Spraying device for waste boiler of gasification furnace

Abstract

The utility model relates to the field of production and operation devices of gasification furnaces, in particular to a waste boiler spraying device of a gasification furnace. The technical problems that in the prior art, high-temperature raw gas of a waste heat boiler carries slag, as time goes on, the wall of a heat exchange pipe of the waste boiler is subjected to slag bonding to different degrees, the heat exchange efficiency is affected, and steam attenuation is caused are solved. According to the technical scheme, the waste boiler spraying device of the gasification furnace comprises a boiler body and a spraying assembly, the spraying assembly is installed in the boiler body, the spraying assembly sprays a water curtain into the boiler body and is used for trapping liquid ash, the spraying assembly is installed in the boiler body, the atomization effect is a hexadecagon similar to a circle, the water curtain is formed in the waste boiler, the liquid ash in the waste boiler can be trapped, and the slag bonding phenomenon of the ash can be avoided.

Description

Technical Field

[0001] The utility model belongs to the field of gasification furnace production and operation devices, and in particular relates to a gasification furnace waste boiler spraying device. Background Art

[0002] As an efficient and clean energy conversion equipment, gasifiers have been widely used in chemical, metallurgical, electric power and other industries. According to the gasification process reaction principle of gasifiers, the high-temperature raw coal gas and slag after the reaction of the gasifier leave the combustion chamber together and enter the radiation waste boiler for heat recovery to produce 10.0Mpa saturated steam. Because the high-temperature raw coal gas of the waste heat boiler carries slag, over time, it will cause varying degrees of slagging on the wall of the waste boiler heat exchange tube, affecting the heat exchange efficiency and causing steam attenuation. Utility Model Content

[0003] In order to overcome the problem that the high-temperature raw coal gas of the waste heat boiler carries slag, which will cause slagging to varying degrees on the waste boiler heat exchange tube wall over time, affecting the heat exchange efficiency and causing steam attenuation, the utility model provides a gasifier waste boiler spray device.

[0004] The technical solution of the utility model is: a gasification furnace waste boiler spraying device, comprising a boiler body and a spraying component; the spraying component is installed inside the boiler body, and the spraying component sprays a water curtain into the boiler body to capture liquid ash.

[0005] According to the gasification process reaction principle of the gasifier, the high-temperature raw coal gas and slag after the reaction of the gasifier leave the combustion chamber together and enter the radiation waste boiler for heat recovery to generate 10.0Mpa saturated steam. Because the high-temperature raw coal gas of the waste heat boiler carries slag, a spray assembly is installed inside the boiler body. The spray assembly sprays a water curtain into the boiler body to capture liquid ash and slag; it avoids the slag from slagging on the wall of the waste boiler heat exchange tube, affecting the heat exchange efficiency and causing steam attenuation.

[0006] Preferably, the spray assembly includes an arc-shaped spray pipe and a spray head; the arc-shaped spray pipe is provided with multiple sections, and the spray heads are evenly distributed on the arc-shaped spray pipe; the multiple sections of the arc-shaped spray pipe are spliced ​​into a spray ring inside the boiler body. According to the actual production situation, the number of arc-shaped spray pipes is arranged, and at least 2 sections are provided; the arc-shaped spray pipe can be spliced ​​into a ring inside the boiler body, so that the spray head on the arc-shaped spray pipe can spray downward to form a water curtain wall, increase the probability of capturing liquid ash, and reduce the phenomenon of slag slagging on the wall of the waste boiler heat exchange tube.

[0007] Preferably, the diameter of the nozzle atomizing hole is 1.8-3.0 mm, the nozzle spray diffusion angle is 90-130°, the optimal diameter of the nozzle atomizing hole is 2.0 mm, and the optimal nozzle spray diffusion angle is 120°. Such a design can ensure that the water curtain wall formed by the nozzle spray has no dead angles and a wide coverage range, thereby increasing the probability of capturing liquid ash.

[0008] Preferably, a water supply assembly for delivering water to the spray assembly is also included. A through hole is opened on the upper part of the pot body, and the through hole is arranged corresponding to the number of arc-shaped spray pipes; the water supply assembly water pipe passes through the through hole and extends to the inside of the pot body, and is connected with the arc-shaped spray pipe. The water supply assembly includes a water pump and a water supply pipe; the water pump suction port is connected to an external water source, and the water pump outlet is connected to the arc-shaped spray pipe through the water supply pipe. The water pump suction port is connected to an external water source, and the liquid outlet is connected to the arc-shaped spray pipe through the water supply pipe, and the water source is pumped into the arc-shaped spray pipe through the water supply pipe, and then a water curtain wall is sprayed out through the nozzle. The number of through holes corresponds to the number of arc-shaped spray pipes, and each through hole corresponds to an arc-shaped spray pipe.

[0009] Preferably, the spray assembly also includes a fixing ring; the number of fixing rings is determined according to the number of arc-shaped spray pipes, a fixing ring is arranged between two adjacent arc-shaped spray pipes, the fixing ring is opened in both directions, is installed inside the pot body, and the fixing ring is snap-fitted with the arc-shaped spray pipe; such a design makes it easy for the end of the arc-shaped spray pipe to be snap-fitted to the fixing ring, which plays a supporting role, so that the water curtain sprayed by the nozzle is uniform and stable.

[0010] Preferably, the arc-shaped spray pipe is provided with two sections, and the number of through holes corresponding to the number of arc-shaped spray pipes is 2. Such a design facilitates the arc-shaped spray pipe to be passed into the interior of the pot body through the through holes; and the centerline angle of the two through holes is 180 degrees, which facilitates the arc-shaped spray pipe to be spliced ​​into a ring inside the pot body.

[0011] Preferably, the through hole is located on a circle 575 mm away from the center of the pot body. When installed at this height, the water curtain wall formed by the spraying of the nozzle is the most complete, has the widest coverage, and has the greatest probability of capturing liquid ash.

[0012] Preferably, the water supply pipe passes through the through hole and is welded to the wall of the pot body. Affected by the internal pressure of the pot body, the welding method is the most stable.

[0013] Preferably, the spray head is rotatably mounted on the arc-shaped spray pipe; in this way, the spray head can be rotated 360° under the influence of water pressure, thereby increasing the coverage area of ​​the spray.

[0014] Beneficial effects of the utility model:

[0015] 1. The spray assembly is installed inside the boiler body, and the spray assembly sprays a water curtain into the boiler body to capture liquid ash; because the high-temperature raw coal gas of the waste heat boiler carries molten slag, a spray assembly is installed inside the boiler body, and the spray assembly sprays a water curtain into the boiler body to capture liquid ash; to prevent the molten slag from slagging on the wall of the waste boiler heat exchange tube, affecting the heat exchange efficiency and causing steam attenuation.

[0016] 2. Multiple sections of arc-shaped spray pipes are spliced ​​into a spray ring inside the boiler body; the number of arc-shaped spray pipes is arranged according to actual production conditions, and at least 2 sections are provided; the arc-shaped spray pipes can be spliced ​​into a ring inside the boiler body, so that the nozzles on the arc-shaped spray pipes can spray downward to form a water curtain wall, thereby increasing the probability of capturing liquid ash and reducing the phenomenon of slag formation on the wall of the waste boiler heat exchange tube.

[0017] 3. The nozzle is rotatably installed on the arc-shaped spray pipe; in this way, the nozzle can be rotated 360° under the influence of water pressure to increase the coverage area of ​​the spray. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a three-dimensional structural schematic diagram of a gasification furnace waste boiler spraying device of the utility model;

[0019] Figure 2 The three-dimensional structure schematic diagram of a water supply component of a gasification furnace waste boiler spraying device of the utility model is shown;

[0020] Figure 3 The three-dimensional structure schematic diagram of a spray assembly of a gasification furnace waste boiler spray device of the utility model is shown;

[0021] Figure 4 The structure diagram of the arc-shaped spray pipe and the spray head of the waste boiler spray device of the gasifier of the utility model is shown;

[0022] Figure 5 The schematic diagram of the front view of a gasification furnace waste boiler spraying device of the utility model is shown.

[0023] Figure 6 What is shown is a top view structural schematic diagram of a gasification furnace waste pot spraying device of the utility model.

[0024] The markings in the attached drawings are: 1. pot body; 2. spray assembly; 3. through hole; 4. fixing ring; 5. arc-shaped spray pipe; 6. nozzle; 7. water supply assembly; 8. water pump; 9. water supply pipe. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 6The utility model provides an embodiment: a gasifier waste boiler spray device, including a boiler body 1 and a spray assembly 2; the spray assembly 2 is installed inside the boiler body 1, and the spray assembly 2 sprays a water curtain into the boiler body 1 to capture liquid ash. According to the gasification process reaction principle of the gasifier, the high-temperature raw coal gas and slag after the reaction of the gasifier leave the combustion chamber together and enter the radiation waste boiler for heat recovery to generate 10.0Mpa saturated steam. Because the high-temperature raw coal gas of the waste heat boiler carries slag, a spray assembly is installed inside the boiler body, and the spray assembly sprays a water curtain into the boiler body to capture liquid ash; to prevent the slag from slagging on the wall of the waste boiler heat exchange tube, affecting the heat exchange efficiency and causing the problem of steam attenuation.

[0027] The spray assembly 2 includes an arc-shaped spray pipe 5 and a spray head 6; the arc-shaped spray pipe 5 is provided with multiple sections, and the spray heads 6 are evenly distributed on the arc-shaped spray pipe 5; the multiple sections of the arc-shaped spray pipe 5 are spliced ​​into a spray ring inside the boiler body 1. According to the actual production situation, the number of arc-shaped spray pipes is arranged, and at least 2 sections are provided; the arc-shaped spray pipe can be spliced ​​into a ring inside the boiler body, so that the spray head on the arc-shaped spray pipe can spray downward to form a water curtain wall, increase the probability of capturing liquid ash, and reduce the phenomenon of slag slagging on the wall of the waste boiler heat exchange tube.

[0028] The diameter of the atomizing hole of the nozzle 6 is 1.8-3.0 mm, and the spray diffusion angle of the nozzle 6 is 90-130°. The diameter of the atomizing hole of the nozzle is preferably 2.0 mm, and the spray diffusion angle of the nozzle is preferably 120°. Such a design can ensure that the water curtain wall formed by the nozzle spray has no dead angle, covers a wide range, and increases the probability of capturing liquid ash; the atomization effect is a hexagonal shape that is approximately circular, forming a water curtain inside the waste boiler, which can capture the liquid ash in the waste boiler and avoid the slagging phenomenon of the ash.

[0029] It also includes a water supply assembly 7 for conveying water to the spray assembly 2. A through hole 3 is opened on the upper part of the pot body 1. The through hole 3 is set corresponding to the number of arc-shaped spray pipes 5. The water supply pipe of the water supply assembly 7 passes through the through hole 3 and extends to the inside of the pot body 1, and is connected with the arc-shaped spray pipe 5. The water supply assembly 7 includes a water pump 8 and a water supply pipe 9. The liquid pumping port of the water pump 8 is connected to an external water source, and the liquid outlet of the water pump 8 is connected with the arc-shaped spray pipe 5 through the water supply pipe 9. The liquid pumping port of the water pump is connected to an external water source, and the liquid outlet is pumped into the arc-shaped spray pipe through the water supply pipe, and then a water curtain wall is sprayed out through the nozzle. The number of through holes corresponds to the number of arc-shaped spray pipes, and each through hole corresponds to an arc-shaped spray pipe.

[0030] The spray assembly 2 also includes a fixing ring 4; the number of fixing rings is determined according to the number of arc-shaped spray pipes, and a fixing ring 4 is arranged between two adjacent arc-shaped spray pipes 5; the fixing ring 4 is bidirectionally opened and installed inside the pot body 1, and the fixing ring 4 is engaged with the arc-shaped spray pipe 5. The fixing ring 4 is designed and installed inside the pot body 1, so that the end of the arc-shaped spray pipe 5 is engaged with the fixing ring 4, which plays a supporting role, so that the water curtain sprayed by the spray head is uniform and stable.

[0031] The arc-shaped spray pipe 5 is provided with two sections, and the through hole 3 is provided with two corresponding to the number of the arc-shaped spray pipes 5. Such a design facilitates the arc-shaped spray pipe to be passed into the interior of the pot body through the through hole; and the centerline angle of the two through holes is 180 degrees, which facilitates the arc-shaped spray pipe to be spliced ​​into a ring inside the pot body. The through hole 3 is located on a circumference 575 mm away from the center of the pot body 1. When installed at this height, the water curtain wall formed by the spray head is the most complete, with the widest coverage and the greatest probability of capturing liquid ash; the water supply pipe 9 passes through the through hole 3 and is welded to the wall of the pot body 1; affected by the internal pressure of the pot body, the welding method is the most stable. The spray head 6 is rotatably installed on the arc-shaped spray pipe 5, so that the spray head can be rotated 360° under the influence of water pressure to increase the coverage area of ​​the spray.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A gasifier waste boiler spraying device, characterized in that: The invention comprises a pot body (1) and a spray assembly (2); the spray assembly (2) is installed inside the pot body (1), and the spray assembly (2) sprays a water curtain into the pot body (1) to capture liquid ash; the spray assembly (2) comprises an arc-shaped spray pipe (5) and a spray head (6); the arc-shaped spray pipe (5) is provided with a plurality of sections, and the spray heads (6) are evenly distributed on the arc-shaped spray pipe (5); the plurality of sections of the arc-shaped spray pipe (5) are spliced ​​into a spray ring inside the pot body (1).

2. A gasifier waste boiler spraying device according to claim 1, characterized in that: The diameter of the atomizing hole of the nozzle (6) is 1.8 to 3.0 mm, and the spray diffusion angle of the nozzle (6) is 90 to 130 degrees.

3. The gasifier waste boiler spraying device according to claim 1, characterized in that: It also includes a water supply assembly (7) for conveying water to the spray assembly (2); a through hole (3) is provided on the upper portion of the pot body (1); the through holes (3) are arranged corresponding to the number of the arc-shaped spray pipes (5); a water pipe of the water supply assembly (7) passes through the through hole (3) and extends to the inside of the pot body (1), and is communicated with the inside of the arc-shaped spray pipe (5).

4. A gasifier waste boiler spraying device according to claim 3, characterized in that: The water supply assembly (7) comprises a water pump (8) and a water supply pipe (9); the liquid suction port of the water pump (8) is connected to an external water source, and the liquid outlet of the water pump (8) is connected to the arc-shaped spray pipe (5) through the water supply pipe (9).

5. The gasifier waste boiler spraying device according to claim 1, characterized in that: The spray assembly (2) also includes a fixing ring (4); a fixing ring (4) is arranged between two adjacent arc-shaped spray pipes (5); the fixing ring (4) is bidirectionally opened and is installed inside the pot body (1); the fixing ring (4) is snap-fitted with the arc-shaped spray pipe (5).

6. The gasifier waste boiler spraying device according to claim 3, characterized in that: The arc-shaped spray pipe (5) is provided with two sections, and two through holes (3) are provided corresponding to the number of the arc-shaped spray pipes (5), and the center line angle of the two through holes (3) is 180 degrees.

7. The gasifier waste boiler spraying device according to claim 3 is characterized in that: The through hole (3) is located on a circumference 575 mm away from the center of the pot body (1).

8. The gasifier waste boiler spraying device according to claim 4, characterized in that: The water supply pipe (9) passes through the through hole (3) and is welded to the wall of the pot body (1).

9. The gasifier waste boiler spraying device according to claim 1, characterized in that: The spray head (6) is rotatably mounted on the arc-shaped spray pipe (5).

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