CN111349467A

CN111349467A - Burner, feeding device, gasification furnace and gasification system

Info

Publication number: CN111349467A
Application number: CN201811581724.4A
Authority: CN
Inventors: 索娅; 刘臻; 安海泉; 冯子洋; 方薪晖; 李烨; 彭宝仔
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

Abstract

The invention discloses a burner, a feeding device with the burner, a gasification furnace and a gasification system. The burner comprises: a body; and a plurality of oxygen-containing gas tubes provided in the plurality of first installation channels, a solid fuel channel defined between each first installation channel and the oxygen-containing gas tube, a center line of an outlet end of the solid fuel channel intersecting a center line of the oxygen-containing gas channel at a collision point, the collision point being spaced apart from the end face of the body by a first distance, the outlet end and the center line of the oxygen-containing gas channel intersecting the end face at a first point and a second point, the first point being spaced apart from the second point by a second distance, wherein a ratio of the first distance to the second distance is 1 or more and 10 or less. 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 gasification furnace is reduced, the volume of the gasification furnace is reduced, the manufacturing cost of the gasification furnace is reduced, and the operation cost of the gasification furnace is reduced.

Description

Burner, feeding device, gasification furnace and gasification system

Technical Field

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

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, a feeding device with the burner, a gasification furnace and a gasification system.

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; and a plurality of oxygen-containing gas pipes provided in the plurality of first installation channels in a one-to-one correspondence, each of the oxygen-containing gas pipes having an oxygen-containing gas channel, a solid fuel channel having a circular cross-section defined between a wall surface of each of the first installation channels and the corresponding oxygen-containing gas pipe, an outlet end 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, the impingement point 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, an oxygen-containing gas and a solid fuel are introduced into the gasification chamber through the corresponding oxygen-containing gas channel and the corresponding solid fuel channel to collide and combust to form flat flame and generate gasification reaction, and preferably, each solid fuel channel and the corresponding oxygen-containing gas channel are coaxially arranged.

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 in the plurality of first installation passages, each of the solid fuel pipes being adapted to be connected to a canister by a pipe or adapted to be directly connected to a canister, wherein a plurality of the oxygen-containing gas pipes are disposed in a one-to-one correspondence in the plurality of solid fuel pipes, the solid fuel pipes defining the solid fuel passages with the respective oxygen-containing gas pipes.

Preferably, each of the solid fuel pipes has a first straight section, a second straight section and a connecting section, the first straight section and the second straight section are connected by the connecting section, wherein a portion of each of the first straight sections is disposed in the corresponding first installation passage, a plurality of the oxygen-containing gas pipes are disposed in the first straight sections in a one-to-one correspondence, each of the second straight sections is adapted to be connected to a hair canister by a pipeline, each of the first straight sections defines the solid fuel passage with the corresponding oxygen-containing gas pipe, preferably, each of the first straight sections and the corresponding oxygen-containing gas pipe are disposed coaxially, preferably, each of the oxygen-containing gas pipes includes a third straight section and a fourth straight section, the third straight section is connected to the fourth straight section, wherein the third straight section is disposed in the corresponding first straight section, and each of the first straight sections defines the solid fuel passage with the corresponding third straight section, the central line of the corresponding third straight section intersects with the end face at the second point, 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, more preferably, the end of each third straight section, which is far away from the gas outlet of the oxygen-containing gas channel, is configured to be conical, more preferably, each first straight section and the corresponding third straight section are coaxially arranged, preferably, a plurality of swirl plates are arranged on the part, adjacent to the discharge port of the solid fuel channel, of each first straight section, and more preferably, the included angle between each swirl plate and the horizontal plane is 25-45 degrees.

Preferably, the body further has an ignition channel, a plurality of the solid fuel channels and a plurality of the oxygen-containing gas channels are disposed around the ignition channel, and more preferably, the body further includes a squib, the main body has a second mounting channel, wherein the squib is disposed in the second mounting channel, the squib has the ignition channel, and preferably, the body has a plurality of heat exchange channels, which are fitted with the plurality of the solid fuel channels and the plurality of the oxygen-containing gas channels in a one-to-one correspondence, each of the heat exchange channels surrounds the corresponding solid fuel channel and the corresponding oxygen-containing gas channel.

A second aspect of the present invention provides a supply device comprising: the dispensing tank is provided with a plurality of discharge holes; and the burner is the burner according to the first aspect of the invention, wherein the plurality of solid fuel channels of the burner are communicated with the plurality of discharge ports in a one-to-one correspondence manner.

The feeding device provided by the embodiment of the invention has the advantages of stable discharging and uniform material distribution.

Preferably, the dispensing can comprises: the tank body is internally provided with an accommodating cavity; the fluidization plate is arranged in the containing cavity so as to divide the containing cavity into a solid fuel cavity and a fluidization cavity, the fluidization cavity is positioned below the solid fuel cavity and is communicated with the solid fuel cavity, a plurality of through holes are formed in the side wall surface of the solid fuel cavity, and an air inlet is formed in the wall surface of the fluidization cavity; and a plurality of discharge pipes, a plurality of first parts of which pass through a plurality of through holes in a one-to-one correspondence manner and extend into the solid fuel cavity, wherein a plurality of discharge ports of the discharge pipes are communicated with a plurality of solid fuel channels in a one-to-one correspondence manner, preferably, the distance between a feed port of the discharge pipe and the upper surface of the fluidization plate in the vertical direction is less than or equal to a second preset value and greater than or equal to a third preset value, preferably, the peripheral edge of the fluidization plate is connected with the side wall surface of the containing cavity, a plurality of through holes are formed in the fluidization plate, the solid fuel cavity is communicated with the fluidization cavity through the plurality of through holes, and more preferably, the fluidization plate is a sintered metal plate.

Preferably, the upper surface of the fluidization plate has a slope portion, an outer edge of the slope portion being located below an inner edge of the slope portion, preferably, the slope portion being opposite to the first portions of the plurality of discharge pipes in the inner and outer directions, more preferably, the upper surface of the fluidization plate is a conical surface, preferably, the fluidization plate includes a conical portion and a cylindrical portion, a lower surface of the conical portion being connected to an upper surface of the cylindrical portion, wherein a circumferential surface of the cylindrical portion is connected to a side wall surface of the receiving chamber, a circumferential surface of the conical portion constituting the slope portion, more preferably, the fluidization plate includes a circular table portion, a lower surface of the circular table portion being connected to an upper surface of the cylindrical portion, wherein a circumferential surface of the cylindrical portion is connected to a side wall surface of the receiving chamber, a circumferential surface of the circular table portion constituting the slope portion, preferably, the included angle between the inclined plane part and the horizontal plane is less than or equal to 20 degrees, and more preferably, the included angle between the inclined plane part and the horizontal plane is less than or equal to 15 degrees.

Preferably, the first portion of each of the discharging pipes comprises a vertical section, a lower port of the vertical section constitutes a feeding port of the discharging pipe, a length-diameter ratio of the vertical section is less than or equal to a fourth preset value, preferably, the fourth preset value is less than or equal to 2, more preferably, the fourth preset value is less than or equal to 1.7, most preferably, the fourth preset value is less than or equal to 1.3, preferably, each of the discharging pipes comprises a horizontal section, a transition section and the vertical section, a part of the horizontal section passes through the through hole and protrudes into the solid fuel cavity, an end of the part of the horizontal section is connected with an upper end of the vertical section through the transition section, preferably, a distance between a lower end face of the vertical section and an upper surface of the fluidization plate in the up-down direction is less than or equal to the second preset value and is greater than or equal to the third preset value, more preferably, the second preset value is 20 centimeters, further preferably, the second preset value is 10 centimeters, more preferably, the third preset value is 1 centimeter, and further preferably, the third preset value is 2 centimeters.

A third aspect of the present invention provides a gasification furnace, comprising: 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.

The gasification furnace provided by the embodiment of the invention has the advantage of long service life of the burner.

A fourth aspect of the present invention provides a gasification system comprising: a furnace body; and the feeding device is the feeding device according to the second aspect of the invention, wherein the burner of the feeding device is arranged on the furnace body.

The gasification system provided by the embodiment of the invention has the advantages of stable operation and uniform material distribution.

Drawings

FIG. 1 is a schematic diagram of a starter tank for a gasification system according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a starter tank for a gasification system according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a burner according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 6 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 10 according to an embodiment of the present invention is described below with reference to the drawings. As shown in fig. 3 to 6, the burner 10 according to the embodiment of the present invention includes a body 110 and a plurality of oxygen-containing gas pipes 140.

The body 110 has a plurality of first installation passages in which a plurality of oxygen-containing gas tubes 140 are provided in a one-to-one correspondence. In other words, the number of oxygen-containing gas tubes 140 is equal to the number of the first installation passages, and one oxygen-containing gas tube 140 is provided in one of the first installation passages.

Each oxygen-containing gas pipe 140 has an oxygen-containing gas channel 141, i.e., each oxygen-containing gas channel 141 is located in the corresponding first installation channel. That is, a plurality of oxygen-containing gas channels 141 are located in a one-to-one correspondence in a plurality of the first installation channels.

The solid fuel channel 121 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 140, that is, the solid fuel channel 121 is defined between each of the first installation channels and the oxygen-containing gas pipe 140 located therein.

The outlet end 1211 of the solid fuel channel 121 is configured to be constricted. That is, the outer diameter (inner diameter) of the outlet end 1211 decreases in a direction adjacent to the outlet of the solid fuel passage 121. For example, the outer diameter (inner diameter) of the outlet end 1211 decreases in the direction from top to bottom.

The center line of each outlet end 1211 intersects the center line of the corresponding oxygen-containing gas channel 141 (the oxygen-containing gas channel 141 located inside the outlet end 1211) at a point to form an impact point P, which is spaced apart from the end surface 113 of the body 110 adjacent to the outlet end 1211 by a first distance S1, i.e., the distance of the impact point P from the end surface 113 of the body 110 is the first distance S1.

The end surface 113 of the body 110 is also adjacent to the outlet of the oxygen-containing gas channel 141. In other words, the outlet of the oxygen-containing gas channel 141 and the outlet of the solid fuel channel 121 are both open on the end face 113.

The center line of the outlet end 1211 intersects the end surface 113 at a first point, and the center line of the corresponding oxygen-containing gas channel 141 intersects the end surface 113 at a second point, the first point being spaced apart from the second point by a second distance S2, i.e., the first point is spaced apart from the second point by the second distance S2. Wherein, the ratio of the first distance S1 to the second distance S2 is more than or equal to 1 and less than or equal to 10, and the oxygen-containing gas and the solid fuel are introduced into the gasification chamber through the corresponding oxygen-containing gas channel 141 and the solid fuel channel 121 to collide and combust to form flat flame and generate gasification reaction.

Since the solid fuel passage 121 has a circular cross section, the outlet end 1211 has a circular ring shape, that is, the cross section of the outlet end 1211 has a circular ring shape. The outlet end 1211 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 140, and the outer circumferential wall surface may be a part of the wall surface of the first mounting passage.

Wherein the distance between the intermediate surface and the inner peripheral wall surface in the radial direction of the outlet end 1211 is equal to the distance between the intermediate surface and the outer peripheral wall surface in the radial direction of the outlet end 1211. The intermediate plane intersects a plane passing through the center line of the oxygen-containing gas channel 141 at a first straight line L1 and a second straight line L2. Each of the first and second lines L1 and L2 may be centerlines of the outlet end 1211.

The solid fuel channel 121 and the oxygen-containing gas pipe 140 (oxygen-containing gas channel 141) located therein may constitute one process burner part, and therefore the burner 10 according to the embodiment of the present invention has a plurality of such process burner parts, i.e., the burner 10 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 10 according to 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 10. This reduces the peak temperature value and thus prolongs the service life of the burner 10.

Since the center line of each outlet end 1211 intersects the center line of the corresponding oxygen-containing gas channel 141 at a point so as to form the impingement point P, the solid fuel (e.g., pulverized coal) injected from each solid fuel channel 121 and the oxygen-containing gas injected from the corresponding oxygen-containing gas channel 141 collide below the burner 10 (when the burner 10 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 10 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 furnaces with burners 10 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 10 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 10 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 10 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 10 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 140 are located within the solid fuel channels 121, a "coal-on-gas" feed may be formed. The "coal-in-gas" feeding manner not only helps to adjust the flame length, but also can rapidly disperse the solid fuel (e.g., pulverized coal) supplied from the solid fuel passage 121 by using the oxygen-containing gas supplied from the oxygen-containing gas pipe 140, so that the temperature distribution of the high-temperature region of the gasifier can be more uniform, i.e., the temperature distribution near the burner 10 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 each flame has a length of about 5 to 30 times, preferably about 10 to 20 times, the first distance S1 and a diameter of about 2 to 3 times the second distance S2, such that the flame emitted by the burner 10 according to embodiments 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.

Therefore, the burner 10 according to the embodiment of the present invention has the advantages of long service life, and the like, and the gas-solid mixing rate can be enhanced by the burner 10 according to the embodiment of the present 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 operating cost of the gasifier is reduced.

As shown in fig. 3-6, in some embodiments of the invention, the burner 10 may include a body 110 and a plurality of oxygen-containing gas tubes 140, the body 110 including a main body 111 and a plurality of solid fuel tubes 120.

The main body 111 has a plurality of the first installation passages, and a plurality of solid fuel pipes 120 are provided in the plurality of the first installation passages in a one-to-one correspondence, each of the solid fuel pipes 120 having a solid fuel passage 121. That is, the number of first mounting passages may be equal to the number of solid fuel pipes 120, one solid fuel pipe 120 being mounted within one of the first mounting passages. The end face 113 of the body 110 adjacent the outlet end 1211 is also the end face of the main body 111 adjacent the outlet end 1211.

Wherein the plurality of oxygen-containing gas pipes 140 are disposed in the plurality of solid fuel pipes 120 in a one-to-one correspondence, and the solid fuel passages 121 are defined between the solid fuel pipes 120 and the corresponding oxygen-containing gas pipes 140 (the oxygen-containing gas pipes 140 located in the solid fuel pipes 120).

In addition, the body 110 may also have a plurality of solid fuel tubes 120. A plurality of the solid fuel pipes 120 are provided in a one-to-one correspondence in a plurality of the first installation passages, each of the solid fuel pipes 120 having a solid fuel passage 121, and an oxygen-containing gas passage 141 having a circular cross section is defined between a wall surface of each of the first installation passages and the corresponding solid fuel pipe 120.

Each solid fuel tube 120 is adapted to be connected to the hair canister 20 by a pipe or is adapted to be directly connected to the hair canister 20. In other words, each solid fuel pipe 120 is connected to the dispensing canister 20 through a pipe or is adapted to be directly connected to the dispensing canister 20 when the burner 10 is in use or when the burner 10 is assembled with other components (devices).

Preferably, each solid fuel channel 121 and the corresponding oxygen-containing gas channel 141 (oxygen-containing gas pipe 140) are coaxially arranged, that is, each solid fuel channel 121 and the oxygen-containing gas channel 141 (oxygen-containing gas pipe 140) therein are coaxially arranged. In other words, with respect to the solid fuel channel 121 and the oxygen-containing gas channel 141 (oxygen-containing gas pipe 140) located therein, the center line of the solid fuel channel 121 coincides with the center line of the oxygen-containing gas channel 141 (center line of the oxygen-containing gas pipe 140). This makes the construction of the burner 10 more rational.

As shown in fig. 4 and 5, in one embodiment of the invention, each solid fuel tube 120 includes a first straight section 122, a second straight section 123, and a connecting section 124, and the first straight section 122 and the second straight section 123 are connected by the connecting section 124. Specifically, a first end of connecting section 124 is connected to a first end of first straight section 122, a second end of connecting section 124 is connected to a first end of second straight section 123, a second end of second straight section 123 is a feed end of solid fuel pipe 120, and a second end of first straight section 122 is a discharge end of solid fuel pipe 120. Each second straight section 123 is adapted to be connected to a hair-dispensing canister by means of a pipe.

When the burner 10 is in a use state or after being installed, that is, when the burner 10 is installed on the furnace body of the gasification furnace, the lower end of the connecting section 124 is connected to the upper end of the first straight section 122, the upper end of the connecting section 124 is connected to the first end of the second straight section 123, the second end of the second straight section 123 is the feeding end of the solid fuel pipe 120, the lower end of the first straight section 122 is the discharging end of the solid fuel pipe 120, and the lower end of the solid fuel passage 121 is the outlet end 1211.

When the burner 10 is in use or after being installed, the first straight section 122 may be vertically disposed, the second straight sections 123 may be horizontally disposed, and each second straight section 123 is connected to the dispensing tank through a pipeline.

Wherein a portion of each first straight section 122 is disposed in the corresponding first installation channel, and the plurality of oxygen-containing gas pipes 140 are disposed in the plurality of first straight sections 122 in a one-to-one correspondence. Each first straight section 122 defines a solid fuel channel 121 with a corresponding oxygen containing gas tube 140 (the oxygen containing gas tube 140 located inside the first straight section 122). Thereby making the results of solid fuel pipe 120 more reasonable.

Preferably, each first straight section 122 and the corresponding oxygen containing gas pipe 140 are coaxially arranged, i.e., each first straight section 122 and the oxygen containing gas pipe 140 disposed therein are coaxially arranged. That is, for the first straight section 122 and the oxygen containing gas pipe 140 provided therein, the center line of the first straight section 122 and the center line of the oxygen containing gas pipe 140 coincide. This makes the construction of the burner 10 more rational.

As shown in fig. 5, each oxygen containing gas tube 140 includes a third straight section 142 and a fourth straight section 143, the third straight section 142 being connected to the fourth straight section 143, the third straight section 142 being provided in the corresponding first straight section 122. That is, for the solid fuel pipe 120 and the oxygen containing gas pipe 140 disposed therein, the third straight section 142 of the oxygen containing gas pipe 140 is disposed within the first straight section 122 of the solid fuel pipe 120.

Each first straight section 122 defines a solid fuel passage 121 with a corresponding third straight section 142 (the third straight section 142 located inside the first straight section 122), and the centerline of the corresponding third straight section 142 intersects the end face 113 at the second point. This makes the construction of the burner 10 more rational. When the burner 10 is in use or after installation, the third straight section 142 may be arranged vertically and the fourth straight section 143 may be arranged 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 the burner 10 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 141 may be about 70m/s, and the fluid velocity of the solid fuel at the outlet of the solid fuel channel 121 may be about 8 m/s.

Each first straight section 122 comprises a vertical section and a converging section, to which it is connected, which defines, with the third straight section 142 on the inside thereof, an outlet end 1211. 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 113 of the body 110, 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 10.

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 10 comprises a plurality of process burner portions, there are a plurality of impact points P when the burner 10 is operating, and the plurality of impact points P are substantially located on the same plane, so as to facilitate the formation of what is referred to as a flat flame.

Preferably, each first straight section 122 and the corresponding third straight section 142 are coaxially arranged, that is, each first straight section 122 and the third straight section 142 arranged therein are coaxially arranged. That is, for the first straight section 122 and the third straight section 142 provided therein, the center line of the first straight section 122 and the center line of the third straight section 142 coincide, the first straight section 122 defines the first portion of the solid fuel channel 121, the third straight section 142 defines the first portion of the oxygen-containing gas channel 141, and the center line of the first portion of the solid fuel channel 121 and the center line of the first portion of the oxygen-containing gas channel 141 coincide. This makes the construction of the burner 10 more rational.

As shown in fig. 5, an end 144 of each third straight section 142 away from the gas outlet of the oxygen-containing gas channel 141 is configured to be conical, that is, an end 144 of the third straight section 142 away from the discharge port of the solid fuel channel 121 is configured to be conical.

Since the third straight section 142 is provided in the first straight section 122, a part of the solid fuel passage 121 is occupied by the third straight section 142. That is, a portion of the solid fuel passage 121 is defined between the first straight section 122 and the third straight section 142, i.e., a space (gap) between the first straight section 122 and the third straight section 142 constitutes the portion of the solid fuel passage 121.

By configuring the end 144 of the third straight section 142 away from the gas outlet of the oxygen-containing gas channel 141 to be conical, the solid fuel in the solid fuel channel 121 can be divided by the end 144 of the third straight section 142, so that the solid fuel can be uniformly distributed in the portion of the solid fuel channel 121, that is, the solid fuel can be uniformly distributed in the space between the first straight section 122 and the third straight section 142.

When the burner 10 is in use or after being installed, the upper end of the third straight section 142 is conical, the lower port of the oxygen-containing gas channel 141 (the lower port of the third straight section 142) forms an air outlet of the oxygen-containing gas channel 141, and the lower port of the solid fuel channel 121 (the lower port of the solid fuel pipe 120) forms an outlet of the solid fuel channel 121.

Preferably, a plurality of swirl plates are provided on a portion of each first straight section 122 adjacent to the discharge port of the solid fuel passage 121. 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. 4 and 5, the body 110 further has a firing channel 131, and a plurality of solid fuel channels 121 and a plurality of oxygen-containing gas channels 141 are disposed around the firing channel 131. By providing the ignition passage 131, rapid switching of the supply of raw materials 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 131 may include coaxially disposed inner and outer rings through one of which oxidant may enter the gasifier and through the other of which fuel may enter the gasifier.

Specifically, the body 110 further includes a squib 130, and the main body 111 has a second installation passage in which the squib 130 is provided, and the squib 130 has a firing passage 131. This makes the construction of the burner 10 more rational.

As shown in fig. 4 and 5, the body 110 (main body 111) has a plurality of heat exchange channels 211, the plurality of heat exchange channels 211 are fitted with the plurality of solid fuel channels 121 and the plurality of oxygen-containing gas channels 141 in a one-to-one correspondence, and each heat exchange channel 211 surrounds the corresponding solid fuel channel 121 and the corresponding oxygen-containing gas channel 141 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 110 (main body 111), thereby making it possible to make the structure of the burner 10 simpler.

The invention also provides a feeding device. The feeding device according to the embodiment of the present invention includes the feed can 20 and the burner 10 according to the above-described embodiment of the present invention. The material dispensing tank 20 has a plurality of discharge ports, and the plurality of solid fuel passages 121 of the burner 10 are communicated with the plurality of discharge ports in a one-to-one correspondence manner.

As shown in fig. 1 and 2, in some examples of the invention, the hair spray tank 20 includes a tank body 210, a fluidization plate 220, and a plurality of discharge pipes 230. The vessel 210 has a receiving chamber 211 therein, and a fluidization plate 220 is provided in the receiving chamber 211 to divide the receiving chamber 211 into a solid fuel chamber 212 and a fluidization chamber 213. The fluidization chamber 213 is located below the solid fuel chamber 212, and the fluidization chamber 213 communicates with the solid fuel chamber 212.

Wherein, a plurality of through holes are arranged on the side wall surface of the solid fuel cavity 212, and an air inlet 214 is arranged on the wall surface of the fluidization cavity 213. The first parts of the discharging pipes 230 correspondingly penetrate through the through holes and extend into the solid fuel cavity 212, and the discharging holes of the discharging pipes 230 correspondingly communicate with the solid fuel channels 121. That is, the number of tappets 230 may be equal to the number of via holes through which the first portion of a tapper 230 passes; the number of discharge pipes 230 may be equal to the number of solid fuel passages 121, and the discharge port of one discharge pipe 230 communicates with one solid fuel passage 121.

For the lower discharging mode, the discharging port is arranged at the bottom of the material sending tank, and under the action of the pressure in the tank and the self gravity of materials (such as solid fuel), the pressure at the material sending port at the bottom of the material sending tank is large, so that the materials at the bottom of the material sending tank are easy to harden and compact, unstable discharging and even interruption are caused, and further the unplanned shutdown of the gasification furnace is caused.

For the upper discharging mode, the flow velocity of the materials is continuously reduced in the vertical upward process of the materials under the action of the gravity of the materials, and the problem of intermittent discharging is easily caused by material blockage.

The operation of the hair spray canister 20 according to an embodiment of the present invention will now be described with reference to fig. 1 and 2.

The fluidizing air enters the fluidizing chamber 213 through the air inlet 214 and further enters the solid fuel chamber 212. The solid fuel (e.g., pulverized coal particles) enters the solid fuel cavity 212 and flows downward within the solid fuel cavity 212 under its own weight. The fully fluidized solid fuel enters the discharge pipe 230.

Since the solid fuel chamber 212 is located above the fluidizing chamber 213, the fluidizing air blows the solid fuel upward, whereby the solid fuel in the solid fuel chamber 212 can be prevented from being compacted, and thus, discharge instability and discharge interruption can be prevented.

Since the first portion of the tapping pipe 230 passes through the sidewall surface of the solid fuel chamber 212 so as to protrude into the solid fuel chamber 212, the solid fuel is discharged (out of the solid fuel chamber 212) in a substantially horizontal (approximately horizontal) direction. Therefore, the flow velocity of the solid fuel can be prevented from continuously decreasing under the action of the gravity of the solid fuel, so that the solid fuel can be prevented from being blocked, and the problem of intermittent discharging can be solved.

Since the solid fuel is equally stressed in the horizontal direction, the solid fuel is easily introduced into the plurality of discharging pipes 230 in the form of a suspended flow. Therefore, not only can the solid fuel be stably output, but also the flow rate of the solid fuel of each discharging pipe 230 can be prevented from being unequal, that is, the solid fuel can uniformly enter the discharging pipes 230, so that the solid fuel can be uniformly distributed.

According to the dispensing can 20 of the embodiment of the present invention, the plurality of discharging pipes 230 are disposed to penetrate through the side wall surface of the solid fuel cavity 212, and the solid fuel cavity 212 is located above the fluidizing cavity 213, so that not only the solid fuel in the solid fuel cavity 212 can be prevented from being compacted, but also the flow rate of the solid fuel can be prevented from being reduced and the solid fuel can be prevented from being unevenly distributed. Therefore, the problems of unstable discharging and interrupted discharging can be avoided, and the intermittent discharging problem can be eliminated.

Therefore, the feeding device and the dispensing tank 20 according to the embodiment of the invention have the advantages of stable discharging, uniform dispensing and the like.

Preferably, the discharge port (discharge end) of the discharge pipe 230 is connected to the feed port (feed end) of the solid fuel pipe 120 through a horizontally disposed pipe. That is, a first end of the pipe is connected to the discharge port (discharge end) of the discharge pipe 230, and a second end of the pipe is connected to the feed port (feed end) of the solid fuel pipe 120.

Preferably, as shown in fig. 2, the fluidizing chamber 213 is provided with an air inlet 214 on a side wall surface thereof. A plurality of the via holes are provided on the side wall surface of the solid fuel cavity 212 at equal intervals in the circumferential direction of the solid fuel cavity 212.

The distance between the feed inlet of the discharge pipe 230 and the upper surface 221 of the fluidization plate 220 in the vertical direction is less than or equal to the second preset value and greater than or equal to the third preset value. By setting the distance between the inlet opening of the discharge pipe 230 and the upper surface 221 of the fluidization plate 220 in the vertical direction to be greater than or equal to the third predetermined value, a sufficient space between the discharge pipe 230 and the fluidization plate 220 can be provided for accommodating the solid fuel.

The distance between the feed inlet of the discharge pipe 230 and the upper surface 221 of the fluidization plate 220 in the vertical direction is smaller than or equal to the second preset value, so that the fully fluidized solid fuel can rapidly enter the discharge pipe 230, and further can rapidly enter the substantially horizontally arranged part of the discharge pipe 230, that is, the solid fuel can enter the substantially horizontally arranged part of the discharge pipe 230 at a flow rate higher than the settling velocity, so that the stability of conveying the solid fuel can be improved, and the discharge stability of the material sending tank 20 can be further improved.

Wherein, the distance between the feed inlet of the discharge pipe 230 and the upper surface 221 of the fluidization plate 220 in the vertical direction is: the inlet opening of the outlet pipe 230 is located opposite a first part of the upper surface 221 of the fluidization plate 220 in the vertical direction, and the distance between the inlet opening of the outlet pipe 230 and this first part of the upper surface 221 of the fluidization plate 220 in the vertical direction is the distance between the inlet opening of the outlet pipe 230 and the upper surface 221 of the fluidization plate 220 in the vertical direction.

As shown in fig. 2, the fluidizing plate 220 has a peripheral edge connected to a side wall surface of the accommodating chamber 211, and the fluidizing plate 220 is provided with a plurality of through holes (not shown) through which the solid fuel chamber 212 communicates with the fluidizing chamber 213. Thereby, the fluidizing wind can be uniformly introduced into the solid fuel cavity 212 by uniformly providing a plurality of the through holes on the fluidizing plate 220, so that the solid fuel in the solid fuel cavity 212 can be more sufficiently fluidized and uniformly distributed.

Preferably, the fluidization plate 220 may be a sintered metal plate. The pore size of the sintered metal sheet may be 1/3-2/3 of the average particle size of the solid fuel, thereby ensuring that the solid fuel enters the fluidization chamber and does not clog the sintered metal sheet.

In one embodiment of the present invention, as shown in fig. 2, the upper surface 221 of the fluidization plate 220 has a beveled portion with an outer edge located below an inner edge of the beveled portion. That is, the slope portion is inclined downward in the inward-outward direction. Wherein, the direction near the middle of the accommodating cavity 211 is inward, and the direction far away from the middle of the accommodating cavity 211 is outward.

By providing the upper surface 221 of the fluidization plate 220 with the slope portion, the solid fuel can be caused to flow downward and outward along the slope portion, i.e., toward the side wall surface of the solid fuel chamber 212, by its own weight. This improves the fluidity of the solid fuel, and makes the solid fuel more sufficiently fluidized, thereby making it easier for the solid fuel to enter the discharge pipe 230.

Preferably, the slope part is opposite to the first portion of the plurality of discharging pipes 230 in the inner and outer directions. This makes it easier for the solid fuel to enter the tapping pipe 230. Wherein the inward and outward directions are indicated by arrows D in fig. 2.

Preferably, the included angle between the inclined plane part and the horizontal plane is more than 0 degree and less than or equal to 20 degrees. More preferably, the included angle between the inclined surface part and the horizontal plane is greater than 0 degree and less than or equal to 15 degrees. This further increases the flowability of the solid fuel, prevents the solid fuel from depositing on the fluidization plate 220, and fluidizes the solid fuel more sufficiently, so that the solid fuel can more easily enter the discharge pipe 230.

In one particular example of the invention, the upper surface 221 of the fluidization plate 220 is a conical surface. As shown in fig. 2, the fluidization plate 220 includes a conical portion 222 and a cylindrical portion 223, and a lower surface of the conical portion 222 is connected to an upper surface of the cylindrical portion 223, i.e., the conical portion 222 is provided on the upper surface of the cylindrical portion 223. The circumferential surface of the cylindrical portion 223 is continuous with the side wall surface of the accommodation chamber 211, and the circumferential surface (side surface) of the conical portion 222 constitutes the inclined surface portion. The up-down direction is shown by arrow C in fig. 2 and 4.

Preferably, the edge (lower edge) of the conical portion 222 is flush with the edge of the cylindrical portion 223, so that the solid fuel can flow to the side wall surface of the solid fuel cavity 212, and thus the solid fuel can be more sufficiently fluidized, so that the solid fuel can be more easily introduced into the discharge pipe 230. Preferably, the included angle between the generatrix of the conical portion 222 and the horizontal plane is greater than 0 degree and equal to or less than 20 degrees. More preferably, an angle between a generatrix of the conical portion 222 and a horizontal plane is greater than 0 degrees and equal to or less than 15 degrees.

In another specific example of the present invention, the fluidization plate 220 includes a circular table portion and a cylindrical portion, and a lower surface of the circular table portion is connected to an upper surface of the cylindrical portion, i.e., the circular table portion is provided on the upper surface of the cylindrical portion. Wherein the peripheral surface of the cylindrical portion is connected to the side wall surface of the accommodation chamber 211, and the peripheral surface (side surface) of the circular truncated cone portion constitutes the inclined surface portion.

Preferably, the lower edge of the circular table portion is flush with the edge of the cylindrical portion, so that the solid fuel can flow to the side wall surface of the solid fuel chamber 212, and thus the solid fuel can be more sufficiently fluidized, so that the solid fuel can be more easily introduced into the discharge pipe 230. Preferably, the included angle between the generatrix of the circular truncated cone and the horizontal plane is greater than 0 degree and less than or equal to 20 degrees. More preferably, an included angle between a generatrix of the circular truncated cone portion and a horizontal plane is greater than 0 degree and equal to or less than 15 degrees.

As shown in fig. 2, the hair spray can 20 further includes a distribution boss 240, and the distribution boss 240 is provided at the middle of the upper surface 221 of the fluidization plate 220. Through the distribution boss 240, the solid fuel can be primarily distributed by the distribution boss 240, so that the solid fuel can be prevented from being accumulated in the middle of the fluidization plate 220, and the solid fuel can be more sufficiently fluidized.

Preferably, the upper surface of the material separating boss 240 is a portion of a spherical surface. The distributing boss 240 can be enabled to better perform preliminary distribution on the solid fuel.

As shown in fig. 2, in some examples of the invention, this first portion of the tapping pipe 230 comprises a vertical section 233, the lower mouth of the vertical section 233 constituting the feed inlet of the tapping pipe 230. Wherein the length-diameter ratio of the vertical section 233 is less than or equal to a fourth preset value. In particular, the vertical section 233 may be arranged vertically, i.e. the vertical section 233 may extend in a vertical direction, when the hair canister 20 is in use or after installation.

By making the aspect ratio of the vertical section 233 equal to or less than the fourth preset value, the length of the vertical section 233 can be made smaller. The solid fuel thus sufficiently fluidized can rapidly pass through the vertical section 233, and the solid fuel can rapidly enter the substantially horizontally disposed portion of the discharge pipe 230, that is, the solid fuel can enter the substantially horizontally disposed portion of the discharge pipe 230 at a flow rate higher than the settling velocity, so that the stability of conveying the solid fuel can be improved, that is, the discharge stability of the dispensing tank 20 can be further improved.

Preferably, the fourth preset value is less than or equal to 2. More preferably, the fourth preset value is less than or equal to 1.7. Most preferably, the fourth preset value is less than or equal to 1.3. This can further improve the discharge stability of the material dispensing can 20.

Preferably, the length of the vertical section 233 may be 50 cm or less. More preferably, the length of the vertical section 233 may be 40 cm or less. Further preferably, the length of the vertical section 233 may be 30 cm or less. Most preferably, the length of the vertical section 233 may be 20 cm or less.

Preferably, the distance between the lower end surface (lower surface) of the vertical section 233 and the upper surface 221 of the fluidization plate 220 in the up-down direction is less than or equal to the second preset value and greater than or equal to the third preset value. This not only allows sufficient space between the vertical section 233 (outlet pipe 230) and the fluidization plate 220 to accommodate the solid fuel, but also increases the stability of the solid fuel delivery, i.e., the stability of the outlet of the dispensing tank 20.

Wherein, the distance between the lower end surface of the vertical section 233 and the upper surface 221 of the fluidization plate 220 in the up-down direction is: the lower end face of the vertical section 233 is opposed to the first portion of the upper surface 221 of the fluidization plate 220 in the up-down direction, and the distance between the lower end face of the vertical section 233 and the first portion of the upper surface 221 of the fluidization plate 220 in the up-down direction is the distance between the lower end face of the vertical section 233 and the upper surface 221 of the fluidization plate 220 in the up-down direction.

More preferably, the second preset value is 20 cm; further preferably, the second preset value is 10 cm. More preferably, the third preset value is 1 cm; further preferably, the third preset value is 2 cm.

As shown in FIG. 2, in one example of the invention, the tapping pipe 230 comprises a horizontal section 231, a transition section 232 and a vertical section 233. A portion of the horizontal segment 231 passes through the through hole and protrudes into the solid fuel cavity 212, and an end of a portion of the horizontal segment 231 is connected to an upper end of the vertical segment 233 through the transition segment 232.

That is, the portion of the horizontal segment 231, the transition segment 232, and the vertical segment 233 are located within the solid fuel cavity 212. When the hair pot 20 is in use, the horizontal section 231 may be horizontally disposed, i.e., the horizontal section 231 may extend in a horizontal direction.

The solid fuel sufficiently fluidized thereby can rapidly pass through the vertical section 233 and the transition section 232, and thus the solid fuel can rapidly enter the horizontal section 231, that is, the solid fuel can enter the horizontal section 231 at a flow velocity higher than the settling velocity, so that the stability of conveying the solid fuel can be improved, that is, the discharge stability of the sending tank 20 can be further improved.

Preferably, the transition 232 may be a 90 ° bend, thereby making the construction of the hair styling pot 20 more rational.

The invention also provides a feeding device. The feeding device according to the embodiment of the present invention includes a burner and the dispensing can 20 according to the above-described embodiment of the present invention. Wherein, the feed inlet of the burner is communicated with the discharge outlet of the discharge pipe 230 of the material sending tank 20. Therefore, the feeding device provided by the embodiment of the invention has the advantages of stable discharging, uniform material distribution and the like.

The invention also provides a gasification furnace. The gasification furnace according to the embodiment of the present invention includes a furnace body and the burner 10 according to the above-described embodiment of the present invention. Wherein, the burner 10 is arranged on the furnace body. Therefore, the gasification furnace provided by the embodiment of the invention has the advantages of long service life of the burner and the like.

The invention also provides a gasification system. The gasification system according to the embodiment of the invention comprises a furnace body and the feeding device according to the embodiment of the invention. Wherein, the burner 10 of the feeding device is arranged on the furnace body.

The gasification system provided by the embodiment of the invention has the advantages of stable operation, uniform material distribution 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 tip, comprising:

a body (110), the body (110) having a plurality of first mounting channels; and

a plurality of oxygen-containing gas tubes (140), a plurality of the oxygen-containing gas tubes (140) being provided in the first installation channels in a one-to-one correspondence, each of the oxygen-containing gas tubes (140) having an oxygen-containing gas channel (141), a solid fuel channel (121) having a circular cross-section being defined between a wall surface of each of the first installation channels and the corresponding oxygen-containing gas tube (140), outlet ends (1211) of the solid fuel channel (121) being configured in a constricted shape, wherein a center line of each of the outlet ends (1211) intersects a center line of the corresponding oxygen-containing gas channel (141) at a point so as to form an impact point, the impact point being spaced apart from an end surface (113) of the body (110) adjacent to the outlet end (1211) by a first distance, the center line of the outlet end (1211) intersecting the end surface (113) at a first point, the center line of the corresponding oxygen-containing gas channel (141) intersects the end face (113) at a second point, the first point is spaced from the second point by a second distance, wherein the ratio of the first distance to the second distance is 1 or more and 10 or less, an oxygen-containing gas and a solid fuel are introduced into the gasification chamber through the corresponding oxygen-containing gas channel (141) and the solid fuel channel (121) to collide and combust to form an flat flame and generate a gasification reaction,

preferably, each of the solid fuel channels (121) and the corresponding oxygen-containing gas channel (141) are coaxially disposed.

2. A burner according to claim 1, wherein the body (110) comprises:

a main body (111), the main body (111) having a plurality of the first mounting channels; and

a plurality of solid fuel pipes (120), a plurality of said solid fuel pipes (120) being disposed in a one-to-one correspondence within a plurality of said first mounting passages, each said solid fuel pipe (120) being adapted to be connected to a canister by a pipe or adapted to be directly connected to a canister, wherein a plurality of said oxygen-containing gas pipes (140) are disposed in a one-to-one correspondence within a plurality of said solid fuel pipes (120), said solid fuel pipes (120) and respective said oxygen-containing gas pipes (140) defining said solid fuel passages (121) therebetween.

3. The burner of claim 1, wherein each of said solid fuel pipes (120) has a first straight section (122), a second straight section (123) and a connecting section (124), said first straight section (122) and said second straight section (123) being connected by said connecting section (124), wherein a portion of each of said first straight sections (122) is disposed in a corresponding one of said first installation channels, a plurality of said oxygen-containing gas pipes (140) are disposed in a corresponding one of said first straight sections (122), each of said second straight sections (123) is adapted to be connected by piping to a canister, each of said first straight sections (122) defines said solid fuel channel (121) with a corresponding said oxygen-containing gas pipe (140), preferably each of said first straight sections (122) and a corresponding said oxygen-containing gas pipe (140) are disposed coaxially,

preferably, each of the oxygen-containing gas tubes (140) comprises a third straight section (142) and a fourth straight section (143), the third straight section (142) being connected to the fourth straight section (143), wherein the third straight section (142) is provided within the corresponding first straight section (122), each of the first straight sections (122) and the corresponding third straight section (142) define the solid fuel channel (121) therebetween, a centerline of the corresponding third straight section (142) intersects the end face (113) at the second point,

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,

more preferably, an end (144) of each of the third straight sections (142) remote from the gas outlet of the oxygen-containing gas channel (141) is configured in a conical shape, and still more preferably, each of the first straight sections (122) and the corresponding third straight section (142) are coaxially arranged,

preferably, a plurality of swirl plates are arranged on the part, adjacent to the discharge hole of the solid fuel channel (121), of each first straight section (122), and more preferably, the included angle between each swirl plate and the horizontal plane is 25-45 degrees.

4. A burner according to claim 1, wherein said body (110) further has an ignition channel (131), a plurality of said solid fuel channels (121) and a plurality of said oxygen-containing gas channels (141) being arranged around said ignition channel (131), more preferably, the body (110) further comprising a squib (130), the main body (111) having a second mounting channel, wherein the squib (130) is provided in the second mounting channel, the squib (130) having the ignition channel (131), preferably, the body (110) is provided with a plurality of heat exchange channels (112), the plurality of heat exchange channels (112) are matched with the plurality of solid fuel channels (121) and the plurality of oxygen-containing gas channels (141) in a one-to-one correspondence, and each heat exchange channel (112) surrounds the corresponding solid fuel channel (121) and the corresponding oxygen-containing gas channel (141).

5. A feeder device, comprising:

a dispensing canister (20), the dispensing canister (20) having a plurality of discharge ports; and

the burner (10), the burner (10) is the burner (10) according to any one of claims 1 to 4, wherein the plurality of solid fuel passages (121) (121) of the burner (10) are communicated with the plurality of discharge ports in a one-to-one correspondence manner.

6. The feeding device according to claim 5, characterized in that said dispensing tank (20) comprises:

the tank body (210), wherein the tank body (210) is internally provided with a containing cavity (211);

the fluidization plate (220) is arranged in the accommodating cavity (211) so as to divide the accommodating cavity (211) into a solid fuel cavity (212) and a fluidization cavity (213), the fluidization cavity (213) is positioned below the solid fuel cavity (212), the fluidization cavity (213) is communicated with the solid fuel cavity (212), a plurality of through holes are formed in the side wall surface of the solid fuel cavity (212), and an air inlet (214) is formed in the wall surface of the fluidization cavity (213); and

a plurality of discharging pipes (230), wherein first parts of the discharging pipes (230) correspondingly penetrate through the through holes one by one and extend into the solid fuel cavity (212), discharge ports of the discharging pipes (230) correspondingly communicate with the solid fuel channels (121) (121),

preferably, the distance between the feed opening of the discharge pipe (230) and the upper surface (221) of the fluidization plate (220) in the vertical direction is less than or equal to a second preset value and greater than or equal to a third preset value,

preferably, the periphery of the fluidization plate (220) is connected with the side wall surface of the accommodating cavity (211), a plurality of through holes are arranged on the fluidization plate (220), the solid fuel cavity (212) is communicated with the fluidization cavity (213) through the plurality of through holes, and more preferably, the fluidization plate (220) is a sintered metal plate.

7. The feeding device according to claim 6, characterized in that the upper surface (221) of the fluidization plate (220) has a beveled portion, the outer edge of which is located below the inner edge of the beveled portion, preferably the beveled portion is opposite to the first portions of the plurality of discharge pipes (230) in the inner and outer direction,

more preferably, the upper surface (221) of the fluidization plate (220) is a conical surface, preferably, the fluidization plate (220) includes a conical portion (222) and a cylindrical portion (223), the lower surface of the conical portion (222) is connected with the upper surface of the cylindrical portion (223), wherein the circumferential surface of the cylindrical portion (223) is connected with the side wall surface of the receiving cavity (211), the circumferential surface of the conical portion (222) constitutes the inclined surface portion,

more preferably, the fluidization plate (220) includes a circular table portion having a lower surface connected to an upper surface of the cylindrical portion, wherein a circumferential surface of the cylindrical portion is connected to a side wall surface of the accommodation chamber, and a circumferential surface of the circular table portion constitutes the inclined surface portion,

preferably, the included angle between the inclined plane part and the horizontal plane is less than or equal to 20 degrees, and more preferably, the included angle between the inclined plane part and the horizontal plane is less than or equal to 15 degrees.

8. The feeding device according to claim 6, characterized in that the first portion of each tapping pipe (230) comprises a vertical section (233), the lower mouth of the vertical section (233) constituting the feeding inlet of the tapping pipe (230), the length/diameter ratio of the vertical section (233) being equal to or less than a fourth predetermined value, preferably equal to or less than 2, more preferably equal to or less than 1.7, most preferably equal to or less than 1.3, preferably each tapping pipe (230) comprises a horizontal section (231), a transition section (232) and the vertical section (233), a portion of the horizontal section (231) passing through the through hole and protruding into the solid fuel chamber (212), the end of the portion of the horizontal section (231) being connected to the upper end of the vertical section (233) through the transition section (232),

preferably, a distance between the lower end surface of the vertical section (233) and the upper surface (221) of the fluidization plate (220) in the vertical direction is less than or equal to the second preset value and greater than or equal to the third preset value, more preferably, the second preset value is 20 centimeters, further preferably, the second preset value is 10 centimeters, more preferably, the third preset value is 1 centimeter, and further preferably, the third preset value is 2 centimeters.

9. A gasification furnace, comprising:

a furnace body; and

a burner (10), the burner (10) being a burner (10) according to any one of claims 1 to 4, wherein the burner (10) is provided on the furnace body.

10. A gasification system, comprising:

a furnace body; and

feeding device according to any of claims 5-9, wherein the burner (10) of the feeding device is arranged on the furnace body.