CN215766507U - Continuous slag discharge device of plasma furnace - Google Patents
Continuous slag discharge device of plasma furnace Download PDFInfo
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- CN215766507U CN215766507U CN202022867030.6U CN202022867030U CN215766507U CN 215766507 U CN215766507 U CN 215766507U CN 202022867030 U CN202022867030 U CN 202022867030U CN 215766507 U CN215766507 U CN 215766507U
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Abstract
The utility model provides a continuous slag discharging device of a plasma furnace, relates to the field related to plasma dangerous waste treatment technology application equipment, and solves the technical problem that the plasma furnace in the prior art is low in working efficiency due to the fact that an intermittent slag discharging mode is usually adopted. The device comprises a flue gas channel and a slag discharge channel, wherein the flue gas channel and the slag discharge channel are both communicated with a hearth of the plasma furnace, a communicating pipeline is arranged between the flue gas channel and the slag discharge channel, and partial flue gas generated by hazardous wastes in the plasma furnace can enter the communicating pipeline through the slag discharge channel and then flow into the flue gas channel to be discharged. The utility model is used for realizing the uninterrupted slag discharge of the plasma furnace and improving the slag discharge efficiency.
Description
Technical Field
The utility model relates to the field related to plasma treatment hazardous waste technology application equipment, in particular to a continuous slag discharging device of a plasma furnace.
Background
The principle of treating the dangerous waste by using the plasma is to treat the dangerous waste by using a high-temperature plasma torch with the temperature of over 5500 ℃ as a heat source, wherein the reaction temperature can reach 1300-1600 ℃ in the treatment process, and toxic and harmful organic matters in the waste are completely converted into harmless small molecular substances such as CO2, H2O and the like under the conditions of a small amount of air and high temperature. The plasma is high in temperature and in an anoxic environment, so that the generation possibility of dioxin is eliminated, and the dioxin in the feed material is thoroughly cracked. After the waste is treated, the emission of dioxin is far lower than the national regulated emission standard; meanwhile, after non-decomposable inorganic substances, heavy metals and the like in the waste are melted at high temperature, glassy slag can be formed, the glassy slag is inert, non-toxic and free of leaching, and the glassy slag is definitely indicated by national hazardous waste records and does not belong to hazardous waste and can be used for floor tiles, roads, concrete and the like. The harmless treatment and recycling of the dangerous solid waste are realized in the treatment process, and the plasma technology is the best technology for treating the dangerous waste recognized by developed countries at present.
In the current plasma working process, the dangerous waste is heated to 1300-1500 ℃ in the plasma furnace, forms a molten fluid state and is discharged out of the furnace. Because the plasma furnace generally has smaller scale for treating the dangerous waste, less molten substance is generated in the treatment process, for example, the molten substance is continuously discharged outwards, the heat loss in the discharge process cannot be maintained due to the smaller amount of molten substance, and the molten substance can be solidified due to the too fast temperature drop, so that the discharge channel is blocked. Therefore, the plasma furnace is generally operated in a batch discharge mode: the slag discharging port of the furnace body is firstly plugged by refractory materials, when a certain amount of melt in the furnace is accumulated, the blockage of the slag discharging port is cleaned up by a tool manually, and high-temperature slag in the furnace can be discharged.
The applicant has found that the prior art has at least the following technical problems:
(1) the work of blocking the slag discharging port and cleaning the slag discharging port is repeatedly carried out every time materials are discharged, so that the labor intensity is increased, and the danger is high;
(2) because the slag discharge port of the furnace body is blocked by refractory materials, the consumption of raw materials in the working process is increased;
(3) in the slag discharging process, the device needs to be in a stop working state, the continuous operation of the device is also influenced, and the working efficiency is reduced;
(4) in the slag discharging process, part of harmful substances and high-temperature radiation are emitted to the outside, and the working environment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a continuous slag discharging device of a plasma furnace, which aims to solve the technical problem of low working efficiency caused by the fact that the plasma furnace usually adopts an intermittent slag discharging mode in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a continuous slag discharging device of a plasma furnace, which comprises a flue gas channel and a slag discharging channel, wherein the flue gas channel and the slag discharging channel are both communicated with a hearth of the plasma furnace, a communicating pipeline is arranged between the flue gas channel and the slag discharging channel, and part of flue gas generated by hazardous waste in the plasma furnace can enter the communicating pipeline through the slag discharging channel and then is converged into the flue gas channel to be discharged.
Preferably, the slag discharging channel is arranged in a downward inclination mode, and the included angle between the axis of the slag discharging channel and the horizontal plane is 3-5 degrees.
Preferably, the diameter of the slag discharge channel is 50-80 mm, and the axis of the flue gas channel and the axis of the slag discharge channel are in the same vertical plane.
Preferably, the continuous slag discharging device of the plasma furnace further comprises a slag water tank, the slag water tank is communicated with the slag discharging channel, and the end part, far away from the plasma furnace, of the flue gas channel is connected with a flue gas treatment system.
Preferably, a slag discharging pipeline is arranged between the slag discharging channel and the slag water tank and is located below the liquid level of the slag water tank, the slag discharging pipeline is communicated with the communicating pipeline, and the axis of the slag discharging pipeline is located on the same vertical line with the axis of the communicating pipeline.
Preferably, the slag discharging channel protrudes from the communicating pipeline along the axis direction, a blocking part is arranged at the end part, far away from the plasma furnace, of the slag discharging channel, and the blocking part is detachably connected with the slag discharging channel.
Preferably, the communicating pipeline protrudes from the flue gas channel along the axis direction of the communicating pipeline, a blocking part is arranged at the end part of the communicating pipeline far away from the slag discharging pipeline, and the blocking part is detachably connected with the communicating pipeline.
Preferably, the blocking part and the blocking part are both made of transparent glass materials.
Preferably, the inside of the flue gas channel, the inside of the slag discharging channel, the inside of the communicating pipeline and the inside of the slag discharging pipeline are all provided with refractory material layers.
Preferably, the end part of the flue gas channel far away from the plasma furnace is connected with a flue gas treatment system.
The utility model provides a continuous slag discharging device of a plasma furnace, which comprises a flue gas channel and a slag discharging channel, wherein the flue gas channel and the slag discharging channel are both communicated with a hearth of the plasma furnace, a communicating pipeline is arranged between the flue gas channel and the slag discharging channel, part of flue gas generated by hazardous waste in the plasma furnace can enter the communicating pipeline through the slag discharging channel and then is converged into the flue gas channel to be discharged, and the area through which the flue gas passes can be heated due to the high temperature of the flue gas (usually up to 1100-1500 ℃), and when liquid-state molten substances are generated in the furnace, the liquid-state molten substances can flow out of the slag discharging channel which is heated by the flowing flue gas, so that the liquid-state molten substances cannot be solidified in the slag discharging channel, and further stable and continuous slag discharging can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a continuous slagging device of a plasma furnace according to an embodiment of the present invention.
Reference numerals: 1. a plasma furnace; 11. a hearth; 12. a plasma torch; 13. a raw material inlet; 2. a flue gas channel; 3. a slag discharge channel; 4. a communicating pipeline; 5. a slag discharging pipeline; 6. a slag pool; 7. a plugging section; 8. and (6) blocking the part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1, the utility model provides a connecting slag discharging device of a plasma furnace 1, which comprises a flue gas channel 2 and a slag discharging channel 3, wherein the flue gas channel 2 and the slag discharging channel 3 are both communicated with a hearth 11 of the plasma furnace 1, a communicating pipeline 4 is arranged between the flue gas channel 2 and the slag discharging channel 3, and part of flue gas generated by hazardous waste in the plasma furnace 1 can enter the communicating pipeline 4 through the slag discharging channel 3 and then is converged into the flue gas channel 2 for discharging. Because the temperature of the flue gas is higher (usually can reach 1100-.
As an optional implementation mode of the embodiment of the utility model, the slag discharging channel 3 is arranged in a downward inclination mode, the included angle between the axis of the slag discharging channel 3 and the horizontal plane is 3-5 degrees, and the inclination angle can ensure that liquid molten substances cannot stay on the slag discharging channel 3 in the slag discharging process to keep the channel smooth.
Meanwhile, as an optional implementation mode of the embodiment of the utility model, the diameter of the slag discharge channel 3 is 50-80 mm, and a large amount of dust can not be entrained while liquid slag is discharged. The axis of the flue gas channel 2 and the axis of the slag discharging channel 3 are on the same vertical plane, and the flue gas channel 2 is positioned above the slag discharging channel 3.
Considering that part of harmful substances and high-temperature radiation are emitted to the outside to affect the working environment when the slag in the hearth 11 flows out of the slag discharge channel 3 in the slag discharge process, as an optional implementation mode of the embodiment of the utility model, the plasma furnace 1 is connected with the slag discharge device and further comprises a slag water tank 6, the slag water tank 6 is communicated with the slag discharge channel 3, a slag discharge pipeline 5 is arranged between the slag discharge channel 3 and the slag water tank 6, the slag discharge pipeline 5 is communicated with the communication pipeline 4 and is vertically arranged, and the axis of the slag discharge pipeline 5 and the axis of the communication pipeline 4 are positioned on the same vertical line, so that the smooth discharge of smoke and slag is facilitated. Preferably, the slag tapping pipeline 5 is positioned below the liquid level of the slag pool 6, high-temperature slag (liquid molten substance) flows into the water in the slag pool 6 for cooling, and the water in the slag pool 6 plays a sealing role, so that toxic gas can not be diffused to the outside, and the working environment is improved.
As an optional implementation manner of the embodiment of the utility model, the slag discharging channel 3 protrudes from the communicating pipeline 4 along the axial direction of the slag discharging channel, and a blocking part 7 is arranged at the end part of the slag discharging channel 3 far away from the plasma furnace 1, and the blocking part 7 is detachably connected with the slag discharging channel 3. The plugging part 7 is made of transparent materials, so that the flowing condition of liquid slag can be checked through the plugging part 7 in the working process, and the plugging part 7 can be detached to clean the slag discharge channel 3 to keep the smoothness of slag discharge if the slag is blocked.
In addition, the communicating pipe 4 in this embodiment is protruded from the flue gas channel 2 along the axial direction thereof, and the end part of the communicating pipe 4 far away from the slag discharging pipe 5 is provided with a blocking part 8, and the blocking part 8 is detachably connected with the communicating pipe 4. Stifled portion 8 is made by transparent material, in the course of the work, can observe the inside condition of flue gas flue 2 through here, if when blockking up, can pull down stifled portion 8, clear up flue gas flue 2. The plugging portion 7 and the plugging portion 8 in the embodiment can be made of transparent glass, and the plugging portion 7 and the plugging portion 8 are simple in design, convenient to observe and convenient to process faults.
As an optional implementation manner of the embodiment of the utility model, refractory material layers are respectively arranged inside the flue gas duct 2, the slag discharge channel 3, the communication pipeline 4 and the slag discharge pipeline 5, so that heat loss is reduced, and temperature is prevented from being transferred to the surfaces of the flue gas duct 2, the slag discharge channel 3, the communication pipeline 4 and the slag discharge pipeline 5.
In addition, the utility model also provides a method for continuously discharging slag by using the plasma furnace 1 connected with the slag discharging device, which comprises the following steps:
s1, placing dangerous waste into the hearth 11 of the plasma furnace 1 through the raw material inlet 13;
s2, the heating source in the plasma furnace 1 starts to operate, and the hazardous waste in the furnace chamber 11 is decomposed by the high temperature action of the heating source and heated to a molten state.
Specifically, in step S2, the heating source is the plasma torch 12. The dangerous waste enters the hearth 11 from the raw material inlet 13 of the plasma furnace 1, and is decomposed, heated and melted under the high-temperature action of plasma. In the process, a certain amount of flue gas can be continuously generated in the hearth 11, most of the generated flue gas flows out through the flue gas channel 2 at the upper part of the plasma furnace 1, and the free end (the end part, far away from the plasma furnace 1, on the flue gas channel 2) of the flue gas channel 2 is connected with a flue gas treatment system, namely, the flue gas flowing out of the flue gas channel 2 can enter the downstream flue gas treatment system. A small part of flue gas enters the communicating pipeline 4 through a slag discharging pipeline at the lower part of the plasma furnace 1 and then is converged into the flue gas channel 2. The area through which the flue gas passes will be heated because the flue gas temperature is high, typically 1100-. At this time, if high-temperature slag flows through the slag discharging channel 3, the slag discharging channel 3 is heated by the flue gas, so that the slag does not solidify, and then the slag flows into the slag water pool 6 for cooling.
Compared with the intermittent deslagging mode of the plasma furnace 1, the continuous deslagging method provided by the utility model can continuously discharge high-temperature molten slag in the operation process of the plasma furnace, is simple to operate, does not need manual work for blocking the deslagging port and cleaning the deslagging port, reduces the labor intensity, is safe and reliable, improves the deslagging efficiency, reduces the consumption of related raw materials in the working process, prevents harmful substances from leaking out due to the fact that the whole process is processed in a sealed state, and improves the working environment.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A continuous slag discharging device of a plasma furnace is characterized by comprising a flue gas channel and a slag discharging channel, wherein,
the gas flue and the slag discharge channel are both communicated with a hearth of the plasma furnace, a communicating pipeline is arranged between the gas flue and the slag discharge channel, and partial gas generated by hazardous wastes in the plasma furnace can enter the communicating pipeline through the slag discharge channel and then is converged into the gas flue to be discharged;
the slag discharging channel is arranged in a downward inclination mode, and the included angle between the axis of the slag discharging channel and the horizontal plane is 3-5 degrees; the diameter of the slag discharge channel is 50-80 mm, and the axis of the flue gas channel and the axis of the slag discharge channel are in the same vertical plane.
2. The plasma furnace continuous slag discharging device according to claim 1, further comprising a slag water tank, wherein the slag water tank is communicated with the slag discharging passage.
3. The continuous deslagging device of the plasma furnace according to claim 2, wherein a deslagging pipeline is arranged between the deslagging channel and the slag pool, the deslagging pipeline is located below the liquid level of the slag pool, the deslagging pipeline is communicated with the communicating pipeline, and the axis of the deslagging pipeline and the axis of the communicating pipeline are located on the same vertical line.
4. The continuous slag discharging device of the plasma furnace according to claim 3, wherein the slag discharging channel protrudes from the communicating pipeline along the axial direction of the slag discharging channel, and a blocking part is arranged at the end part of the slag discharging channel far away from the plasma furnace, and the blocking part is detachably connected with the slag discharging channel.
5. The continuous deslagging device of the plasma furnace according to claim 4, wherein the communicating pipeline protrudes from the flue gas channel along the axial direction of the communicating pipeline, and a blockage part is arranged at the end part of the communicating pipeline far away from the deslagging pipeline, and the blockage part is detachably connected with the communicating pipeline.
6. The continuous slag discharging device of the plasma furnace according to claim 5, wherein the blocking portion and the blocking portion are made of transparent glass material.
7. The continuous deslagging device of the plasma furnace according to claim 3, wherein a refractory material layer is arranged inside the flue gas channel, inside the deslagging channel, inside the communicating pipeline and inside the deslagging pipeline.
8. The continuous deslagging device of the plasma furnace according to claim 1, wherein a flue gas treatment system is connected to an end of the flue gas channel far away from the plasma furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867030.6U CN215766507U (en) | 2020-12-02 | 2020-12-02 | Continuous slag discharge device of plasma furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867030.6U CN215766507U (en) | 2020-12-02 | 2020-12-02 | Continuous slag discharge device of plasma furnace |
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| Publication Number | Publication Date |
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| CN215766507U true CN215766507U (en) | 2022-02-08 |
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| CN202022867030.6U Active CN215766507U (en) | 2020-12-02 | 2020-12-02 | Continuous slag discharge device of plasma furnace |
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Denomination of utility model: Continuous slag discharge device of plasma furnace Effective date of registration: 20230712 Granted publication date: 20220208 Pledgee: China Construction Bank Corporation Dalian Xinghai Plaza sub branch Pledgor: DALIAN YISHUN GREEN TECHNOLOGY CO.,LTD. Registration number: Y2023210000173 |