An oxygen controlled incinerator for radioactive combustible waste

Abstract

This invention relates to an oxygen-controlled incinerator for radioactive combustible waste, comprising an upper furnace body (1) and a lower furnace body (2). The upper furnace body (1) and the lower furnace body (2) are sequentially connected from top to bottom, and their inner shells together form the furnace chamber of the incinerator. The incinerator of this invention uses a cylinder to drive a flap to seal the feeding process, uses a spiral grate for stirring and ash removal, simplifies the piping through waste heat recovery, and extends the grate's lifespan at high temperatures through an air-cooled grate structure. This significantly reduces the incinerator height, allowing for optimized layout of mobile radioactive waste incineration devices and reducing the treatment cost of radioactive combustible waste.

Description

Technical Field

[0001] This invention belongs to the field of radiation protection, specifically relating to an oxygen-controlled incinerator for radioactive combustible waste. Background Technology

[0002] There is an urgent need for volume reduction treatment of radioactive combustible waste in China. Taking nuclear power plants as an example, the current management target for radioactive waste generated by a single unit in China is 50m³. 3 The actual amount generated is far higher than this value, requiring further volume and weight reduction of the waste to meet the requirements. This waste mainly consists of radioactive and combustible materials such as protective clothing, gloves, and adsorption resins. Currently, most of it is stored in temporary storage facilities, and some have exceeded their storage period, posing a fire risk and creating significant pressure on storage capacity, maintenance, and supervision.

[0003] Mobile incineration is currently the ideal solution for treating combustible waste from nuclear facilities in my country. At present, my country's nuclear facilities employ volume reduction technologies for radioactive combustible waste, including overpressure, cement solidification, and incineration. Overpressure has a relatively low volume reduction effect on combustible technical waste and tends to rebound after compression. Cement solidification, on the other hand, is a volume-increasing technology. In contrast, incineration can significantly reduce waste volume and is an internationally accepted technology for treating radioactive solid combustible waste. Currently, the number of incineration plants in China is small, and most nuclear facilities require long-distance transportation for processing combustible solid waste, significantly increasing processing costs. Therefore, the need to add more radioactive waste incineration plants is urgent, but the procedures for this in China are strict, and the construction period is long. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides an oxygen-controlled incinerator for radioactive combustible waste. This device uses a spiral grate for stirring and ash discharge, thereby discharging the ash laterally. The overall height of the device does not include the height of the ash box. At the same time, the pipeline is simplified by waste heat recovery, and the life of the grate at high temperatures is extended by the air-cooled grate structure. This significantly reduces the height of the incinerator, which can be used to optimize the layout of mobile radioactive waste incineration devices and help reduce the treatment cost of radioactive combustible waste.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: providing an oxygen-controlled incinerator for radioactive combustible waste, comprising an upper furnace body and a lower furnace body, wherein the upper furnace body and the lower furnace body are arranged sequentially from top to bottom, and after connection, the inner shells of the upper furnace body 1 and the lower furnace body 2 together form the furnace chamber of the incinerator.

[0006] Furthermore, the upper furnace body includes a feeding hopper, a feeding tilting mechanism, a feeding mechanism, a water-cooled tilting mechanism, and an upper furnace inner shell; the outlet of the feeding hopper is connected to the inlet of the upper furnace inner shell, the feeding tilting mechanism is installed at the feeding port on the upper surface of the feeding hopper, the feeding mechanism is installed inside the feeding hopper, and the water-cooled tilting mechanism is installed at the inlet of the upper furnace inner shell.

[0007] Furthermore, the flipping mechanism includes a feed cover plate and a cover plate cylinder; the feed cover plate is horizontally installed at the opening on the upper surface of the feed hopper, and the flipping shaft of the feed cover plate is connected to the cover plate cylinder.

[0008] Furthermore, the feeding mechanism includes a chain conveyor and a chain conveyor drive motor; the chain conveyor is installed in the feeding hopper, with the starting end of the chain conveyor located below the feeding port of the feeding hopper and the ending end of the chain conveyor located at the feeding hopper outlet; the drive shaft of the chain conveyor is fixedly connected to the motor shaft of the chain conveyor drive motor via a coupling.

[0009] Furthermore, the water-cooled flap mechanism includes a water-cooled flap, a top cylinder, and a drive frame; the water-cooled flap is vertically installed at the inlet of the inner shell of the upper furnace, the top cylinder is fixedly installed on the upper surface of the upper body, the piston rod of the top cylinder is connected to the flipping shaft of the water-cooled flap through the drive frame, the interior of the water-cooled flap is a cavity, and the two sides of the water-cooled flap are respectively provided with a water-cooled flap cooling water inlet and a water-cooled flap cooling water outlet.

[0010] Furthermore, an observation mirror is provided on the upper surface of the upper furnace body, a furnace temperature measuring port is provided on the side of the upper furnace body, and a flue gas outlet temperature measuring port and a flue gas outlet pressure measuring port are provided at the flue gas outlet of the upper furnace body.

[0011] Furthermore, a water-cooled jacket is provided in the side wall of the inner shell of the upper furnace. A cooling water inlet is provided at the bottom of the water-cooled jacket and is connected to the water-cooled jacket. A cooling water outlet and a drain valve interface are provided on the upper surface of the inner shell of the upper furnace. Both the cooling water outlet and the drain valve interface are connected to the water-cooled jacket.

[0012] Furthermore, the lower furnace body includes an ash bin, a lower furnace inner shell, a primary air duct, a spiral grate, a grate bearing mechanism, and an inner shell support. The lower furnace inner shell is mounted on the inner shell support, and the outlet at the bottom of the lower furnace inner shell is connected to the inlet of the ash bin. The spiral grate is horizontally installed at the bottom of the lower furnace inner shell. The left end of the spiral grate is connected to the motor shaft of the drive motor through the grate bearing mechanism, and the right end of the spiral grate is located inside the ash bin. The primary air duct is close to the inner side of the conical section of the lower furnace inner shell. The side wall of the lower furnace inner shell is equipped with an air-cooling jacket. The outer wall of the lower furnace body is equipped with an air inlet and an air outlet, both of which are connected to the air-cooling jacket. The outer wall of the lower furnace body is also equipped with a burner interface (passing through the air-cooling jacket). One end of the spiral grate is welded with a shaft head and has a cooling air inlet connected to the air-cooling jacket. The air-cooling outlet end of the spiral grate is inside the ash bin. An air-cooling jacket is installed inside the spiral grate, and the cooling air cools the spiral grate inside the hollow shaft and the spiral air-cooling jacket. Rectangular holes are made at the front and rear ends of the connection between the spiral air-cooling jacket and the hollow shaft along the spiral position to ensure that the cooling air flows through the spiral jacket. The cooling air enters the spiral grate from the air inlet at the front end perpendicular to the shaft, and exits from the spiral grate air-cooling outlet after passing through the hollow shaft and the spiral jacket.

[0013] Furthermore, a secondary air inlet is provided on the side wall of the lower furnace body, and a temperature measuring tube is provided on the side of the lower furnace body.

[0014] Furthermore, the ash hopper is equipped with a viewing window on the side, a spare air outlet on the upper surface, and an ash discharge port on the right end face.

[0015] The beneficial technical effects of this invention are as follows:

[0016] (1) This invention uses a spiral grate for stirring and ash removal, thereby discharging the ash laterally and reducing the height of the incinerator. Water cooling is used in the upper furnace body to ensure structural strength under high-temperature gas combustion; air cooling is used in the lower furnace body to recover heat for combustion air. At the same time, a chain conveyor is used in the feeding device instead of a cylinder, thereby reducing the space requirements of the equipment while ensuring the feeding speed; the partition between the feeding bin and the furnace is driven by a rotating flap, thereby arranging the cylinder horizontally to reduce the height of the equipment.

[0017] (2) The lower furnace body of the present invention has waste heat recovery: the lower furnace body uses an air-cooled jacket, and the heated cooling air is then sent into the furnace as combustion air.

[0018] (3) The feeding device of the present invention uses a water-cooled flap and a chain conveyor, which requires less equipment space;

[0019] (4) The grate of the present invention adopts a spiral air-cooled design: the spiral grate discharges the incineration ash horizontally to the ash box, the air-cooled jacket extends the service life of the grate in high temperature environment, and the high temperature combustion air sent back to the furnace from the grate air-cooled outlet can reduce the grate adhesion and coking. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is the front view of the upper furnace body;

[0022] Figure 3 This is a top view of the upper furnace body;

[0023] Figure 4 This is the front view of the lower furnace body;

[0024] Figure 5 This is a side view of the lower furnace body;

[0025] Figure 6 This is a schematic diagram of the spiral grate structure.

[0026] In the picture:

[0027] 1-Upper furnace body, 1-1-Observation mirror, 1-3-Temperature measuring port at flue gas outlet, 1-4-Pressure measuring port at flue gas outlet, 2-Lower furnace body, 2-1-Air inlet, 2-2-Air outlet, 2-3-Burner interface, 3-Feed hopper, 4-Feed cover plate, 4-1-Cover plate cylinder, 5-Chain conveyor, 5-1-Chain conveyor drive motor, 6-Water-cooled tilting plate, 6-1-Water-cooled tilting plate cooling water inlet, 6-2-Water-cooled tilting plate cooling water outlet, 7-Top cylinder, 7-1-Drive frame, 8- 8-1-Cooling water inlet, 8-2-Cooling water outlet, 8-3-Drain valve interface, 9-Upper furnace inner shell, 10-Air-cooled jacket, 11-Ash hopper, 11-1-Sight glass window, 11-2-Ash discharge port, 11-3-Spare flue gas outlet, 12-Lower furnace inner shell, 13-Spiral grate, 13-1-Shaft head, 13-2-Spiral grate air-cooled outlet, 13-3-Hollow shaft, 13-4-Spiral air-cooled jacket, 14-Grate bearing mechanism, 15-Inner shell support seat. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this invention provides an oxygen-controlled incinerator for radioactive combustible waste. The incinerator includes an upper furnace body 1 and a lower furnace body 2, which are arranged sequentially from top to bottom. After connection, the inner shells of the upper furnace body 1 and the lower furnace body 2 together form the furnace chamber of the incinerator.

[0030] Based on this, Benru Figure 2 and Figure 3As shown, the upper furnace body 1 includes a feeding bin 3, a feeding tilting mechanism, a feeding mechanism, a water-cooled tilting mechanism, and an upper furnace inner shell 9; the outlet of the feeding bin 3 is connected to the inlet of the upper furnace inner shell 9, the feeding tilting mechanism is installed at the feeding port on the upper surface of the feeding bin 3, the feeding mechanism is installed inside the feeding bin 3, and the water-cooled tilting mechanism is installed at the inlet of the upper furnace inner shell 9.

[0031] The flipping mechanism includes a feed cover plate 4 and a cover plate cylinder 4-1; the feed cover plate 4 is horizontally installed at the opening on the upper surface of the feed bin 3, and the flipping shaft of the feed cover plate 4 is connected to the cover plate cylinder 4-1. The feed cover plate is driven by the side cover plate cylinder 4-1.

[0032] The feeding mechanism includes a chain conveyor 5 and a chain conveyor drive motor 5-1. The chain conveyor 5 is installed inside the feed hopper 3, with its starting end located below the feed inlet of the feed hopper 3 and its ending end located at the outlet of the feed hopper 3. The drive shaft of the chain conveyor 5 is fixedly connected to the motor shaft of the chain conveyor drive motor 5-1 via a coupling. The chain conveyor is driven by an external motor 5-1.

[0033] The water-cooled tilting plate mechanism includes a water-cooled tilting plate 6, a top cylinder 7, and a drive frame 7-1. The water-cooled tilting plate 6 is vertically installed at the inlet of the upper furnace inner shell 9. The top cylinder 7 is fixedly installed on the upper surface of the upper body 1. The piston rod of the top cylinder 7 is connected to the tilting shaft of the water-cooled tilting plate 6 through the drive frame 7-1. The interior of the water-cooled tilting plate 6 is hollow. Water-cooled tilting plate cooling water inlet 6-1 and water-cooled tilting plate cooling water outlet 6-2 are respectively provided on both sides of the water-cooled tilting plate 6. The interface between the feeding bin 3 and the upper furnace inner shell 9 is separated by the water-cooled tilting plate 6. The water-cooled tilting plate is driven by the top cylinder 7 of the upper furnace body. Cooling water is supplied from the water-cooled tilting plate cooling water inlet 6-1 and water-cooled tilting plate cooling water outlet 6-2 on both sides of the tilting plate shaft.

[0034] An observation mirror 1-1 is provided on the upper surface of the upper furnace body 1. A furnace temperature measuring port (passing through the water-cooling jacket) is provided at the outlet of the upper furnace body 1. A flue gas outlet temperature measuring port 1-3 and a flue gas outlet pressure measuring port 1-4 are provided at the flue gas outlet of the upper furnace body 9.

[0035] A water-cooled jacket 8 is provided in the side wall of the inner shell 9 of the upper furnace. A cooling water inlet 8-1 is provided at the bottom of the water-cooled jacket 8, and the cooling water inlet 8-1 is connected to the water-cooled jacket 8. A cooling water outlet 8-2 and a vent valve interface 8-3 are provided on the upper surface of the water-cooled jacket 8, and both the cooling water outlet 8-2 and the vent valve interface 8-3 are connected to the water-cooled jacket 8.

[0036] The upper furnace body is equipped with a water-cooled jacket 8. Cooling water enters through the cooling water inlet 8-1 and flows out through the cooling water outlet 8-2. An air vent valve 8-3 is opened at the top to discharge air during water injection.

[0037] Based on this, such as Figure 4 and Figure 5 As shown, the lower furnace body 2 includes an ash bin 11, a lower furnace inner shell 12, a primary air duct 12-1, a spiral grate 13, a grate bearing mechanism 14, and an inner shell support 15. The lower furnace inner shell 12 is mounted on the inner shell support 15. The outlet at the bottom of the lower furnace inner shell 12 is connected to the inlet of the ash bin 11. The spiral grate 13 is horizontally installed at the bottom inside the lower furnace inner shell 12. One end of the spiral grate 13 is connected to the motor shaft of the drive motor through the grate bearing mechanism 14, and the other end of the spiral grate 13 is located inside the ash bin 11. The primary air duct 12-1 is tightly attached to the inner side of the conical section of the lower furnace inner shell 12. The side wall of the lower furnace inner shell 12 is provided with an air-cooled jacket 10. The outer wall of the lower furnace body 2 is provided with an air inlet 2-1 and an air outlet 2-2. Both the air inlet 2-1 and the air outlet 2-2 are connected to the air-cooled jacket 10. The lower furnace body 12 is also provided with a burner interface 2-3.

[0038] The spiral grate 13 is placed at the bottom of the inner shell 12 of the lower furnace chamber and is supported by the inner shell support seat 15 and the grate bearing mechanism 14. The grate bearing mechanism 14 includes bearings, pressure caps, etc., and its front end is connected to a three-phase motor through a coupling. The speed and direction of rotation can be adjusted by a frequency converter.

[0039] The lower furnace body 2 is equipped with an air-cooled jacket 10. The jacket has an air inlet 2-1 at the bottom and an air outlet 2-2 on the right side. The bottom of the lower furnace body 2 is equipped with an inner shell support 15.

[0040] The lower furnace body has burner interfaces 2-3 on its side, through which the burner is inserted obliquely into the lower furnace body.

[0041] The ash hopper 11 is welded to the lower side of the lower furnace body; the bottom of the inner shell 12 of the lower furnace chamber is arc-shaped so as to fit with the spiral grate 13. During use, the material and the incineration ash are moved back and forth by friction between the spiral grate and the inner shell, thereby achieving the effect of ash discharge and stirring.

[0042] Several primary air inlet pipes 12-1 are arranged at the lower part of the inner shell 12 of the lower furnace chamber to ensure uniform air distribution during material combustion and thus ensure complete combustion. A secondary air inlet 12-2 is provided in the middle, which comes from the cooling air heated in the air-cooled jacket, which can improve the combustion effect and increase the heat utilization rate. At the same time, a temperature measuring tube 12-3 is provided to measure the temperature of the lower furnace chamber.

[0043] The inner wall of the lower furnace shell 12 is provided with a secondary air inlet 12-2, and the lower furnace body 2 is equipped with a temperature measuring tube 12-3 (passing through the air-cooled jacket 10).

[0044] The ash hopper 11 has a viewing window 11-1 on its side, a spare air outlet 11-3 on its upper surface, and an ash discharge port 11-2 on its right end face.

[0045] In addition, such as Figure 6 As shown, the spiral grate 13 includes a shaft head 13-1, a hollow shaft 13-3, and a spiral cooling air jacket 13-4. The shaft head 13-1 is welded to one end of the spiral grate 13, and a cooling air inlet is connected to the air-cooling jacket. The air-cooling outlet 13-2 of the spiral grate is located inside the ash box. An air-cooling jacket is provided inside, and cooling air cools the spiral grate within the hollow shaft 13-3 and the spiral air-cooling jacket 13-4. Rectangular holes are opened at the front and rear ends of the connection between the spiral air-cooling jacket 13-4 and the hollow shaft 13-3 along the spiral direction to ensure that cooling air flows through the spiral jacket. Cooling air enters the spiral grate from the air inlet perpendicular to the shaft at the front end, spirals through the hollow shaft and jacket, and exits from the spiral grate air-cooling outlet 13-2.

[0046] This invention is implemented as follows: Radioactive waste (including but not limited to nuclear power technical waste, waste rubber, and waste ion exchange resin) is packaged and prepared. When feeding is required, the feed cover 4 is opened, and the packaged material falls onto the chain conveyor 5 of the feed hopper 3. The feed cover 4 is then closed to maintain a seal. The water-cooled flap 6 is then opened, and the chain conveyor 5 rotates to drop the material onto the spiral grate 13 inside the furnace. The water-cooled flap 6 is then closed. After the packaged radioactive waste enters the lower furnace inner shell 12, it is ignited by the flame of the burner or by the burning material. During combustion, the spiral grate 13 agitates the material through its forward and reverse rotation and interaction with the lower furnace inner shell 12. The incineration ash produced after burning a certain amount of material is discharged laterally from the spiral grate 13 into the ash hopper 12. Simultaneously, high-temperature combustion air is returned to the furnace through the spiral grate air-cooling outlet 13-2 to reduce the leakage of plastic materials.

[0047] At the same time, the upper furnace body 1 is cooled by water-cooled jacket 8, and the lower furnace body is cooled by air-cooled jacket 10. The cooling air after heating is divided into three paths as preheated combustion air and enters the furnace.

[0048] 1. After flowing out of the air outlet 2-2 from the air-cooled jacket 10, the gas passes through other pipelines and valves and then enters the lower furnace inner shell 12 through the secondary air inlet 12-2, ensuring complete combustion of the pyrolysis gas.

[0049] 2. The primary air inlet pipes 12-1, which are connected to the air-cooled jacket 10 and the inner shell of the lower furnace 12, directly enter the furnace, and the air is introduced from the bottom of the material to ensure that the material is fully pyrolyzed and combusted.

[0050] 3. After flowing out from the spiral grate air-cooled outlet 13-2, the ash enters the lower furnace inner shell 12 through the ash discharge port, so that the discharged incineration ash is completely burned, with low residual carbon content, and reduces the adhesion of slag on the spiral grate 13.

[0051] The oxygen-controlled incinerator for radioactive combustible waste described in this invention is not limited to the specific embodiments described above. Other embodiments derived by those skilled in the art based on the technical solution of this invention also fall within the scope of technical innovation of this invention.

Claims

1. An oxygen-controlled incinerator for radioactive combustible waste, characterized in that: The oxygen-controlled incinerator for radioactive combustible waste includes an upper furnace body (1) and a lower furnace body (2), which are arranged sequentially from top to bottom. The inner shell connecting the upper furnace body (1) and the lower furnace body (2) together form the furnace chamber of the incinerator. The upper furnace body (1) includes a feeding bin (3), a feeding flap mechanism, a feeding mechanism, a water-cooled flap mechanism, and an inner shell (9) of the upper furnace chamber. A water-cooled jacket (8) is provided inside the inner wall of the upper furnace body (1). The water-cooled flap mechanism includes a water-cooled flap (6), a top cylinder (7), and a drive frame (7-1). The water-cooled flap (6) is vertical. Installed at the inlet of the inner shell of the upper furnace (9); water cooling is used in the upper furnace body to ensure structural strength under high-temperature gas combustion; the lower furnace body (2) includes an ash bin (11), a lower furnace inner shell (12), a primary air duct (12-1), a spiral grate (13), a grate bearing mechanism (14), and an inner shell support (15); the lower furnace inner shell (12) is installed on the inner shell support (15), the outlet at the bottom of the lower furnace inner shell (12) is connected to the inlet of the ash bin (11), the spiral grate (13) is horizontally installed at the bottom inside the lower furnace inner shell (12), the spiral grate (11-1) is installed at the inlet of the upper furnace inner shell (9); 3) One end of the spiral grate (13) is connected to the motor shaft of the drive motor through the grate bearing mechanism (14), and the other end of the spiral grate (13) is located in the ash hopper (11). The primary air duct (12-1) is close to the inner side of the cone section of the lower furnace inner shell (12). The side wall of the lower furnace inner shell (12) is provided with an air-cooled jacket (10). The outer wall of the air-cooled jacket (10) is provided with an air inlet (2-1) and an air outlet (2-2). The air inlet (2-1) and the air outlet (2-2) are both connected to the air-cooled jacket (10). The outer wall of the lower furnace body (2) is also provided with a burner interface (2-3); the spiral grate (13) One end of the shaft head (13-1) is welded and a cooling air inlet is opened to connect with the air-cooling jacket. The air-cooling outlet (13-2) end of the spiral grate is inside the ash box, which is equipped with an air-cooling jacket. The cooling air cools the spiral grate inside the hollow shaft (13-3) and the spiral air-cooling jacket (13-4). Rectangular holes are opened at the front and rear ends of the connection between the spiral air-cooling jacket (13-4) and the hollow shaft (13-3) along the spiral position to ensure that the cooling air flows through the spiral jacket. The cooling air enters the spiral grate from the air inlet hole at the front end perpendicular to the shaft, and exits from the spiral grate air-cooling outlet (13-2) after spiraling through the hollow shaft and the jacket.

2. The controlled-oxygen incinerator for radioactive combustible waste as described in claim 1, characterized in that: The outlet of the feed bin (3) is connected to the inlet of the inner shell (9) of the upper furnace chamber. The feed flap mechanism is installed at the feed port on the upper surface of the feed bin (3). The feeding mechanism is installed inside the feed bin (3). The water-cooled flap mechanism is installed at the inlet of the inner shell (9) of the upper furnace chamber.

3. The oxygen-controlled incinerator for radioactive combustible waste as described in claim 2, characterized in that: The flipping mechanism includes a feed cover plate (4) and a cover plate cylinder (4-1); the feed cover plate (4) is horizontally installed at the opening on the upper surface of the feed bin (3), and the flipping shaft of the feed cover plate (4) is connected to the cover plate cylinder (4-1).

4. The controlled-oxygen incinerator for radioactive combustible waste as described in claim 2, characterized in that: The feeding mechanism includes a chain conveyor (5) and a chain conveyor drive motor (5-1); the chain conveyor (5) is installed in the feed bin (3), the starting end of the chain conveyor (5) is located below the feed inlet of the feed bin (3), the end of the chain conveyor (5) is located at the outlet of the feed bin (3), and the drive shaft of the chain conveyor (5) is fixedly connected to the motor shaft of the chain conveyor drive motor (5-1) through a coupling.

5. The oxygen-controlled incinerator for radioactive combustible waste as described in claim 2, characterized in that: The top cylinder (7) is fixedly installed on the upper surface of the upper furnace body (1). The piston rod of the top cylinder (7) is connected to the flipping shaft of the water-cooled flip plate (6) through the drive frame (7-1). The inside of the water-cooled flip plate (6) is a cavity. The two sides of the water-cooled flip plate (6) are respectively provided with a water-cooled flip plate cooling water inlet (6-1) and a water-cooled flip plate cooling water outlet (6-2).

6. The controlled-oxygen incinerator for radioactive combustible waste according to claim 2, characterized in that: An observation mirror (1-1) is provided on the upper surface of the upper furnace water-cooled jacket (8), an upper furnace temperature measuring port is provided on the side of the upper furnace body (1), and a flue gas outlet temperature measuring port (1-3) and a flue gas outlet pressure measuring port (1-4) are provided at the flue gas outlet of the upper furnace body (1).

7. The controlled-oxygen incinerator for radioactive combustible waste according to claim 2, characterized in that: The bottom of the water-cooled jacket (8) is provided with a cooling water inlet (8-1), which is connected to the water-cooled jacket (8). The upper surface of the water-cooled jacket (8) is provided with a cooling water outlet (8-2) and a drain valve interface (8-3), which are both connected to the water-cooled jacket (8).

8. The oxygen-controlled incinerator for radioactive combustible waste according to claim 1, characterized in that: The side wall of the lower furnace body (2) is provided with a secondary air inlet (12-2), and a temperature measuring tube (12-3) is inserted on the lower furnace body (2).

9. The oxygen-controlled incinerator for radioactive combustible waste according to claim 1, characterized in that: The ash silo (11) has a viewing window (11-1) on its side, a spare air outlet (11-3) on its upper surface, and an ash discharge port (11-2) on its right end face.

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