CN216557141U - A preliminary treatment burns device for hazardous waste handles - Google Patents
A preliminary treatment burns device for hazardous waste handles Download PDFInfo
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- CN216557141U CN216557141U CN202220071965.XU CN202220071965U CN216557141U CN 216557141 U CN216557141 U CN 216557141U CN 202220071965 U CN202220071965 U CN 202220071965U CN 216557141 U CN216557141 U CN 216557141U
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- hearth
- hazardous waste
- slag
- rotary kiln
- feeding channel
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Abstract
The utility model discloses a pretreatment incineration device for hazardous waste treatment, which comprises a vertical rotary kiln, wherein the vertical rotary kiln is provided with a rotary kiln inlet and a rotary kiln outlet; the vertical rotary kiln is provided with a hearth, a rotary grate, a tail gas discharge pipe, a slag discharging pool and a feeding channel; the hearth is positioned in the middle of the vertical rotary kiln; the output end of the feeding channel is communicated with the top of the hearth, and the feeding channel is used for inputting the dangerous waste to be incinerated into the hearth; the bottom end of the rotary grate is arranged at the bottom of the hearth, and the upper end of the rotary grate rotates upwards and extends and is close to the input end of the feeding channel; the top end of the hearth is communicated with the bottom end of a tail gas discharge pipe, and the top end of the tail gas discharge pipe is used for being connected with a secondary combustion chamber outwards to discharge waste gas for burning hazardous wastes; the slag discharging pool is arranged below the hearth, and the hearth is communicated with the slag discharging pool to discharge slag for burning hazardous wastes; the hazardous waste of the solid-liquid mixture with low flash point and high viscosity discharged by the existing enterprises can be decomposed into waste gas and slag through incineration pretreatment, so that the phenomenon that the hazardous waste incineration treatment process is not smooth is avoided.
Description
Technical Field
The utility model belongs to the technical field of hazardous waste treatment equipment, and particularly relates to a pretreatment incineration device for hazardous waste treatment.
Background
With the continuous development of industrial technology and the strengthening of national environmental protection policies, the hazardous waste discharged by enterprises is formed into a solid-liquid mixture with low flash point and high viscosity, so that the difficulty of subsequent treatment of the hazardous waste is increased.
The solid-liquid mixture with low flash point and high viscosity is generally subjected to subsequent treatment by a hazardous waste harmless treatment device or SMP (symmetrical multi processing) device in the prior art. Before the hazardous waste harmless treatment equipment or SMP equipment in the prior art is used, the solid-liquid mixture with low flash point and high viscosity needs to be classified, and the classification method adopts manual mixing and subpackage treatment, so that the operators need to be exposed in the hazardous waste environment for a long time, the operation risk is high, the working efficiency is extremely low, and the labor cost and the extreme waste of packaging materials exist.
However, if classification and packaging are not carried out, hazardous waste is subjected to harmless treatment in the prior art, so that the secondary combustion chamber and the horizontal rotary kiln are easily subjected to non-combustion of hazardous waste, the inner wall of the furnace hearth has the condition that the unburnt hazardous waste is hung on the wall, slag at a slag discharge port can also be agglomerated and blocked, the hazardous waste treatment process is not smooth, even equipment is paralyzed, and the discharged hazardous waste has the risk of secondary pollution to the environment.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects, the utility model aims to provide a pretreatment incineration device for hazardous waste treatment, which can decompose hazardous waste of solid-liquid mixture with low flash point and high viscosity discharged by the existing enterprises into waste gas and slag through incineration pretreatment, and avoid the phenomena of unsmooth and even paralysis of hazardous waste treatment process caused by incomplete combustion and blocking of slag agglomeration.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pre-treatment incineration device for hazardous waste treatment comprises a vertical rotary kiln;
the vertical rotary kiln is provided with a hearth, a rotary grate, a tail gas discharge pipe, a slag outlet tank and a feeding channel;
the hearth is positioned in the middle of the vertical rotary kiln; the output end of the feeding channel is communicated with the top of the hearth, and the feeding channel is used for inputting the hazardous waste to be incinerated to the hearth; the bottom end of the rotary grate is arranged at the bottom of the hearth, and the upper end of the rotary grate rotates upwards and extends and is close to the input end of the feeding channel;
the top end of the hearth is communicated with the bottom end of the tail gas discharge pipe, and the top end of the tail gas discharge pipe is used for being connected with a secondary combustion chamber outwards to discharge waste gas for incinerating hazardous wastes;
the slag discharging pool is arranged below the hearth, and the hearth is communicated with the slag discharging pool to discharge slag for incinerating hazardous waste.
Furthermore, the device also comprises a hoisting machine;
the lifter is close to the input end of the feeding channel and used for conveying the hazardous waste to be incinerated upwards from the ground.
Further, the device also comprises a shredder;
the shredder is mounted between the elevator and the input end of the infeed channel.
Further, the shredder is a box-type double-shaft shredder;
the shredder is provided with two shredding shafts, the bottom of each shredding shaft is provided with a feeding gate valve, and the hazardous wastes to be incinerated are shredded and then are fed into the feeding channel through the feeding gate valve.
Further, a feeding bin is arranged at the top of the shredder and is provided with a nitrogen input pipe;
during operation, the feed bin is filled with nitrogen.
Further, a slag discharge gate valve is arranged at the bottom of the hearth, and the hearth is communicated with the slag discharging pool through the slag discharge gate valve and discharges slag incinerating dangerous waste;
and a water-seal deslagging mechanism is arranged in the deslagging pool and is connected with an input port of the horizontal rotary kiln.
Furthermore, a rotating mechanism is also arranged;
the rotating mechanism is arranged at the bottom of the hearth and is positioned above the slag discharge gate valve;
the top surface of the rotating mechanism is connected with the rotating grate, and the rotating mechanism drives the rotating grate to horizontally rotate in the hearth.
Furthermore, a burner is also arranged;
the head end of the combustor stretches into the bottom of the hearth, an oxygen and power-assisted air input port is arranged on the outer side face of the combustor, and a fuel input port is arranged at the tail end of the combustor.
Preferably, the combustion temperature in the hearth is 300-630 ℃.
Preferably, the inner wall of the hearth is a conical surface with a small upper part and a large lower part.
The technical scheme of the utility model has the beneficial effects that: the pretreatment incineration device for hazardous waste treatment can decompose hazardous waste of solid-liquid mixture with low flash point and high viscosity discharged by the existing enterprises into waste gas and slag through incineration pretreatment, so that the phenomena of unsmooth and even paralysis of hazardous waste treatment process caused by burning impermeability and blocking of slag agglomeration are avoided.
Drawings
FIG. 1 is a schematic view showing the construction of a pre-treatment incineration apparatus for hazardous waste treatment according to an embodiment of the present invention;
fig. 2 is a schematic view of the structure of a vertical rotary kiln according to an embodiment of the present invention;
FIG. 3 is a schematic view of the mounting structure of the shredder according to one embodiment of the present invention;
FIG. 4 is a schematic structural view of a shredder according to an embodiment of the present invention;
wherein: a hoist 1; a shredder 2; a vertical rotary kiln 3; a feeding gate valve 21; a feed bin 22; a shredding shaft 23; a furnace chamber 31; a rotating grate 32; an exhaust gas discharge pipe 33; a slag tapping basin 34; a feed channel 35; a rotating mechanism 36; a burner 37; a nitrogen gas input pipe 221; a slag discharge gate valve 311.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the attached fig. 1-4.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
A pre-treatment incineration apparatus for hazardous waste treatment includes a vertical rotary kiln 3;
the vertical rotary kiln 3 is provided with a hearth 31, a rotary grate 32, a tail gas discharge pipe 33, a slag discharging pool 34 and a feeding channel 35;
the hearth 31 is positioned in the middle of the vertical rotary kiln 3; the output end of the feeding channel 35 is communicated with the top of the hearth 31, and the feeding channel 35 is used for inputting the dangerous waste to be incinerated to the hearth 31; the bottom end of the rotary grate 32 is arranged at the bottom of the hearth 31, and the upper end of the rotary grate 32 extends upwards in a rotating way and is close to the input end of the feeding channel 35;
the top end of the hearth 31 is communicated with the bottom end of the tail gas discharge pipe 33, and the top end of the tail gas discharge pipe 33 is used for being connected with a secondary combustion chamber outwards to discharge waste gas for incinerating hazardous wastes;
the slag discharging pool 34 is arranged below the hearth 31, and the hearth 31 is communicated with the slag discharging pool 34 to discharge slag for incinerating hazardous waste.
As shown in fig. 1-3, the pretreatment incineration device for hazardous waste treatment of the present invention, the vertical rotary kiln 3 with the rotary grate 32 therein has the advantages of more sufficient combustion and small occupied space compared with the horizontal rotary kiln of the prior art, can decompose the hazardous waste of the solid-liquid mixture with low flash point and high viscosity discharged by the existing enterprises into the waste gas and the slag through incineration pretreatment, can respectively treat the waste gas and the slag by using the secondary combustion chamber and the horizontal rotary kiln in the hazardous waste treatment equipment of the prior art, can avoid the phenomena of unsmooth and even paralysis of the hazardous waste treatment process caused by baking-free and slag-blocking, and can burn the hazardous waste suitable for the solid-liquid mixture with low flash point and high viscosity of the hazardous waste treatment equipment of the prior art by supplementing the pretreatment incineration device for hazardous waste treatment of the present invention, and the process requirements of manual mixing and subpackage treatment can be reduced, so that the labor cost and the extreme waste of packaging materials are avoided.
Further, the system also comprises a hoisting machine 1;
the elevator 1 is arranged close to the input end of the feed channel 35, and the elevator 1 is used for conveying the dangerous waste to be incinerated from the ground upwards.
As shown in fig. 1, hazardous waste to be incinerated is raised by the lifter 1 and introduced into the furnace 31 through the feed channel 35 for pretreatment incineration.
Further, a shredder 2 is also included;
the shredder 2 is mounted between the elevator 1 and the input of the infeed channel 35.
As shown in FIGS. 1 and 3, the incineration efficiency of the incineration pretreatment can be improved by shredding the hazardous waste to be incinerated together with the packaged plastic can into blocks 3-5cm wide and 10-13cm long by means of a shredder 2.
Further, the shredder 2 is a box-type double-shaft shredder;
the shredder 2 is provided with two shredding shafts 23, the bottom of each shredding shaft 23 is provided with a feeding gate valve 21, and the dangerous waste to be incinerated is shredded and then is fed into the feeding channel 35 through the feeding gate valve 21.
As shown in fig. 3 and 4, the box type twin-shaft shredder is anti-tangling, smoothly mincing the hazardous waste to be incinerated into sheets, thereby improving the incineration efficiency of the preliminary treatment incineration apparatus.
Further, a feeding bin 22 is arranged at the top of the shredder 2, and the feeding bin 22 is provided with a nitrogen input pipe 221;
in operation, the feed bin 22 is filled with nitrogen.
As shown in fig. 3, the hazardous waste to be incinerated can be prevented from being burned or exploded upon shredding by filling nitrogen gas, thereby preventing accidents from occurring.
Further, a slag discharge gate valve 311 is arranged at the bottom of the furnace chamber 31, and the furnace chamber 31 is communicated with the slag outlet tank 34 through the slag discharge gate valve 311 and discharges slag incinerating hazardous waste;
and a water-seal slag discharging mechanism is arranged in the slag outlet tank 34 and is connected with an input port of the horizontal rotary kiln.
As shown in fig. 1 and 2, after the pre-treatment incineration of the hazardous waste is completed, the remaining slag is discharged into the slag discharging tank 34 by opening the slag discharging gate valve 311, and then the slag is conveyed to the horizontal rotary kiln through the water seal slag discharging mechanism or conveyed to the post-treatment equipment for treatment after being crushed and cooled.
Further, a rotating mechanism 36 is also arranged;
the rotating mechanism 36 is installed at the bottom of the furnace chamber 31, and the rotating mechanism 36 is located above the slag discharge gate valve 311;
the top surface of the rotating mechanism 36 is connected with the rotating grate 32, and the rotating mechanism 36 drives the rotating grate 32 to horizontally rotate in the hearth 31.
As shown in FIGS. 1 and 2, the rotary grate 32 is driven by the rotary mechanism 36 to rotate horizontally in the hearth 31, so that the hazardous waste in the combustion is agitated, the hazardous waste can be combusted more sufficiently, and the residue of unburned substances is reduced.
Further, a burner 37 is also provided;
the head end of the combustor 37 extends into the bottom of the hearth 31, the outer side surface of the combustor 37 is provided with an oxygen and power-assisted air input port, and the tail end of the combustor 37 is provided with a fuel input port.
As shown in fig. 1 and 2, the hazardous waste can be sufficiently burned by the oxygen and the boosting wind inputted through the burner 37, and the hazardous waste of the solid-liquid mixture with low flash point and high viscosity has a high calorific value and contains a large amount of combustible materials, and generally, no fuel is required to be added.
Preferably, the combustion temperature in the hearth 31 is 300-630 ℃.
The combustion temperature is controlled to be 300-630 ℃, so that the hazardous waste of the solid-liquid mixture with low flash point and high viscosity can be quickly pretreated and incinerated, the difficulty of post-treatment is reduced, dioxin can be prevented from being generated in the flue gas at 350-500 ℃, and the risks of toxic substance generation and secondary pollution are reduced.
Preferably, the inner wall of the hearth 31 is a conical surface with a small top and a large bottom.
As shown in figures 1 and 2, the inner wall of the hearth 31 is a conical surface with a small upper part and a large lower part, so that the risk of accumulation and sintering of dangerous wastes on the inner wall surface in incineration can be effectively reduced, and the risk of silting is reduced.
In summary, as shown in the embodiments of the present invention shown in fig. 1 to 4, the pretreatment incinerator for hazardous waste treatment can decompose the hazardous waste of the solid-liquid mixture with low flash point and high viscosity discharged by the existing enterprises into waste gas and slag through incineration pretreatment, so as to avoid the phenomena of unsmooth and even paralysis of the hazardous waste treatment process caused by incomplete combustion and blocking of slag lumps.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. A pre-treatment incineration device for hazardous waste treatment is characterized by comprising a vertical rotary kiln;
the vertical rotary kiln is provided with a hearth, a rotary grate, a tail gas discharge pipe, a slag outlet tank and a feeding channel;
the hearth is positioned in the middle of the vertical rotary kiln; the output end of the feeding channel is communicated with the top of the hearth, and the feeding channel is used for inputting the hazardous waste to be incinerated to the hearth; the bottom end of the rotary grate is arranged at the bottom of the hearth, and the upper end of the rotary grate rotates upwards and extends and is close to the input end of the feeding channel;
the top end of the hearth is communicated with the bottom end of the tail gas discharge pipe, and the top end of the tail gas discharge pipe is used for being connected with a secondary combustion chamber outwards to discharge waste gas for incinerating hazardous wastes;
the slag discharging pool is arranged below the hearth, and the hearth is communicated with the slag discharging pool to discharge slag for incinerating hazardous waste.
2. The pre-treatment incineration device for hazardous waste treatment according to claim 1, further comprising an elevator;
the lifter is close to the input end of the feeding channel and used for conveying the hazardous waste to be incinerated upwards from the ground.
3. The pre-treatment incineration device for hazardous waste treatment according to claim 2, further comprising a shredder;
the shredder is mounted between the elevator and the input end of the infeed channel.
4. The pre-treatment incineration device for hazardous waste treatment according to claim 3, wherein the shredder is a box-type twin-shaft shredder;
the shredder is provided with two shredding shafts, the bottom of each shredding shaft is provided with a feeding gate valve, and the hazardous wastes to be incinerated are shredded and then are fed into the feeding channel through the feeding gate valve.
5. The pre-treatment incineration device for hazardous waste treatment according to claim 3, wherein a top of the shredder is provided with a feed bin, the feed bin being provided with a nitrogen gas input pipe;
during operation, the feed bin is filled with nitrogen.
6. The pretreatment incineration device for hazardous waste treatment according to claim 1, wherein a slag discharge gate valve is provided at the bottom of the furnace, the furnace communicates with the slag tapping basin through the slag discharge gate valve and discharges slag incinerating hazardous waste;
and a water-seal deslagging mechanism is arranged in the deslagging pool and is connected with an input port of the horizontal rotary kiln.
7. The pre-treatment incineration device for hazardous waste treatment according to claim 6, further provided with a rotation mechanism;
the rotating mechanism is arranged at the bottom of the hearth and is positioned above the slag discharge gate valve;
the top surface of the rotating mechanism is connected with the rotating grate, and the rotating mechanism drives the rotating grate to horizontally rotate in the hearth.
8. The pretreatment incineration device for hazardous waste treatment according to claim 6, further provided with a burner;
the head end of the combustor stretches into the bottom of the hearth, an oxygen and power-assisted air input port is arranged on the outer side face of the combustor, and a fuel input port is arranged at the tail end of the combustor.
9. The pretreatment incineration device for hazardous waste treatment according to claim 1, wherein a combustion temperature in the furnace is 300 ℃ to 630 ℃.
10. The pre-treatment incineration device for hazardous waste treatment according to claim 1, wherein the inner wall of the hearth is a tapered surface with a small top and a large bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220071965.XU CN216557141U (en) | 2022-01-12 | 2022-01-12 | A preliminary treatment burns device for hazardous waste handles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220071965.XU CN216557141U (en) | 2022-01-12 | 2022-01-12 | A preliminary treatment burns device for hazardous waste handles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216557141U true CN216557141U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220071965.XU Active CN216557141U (en) | 2022-01-12 | 2022-01-12 | A preliminary treatment burns device for hazardous waste handles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216557141U (en) |
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2022
- 2022-01-12 CN CN202220071965.XU patent/CN216557141U/en active Active
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