CN101709870A - Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors - Google Patents
Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors Download PDFInfo
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- CN101709870A CN101709870A CN200910200876A CN200910200876A CN101709870A CN 101709870 A CN101709870 A CN 101709870A CN 200910200876 A CN200910200876 A CN 200910200876A CN 200910200876 A CN200910200876 A CN 200910200876A CN 101709870 A CN101709870 A CN 101709870A
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Abstract
The invention provides hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors, which is characterized in that: six or eight groups of combustors are arranged in a hearth; each group of combustors are vertically provided with at least two oil guns or gas guns at intervals, two fuel blast nozzles and three secondary blast nozzles; the fuel oil or the fuel gas at a fuel oil or fuel gas operation station outlet in front of the furnace is connected with at least two layers of oil guns or gas guns arranged on four walls of a boiler through fuel oil or fuel gas pipelines; and each layer of oil guns or gas guns consist of six or eight oil guns or gas guns which are in the same level but not in the same group. The hexagonal or octagonal tangential arrangement of the fuel-oil or fuel-gas single-fireball direct-flow combustors can ensure that the distance between the uppermost and undermost two oil guns or gas guns and the thermal load of the walls of the combustor area are controlled in ideal ranges, the total height of the boiler is decreased and the manufacturing cost of the boiler is greatly reduced. Because air supplying conditions on two sides of a jet flow are good, flames of the oil guns or gas guns are not easy to attach to the walls and the safety of the work of a water-cooling wall is improved.
Description
Technical field
The present invention relates to the single fireball DC burner hexagonal or the anistree circle of contact arrangement of a kind of fuel oil or combustion gas, belong to the boiler combustion device technical field.
Background technology
The boiler that adopts fuel oil and combustion gas to generate electricity all has the bigger market demand at home and abroad, and these boilers adopt the DC burner quadrangle tangential circle to arrange usually, or the front-back wall layout turbulent burner that liquidates.For oil burning boiler, adopt mechanical atomization, steam atomization and air atomizing usually, for guaranteeing atomization quality, the fuel flow of single oil burner can not be too big, generally need be controlled at about 5000Kg/h.
Along with unit capacity develops into 600MW～1000MW grade, owing to be subjected to the restriction of single oil gun or air gun thermal power, the number needs of oil gun or air gun will increase.Such as a 600MW subcritical boiler, using under the heavy oil condition that calorific value is 10000Kcal/Kg, total heavy oil flux is about 140t/h, calculates if be controlled at about 5000Kg/h according to the fuel flow of single oil burner, needs to arrange 28 oil guns.Owing to oil gun needs maintenance because of reasons such as oily spray orifice wearing and tearing and obstructions when moving, generally to consider 1～2 oil gun as standby oil gun, such four jiaos of layout boilers need be arranged 32 oil guns, every angle is 8 oil guns.And to a 800MW subcritical boiler, using under the heavy oil condition that calorific value is 10000Kcal/Kg, total heavy oil flux is about 187t/h, calculates about 5000Kg/h if be controlled at according to the fuel flow of single oil burner, needs to arrange 37 oil guns.Owing to oil gun needs maintenance because of reasons such as nozzle wear, oily spray orifice obstructions when moving, generally to consider 1～2 oil gun as standby oil gun, such four jiaos of layout boilers need be arranged 40 oil guns, every angle is 10 oil guns.
Fig. 1 and Fig. 2 are example with certain 600MW subcritical boiler, and existing oil gas burner circle of contact arrangement has been described.Fig. 2 is the I-I cutaway view of Fig. 1, and Fig. 1 is the II-II cutaway view of Fig. 2.
Comprise boiler body 1, burner hearth 2, stokehold fuel oil or combustion gas active station 3, fuel oil or gas pipeline 4, oil gun or air gun 5, fuel air nozzle 14, overfire air jet 6 and after-flame wind nozzle 10.Every boiler 1 configuration one cover fuel oil or combustion gas active station.Burner hearth 2 is made up of four sides water-cooling wall 7, is furnished with one group of fuel oil or gas burner 8 on each angle of burner hearth 2, and every group of fuel oil or gas burner 8 are vertically arranged eight oil guns or air gun 5 at interval, as the A1 that is numbered of eight oil guns of 1 bugle or air gun 5, B1, C1, D1, E1, F1, G1, H1; Eight oil guns of 4 bugles or air gun 5 be numbered A4, B4, C4, D4, E4, F4, G4, H4, and 14, nine overfire air jets 6 of eight fuel air nozzles and an after-flame wind nozzle 10.Be positioned at the fuel oil at four angles or the nozzle centerline of gas burner 8 and form imaginary circle 9 at burner hearth 2.Stokehold fuel oil or combustion gas active station 3 are connected with oil gun or air gun 5 by fuel oil or gas pipeline 4.Secondary wind is drawn from air preheater 11, is connected with overfire air jet 6, fuel air nozzle 14 and after-flame wind nozzle 10 in fuel oil or the gas burner 8 by secondary air duct 12.
As seen, because every group of burner 8 vertically is furnished with eight oil guns or air gun at interval, burner device whole height is higher, burner region wall thermic load q
HrLower, cause furnace height higher, the boiler manufacturing cost increases.
Owing to can not produce the problem of furnace wall cooling slagging scorification during fuel-firing gas-firing, therefore can adopt higher burner region wall thermic load q
Hr, be the appropriate design combustion system, reduce the boiler manufacturing cost, need improve existing combustion system, a kind of ideal solution of efficiently utilizing the fuel-firing gas-firing combustion power generation is proposed.
Summary of the invention
The single fireball DC burner hexagonal or the anistree circle of contact arrangement that the purpose of this invention is to provide a kind of fuel oil or combustion gas, be used to use the 600MW～1000MW grade boiler of fuel oil or combustion gas, solve existing 600MW～1000MW grade tangentially-fired boiler burner region wall thermic load q
HrThe low boiler manufacturing cost problem of higher that reaches.
In order to achieve the above object, technical scheme of the present invention has provided the single fireball DC burner hexagonal or the anistree circle of contact of a kind of fuel oil or combustion gas and has arranged, comprise boiler body, burner hearth, stokehold fuel oil or combustion gas active station, fuel oil or gas pipeline, a plurality of oil guns or air gun, a plurality of fuel air nozzles, overfire air jet, furnace outlet heat exchange screen, every boiler body disposes at least one cover stokehold fuel oil or combustion gas active station, burner hearth is made up of the four sides water-cooling wall, it is characterized in that, in burner hearth, arrange six groups or eight groups of burners altogether, every group of burner vertically arranged at least two oil guns or air gun at interval, two fuel air nozzles and three overfire air jets, the nozzle centerline of six groups or eight groups burners forms imaginary circle in burner hearth, stokehold fuel oil or combustion gas active station are connected with oil gun or air gun by fuel oil or gas pipeline, the fuel oil of stokehold fuel oil or combustion gas active station outlet or combustion gas by fuel oil or gas pipeline be arranged in the boiler four sides wall on or at least two layers of oil gun or air gun on four angles be connected, every layer of oil gun or air gun be on the same group six or eight oil guns or air gun phase composition by same absolute altitude but not.
The invention has the beneficial effects as follows:
1, the present invention arranges the mode of six of different angles or eight oil guns or air gun by the same absolute altitude around the boiler, under the prerequisite that satisfies single oil gun or air gun thermal power and total oil gun or air gun quantity, reduce the quantity of the oil gun or the air gun of single group of burner, made the spacing and the burner region wall thermic load q of 2 oil guns in burner highest and lowest or air gun
HrCan be controlled in the desirable scope;
2, the spacing of 2 oil guns in burner highest and lowest or air gun is controlled in the desirable scope, same satisfy go up oil gun most or air gun shields under the prerequisite of end spacing and efficiency of combustion to the furnace outlet heat exchange, make the total height of boiler reduce, greatly reduce the manufacturing cost of boiler;
3, six groups or eight groups of burner arrangement are compared at four jiaos with four groups of burner arrangement on the water-cooling wall wall of boiler four sides, and the tonifying Qi condition of jet both sides is better, are not easy to take place the phenomenon that oil gun or air gun flame paste wall, have improved the security of water-cooling wall work;
4, six groups or eight groups of burner arrangement are on the water-cooling wall wall of boiler four sides, compare at four jiaos with four groups of burner arrangement, jet is shorter from the distance that jet expansion arrives adjacent angle, downstream air-flow, can adopt lower secondary general mood flow velocity degree like this, help reducing the cigarette temperature deviation of the remaining swirl strength and the furnace outlet of fireball;
5, six groups or eight groups of burner arrangement are on the water-cooling wall wall of boiler four sides, compare at four jiaos with four groups of burner arrangement, the heat flow rate per unit area of nozzle exit is higher, improves greatly by convection current and radiation heat transfer amount, helps in time catching fire and boiler low load stable combustion of oil gun or air gun;
6, every group of burner 8 can be further divided at least one group in vertical direction, can control burner region wall thermic load q according to combustion requirements
Hr, guarantee the security of water-cooling wall work.
Description of drawings
Fig. 1 is the elevation of existing arrangement of burner;
Fig. 2 is the plane of existing arrangement of burner, is the I-I cutaway view of Fig. 1;
Fig. 3 is the elevation of arrangement of burner of the present invention, arranges eight groups of burners on four sides wall altogether;
Fig. 4 is the I-I cutaway view of Fig. 3;
Fig. 5 is the elevation of arrangement of burner of the present invention, arranges six groups of burners on four sides wall altogether;
Fig. 6 is the I-I cutaway view of Fig. 5;
Fig. 7 is the elevation of arrangement of burner of the present invention, arranges eight groups of burners altogether on four sides wall and four angles;
Fig. 8 is the I-I cutaway view of Fig. 7;
Fig. 9 is the elevation of arrangement of burner of the present invention, arranges six groups of burners altogether on four sides wall and four angles;
Figure 10 is the I-I cutaway view of Fig. 9.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment 1
In conjunction with Fig. 3 and Fig. 4 present embodiment is described, Fig. 4 is the I-I cutaway view of Fig. 3, and Fig. 3 is the II-II cutaway view of Fig. 4.
The single fireball DC burner hexagonal of a kind of fuel oil provided by the invention or combustion gas or the anistree circle of contact are arranged, comprise boiler body 1, burner hearth 2, stokehold fuel oil or combustion gas active station 3, fuel oil or gas pipeline 4, oil gun or air gun 5, fuel air nozzle 14, overfire air jet 6, after-flame wind nozzle 10 and furnace outlet heat exchange screen 13.Every boiler 1 configuration one cover stokehold fuel oil or combustion gas active station 3.Burner hearth 2 is made up of four sides water-cooling wall 7, on every water-cooling wall 7 of burner hearth 2, be furnished with two groups of burners 8, have eight groups of burners 8, two groups of burners of front wall are respectively 8,8 groups of burners 8 of 1 group of burner, wall two groups of burners in left side are respectively 2 groups of burners 8,3 groups of burners 8, two groups of burners of back wall are respectively 8,5 groups of burners 8 of 4 groups of burners, two groups of burners of right-side wall are respectively 8,7 groups of burners 8 of 6 groups of burners.Every group of burner 8 vertically is furnished with four oil guns or air gun 5 at interval, comprises four oil guns or air gun 5 as 1 group of burner 8, is respectively first oil gun or air gun A1, second oil gun or air gun B1, the 3rd oil gun or air gun C1, the 4th oil gun or air gun D1; 2 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 21 oil gun or air gun A2, the 22 oil gun or air gun B2, the 23 oil gun or air gun C2, the 24 oil gun or air gun D2; 7 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 71 oil gun or air gun A7, the 72 oil gun or air gun B7, the 73 oil gun or air gun C7, the 74 oil gun or air gun D7; 8 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 81 oil gun or air gun A8, the 82 oil gun or air gun B8, the 83 oil gun or air gun C8, the 84 oil gun or air gun D8.Every group of burner 8 also comprises 14, five overfire air jets 6 of four fuel air nozzles, and the nozzle centerline of 10, eight groups of burners 8 of an after-flame wind nozzle forms imaginary circle 9 in burner hearth 2.
Stokehold fuel oil or combustion gas active station 3 are connected with 32 oil guns or air gun 5 by fuel oil or gas pipeline 4.The fuel oil of stokehold fuel oil or combustion gas active station 3 outlets or combustion gas are connected with four layers of oil gun or air gun 5 on being arranged in the boiler four sides wall by fuel oil or gas pipeline 4, by same absolute altitude but not on the same group eight oil guns or air gun 5 phase compositions of every layer of oil gun or air gun 5 are as being made up of first oil gun or air gun A1, the 21 oil gun or air gun A2, the 31 oil gun or air gun A3, the 41 oil gun or air gun A4, the 51 oil gun or air gun A5, the 61 oil gun or air gun A6, the 71 oil gun or air gun A7 and the 81 oil gun or air gun A8.
Secondary wind is drawn from air preheater 11, and by overfire air jet 6, the fuel air nozzle 14 in secondary air duct 12 and the main burner 8, and after-flame wind nozzle 10 is connected, again the spirt burner hearth.
The distance L 1 that is arranged in the edges and corners of the nearest burner hearth 2 of the intersection point of center line of the center line of the oil gun of the burner 8 on the front-back wall or air gun 5 and water-cooling wall 7 is 1/4th of the width Lw of burner hearth 2, that is: L1=1/4Lw.Equally, the distance L 2 that is arranged in the edges and corners of the nearest burner hearth 2 of the intersection point of center line of the center line of the oil gun of the burner 8 on the side wall of the left and right sides or air gun 5 and water-cooling wall 7 is 1/4th of the degree of depth Ld of burner hearth 2, that is: L2=1/4Ld.
Be arranged in the oil gun of the burner 8 on the four sides wall or the center line of air gun 5, with the center line of water-cooling wall 7 intersection point is arranged, the center of circle that connects this intersection point and imaginary circle 9 forms a straight line, and the angle a of the center line of this straight line and oil gun or air gun 5 is four degree, that is: a=4 °.
In conjunction with Fig. 5 and Fig. 6 present embodiment is described, Fig. 6 is the I-I cutaway view of Fig. 5, and Fig. 5 is the II-II cutaway view of Fig. 6.
The difference of present embodiment and embodiment 1 is, on the front-back wall water-cooling wall 7 of burner hearth 2, respectively be furnished with two groups of burners 8, on the left and right sides water-cooling wall 7 of burner hearth 2, respectively be furnished with one group of burner 8, have six groups of burners, two groups of burners of front wall are respectively 8,6 groups of burners 8 of 1 group of burner, wall one group of burner in left side is 2 groups of burners 8, two groups of burners of back wall are respectively 8,4 groups of burners 8 of 3 groups of burners, and one group of burner of right-side wall is 5 groups of burners 8.Every group of burner 8 vertically is furnished with four oil guns or air gun 5 at interval, comprises four oil guns or air gun 5 as 1 group of burner 8, is respectively first oil gun or air gun A1, second oil gun or air gun B1, the 3rd oil gun or air gun C1, the 4th oil gun or air gun D1; 2 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 21 oil gun or air gun A2, the 22 oil gun or air gun B2, the 23 oil gun or air gun C2, the 24 oil gun or air gun D2; 5 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 51 oil gun or air gun A5, the 52 oil gun or air gun B5, the 53 oil gun or air gun C5, the 54 oil gun or air gun D5; 6 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 61 oil gun or air gun A6, the 62 oil gun or air gun B6, the 63 oil gun or air gun C6, the 64 oil gun or air gun D6.The nozzle centerline of six groups of burners 8 forms imaginary circle 9 in burner hearth 2.
Stokehold fuel oil or combustion gas active station 3 are connected with 24 oil guns or air gun 5 by fuel oil or gas pipeline 4.The fuel oil of stokehold fuel oil or combustion gas active station 3 outlets or combustion gas are connected with four layers of oil gun or air gun 5 on being arranged in the boiler four sides wall by fuel oil or gas pipeline 4, by same absolute altitude but not on the same group six oil guns or air gun 5 phase compositions of every layer of oil gun or air gun 5 are as being made up of first oil gun or air gun A1, the 21 oil gun or air gun A2, the 31 oil gun or air gun A3, the 41 oil gun or air gun A4, the 51 oil gun or air gun A5 and the 61 oil gun or air gun A6.
Be arranged in the intersection point of the center line of the center line of the oil gun of the burner 8 on the side wall of the left and right sides or air gun 5 and water-cooling wall 7, the distance L 2 of the edges and corners of nearest burner hearth 2 be burner hearth 2 degree of depth Ld 1/2nd, that is: L2=1/2Ld.
Embodiment 3
In conjunction with Fig. 7 and Fig. 8 present embodiment is described, Fig. 8 is the I-I cutaway view of Fig. 7, and Fig. 7 is the II-II cutaway view of Fig. 8.
The difference of present embodiment and embodiment 1 is, on four angles of burner hearth 2, respectively be furnished with one group of burner 8, on the four sides of burner hearth 2 water-cooling wall 7, respectively be furnished with one group of burner 8, have eight groups of burners, four groups of burners 8 on four angles be 1 group of burner 8,8,7 groups of burners 8 of 8,5 groups of burners of 3 groups of burners, four groups of burners 8 on the four sides wall be numbered 2 groups of burners 8,8,8 groups of burners 8 of 8,6 groups of burners of 4 groups of burners.Every group of burner 8 vertically is furnished with four oil guns or air gun 5 at interval, comprises four oil guns or air gun 5 as 1 group of burner 8, is respectively first oil gun or air gun A1, second oil gun or air gun B1, the 3rd oil gun or air gun C1, the 4th oil gun or air gun D1; 7 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 71 oil gun or air gun A7, the 72 oil gun or air gun B7, the 73 oil gun or air gun C7, the 74 oil gun or air gun D7; 8 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 81 oil gun or air gun A8, the 82 oil gun or air gun B8, the 83 oil gun or air gun C8, the 84 oil gun or air gun D8.
The fuel oil of stokehold fuel oil or combustion gas active station 3 outlets or combustion gas are connected with four layers of oil gun or air gun 5 on being arranged in four angles of boiler and four sides wall by fuel oil or gas pipeline 4, by same absolute altitude but not on the same group eight oil guns or air gun 5 phase compositions of every layer of oil gun or air gun 5 are as being made up of first oil gun or air gun A1, the 21 oil gun or air gun A2, the 31 oil gun or air gun A3, the 41 oil gun or air gun A4, the 51 oil gun or air gun A5, the 61 oil gun or air gun A6, the 71 oil gun or air gun A7 and the 81 oil gun or air gun A8.
The distance L 1 that is arranged in the edges and corners of the nearest burner hearth 2 of the intersection point of center line of the center line of the oil gun of the burner 8 on the front-back wall or air gun 5 and water-cooling wall 7 is 1/2nd of the width Lw of burner hearth 2, that is: L1=1/2Lw.Equally, the distance L 2 that is arranged in the edges and corners of the nearest burner hearth 2 of the intersection point of center line of the center line of the oil gun of the burner 8 on the side wall of the left and right sides or air gun 5 and water-cooling wall 7 is 1/2nd of the degree of depth Ld of burner hearth 2, that is: L2=1/2Ld.
Be arranged in the oil gun of the burner 8 on four angles and the four sides wall or the center line of air gun 5 and the center line of water-cooling wall 7 intersection point is arranged, the center of circle that connects this intersection point and imaginary circle 9 forms a straight line, the angle a of the center line of this straight line and oil gun or air gun 5 is four degree, that is: a=4 °.
In conjunction with Fig. 9 and Figure 10 present embodiment is described, Figure 10 is the I-I cutaway view of Fig. 9, and Fig. 9 is the II-II cutaway view of Figure 10.
The difference of embodiment and embodiment 1 is, on four angles of burner hearth 2, respectively be furnished with one group of burner 8, on the front and back of burner hearth 2 water-cooling wall 7, respectively be furnished with one group of burner 8, have six groups of burners, four groups of burners 8 on four angles be numbered 8,2 groups of burners 8 of 1 group of burner, 4 groups of burners 8,5 groups of burners 8, four groups of burners 8 on the front-back wall be numbered 8,6 groups of burners 8 of 3 groups of burners.The nozzle centerline of six groups of burners 8 forms imaginary circle 9 in burner hearth 2.Every group of burner 8 vertically is furnished with four oil guns or air gun 5 at interval, comprises four oil guns or air gun 5 as 1 group of burner 8, is respectively first oil gun or air gun A1, second oil gun or air gun B1, the 3rd oil gun or air gun C1, the 4th oil gun or air gun D1; 5 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 51 oil gun or air gun A5, the 52 oil gun or air gun B5, the 53 oil gun or air gun C5, the 54 oil gun or air gun D5; 6 groups of burners 8 comprise four oil guns or air gun 5, are respectively the 61 oil gun or air gun A6, the 62 oil gun or air gun B6, the 63 oil gun or air gun C6, the 64 oil gun or air gun D6.
Stokehold fuel oil or combustion gas active station 3 are connected with 24 oil guns or air gun 5 by fuel oil or gas pipeline 4.The fuel oil of stokehold fuel oil or combustion gas active station 3 outlets or combustion gas are connected with four layers of oil gun or air gun 5 on being arranged in four angles of boiler and front-back wall by fuel oil or gas pipeline 4, by same absolute altitude but not on the same group six oil guns or air gun 5 phase compositions of every layer of oil gun or air gun 5 are as being made up of first oil gun or air gun A1, the 21 oil gun or air gun A2, the 31 oil gun or air gun A3, the 41 oil gun or air gun A4, the 51 oil gun or air gun A5 and the 61 oil gun or air gun A6.
The distance L 1 that is arranged in the edges and corners of the nearest burner hearth 2 of the intersection point of center line of the center line of the oil gun of the burner 8 on the front-back wall or air gun 5 and water-cooling wall 7 is 1/2nd of the width Lw of burner hearth 2, that is: L1=1/2Lw.
Be arranged in the oil gun of the burner 8 on four angles and the front-back wall or the center line of air gun 5 and the center line of water-cooling wall 7 intersection point is arranged, the center of circle that connects this intersection point and imaginary circle 9 forms a straight line, the angle a of the center line of this straight line and oil gun or air gun 5 is four degree, that is: a=4 °.
Claims (14)
1. the single fireball DC burner hexagonal of fuel oil or combustion gas or the anistree circle of contact are arranged, comprise boiler body (1), burner hearth (2), stokehold fuel oil or combustion gas active station (3), fuel oil or gas pipeline (4), a plurality of oil guns or air gun (5), a plurality of fuel air nozzles (14), overfire air jet (6), furnace outlet heat exchange screen (13), every boiler body (1) configuration at least one cover stokehold fuel oil or combustion gas active station (3), burner hearth (2) is made up of four sides water-cooling wall (7), it is characterized in that, in burner hearth (2), arrange six groups or eight groups of burners (8) altogether, every group of burner (8) vertically arranged at least two oil guns or air gun (5) at interval, two fuel air nozzles (14) and three overfire air jets (6), the nozzle centerline of six groups or eight groups of burners (8) forms imaginary circle (9) in burner hearth (2), stokehold fuel oil or combustion gas active station (3) are connected with oil gun or air gun (5) by fuel oil or gas pipeline (4), the fuel oil of stokehold fuel oil or combustion gas active station (3) outlet or combustion gas are connected with two layers of oil gun or air gun (5) on being arranged in the boiler four sides wall by fuel oil or gas pipeline (4) at least, and every layer of oil gun or air gun (5) be on the same group six or eight oil guns or air gun (5) phase composition by same absolute altitude but not.
2. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 1 or combustion gas or the anistree circle of contact are arranged, be it is characterized in that every group of burner (8) is further divided at least one group in vertical direction.
3. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 1 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, if arrange eight groups of burners (8) altogether in the burner hearth (2), then are furnished with two groups of burners (8) on every water-cooling wall (7).
4. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 3 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, the distance that is arranged in the edges and corners of the nearest burner hearth (2) of the intersection point of center line of the center line of the oil gun of front wall and the back burner (8) on the wall or air gun (5) and water-cooling wall (7) is L1,1/10Lw≤L1≤4/10Lw, Lw is the width of burner hearth (2), the distance of the edges and corners of the burner hearth (2) that the intersection point of the center line of a wind coal nozzle (5) of the burner (8) on the left of being arranged on wall and the right-side wall and the center line of water-cooling wall (7) is nearest is L2,1/10Ld≤L2≤4/10Ld, Ld are the degree of depth of burner hearth (2).
5. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 3 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, be arranged in the oil gun of the burner (8) on the four sides wall or the center line of air gun (5) and the center line of water-cooling wall (7) intersection point is arranged, the center of circle that connects this intersection point and imaginary circle (9) forms a straight line, the angle of the center line of this straight line and a wind coal nozzle (5) is a, 0 °≤a≤30 °.
6. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 1 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, if arrange eight groups of burners (8) altogether in the burner hearth (2), then on four angles of burner hearth (2), respectively be furnished with one group of burner (8), on the four sides water-cooling wall 7 of burner hearth (2), respectively be furnished with one group of burner (8).
7. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 6 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, the distance that is arranged in the edges and corners of the nearest burner hearth (2) of the intersection point of center line of the center line of the oil gun of front wall and the back burner (8) on the wall or air gun (5) and water-cooling wall (7) is L1,1/5Lw≤L1≤1/2Lw, Lw is the width of burner hearth (2), the distance of the edges and corners of the burner hearth (2) that the intersection point of the center line of a wind coal nozzle (5) of the burner (8) on the left of being arranged on wall and the right-side wall and the center line of water-cooling wall (7) is nearest is L2,1/5Ld≤L2≤1/2Ld, Ld are the degree of depth of burner hearth (2).
8. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 6 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, be arranged in the oil gun of the burner (8) on four angles and the four sides wall or the center line of air gun (5) and the center line of water-cooling wall (7) intersection point is arranged, the center of circle that connects this intersection point and imaginary circle (9) forms a straight line, the angle of the center line of this straight line and a wind coal nozzle (5) is a, 0 °≤a≤30 °.
9. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 1 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, if in burner hearth (2), arrange six groups of burners (8) altogether, then on every relative two sides water-cooling wall (7), be furnished with two groups of burners (8), respectively be furnished with one group of burner (8) on the relative in addition two sides water-cooling wall (7).
10. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 9 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, every face wall is furnished with two groups of burners (8), then the distance of the edges and corners of the nearest burner hearth (2) of the intersection point of the center line of the center line of oil gun or air gun (5) and water-cooling wall (7) is L1,1/10Lw≤L1≤4/10Lw, Lw is the width of burner hearth (2), or the distance of the edges and corners of nearest burner hearth (2) is L2,1/10Ld≤L2≤4/10Ld, Ld is the width of burner hearth (2), if every face wall is furnished with one group of burner (8), then the distance of the edges and corners of the nearest burner hearth (2) of the intersection point of the center line of the center line of oil gun or air gun (5) and water-cooling wall (7) is L1,1/5Lw≤L1≤1/2Lw, Lw is the width of burner hearth (2), or the distance of the edges and corners of nearest burner hearth (2) is L2, and 1/5Ld≤L2≤1/2Ld, Ld are the width of burner hearth (2).
11. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 9 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, be arranged in the oil gun of the burner (8) on the four sides wall or the center line of air gun (5) and the center line of water-cooling wall (7) intersection point is arranged, the center of circle that connects this intersection point and imaginary circle (9) forms a straight line, the angle of the center line of this straight line and a wind coal nozzle (5) is a, 0 °≤a≤30 °.
12. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 1 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, if in burner hearth (2), arrange six groups of burners (8) altogether, then on four angles of burner hearth (2), respectively be furnished with one group of burner (8), wherein respectively be furnished with one group of burner (8) on the two opposite water-cooling walls (7) at burner hearth (2).
13. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 12 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, the distance that is arranged in the edges and corners of the nearest burner hearth (2) of the intersection point of center line of the center line of the oil gun of the burner (8) on the two opposite water-cooling wall walls or air gun (5) and water-cooling wall (7) is L1,1/5Lw≤L1≤1/2Lw, Lw is the width of burner hearth (2), or the distance of the edges and corners of the nearest burner hearth (2) of the intersection point of center line that is arranged in the center line of the oil gun of the burner (8) on the two opposite water-cooling wall walls or air gun (5) and water-cooling wall (7) is L2,1/5Ld≤L2≤1/2Ld, Ld are the degree of depth of burner hearth (2).
14. the single fireball DC burner hexagonal of a kind of fuel oil as claimed in claim 12 or combustion gas or the anistree circle of contact are arranged, it is characterized in that, be arranged in the oil gun of the burner (8) on four angles and the two opposite water-cooling wall walls or the center line of air gun (5) and the center line of water-cooling wall (7) intersection point is arranged, the center of circle that connects this intersection point and imaginary circle (9) forms a straight line, the angle of the center line of this straight line and a wind coal nozzle (5) is a, 0 °≤a≤30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200876XA CN101709870B (en) | 2009-12-25 | 2009-12-25 | Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200876XA CN101709870B (en) | 2009-12-25 | 2009-12-25 | Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101709870A true CN101709870A (en) | 2010-05-19 |
| CN101709870B CN101709870B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910200876XA Active CN101709870B (en) | 2009-12-25 | 2009-12-25 | Hexagonal or octagonal tangential arrangement of fuel-oil or fuel-gas single-fireball direct-flow combustors |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712204A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | Wall type arrangement direct-current pulverized coal combustion technology used for industrial pulverized coal boiler |
| CN111536505A (en) * | 2020-05-13 | 2020-08-14 | 山东祥桓环境科技有限公司 | Direct current and rotational flow combined hearth multi-stage air supply low-nitrogen combustion process and device |
-
2009
- 2009-12-25 CN CN200910200876XA patent/CN101709870B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712204A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | Wall type arrangement direct-current pulverized coal combustion technology used for industrial pulverized coal boiler |
| 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 |
| CN111536505A (en) * | 2020-05-13 | 2020-08-14 | 山东祥桓环境科技有限公司 | Direct current and rotational flow combined hearth multi-stage air supply low-nitrogen combustion process and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101709870B (en) | 2011-05-25 |
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