CN101315184B - Wall type arranged horizontal rich-lean direct current combustion device - Google Patents

Wall type arranged horizontal rich-lean direct current combustion device Download PDF

Info

Publication number
CN101315184B
CN101315184B CN2008100647482A CN200810064748A CN101315184B CN 101315184 B CN101315184 B CN 101315184B CN 2008100647482 A CN2008100647482 A CN 2008100647482A CN 200810064748 A CN200810064748 A CN 200810064748A CN 101315184 B CN101315184 B CN 101315184B
Authority
CN
China
Prior art keywords
water
cooling
center line
wind snout
angle
Prior art date
Application number
CN2008100647482A
Other languages
Chinese (zh)
Other versions
CN101315184A (en
Inventor
吴少华
孙绍增
刘辉
秦明
秦裕琨
Original Assignee
哈尔滨工业大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 哈尔滨工业大学 filed Critical 哈尔滨工业大学
Priority to CN2008100647482A priority Critical patent/CN101315184B/en
Publication of CN101315184A publication Critical patent/CN101315184A/en
Application granted granted Critical
Publication of CN101315184B publication Critical patent/CN101315184B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08Disposition of burners
    • F23C5/10Disposition of burners to obtain a flame ring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08Disposition of burners
    • F23C5/32Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00Combustion apparatus characterised by arrangements for air supply
    • F23C7/02Disposition of air supply not passing through burner

Abstract

A wall-mount horizontal bias direct-flow combustion device relates to a horizontal bias direct-flow combustion device. The invention solves the problems of the prior direct-flow combustor, such as four-corner tangential arrangement, different air supply conditions of coal flows on two sides, high risk of slag deposition due to declination and corrosion at high temperature. First dense/dilute air jet ports and a second air jet port (3) are formed on the water-cooled wall (6) of a furnace cavity (5) and combined to form a group of combustors (7). The central line (31) of the second air jet portand the central line (21) of the first dilute air jet port (2) are positioned in the fire-facing side direction, and have the included angles of alpha 1 and alpha 2 with relative to the water-cooled wall (6), on which the jet ports are positioned. The included angle between the central line (11) of the first dense air jet port and the central line (21) of the first dilute air jet port (2) is alpha3. After-burn air jet ports (4) are arranged on the water-cooled wall (6) or at each corner of the furnace cavity (5). The After-burn air jet ports (4) are positioned above the combustors (7). The wall-mount horizontal bias direct-flow combustion device realizes reasonable combination of coal particles and air, prevents the deflection of coal flow, and ensures stable combustion, low load and lowNOx discharge of boilers.

Description

The horizontal rich-lean direct current combustion device that a kind of wall formula is arranged

Technical field

The present invention relates to a kind of horizontal rich-lean direct current combustion device, be specifically related to the coal-burning boiler technical field.

Background technology

The DC burner quadrangle tangential circle arranges with the turbulent burner front wall or liquidates to arrange it is one of the two big coal dust firing modes the most widely of using in the world wide.The combustion system that quadrangle tangential circle is arranged is that coal dust (wind) and secondary wind are sprayed into burner hearth, the tangential firing of realization coal dust in the tangent mode of four jiaos in burner hearth and burner hearth center one imaginary circle.Four jiaos of flames that quadrangle tangential circle straight flow combustion technology forms can be supported mutually, the flue gas that burning produces rotates rising in stove, characteristics such as have that flame travel is long, the economy height that mixes, burns in the stove, coal adaptability are wide, and be easy to realize air classification air feed, fuel-staged combustion, reduce the NOx discharging, so the DC burner quadrangle tangential circle is arranged in the large-scale thermal power machine group and is widely adopted.

DC burner quadrangle tangential circle layout boiler is in operation and also exposes the problem that some influence safe operation, bigger such as the furnace outlet gas temperature deviation, high temperature corrosion etc. takes place in water-cooling wall slagging scorification easily during the burning sulphur coal, four jiaos of arrangements of these problems and DC burner are relevant.DC burner is arranged in the burner hearth bight, and tangent because of jet direction and burner hearth center one imaginary circle, the burner jet direction is different with the adjacent water-cooling wall angle of two-phase.Burner jet leaves the flue gas that constantly entrainments both sides behind the burner nozzle, burner hearth folding corner region space is less, jet direction is different again with adjacent water-cooling wall angle, low-angle one side (jet back-fire side) is poorer than wide-angle one side (jet warm oneself in front of a fire side) tonifying Qi condition, cause the pressure differential of jet both sides because of jet entrainment, make jet deflection low-angle one side (jet back-fire side), unburnt like this pulverized coal particle washes away the water-cooling wall of coal dust jet back-fire side, and slagging scorification and high temperature corrosion take place easily.For heavy duty boiler, the bight is bigger apart from burner hearth centre distance, for guaranteeing enough jet degree of depth, and the effluxvelocity of having relatively high expectations, this has also aggravated the furnace outlet gas temperature deviation that forms because of the jet rotation.

China's steam coal quality descends to some extent in recent years, and the ature of coal in thermal power plant is changeable, makes stable combustion problem more outstanding, and simultaneous adaptation network load and environmental protection demand improve constantly the underload ability and the low NOx drainage performance demands of boiler.Patent publication No. is CN 1069560A, open day be that the patent of invention on March 3rd, 1993 discloses " a kind of concentrated coal-ash burner ", this burner plays a good role to alleviating the problems referred to above.The horizontal bias combustion technology is by special enrichment facility a wind to be divided into dense, light two strands of air-flows, dense, light two strands of general mood flow points not on same horizontal plane angled four jiaos tangentially inject burner hearth, form the different circle of contacts, arrange dense general mood stream in the side of waring oneself in front of a fire, and arrange light general mood stream at back-fire side.A dense wind is easy to catch fire, and is favourable to steady combustion and underload, and a deep or light separation of wind realizes that fractional combustion is effectively to reducing NOx, and the structure of a wind " interior dense outer light " can alleviate high temperature corrosion and slagging scorification.This technology can solve efficiently simultaneously, the requirement of steady combustion, underload, low NOx drainage.The burner of horizontal bias combustion technology all is to adopt four jiaos of layouts of burner hearth at present, and deflection takes place breeze airflow easily, has limited the effect of horizontal bias combustion technology to a certain extent.

Summary of the invention

The purpose of this invention is to provide the horizontal rich-lean direct current combustion device that a kind of wall formula is arranged, arrange to solve the DC burner quadrangle tangential circle, deflection easily takes place and causes slagging scorification and high temperature corrosion problem in breeze airflow both sides tonifying Qi condition difference.Can also satisfy simultaneously the requirement of efficient, the steady combustion of pulverized-coal fired boiler, underload, low NOx drainage.

The present invention solves the problems of the technologies described above the technical scheme of taking to be: burner of the present invention is made up of burner hearth, an a plurality of dense wind snout, an a plurality of light wind snout, a plurality of overfire air port and four groups of after-flame wind snouts, and described burner hearth is surrounded by the four sides water-cooling wall; Be respectively arranged with a plurality of dense wind snouts on the four sides water-cooling wall of described burner hearth, a plurality of light wind snouts and a plurality of overfire air port, an a plurality of dense wind snout that is provided with on described each water-cooling wall, a plurality of light wind snouts and a plurality of overfire air port constitute one group of burner, described four groups of burners are separately positioned on the same horizontal plane, overfire air port in described every group of burner and a dense wind snout and a light wind snout alternatively up and down are provided with, an adjacent dense wind snout and a light wind snout is arranged in the same horizontal plane in every group of burner, and the angle of the center line of described overfire air port between the water-cooling wall at side direction and its place that warms oneself in front of a fire is α 1, the angle of the center line of a described light wind snout between the water-cooling wall at side direction and its place that warms oneself in front of a fire is α 2, the angle between the center line of the center line of a dense wind snout and a light wind snout is α 3On described every water-cooling wall or each edges and corners of burner hearth are provided with one group of after-flame wind snout, and the after-flame wind snout is arranged on the top of burner, overlook downwards when watching from burner hearth top, the angle that the center line of the after-flame wind snout on described each corner angle that is arranged on burner hearth is adjacent between the side wall in the clockwise direction is α 4, the described center line that is arranged on the after-flame wind snout on each water-cooling wall is α at the angle of warm oneself in front of a fire side direction and its place water-cooling wall 5

The invention has the beneficial effects as follows: the present invention is arranged in the DC burner of traditional arrangement in four jiaos in burner hearth on the wall of burner hearth four sides, improve greatly than the tonifying Qi condition in bight space in the space near the burner hearth wall, especially the tonifying Qi condition of jet both sides is close, can reduce the air-flow deflection that causes because of jet both sides tonifying Qi condition difference so greatly, alleviate therefore and the water-cooling wall slagging scorification and the high temperature corrosion that produce.Arrange on the wall of burner four sides that forming the needed stream distance of the circle of contact arranges that less than angie type jet forms the needed stream distance of the circle of contact, burner can adopt first and second less wind speed, thereby has reduced whirlpool intensity that jet forms and the cigarette temperature deviation of the furnace outlet that produces because of eddy flow.In addition, because the DC burner that the present invention adopts is the horizontal bias burner, be beneficial to steady combustion, underload and low NOx drainage to boiler, the horizontal bias burner arrangement is on the wall of burner hearth four sides simultaneously, near the burner heat flow density is greater than the heat flow density that is arranged in the burner hearth bight, help coal powder ignition, be convenient to implement fractional combustion, further surely combustion, underload and the advantage that alleviates slagging scorification, high temperature corrosion and low NOx drainage of the horizontal bias combustion of reinforcement, the horizontal bias combustion efficiency is good.DC burner wall formula is arranged, the imaginary circle that wind snout center line, an overfire air port center line form in burner hearth is generally big than the imaginary circle that angie type is arranged, the requirement of each spout of burner and water-cooling wall angle is arranged low than angie type, be convenient to install the location.

Description of drawings

Fig. 1 is an overall structure front view of the present invention, Fig. 2 is a dense wind snout 1, the main cutaway view that a light wind snout 2 and overfire air port 3 are combined, Fig. 3 is the A-A profile of Fig. 2, Fig. 4 is a dense wind snout 1 that is contained on the four sides water-cooling wall 6 of burner hearth 5, the vertical view of a light wind snout 2 and the center line of overfire air port 3 (angle that the center line of a light wind snout 2 and overfire air port 3 is become with the water-cooling wall 6 at its place respectively at the side direction that warms oneself in front of a fire greater than 54 ° smaller or equal to 90 °), the center line 41 that Fig. 5 is arranged on the after-flame wind snout 4 on each corner angle of burner hearth 5 is adjacent the vertical view of angle between the side wall 6 in the clockwise direction, Fig. 6 is the vertical view that is contained in the center line 41 of the after-flame wind snout 4 on the four sides water-cooling wall 6 of burner hearth 5 (angle that the center line 41 of after-flame wind snout 4 is become between warm oneself in front of a fire side direction and its place water-cooling wall 6 greater than 54 ° smaller or equal to 90 °), Fig. 7 is the vertical view that is contained in the center line 41 of the after-flame wind snout 4 on the four sides water-cooling wall 6 of burner hearth 5 (angle that the center line 41 of after-flame wind snout 4 is become between warm oneself in front of a fire side direction and its place water-cooling wall 6 more than or equal to 90 ° less than 127 °), and Fig. 8 is a dense wind snout 1 that is contained on the four sides water-cooling wall 6 of burner hearth 5, the vertical view of a light wind snout 2 and the center line of overfire air port 3 (angle that the center line of a light wind snout 2 and overfire air port 3 is become with the water-cooling wall 6 at its place respectively at the side direction that warms oneself in front of a fire more than or equal to 90 ° less than 127 °).

The specific embodiment

The specific embodiment one: present embodiment is described in conjunction with Fig. 1~Fig. 8, present embodiment is by burner hearth 5, a plurality of dense wind snouts 1, a plurality of light wind snouts 2, a plurality of overfire air ports 3 and four groups of after-flame wind snouts 4 are formed, described burner hearth 5 is surrounded by four sides water-cooling wall 6, be respectively arranged with a plurality of dense wind snouts 1 on the four sides water-cooling wall 6 of described burner hearth 5, a plurality of light wind snouts 2 and a plurality of overfire air port 3, an a plurality of dense wind snout 1 that is provided with on described each water-cooling wall 6, a plurality of light wind snouts 2 and a plurality of overfire air port 3 constitute one group of burner 7, described four groups of burners 7 are separately positioned on the same horizontal plane, overfire air port 3 and a dense wind snout 1 and a light wind snout 2 alternatively up and down settings in described every group of burner 7, an adjacent dense wind snout 1 and a light wind snout 2 is arranged in the same horizontal plane in every group of burner 7, and the angle of the center line 31 of described overfire air port 3 between the water-cooling wall 6 at side direction and its place that warms oneself in front of a fire is α 1, the angle of the center line 21 of a described light wind snout 2 between the water-cooling wall 6 at side direction and its place that warms oneself in front of a fire is α 2, the angle between the center line 11 of a dense wind snout 1 and the center line 21 of a light wind snout 2 is α 3On described every water-cooling wall 6 or each edges and corners of burner hearth 5 are provided with one group of after-flame wind snout 4, and after-flame wind snout 4 is arranged on the top of burner 7, overlook downwards when watching from burner hearth 5 tops, the angle that the center line 41 of the after-flame wind snout 4 on described each corner angle that is arranged on burner hearth 5 is adjacent between the side wall 6 in the clockwise direction is α 4, the described center line 41 that is arranged on the after-flame wind snout 4 on each water-cooling wall 6 is α at the angle of warm oneself in front of a fire side direction and its place water-cooling wall 6 5

In the present embodiment, each organizes burner 7, and to be arranged in the position of four sides on the water-cooling wall 6 identical with the angle of its place water-cooling wall 6 at the side direction that warms oneself in front of a fire with each spout center line.By the bigger breeze airflow of coal powder density difference, the center line 41 of after-flame wind snout 4 guarantees that apart from wind distance between center line of the superiors gas residence time is 0.3~1.2s in vertical direction respectively for a dense wind snout 1 and a light wind snout 2.

In the present embodiment, the quantity of a described dense wind snout 1 is two~ten, and the quantity of a described light wind snout 2 is two~ten, and the quantity of described overfire air port 3 is three~11, and the quantity of described every group of after-flame wind snout 4 is one to six.

The specific embodiment two: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the joining on the center line 31 that present embodiment is arranged on the overfire air port 3 on each water-cooling wall 6 and the water-cooling wall 6 at its place is L apart from the distance of the edges and corners of nearest burner hearth 5 1, 1/5Lk≤L 1≤ 1/2Lk; Perhaps 1/5Ls≤L 1≤ 1/2Ls, described Lk are furnace width, and described Ls is a furnace depth.The center line 31 of the overfire air port 3 of present embodiment is 54 °≤α at the angle of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 1≤ 127 °, the center line 21 of a described light wind snout 2 is 54 °≤α at the angle of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 2≤ 127 °, the 0 °≤α of angle between the center line 11 of a described dense wind snout 1 and the center line 21 of a light wind snout 2 3≤ 15 °, dense primary air jet is arranged in the side of waring oneself in front of a fire, and light primary air jet is arranged in back-fire side, and after-flame wind share accounts for 10%~40% of total blast volume.Joining on the center line that is arranged on the after-flame wind snout 4 on each water-cooling wall 6 41 of present embodiment and the water-cooling wall 6 at its place is L apart from the distance of the edges and corners of nearest burner hearth 5 2, 1/5Lk≤L 2≤ 1/2Lk; Perhaps 1/5Ls≤L 2≤ 1/2Ls, described Lk are furnace width, and described Ls is a furnace depth.The center line 41 of the after-flame wind snout 4 on each water-cooling wall 6 is 54 °≤α at the angle of warm oneself in front of a fire side direction and its place water-cooling wall 6 5Center line 41 positions of≤127 ° of after-flame wind snouts 4 with center line 31 positions of the angle of its place water-cooling wall 6 and overfire air port 3 and identical with the angle of its place water-cooling wall 6.So be provided with, can reduce the generation of slagging scorification and high temperature corrosion, satisfy the requirement of efficient, the steady combustion of pulverized-coal fired boiler, underload, low NOx drainage.Other composition and annexation are identical with the specific embodiment one.

The specific embodiment three: present embodiment is described in conjunction with Fig. 5, the after-flame wind snout 4 of present embodiment is arranged on each corner angle of burner hearth 5, overlook downwards when watching from burner hearth 5 tops, the angle that the center line 41 of after-flame wind snout 4 is adjacent between the side wall 6 in the clockwise direction is 20 °≤α 4≤ 70 °.So be provided with, after-flame wind is arranged and is convenient to realize that the burner hearth degree of filling of combustion-gas flow is better.Other composition and annexation are identical with the specific embodiment two.

The specific embodiment four: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment two is: the joining on the center line that is arranged on the overfire air port 3 on each water-cooling wall 6 31 of present embodiment and the water-cooling wall 6 at its place is apart from the distance L of the edges and corners of nearest burner hearth 5 1=1/4 furnace width Lk or furnace depth Ls.The center line 31 of every overfire air port 3 is at the angle α of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 1=90 °, promptly the center line 31 of every overfire air port 3 is perpendicular to place water-cooling wall wall, and the center line 21 of a light wind snout 2 is at the angle α of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 2=90 °, the center line 21 that is every light wind snout 2 is perpendicular to the place water-cooling wall, the direction setting of the center line 11 vertical place water-cooling walls 6 of every dense wind snout 1, dense wind in the present embodiment, a light wind and secondary wind jet are all perpendicular to four sides water-cooling wall 6, the tonifying Qi condition of jet both sides is close, can effectively prevent because the air-flow deflection that jet both sides tonifying Qi condition difference causes thereby alleviate burner hearth 5 high temperature corrosion and slagging scorification takes place.And the flue gas stream degree of filling is good, is beneficial to the coal dust burn-off rate.

The specific embodiment five: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment four is: the center line 21 of a light wind snout 2 of present embodiment is α at the angle of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 2=85 °, the angle between the center line 11 of a dense wind snout 1 and the center line 21 of a light wind snout 2 is α 3=0 °.So be provided with, the imaginary circle of secondary wind in burner hearth 5 be the imaginary circle in burner hearth 5 greater than dense wind and a light wind, form the air flow structure of " bellows chamber powder ", can effectively prevent high temperature corrosion and water-cooling wall slagging scorification, the horizontal direction of secondary wind is postponed and is sneaked into combustion-gas flow, can reduce the generation of NOx, the NOx discharging can reduce by 2%~5% on the basis of the specific embodiment four.

The specific embodiment six: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment four is: the center line 21 of a light wind snout 2 of present embodiment is α at the angle of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 2=82 °.So be provided with, dense wind and the imaginary circle of a light wind in burner hearth 5 are little than the specific embodiment five, the horizontal direction of secondary wind is postponed and is sneaked into combustion-gas flow, can further reduce the generation of NOx, and the discharging of NOx can reduce by 2%~3% on the basis of the specific embodiment five.

The specific embodiment seven: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment four is: the center line 21 of a light wind snout 2 of present embodiment is α at the angle of the water-cooling wall 6 at warm oneself in front of a fire side direction and its place 2=78 °.So be provided with, dense wind and the imaginary circle of a light wind in burner hearth 5 are little than the specific embodiment five, the horizontal direction of secondary wind is postponed and is sneaked into combustion-gas flow, can further reduce the generation of NOx, and the discharging of NOx can reduce by 2%~3% on the basis of the specific embodiment six.

The specific embodiment eight: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment six is: the angle α between the center line 11 of a dense wind snout 1 of present embodiment and the center line 21 of a light wind snout 2 3=5 °.So be provided with, secondary wind, a light wind and a dense wind form the different imaginary circle of diameter respectively in burner hearth 5, the imaginary circle maximum of secondary wind, a light wind take second place, the imaginary circle minimum of a dense wind, form the air flow structure of " bellows chamber powder ", can effectively prevent high temperature corrosion and water-cooling wall slagging scorification, secondary wind, the different air of having postponed in the horizontal direction with dense primary air jet angle of a light wind are sneaked into combustion-gas flow, can reduce the generation of NOx, the discharging of NOx can reduce by 2%~3% on the basis of the specific embodiment six.

The specific embodiment nine: in conjunction with Fig. 1, Fig. 4 and Fig. 8 present embodiment is described, the difference of the present embodiment and the specific embodiment two is: the joining on the center line that is arranged on the overfire air port 3 on each water-cooling wall 6 31 of present embodiment and the water-cooling wall 6 at its place is apart from the distance L of the edges and corners of nearest burner hearth 5 1=1/2 furnace width Lk or furnace depth Ls.So be provided with, promptly overfire air port 3 is arranged on the center line of water-cooling wall 6.Near the water-cooling wall 6 thermic load maximum helps the steady combustion of coal dust, is applicable to unburnable coal, and the minimum steady of present embodiment combustion load is lower than the minimum steady combustion load 10%~20% that the burner angie type is arranged under the same terms.

Claims (6)

1. the horizontal rich-lean direct current combustion device arranged of a wall formula, described burner is made up of burner hearth (5), a plurality of dense wind snouts (1), a plurality of light wind snouts (2), a plurality of overfire air port (3) and four groups of after-flame wind snouts (4), and described burner hearth (5) is surrounded by four sides water-cooling wall (6); It is characterized in that being respectively arranged with a plurality of dense wind snouts (1) on the four sides water-cooling wall (6) of described burner hearth (5), a plurality of light wind snouts (2) and a plurality of overfire air port (3), described every water-cooling wall (6) is gone up an a plurality of dense wind snout (1) that is provided with, a plurality of light wind snouts (2) and a plurality of overfire air port (3) constitute one group of burner (7), four groups of burners (7) are separately positioned on the same horizontal plane, overfire air port (3) in described every group of burner (7) and a dense wind snout (1) and a light wind snout (2) alternatively up and down setting, a dense wind snout (1) and a light wind snout (2) adjacent in every group of burner (7) are arranged in the same horizontal plane, and the angle of the center line (31) of described overfire air port (3) between the water-cooling wall (6) at warm oneself in front of a fire side direction and its place is α 1, the angle of the center line (21) of a described light wind snout (2) between the water-cooling wall (6) at warm oneself in front of a fire side direction and its place is α 2, the angle between the center line (11) of a dense wind snout (1) and the center line (21) of a light wind snout (2) is α 3Described every water-cooling wall (6) is gone up or each edges and corners of burner hearth (5) are provided with one group of after-flame wind snout (4), and after-flame wind snout (4) is arranged on the top of burner (7), overlook downwards when watching from burner hearth (5) top, the angle that the center line (41) of the after-flame wind snout (4) on described each corner angle that is arranged on burner hearth (5) is adjacent between the side wall (6) in the clockwise direction is α 4, the described center line (41) that is arranged on the after-flame wind snout (4) on every water-cooling wall (6) is α at the angle of warm oneself in front of a fire side direction and its place water-cooling wall (6) 5
2. the horizontal rich-lean direct current combustion device that a kind of wall formula according to claim 1 is arranged is characterized in that the joining on the water-cooling wall (6) at the described center line (31) that is arranged on the overfire air port (3) on each face water-cooling wall (6) and its place is L apart from the distance of the edges and corners of nearest burner hearth (5) 1, 1/5 Lk≤L 1≤ 1/2Lk; Perhaps 1/5 Ls≤L 1≤ 1/2Ls, described Lk are furnace width, and described Ls is a furnace depth.
3. the horizontal rich-lean direct current combustion device that a kind of wall formula according to claim 1 is arranged is characterized in that the center line (31) of described overfire air port (3) is 54 °≤α at the angle of the water-cooling wall (6) at warm oneself in front of a fire side direction and its place 1≤ 127 °, the center line (21) of a described light wind snout (2) is 54 °≤α at the angle of the water-cooling wall (6) at warm oneself in front of a fire side direction and its place 2≤ 127 °, the 0 °≤α of angle between the center line (11) of a described dense wind snout (1) and the center line (21) of a light wind snout (2) 3≤ 15 °, dense primary air jet is arranged in the side of waring oneself in front of a fire, and light primary air jet is arranged in back-fire side.
4. the horizontal rich-lean direct current combustion device that a kind of wall formula according to claim 1 is arranged, it is characterized in that overlooking downwards when watching from burner hearth (5) top, the angle that the center line (41) of the after-flame wind snout (4) on described each corner angle that is arranged on burner hearth (5) is adjacent between the side wall (6) in the clockwise direction is 20 °≤α 4≤ 70 °.
5. the horizontal rich-lean direct current combustion device that a kind of wall formula according to claim 1 is arranged is characterized in that the joining on the water-cooling wall (6) at the described center line (41) that is arranged on the after-flame wind snout (4) on each water-cooling wall (6) and its place is L apart from the distance of the edges and corners of nearest burner hearth (5) 2, 1/5 Lk≤L 2<≤1/2Lk; Perhaps 1/5 Ls≤L 2≤ 1/2Ls, described Lk are furnace width, and described Ls is a furnace depth.
6. the horizontal rich-lean direct current combustion device that a kind of wall formula according to claim 1 is arranged is characterized in that the described center line (41) that is arranged on the after-flame wind snout (4) on each water-cooling wall (6) is 54 °≤α at the angle of warm oneself in front of a fire side direction and its place water-cooling wall (6) 5≤ 127 °.
CN2008100647482A 2008-06-17 2008-06-17 Wall type arranged horizontal rich-lean direct current combustion device CN101315184B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100647482A CN101315184B (en) 2008-06-17 2008-06-17 Wall type arranged horizontal rich-lean direct current combustion device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN2008100647482A CN101315184B (en) 2008-06-17 2008-06-17 Wall type arranged horizontal rich-lean direct current combustion device
PCT/CN2008/001800 WO2009152654A1 (en) 2008-06-17 2008-10-24 Horizontal thick and thin direct-current pulverized coal burner arranged by wall type
RS20100550A RS53219B (en) 2008-06-17 2008-10-24 Horizontal thick and thin direct-current pulverized coal burner arranged by wall type
EA201170032A EA019175B1 (en) 2008-06-17 2008-10-24 Horizontal thick and thin direct-current pulverized coal burner arranged by wall type
TR2010/10283T TR201010283T1 (en) 2008-06-17 2008-10-24 Wall-fired horizontal cross-burning equipment for pulverized coal.
BRPI0822881-7A BRPI0822881A2 (en) 2008-06-17 2008-10-24 Heavy and thin horizontal DC pulverized coal arranged by wall type

Publications (2)

Publication Number Publication Date
CN101315184A CN101315184A (en) 2008-12-03
CN101315184B true CN101315184B (en) 2010-06-09

Family

ID=40106279

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008100647482A CN101315184B (en) 2008-06-17 2008-06-17 Wall type arranged horizontal rich-lean direct current combustion device

Country Status (6)

Country Link
CN (1) CN101315184B (en)
BR (1) BRPI0822881A2 (en)
EA (1) EA019175B1 (en)
RS (1) RS53219B (en)
TR (1) TR201010283T1 (en)
WO (1) WO2009152654A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852429A (en) * 2010-06-29 2010-10-06 哈尔滨工业大学 Wall-arranged direct-flow pulverized coal combustion device with side secondary air

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101598333B (en) * 2009-06-30 2012-09-26 上海锅炉厂有限公司 Low-nitrogen oxide discharging coal powder tangential combustion device
CN102012020B (en) * 2010-12-18 2013-05-08 华北电力大学(保定) Horizontal swinging wall type tangential circle combustion method and combustion device
CN102338374B (en) * 2011-09-28 2013-09-04 南京创能电力科技开发有限公司 In-furnace grading low-NOx combustion system of low-temperature plasma rotational flow coal powder furnace
CN103090406B (en) * 2011-11-01 2015-05-20 嘉兴市特种设备检测院 Biomass boiler
CN102494333B (en) * 2011-11-14 2014-09-03 上海锅炉厂有限公司 Anthracite-combusted single fire ball four-corner direct current burner
CN102563634B (en) * 2011-11-14 2015-02-18 上海锅炉厂有限公司 Coal dust thickness-thinness separating and distributing structure of single-fireball eight-corner direct-flow burner
CN103225805B (en) * 2013-04-24 2015-03-18 广东电网公司电力科学研究院 Boiler apparatus for preventing high temperature corrosion of water screen and method therefor
CN104622271B (en) * 2013-11-15 2017-06-16 广东美的厨房电器制造有限公司 Steam cooking vessel
CN103712204B (en) * 2013-12-13 2016-05-11 山西蓝天环保设备有限公司 A kind of wall formula for industrial coal powder boiler is arranged direct-flow pulverized coal combustion device
CN109812803B (en) * 2019-01-17 2020-04-07 上海理工大学 Low-load stable combustion boiler combustor and combustion method and application thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077939A (en) * 1973-11-15 1975-06-25
JPH0652122B2 (en) * 1987-05-14 1994-07-06 三菱重工業株式会社 Coal burning equipment
JPH0577939A (en) * 1991-09-20 1993-03-30 Nec Corp Paper width detecting device
JPH08178210A (en) * 1994-12-26 1996-07-12 Mitsubishi Heavy Ind Ltd Burner of furnace for gyratory combustion
CN100387902C (en) * 2006-02-21 2008-05-14 西安热工研究院有限公司 Novel three-region two-stage overfire air arrangement mode for wall type boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852429A (en) * 2010-06-29 2010-10-06 哈尔滨工业大学 Wall-arranged direct-flow pulverized coal combustion device with side secondary air

Also Published As

Publication number Publication date
CN101315184A (en) 2008-12-03
RS53219B (en) 2014-08-29
EA201170032A1 (en) 2011-06-30
RS20100550A (en) 2011-08-31
BRPI0822881A2 (en) 2015-07-07
WO2009152654A1 (en) 2009-12-23
EA019175B1 (en) 2014-01-30
TR201010283T1 (en) 2011-03-21

Similar Documents

Publication Publication Date Title
US4708638A (en) Fluid fuel fired burner
US4501204A (en) Overfire air admission with varying momentum air streams
CN102721043B (en) Pulverized coal fired boiler with wall-attachment secondary air and grid burning-out air
CN103277795B (en) Gas burner capable of adjusting gas to be self-recycling
CN107606606B (en) Central powder feeding omega-shaped industrial pulverized coal boiler adopting flue gas recirculation
CN101825278B (en) Oxygen-rich combustor
CN1333199C (en) W-shape flame furnace with gradation coal burner
CN201706487U (en) Anthracite powdered coal burner for a rotary kiln
CN100491821C (en) Dense-phase back-flushing multiple level NOx combustion method
JP2606779B2 (en) Low NOx burner system
CN204678328U (en) combustion powder industrial boiler
CN204165045U (en) Warm flue gas recirculation coal powder burner in one
CN101694295B (en) W-shaped flame boiler disposing aperture type over-fire air spouts on stove arch
CN101725969B (en) Low-NOx pulverized coal burner
CN201126192Y (en) Plasma ignition combustor
CN102777894B (en) Reverse powder injection combustor
CN201680364U (en) Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers
CN103615717A (en) Novel oxygen enrichment tiny-oil ignition and ultralow load stable-combustion combustor
CN103267279B (en) Low-nitric-oxide direct-current pulverized coal combustor adaptive to meager coal boiler
CN201954529U (en) DC (direct current) combustor layout structure of cut oval pulverized coal fired boiler
CN103134049B (en) A kind of multiple dimensioned coal dust decoupling combustion device of the polygonal circle of contact and decoupling burning method thereof
CN204165044U (en) The premixed coal dust low NO of a kind of adverse current
WO2011000136A1 (en) Tangential pulverized coal combustion device for low nox emission
CN102353049A (en) Stable combustion device for pulverized coal ignition
CN103216821B (en) Multi-stage stratified combustion system and method for primary air and secondary air of 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
C14 Grant of patent or utility model
GR01 Patent grant