CN214949081U - Burn burning furnace suitable for useless processing of fluorine-containing danger - Google Patents

Abstract

The utility model discloses an burn burning furnace suitable for useless processing of fluorine-containing danger, including the furnace body, the furnace body top is equipped with the outlet flue, and the furnace body bottom is equipped with the hearth, and the hearth middle part is equipped with row ash hole, is equipped with vertical rotatory main shaft on the hearth, is equipped with on the rotatory main shaft to use it as the rotatory swinging boom of rotation axis, is equipped with the puddler that extends to the hearth on the swinging boom, be equipped with bottom oxygen supply pipe in the hearth, can dismantle on the hearth and be connected with first ventilation lid and/or second ventilation lid, all be equipped with respectively on first ventilation lid and the second ventilation lid and feed through bottom oxygen supply pipe and the inside oxygen suppliment passageway of furnace body, hearth, first ventilation lid and second ventilation lid are made by corrosion-resistant material, swinging boom and puddler surface covering have corrosion-resistant material. The utility model discloses life cycle is long, and it is low to maintain the frequency, and the operation maintenance cost is low.

Description

Burn burning furnace suitable for useless processing of fluorine-containing danger

Technical Field

The utility model relates to a danger waste material handles technical field, especially relates to an burn burning furnace suitable for useless processing of fluorine-containing danger.

Background

With the rapid development of economy in China, the generation amount of dangerous waste, namely hazardous waste, is increased rapidly. In view of the potential environmental risks and the threat to human health, the danger of waste becomes one of the major environmental problems facing China. The hazardous waste incineration method has the advantages that toxic and harmful organic waste in hazardous waste can be effectively destroyed through incineration, the volume and the quality of the waste are reduced, the final safe disposal of the waste is facilitated, and the hazardous waste reduction and harmless technology is the most rapid and effective technology.

The existing dangerous waste materials are usually incinerated through a rotary kiln, and the dangerous waste materials are sufficiently incinerated by utilizing the rotary vibration of the rotary kiln. However, one of the hazardous wastes contains fluorine which has extremely strong corrosivity, and acid gas with strong corrosivity, especially fluoride such as HF, can be generated in the incineration process. If utilize the rotary kiln to burn fluorine-containing danger useless, the refractory material layer of rotary kiln, insulating layer, heat preservation are not hard up easily at the rotational vibration in-process, produce gas pocket and little crack clearance, meet strong corrosive gas in high temperature, and the corrosion rate is extremely fast, appears droing easily. Because the whole inside of the rotary kiln is contacted with the fluorine-containing hazardous waste, the rotary kiln needs to be comprehensively maintained and replaced in a very short time. This results in a short life cycle, high maintenance frequency and high operation and maintenance costs for the rotary kiln.

For example, a "hazardous waste rotary kiln incineration process" disclosed in chinese patent literature, whose publication No. CN112361351A, the hazardous waste rotary kiln includes a cylinder, two ends of the cylinder are respectively provided with a kiln head cover and a kiln tail cover which are connected in a rotating and sealing manner, the lower part of the kiln tail cover is provided with a slag hole, the kiln head cover is cylindrical, the side wall of the kiln head cover is provided with a main air hole and an auxiliary air hole, the main air hole is located at the top of the kiln head cover, the main air hole and the auxiliary air hole are not on the same circumferential line of the kiln head cover, the main air hole is arranged close to the cylinder, and the auxiliary air hole is arranged far from one side of the cylinder; putting the hazardous waste into a barrel for incineration, and after the temperature in the barrel rises to 1000-1150 ℃, supplying air into the kiln hood from the main air hole and the auxiliary air hole, wherein the air speeds of the main air hole and the auxiliary air hole are consistent; after the hazardous waste is incinerated, the ash and slag are led out from the slag outlet. The invention utilizes the rotary kiln to burn hazardous waste, and has the defects that as the rotary kiln is a dynamic rotary vibration kiln, a refractory material layer, a heat insulation layer and a heat insulation layer are easy to loosen, generate air holes and small crack gaps in the rotary vibration process, and the kiln is easy to be strongly corroded by gas to fall off when burning the fluorine-containing hazardous waste, the kiln can not be used continuously quickly, frequent maintenance and replacement are needed, and the operation and maintenance cost is high.

Disclosure of Invention

The utility model relates to an overcome prior art's danger and burn device life cycle is short, maintains that the frequency is high, and the problem that the operation maintenance cost is high provides an incinerator that is applicable to useless processing of fluorine-containing danger, and life cycle is long, and it is low to maintain the frequency, and the operation maintenance cost is low.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an burn burning furnace suitable for useless processing of fluorine-containing danger, includes the furnace body, and the furnace body bottom is equipped with the hearth, is equipped with vertical rotatory main shaft on the hearth, is equipped with on the rotatory main shaft to use it as the rotatory swinging boom of rotation axis, is equipped with the puddler that extends to the hearth on the swinging boom, be equipped with bottom oxygen supply pipe in the hearth, can dismantle on the hearth and be connected with first ventilation lid and/or second ventilation lid, all be equipped with respectively on first ventilation lid and the second ventilation lid and feed through bottom oxygen supply pipe and the inside oxygen supply channel of furnace body, hearth, first ventilation lid and second ventilation lid are corrosion-resistant component, swinging boom and puddler surface covering have corrosion-resistant layer.

The utility model is characterized in that the fluorine-containing hazardous waste incinerator is arranged as a static incinerator, the incinerator body and the bottom oxygen supply component are fixed, the incinerator body is not easy to loosen or generate gaps in the incineration process, the corrosion speed is delayed, the service cycle is long, the maintenance frequency is low, and the cost is low; the rotary arm and the stirring rods are arranged in the incinerator and used for pushing fluorine-containing hazardous wastes to rotate, the rotary arm extends along the radial direction, the stirring rods are arranged at the bottom of the incinerator and used for pushing the fluorine-containing hazardous wastes to spirally move on a hearth from the circumference to the circle center, the fluorine-containing hazardous wastes are gradually dried and pyrolyzed in the moving process to be incinerated into ash residues and discharged from an ash discharge port, and the fully incinerated smoke is discharged from a smoke outlet at the top; combustion-supporting air is introduced from the bottom to supply oxygen, the combustion-supporting air is firstly introduced into the bottom oxygen supply pipe, and then uniform oxygen supply is carried out at the bottom of the furnace body through the plurality of ventilation covers, because the bottom oxygen supply pipe is arranged in the hearth, the bottom oxygen supply pipe cannot be corroded in the incineration process, only the surfaces of the hearth and the ventilation covers are in contact with hazardous wastes containing fluorine, the hearth and the ventilation covers are used as corrosion-resistant components, the corrosion speed is slow, and because the ventilation covers are detachably connected to the hearth, the ventilation covers are very convenient to replace and maintain; the hearth is preferably made of castable, and when the hearth is corroded and thinned after being used for a long time, the hearth only needs to be poured to the original thickness.

Preferably, the bottom oxygen supply pipe comprises a plurality of annular pipes which are sequentially sleeved from inside to outside, and a plurality of first ventilation covers and/or second ventilation covers are uniformly distributed on each annular pipe.

The annular pipe ensures the oxygen charging and distributing in the circumferential direction of the hearth, and the multiple annular pipes ensure the oxygen charging and distributing in the radial direction of the hearth and provide guarantee for independent oxygen supply in different areas.

Preferably, the stirring rods are correspondingly arranged between the adjacent annular pipes.

Avoid the puddler to interfere mutually with the convex ventilation lid in annular tube top when rotating, avoid damaging.

Preferably, the bottom of the furnace body is provided with a plurality of air boxes, the bottom of each annular pipe is connected with one air box through an air pipe, and the air pipes are provided with flow control valves.

The flow control valves are arranged corresponding to the annular pipes independently to supply oxygen to the annular pipes independently, so that the oxygen supply amount at different radial positions can be adjusted conveniently, for example, the oxygen demand of the pyrolysis zone close to the periphery is less, the oxygen content of the outer annular pipe can be reduced, the oxygen demand of the incineration zone close to the center is more, and the oxygen content of the inner annular pipe is increased.

Preferably, the first ventilation cover is a cylinder with a sealed top, and a first oxygen supply hole is formed in the wall of the cylinder.

The ventilation lid can have multiform, and first ventilation lid mainly plays the cloth oxygen effect, and combustion-supporting air gives vent to anger from the ring pipe after through a section of thick bamboo in and through first oxygen suppliment hole to the useless oxygen suppliment of fluorine-containing danger, and circumference equipartition multiunit can be followed to first oxygen suppliment hole, guarantees that the useless homoenergetic of fluorine-containing danger around the ventilation lid obtains abundant burning.

Preferably, the first oxygen supply hole is inclined downward from the inside to the outside.

Avoid the useless pouring of fluorine-containing danger to go into in the bottom oxygen supply pipe, and guarantee to carry out effective oxygen suppliment to the useless danger of laminating on the hearth.

Preferably, the side wall of the second vent cover is provided with a through hole, the second vent cover is internally provided with a second oxygen supply pipe communicated with the bottom oxygen supply pipe, the second vent cover is internally provided with a second oxygen supply hole respectively communicated with the second oxygen supply pipe and the inside of the furnace body, and the second vent cover is also internally provided with a third oxygen supply hole respectively communicated with the second oxygen supply pipe and the through hole.

Although the movement track of the fluorine-containing hazardous waste is spiral, the ventilation cover has small obstruction to the fluorine-containing hazardous waste, the obstruction still exists at certain positions, the fluorine-containing hazardous waste can be blocked by the ventilation cover and cannot move continuously, the second ventilation cover is arranged at the positions, the fluorine-containing hazardous waste transversely passes through the through hole under the pushing of the rotating arm and moves continuously forwards, and the axial direction of the through hole is preferably consistent with the moving direction of the hazardous waste; and combustion air then passes through the second oxygen feed pipe, and partly air passes through the useless oxygen suppliment of second oxygen suppliment hole to the outside useless oxygen suppliment of fluorine-containing danger of ventilation lid, and another part air passes through the useless oxygen suppliment of third ventilation lid to the useless oxygen suppliment of fluorine-containing danger in the ventilation lid through-hole. The second supplies oxygen hole and third to supply oxygen hole preferred to be inclined downwards and set up, and the effect is the same with first oxygen hole that supplies, and in addition, the third of slope supplies oxygen hole still to help the useless effect of pushing out in the through-hole of danger. The second ventilating cover can be arranged for the hazardous waste containing fluorine with low combustion oxygen demand.

Preferably, the bottom surface of the through hole is a slope declining towards the two ends of the through hole.

Avoid the useless accumulation of danger in the through-hole, in time outwards discharge.

Preferably, a second oxygen supply channel communicated with the interior of the furnace body is arranged in the rotating arm and the stirring rod.

Through setting up second oxygen suppliment passageway and increasing the oxygen suppliment all the way in the useless top of danger, further promote the oxygen suppliment ability, the burning is more abundant.

Preferably, the side wall of the furnace body is provided with a rotary oxygen supply port, the rotary oxygen supply port is uniformly arranged around the circumferential direction of the side wall of the furnace body, and an included angle is formed between the axial direction of the rotary oxygen supply port and the tangential direction of the side wall of the furnace body.

The rotary oxygen supply port supplies oxygen along the rotation direction of the combustion channel, so that the combustion flame in the furnace forms rotary backflow flame, and the gas phase in the furnace body is ensured to be fully combusted.

Therefore, the utility model discloses following beneficial effect has: (1) the static incinerator has the advantages of corrosion speed delay, long service cycle, low maintenance frequency and low operation and maintenance cost; (2) oxygen is uniformly distributed by supplying oxygen from the bottom, sufficient combustion is ensured, and the device has strong corrosion resistance, convenient maintenance and low cost; (3) independently supplying oxygen according to different oxygen demands of different areas; (4) the second vent cover is arranged to avoid the obstruction to the movement of the fluorine-containing hazardous waste; (5) the rotary flame is adopted for combustion, the temperature in the furnace is kept consistent, and the combustion efficiency is high; (6) harmful gases are fully combusted and removed.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an enlarged view of the vent cover of fig. 1.

Fig. 3 is a top view of the inventive hearth.

Fig. 4 is a schematic structural diagram of the second venting cover of the present invention.

Fig. 5 is a sectional view of the second venting cover of the present invention

Fig. 6 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: 1. furnace body, 11, outlet flue, 12, the oxygen suppliment mouth of circling round, 13, supplementary combustor, 2, the furnace hearth, 21, the ash discharge mouth, 22, vertical oxygen suppliment passageway, 3, rotatory main shaft, 31, power device, 4, the swinging boom, 41, the puddler, 42, the puddler oxygen suppliment mouth, 5, bottom oxygen suppliment pipe, 6, first ventilation lid, 61, first oxygen suppliment hole, 62, first oxygen suppliment pipe, 7, second ventilation lid, 71, through-hole, 72, second oxygen suppliment pipe, 73, second oxygen suppliment hole, 74, third oxygen suppliment hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Example 1

As shown in figure 1, an incinerator suitable for fluorine-containing hazardous waste treatment, furnace body 1 including circular tube-shape, furnace body 1 top is big end down's toper, the toper top is equipped with outlet flue 11, be equipped with the feed inlet on the furnace body 1 lateral wall, furnace body 1 bottom is poured there is the hearth 2 of being made by corrosion resistant material, hearth 2 middle part is equipped with ash discharge port 21, be equipped with vertical rotatory main shaft 3 on the hearth 2, be equipped with six levels on the rotatory main shaft 3 and radially stretch out swinging boom 4, the angle is unanimous between the swinging boom 4, extend vertical puddler 41 downwards on the swinging boom 4, puddler 41 arranges a plurality ofly along swinging boom 4, puddler 41 can dismantle with swinging boom 4 and be connected, all coat corrosion resistant material outside swinging boom 4 and puddler 41. The rotary arm 4 rotates about a rotary shaft. A power device 31 is arranged below the hearth 2, and the power device 31 drives the stirring main shaft 3 to rotate.

As shown in fig. 2 and 3, a bottom oxygen supply pipe 5 is arranged in the furnace hearth 2, the bottom oxygen supply pipe 5 comprises a plurality of annular pipes which are sequentially and concentrically sleeved from inside to outside, a plurality of first ventilation covers 6 and second ventilation covers 7 made of corrosion-resistant materials are uniformly distributed on each annular pipe, a vertical oxygen supply channel 22 for communicating the inside of the furnace body 1 with the bottom oxygen supply pipe 5 is arranged at the position of the furnace hearth 2 corresponding to the ventilation covers, the annular pipes and the first ventilation covers 6 and the second ventilation covers 7 are correspondingly arranged between the radially adjacent stirring rods 41, and an air box is arranged below the furnace hearth 2 and independently supplies oxygen to each annular pipe.

As shown in fig. 2, the first ventilation cover 6 is a cylinder with a sealed top, a first oxygen supply pipe 62 is arranged in the cylinder, a first oxygen supply hole 61 which is inclined downwards from inside to outside is arranged on the cylinder wall, the first oxygen supply hole 61 is communicated with the first oxygen supply pipe 62 and the interior of the furnace body 1, the diameter of the bottom of the first ventilation cover 6 is smaller than the diameter of the cylinder, and the bottom is in threaded connection with the vertical oxygen supply channel 22.

As shown in fig. 4 and 5, the second vent cover 7 is a cylinder with a sealed top, the diameter of the bottom is smaller than that of the cylinder, the bottom is in threaded connection with the vertical oxygen supply channel 22, a through hole 71 is transversely formed in the side wall, the bottom surface of the through hole 71 is a slope declining towards the two ends of the through hole 71, a second oxygen supply pipe 72 communicated with the vertical oxygen supply channel 22 is arranged in the second vent cover 7, the second oxygen supply pipe 72 is arranged outside the through hole 71, second oxygen supply holes 73 respectively communicated with the second oxygen supply pipe 72 and the inside of the furnace body 1 are arranged in the second vent cover 7, third oxygen supply holes 74 respectively communicated with the second oxygen supply pipe 72 and the through hole 71 are also arranged in the second vent cover 7, and the second oxygen supply holes 73 and the third oxygen supply holes 74 are both arranged obliquely downwards.

The side wall of the furnace body 1 is provided with an annular convolution oxygen supply channel, the convolution oxygen supply channel is provided with a convolution oxygen supply port 12 communicated with the inside of the furnace, the convolution oxygen supply port 12 is evenly arranged around the circumference of the side wall of the furnace body 1, the axial direction of the convolution oxygen supply port 12 and the tangent line of the side wall of the furnace body 1 form an included angle of 30 degrees, the included angle is inclined downwards by 30 degrees, and a pair of opposite auxiliary burners 13 is arranged on the furnace wall above the convolution oxygen supply port.

The burning material, namely the fluorine-containing hazardous waste, is thrown onto the hearth from the feeding hole, and then the pyrolysis burning process is carried out on the burning material in a way that the burning material horizontally moves towards the spiral moving track of the center of the hearth. The whole process drives the rotating arm to rotate by the power device to provide power, and the whole material moves from the periphery of the hearth to the center of a circle in the pyrolysis incineration process and needs to sequentially pass through a drying area, a pyrolysis area, an incineration area and a cooling area. And a second ventilation cover 7 is arranged at the part where the spiral track intersects with the arrangement point of the ventilation covers, and the rest ventilation covers are first ventilation covers 6. The stirring rod moves between the ventilation covers and cannot interfere with the ventilation covers.

The combustion-supporting air supplies oxygen from the bottom air box, the combustion-supporting air firstly enters the bottom oxygen supply pipe and then passes through the vertical oxygen supply channel, and part of the combustion-supporting air is obliquely discharged downwards from the first oxygen supply hole 61 of the first ventilation cover to supply oxygen for supporting combustion in the fluorine-containing hazardous waste accumulated at the bottom of the hearth, so that the material is prevented from flowing backwards; another part of the air is supplied from the second oxygen supply hole 73 and the third oxygen supply hole 74 of the second venting cover. The useless through-hole 71 that passes through of fluorine-containing danger is moved forward, avoids being blockked by the vent flap, and the material is owing to be propulsive in succession, and the material in the rear can promote the material in the place ahead and pass through the through-hole, can not pile up in the through-hole, and the air that blows off in the third oxygen feed hole 74 also provides the power that makes the material release, and the bottom slope is with higher speed the material and is left the through-hole. Because the bottom oxygen supply pipe sets up in the hearth, at the incineration process, the bottom oxygen supply pipe can not receive the corruption, and only hearth, ventilation lid and puddler surface contact contain fluorine danger useless, and hearth, ventilation lid are as corrosion-resistant component, and the corrosion rate is slower, and because ventilation lid and puddler are removable the connection, it is very convenient to change the maintenance, corrodes the attenuation after using for a long time when the hearth, only need pour into a mould again to original thickness can.

The materials in the drying area are driven by the rotating arm and the stirring rod, the water is evaporated, and meanwhile, the fluorine-containing hazardous waste edge slowly moves in a spiral manner while being dried towards the center of the hearth; after the fluorine-containing hazardous waste is dried, the temperature of the fluorine-containing hazardous waste rises, volatile substances in the fluorine-containing hazardous waste start to be evaporated and released into a hearth, and the fluorine-containing hazardous waste also moves to a pyrolysis area according to a spiral track under the action of a rotating arm; organic matters in the fluorine-containing hazardous waste in the pyrolysis area are thermally decomposed to simultaneously form pyrolysis gas and pyrolysis carbide. These combustible volatiles and pyrolysis gases are burned together with combustion air blown out from the vent cover. The swinging boom stirs rotatoryly on the hearth with the speed of minute number of revolutions, forms the space between puddler and the useless fluorine-containing danger, and the useless rapid mummification of fluorine-containing danger is by the useless surface of mummification fluorine-containing danger continuous stir-fry renewal all the time to make combustible pyrolysis gas evenly produce on the hearth, it is less to correspond the annular tube oxygen supply volume in mummification region and pyrolysis regional scope.

The residual pyrolytic carbide after the combustible gas is completely released in the fluorine-containing hazardous waste enters an incineration area in a hearth under the rotary pushing of the rotary arm to be in an ignition state, the pyrolytic carbide is in contact with air blown out of the oxygen supply hole and starts to burn while being stirred, the pyrolytic carbide is stirred while being turned over, and the pyrolytic carbide gradually moves to the center of the hearth along a spiral track while being burnt. The oxygen supply amount of the annular pipe in the range corresponding to the incineration area is increased compared with that of the pyrolysis area so as to ensure full incineration; after the pyrolytic carbide is completely combusted, the pyrolytic carbide is changed into ash, enters a cooling area in a hearth, and is blown out air from an oxygen supply hole for cooling; the cooled ash and slag finally move to the central part of the hearth, are discharged from an ash discharge port, enter a slag discharging device and are conveyed out. The annular pipe in the cooling area has the largest oxygen supply amount because more air is needed to cool the ash, so that on one hand, the temperature of the ash is reduced, the subsequent conveying is convenient, the heat in the ash is recovered, the temperature of combustion air is increased, and auxiliary fuel is saved. When the temperature in the furnace is insufficient, auxiliary fuel such as natural gas and the like can be introduced through the auxiliary burner to support combustion.

The air entering from the rotary oxygen supply port arranged around the furnace wall enables the combustion flame in the furnace to form a rotary state, and the flame rotary flow is more regular, so that the flame can be completely combusted at the upper part of the hearth. The structure principle and the operation working condition of the incinerator are strictly designed according to the principle of controlling dioxin by 3T, and the generation of the dioxin in the incineration process is strictly controlled.

Only the rotating arm and the stirring rod of the incinerator are dynamic structures, and the rest structures are static structures, so that looseness or gaps are not easy to generate in the incineration process, and the corrosion speed is low; the components directly contacted with the fluorine-containing hazardous wastes are made of corrosion-resistant materials, and are convenient to maintain and replace.

Example 2

An incinerator suitable for treating fluorine-containing hazardous waste has substantially the same structure as that of example 1, except that, as shown in FIG. 6, oxygen supply passages are provided in a rotary arm 4 and a stirring rod 41, and a stirring rod oxygen supply port 42 communicating with the oxygen supply passages is provided in the stirring rod 41. The combustion-supporting air is introduced into the oxygen supply channel, and an oxygen supply gas circuit is additionally arranged, so that the distribution of oxygen supply points is wider, and the full combustion is ensured. The size of the oxygen supply port 42 of the stirring rod is gradually increased from top to bottom so as to ensure the oxygen supply amount at the bottom of the material. The stir bar interior 41 in this embodiment is also coated with a corrosion resistant material.

Claims (10)

1. An incinerator suitable for fluorine-containing hazardous waste treatment comprises an incinerator body (1), a hearth (2) is arranged at the bottom of the incinerator body (1), a vertical rotating main shaft (3) is arranged on the hearth (2), a rotating arm (4) which rotates by taking the rotating main shaft as a rotating shaft is arranged on the rotating main shaft (3), a stirring rod (41) extending to the hearth (2) is arranged on the rotating arm (4), it is characterized in that a bottom oxygen supply pipe (5) is arranged in the hearth (2), a first ventilation cover (6) and/or a second ventilation cover (7) are detachably connected on the hearth (2), the first ventilating cover (6) and the second ventilating cover (7) are respectively provided with an oxygen supply channel which is respectively communicated with the oxygen supply pipe (5) at the bottom and the interior of the furnace body (1), the hearth (2), the first ventilation cover (6) and the second ventilation cover (7) are all corrosion-resistant components, the surfaces of the rotating arm (4) and the stirring rod (41) are covered with corrosion-resistant layers.

2. An incinerator suitable for treating fluorine-containing hazardous waste according to claim 1, wherein said bottom oxygen supply pipe (5) comprises a plurality of annular pipes sleeved from inside to outside, and each annular pipe is provided with a plurality of first ventilation covers (6) and/or second ventilation covers (7).

3. An incinerator suitable for treating fluorine-containing hazardous waste according to claim 2, wherein said stirring rods (41) are correspondingly disposed between adjacent ring pipes.

4. An incinerator suitable for treating hazardous waste containing fluorine according to claim 2, wherein the bottom of the incinerator body (1) is provided with an air box, the bottom of each annular pipe is connected with the air box through an air pipe, and the air pipe is provided with a flow control valve.

5. The incinerator for treating hazardous waste containing fluorine according to claim 1, wherein said first ventilation cover (6) is a top-sealed cylinder, and a first oxygen supply hole (61) is formed on the cylinder wall.

6. An incinerator suitable for treating fluorine-containing hazardous waste as claimed in claim 5, wherein said first oxygen supply hole (61) is inclined downwardly from inside to outside.

7. An incinerator suitable for treating fluorine-containing hazardous waste according to claim 1, wherein a through hole (71) is formed in the side wall of the second vent cover (7), a second oxygen supply pipe (72) communicated with the bottom oxygen supply pipe (5) is arranged in the second vent cover (7), a second oxygen supply hole (73) communicated with the second oxygen supply pipe (72) and the interior of the incinerator body (1) respectively is formed in the second vent cover (7), and a third oxygen supply hole (74) communicated with the second oxygen supply pipe (72) and the through hole (71) respectively is further formed in the second vent cover (7).

8. An incinerator suitable for treating hazardous waste containing fluorine according to claim 7, wherein the bottom surface of said through hole (71) is a slope declining toward both ends of said through hole (71).

9. An incinerator suitable for treating hazardous waste containing fluorine according to claim 1, wherein a second oxygen supply channel is provided in the rotary arm (4) and the stirring rod (41) to communicate with the interior of the incinerator body (1).

10. The incinerator suitable for fluorine-containing hazardous waste treatment according to claim 1, wherein the sidewall of the incinerator body (1) is provided with rotary oxygen supply ports (12), the rotary oxygen supply ports (12) are uniformly arranged around the circumferential direction of the sidewall of the incinerator body (1), the axial direction of the rotary oxygen supply ports (12) forms an included angle with the tangential direction of the sidewall of the incinerator body (1), and the axial direction of the rotary oxygen supply ports (12) forms an included angle with the axial direction of the incinerator body (1).

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