阅读说明：本技术 一种三相共喷粉煤烧嘴 (Three-phase co-spraying powder coal burner ) 是由 答欢强 肖哲 原栋 余春 李晓鹏 朱晓龙 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种三相共喷粉煤烧嘴,包括依次连接的烧嘴头部、转接件和烧嘴身部；烧嘴身部包括由多层套筒结构依次套设形成的多级通道,该多级通道从内到外依次为粉煤通道、氧气通道、水通道和冷却水夹套；烧嘴头部包括从内到外依次套设的粉煤出口通道、氧气出口通道和设有雾化器的水出口通道；转接件包括圆形的转接件主体、设在转接件主体中心的粉煤贯通孔、多个氧气贯通孔、多个水贯通孔、多个冷却水进水贯通孔以及多个冷却水出水贯通孔。本发明将氧蒸汽混合进料改为氧气、水单独进料,从而降低了氧气的供应温度,可使相关的氧气供应路的材料等级大幅降低,节约装置建设成本。(The invention discloses a three-phase co-injection pulverized coal burner which comprises a burner head, an adapter and a burner body which are sequentially connected; the burner body comprises a multi-stage channel which is formed by sequentially sleeving a plurality of layers of sleeve structures, and the multi-stage channel sequentially comprises a pulverized coal channel, an oxygen channel, a water channel and a cooling water jacket from inside to outside; the burner head comprises a pulverized coal outlet channel, an oxygen outlet channel and a water outlet channel provided with an atomizer, which are sequentially sleeved from inside to outside; the adaptor comprises a circular adaptor body, a pulverized coal through hole, a plurality of oxygen through holes, a plurality of water through holes, a plurality of cooling water inlet through holes and a plurality of cooling water outlet through holes, wherein the pulverized coal through hole is formed in the center of the adaptor body. According to the invention, the mixed feeding of oxygen and steam is changed into the independent feeding of oxygen and water, so that the supply temperature of oxygen is reduced, the material grade of a related oxygen supply path can be greatly reduced, and the construction cost of the device is saved.)

1. The three-phase common pulverized coal spraying burner is characterized by comprising a burner head (1), an adapter (2) and a burner body (3) which are sequentially connected;

the burner body part (3) comprises a multi-stage channel formed by sequentially sleeving a plurality of layers of sleeve structures, and the multi-stage channel sequentially comprises a pulverized coal channel (31), an oxygen channel (32), a water channel (33) and a cooling water jacket (34) from inside to outside; the cooling water jacket (34) comprises a cooling water inlet channel (341) and a cooling water outlet channel (342) which are sleeved from inside to outside;

the burner head (1) comprises a pulverized coal outlet channel (11), an oxygen outlet channel (12) and a water outlet channel (13) provided with an atomizer (4), which are sequentially sleeved from inside to outside; a cooling water inlet channel end part ring groove (141) and a cooling water outlet channel end part ring groove (142) which are communicated with each other are arranged on the outer ring of the water outlet channel (13);

the adaptor (2) comprises a circular adaptor main body (20), a pulverized coal through hole (21) which is arranged at the center of the adaptor main body (20) and can be respectively communicated with a pulverized coal channel (31) and a pulverized coal outlet channel (11), and a plurality of oxygen through holes (22) which are distributed around the pulverized coal through hole (21) and can be communicated with an oxygen channel (32) and an oxygen outlet channel (12), a plurality of water through holes (23) which are arranged around the oxygen through hole (22) and can be communicated with the water channel (33) and the water outlet channel (13), a plurality of cooling water inlet through holes (24) which are arranged around the water through holes (23) and can be communicated with the cooling water inlet channel (341) and the cooling water inlet channel end part annular groove (141), and a plurality of cooling water outlet through holes (25) which are arranged around the cooling water inlet through holes (24) and can be communicated with the cooling water outlet channel (342) and the cooling water outlet channel end part annular groove (142).

2. The three-phase co-injection pulverized coal burner as claimed in claim 1, wherein the pulverized coal passage (31), the oxygen passage (32), the water passage (33) and the cooling water jacket (34) are all coaxially arranged;

the pulverized coal outlet channel (11), the oxygen outlet channel (12), the water outlet channel (13), the cooling water inlet channel end part annular groove (141) and the cooling water outlet channel end part annular groove (142) are coaxially arranged;

the pulverized coal through holes (21) are positioned in the center of the adaptor body (20), and the plurality of oxygen through holes (22), the plurality of water through holes (23), the plurality of cooling water inlet through holes (24) and the plurality of cooling water outlet through holes (25) are respectively positioned on a circle with the center of the adaptor body (20) as the center of a circle; the radii of circles in which the oxygen through hole (22), the water through hole (23), the cooling water inlet through hole (24), and the cooling water outlet through hole (25) are located are increased in order.

3. The three-phase co-injection pulverized coal burner as claimed in claim 2, wherein the two ends of the pulverized coal through hole (21) are provided with first annular protrusions (211) which are coaxial with the pulverized coal through hole (21) and have the same radius, and the first annular protrusions (211) on the two sides of the adapter can be respectively welded with the end part of the side wall of the channel forming the pulverized coal channel (31) and the end part of the side wall of the channel forming the pulverized coal outlet channel (11).

4. The three-phase co-injection pulverized coal burner as claimed in claim 2, wherein a second annular bulge (221) centered at the center of the adaptor (20) is provided between the oxygen through hole (22) and the water through hole (23), and the second annular bulges (221) on both sides of the adaptor can be welded to the end of the channel side wall forming the oxygen channel (32) and the end of the channel side wall forming the oxygen outlet channel (12), respectively.

5. The three-phase co-injection pulverized coal burner as claimed in claim 2, wherein a third annular protrusion (231) centering on the center of the adaptor (20) is provided between the water through hole (23) and the cooling water inlet through hole (24), and the third annular protrusions (231) on both sides of the adaptor (20) can be welded to the end of the channel side wall forming the water channel (33) and the end of the channel side wall forming the water outlet channel (13), respectively.

6. The three-phase co-injection pulverized coal burner as claimed in claim 2, wherein a fourth annular protrusion (241) with the center of the adaptor (20) as the center of a circle is arranged between the cooling water inlet through hole (24) and the cooling water outlet through hole (25), and the fourth annular protrusions (241) at both sides of the adaptor (20) can be respectively welded with the end part of the channel side wall forming the cooling water inlet channel (341) and the end part of the ring groove side wall forming the ring groove (141) at the end part of the cooling water inlet channel;

and a fifth annular bulge (251) taking the center of the adaptor (20) as the center of a circle is arranged on the outer ring of the cooling water outlet through hole (25), and the fifth annular bulges (251) on the two sides of the adaptor (20) can be respectively welded with the end part of the channel side wall forming the cooling water outlet channel (342) and the end part of the ring groove side wall forming the ring groove (142) of the end part of the cooling water outlet channel.

7. The three-phase co-injection pulverized coal burner as claimed in claim 2, wherein a pulverized coal inlet flange (311) is provided at an inlet of the pulverized coal passageway (31); the oxygen channel (32) is provided with an oxygen inlet (321) and an oxygen inlet flange (322) arranged on the oxygen inlet (321); the water channel (33) is provided with a water inlet (331) and a water inlet flange (332) arranged on the water inlet (331); a cooling water inlet (3411) and a cooling water inlet flange (3412) arranged on the cooling water inlet (3411) are arranged on the cooling water inlet channel (341); the cooling water outlet channel (342) is provided with a cooling water outlet (3421) and a cooling water outlet flange (3422) arranged on the cooling water outlet (3421); and the outer wall of the cold water outlet channel (342) is provided with an installation flange (35) coaxial with the burner body part (3).

8. The three-phase co-injection pulverized coal burner as claimed in claim 7, wherein the central axes of the oxygen inlet flange (322), the water inlet flange (332), the cooling water inlet flange (3412) and the cooling water outlet flange (3422) are all perpendicular to the central axis of the burner body (3).

9. The three-phase co-injection pulverized coal burner nozzle as claimed in claim 7, wherein the structure of the atomizer (4) arranged in the water outlet channel (13) is a fin structure uniformly distributed along the circumference, and the thickness of the fins is 1-3 mm; the number of the fins is 20-40, and each fin and the axial direction form an included angle of 10-40 degrees, so that water can be fully swirled in the channel and then is sprayed out of the burner.

Technical Field

The invention belongs to the technical field of coal gasification, and relates to a pulverized coal burner, in particular to a three-phase co-injection pulverized coal burner.

Background

In the field of coal chemical industry, particularly in the field of dry coal powder pressurized gasification, a pulverized coal process burner is key equipment of the whole gasification device, and the pulverized coal process burner is mainly used for introducing a mixture of pulverized coal carried by gas (nitrogen or carbon dioxide), oxygen and superheated steam into a gasification furnace at a certain temperature and pressure for reaction. The supply of oxygen and superheated steam requires that the temperature of the feed to the pipeline be raised to over 180 ℃, and the steam is guaranteed to be superheated steam, so as to avoid dew point corrosion and damage to the supply pipeline and related equipment. However, as the temperature rises, the design level of related equipment and pipelines is increased by times, the pressure level of the equipment and the requirement of used materials are greatly increased, and the cost of a single oxygen-steam mixed supply pipeline is at least 200 ten thousand yuan according to conservative estimation.

Disclosure of Invention

Aiming at the defects and shortcomings in the prior art, the invention provides a three-phase common pulverized coal injection burner which overcomes the defects of complex structure, high cost and the like of the conventional pulverized coal burner.

In order to achieve the purpose, the invention adopts the following technical scheme:

a three-phase common pulverized coal injection nozzle comprises a nozzle head, an adapter and a nozzle body which are connected in sequence;

the burner body comprises a multi-stage channel formed by sequentially sleeving a plurality of layers of sleeve structures, and the multi-stage channel sequentially comprises a pulverized coal channel, an oxygen channel, a water channel and a cooling water jacket from inside to outside; the cooling water jacket comprises a cooling water inlet channel and a cooling water outlet channel which are sleeved from inside to outside;

the burner head comprises a pulverized coal outlet channel, an oxygen outlet channel and a water outlet channel provided with an atomizer, which are sequentially sleeved from inside to outside; the outer ring of the water outlet channel is provided with a cooling water inlet channel end part annular groove and a cooling water outlet channel end part annular groove which are communicated with each other;

the adaptor includes the circular shape adaptor main part, establish at adaptor main part center can communicate respectively with fine coal passageway and fine coal exit channel's fine coal perforating hole, can communicate a plurality of oxygen perforating holes of oxygen passageway and oxygen exit channel around fine coal perforating hole lays, can communicate a plurality of water perforating holes of water passageway and water exit channel around what the oxygen perforating hole laid, can communicate a plurality of cooling water intake perforating holes of cooling water inhalant canal and cooling water inhalant canal tip annular around what the water perforating hole laid and can communicate a plurality of cooling water exhalant canals of cooling water exhalant canal and cooling water exhalant canal tip annular around what the cooling water inhalant canal laid.

The invention also comprises the following technical characteristics:

specifically, the pulverized coal channel, the oxygen channel, the water channel and the cooling water jacket are all coaxially arranged;

the pulverized coal outlet channel, the oxygen outlet channel, the water outlet channel, the cooling water inlet channel end annular groove and the cooling water outlet channel end annular groove are all coaxially arranged;

the pulverized coal through holes are positioned in the center of the adaptor main body, and the plurality of oxygen through holes, the plurality of water through holes, the plurality of cooling water inlet through holes and the plurality of cooling water outlet through holes are respectively positioned on a circle with the center of the adaptor main body as the center of a circle; the radii of circles where the oxygen through hole, the water through hole, the cooling water inlet through hole and the cooling water outlet through hole are located are increased in sequence.

Specifically, the both ends of fine coal perforating hole are equipped with the coaxial first annular arch with the radius of fine coal perforating hole, and the first annular arch of adaptor both sides can be respectively with the passageway lateral wall tip that forms the fine coal passageway and the passageway lateral wall tip welding that forms fine coal exit way, ensures that the passageway that fine coal passageway, fine coal perforating hole and fine coal exit way formed is for the sealed passageway that is used for passing through fine coal.

Specifically, a second annular bulge with the center of the adaptor as the center is arranged between the oxygen through hole and the water through hole, and the second annular bulges on the two sides of the adaptor can be respectively welded with the end part of the side wall of the channel forming the oxygen channel and the end part of the side wall of the channel forming the oxygen outlet channel, so that the channels formed by the oxygen channel, the oxygen through hole and the oxygen outlet channel are sealed channels for passing oxygen.

Specifically, a third annular bulge which takes the center of the adaptor as the center of a circle is arranged between the water through hole and the cooling water inlet through hole, the third annular bulges on the two sides of the adaptor can be respectively welded with the end part of the side wall of the channel forming the water channel and the end part of the side wall of the channel forming the water outlet channel, and the channel formed by the water channel, the water through hole and the water outlet channel is ensured to be a sealed channel for passing water.

Specifically, a fourth annular bulge which takes the center of the adaptor as the center of a circle is arranged between the cooling water inlet through hole and the cooling water outlet through hole, the fourth annular bulges at two sides of the adaptor can be respectively welded with the end part of the side wall of the channel forming the cooling water inlet channel and the end part of the side wall of the ring groove forming the ring groove at the end part of the cooling water inlet channel, and a channel formed by the cooling water inlet channel, the cooling water inlet through hole and the ring groove at the end part of the cooling water inlet channel is ensured to be a sealed channel for passing cooling water;

the outer ring of the cooling water outlet through hole is provided with a fifth annular bulge with the center of the adaptor as the center of a circle, the fifth annular bulges on the two sides of the adaptor can be respectively welded with the end part of the channel side wall forming the cooling water outlet channel and the end part of the ring groove side wall forming the ring groove of the end part of the cooling water outlet channel, and a channel formed by the cooling water outlet channel, the cooling water outlet through hole and the ring groove of the end part of the cooling water outlet channel is a sealed channel for passing through cooling water.

Specifically, a pulverized coal inlet flange is arranged at an inlet of the pulverized coal channel; the oxygen channel is provided with an oxygen inlet and an oxygen inlet flange arranged on the oxygen inlet; the water channel is provided with a water inlet and a water inlet flange arranged on the water inlet; the cooling water inlet channel is provided with a cooling water inlet and a cooling water inlet flange arranged on the cooling water inlet; the cooling water outlet channel is provided with a cooling water outlet and a cooling water outlet flange arranged on the cooling water outlet; and the outer wall of the cold water outlet channel is provided with an installation flange coaxial with the burner body.

Specifically, the central axes of the oxygen inlet flange, the water inlet flange, the cooling water inlet flange and the cooling water outlet flange are all perpendicular to the central axis of the burner body.

Specifically, the atomizer arranged in the water outlet channel is of a fin structure uniformly distributed along the circumference, and the thickness of the fins is 1-3 mm; the number of the fins is 20-40, and each fin and the axial direction form an included angle of 10-40 degrees, so that water can be fully swirled in the channel and then is sprayed out of the burner.

Compared with the prior art, the invention has the beneficial technical effects that:

the water channel is introduced into the burner to replace steam in the oxygen-steam mixed gas, and oxygen-steam mixed feeding is changed into oxygen and moisture independent feeding through the change, so that the supply temperature of oxygen is reduced, the temperature is increased from 180 ℃ to 25 ℃, the material grade of a related oxygen supply path is greatly reduced, and the construction cost of the device is saved; and the oxygen supply pipeline can not generate dew point corrosion any more, thereby ensuring the operation safety of the device.

In the invention, the burner head and the burner body are welded through a transfer piece, so that the structure is convenient for maintaining and cutting the burner and is beneficial to ensuring the concentricity of the burner.

(III) the gap of the opening part of the water outlet channel is 0.5-2mm, which is beneficial to the formation of a water liquid film. An atomization rotational flow structure, particularly a welding fin type or integral milling groove structure is arranged in the water channel, so that the stability of the pressure and the flow of the furnace entering water is facilitated.

(IV) the invention can greatly reduce the supply temperature of the burner oxygen pipeline, and can obviously improve the economy or the safety; the water channel not only can use common process water, but also can be filled with industrial wastewater to burn in the gasification furnace, and is more favorable for the complete conversion of impurities in water under the high-temperature and high-pressure condition of the gasification furnace. Can become an effective way for enterprises to treat the industrial wastewater. Only adjusting the position of part of the pipe orifice of the burner, readjusting the channel in the burner, not changing the main structure of the burner and the butt joint size of the burner and the gasification furnace, and having little change and no damage to the existing device of an owner; meanwhile, the advantages of the original burner design are inherited.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of an adapter of the present invention;

FIG. 3 is a schematic view of a connection structure of the adapter and the burner head according to the present invention;

FIG. 4 is an enlarged partial view of the burner head of the present invention;

FIG. 5 is a schematic structural view of the burner body of the present invention;

FIG. 6 is a schematic view of the connection of the adapter and the burner body of the present invention;

FIG. 7 is a schematic view of the atomizer of the present invention;

in the figure, the reference numbers are 1-burner head, 2-adaptor, 3-burner body and 4-atomizer;

11-pulverized coal outlet channel, 12-oxygen outlet channel, 13-water outlet channel, 141-cooling water inlet channel end part ring groove and 142-cooling water outlet channel end part ring groove;

20-adaptor body, 21-pulverized coal through hole, 211-first annular bulge, 22-oxygen through hole, 221-second annular bulge, 23-water through hole, 231-third annular bulge, 24-cooling water inlet through hole, 241-fourth annular bulge, 25-cooling water outlet through hole, 251-fifth annular bulge;

31-pulverized coal channel, 311-pulverized coal inlet flange, 32-oxygen channel, 321-oxygen inlet, 322-oxygen inlet flange, 33-water channel, 331-water inlet, 332-water inlet flange, 34-cooling water jacket, 341-cooling water inlet channel, 3411-cooling water inlet, 3412-cooling water inlet flange, 342-cooling water outlet channel, 3421-cooling water outlet, 3422-cooling water outlet flange and 35-mounting flange.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 to 7, a three-phase co-injection pulverized coal burner comprises a burner head 1, an adapter 2 and a burner body 3 which are connected in sequence; the burner body part 3 comprises a multi-stage channel which is formed by sequentially sleeving a plurality of layers of sleeve structures, and the multi-stage channel comprises a pulverized coal channel 31, an oxygen channel 32, a water channel 33 and a cooling water jacket 34 from inside to outside; the cooling water jacket 34 includes a cooling water inlet passage 341 and a cooling water outlet passage 342 which are sleeved from the inside to the outside; the burner head 1 comprises a pulverized coal outlet channel 11, an oxygen outlet channel 12 and a water outlet channel 13 provided with an atomizer 4 which are sequentially sleeved from inside to outside; a cooling water inlet channel end part ring groove 141 and a cooling water outlet channel end part ring groove 142 which are communicated with each other are arranged on the outer ring of the water outlet channel 13; the adaptor 2 includes a circular adaptor body 20, a pulverized coal through hole 21 provided in the center of the adaptor body 20 and capable of communicating with the pulverized coal passageway 31 and the pulverized coal outlet passageway 11, respectively, a plurality of oxygen through holes 22 arranged around the pulverized coal through hole 21 and capable of communicating with the oxygen passageway 32 and the oxygen outlet passageway 12, a plurality of water through holes 23 arranged around the oxygen through holes 22 and capable of communicating with the water passageway 33 and the water outlet passageway 13, a plurality of cooling water inlet through holes 24 arranged around the water through holes 23 and capable of communicating with the cooling water inlet passageway 341 and the cooling water inlet passageway end portion annular groove 141, and a plurality of cooling water outlet through holes 25 arranged around the cooling water inlet through holes 24 and capable of communicating with the cooling water outlet passageway 342 and the cooling water outlet passageway end portion annular groove 142.

In the embodiment, the oxygen outlet channel 12 of the burner head 1 is in a tapered necking structure at the outlet, and the channel gap of the oxygen outlet channel 12 at the outlet is reduced, so that the oxygen can be accelerated to be sprayed out and sprayed to the front center position; the water outlet channel 13 is in a tapered necking structure at the outlet, and the gap of the opening part of the water outlet channel 13 is 0.5-2mm, which is beneficial to forming a water film and spraying the water film to the front center position.

The pulverized coal channel 31, the oxygen channel 32, the water channel 33 and the cooling water jacket 34 are all coaxially arranged; the pulverized coal outlet channel 11, the oxygen outlet channel 12, the water outlet channel 13, the cooling water inlet channel end part annular groove 141 and the cooling water outlet channel end part annular groove 142 are coaxially arranged; the pulverized coal through hole 21 is positioned at the center of the adaptor main body 20, and the plurality of oxygen through holes 22, the plurality of water through holes 23, the plurality of cooling water inlet through holes 24 and the plurality of cooling water outlet through holes 25 are respectively positioned on a circle with the center of the adaptor main body 20 as the center of circle; the radii of circles in which the oxygen gas through-holes 22, the water through-holes 23, the cooling water inlet through-holes 24, and the cooling water outlet through-holes 25 are located are increased in order.

The two ends of the pulverized coal through hole 21 are provided with first annular protrusions 211 which are coaxial with the pulverized coal through hole 21 and have the same radius, the first annular protrusions 211 on the two sides of the adapter can be respectively welded with the end part of the side wall of the channel forming the pulverized coal channel 31 and the end part of the side wall of the channel forming the pulverized coal outlet channel 11, and the channels formed by the pulverized coal channel 31, the pulverized coal through hole 21 and the pulverized coal outlet channel 11 are guaranteed to be sealed channels for allowing pulverized coal to pass through.

A second annular bulge 221 which takes the center of the adaptor 20 as the center is arranged between the oxygen through hole 22 and the water through hole 23, the second annular bulges 221 at the two sides of the adaptor can be respectively welded with the end part of the side wall of the channel forming the oxygen channel 32 and the end part of the side wall of the channel forming the oxygen outlet channel 12, and the channel formed by the oxygen channel 32, the oxygen through hole 22 and the oxygen outlet channel 12 is ensured to be a sealed channel for passing oxygen.

A third annular bulge 231 taking the center of the adaptor 20 as the center of a circle is arranged between the water through hole 23 and the cooling water inlet through hole 24, the third annular bulges 231 on the two sides of the adaptor 20 can be respectively welded with the end part of the side wall of the channel forming the water channel 33 and the end part of the side wall of the channel forming the water outlet channel 13, and the channel formed by the water channel 33, the water through hole 23 and the water outlet channel 13 is ensured to be a sealed channel for passing water.

A fourth annular bulge 241 which takes the center of the adaptor 20 as the center of a circle is arranged between the cooling water inlet through hole 24 and the cooling water outlet through hole 25, the fourth annular bulges 241 at two sides of the adaptor 20 can be respectively welded with the end part of the channel side wall forming the cooling water inlet channel 341 and the end part of the ring groove side wall forming the ring groove 141 at the end part of the cooling water inlet channel, so as to ensure that a channel formed by the ring grooves at the end parts of the cooling water inlet channel 341, the cooling water inlet through hole 24 and the cooling water inlet channel 141 is a sealed channel for passing cooling water; the outer ring of the cooling water outlet through hole 25 is provided with a fifth annular protrusion 251 taking the center of the adaptor 20 as the center of a circle, the fifth annular protrusions 251 on the two sides of the adaptor 20 can be respectively welded with the end part of the channel side wall forming the cooling water outlet channel 342 and the end part of the ring groove side wall forming the ring groove 142 of the end part of the cooling water outlet channel, so as to ensure that the channel formed by the cooling water outlet channel 342, the cooling water outlet through hole 25 and the ring groove 142 of the end part of the cooling water outlet channel is a sealed channel for passing cooling water.

A pulverized coal inlet flange 311 is arranged at the inlet of the pulverized coal channel 31; the oxygen channel 32 is provided with an oxygen inlet 321 and an oxygen inlet flange 322 arranged on the oxygen inlet 321; the water channel 33 is provided with a water inlet 331 and a water inlet flange 332 arranged on the water inlet 331; a cooling water inlet 3411 and a cooling water inlet flange 3412 provided on the cooling water inlet 3411 are provided on the cooling water inlet 341; the cooling water outlet passage 342 is provided with a cooling water outlet 3421 and a cooling water outlet flange 3422 arranged on the cooling water outlet 3421; and the outer wall of the cold water outlet channel 342 is provided with an installation flange 35 which is coaxial with the burner body part 3.

The central axes of the oxygen inlet flange 322, the water inlet flange 332, the cooling water inlet flange 3412 and the cooling water outlet flange 3422 are all perpendicular to the central axis of the burner body 3, so that the oxygen source, the water source and the cooling water source can be conveniently connected.

As shown in fig. 7, the atomizer 4 arranged in the water outlet channel 13 is of a fin structure uniformly distributed along the circumference of the outer side wall of the oxygen outlet channel, and the thickness of the fins is 1-3 mm; the number of the fins is 20-40, and each fin and the axial direction form an included angle of 10-40 degrees, so that water can be fully swirled in the channel and then is sprayed out of the burner.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.