of acute angle with the section configuration that is parallel to the base plate plane cutting with bias current formula dense-and-weak separator.
5. according to claim 1 and 2 described a kind of straight-through pulverized coal burners, it is characterized in that the section configuration that the pure body of described taper is used to be parallel to the plane cutting of base plate is a closed curve with bias current formula dense-and-weak separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233461 CN2432448Y (en) | 2000-05-22 | 2000-05-22 | Energy-saving environmental protection straight-flow coal powder burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233461 CN2432448Y (en) | 2000-05-22 | 2000-05-22 | Energy-saving environmental protection straight-flow coal powder burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2432448Y true CN2432448Y (en) | 2001-05-30 |
Family
ID=33595806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00233461 Expired - Fee Related CN2432448Y (en) | 2000-05-22 | 2000-05-22 | Energy-saving environmental protection straight-flow coal powder burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2432448Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100523607C (en) * | 2007-09-25 | 2009-08-05 | 深圳东方锅炉控制有限公司 | Direct current coal powder burner |
| CN101865461A (en) * | 2010-06-08 | 2010-10-20 | 上海市特种设备监督检验技术研究院 | Adjustable center feeding rotational flow coal dust shade burner |
| CN102124271A (en) * | 2008-08-21 | 2011-07-13 | 莱利电力公司 | Deflector device for coal piping systems |
| CN102538561A (en) * | 2012-03-01 | 2012-07-04 | 张家港格林沙洲锅炉有限公司 | Variable-diameter connecting tube with flue gas flow guiding device |
| CN103196146A (en) * | 2013-04-07 | 2013-07-10 | 山东大学 | Paper mill sludge combustion device and technique capable of preventing slag-bonding and corrosion of water walls |
| CN103672885A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Vertical thick and thin direct flow coal powder combustion device realizing primary air spray nozzle inside deflection |
| CN108167821A (en) * | 2017-12-13 | 2018-06-15 | 华电电力科学研究院 | Super critical boiler cyclone burner |
| CN108167825A (en) * | 2017-12-26 | 2018-06-15 | 哈尔滨锅炉厂有限责任公司 | A kind of DC burner for low volatile carbon-based fuel |
-
2000
- 2000-05-22 CN CN 00233461 patent/CN2432448Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100523607C (en) * | 2007-09-25 | 2009-08-05 | 深圳东方锅炉控制有限公司 | Direct current coal powder burner |
| CN102124271B (en) * | 2008-08-21 | 2014-03-12 | 莱利电力公司 | Deflector device for coal piping systems |
| CN102124271A (en) * | 2008-08-21 | 2011-07-13 | 莱利电力公司 | Deflector device for coal piping systems |
| CN101865461A (en) * | 2010-06-08 | 2010-10-20 | 上海市特种设备监督检验技术研究院 | Adjustable center feeding rotational flow coal dust shade burner |
| CN101865461B (en) * | 2010-06-08 | 2014-06-04 | 上海市特种设备监督检验技术研究院 | Adjustable center feeding rotational flow coal dust shade burner |
| CN102538561A (en) * | 2012-03-01 | 2012-07-04 | 张家港格林沙洲锅炉有限公司 | Variable-diameter connecting tube with flue gas flow guiding device |
| CN102538561B (en) * | 2012-03-01 | 2013-04-17 | 张家港格林沙洲锅炉有限公司 | Variable-diameter connecting tube with flue gas flow guiding device |
| CN103196146A (en) * | 2013-04-07 | 2013-07-10 | 山东大学 | Paper mill sludge combustion device and technique capable of preventing slag-bonding and corrosion of water walls |
| CN103196146B (en) * | 2013-04-07 | 2015-08-12 | 山东大学 | A kind of paper mill sludge burner and technique preventing water-cooling wall slagging scorification and corrosion |
| CN103672885A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Vertical thick and thin direct flow coal powder combustion device realizing primary air spray nozzle inside deflection |
| CN108167821A (en) * | 2017-12-13 | 2018-06-15 | 华电电力科学研究院 | Super critical boiler cyclone burner |
| CN108167821B (en) * | 2017-12-13 | 2024-03-26 | 华电电力科学研究院 | Cyclone combustion device for supercritical boiler |
| CN108167825A (en) * | 2017-12-26 | 2018-06-15 | 哈尔滨锅炉厂有限责任公司 | A kind of DC burner for low volatile carbon-based fuel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101694295B (en) | W-shaped flame boiler disposing aperture type over-fire air spouts on stove arch | |
| CN201662062U (en) | Cyclone pulverized coal burner | |
| CN105465781A (en) | Low-nitrogen-oxide-emission swirl pulverized coal burner with surrounding air | |
| CN101509659B (en) | Pulverized coal burner | |
| CN111457371A (en) | Low-nitrogen burner | |
| CN2432448Y (en) | Energy-saving environmental protection straight-flow coal powder burner | |
| CN101446412B (en) | Pulverized coal burner | |
| CN203036634U (en) | Fractional combustion low-nitrogen oxide rotational flow burner | |
| CN205227306U (en) | Deep or light hierarchical buggy low NOx burner | |
| CN1407274A (en) | Coal powder direct supplying burner | |
| CN201944836U (en) | Stable-combusting environment-friendly direct current pulverized coal burner | |
| CN1098489A (en) | Coal-powder boiler adjustable concentration low load automatic stable burning and slag-bonding protective device | |
| CN201582804U (en) | Tangential-circle swirl combustion equipment of industrial pulverized-coal fired boiler | |
| CN203656910U (en) | W flame boiler and combustion device thereof | |
| CN2172404Y (en) | Radial thick/thin spiral flow powdered coal burner | |
| CN209840083U (en) | Multistage air distribution radial outer thick inner thin cyclone burner | |
| CN209876911U (en) | Large coal powder concentration ratio delay mixed type rotational flow coal powder burner | |
| CN1043169C (en) | Direct-flow coal-powder burner with combined combustion stabilizer | |
| CN2373685Y (en) | Inertial gradation vortex coal powder burner | |
| CN215597247U (en) | Furnace bottom air-supplementing type opposed firing pulverized coal furnace | |
| CN201297645Y (en) | Secondary blasting device of furnace at lower part of industrial boiler | |
| CN106196042B (en) | A kind of strong swirl jet burner | |
| CN200975674Y (en) | Gas recombustion and two-channel Thick-light integrated type low NOx Combusting device | |
| CN216408946U (en) | High momentum straight flow type coal powder burner | |
| CN201145271Y (en) | Third-order coal-powder combustor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Wei Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |