CN212108366U

CN212108366U - Combustor and stove

Info

Publication number: CN212108366U
Application number: CN202020617194.0U
Authority: CN
Inventors: 宋华; 李伟; 白文凯; 张海燕; 刘忠攀; 王海苗; 杨晓辉; 白浩隆; 冯强
Original assignee: Yankuang Technology Co ltd; Yankuang Group Corp Ltd
Current assignee: Yankuang Technology Co ltd; Shandong Energy Group Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-12-08
Anticipated expiration: 2030-04-22

Abstract

The utility model provides a combustor and stove relates to civilian combustion apparatus technical field. The combustor comprises a shell and an air distribution plate which is obliquely and upwards arranged in the shell. The air distribution plate divides the inner space of the shellForming an upper combustion chamber and a lower ventilation chamber; the air distribution plate comprises an isolation section and an upper convex curve section which are sequentially connected from bottom to top, and a plurality of first vent holes are dispersedly arranged on the upper convex curve section; a fuel supply port and an ash discharge port are respectively arranged at the lower end and the high end of the upper combustion chamber along the inclination direction of the air distribution plate; one end of the lower ventilation chamber is provided with a primary air inlet. The combustor can realize the full combustion of fuel and effectively reduce CO and NO_xAnd the emission of pollutant gases is waited, the carbon residue in ash and slag is reduced, the smokeless combustion is realized, the slag is removed smoothly, and the combustion requirements of various fuels can be met.

Description

Combustor and stove

Technical Field

The utility model relates to a civilian combustion apparatus technical field especially relates to a combustor and stove.

Background

In recent years, as a bottom-entry clean heating scheme other than "gas-to-coal" and "electricity-to-coal", combustion equipment such as an automated oven has been rapidly developed in the field of clean heating for civilian use.

However, due to the limitation of burner technology, there are still many problems in the current civil automatic stoves, which affect the marketable development of stoves. Mainly, the existing burner has the following disadvantages when in use: the combustion is insufficient, the slag removal capability is poor, only the fuels such as biomass, semi-coke, anthracite and the like with the ash content not higher than 10% can be combusted, when the fuels such as straws and the like with the ash content higher than 10% are combusted, coke blocks in the combustor can be difficult to remove, and the combustion effect is poor; fuel suitabilityPoor, only biomass or coal with volatile content less than 10% can be burned, and biomass and coal cannot be burned simultaneously; in particular, for the combustion of bituminous coal which accounts for more than 70% of coal resources, serious smoke generation, CO and NO occur_xHigh, difficult slag removal, high carbon residue of bottom slag, poor combustion stability and the like.

Accordingly, there is a need for a burner and a stove to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combustor and stove can make the fuel fully burn, effectively reduces CO and NO_xThe emission of pollutant gas is waited for, and the carbon residue volume in the lime-ash is effectively reduced, realizes smokeless burning, and the scarfing cinder ability is good, can satisfy the burning demand of multiple fuel.

To achieve the purpose, the utility model adopts the following technical proposal:

a burner, comprising:

a housing;

the air distribution plate is obliquely and upwards arranged in the shell and divides the inner space of the shell into an upper combustion chamber and a lower ventilation chamber, the air distribution plate comprises an isolation section and an upper convex curve section which are sequentially connected from bottom to top, and a plurality of first vent holes are dispersedly arranged on the upper convex curve section;

along the inclination direction of the air distribution plate, the upper combustion chamber is provided with a low end and a high end, the low end is provided with a fuel supply port, and the high end is provided with an ash discharge port;

one end of the lower ventilation chamber is provided with a primary air inlet.

Optionally, the cross-sectional area of the upper combustion chamber above the isolation section in the direction in which the air distribution plate is inclined upward increases first and then decreases.

Optionally, the isolation section includes a lower convex curve section and a transition section that are sequentially arranged from bottom to top along the inclination direction of the air distribution plate.

Optionally, the plurality of first ventilation holes are evenly distributed on the upper convex curve section.

Optionally, the cross-sectional area of each ventilation section of the lower ventilation chamber is not smaller than the ventilation area of the primary air inlet.

Optionally, the burner further comprises a hot air ignition mechanism disposed within the lower ventilation chamber, the hot air ignition mechanism configured to heat primary air entering the lower ventilation chamber.

Optionally, a cooling windband is provided along a circumferential direction of the upper combustion chamber.

Optionally, a cooling water jacket is provided along a circumferential direction of the upper combustion chamber.

The utility model also provides a stove, include as above the combustor.

Optionally, the burners are provided in plurality, the furnace further comprises a raw material distribution mechanism, an inlet of the raw material distribution mechanism is communicated with an external fuel supply mechanism, and an outlet of the raw material distribution mechanism is simultaneously communicated with the fuel supply ports of the burners; and/or

The inlet of the raw material distribution mechanism is communicated with an external air supply mechanism, and the outlet of the raw material distribution mechanism is simultaneously communicated with the primary air inlets of the plurality of burners.

The utility model has the advantages that:

the utility model provides a combustor and stove. The burner includes a housing and an air distribution plate by which an inner space of the burner housing can be partitioned and an upper combustion chamber and a lower ventilation chamber are formed. Because the air distribution plate is provided with the isolation section and the upward convex curve section, and only the upward convex curve section is provided with the first vent hole, partial communication between the upper combustion chamber and the lower ventilation chamber can be realized, and an almost oxygen-free pyrolysis area, an oxygen-poor red carbon area and an oxygen-rich combustion area are sequentially formed in the combustion chamber along the direction from the fuel supply port to the ash residue discharge port. At this time, the reducing gas such as CO generated in the pyrolysis zone can enter the red carbon zone and be mixed with NO generated by combustion_xReduction reaction occurs to effectively eliminate NO_x(ii) a Carbon black particles and the like generated in the pyrolysis zone can be adsorbed by the red carbon zone, so that the smoke and dust can be collected. Then, do notThe reacted reducing gas such as CO and the carbon black particles which are not collected pass through the combustion zone after flowing out of the red carbon zone, and aerobic combustion is carried out in the combustion zone. Because the primary air that gets into in the lower part ventilation chamber can be through a plurality of first air vents that the epirelief curve section goes up dispersion and sets up get into the combustion area with a plurality of angles, so the primary air can carry out the vortex with reducing gas such as CO and carbon black granule etc. with a plurality of angles and mix in the upper portion combustion chamber, guarantees the sufficiency of burning to effectively eliminate reducing gas such as CO, and realize smokeless burning. In the whole process, because the air distribution plate is arranged upwards in an inclined mode, the propelling speed of fuel in the upper combustion chamber can be effectively reduced, the situation that the fuel is not fully combusted and is gushed together with ash slag is avoided, the orderliness and smoothness of ash slag discharge can be guaranteed, and the quantity of residual carbon in the ash slag is effectively reduced. Meanwhile, the process is not restricted by the ash content of the fuel and the type of the fuel, so that the combustion requirements of various fuels can be met.

Drawings

Fig. 1 is a schematic overall sectional structural view of a burner according to an embodiment of the present invention;

fig. 2 is a combustion schematic diagram of a burner according to an embodiment of the present invention;

fig. 3 is a schematic size diagram of a wind distribution plate in a burner according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of an air distribution plate in a burner according to an embodiment of the present invention;

fig. 5 is a schematic left-side view of an overall burner according to an embodiment of the present invention;

fig. 6 is an overall sectional structural schematic view of a burner according to a second embodiment of the present invention;

fig. 7 is an overall sectional structural schematic view of a burner provided in the third embodiment of the present invention;

fig. 8 is an overall left-side structural schematic view of a burner according to a third embodiment of the present invention;

fig. 9 is an overall sectional structural schematic view of a burner according to a fourth embodiment of the present invention;

fig. 10 is a schematic overall top view of a stove according to a fifth embodiment of the present invention.

In the figure:

100. an upper combustion chamber; 101. a fuel supply port; 102. an ash discharge port; 200. a lower ventilation chamber; 201. a primary air inlet;

1. a wind distribution plate; 11. a first horizontal segment; 12. an isolation section; 121. a downward convex curve segment; 122. a transition section; 13. a convex curved section; 14. a second horizontal segment; 2. a top cover plate; 3. a side dam; 4. a bottom cover plate; 41. an access hole; 42. an access panel; 5. a flange connecting plate; 51. a first opening; 52. a second opening; 53. bolt holes; 54. a third opening; 6. cooling the air jacket; 61. a cooling air inlet; 62. a cooling air outlet; 7. a cooling water jacket; 71. a cooling water inlet and outlet; 8. a raw material dispensing mechanism.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

The present embodiment provides a burner. As shown in fig. 1, the burner includes a casing and a wind distribution plate 1. The air distribution plate 1 is disposed in the housing obliquely upward and partitions the interior space of the housing into an upper combustion chamber 100 and a lower ventilation chamber 200. Specifically, the air distribution plate 1 comprises an isolation section 12 and an upper convex curve section 13 which are sequentially connected from bottom to top, and a plurality of first vent holes are dispersedly arranged on the upper convex curve section 13. The upper combustion chamber 100 has a lower end and an upper end in the direction of inclination of the grid 1. A fuel supply port 101 and an ash discharge port 102 are provided at the lower end and the upper end of the upper combustion chamber 100, respectively. Fuel may enter the upper combustion chamber 100 through the fuel supply port 101 for combustion and be discharged through the ash discharge port 102 after being burned off as ash. A primary air inlet 201 is provided at one end of the lower plenum 200. The primary air can enter the lower ventilation chamber 200 through the primary air inlet 201 and then enter the upper combustion chamber 100 through the first vent holes on the convex curved section 13 in the air distribution plate 1.

As shown in fig. 2, since the plurality of first ventilation holes are provided only in the upper convex curved section 13 in the air distribution plate 1, the upper combustion chamber 100 and the lower ventilation chamber 200 can communicate only through the upper convex curved section 13. Thus, different locations within the upper combustion chamber 100 have different air supply conditions. Specifically, the supply of the primary wind is more sufficient the closer to the upward convexly curved section 13 in the upper combustion chamber 100. When fuel is burned in the upper combustion chamber 100, a pyrolysis zone a almost free of oxygen, a red char (mainly coke) zone B lean in oxygen, and a combustion zone C rich in oxygen can be formed in the upper combustion chamber 100 in the direction from the fuel supply port 101 to the ash discharge port 102. Wherein, the pyrolysis zone A is positioned above the isolation section 12, the red carbon zone B is positioned above the transition area between the isolation section 12 and the upward convex curve section 13, and the combustion zone C is positioned above the upward convex curve section 13.

At this time, the fuel may be subjected to dry distillation pyrolysis in the pyrolysis zone a. The reducing gas such as CO generated in the pyrolysis zone A can enter the red carbon zone B and react with NO generated by combustion in high-temperature oxygen-deficient atmosphere_xReduction reaction is carried out to react NO_xReduction to N₂Thereby effectively eliminating NO_x. Meanwhile, as the fuel in the red carbon zone B can form a developed porous structure through pyrolysis, a large amount of smoke (mainly comprising carbon black particles and the like) generated in the pyrolysis zone A can be effectively adsorbed by the red carbon zone B, and the smoke is collected.

After that, the unreacted reducing gas such as CO and the carbon black particles not trapped pass through the combustion zone C after flowing out of the red carbon zone B, and are combusted in the combustion zone C. At this time, since the primary air in the lower ventilation chamber 200 can enter the combustion zone C at a plurality of angles through the upwardly convex curved section 13, the primary air can be mixed with the reducing gases such as CO and the carbon black particles in the upper combustion chamber 100 in a turbulent manner at a plurality of angles such as vertical, parallel and tangential directions, so as to ensure the sufficiency of combustion, thereby effectively eliminating the reducing gases such as CO and realizing smokeless combustion.

In addition, in the whole process of supplying fuel to the burner, burning the fuel out and discharging the fuel from the burner, because the air distribution plate 1 is arranged obliquely upwards, the propelling speed of the fuel can be effectively slowed down after the fuel enters the upper combustion chamber 100, the situation that the fuel is not fully combusted in the upper combustion chamber 100 and is mixed with ash slag and gushes out together is avoided, the orderliness and the smoothness of ash slag discharge can be ensured, and the residual carbon amount in the ash slag is effectively reduced. Meanwhile, the process is not restricted by the ash content of the fuel and the type of the fuel, so that the combustion requirements of various fuels can be met.

On the whole, the combustor can effectively reduce the emission of various pollutant gases through a shell and an air distribution plate 1, meets the combustion requirements of various fuels, and has the advantages of simple structure, low cost, good effect and great environmental benefit and economic benefit.

In this embodiment, the cross-sectional area of each ventilation cross-section in the lower ventilation chamber 200 is not less than the ventilation area of the primary air inlet 201, so as to ensure that the primary air in the lower ventilation chamber 200 flows more stably, and the primary air airflow flowing to the air distribution plate 1 is distributed more uniformly.

Optionally, the plurality of first ventilation apertures are evenly distributed on the upwardly convex curved section 13. When the primary air flows through the upper convex curve section 13, the primary air can uniformly flow out from each position of the upper convex curve section 13 through the arrangement, so that the primary air in the combustion area C is distributed more uniformly, and the stability of combustion is favorably ensured.

Alternatively, the cross-sectional area of the upper combustion chamber 100 located above the barrier section 12 in the direction in which the grid 1 is inclined upward increases first and then decreases. According to the arrangement, the pyrolysis zone A can be in a structural shape of 'big middle and small two ends'. This structure mainly has following advantage: on one hand, the transfer resistance of smoke and heat to the fuel supply port 101 can be effectively increased, smoke is prevented from flowing backwards, the moving resistance of the insufficiently pyrolyzed fuel to the red carbon area B can be effectively increased, and the stability of the red carbon area B is favorably maintained; on the other hand, the flow velocity of the pyrolysis gas can be effectively increased, and the penetrating capability of the pyrolysis gas to the red carbon zone B is improved.

Alternatively, as shown in fig. 1, the isolation section 12 includes a lower convex curve section 121 and a transition section 122 which are sequentially arranged from bottom to top along the inclination direction of the grid plate 1. The lower convex curved section 121, the transition section 122 and the upper convex curved section 13 cooperate to form an S-shaped air distribution plate, which facilitates the fuel to pass through the upper combustion chamber 100 more smoothly. Specifically, the lower convex curved line section 121 and the upper convex curved line section 13 may be one arc section or may be composed of a plurality of arc sections. The transition section 122 may be a straight section or may be a curved section consisting of one or more arc sections. In this embodiment, the S-shaped air distribution plate is an integrated plate-shaped structure. Of course, in other embodiments, the lower convex curved section 121, the transition section 122, the upper convex curved section 13, etc. may be provided as separate plates, and then the plates may be spliced.

Optionally, a plurality of second ventilation holes are arranged on a part of the transition section 122 close to the upward convex curved section 13 to increase the ventilation area between the upper combustion chamber 100 and the lower ventilation chamber 200, so as to further adjust the air supply condition of the upper combustion chamber 100 and meet the combustion requirements of different conditions. The lower convex curved section 121 is not provided with vent holes. In this embodiment, the sum of the cross-sectional areas of all the vent holes (including the first vent hole and the second vent hole) on the air distribution plate 1 is less than or equal to the cross-sectional area of the primary air inlet 201. The aperture of the vent hole can be phi 2 mm-phi 30 mm.

Alternatively, as shown in fig. 3, a first horizontal section 11 and a second horizontal section 14 may be further extended from one side of the lower convex curved section 121 and one side of the upper convex curved section 13, respectively, to make the propulsion of the fuel in the upper combustion chamber 100 smoother. Further, no vent hole is provided on the first horizontal section 11, and a plurality of vent holes may be arranged on the second horizontal section 14.

Further, as for the size of each section of the air distribution plate 1, as shown in fig. 3, the horizontal length L1 of the first horizontal section 11, the horizontal length L2 of the lower convex curved section 121, the horizontal length L3 of the transition section 122, the horizontal length L4 of the upper convex curved section 13, and the horizontal length L5 of the second horizontal section 14 can be adjusted according to actual conditions. Wherein, L1, L3 and L5 can be all 0. On the basis, the volume proportion among the pyrolysis zone A, the red carbon zone B and the combustion zone C can be adjusted by combining the adjustment of the length and the radian of each section of the air distribution plate 1, so that NO can be further adjusted_xThe reaction space of the reduction reaction and the like and the contact area between reactants are large and small, so that the reaction is more thorough. Of course, the control of the fuel propulsion speed and the propulsion direction can also be realized by adjusting the radian or the angle of each section of the air distribution plate 1.

In terms of the overall size of the air distribution plate 1, as shown in fig. 4, the horizontal width L6 of the lowermost end of the air distribution plate 1 should be not less than the width of the fuel supply port 101. It can also be seen that the projection shape of the air distribution plate 1 relative to the horizontal plane in this embodiment is a sector, and the included angle θ of the sector can be any angle between 0 ° and 360 °. In actual use, the included angle theta can be determined according to L6 and other numerical values.

Optionally, the burner further includes a hot air ignition mechanism provided in the lower ventilation chamber 200 for heating the primary air entering the lower ventilation chamber 200 to form high temperature air. The high-temperature wind can enter the upper combustion chamber 100 through the air vent holes in the air distribution plate 1 and come into contact with the fuel in the upper combustion chamber 100, thereby igniting the fuel.

In the present embodiment, as for the specific structure, as shown in fig. 1 and 5, the casing of the burner includes a top cover plate 2, two side baffle plates 3, a bottom cover plate 4, and a flange connecting plate 5. Wherein, the upper part of the air distribution plate 1, the top cover plate 2, the two side baffles 3 and the flange connecting plate 5 are enclosed to form an upper combustion chamber 100 with two open ends. The air distribution plate 1, the bottom cover plate 4, the lower parts of the two side baffles 3 and the flange connecting plate 5 enclose a lower ventilation chamber 200 with only one open end. The flange plate 5 is further provided with a first opening 51 corresponding to the fuel supply port 101 and a second opening 52 corresponding to the primary air inlet 201. Further, bolt holes 53 are formed in the flange connecting plate 5, so that the burner can be conveniently installed in cooperation with an external fuel supply mechanism (such as a screw feeder or a piston feeder), an external air supply mechanism (such as a blower) and the like.

Alternatively, the top cover plate 2 may be an arc-shaped plate structure or a flat plate structure. The top cover plate 2, the side baffle 3 and other plates forming the combustor shell can be connected in a welding mode or in a detachable mode. Taking the flange connecting plate 5 as an example, the flange connecting plate can be detachably connected with the side baffle 3 through bolts or clamping pieces.

Optionally, the bottom cover plate 4 is further provided with an access opening 41. The main functions of the access opening 41 are as follows: (1) an operator can install a hot air ignition mechanism in the lower ventilation chamber 200 through the access opening 41; (2) since a certain amount of ash enters the lower ventilation chamber 200 from the upper combustion chamber 100 through the ventilation holes of the grid 1, the operator can open the access opening 41 to clean the ash in the lower ventilation chamber 200. Further, an access opening cover plate 42 is covered on the access opening 41 so as to close the access opening 41 during the daily use of the burner.

Alternatively, since the upper combustion chamber 100 needs to endure a high temperature of 900 ℃ or more for a long time, the grid plate 1, the top cover plate 2, the side dams 3, and the flange connecting plates 5 are made of cast iron or a high temperature alloy plate material to ensure the service life of the combustor.

The embodiment also provides a stove which comprises the burner. The shell of the burner is internally provided with an air distribution plate 1, the interior of the shell can be divided into an upper combustion chamber 100 and a lower ventilation chamber 200 through the air distribution plate 1, and a pyrolysis zone A, a red carbon zone B and a combustion zone C are formed in the upper combustion chamber 100. After the formation of the partition, in the red carbon zone B, reducing gas such as CO and NO are generated_xBy reaction of (A) with (B), effective elimination of NO_xAnd the effective trapping of the smoke dust can be realized through the adsorption of the porous structure. And then, unreacted reducing gases such as CO and the like and carbon black particles and the like which are not trapped can be mixed with primary air in a turbulent way in the combustion zone C and are sufficiently combusted, so that the reducing gases such as CO and the like are effectively eliminated, and smokeless combustion is realized. In the whole process, because the air distribution plate 1 is obliquely and upwards arranged, the propelling speed of fuel in the upper combustion chamber 100 can be effectively reduced, the condition that the fuel is not fully combusted and is gushed together with ash slag is avoided, the orderliness and the smoothness of ash slag discharge can be ensured, and the smoothness of slag removal is ensured by effectively reducing the carbon residue in the ash slag. Meanwhile, the process is not influenced by the ash content of the fuel and the type of the fuel, and the combustion requirements of various fuels can be met.

In particular, the furnace can be a coupling assembly type normal pressure hot water boiler. Taking the bituminous coal with 1.4% of nitrogen content for burning of the furnace as an example, NO discharged after burning by the burner provided by the embodiment_xWill be less than 180mg/Nm³Compared with the prior art, the nitrogen is reduced by more than 60 percent.

Example two

The embodiment provides a burner and a stove. The structure of the burner is the same as that of the burner provided by the first embodiment, and the difference is only that: the shape of the bottom cover plate 4 is different.

Specifically, as shown in fig. 6, the bottom cover plate 4 may be provided with a plurality of folded edges to adjust the structure of the lower plenum 200 to facilitate the installation of the burner in the oven. Further, an access opening 41 may be provided at a side portion of the bottom cover plate 4 to facilitate an operator to get in and out of the access opening 41. It should be noted that the shape of the bottom cover 4 is adjusted so that the ventilation area at any position in the lower ventilation chamber 200 is not smaller than the ventilation area of the primary air inlet 201.

EXAMPLE III

The embodiment provides a burner and a stove. The structure of the burner is the same as that of the burner provided by the first embodiment, and the difference is only that: a cooling windband 6 is provided along the circumferential direction of the upper combustion chamber 100.

Specifically, as shown in fig. 7, the cooling wind inlet 61 and the cooling wind outlet 62 are provided on the cooling wind jacket 6, and the cooling wind outlet 62 communicates with the ash discharge port 102 of the upper combustion chamber 100. After the cooling air is introduced into the cooling air jacket 6, the upper combustion chamber 100 can be cooled, and the temperature of the combustion area C is reduced, so that the sulfur fixation efficiency can be effectively improved when the molded coal containing the sulfur fixation agent is combusted. Meanwhile, the cooling air outlet 62 is communicated with the ash residue outlet 102 of the upper combustion chamber 100, so that the cooling air flowing out of the cooling air outlet 62 can contact with the high-temperature flue gas in the combustion area C, and can be used as secondary air to disturb and afterburning the high-temperature flue gas, thereby further reducing the concentration of gases such as CO and the like.

In addition to the effect on the combustion process, the cooling air cools the peripheral chamber walls (i.e., the top cover plate 2 and the side dams 3) of the upper combustion chamber 100, thereby extending the useful life of the top cover plate 2 and the side dams 3.

In this embodiment, the cooling air inlet 61 and the primary air inlet 201 are disposed on the same side of the burner housing so as to be connected to an external air supply mechanism. Further, as shown in fig. 8, the flange connection plate 5 is provided with a third opening 54 corresponding to the cooling air inlet 61.

Example four

The embodiment provides a burner and a stove. The structure of the burner is the same as that of the burner provided by the first embodiment, and the difference is only that: a cooling water jacket 7 is provided along the circumferential direction of the upper combustion chamber 100.

According to the arrangement, cooling water can be introduced into the cooling water jacket 7 to cool the upper combustion chamber 100, so that the temperature of the combustion zone C is reduced, and the sulfur fixation efficiency can be effectively improved when the molded coal containing the sulfur fixation agent is combusted.

Further, as shown in fig. 9, a cooling water inlet/outlet 71 is provided at one end of the cooling water jacket 7. Meanwhile, the flange connection plate 5 is provided with openings corresponding to the cooling water inlets and outlets 71.

EXAMPLE five

As shown in fig. 10, the present embodiment provides a oven. The stove is substantially the same as the stove provided by the first embodiment, and the differences are only that: the burner is provided with a plurality of burners, and the raw material distribution mechanism 8 is also provided in the burner.

Specifically, the inlet and outlet of the raw material distribution mechanism 8 can communicate with the external fuel supply mechanism and the fuel supply ports 101 of the plurality of burners, respectively, to supply fuel to the plurality of burners at the same time. The inlet and outlet of the raw material distribution mechanism 8 can also be communicated with the external air supply mechanism and the primary air inlets 201 of the plurality of burners, respectively, to supply primary air to the plurality of burners at the same time. In this embodiment, the raw material distribution mechanism 8 is simultaneously communicated with the external fuel supply mechanism and the external air supply mechanism, and can simultaneously supply fuel and primary air to a plurality of burners in the burner.

After a plurality of burners are arranged, the heat supply capacity of the stove can be greatly enhanced. Of course, the number of burners can be adjusted according to actual needs. Meanwhile, by arranging the raw material distribution mechanism 8, a proper amount of fuel and a proper flow of primary air can be distributed to each combustor according to the number, the size and the like of the combustors, so that all the combustors in the stove are ensured to keep the same combustion state.

Alternatively, the raw material distribution mechanism 8 may be provided as a box structure in which a plurality of material passing chambers and ventilation chambers are provided. Taking the arrangement of the through-flow cavities as an example, the inlets of the multiple through-flow cavities may be arranged to communicate with the same external fuel supply mechanism, and the outlets of the multiple through-flow cavities may communicate with the fuel supply ports 101 of the multiple burners in a one-to-one correspondence, so that the amount of fuel passing through the through-flow cavities may be controlled by changing the cross-sectional area of each through-flow cavity. Of course, a plurality of external fuel supply mechanisms can be arranged to enable the inlets of the plurality of material passing cavities to be communicated with the plurality of external fuel supply mechanisms in a one-to-one correspondence manner, so that the fuel supply quantity of each combustor can be adjusted more finely. The arrangement of the ventilation cavity is similar to that of the through-material cavity, and the description is omitted.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A burner, comprising:

a housing;

the air distribution plate (1) is obliquely and upwards arranged in the shell and divides the inner space of the shell into an upper combustion chamber (100) and a lower ventilation chamber (200), the air distribution plate (1) comprises an isolation section (12) and an upper convex curve section (13) which are sequentially connected from bottom to top, and a plurality of first vent holes are dispersedly arranged on the upper convex curve section (13);

along the inclined direction of the air distribution plate (1), the upper combustion chamber (100) is provided with a low end and a high end, the low end is provided with a fuel supply port (101), and the high end is provided with a clinker discharge port (102);

one end of the lower ventilation chamber (200) is provided with a primary air inlet (201).

2. A burner according to claim 1, characterized in that the cross-sectional area of the upper combustion chamber (100) above the partition section (12) in the direction in which the air distribution plate (1) is inclined upwards increases first and then decreases.

3. The burner according to claim 1, characterized in that the insulation section (12) comprises a lower convex curve section (121) and a transition section (122) which are arranged in sequence from bottom to top along the inclination direction of the grid plate (1).

4. Burner according to claim 1, wherein a plurality of said first ventilation holes are evenly distributed on said upwardly convex curved section (13).

5. A burner according to claim 1, characterized in that the cross-sectional area of each ventilation cross-section of the lower ventilation chamber (200) is not smaller than the ventilation area of the primary air inlet (201).

6. The burner of claim 1, further comprising a hot air ignition mechanism disposed within the lower plenum (200), the hot air ignition mechanism configured to heat primary air entering the lower plenum (200).

7. A burner according to claim 1, characterized in that a cooling windband (6) is provided in the circumferential direction of the upper combustion chamber (100).

8. A burner according to claim 1, wherein a cooling water jacket (7) is provided along the circumferential direction of the upper combustion chamber (100).

9. A stove comprising a burner as claimed in any one of claims 1 to 8.

10. The oven according to claim 9, wherein said burners are provided in plurality, said oven further comprising a raw material distribution mechanism (8), an inlet of said raw material distribution mechanism (8) is communicated with an external fuel supply mechanism, an outlet of said raw material distribution mechanism (8) is simultaneously communicated with said fuel supply ports (101) of a plurality of said burners; and/or

The inlet of the raw material distribution mechanism (8) is communicated with an external air supply mechanism, and the outlet of the raw material distribution mechanism (8) is simultaneously communicated with the primary air inlets (201) of the plurality of burners.