CN216143735U - Cooling wall of plasma gasification melting furnace - Google Patents
Cooling wall of plasma gasification melting furnace Download PDFInfo
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- CN216143735U CN216143735U CN202121982771.7U CN202121982771U CN216143735U CN 216143735 U CN216143735 U CN 216143735U CN 202121982771 U CN202121982771 U CN 202121982771U CN 216143735 U CN216143735 U CN 216143735U
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- 238000001816 cooling Methods 0.000 title claims abstract description 100
- 238000002844 melting Methods 0.000 title claims abstract description 28
- 230000008018 melting Effects 0.000 title claims abstract description 28
- 238000009272 plasma gasification Methods 0.000 title claims abstract description 22
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 22
- 239000000498 cooling water Substances 0.000 description 10
- 229910001018 Cast iron Inorganic materials 0.000 description 8
- 239000011449 brick Substances 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007774 longterm Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009970 fire resistant effect Effects 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000010431 corundum Substances 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
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- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a cooling wall of a plasma gasification melting furnace, and belongs to the technical field of plasma gasification melting furnace devices. The cooling wall comprises a cooling wall body, wherein a corundum-mullite refractory layer is integrally cast and formed in a full-covering mode on one side, facing the inside of the furnace, of the cooling wall body, a heat exchange layer formed by splicing a plurality of cooling heat exchange plates is arranged in a full-covering mode in a positioning mode on one side, facing the outside of the furnace, of the cooling wall body, and an external heat insulation layer is arranged in a full-covering mode in a positioning and covering mode on one side, facing the outside of the furnace, of the heat exchange layer. The cooling wall can resist fire, high temperature, abrasion and long service life for a long time, the cooling heat exchange plate is easy to replace and maintain in the later period, the economy is good, and the manufacturing cost is low.
Description
Technical Field
The utility model relates to a cooling wall, in particular to a cooling wall of a plasma gasification melting furnace, and belongs to the technical field of plasma gasification melting furnace devices.
Background
The cooling wall is a cooler form commonly adopted in the incinerator at present, and the operating principle is that heat in the incinerator is led out through surface cooling, so that high-temperature heat flow reaches the furnace shell after the hearth burns for a long time, and the furnace shell is broken. In order to significantly prolong the service life of the cooling wall burned in the furnace, a material which is not easy to crack and wear and corrode is required to be used as the cooling wall, and the cooling walls of the common combustion furnaces in the market at present are divided into cast iron cooling walls, copper cooling walls, steel-copper composite cooling walls and the like according to different materials, and mainly comprise the cast iron cooling walls and the copper cooling walls.
The traditional cast iron water cooling wall or copper cooling wall which occupies the main stream has the following problems:
the cast iron stave body has a low thermal conductivity, and the thermal conductivity of copper is about 10 times that of cast iron, so copper also has a very low thermal conductivity. On the same cooling wall, the corner part is easy to burn away from the position slightly far away from the cooling water, and the refractory material is easy to damage after being heated after long-term use, so that the whole service life of the cooling wall in the smelting furnace is influenced.
In the cooling process of the cooling wall, the conditions of temperature circulation of cooling water, uneven circulating water constant pressure or abnormal cooling water temperature and the condition that cold materials enter the furnace body can cause the condition of temperature fluctuation in the furnace, further cause heat preservation and temperature attenuation in the furnace, further shorten the service life of refractory materials and accelerate the service life of material abrasion.
In the casting process of the cooling wall body, the cooling water pipeline contains carbon element, the carbon element is gradually separated out along with the change of time to cause the leakage of the water pipeline, and in the using process, the leakage is not easy to be monitored and found; even if the anti-carburizing treatment is carried out outside the pipeline, the overall performance between the pipeline and the cooling wall body is also reduced to some extent, so that the heat exchange efficiency of the whole cooling wall is poor.
The traditional cast iron cooling wall has insufficient supporting force on the brick lining, and the brick lining is easy to fall off after being used at high temperature for a long time; when the hearth is damaged and maintained, the hearth needs to be shut down, and the hearth needs to be cooled in advance for safety; meanwhile, the cooling wall in the prior art is high in price, so that the replacement cost is increased, and meanwhile, the maintenance, the overhaul and the installation need longer time.
When dangerous wastes are incinerated in a hearth, if corrosive liquid is met, the lining, the cooling wall and metal in the existing melting furnace are all corroded, so that the service life of the furnace body is shortened, and the long-acting economic value is not achieved.
In addition, the traditional cooling wall is not suitable for the operation of plasma melting, because the temperature of the plasma gun during discharging is as high as 7000 ℃, combustible waste can be instantly heated and gasified, the highest working temperature which can be borne by cast iron is 700-950 ℃, and the heat-resistant temperature of copper is only 1100-1200 ℃. In plasma gasification melting, after materials enter a plasma reaction furnace, the materials are rapidly burned under the action of high temperature (1200 ℃), molten slurry (about 1450-1600 ℃) is gradually formed after melting, and the temperature in the furnace is about 1500 ℃.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides the cooling wall of the plasma gasification melting furnace, which has the advantages of long-term fire resistance, high temperature resistance, wear resistance and long service life, wherein the cooling heat exchange plate is easy to replace and maintain in the later period, and has good economical efficiency and low manufacturing cost.
The technical scheme of the utility model is as follows:
a cooling wall of a plasma gasification melting furnace comprises a cooling wall body, wherein a corundum-mullite refractory layer is integrally cast and formed in a full-covering mode on one side, facing the inside of the furnace, of the cooling wall body, a heat exchange layer formed by splicing a plurality of cooling heat exchange plates is arranged in a full-covering mode in a positioning mode on one side, facing the outside of the furnace, of the cooling wall body, and an external heat insulation layer is arranged in a full-covering mode in a positioning and covering mode on one side, facing the outside of the furnace, of the heat exchange layer.
Preferably, a plurality of positioning concave points are arranged on one side of the cooling wall body facing the outside of the furnace at intervals, positioning convex points corresponding to the positioning concave points are arranged on one side of each cooling heat exchange plate facing the inside of the furnace, and the positioning convex points are positioned and clamped in the positioning concave points, so that the cooling heat exchange plates are fixedly connected to the cooling wall body.
Preferably, each cooling heat exchange plate is internally provided with a heat exchange pipeline for flowing and heat exchanging of a cooling medium.
Preferably, two free ends of the heat exchange pipeline extend out of one side surface of the cooling heat exchange plate facing the outside of the furnace, and the extending part of the heat exchange pipeline is in threaded connection with a water pipe penetrating through the external heat insulation layer.
Preferably, an internal thread is formed on the inner peripheral wall of the extending portion of the heat exchange pipeline, an external thread is formed on the outer peripheral wall of the corresponding water pipe, and the water pipe and the heat exchange pipeline are in threaded connection through the internal thread and the external thread.
Preferably, the water pipe for water inlet and the water pipe for water outlet are respectively arranged at two opposite sides of the furnace body of the plasma gasification melting furnace.
Preferably, the surface of one side of the corundum-mullite refractory layer facing the inside of the furnace is a smooth surface.
Preferably, the cooling wall body is a high-temperature-resistant cast steel pouring formed part.
The beneficial technical effects of the utility model are as follows:
1. the cooling wall adopts a full-coverage type cooling wall, the corundum-mullite fire-resistant layer and the cooling wall body adopt an integrated pouring molding structure, the brick wall is combined, so that the working surface is completely covered by the fire-resistant layer, the furnace capacity can be enlarged, and the furnace temperature in the furnace body can be kept in a stable state with small fluctuation and stable temperature attenuation by utilizing the characteristic of the corundum-mullite fire-resistant layer.
2. The corundum-mullite refractory layer is not easy to react with the products to be sintered and carbon elements in the pipeline, and the probability of corrosion leakage of the cooling water pipe is reduced.
3. One side of corundum mullite flame retardant coating in this application towards the furnace body is the smooth surface, combines the characteristic of this flame retardant coating, can guarantee that the condition of wall built-up does not appear in the material that falls into furnace.
4. In the application, the cooling wall body is poured by high-temperature cast iron, and then the corundum-mullite refractory layer is combined, so that the refractory temperature of the whole cooling wall can reach the furnace temperature of the plasma gasification melting furnace, and the technical problem that the cooling wall can not be used for a long time in the prior art is solved.
Drawings
FIG. 1 is a schematic view of a plasma melting furnace structure using a stave of the present invention;
FIG. 2 is a schematic view of the structure of the stave of the present invention;
wherein:
1. a corundum-mullite refractory layer;
2. a stave body; 21. positioning the concave points;
3. cooling the heat exchange plate; 31. positioning the salient points; 32. a heat exchange conduit;
4. a water pipe;
6. an outer insulation layer.
Detailed Description
In order to make the technical means of the present invention clearer and to make the technical means of the present invention capable of being implemented according to the content of the specification, the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples, which are provided for illustrating the present invention and are not intended to limit the scope of the present invention.
The specific embodiment describes a cooling wall of a plasma gasification melting furnace in detail, the cooling wall comprises a cooling wall body 2, a corundum-mullite refractory layer 1 is integrally cast and formed in a full-covering mode on one side, facing the inside of the furnace, of the cooling wall body, a heat exchange layer formed by splicing a plurality of cooling heat exchange plates 3 is positioned and arranged in a full-covering mode on one side, facing the outside of the furnace, of the cooling wall body, and an external heat insulation layer 6 is wrapped and arranged in a full-covering mode on one side, facing the outside of the furnace, of the heat exchange layer.
In the structure, the corundum-mullite refractory layer 1 and the cooling wall body 2 are integrally cast and formed in a fixed mode, so that a brick wall is integrated between the refractory layer and the cooling wall body, the working face is completely covered by the refractory layer, the internal capacity of the furnace body can be enlarged, the dead angle of the working face can be guaranteed, and uneven heating is avoided.
The corundum-mullite refractory layer is cast and molded by using corundum-mullite castable, and the corundum-mullite castable is a material formed by taking porous corundum-mullite aggregate as a main raw material and adding fine powder, an additive and water through stirring. The corundum-mullite aggregate in the corundum-mullite castable has the advantages of high-temperature resistance, thermal shock resistance, structural stripping resistance, thermal shock resistance, high refractoriness under load, small high-temperature creep rate, good chemical corrosion resistance and the like, and belongs to an ideal refractory brick material. In addition, according to the analysis of the physical properties of the corundum-mullite aggregate (see table 1), the heat conductivity of the corundum-mullite material is higher along with the increase of the temperature, and through research, when the heat conductivity of the product is higher, the heat conduction efficiency is faster, so that the cooling effect of the cooling wall is better; and under the high temperature state for a long time, the indexes of the compressive strength and the volume density are gradually increased along with the temperature rise, which shows that the compressive strength of the material is high after heating, wherein the refractoriness under load indicates that the thermal shock resistance is excellent. Moreover, the corundum-mullite material has good chemical stability, is not easy to react with a product to be burnt, needs to use a cooling water pipeline in the process of casting the cooling wall, considers the cost performance of the pipeline, generally contains carbon element in the material, is not easy to generate chemical reaction with the corundum-mullite material, can avoid the condition of poor heat exchange performance, and simultaneously reduces the probability of corrosion leakage of the cooling water pipe because the material between the corundum-mullite material and the corundum-mullite material is not easy to generate chemical reaction.
When the corundum-mullite refractory layer is used as a heat insulation protection material on the inner side of the plasma furnace, the surface of one side, facing the inside of the plasma furnace, of the corundum-mullite refractory layer 1 is designed to be a smooth surface, and the smooth surface is combined with the condition that the temperature in a hearth is continuously higher than 1500 ℃ during incineration, so that the condition that the materials falling into the hearth are hung on the wall can be avoided. The supporting force of the cooling wall using the corundum-mullite to the brick lining is increased, the brick lining can withstand the long-term high-temperature working condition of the melting furnace, and in the long-term high-temperature environment, the corundum-mullite material has stable adhesion to the cooling wall body, so that the service life of the melting furnace can be prolonged.
Because when feeding in to the furnace body at every turn, the furnace temperature receives the entering of cold material and can produce certain fluctuation, receives the water cooling of the outside cooling heat transfer board of stave body simultaneously, can cause the furnace temperature to change more obviously, and uses this application corundum mullite flame retardant coating and stave body integrated into one piece's technical scheme of pouring, can guarantee that this stave has certain heat preservation effect and temperature attenuation. The corundum-mullite castable has high fluidity, is suitable for construction by a pouring method, is an amorphous refractory material which can be hardened without heating, can be generally poured and formed by a pouring, vibrating or tamping method on site, and can also be made into a prefabricated part for use.
TABLE 1 physical characteristics analysis table of corundum-mullite material
| Sorting temperature (. degree. C.) | 1400 | 1550 | 1600 |
| Al2O3(％)≥ | 50～70 | 65～70 | 79 |
| Fe2O3(％)≤ | 0.5 | 0.5 | 0.5 |
| Bulk Density (g/cm)3) | 0.8 | 1 | 1.2 |
| Normal temperature compressive strength (MPa) | 3 | 5 | 7 |
| Thermal conductivity (350 ℃ C.) W/(mk) | 0.25 | 0.33 | 0.42 |
| Refractoriness under load (. degree.C.) (0.2MPa, 0.6%) | 1400 | 1500 | 1600 |
| Percent change of reburning line (1400 ℃ X3 h) | ≤0.9 | ≤0.7 | ≤0.5 |
| Long term service temperature (. degree. C.) | 1200～1500 | 1200～1550 | 1500～1700 |
The cooling wall body 2 is a high-temperature-resistant cast steel pouring formed part.
In the structure, the connection and fixation between the cooling wall body 2 and the cooling heat exchange plate 3 is realized by adopting a mode of matching, positioning and clamping a positioning concave point and a positioning convex point. Specifically, a plurality of positioning concave points 21 are arranged on one side of the cooling wall body 2 facing the outside of the furnace at intervals, positioning convex points 31 corresponding to the positioning concave points are arranged on one side of each cooling heat exchange plate 3 facing the inside of the furnace, and the positioning convex points are positioned and clamped in the positioning concave points, so that the cooling heat exchange plates are fixedly connected to the cooling wall body. The positioning clamp is designed to realize the clamping fixation between the positioning concave points and the positioning convex points by utilizing the principle of expansion with heat and contraction with cold.
The positioning concave points on the cooling wall body 2 are formed by adding a plurality of positioning concave points after calculating positions on the outer surface of the cooling wall when the cooling wall body 2 is integrally cast and formed, and the positioning concave points are synchronously cast and formed on the cooling wall body. The formation of the positioning salient points on the cooling heat exchange plate 3 is to add the calculated corresponding positioning salient points in the casting process of the cooling heat exchange plate, and the adding mode can be integral forming, and can also be welding or other fixed connection modes. The setting of location concave point and location bump on every cooling heat transfer board can be fixed this cooling heat transfer board when the installation of cooling heat transfer board, increases the accuracy of location and the firmness of contact, can also increase the contact heat transfer area when the stove courage uses simultaneously, and convenient change alone and maintenance.
In the structure, between the heat exchange layer formed by splicing the cooling heat exchange plates and the external heat insulation layer 6, the conventional external heat insulation layer 6 is directly coated outside the heat exchange layer, and the coating mode is a conventional technical means in the field and is not repeated in the application. The external heat-insulating layer can adopt heat-insulating materials commonly used in the field, which is also a conventional technical means in the field, and is not described in detail in the application. The external heat-insulating layer is used as a heat-insulating material outside the plasma furnace, so that the working temperature in a hearth is more stable while the incineration safety can be further ensured in the use process of the plasma furnace, and radiation heat dissipation is not generated.
In the above structure, each cooling heat exchange plate 3 is provided with a heat exchange pipe 32 for flowing and heat exchanging of a cooling medium. The two free ends of the heat exchange pipe 32 extend out of one side of the cooling heat exchange plate facing the outside of the furnace, and the extending part of the heat exchange pipe is in threaded connection with a water pipe 4 penetrating through an external heat insulation layer 6. The specific threaded connection mode is as follows: an internal thread is arranged on the inner peripheral wall of the extending part of the heat exchange pipeline 32, an external thread is arranged on the outer peripheral wall of the corresponding water pipe 4, and the water pipe and the heat exchange pipeline are in threaded connection through the internal thread and the external thread. In the two water pipes, one water pipe for water inlet is a cooling water inlet end, the other water pipe for water outlet is a cooling water outlet end, the two water pipes are respectively arranged at two opposite sides of the furnace body of the plasma gasification melting furnace, and the two water pipes and the heat exchange pipeline use the circulated cooling water, so that on one hand, the cost can be saved, and on the other hand, the heat generated by cold-heat conversion can be reused after being transferred. And the heat exchange pipeline is in butt joint with the water pipe, and is connected with the water pipe by threads, so that the water pipe is convenient to install and replace in the later period.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A stave for a plasma gasification melting furnace, comprising: the corundum-mullite refractory layer is integrally cast and formed on one side, facing the inside of the furnace, of the cooling wall body (2), a heat exchange layer formed by splicing a plurality of cooling heat exchange plates (3) is arranged on one side, facing the outside of the furnace, of the cooling wall body in a fully-covering mode in a positioning mode, and an external heat insulation layer (6) is arranged on one side, facing the outside of the furnace, of the heat exchange layer in a fully-covering mode in a positioning and covering mode.
2. The stave of the plasma gasification melting furnace of claim 1 wherein: a plurality of positioning concave points (21) are arranged on one side, facing the outside of the furnace, of the cooling wall body (2) at intervals, positioning convex points (31) corresponding to the positioning concave points are arranged on one side, facing the inside of the furnace, of each cooling heat exchange plate (3), and the positioning convex points are clamped in the positioning concave points so that the cooling heat exchange plates are fixedly connected to the cooling wall body.
3. The stave of the plasma gasification melting furnace of claim 1 wherein: and a heat exchange pipeline (32) for flowing heat exchange of a cooling medium is arranged in each cooling heat exchange plate (3).
4. The stave of the plasma gasification melting furnace of claim 3 wherein: two free ends of the heat exchange pipeline (32) extend out of one side surface of the cooling heat exchange plate facing the outside of the furnace, and the extending part of the heat exchange pipeline is in threaded connection with a water pipe (4) penetrating through the external heat insulation layer (6).
5. The stave of the plasma gasification melting furnace of claim 4 wherein: the inner peripheral wall of the extending part of the heat exchange pipeline (32) is provided with an internal thread, the outer peripheral wall of the corresponding water pipe (4) is provided with an external thread, and the water pipe is in threaded connection with the heat exchange pipeline through the internal thread and the external thread.
6. The stave of the plasma gasification melting furnace of claim 4 wherein: the water pipe (4) for water inlet and the water pipe (4) for water outlet are respectively arranged at two opposite sides of the furnace body of the plasma gasification melting furnace.
7. The stave of the plasma gasification melting furnace of claim 1 wherein: the surface of one side, facing the furnace, of the corundum-mullite refractory layer (1) is a smooth surface.
8. The stave of the plasma gasification melting furnace of claim 1 wherein: the cooling wall body (2) is a high-temperature-resistant cast steel pouring forming piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121982771.7U CN216143735U (en) | 2021-08-23 | 2021-08-23 | Cooling wall of plasma gasification melting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121982771.7U CN216143735U (en) | 2021-08-23 | 2021-08-23 | Cooling wall of plasma gasification melting furnace |
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|---|---|
| CN216143735U true CN216143735U (en) | 2022-03-29 |
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| CN202121982771.7U Active CN216143735U (en) | 2021-08-23 | 2021-08-23 | Cooling wall of plasma gasification melting furnace |
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Effective date of registration: 20240116 Address after: No. 1515 Gangfeng Road, Yangzijiang International Chemical Industry Park, Suzhou City, Jiangsu Province, 215600 Patentee after: Jiangsu Meidong Environmental Technology Co.,Ltd. Address before: 215600 No. 1515 Gangfeng Road, Yangtze River International Chemical Industrial Park, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Shixing plasma technology (Jiangsu) Co.,Ltd. |
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