WO2017032322A1

WO2017032322A1 - Coal distribution and agitation apparatus for gasifier and gasifier using same

Info

Publication number: WO2017032322A1
Application number: PCT/CN2016/096678
Authority: WO
Inventors: 傅敏燕; 杨汝仲; 范波涛; 窦余信
Original assignee: 上海泽玛克敏达机械设备有限公司
Priority date: 2015-08-26
Filing date: 2016-08-25
Publication date: 2017-03-02
Also published as: CN105038858A

Abstract

A coal distribution and agitation apparatus for a gasifier and a gasifier using same. The coal distribution and agitation apparatus for a gasifier is arranged in a gasifier below a feed inlet (61) at the top of the gasifier. The coal distribution and agitation apparatus comprises an upper coal distributor (1) and a lower agitator (4). An opening at the top of the coal distributor (1) is in communication with the feed inlet (61) at the top of the gasifier, and a coal distribution plate (12) is provided at the bottom of the coal distributor (1). A coal distribution area (62) is formed above the coal distribution plate (12), and a gasification area (63) of the gasifier is formed below the coal distribution plate (12) and around the agitator (4). Through holes are provided on the coal distribution plate (12) to allow coal to enter the gasification area (63) from the coal distribution area (62). The coal distribution plate (12) rotates with a central axial rod (5), a coal distribution cover (11) is further provided in the coal distributor (1), and the coal distribution cover (11) is movably connected to the central axial rod (5). Also provided is a gasifier comprising the goal distribution and agitation apparatus for a gasifier that has a simple structure and high gasification efficiency.

Description

Coal blending device for gasifier and gasifier thereof

Technical field

The invention belongs to the technical field of gas generation, and particularly relates to a coal blending device for a gasification furnace and a gasification furnace thereof.

Background technique

Coal gasification technology is a chemical technology that converts coal into flammable gas. It is a kind of coal or coal char, which uses oxygen (air, oxygen-enriched or industrial pure oxygen) and water vapor as gasification agent. A process for converting a combustible portion of coal or coal char into a combustible gas by a chemical reaction under high pressure.

The combustible gas obtained by gasification using coal gasification technology is gas, and the equipment for gasification is called a gas generator or a gasifier. Depending on the type of reactor in the gasifier, the gasifier can be divided into various types, such as a fixed bed gasifier, a fluidized bed gasifier, an entrained flow gasifier, a fluidized bed gasifier, and the like. Among them, the use of fixed bed gasifiers is particularly common. And the gas produced by the gasifier can be used as a city gas or as a raw material gas for synthetic natural gas, synthetic ammonia and urea, methanol, olefins, and synthetic oil. In addition, coal gasification technology is also a clean coal technology advocated by the state.

However, in the current fixed-bed gasification furnace, since the coal block directly falls on the coal-disc from the feed port, the coal block is unevenly distributed, resulting in low gasification efficiency of the fixed-bed gasifier.

Summary of the invention

In order to solve the above problems, the present invention provides a coal blending device for a gasification furnace and a gasification furnace thereof to improve gasification efficiency of the gasification furnace.

The present invention provides a coal blending device for a gasification furnace, which is disposed in a gasification furnace and located below a feed port at the top of the gasification furnace, wherein the coal blending device includes a coal blender located at an upper portion And a stirrer located at a lower portion, the top opening of the bucker is in communication with the feed port of the top of the gasifier, and the bottom of the brouwer is provided with a coal cloth tray, above the coal cloth tray Forming a coal area, the area around the coal tray, the area around the agitator is a gasification zone of the gasification furnace; the coal bunker is provided with a through hole for supplying coal from the coal The zone enters the gasification zone; the coal bunker is rotated following the central shaft, and the buckling machine is further provided with a coal cover, and the bunker cover is movably connected to the central shaft.

Further, in the coal blending device of the gasification furnace as described above, the coal cloth tray is further provided with a discharge pipe fixed to the bottom surface of the coal cloth tray and corresponding to the pass The position of the hole extends downwardly, and the coal block enters the gasification zone from the coal distribution zone through the through hole and the discharge pipe.

Further, in the coal blending device of the gasification furnace as described above, the coal blending device is further provided with a scraper, and the scraper is fixed on the coal disc and rotates along with the coal disc, The tar deposited on the inner wall of the gasifier is scraped off.

Further, in the coal blending device of the gasification furnace as described above, the coal cover is tapered or umbrella-shaped.

Further, in the coal blending device of the gasification furnace as described above, the agitator is also rotated in accordance with the central shaft, and the agitator is provided with one or more stirring arms, the stirring arm The number of layers is proportional to the adhesion of coal.

Further, in the coal blending device of the gasification furnace as described above, when the agitator is provided with a plurality of agitating arms, the length of the paddle on the uppermost agitating arm is the longest, and the lowermost layer is The length of the blade on the mixing arm is the shortest.

Further, in the coal blending apparatus of the gasification furnace as described above, the stirring arm on the agitator is provided with three layers, and includes, from top to bottom, an upper stirring arm, a middle stirring arm, and a lower stirring arm.

Further, in the coal blending device of the gasification furnace as described above, the upper agitating arm, the middle agitating arm and the lower agitating arm each include one or two blades; and all the blades are Uniformly distributed around the longitudinal central axis in the same plane perpendicular to the longitudinal central axis in which the central shaft is located.

Further, in the coal blending device of the gasification furnace as described above, the coal blending device is further provided with a cooling device penetrating the buncher and the agitator.

The present invention also provides a gasification furnace in which a coal blending device as described above is disposed inside a furnace body of the gasification furnace and below a feed port at the top of the gasification furnace.

The coal blending device of the gasification furnace of the present invention and the gasification furnace thereof are arranged in the coal cloth and above the coal cloth tray, so that the coal blocks entering the coal blender are evenly distributed in the coal cloth tray In the above, all the spaces in the coal sifter are filled and filled with coal, so that a large amount of gas produced in the gasification zone can be prevented from entering the coal hopper from the through hole on the coal cloth tray and then escaped from the feed port to reduce the gas. The loss greatly increases the gasification efficiency of the gasifier. In addition, because there is not a large amount of high-temperature gas entering the coal hopper, the coal in the coal hopper is prevented from being high. Warm and bonded into a large block can prevent the through holes on the coal tray from being blocked by the large pieces of coal that are bonded, reducing the risk of parking maintenance and improving the overall production efficiency.

Further, by extending the lowering pipe disposed on the bottom surface of the coal cloth tray, the highest position of the coal block piled up in the gasification zone is at the lower port of the lowering pipe, and the highest position of the coal block is up to the gas outlet. Larger space for gas circulation to be discharged from the gas outlet; it is also conducive to the natural sedimentation of the coal dust and tar carried by the gas during circulation and discharge, thereby ensuring the cleanliness of the gas and the coal dust settled at the same time. And the tar falls into the gasifier to continue gasification, further improving the gasification efficiency of the gasifier. If there is no blanking pipe on the bottom surface of the coal bunker, the highest position of the coal mass piled up in the gasification zone is on the bottom surface of the coal bunker. The space between the highest position of the coal block and the gas outlet is relatively small, and the gas is not easily circulated. The gas outlet is discharged. In this way, it is necessary to reduce the gasification speed to match the gas outlet speed, thereby reducing the overall production efficiency. Therefore, the lowering pipe provided on the bottom surface of the coal cloth tray extends downward, which further improves the overall gasification efficiency of the gasification furnace.

Further, by providing a scraper on the coal cloth tray, the coal dust and tar on the inner wall near the gas outlet can be scraped off, which not only ensures the smooth discharge of the gas, but also the scraped coal dust and tar fall into the gasifier. Gasification, thereby further improving gasification efficiency.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional structural view showing an embodiment of a coal blending apparatus for a gasification furnace of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or preferred. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional structural view showing an embodiment of a coal blending apparatus for a gasification furnace of the present invention. As shown in FIG. 1, the coal blending device of the gasification furnace of the present embodiment is disposed in the gasifier and located below the feed port 61 at the top of the gasifier, and the coal blending device includes the bucker located at the upper portion. 1 and the agitator 4 located at the lower portion, the top opening of the bauder 1 is in communication with the inlet 61 of the top of the gasifier, the bottom of the buncher 1 is provided with a coal bunker 12, and the coal is formed above the bundling disk 12. The area 62, below the cloth coal tray 12, including the surrounding area of the agitator 4, is a gasification zone 63 of the gasification furnace; the coal cloth tray 12 is disposed to enable the coal block and the coal area of the gasification zone 63 The coal blocks of 62 are isolated from each other.

In the coal blending device of the gasification furnace of the present embodiment, the coal coal tray 12 is provided with a through hole for the coal block to enter the gasification zone 63 from the coal mining area 62; the coal charging disk 12 rotates following the central shaft 5; Wherein, the central shaft 5 extends from the inlet 61 of the gasifier to the upper end of the agitator 4, and the coal sump 1 is further provided with a coal hood 11 which is located above the coal tray 12 Moreover, the coal cover 11 is movably connected to the central shaft 5, that is, when the central shaft 5 is rotated, the coal cover 11 can be fixed. Alternatively, the coal cover 11 may be connected to the side wall of the gasifier coalket 1 to fix the coal cover 11. As shown in FIG. 1, in the present embodiment, the coal cover 11 is disposed at the center of the buckling machine 1, specifically, the central axis of the bunker cover 11, the central axis of the central shaft 5, and the central axis of the coal bunker 12 are mutually coincide.

In the coal blending device of the gasification furnace of the present embodiment, the coal block falls from the feed port 61 and falls on the coal cover 11, and is evenly sprinkled from the lower end of the coal cover 11 onto the coal bunker disk 12. If there is no coal cover 11, the coal block falls from the feed port 61 and falls directly on the coal bunker disk 12, which may be unevenly distributed. The coal block may be concentrated in the center of the buckling machine 1, and the coal piece is disposed. There may be a gap in the peripheral area of 1 , and the gas generated in the gasification zone 63 may enter the buckling machine 1 through the through hole in the coal tray 12, and then from the top opening of the buncher 1 and the top of the gasifier. The feed port 61 escapes, directly reducing the gasification efficiency. Moreover, if a large amount of gas enters the buncher 1, because the gas temperature is high, the coal in the buncher 1 is likely to be bonded into a large block, which may block the through holes in the bun 12 and cause the coal to fail. Continue to fall, and finally only stop and repair, resulting in a lot of waste and reduce production efficiency. On the contrary, since the coal cover 11 is provided, the coal blocks are evenly distributed in the bucker 1, and the spaces in the buncher 1 are respectively The coal blocks are filled and filled, and the remaining space in the coal sifter 1 is small, so that a large amount of gas produced in the gasification zone 63 is prevented from entering the buncher 1 through the through holes in the coal bunker 12 and then from the feed port 61. Escape, reducing the loss of gas, thereby greatly improving the gasification efficiency of the gasifier. In addition, since a large amount of high-temperature gas does not enter the buncher 1, the coal pieces in the buncher 1 are prevented from being bonded into a large block due to high temperature, and the through holes on the bundling coal plate 12 can be prevented from being stuck. Blocking of large coal blocks has reduced the risk of parking maintenance and improved overall production efficiency.

In this embodiment, the coal cover 11 is tapered or umbrella-shaped. In practical applications, the coal cover 11 can also adopt other structures that can perform the same function, and will not be further described herein.

Further, as shown in FIG. 1 , on the basis of the technical solution of the above embodiment, the coal cloth tray 12 is further provided with a lower material pipe 13 fixed to the bottom surface of the coal cloth tray 12 and corresponding to the through hole. The position extends downwardly, and the coal block enters the gasification zone 63 from the coal distribution zone 62 through the through hole and the discharge pipe 13. That is to say, in the present embodiment, the position of the through hole is the position on the coal discharge tray 12 that intersects with the discharge tube 13. The size of the upper port of the lowering tube 13 is the same as the size of the through hole, or slightly smaller than the size of the through hole, so that the lowering tube 13 can be seamlessly connected with the through hole, ensuring that the coal can pass through the through hole and enter the blanking. The tube 13 then enters the gasification zone 63 from the bottom of the lowering tube 13.

In this embodiment, the lowering pipe 13 disposed on the bottom surface of the coal charging tray 12 extends downward, so that the highest position of the coal block stacked in the gasification zone 63 is at the lower port of the lowering pipe 13, and the highest position of the coal block is upward to the gas. There is a large space between the outlets for the circulation of gas from the gas outlet. Moreover, it is also beneficial for the coal to naturally carry out the coal dust and tar carried by the gas during circulation and discharge, thereby ensuring the cleanliness of the gas, and at the same time, the coal dust and tar settled down and continue to gasify, further improving Gasification efficiency of the furnace. If there is no lowering pipe 13 on the bottom surface of the coal charging tray 12, the highest position of the coal mass piled up in the gasification zone 63 is located on the bottom surface of the coal charging tray 12. The space between the highest position of the coal block and the gas outlet is relatively small, and the gas is relatively small. It is not easy to circulate and is discharged from the gas outlet. In this case, it is necessary to reduce the gasification speed to match the gas outlet speed, thus reducing the overall production efficiency. Therefore, the lowering tube 13 is disposed to extend downward on the bottom surface of the cloth coal tray 12, thereby further improving the overall gasification efficiency.

In the present embodiment, the shape and structure of the blanking pipe 13 and the size thereof are not particularly limited, and may be set according to actual conditions. For example, the longitudinal section of the lowering tube 13 may have a figure-eight or a trumpet shape, one end of the small opening is connected to the through hole at the upper side, and one end of the large opening is below, so that the coal piece falling from the through hole can be fully fallen. .

Further, as shown in FIG. 1 , on the basis of the technical solution of the above embodiment, the coal blending device of the gasification furnace of the present embodiment further includes a scraper 14 which is fixed on the coal charging tray 12 to follow. The cloth coal tray 12 rotates together to scrape off the tar deposited on the inner wall of the gasifier. In this way, the scraper 14 can scrape off the coal dust and tar on the inner wall near the gas outlet of the furnace body 6, thereby ensuring the smooth discharge of the gas, and the scraped coal dust and tar fall into the gasifier to continue combustion, further improving gasification. Gasification efficiency of the furnace. The size and size of the scraper 14 of the present embodiment are not particularly limited, and may be set according to actual needs.

The agitator 4 provided in this embodiment can prevent the cohesive coal from being bonded into a block in the gasification furnace to ensure the smooth progress of the coal gasification reaction in the gasification furnace and improve the gasification efficiency. The agitator 4 also rotates following the central shaft 5. The agitator 4 is provided with one or more stirring arms. The number of layers of the stirring arms is proportional to the adhesion of the coal. The greater the cohesiveness of the coal, the more the number of layers of the stirring arms are set. Moreover, when the agitator 4 is provided with a plurality of agitating arms, the length of the paddle on the uppermost agitating arm is the longest, and the length of the paddle on the lowermost agitating arm is the shortest. Therein, the blade lengths mentioned are the distances between each blade from the point of connection with the agitator shaft to the end of the blade. This is because, in the furnace body 6, the lower the ambient temperature, the more the wear of the blade is aggravated during stirring. The blades of the same length have the same resistance and wear due to the blade itself. Combined with the influence of ambient temperature, the lower blade is easily damaged. Therefore, the lower mixing arm is shorter, which reduces the resistance and wear that it is subjected to during mixing, thereby increasing the service life. In the specific implementation, the length of the blade on the upper and lower mixing arms may be decreased step by layer, or may not be reduced layer by layer, and only need to keep the overall trend decreasing. For example, when there are three layers of mixing arms, the length of the blades on the upper, middle and lower mixing arms can be reduced, or the lengths of the upper and lower mixing arms can be the same and slightly longer. The length is slightly shorter. When there are five layers of mixing arms, the length of the blades on the upper and lower five-layer mixing arms can be reduced, or the lengths of the upper two layers of the mixing arms are the same and slightly longer, and the lengths of the blades on the middle two mixing arms are the same. And slightly shorter than the length of the blade on the upper two layers of mixing arms, the length of the blade on the lowermost mixing arm is the shortest. And so on, no longer repeat them.

Further, as shown in FIG. 1 , on the basis of the technical solution of the above embodiment, the stirring arm on the agitator 4 is provided with three layers, which may include, in order from top to bottom, an upper stirring arm 41, a middle stirring arm 42 and a lower layer. The agitating arm 43, wherein the upper agitating arm 41, the intermediate agitating arm 42 and the lower agitating arm 43 each include one or two paddles. All the blades included in the upper stirring arm 41, the middle stirring arm 42 and the lower stirring arm 43 are evenly distributed in the longitudinal direction in which the central shaft 5 is located in the same plane perpendicular to the longitudinal central axis of the central shaft 5. Around the axis.

For example, when the upper agitating arm 41, the intermediate agitating arm 42, and the lower agitating arm 43 each include one paddle, the paddle of the upper agitating arm 41, the paddle of the intermediate agitating arm 42, and the paddle of the lower agitating arm 43 may be A total of three blades are projected in the same plane perpendicular to the central shaft 5, and the projections of the three blades are evenly distributed around the longitudinal center axis where the central shaft 5 is located, and among the three blades, The projection between the two is in the plane at an angle of 120 degrees.

When each layer of the agitating arm includes two blades, the two blades on each layer of the agitating arms are on the same line; the two blades on the adjacent two layers of the agitating arms are in a longitudinal direction perpendicular to the furnace body 6 The angle formed by the same plane of the axis is 60 or 120 degrees.

In practical applications, the size of the mixing arms of each layer can also be separately set according to specific needs.

Further, as shown in FIG. 1, on the basis of the technical solution of the above embodiment, a stirring cylinder 45 for supporting the blade may be provided outside the agitator 4. Specifically, the agitating cylinder 45 is fitted to the upper agitating arm 41, the intermediate agitating arm 42, and the lower agitating arm 43, and each of the agitating arms passes through the wall of the agitating cylinder 45. The shape and structure of the agitating cylinder 45 and the size thereof are not particularly limited, and may be selected according to actual needs. In particular, the agitating cylinder 45 has a cylindrical shape.

Further, as shown in FIG. 1 , on the basis of the technical solutions of the above embodiments, since the coal blending device, especially the agitator 4 is in operation, the ambient temperature is very high, up to 1000 ° C, therefore, the present implementation The coal blending device of the example is further provided with a cooling device 3 that runs through the bauder 1 and the agitator 4. In particular, the cooling device 3 can be arranged in the coal shaft 1 in the central shaft 5 in particular. The cooling device 3 is arranged in the agitator 4, in particular inside the mixing drum, in particular below the central shaft 5. The cooling device 3 in the cloth coal zone 62 and the gasification zone 63 in this embodiment may be an integrated cooling device. By providing the cooling device 3 and introducing a cooling medium, such as cooling water, inside the cooling device 3, the entire coal blending device is effectively cooled.

Further, a motor driving device 2 is provided on the furnace body 6, and the central shaft 5 drives the agitator 4 to operate under the driving action of the motor driving device 2.

In this embodiment, the coal block enters the inside of the furnace body 6 from the feed port 61, and is uniformly distributed on the coal cloth tray 12 under the action of the coal cloth cover 11, and then the coal block passes through the coal storage tray 12. The hole and the discharge pipe 13 are uniformly dispersed in the gasification zone 63 in the furnace body 6 while falling into the gasification zone. In the coal block in the zone 63, the coal block prevents the bond from agglomerating into a large block under the agitation of the agitator 4, and is sufficiently mixed with the gas generated in the gasification zone 63 to exchange heat exchange, thereby improving the gasification efficiency. Due to the arrangement of the discharge pipe 13, the gasification gas has a large space for circulation and discharge, and the small particles such as dust and coal powder entrained in the gas can be sufficiently settled and separated, so that the gas discharged from the gas outlet is relatively clean. At the same time, the scraper 14 disposed on the cloth coal tray 12 is scraped off by the rotation of the central shaft 5, and the coal dust and tar deposited near the gas outlet of the furnace body 6 are scraped off and returned to the gasification zone 63 to continue. use.

In summary, in the coal blending device of the gasification furnace of the above embodiment, since the coal cover 11, the coal seam and the scraper 14 are added to the coal blending device, the coal mass in the furnace body 6 is evenly distributed, and the gas is increased. The gasification efficiency of the chemical furnace; and the coal blending device of the gasification furnace provided by the above embodiments is simple in structure, easy to assemble, and low in cost.

The present invention also provides a gasification furnace in which the coal blending device of the gasification furnace described in the above embodiment is disposed inside the furnace body 6 of the gasification furnace and below the feed port 61 at the top of the gasification furnace. For details, refer to the description of the above embodiments, and details are not described herein again.

In the gasification furnace of the present embodiment, the coal coal agitating device of the gasification furnace is used, and the coal block 11 is placed above the coal cloth tray 12 in the buckling machine 1 to allow the coal block to enter the coal bunker 1 Evenly distributed on the coal bunker 12, the space in the buncher 1 is filled and filled with coal, and the gas produced in the gasification zone 63 is prevented from entering the buncher 1 through the through hole on the bundling coal tray 12 The feed port 61 escapes by itself, reducing the loss of gas, thereby greatly improving the gasification efficiency of the gasifier; and since no high-temperature gas enters the buncher 1, the coal block in the broom 1 is prevented from being subjected to high temperature. By bonding into a large block, it is possible to prevent the through holes located in the coal cloth tray 12 from being clogged by the large pieces of coal which are bonded. Reduce the risk of parking maintenance and improve overall production efficiency.

Further, the gasification furnace of the present embodiment is further extended downward by the discharge pipe 13 provided on the bottom surface of the coal discharge tray 12, so that the highest position of the coal block stacked in the gasification zone 63 is at the lower port of the discharge pipe 13, The highest position of the coal block has a large space between the gas outlet and the gas outlet for gas circulation to be discharged from the gas outlet. Moreover, it is also beneficial for the coal to be naturally settled by the coal dust and tar carried by the gas during circulation and discharge, thereby ensuring the cleanliness of the gas, and at the same time, the coal dust and tar settled fall into the bed gasifier and continue to gas. Further improve the gasification efficiency of the gasifier. If there is no lowering pipe 13 on the bottom surface of the coal charging tray 12, the highest position of the coal mass piled up in the gasification zone 63 is located on the bottom surface of the coal charging tray 12. The space between the highest position of the coal block and the gas outlet is relatively small, and the gas is relatively small. It is not easy to circulate and is discharged from the gas outlet. in this way, It is necessary to reduce the gasification speed to match the gas output rate and reduce the overall production efficiency. Therefore, the lowering pipe 13 provided on the bottom surface of the coal charging plate 12 extends downward, which further improves the overall gasification efficiency of the gasification furnace.

Further, in the gasification furnace of the present embodiment, by providing the scraper 14 on the coal cloth tray 12, the coal dust and the tar on the inner wall near the gas outlet can be scraped off, which not only ensures smooth discharge of the gas but also is scraped off. The coal dust and tar fall into the gasifier and continue to gasify, thereby further improving the gasification efficiency.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A coal blending device for a gasifier, disposed in a gasifier and located below a feed port at the top of the gasifier, wherein the coal blending device comprises a bucker located at an upper portion a mixer located at a lower portion, the top opening of the bauder is in communication with the feed port of the top of the gasifier, and the bottom of the batter is provided with a coal bunker, and the bunker disk is formed above a coal area, the area below the cloth bunker, the gasifier zone of the gasifier; the coal bunker is provided with a through hole for the coal block from the bunker area Entering the gasification zone; the coal bunker is rotated along the central shaft, and the bunker is further provided with a coal cover, and the bunker cover is movably connected to the central shaft.
The coal blending device for a gasification furnace according to claim 1, wherein the coal cloth tray is further provided with a discharge pipe, and the discharge pipe is fixed to a bottom surface of the coal cloth tray and corresponds to the The position of the through hole extends downward, and the coal block enters the gasification zone from the coal distribution zone through the through hole and the discharge pipe.
The coal blending device for a gasification furnace according to claim 1, wherein the coal blending device is further provided with a scraper, and the scraper is fixed on the coal disc and rotates along with the coal disc The tar deposited on the inner wall of the gasifier is scraped off.
The coal concentrating device for a gasification furnace according to claim 1, wherein the coal hood is tapered or umbrella-shaped.
The coal blending apparatus for a gasification furnace according to any one of claims 1 to 4, wherein the agitator is also rotated in accordance with the central shaft, and the agitator is provided with one or more layers of agitation. The arm, the number of layers of the stirring arm is proportional to the adhesion of the coal.
The coal blending apparatus for a gasification furnace according to claim 5, wherein when the agitator is provided with a plurality of stirring arms, the length of the blade on the uppermost stirring arm is the longest, and the lowermost layer The length of the blade on the agitating arm is the shortest.
The coal blending device for a gasification furnace according to claim 5, wherein the stirring arm on the agitator is provided with three layers, and includes, from top to bottom, an upper stirring arm, a middle stirring arm and a lower stirring arm. .
A coal blending apparatus for a gasification furnace according to claim 7, wherein one or two blades are provided on each of said upper stirring arm, said intermediate stirring arm and said lower mixing arm; The blades are evenly distributed around the longitudinal center axis in the same plane perpendicular to the longitudinal center axis of the central shaft.
A coal blending apparatus for a gasification furnace according to claim 5, wherein said coal blending means is further provided with a cooling means penetrating said buncher and said agitator.
A gasification furnace characterized in that the coal of any one of claims 1 to 9 is disposed under the furnace body of the gasification furnace and below the feed port of the top of the gasification furnace. Stirring device.