CN111349472A

CN111349472A - Burner and gasification furnace with same

Info

Publication number: CN111349472A
Application number: CN201811583014.5A
Authority: CN
Inventors: 冯子洋; 安海泉; 索娅; 方薪晖; 刘臻; 彭宝仔; 李烨
Original assignee: China Energy Investment Corp Ltd; National Institute of Clean and Low Carbon Energy
Current assignee: China Energy Investment Corp Ltd; National Institute of Clean and Low Carbon Energy
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-06-30
Anticipated expiration: 2038-12-24
Also published as: CN111349472B

Abstract

The invention discloses a burner and a gasification furnace with the same. The burner comprises: a body; a plurality of oxygen-containing gas pipes which are correspondingly arranged in the first installation channels one by one, a solid fuel channel is defined between the first installation channels and the oxygen-containing gas pipes, the center line of the outlet end of the solid fuel channel is intersected with the center line of the oxygen-containing gas channel at an impact point, the impact point is separated from the end surface of the body by a first distance, the center lines of the outlet end and the oxygen-containing gas channel are intersected with the end surface at a first point and a second point, the first point and the second point are separated by a second distance, and the ratio of the first distance to the second distance is more than or equal to 1 and less than or equal to 10; and a solid fuel dispenser. Therefore, the burner has the advantages of long service life and the like, and the gas-solid mixing rate can be enhanced, the gasification reaction efficiency is improved, the short circuit condition of solid particles in the gasifier is reduced, the volume of the gasifier is reduced, the manufacturing cost of the gasifier is reduced, and the operation cost of the gasifier is reduced.

Description

Burner and gasification furnace with same

Technical Field

The invention relates to the field of coal chemical industry, in particular to a burner and a gasification furnace with the burner.

Background

The coal gasification technology is one of the important ways of clean coal technology and is also the source technology of the coal chemical industry. The burner is one of key devices of the gasification furnace, and directly influences the safe, stable and efficient operation of the gasification process.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a burner and a gasification furnace with the burner.

In order to achieve the above object, a first aspect of the present invention provides a burner comprising: a body having a plurality of first mounting channels; a plurality of oxygen-containing gas tubes provided in the first installation channels in a one-to-one correspondence, each of the oxygen-containing gas tubes having an oxygen-containing gas channel, a solid fuel channel having a circular cross-sectional shape being defined between a wall surface of each of the first installation channels and the corresponding oxygen-containing gas tube, outlet ends of the solid fuel channel being configured in a constricted shape in which a center line of each of the outlet ends intersects a center line of the corresponding oxygen-containing gas channel at a point so as to form an impingement point, each of the impingement points being spaced apart from an end surface of the body adjacent to the outlet end by a first distance, the center line of the outlet end intersecting the end surface at a first point, the center line of the corresponding oxygen-containing gas channel intersecting the end surface at a second point, the first point being spaced apart from the second point, wherein the ratio of the first distance to the second distance is greater than or equal to 1 and less than or equal to 10, and oxygen-containing gas and solid fuel are introduced into the gasification chamber through the corresponding oxygen-containing gas channel and the solid fuel channel to collide and combust to form flat flame and generate gasification reaction; and a solid fuel dispenser, the solid fuel dispenser comprising: a main tube having a feed inlet and a discharge outlet; the cover plate is arranged on the main pipe and covers the discharge hole, a plurality of distribution holes are formed in the cover plate, and the distribution holes are communicated with the solid fuel channels in a one-to-one correspondence mode.

The burner disclosed by the embodiment of the invention has the advantage of long service life.

Preferably, the body comprises: a body having a plurality of the first mounting channels; and a plurality of solid fuel pipes disposed in a one-to-one correspondence within the plurality of first installation channels, wherein a plurality of the oxygen-containing gas pipes are disposed in a one-to-one correspondence within a plurality of the solid fuel pipes, the solid fuel pipes defining the solid fuel channels with the respective oxygen-containing gas pipes, preferably, each of the solid fuel pipes has a first straight section, a second straight section, and an arc-shaped transition section, the first straight section and the second straight section are connected by the transition section, a portion of each of the first straight sections is disposed within the respective first installation channel, a plurality of the oxygen-containing gas pipes are disposed in a one-to-one correspondence within a plurality of the first straight sections, each of the first straight sections defines the solid fuel channels with the respective oxygen-containing gas pipe, and a plurality of the distribution holes communicating with a plurality of the second straight sections in a one-to-one correspondence, preferably, each of the first straight sections and the corresponding oxygen-containing gas pipe are coaxially arranged, preferably, each of the oxygen-containing gas pipes includes a third straight section and a fourth straight section, the third straight section is connected with the fourth straight section, wherein the third straight section is arranged in the corresponding first straight section, the solid fuel channel is defined between each of the first straight sections and the corresponding third straight section, the center line of the corresponding third straight section intersects with the end face at the second point, more preferably, the end of each of the third straight sections, which is far away from the gas outlet of the oxygen-containing gas channel, is configured to be conical, more preferably, each of the first straight sections and the corresponding third straight section are coaxially arranged, preferably, the ratio of the first distance to the second distance is greater than or equal to 3 and less than or equal to 6, and preferably, a plurality of swirl vanes are arranged on the portion of each of the first straight sections, which is adjacent to the discharge port of the solid fuel channel, more preferably, the included angle between each spinning plate and the horizontal plane is 25-45 degrees; preferably, the body further has an ignition channel around which a plurality of the solid fuel channels and a plurality of the oxygen-containing gas channels are disposed, and more preferably, the body further includes a squib, the main body having a second mounting channel, wherein the squib is disposed in the second mounting channel, the squib having the ignition channel; the body is provided with a plurality of heat exchange channels which are matched with the solid fuel channels and the oxygen-containing gas channels in a one-to-one correspondence mode, and each heat exchange channel surrounds the corresponding solid fuel channel and the corresponding oxygen-containing gas channel.

Preferably, the main pipe is provided with a contraction section, an equal section and an expansion section which are connected in sequence, wherein the contraction section is adjacent to the feeding hole, the expansion section is adjacent to the discharging hole, the cross-sectional area of the contraction section is reduced along the direction from the feeding hole to the discharging hole, the cross-sectional area of the equal section is unchanged along the direction from the feeding hole to the discharging hole, and the cross-sectional area of the expansion section is increased along the direction from the feeding hole to the discharging hole.

Preferably, the main tube has a circular cross-section, the constant-section segment has a cylindrical shape, each of the contraction segment and the expansion segment has a circular truncated cone shape, preferably, a ratio of a maximum cross-sectional area to a minimum cross-sectional area of the contraction segment is 1.05-4.5:1, a ratio of a maximum cross-sectional area to a minimum cross-sectional area of the expansion segment is 1.1-5:1, more preferably, a ratio of a maximum cross-sectional area to a minimum cross-sectional area of the contraction segment is 1.25-2:1, and a ratio of a maximum cross-sectional area to a minimum cross-sectional area of the expansion segment is 1.5-2.5: 1.

Preferably, the solid fuel distributor further comprises a purge pipe sleeved on the main pipe, the purge pipe is opposite to at least one of the contraction section, the constant section and the expansion section in the radial direction of the main pipe, an annular purge cavity is formed between the purge pipe and the main pipe, a purge gas inlet communicated with the purge cavity is formed in the purge pipe, a through hole communicated with the purge cavity is formed in the wall surface of at least one of the contraction section, the constant section and the expansion section, and preferably, the solid fuel distributor further comprises a filter layer, and the filter layer is arranged between the purge gas inlet and the through hole.

Preferably, an included angle between a center line of each of the distribution holes and a center line of the main pipe is greater than or equal to 2 degrees and less than or equal to 60 degrees, an included angle between a center line of each of the distribution holes and a center line of the main pipe is greater than or equal to 20 degrees and less than or equal to 45 degrees, a sum of cross sectional areas of the plurality of distribution holes is greater than or equal to a cross sectional area of the feed opening, and the plurality of distribution holes are provided on the cover plate at equal intervals in the circumferential direction of the main pipe.

Preferably, the solid fuel distributor further comprises a distribution member provided on the cover plate, the distribution member being located inside the main pipe, wherein the cross-sectional area of the distribution member increases in a direction from the feed port to the discharge port, preferably, the distribution member is conical or pyramidal, preferably, a distance between a center line of the distribution member and a center line of the main pipe in a horizontal direction is less than or equal to a preset value, and more preferably, the center line of the distribution member coincides with the center line of the main pipe.

Preferably, a plurality of partitioning members are arranged between two adjacent distribution holes, the partitioning members are arranged on the cover plate, the partitioning members extend from the cover plate to the direction adjacent to the feed port, the partitioning members are preferably arranged at equal intervals along the circumferential direction of the main pipe, and the inner ends of the partitioning members are connected with each other.

Preferably, a part of the first rim of the partitioning member is connected to the cover plate, and the remaining part of the first rim of the partitioning member is connected to the circumferential surface of the distribution member, and preferably, an inner end of the first rim of the partitioning member, an inner end of the second rim of the partitioning member, and a top end of the distribution member coincide, the first rim being opposite to the second rim, and more preferably, the second rim of the partitioning member is configured to be streamlined so as to be recessed toward the cover plate.

Preferably, the cover plate has a plurality of distribution portions recessed in a direction away from the feed opening, the plurality of distribution portions being provided at intervals in a circumferential direction of the main pipe, each of the distribution portions being provided with one of the distribution holes, and preferably, a portion of the cover plate located between adjacent two of the distribution portions constitutes the partitioning member, and more preferably, the distribution hole is located at a bottom of the distribution portion.

A second aspect of the present invention provides a gasification furnace, including: a furnace body; and the burner is the burner according to the first aspect of the invention, wherein the burner is arranged on the furnace body.

Drawings

FIG. 1 is a schematic illustration of a solid fuel distributor for a burner according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a solid fuel distributor of a burner according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along D-D of FIG. 2;

FIG. 4 is a schematic illustration of a partial structure of a solid fuel dispenser according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a burner according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is a schematic view of a partial structure of a burner according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A burner 1 according to an embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1 to 8, a burner 1 according to an embodiment of the present invention includes a body 200, a solid fuel distributor 100, and a plurality of oxygen-containing gas pipes 300.

The body 200 has a plurality of first mounting channels. A plurality of oxygen-containing gas tubes 300 are provided in the first installation passages in a one-to-one correspondence, each oxygen-containing gas tube 300 having an oxygen-containing gas passage 310. In other words, the number of oxygen-containing gas tubes 300 is equal to the number of the first installation passages, one oxygen-containing gas tube 300 being provided in one of the first installation passages.

The solid fuel channel 221 having a circular cross-section is defined between the wall surface of each of the first installation channels and the corresponding oxygen-containing gas pipe 300, that is, the solid fuel channel 221 is defined between each of the first installation channels and the oxygen-containing gas pipe 300 located therein.

The outlet end 2211 of the solid fuel passage 221 is configured in a constricted shape. That is, the outer diameter (inner diameter) of the outlet end portion 2211 decreases in the direction adjacent to the outlet of the solid fuel passage 221. For example, the outer diameter (inner diameter) of the outlet end portion 2211 decreases in the direction from top to bottom.

The center line of each outlet end 2211 intersects the center line of the corresponding oxygen-containing gas channel 310 (the oxygen-containing gas channel 310 located inside the outlet end 2211) at a point to form impact points P each of which is spaced apart from the end surface 212 of the body 200 adjacent to the outlet end 2211 by a first distance S1, i.e., the impact point P is spaced apart from the end surface 212 of the body 200 by the first distance S1.

The end face 212 of the body 200 is also adjacent to the outlet of the oxygen-containing gas channel 310. In other words, the outlet of the oxygen-containing gas channel 310 and the outlet of the solid fuel channel 221 are both open on the end face 212.

The center line of the outlet end 2211 intersects the end surface 212 at a first point, and the center line of the corresponding oxygen-containing gas channel 310 intersects the end surface 212 at a second point, the first point being spaced apart from the second point by a second distance S2, i.e., the first point being spaced apart from the second point by the second distance S2. Wherein a ratio of the first distance S1 to the second distance S2 is greater than or equal to 1 and less than or equal to 10. The oxygen-containing gas and the solid fuel are introduced into the gasification chamber through the respective oxygen-containing gas channel 310 and the solid fuel channel 221 to collide and combust to form flat flame and generate gasification reaction.

Solid fuel distributor 100 includes a main tube 110 and a cover plate 120. The main pipe 110 has a feed port 111 and a discharge port 112. The cover plate 120 is disposed on the main pipe 110, and the cover plate 120 covers the discharge hole 112. The cover plate 120 is provided with a plurality of distribution holes 121, and the plurality of distribution holes 121 are communicated with the plurality of solid fuel passages 221 in a one-to-one correspondence. That is, the number of distribution holes 121 is equal to the number of solid fuel passages 221, and one distribution hole 121 communicates with one solid fuel passage 221.

Since the solid fuel passage 221 has a circular cross-section, the outlet end 2211 has a circular ring shape, that is, the cross-section of the outlet end 2211 has a circular ring shape. The outlet end 2211 has an inner peripheral wall surface, an outer peripheral wall surface, and an intermediate surface. For example, the inner circumferential wall surface may be a part of the outer circumferential surface of the oxygen-containing gas pipe 300, and the outer circumferential wall surface may be a part of the wall surface of the first mounting passage.

Wherein the distance of the intermediate surface from the inner peripheral wall surface in the radial direction of the outlet end portion 2211 is equal to the distance of the intermediate surface from the outer peripheral wall surface in the radial direction of the outlet end portion 2211. The intermediate plane intersects a plane passing through the center line of the oxygen-containing gas channel 310 at a first straight line L1 and a second straight line L2. Each of the first and second lines L1 and L2 may be a centerline of the outlet end 2211.

The solid fuel channel 221 and the oxygen-containing gas pipe 300 (oxygen-containing gas channel 310) located therein may constitute one process burner part, and therefore the burner 1 according to the embodiment of the present invention has a plurality of such process burner parts, i.e., the burner 1 according to the embodiment of the present invention integrates a plurality of process burners.

Compared with the prior art that a single burner is arranged, the burner 1 provided by the embodiment of the invention integrates a plurality of burners, so that the flame length can be reduced, and the temperature is more uniformly distributed near the burner 1. This reduces the peak temperature value and thus prolongs the service life of the burner 1.

Since the center line of each outlet end 2211 intersects the center line of the corresponding oxygen-containing gas channel 310 at a point so as to form the impingement point P, the solid fuel (e.g., pulverized coal) injected from each solid fuel channel 221 and the oxygen-containing gas injected from the corresponding oxygen-containing gas channel 310 collide below the burner 1 (when the burner 1 is installed on the furnace body of the gasification furnace), so that the oxygen-containing gas and the solid fuel can be mixed more rapidly and uniformly, so that the gasification reaction rate can be increased.

Moreover, since the solid fuel and the oxygen-containing gas are delivered into the furnace body of the gasification furnace through a plurality of the process burner parts, the oxygen-containing gas and the solid fuel can be mixed more quickly and more uniformly, so that the gasification reaction rate can be increased. Further, the oxygen-containing gas and the solid fuel can be burned off in a shorter residence time to complete the gasification reaction, and the shorter residence time represents a smaller gasifier volume, so that the use of the burner 1 can reduce the gasifier volume and the manufacturing cost of the gasifier.

Gasification furnaces with single nozzles have an average residence time t for the same furnace, i.e. for the same furnace volume_m4.41s, and 72.54% of particles leave the gasification furnace before the average residence time, which shows that the gasification furnace provided with the single nozzle has the defects of serious short circuit and low gas-solid mixing efficiency; gasification furnace with burner 1 having an average residence time t_m16.09s and the smallest dimensionless variance σ θ 2 is 0.2, while only 58.57% of the particles leave the gasifier before the mean residence time. Therefore, the gasification furnace provided with the burner 1 has more uniform particle residence time distribution, higher mixing efficiency and longer residence time under the same furnace volume.

Since the average residence time of the gasification furnace provided with the burner 1 is four times as long as that of the gasification furnace provided with a single nozzle, the furnace volume of the gasification furnace provided with the burner 1 can be 1/4 of the furnace volume of the gasification furnace provided with a single nozzle with the same average residence time. Therefore, even if the volume of the furnace body of the gasification furnace provided with the burner 1 is reduced, the reaction requirement can be met, so that the volume of the gasification furnace can be reduced, and the manufacturing cost of the gasification furnace can be reduced.

Since the oxygen-containing gas tubes 300 are located within the solid fuel channels 221, a "coal-on-gas" feed pattern may be formed. The feeding manner of the "coal-in-gas" not only helps to adjust the flame length, but also can rapidly disperse the solid fuel (such as pulverized coal) provided by the solid fuel channel 221 by using the oxygen-containing gas provided by the oxygen-containing gas pipe 300, so that the temperature distribution of the high-temperature region of the gasification furnace can be more uniform, that is, the temperature distribution near the burner 1 can be more uniform.

By setting the ratio of the first distance S1 to the second distance S2 to 1 or more and 10 or less, preferably 2 to 4 times, it is possible to form a plurality of parallel flames spaced apart from each other, the number of flames (the number of clusters) being equal to the number of process burner parts. Wherein the length of each flame cluster is about 5-30 times, preferably 10-20 times, the first distance S1, and the diameter is about 2-3 times the second distance S2, so that the flame sprayed by the burner 1 according to the embodiment of the present invention is a flat flame.

Experiments prove that by controlling the first distance S1, the second distance S2 and the flow rates of the oxygen-containing gas and the solid fuel, the width and the length of flame which is combusted downwards after the oxygen-containing gas and the solid fuel collide can be adjusted, and the explosive flame is prevented from damaging the inner wall of the gasification chamber while slag adhering is ensured. A plurality of flame clusters formed by fully mixing oxygen-containing gas and solid fuel flow downwards while burning, so that the solid fuel in each flame burns more fully, and the reaction rate is obviously improved.

Compared with the multi-nozzle material flow collision type gasification technology in the prior art, the flat flame type gasification technology has the characteristics of high gasification reaction speed, short flame, short reaction residence time, high process heat and the like, so that the coal adaptability can be obviously improved, and moreover, because the flame length and the reaction residence time are both short, the requirement on gasification reaction space is low, so that the overall investment and the operation cost of the whole system are reduced.

Moreover, the burner 1 according to the embodiment of the present invention is provided with the solid fuel distributor 100, so that only one delivery pipe for delivering the solid fuel to the burner 1 needs to be provided, and the solid fuel can be uniformly delivered into the furnace body of the gasification furnace, so that the investment cost (investment of equipment and monitoring systems of the delivery pipe) and the operation cost of delivering the solid fuel can be greatly reduced. Therefore, by providing the solid fuel distributor 100, it is possible to supply the solid fuel to the plurality of solid fuel passages 221 without increasing the investment cost and the operation cost, so as to realize the arrangement of the plurality of process burner parts on the furnace body of the gasification furnace.

Therefore, the burner 1 provided by the embodiment of the invention has the advantages of long service life and the like, and the gas-solid mixing rate can be enhanced by the burner 1 provided by the embodiment of the invention, so that the gasification reaction efficiency is improved, the short circuit condition of solid particles in the gasifier is reduced, the volume of the gasifier is reduced, the manufacturing cost of the gasifier is reduced, and the operation cost of the gasifier is reduced.

As shown in fig. 1-8, in some embodiments of the invention, burner 1 may include a body 200 and a solid fuel distributor 100, body 200 may include a main body 210 and a plurality of solid fuel pipes 220.

The main body 210 has a plurality of the first installation passages, a plurality of the solid fuel pipes 220 are provided in the first installation passages in a one-to-one correspondence, and each of the solid fuel pipes 220 has a solid fuel passage 221. That is, the number of first mounting passages may be equal to the number of solid fuel pipes 220, one solid fuel pipe 220 being mounted within one of the first mounting passages. The end face 212 of the body 200 adjacent the outlet end 2211 is also the end face of the body 210 adjacent the outlet end 2211.

Wherein the plurality of oxygen-containing gas pipes 300 are disposed in the plurality of solid fuel pipes 220 in a one-to-one correspondence, and a solid fuel channel 221 is defined between the solid fuel pipes 220 and the corresponding oxygen-containing gas pipe 300 (the oxygen-containing gas pipe 300 located in the solid fuel pipe 220).

In addition, the body 200 may also have a plurality of solid fuel tubes 220. A plurality of the solid fuel pipes 220 are provided in a one-to-one correspondence in a plurality of the first installation passages, each of the solid fuel pipes 220 having a solid fuel passage 221, and an oxygen-containing gas passage 310 having a circular cross-section is defined between a wall surface of each of the first installation passages and the corresponding solid fuel pipe 220.

Preferably, each solid fuel channel 221 and the corresponding oxygen-containing gas channel 310 (oxygen-containing gas tube 300) are coaxially arranged, i.e., each solid fuel channel 221 and the oxygen-containing gas channel 310 (oxygen-containing gas tube 300) located therein are coaxially arranged. In other words, with respect to the solid fuel channel 221 and the oxygen-containing gas channel 310 (oxygen-containing gas tube 300) located therein, the center line of the solid fuel channel 221 coincides with the center line of the oxygen-containing gas channel 310 (center line of the oxygen-containing gas tube 300). Therefore, the structure of the burner 1 can be more reasonable.

As shown in fig. 6 and 7, in one embodiment of the invention, each solid fuel tube 220 includes a first straight section 222, a second straight section 223, and an arcuate transition section 224, the first straight section 222 and the second straight section 223 being connected by the transition section 224. Specifically, a first end of the transition section 224 is connected to a first end of the first straight section 222, a second end of the transition section 224 is connected to a first end of the second straight section 223, a second end of the second straight section 223 is a feed end of the solid fuel pipe 220, and a second end of the first straight section 222 is a discharge end of the solid fuel pipe 220.

When the burner 1 is in a use state or after being installed, that is, when the burner 1 is installed on the furnace body of the gasification furnace, the lower end of the transition section 224 is connected with the upper end of the first straight section 222, the upper end of the transition section 224 is connected with the lower end of the second straight section 223, the upper end of the second straight section 223 is a feeding end of the solid fuel pipe 220, the lower end of the first straight section 222 is a discharging end of the solid fuel pipe 220, and the lower end of the solid fuel passage 221 is an outlet end 2211. The up-down direction is shown by arrow C in fig. 2 and 6. When the burner 1 is in use or after being installed, the first straight section 122 may be vertically disposed, and the second straight section 123 may be obliquely disposed.

Wherein a part of each first straight section 222 is arranged in the corresponding first installation channel, the plurality of oxygen-containing gas pipes 300 are arranged in the plurality of first straight sections 222 in a one-to-one correspondence, and the plurality of distribution holes 121 are communicated with the plurality of second straight sections 223 in a one-to-one correspondence. Each first straight section 222 defines a solid fuel channel 221 with a corresponding oxygen containing gas tube 300 (the oxygen containing gas tube 300 located inside the first straight section 222). Thereby making the results of the solid fuel pipe 220 more reasonable.

Preferably, each first straight section 222 and the corresponding oxygen containing gas pipe 300 are coaxially arranged, i.e., each first straight section 222 and the oxygen containing gas pipe 300 disposed therein are coaxially arranged. That is, with respect to the first straight section 222 and the oxygen-containing gas pipe 300 provided therein, the center line of the first straight section 222 coincides with the center line of the oxygen-containing gas pipe 300. Therefore, the structure of the burner 1 can be more reasonable.

As shown in fig. 6, each oxygen containing gas tube 300 includes a third straight section 320 and a fourth straight section 330, the third straight section 320 being connected to the fourth straight section 330, the third straight section 320 being provided in the corresponding first straight section 222. That is, for the solid fuel pipe 220 and the oxygen containing gas pipe 300 disposed therein, the third straight section 320 of the oxygen containing gas pipe 300 is disposed within the first straight section 222 of the solid fuel pipe 220.

Each first straight segment 222 defines a solid fuel channel 221 with a corresponding third straight segment 320 (the third straight segment 320 located inside the first straight segment 222), the centerline of the corresponding third straight segment 320 intersecting the end face 212 at the second point. Therefore, the structure of the burner 1 can be more reasonable. When the burner 1 is in use or after being installed, the third straight section 320 may be disposed vertically, and the fourth straight section 330 may be disposed horizontally.

Preferably, the ratio of the first distance S1 to the second distance S2 is greater than or equal to 3 and less than or equal to 6. Each flame has a length of about 5 to 30 times the first distance S1 and a diameter of about 2 times the second distance S2.

More preferably, the flow velocity of the oxygen-containing gas at the outlet of burner 1 may be about 70m/s, the flow velocity of the solid fuel may be about 8m/s, and the flow velocity of the oxygen-containing gas is preferably 2 to 10 times the flow velocity of the solid fuel. In other words, the fluid velocity of the oxygen-containing gas at the outlet of the oxygen-containing gas channel 310 may be about 70m/s, and the fluid velocity of the solid fuel at the outlet of the solid fuel channel 221 may be about 8 m/s.

Each first straight section 222 includes a vertical section and a constricted section connected thereto, the constricted section defining an outlet end 2211 with the third straight section 320 located inside thereof. Wherein, the included angle between the vertical section and the contraction section is 135-165 degrees.

By changing the angle between the vertical section and the constricted section, the first distance S1, i.e. the distance between the impact point P and the end surface 212 of the body 200, and thus the ratio of the first distance S1 to the second distance S2, can be changed to adjust the length of the flame of the burner 1.

More preferably, the angle between the vertical section and the constricted section is 143-157 degrees. Most preferably, the angle between the vertical section and the constricted section is 150 degrees.

Since the burner 1 comprises a plurality of process burner parts, a plurality of impact points P exist when the burner 1 operates, and the impact points P are substantially located on the same plane, so as to facilitate the formation of what is called a flat flame.

Preferably, each first straight section 222 and the corresponding third straight section 320 are coaxially arranged, that is, each first straight section 222 and the third straight section 320 arranged therein are coaxially arranged. That is, for the first straight section 222 and the third straight section 320 provided therein, the center line of the first straight section 222 and the center line of the third straight section 320 coincide, the first straight section 222 defines a first portion of the solid fuel channel 221, the third straight section 320 defines a first portion of the oxygen-containing gas channel 310, and the center line of the first portion of the solid fuel channel 221 and the center line of the first portion of the oxygen-containing gas channel 310 coincide. Therefore, the structure of the burner 1 can be more reasonable.

As shown in fig. 6, an end 321 of each third straight section 320 far from the gas outlet of the oxygen-containing gas channel 310 is configured to be conical, that is, the end 321 of the third straight section 320 far from the discharge port of the solid fuel channel 221 is configured to be conical.

Since the third straight section 320 is provided in the first straight section 222, a part of the solid fuel channel 221 is occupied by the third straight section 320. That is, a portion of the solid fuel passage 221 is defined between the first straight section 222 and the third straight section 320, i.e., a space (gap) between the first straight section 222 and the third straight section 320 constitutes the portion of the solid fuel passage 221.

By configuring the end 321 of the third straight section 320, which is away from the gas outlet of the oxygen-containing gas channel 310, to be conical, the solid fuel in the solid fuel channel 221 can be divided by the end 321 of the third straight section 320, so that the solid fuel can be uniformly distributed in the portion of the solid fuel channel 221, that is, the solid fuel can be uniformly distributed in the space between the first straight section 222 and the third straight section 320.

When the burner 1 is in use or after being installed, the upper end of the third straight section 320 is configured to be conical, the lower port of the oxygen-containing gas channel 310 (the lower port of the third straight section 320) forms an air outlet of the oxygen-containing gas channel 310, and the lower port of the solid fuel channel 221 (the lower port of the solid fuel pipe 220) forms an outlet of the solid fuel channel 221.

Preferably, a plurality of swirl plates are provided on a portion of each first straight section 222 adjacent to the discharge port of the solid fuel channel 221. Thereby, the solid fuel can be injected into the furnace body of the gasification furnace in a rotational flow manner, which not only facilitates the solid fuel to be rapidly mixed with the oxygen-containing gas (gasification agent) in the furnace body and the heat of reaction to be rapidly diffused, but also facilitates the residence time of the solid fuel in the gasification furnace to be increased so as to obtain higher carbon conversion rate.

More preferably, each spinning disk is angled from 25 to 45 degrees from horizontal. This not only facilitates rapid mixing of the solid fuel with the oxygen-containing gas (gasifying agent) in the furnace body and rapid diffusion of the heat of reaction, but also further increases the residence time of the solid fuel in the gasifier to achieve a higher carbon conversion.

As shown in fig. 6 and 7, the body 200 further has an ignition channel 231, and a plurality of solid fuel channels 221 and a plurality of oxygen-containing gas channels 310 are disposed around the ignition channel 231. By providing the ignition passage 231, rapid switching of the supply of the raw material can be achieved during gasification, so that the operating cost of the gasification furnace can be reduced.

The gasifier can be heated by auxiliary fuels such as natural gas, liquefied petroleum gas and diesel oil, or the process burner is assisted by means of high-voltage arc and plasma to finish the ignition operation of coal feeding, so that the purpose of feeding and igniting the normal-temperature gasifier is achieved. The ignition channel 231 may include an inner ring and an outer ring arranged coaxially, through one of which oxidant may enter the gasifier and through the other of which fuel may enter the gasifier.

Specifically, the body 200 further includes a squib 230, and the main body 210 has a second installation passage in which the squib 230 is provided, and the squib 230 has a firing passage 231. Therefore, the structure of the burner 1 can be more reasonable.

As shown in fig. 6 and 7, the body 200 (main body 210) has a plurality of heat exchange channels 211, the plurality of heat exchange channels 211 are fitted with a plurality of solid fuel channels 221 and a plurality of oxygen-containing gas channels 310 in a one-to-one correspondence, and each heat exchange channel 211 surrounds the corresponding solid fuel channel 221 and the corresponding oxygen-containing gas channel 310 so as to cool the corresponding process burner part. Preferably, the plurality of heat exchange passages 211 may communicate with each other, whereby only one cooling liquid inlet and one cooling liquid outlet need be provided on the body 200 (main body 210), thereby making it possible to make the structure of the burner 1 simpler.

As shown in FIG. 2, in some examples of the invention, the parent pipe 110 has a converging section 113, a constant cross-section 114, and an expanding section 115 connected in series. The contraction section 113 is adjacent to the inlet 111, and the expansion section 115 is adjacent to the outlet 112, that is, among the contraction section 113, the constant section 114 and the expansion section 115, the inlet 111 is closest to the contraction section 113, and the outlet 112 is closest to the expansion section 115. In other words, along the direction from the inlet 111 to the outlet 112, there are a contraction section 113, a constant section 114, and an expansion section 115 in this order. That is, the contraction section 113 is located between the inlet 111 and the constant section 114, and the expansion section 115 is located between the constant section 114 and the outlet 112.

The cross-sectional area of the contraction section 113 decreases in the direction from the inlet 111 to the outlet 112, the cross-sectional area of the constant section 114 does not change in the direction from the inlet 111 to the outlet 112, and the cross-sectional area of the expansion section 115 increases in the direction from the inlet 111 to the outlet 112. Wherein, the direction from the feed port 111 to the discharge port 112 is the flowing direction of the solid fuel.

The solid fuel enters the main pipe 110 through the feed port 111, that is, enters the solid fuel distributor 100, and the solid fuel sequentially passes through the contraction section 113, the constant section 114, and the expansion section 115 in the main pipe 110. Wherein, the contraction section 113 is used for accelerating solid fuel particles, the constant section 114 is used for stabilizing the velocity field of the solid fuel particles so as to avoid the uneven distribution of the solid fuel particles at the downstream caused by the large fluctuation of the flow of the solid fuel particles, and the expansion section 115 is used for evenly distributing the solid fuel particles at each distribution hole 121 according to the velocity inertia.

That is, the solid fuel particles are accelerated in the contraction section 113, and the solid fuel particles are stabilized by the constant cross section 114, enter the expansion section 115, and finally enter the plurality of solid fuel sub-delivery pipes 30 through the plurality of distribution holes 121, so as to achieve uniform distribution of the solid fuel particles.

According to the solid fuel distributor 100 provided by the embodiment of the invention, the contraction section 113, the constant section 114 and the expansion section 115 which are connected in sequence are arranged, so that the velocity field of solid fuel particles can be stabilized, and the solid fuel particles can be evenly distributed into the distribution holes 121 according to the velocity inertia.

The burner 1 according to the embodiment of the present invention can uniformly distribute the solid fuel into a plurality of strands by providing the solid fuel distributor 100. Therefore, the flame length can be further reduced, the temperature is more uniformly distributed near the burner 1, and the peak value of the temperature can be further reduced, so that the service life of the burner 1 can be further prolonged.

By using the solid fuel distributor 100 according to the embodiment of the present invention, it is possible to uniformly distribute solid fuel particles into the plurality of solid fuel passages 221 communicating with the plurality of distribution holes 121 in one-to-one correspondence. Therefore, only one main solid fuel conveying pipeline for conveying the solid fuel to the solid fuel distributor 100 (the main solid fuel conveying pipeline can be connected with the feeding hole 111 of the main pipe 110 of the solid fuel distributor 100) is needed to realize uniform conveying of the solid fuel into the furnace body of the gasification furnace, so that the investment cost (the equipment and monitoring system investment of the conveying pipeline) and the operation cost of conveying the solid fuel can be greatly reduced. That is, when the burner 1 has a plurality of process burners, N-1 feed lines for feeding solid fuel to the process burners and a monitoring system for monitoring the feed lines can be omitted by providing the solid fuel distributor 100, where N is the number of the process burners.

The solid fuel can be screened coal, petroleum coke, semi-coke and the like, can be conveyed by conveying gas such as N2, CO2 and the like, can also be prepared into water-coal-slurry for conveying, and can be conveyed at the conveying pressure of 0.1MPag-6MPag, preferably 2MPag-5.5 MPag.

Specifically, the solid fuel distributor 100 may be disposed at an upper portion of a furnace body of the gasification furnace, and an upper end portion of a main pipe 110 of the solid fuel distributor 100 may be connected to the main solid fuel conveying pipe by a flange, a ferrule, welding, or other connection means. The inner diameter at the interface of the main pipe 110 may be the same as the inner diameter of the main solid fuel transport pipe, and the portion of the main solid fuel transport pipe adjacent to the main pipe 110 may be maintained in a straight pipe state to avoid a sudden change in pipe resistance. The main solid fuel delivery pipe may be connected to a dispensing canister.

The plurality of distribution holes 121 may be connected to the plurality of solid fuel pipes 220 through the plurality of solid fuel branch delivery pipes 30 in a one-to-one correspondence. Specifically, the upper ends of the plurality of sub-solid fuel transport pipes 30 may be connected to the plurality of distribution holes 121 in a one-to-one correspondence, and the lower ends of the plurality of sub-solid fuel transport pipes 30 may be extended into (the second straight section 223 of) the plurality of solid fuel pipes 220 in a one-to-one correspondence. That is, the solid fuel may exit the solid fuel dispenser 100 through a plurality of dispensing holes 121 located at the discharge port 112.

The solid fuel is thus distributed by the solid fuel distributor 100 uniformly into the plurality of solid fuel branch conveying pipes 30 and further into the plurality of solid fuel channels 221 through the plurality of solid fuel branch conveying pipes 30.

Specifically, each of the individual solid fuel delivery pipes 30 may be connected to the cover plate 120 by a flange, a ferrule, a weld, or other connection. The plurality of solid fuel branch conveying pipes 30 may be symmetrical with respect to a center line of the solid fuel distributor 100.

As shown in fig. 2, the upper end of the constant-section 114 may be connected to the lower end of the contraction section 113, and the lower end of the constant-section 114 may be connected to the upper end of the expansion section 115. Preferably, the main tube 110 may be circular in cross-section, the constant section segment 114 may be cylindrical, and each of the convergent segment 113 and divergent segment 115 may be frustoconical. Thereby making the structure of the solid fuel dispenser 100 more rational.

The ratio of the maximum cross-sectional area to the minimum cross-sectional area of the contraction section 113 may be 1.05-4.5:1, and the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the expansion section 115 may be 1.1-5: 1. Preferably, the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the contraction section 113 may be 1.25 to 2:1, and the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the expansion section 115 may be 1.5 to 2.5: 1.

Preferably, the sum of the cross-sectional areas of the plurality of distribution holes 121 may be equal to or greater than the cross-sectional area of the feed port 111, the sum of the cross-sectional areas of the plurality of distribution holes 121 may be equal to or greater than the cross-sectional area of the main solid fuel conveying pipe, the sum of the cross-sectional areas of the plurality of sub solid fuel conveying pipes 30 may be equal to or greater than the cross-sectional area of the main solid fuel conveying pipe, and the sum of the cross-sectional areas of the plurality of sub solid fuel conveying pipes 30 may be. The cross-sectional area of the feed port 111 is equal to or greater than the cross-sectional area of the main solid fuel conveying pipe.

More preferably, the sum of the cross-sectional areas of the plurality of distribution holes 121 may be equal to the cross-sectional area of the feed port 111, the sum of the cross-sectional areas of the plurality of distribution holes 121 is equal to the cross-sectional area of the main solid fuel conveying pipe, the sum of the cross-sectional areas of the plurality of sub solid fuel conveying pipes 30 is equal to the cross-sectional area of the main solid fuel conveying pipe, and the sum of the cross-sectional areas of the plurality of sub solid fuel conveying pipes 30 is equal to the cross-sectional area of. The cross-sectional area of the feed port 111 is equal to the cross-sectional area of the main solid fuel conveying pipe.

As shown in fig. 1 and 2, in one example of the invention, the solid fuel distributor 100 may further include a purge tube 130. The purge tube 130 may be sleeved on the main tube 110, and the purge tube 130 may be opposite to at least one of the contraction section 113, the constant-section 114, and the expansion section 115 in a radial direction of the main tube 110. In other words, the purge tube 130 may be sleeved on at least one of the constricted section 113, the constant section 114, and the expanded section 115.

An annular purge cavity 131 may be formed between the purge tube 130 and the main tube 110. The purge pipe 130 may be provided with a purge gas inlet 132 communicating with the purge chamber 131, and a wall surface of at least one of the contraction section 113, the constant-section 114, and the expansion section 115 may be provided with a through hole communicating with the purge chamber 131.

Wherein purge gas can enter the purge chamber 131 through the purge gas inlet 132 and then enter the main pipe 110 through the through hole. By purging the solid fuel particles in the main pipe 110 with the purge gas, not only can accumulation of the solid fuel particles on the inner wall of the main pipe 110 be avoided, but also the solid fuel particles near the wall surface of the main pipe 110 can be accelerated to make the flow of the solid fuel particles in the main pipe 110 close to the plug flow, and particularly to make the solid fuel particles close to the plug flow distribution in the constant-section 114 and the expanded section 115.

That is, by externally covering the purge pipe 130 on the main pipe 110, it is possible to prevent clogging due to accumulation of solid fuel particles on the wall surface of the main pipe 110 or unstable flow of the solid fuel particles, and accelerate the solid fuel particles near the wall surface of the main pipe 110.

Preferably, the purge tube 130 may be radially opposite the constant cross-section 114 from the main tube 110. Specifically, the upper end of the purge tube 130 may be flush with the upper end of the constant-section 114 and the lower end of the purge tube 130 may be flush with the lower end of the constant-section 114, so as to keep the solid fuel particles in a purged state throughout the constant-section 114. The length of the purge pipe 130 can thereby be reduced while substantially ensuring the purge effect described above.

Further, the upper end of the purge pipe 130 may be higher than the upper end of the constant-section 114, and the lower end of the purge pipe 130 may be lower than the lower end of the constant-section 114, i.e., the purge pipe 130 may be opposed to at least a portion of the contraction section 113 and at least a portion of the expansion section 115 in the radial direction of the main pipe 110. Therefore, sudden pressure change caused by the sudden change of the sectional area of the pipeline through which the solid fuel particles flow through the main pipe 110 (the sudden pressure change is easy to cause solid fuel particle accumulation and blockage) can be avoided.

As shown in fig. 2, the solid fuel distributor 100 may further include a filter layer 133, and the filter layer 133 may be provided between the purge gas inlet 132 and the through hole. In other words, the filter layer 133 may be fitted over the main pipe 110, and the filter layer 133 may be located between the purge pipe 130 and the equal-section 114, and the purge gas may be introduced into the main pipe 110 through the purge gas inlet 132, the filter layer 133, and the through hole in this order. Whereby the sweep gas entering the main pipe 110 can be filtered by the filter layer 133. Specifically, the filter layer 133 may be made of sintered metal.

Preferably, the purge gas inlet 132 may be plural, and the through hole may be plural. The plurality of purge gas inlets 132 may be provided on the purge pipe 130 at equal intervals in the circumferential direction of the purge pipe 130, and the plurality of through holes may be provided on the main pipe 110 at equal intervals in the circumferential and radial directions of the main pipe 110. This makes it possible to introduce the purge gas into the main pipe 110 more uniformly, and the purge effect can be further improved. The purge gas may be a transport gas for transporting the solid fuel, such as N2 or CO2, or may be a gas medium such as a syngas generated by a gasification furnace so as to reduce the influence on the effective gas components in the syngas obtained by gasifying the solid fuel.

As shown in fig. 3 and 4, a plurality of dispensing holes 121 may be provided in the cap plate 120 at equal intervals in the circumferential direction of the main pipe 110. That is, a plurality of dispensing holes 121 may be provided on the lid plate 120 at equal intervals in the circumferential direction of the lid plate 120. This may enable solid fuel dispenser 100 to more evenly dispense solid fuel into plurality of dispensing orifices 121 and, thus, into plurality of solid fuel distribution pipes 30.

An angle between the center line of each dispensing hole 121 and the center line of the main tube 110 may be 2 degrees or more and 60 degrees or less. Preferably, the angle between the center line of each dispensing hole 121 and the center line of the main tube 110 may be 20 degrees or more and 45 degrees or less. Preferably, the plurality of distribution holes 121 may be symmetrical with respect to a center line of the solid fuel dispenser 100 (i.e., a center line of the main pipe 110).

As shown in fig. 4, in one example of the present invention, the solid fuel dispenser 100 may further include a distribution member 140, the distribution member 140 may be provided on the cap plate 120, and the distribution member 140 may be located within the main pipe 110. Wherein the cross-sectional area of the distribution member 140 may increase in a direction from the inlet port 111 to the outlet port 112. Specifically, the distribution member 140 may be provided on an upper surface of the cover plate 120, and the cross-sectional area of the distribution member 140 may increase from top to bottom.

Since the cross-sectional area of the distributing member 140 may decrease in the direction from the discharge port 112 to the feed port 111, that is, the cross-sectional area of the distributing member 140 may decrease from bottom to top, the distributing member 140 has a wedge effect on solid fuel particles flowing therethrough so as to divide the solid fuel particles. The distribution member 140 thus distributes the solid fuel particles along the annular space, thereby avoiding a distribution difference caused by uneven distribution of the solid fuel at the axial center of the main pipe 110 and near the wall surface (particularly, at the axial center of the expanding section 115 and near the wall surface). Wherein the annulus space may be the space between distribution member 140 and the wall of main tube 110 (expanding section 115). The dispensing member 140 may be considered a plug having a plugging effect.

Preferably, the distribution member 140 may be conical or pyramid-shaped. This makes it possible to better wedge the solid fuel particles and thus to distribute them more evenly spatially along the ring system. The dispensing member 140 may be welded to the cover plate 120, and the dispensing member 140 may be coupled to the cover plate 120 by a screw or a flange.

In a specific example of the present invention, the distance between the center line of the distributing member 140 and the center line of the main pipe 110 (the center line of the expanding section 115) in the horizontal direction is equal to or less than the second preset value. The centerline of distribution member 140 may thereby be located adjacent to the centerline of main tube 110 so that the solid fuel particles may be divided along the centerline adjacent to main tube 110 to more evenly distribute the solid fuel particles along the annulus.

Preferably, the centerline of the distribution member 140 coincides with the centerline of the main tube 110. The solid fuel particles can thereby be divided along the centerline of main tube 110 to more evenly spatially distribute the solid fuel particles along the annulus.

As shown in fig. 3 and 4, a partition 150 is provided between two adjacent distribution holes 121, the partition 150 is provided on the cover plate 120, and the partition 150 extends from the cover plate 120 in a direction adjacent to the feed opening 111. Specifically, the partition 150 is provided on the upper surface of the cap plate 120, and the partition 150 extends upward from the cap plate 120. Whereby adjacent two dispensing apertures 121 may be separated by a partition 150.

By providing the partitioning member 150 between the adjacent two distribution holes 121, the partitioning member 150 may be plural, and the plural partitioning members 150 may be provided at equal intervals in the circumferential direction of the main pipe 110, so that not only the solid fuel can be primarily distributed by the partitioning member 150, but also the solid fuel flowing to each distribution hole 121 can be restricted so as to reduce fluctuation in the flow rate of the solid fuel flowing to the distribution holes 121 due to the mixed flow of the solid fuel in the tangential direction of the main pipe 110 (the expanded section 115).

More preferably, the inner ends of the plurality of partitions 150 are connected to each other, i.e., the plurality of partitions 150 may be radial. Thereby making the structure of the solid fuel dispenser 100 more rational.

As shown in fig. 3 and 4, in one embodiment of the present invention, the solid fuel dispenser 100 may further include the above-described dispensing member 140 and the partition 150. Wherein a portion of the first edge of the partition 150 is connected to the cover plate 120, and the remaining portion of the first edge of the partition 150 is connected to the circumferential surface of the distribution member 140. Specifically, a portion of the lower edge of the partition 150 is connected to the cover plate 120, and the remaining portion of the lower edge of the partition 150 is connected to the circumferential surface of the distribution member 140.

The distribution member 140 and the partitioning member 150 can thereby perform initial distribution of the solid fuel more uniformly, and the partitioning member 150 can perform flow restriction of the solid fuel flowing to each of the distribution holes 121 more effectively, so as to further reduce fluctuation in the flow rate of the solid fuel flowing to the distribution holes 121 due to mixing of the initially distributed solid fuel in the tangential direction of the main pipe 110 (the expanded section 115).

Preferably, an inner end of a first rim of the partition 150, an inner end of a second rim of the partition 150, which is opposite to the first rim, and a top end of the dispensing member 140 coincide. Specifically, the first edge is a lower edge of the separator 150, and the second edge is an upper edge of the separator 150. Thereby making the structure of the solid fuel dispenser 100 more rational.

As shown in fig. 4, the second edge of the partition 150 is configured to be streamlined as being recessed toward the cover plate 120. It is possible to prevent the separator 150 from having an edge whose structure is abruptly changed, so that generation of eddy current can be prevented. Wherein, when the second edge of the partition member 150 is viewed from the top down, the second edge of the partition member 150 is recessed toward the cap plate 120, i.e., the second edge of the partition member 150 is recessed downward. When the second edge of the partition member 150 is viewed from below to above, the second edge of the partition member 150 protrudes toward the cover plate 120, that is, the second edge of the partition member 150 protrudes downward.

Preferably, as shown in fig. 4, the cover plate 120 may have a plurality of distribution portions 122 recessed in a direction away from the feed opening 111, the plurality of distribution portions 122 being provided at intervals in the circumferential direction of the main pipe 110, each distribution portion 122 being provided with one distribution hole 121. This makes it possible to make the periphery of the distribution hole 121 higher than the distribution hole 121, thereby preventing solid fuel from accumulating around the distribution hole 121 and not flowing.

Wherein the distribution portion 122 is recessed downward when the cover plate 120 is viewed from above. When the cover plate 120 is viewed from below to above, the distribution portion 122 protrudes downward.

Preferably, the dispensing hole 121 may be located at the bottom of the dispensing part 122. Thereby, accumulation of solid fuel around the distribution holes 121 without flowing can be further prevented. The portion of the cover plate 120 between the adjacent two distribution parts 122 may constitute a partition 150. Thereby making the structure of the solid fuel dispenser 100 more rational.

The invention also provides a gasification furnace. The gasification furnace according to the embodiment of the invention comprises a furnace body and the burner 1 according to the above embodiment of the invention, wherein the burner 1 is arranged on the furnace body.

Therefore, the gasification furnace provided by the embodiment of the invention has the advantages of low manufacturing cost, low operation cost and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A burner (1), characterized in that it comprises:

a body (200), the body (200) having a plurality of first mounting channels;

a plurality of oxygen-containing gas tubes (300) provided in the first installation channels in a one-to-one correspondence, each of the oxygen-containing gas tubes (300) having an oxygen-containing gas channel (310), a solid fuel channel (221) having a circular cross-sectional shape being defined between a wall surface of each of the first installation channels and the corresponding oxygen-containing gas tube (300), outlet end portions (2211) of the solid fuel channels (221) being configured in a constricted shape, wherein a center line of each of the outlet end portions (2211) intersects a center line of the corresponding oxygen-containing gas channel (310) at a point so as to form impact points, each of the impact points being spaced apart from an end surface (212) of the body (200) adjacent to the outlet end portion (2211) by a first distance, the center line of the outlet end portion (2211) intersecting the end surface (212) at the first point, the center line of the corresponding oxygen-containing gas channel (310) intersects the end face (212) at a second point, the first point is separated from the second point by a second distance, wherein the ratio of the first distance to the second distance is greater than or equal to 1 and less than or equal to 10, and oxygen-containing gas and solid fuel are introduced into the gasification chamber through the corresponding oxygen-containing gas channel (310) and the solid fuel channel (221) to collide and combust to form flat flame and generate gasification reaction; and

a solid fuel dispenser (100), the solid fuel dispenser (100) comprising:

a main pipe (110), wherein the main pipe (110) is provided with a feeding hole (111) and a discharging hole (112); and

the cover plate is arranged on the main pipe (110) and covers the discharge hole (112), a plurality of distribution holes (121) are formed in the cover plate, and the distribution holes (121) are communicated with the solid fuel channels (221) in a one-to-one correspondence mode.

2. A burner (1) according to claim 1, characterized in that said body (200) comprises:

a main body (210), said main body (210) having a plurality of said first mounting channels; and

a plurality of solid fuel pipes (220), a plurality of the solid fuel pipes (220) being disposed in a one-to-one correspondence within a plurality of the first installation channels, wherein a plurality of the oxygen containing gas pipes (300) is disposed in a one-to-one correspondence within a plurality of the solid fuel pipes (220), the solid fuel pipes (220) and the respective oxygen containing gas pipes (300) defining the solid fuel channels (221),

preferably, each of the solid fuel pipes (220) has a first straight section (222), a second straight section (223) and an arc-shaped transition section (224), the first straight section (222) and the second straight section (223) are connected by the transition section (224), a portion of each of the first straight sections (222) is disposed in the corresponding first installation passage, a plurality of the oxygen-containing gas pipes (300) are disposed in the first straight sections (222) in a one-to-one correspondence, each of the first straight sections (222) defines the solid fuel passage (221) with the corresponding oxygen-containing gas pipe (300), a plurality of the distribution holes (121) communicate with the second straight sections (223) in a one-to-one correspondence, preferably, each of the first straight sections (222) and the corresponding oxygen-containing gas pipe (300) are coaxially disposed,

preferably, each of the oxygen-containing gas tubes (300) comprises a third straight section (320) and a fourth straight section (330), the third straight section (320) being connected to the fourth straight section (330), wherein the third straight section (320) is provided within the corresponding first straight section (222), each of the first straight sections (222) and the corresponding third straight section (320) define the solid fuel channel (221) therebetween, a centerline of the corresponding third straight section (320) intersects the end face (212) at the second point,

more preferably, an end portion (321) of each of the third straight sections (320) remote from the gas outlet of the oxygen-containing gas channel (310) is configured in a conical shape, more preferably, each of the first straight sections (222) and the corresponding third straight section (320) are coaxially arranged,

preferably, a ratio of the first distance to the second distance is equal to or greater than 3 and equal to or less than 6,

preferably, a plurality of swirl plates are arranged on the part, adjacent to the discharge hole of the solid fuel channel (221), of each first straight section (222), and more preferably, the included angle between each swirl plate and the horizontal plane is 25-45 degrees;

preferably, the body (200) further has an ignition channel (231), a plurality of the solid fuel channels (221) and a plurality of the oxygen-containing gas channels (310) are disposed around the ignition channel (231), and more preferably, the body (200) further includes a squib (230), the main body (210) has a second mounting channel, wherein the squib (230) is disposed in the second mounting channel, and the squib (230) has the ignition channel (231);

preferably, the body (200) has a plurality of heat exchange channels (211), the plurality of heat exchange channels (211) are fitted with the plurality of solid fuel channels (221) and the plurality of oxygen-containing gas channels (310) in a one-to-one correspondence, and each heat exchange channel (211) surrounds the corresponding solid fuel channel (221) and the corresponding oxygen-containing gas channel (310).

3. The burner (1) according to claim 1, characterized in that the main pipe (110) has a convergent section, a constant section and an divergent section in succession, wherein the convergent section is adjacent to the inlet (111) and the divergent section is adjacent to the outlet (112), the cross-sectional area of the convergent section decreases in the direction from the inlet (111) to the outlet (112), the cross-sectional area of the constant section is constant in the direction from the inlet (111) to the outlet (112), and the cross-sectional area of the divergent section increases in the direction from the inlet (111) to the outlet (112).

4. A burner (1) according to claim 3, characterized in that the main tube (110) has a circular cross-section, the constant section (114) is cylindrical and each of the convergent section (113) and the divergent section (115) has a truncated cone shape, preferably the ratio between the maximum cross-sectional area and the minimum cross-sectional area of the convergent section (113) is 1.05-4.5:1, the ratio between the maximum cross-sectional area and the minimum cross-sectional area of the divergent section (115) is 1.1-5:1, more preferably the ratio between the maximum cross-sectional area and the minimum cross-sectional area of the convergent section (113) is 1.25-2:1 and the ratio between the maximum cross-sectional area and the minimum cross-sectional area of the divergent section (115) is 1.5-2.5: 1.

5. The burner (1) according to claim 3, wherein the solid fuel distributor (100) further comprises a purge pipe (130), the purge pipe (130) is sleeved on the main pipe (110), the purge pipe (130) is opposite to at least one of the contraction section (113), the constant section (114) and the expansion section (115) in the radial direction of the main pipe (110), wherein an annular purge cavity (131) is formed between the purge pipe (130) and the main pipe (110), a purge gas inlet (132) communicated with the purge cavity (131) is arranged on the purge pipe (130), a through hole communicated with the purge cavity (131) is arranged on the wall surface of the at least one of the contraction section (113), the constant section (114) and the expansion section (115), preferably, the solid fuel distributor (100) further comprises a filter layer (133), the filter layer (133) is provided between the purge gas inlet (132) and the through-hole.

6. A burner (1) according to claim 3, wherein the angle between the center line of each distribution hole (121) and the center line of the main pipe (110) is greater than or equal to 2 degrees and less than or equal to 60 degrees, preferably, the angle between the center line of each distribution hole (121) and the center line of the main pipe (110) is greater than or equal to 20 degrees and less than or equal to 45 degrees, preferably, the sum of the cross-sectional areas of a plurality of distribution holes (121) is greater than or equal to the cross-sectional area of the feed opening (111), and preferably, a plurality of distribution holes (121) are provided on the cover plate (120) at equal intervals in the circumferential direction of the main pipe (110).

7. A burner (1) according to any one of claims 3 to 6, characterized in that the solid fuel distributor (100) further comprises a distributor piece (140), the distributor piece (140) being provided on the cover plate (120), the distributor piece (140) being located within the main pipe (110), wherein the cross-sectional area of the distributor piece (140) increases in the direction from the inlet opening (111) to the outlet opening (112) of the main pipe (110), preferably the distributor piece (140) is conical or pyramidal, preferably the centre line of the distributor piece (140) is at a distance from the centre line of the main pipe (110) in the horizontal direction which is less than or equal to a second predetermined value, more preferably the centre line of the distributor piece (140) coincides with the centre line of the main pipe (110).

8. The burner (1) according to claim 3 or 7, characterized in that a partition (150) is arranged between two adjacent distribution holes (121), the partition (150) is arranged on the cover plate (120), the partition (150) extends from the cover plate (120) to the direction adjacent to the feed opening (111), preferably, the partition (150) is a plurality of partitions (150), the plurality of partitions (150) are arranged at equal intervals along the circumference of the main pipe (110), and more preferably, the inner ends of the plurality of partitions (150) are connected with each other.

9. Burner (1) according to claim 8, characterized in that a portion of the first edge of the partition (150) is connected to the cover plate (120) and the remaining portion of the first edge of the partition (150) is connected to the periphery of the distribution member (140), preferably the inner end of the first edge of the partition (150), the inner end of the second edge of the partition (150) and the top end of the distribution member (140) coincide, the first edge being opposite to the second edge, more preferably the second edge of the partition (150) is configured as a streamline concave towards the cover plate (120).

10. A burner (1) according to claim 8, wherein the cover plate (120) has a plurality of distribution portions (122) recessed in a direction away from the feed opening (111), the plurality of distribution portions (122) are provided at intervals in the circumferential direction of the main tube (110), each distribution portion (122) is provided with one distribution hole (121), preferably, a portion of the cover plate (120) located between two adjacent distribution portions (122) constitutes the partition (150), and more preferably, the distribution hole (121) is located at the bottom of the distribution portion (122).

11. A gasification furnace, comprising:

a furnace body; and

the burner (1), the burner (1) is the burner (1) according to any one of claims 1 to 10, wherein the burner (1) is arranged on the furnace body.