CN215062112U - Plasma melting furnace device for heating through molten salt - Google Patents
Plasma melting furnace device for heating through molten salt Download PDFInfo
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- CN215062112U CN215062112U CN202120245077.0U CN202120245077U CN215062112U CN 215062112 U CN215062112 U CN 215062112U CN 202120245077 U CN202120245077 U CN 202120245077U CN 215062112 U CN215062112 U CN 215062112U
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- furnace body
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- plasma
- molten salt
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- 150000003839 salts Chemical class 0.000 title claims abstract description 64
- 238000002844 melting Methods 0.000 title claims abstract description 28
- 230000008018 melting Effects 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000011819 refractory material Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 7
- 230000004927 fusion Effects 0.000 claims 6
- 239000000463 material Substances 0.000 abstract description 15
- 238000007599 discharging Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 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 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 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
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a plasma melting furnace device for heating through fused salt, which comprises a furnace body, wherein the furnace body is hermetically connected with a furnace cover, the side wall of the furnace body is provided with a plurality of plasma torch channels inclined downwards from outside to inside, each plasma torch channel is internally connected with a plasma torch a, the side wall of the furnace body is internally provided with a discharge channel inclined downwards from outside to inside, the inner wall of the furnace body and the inner wall of the discharge channel are hermetically connected with a heat conduction layer, the furnace body and the inner wall of the discharge channel form a sealed cavity, a fused salt layer is filled in the sealed cavity, the inner wall of the furnace body is positioned in the sealed cavity and is also connected with an electrode, and the side wall above the furnace body is provided with a feeding channel; through set up high temperature molten salt layer in the plasma stove, through heating the fused salt, to plasma melting stove bottom, the stove side heats, realizes thermal high-efficient utilization to make furnace material even melt, improve the mobility of melting material, realize automatic feeding ejection of compact operation.
Description
Technical Field
The utility model belongs to the technical field of plasma melting furnace equipment, concretely relates to plasma melting furnace device that heats through fused salt.
Background
The plasma melting furnace is used in the field of hazardous waste disposal, and has the advantages of wide application range, reduction, harmlessness and the like. The principle is that a plasma torch is used as a heat source, and reactants are melted to form a non-toxic and harmless glass body.
The existing plasma furnace usually adopts top-inserted and side-inserted plasma torches, and the liquid level of a molten metal molten pool in the furnace is lower than the position of the plasma torches. The main disadvantages are: (1) only the liquid level of the molten pool can receive the heat conduction and the heat radiation of the plasma torch, but the heat absorption below the molten pool is insufficient, and the material below the liquid level of the molten pool is difficult to melt only by the heat conduction of the molten slurry, so that the heat distribution in the plasma furnace is extremely uneven. (2) The discharge gate of conventional plasma stove all establishes in the furnace bottom, leans on the mobility of molten slurry self to flow out furnace during the ejection of compact, because the difference in temperature is big about the molten slurry, therefore bottom molten slurry melting effect is poor, easily solidifies to can not normally arrange the material. (3) The operation system of the existing plasma melting furnace is batch feeding and batch discharging, an opening is needed for discharging every time, a port needs to be blocked after discharging, and then the next batch of materials can be melted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a plasma melting furnace device that heats through the fused salt has overcome traditional plasma furnace bottom temperature and furnace upper portion temperature and has differed greatly, leads to the extremely inhomogeneous problem of stove internal temperature distribution.
The utility model discloses a technical scheme be, a plasma melting furnace device that heats through fused salt, including the furnace body, furnace body sealing connection bell, furnace body lateral wall sets up the decurrent plasma torch passageway of a plurality of outside-in slopes, connects plasma torch an in every plasma torch passageway, and the decurrent discharge passageway of slope is seted up to the lateral wall outside-in of furnace body, the equal sealing connection heat-conducting layer of furnace body inner wall and discharge passageway inner wall, heat-conducting layer and furnace body, discharge passageway inner wall form seal chamber, and the fused salt layer is filled in the seal chamber, and the furnace body inner wall is located seal chamber and still connects the electrode, and feedstock channel is seted up to the furnace body top lateral wall.
The utility model discloses a characteristics still lie in:
the furnace body is characterized by further comprising a plurality of thermocouples, and each thermocouple penetrates through the outer wall of the furnace body and extends into the molten salt layer.
The heat-conducting layer of furnace body inner wall connection is not higher than plasma torch passageway bottom, and discharge channel's entry end is located the furnace body bottom, and discharge channel's exit end is not higher than the feed channel least significant end, and discharge channel is located the port department of furnace body outer wall and forms the fused salt charge door with the heat-conducting layer.
The outlet end of the outer wall of the furnace body, which is positioned at the discharge channel, is connected with a hearth overflow slag discharge pipe, a T-shaped channel is arranged in the hearth overflow slag discharge pipe, one port of the T-shaped channel is communicated with the outlet end of the discharge channel, and a plasma torch b is connected in the port opposite to the port.
The furnace body includes the cylindricality shell body that comprises the steel sheet, connects gradually thermal-insulation fiber layer, high temperature heat preservation, high temperature flame retardant coating in the cylindricality shell body, and cylindricality shell body outer wall connects cold water pipeline a.
The furnace cover comprises a fireproof layer with a cover-shaped structure, the side wall of the fireproof layer is sequentially connected with a furnace shell made of heat-preservation cotton and a heat-resistant steel plate, a flue is formed in the height direction of the fireproof layer, and the outer wall of the furnace shell is connected with a cold water pipeline b.
The supporting seat of refractory material preparation is connected to the furnace body bottom, and the supporting seat supports and connects the heat-conducting layer.
Each plasma torch channel deviates 4-10 degrees from the corresponding radial direction of the outer port of the plasma torch channel.
The bottom of the furnace body is provided with a fused salt deslagging channel which is communicated with the sealed cavity.
The furnace body is characterized by further comprising a continuous slag discharging pipe, wherein the continuous slag discharging pipe penetrates through the side wall of the bottom end of the furnace body, the sealed cavity and the heat conducting layer.
The utility model has the advantages that:
the utility model relates to a plasma melting furnace device that heats through fused salt through set up high temperature fused salt layer in plasma stove, through heating the fused salt, to plasma melting furnace stove bottom, the stove side heats, realizes thermal high-efficient utilization, makes the furnace material evenly melt, improves the mobility of melting material, realizes automatic feeding ejection of compact operation.
Drawings
FIG. 1 is a cross-sectional view of a plasma furnace apparatus for heating by molten salt in accordance with the present invention;
FIG. 2 is a cross-sectional view of another angle of a plasma melter apparatus of the present invention heated by molten salt;
FIG. 3 is a sectional view taken along line D-D of FIG. 1;
FIG. 4 is a sectional view taken along line C-C of FIG. 2;
fig. 5 is a sectional view taken along the direction E-E in fig. 1.
In the figure, 1, a furnace body, 2, a furnace cover, 3, a plasma torch channel, 4, a plasma torch a, 5, a discharge channel, 6, a hearth overflow slag discharge pipe, 7, a plasma torch b, 8, a supporting seat, 9, a heat conduction layer, 10, a molten salt layer, 11, an electrode, 12, a flue, 13, a feed channel, 14, a cold water pipeline b, 15, a cold water pipeline a, 16, a continuous slag discharge pipe, 17, a molten salt slag discharge channel and 18 are thermocouples.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a plasma melting furnace device that heats through fused salt, as shown in fig. 1 and fig. 2, including furnace body 1, furnace body 1 sealing connection bell 2, a plurality of outside-in slopes decurrent plasma torch passageway 3 are seted up to 1 lateral wall of furnace body, connect plasma torch a4 in every plasma torch passageway 3, the decurrent discharge passage 5 of slope is seted up to the lateral wall outside-in of furnace body 1, the equal sealing connection heat-conducting layer 9 of 1 inner wall of furnace body and discharge passage 5 inner wall, heat-conducting layer 9 and furnace body 1, discharge passage 5 inner walls form seal chamber, the packing fused salt layer 10 in the seal chamber, 1 inner wall of furnace body is located seal chamber and still connects electrode 11, feedstock channel 13 is seted up to 1 top lateral wall of furnace body.
The furnace body 1 is characterized by further comprising a plurality of thermocouples 18, wherein each thermocouple 18 penetrates through the outer wall of the furnace body 1 and extends into the molten salt layer 10 to monitor the temperature of the molten salt layer.
The heat-conducting layer 9 of furnace body 1 wall connection is not higher than 3 bottoms of plasma torch passageway, and the entry end of discharge passageway 5 is located furnace body 1 bottom, and the exit end of discharge passageway 5 is not higher than 13 lowest ends of feedstock channel, and is not less than 3 bottoms of plasma torch passageway, and the port department that discharge passageway 5 is located the outer wall of furnace body 1 forms the fused salt charge door with heat-conducting layer 9.
As shown in fig. 3, the outlet end of the outer wall of the furnace body 1, which is located at the discharge channel 5, is connected to the hearth overflow slag discharge pipe 6, a T-shaped channel is formed in the hearth overflow slag discharge pipe 6, one port of the T-shaped channel is communicated with the outlet end of the discharge channel 5, and a plasma torch b7 is connected in the port opposite to the port.
The furnace body 1 comprises a cylindrical outer shell body formed by steel plates, a heat-insulating fiber layer, a high-temperature heat-insulating layer and a high-temperature fire-resistant layer are sequentially connected in the cylindrical outer shell body, and the outer wall of the cylindrical outer shell body is connected with a cold water pipeline a 15.
The furnace cover 2 comprises a fireproof layer with a cover-shaped structure, the side wall of the fireproof layer is sequentially connected with a furnace shell made of heat-preservation cotton and a heat-resistant steel plate, a flue 12 is formed in the fireproof layer along the height direction, and the outer wall of the furnace shell is connected with a cold water pipeline b 14.
The supporting seat 8 that refractory material prepared is connected to furnace body 1 bottom, and supporting seat 8 supports and connects heat-conducting layer 9.
As shown in fig. 4, each torch passageway 3 is offset from its outer end by 4-10 ° in the respective radial direction.
The bottom of the furnace body 1 is provided with a fused salt deslagging channel 17, and the fused salt deslagging channel 17 is communicated with the sealed cavity.
As shown in fig. 5, the furnace also comprises a continuous slag discharge pipe 16, and the continuous slag discharge pipe 16 penetrates through the side wall at the bottom end of the furnace body 1, the sealed cavity and the heat conduction layer 9.
The utility model relates to a plasma melting furnace device that heats through fused salt in each part the effect as follows:
The plasma torch channels 3 are used for being connected with the plasma torches a4, the plasma torches a4 are communicated with the inner cavity of the furnace body 1 and used for supplying heat to the inner cavity, each plasma torch channel 3 deviates from the corresponding radius direction of the outer end port of the plasma torch channel by 4-10 degrees, circulation of gas in the furnace is facilitated, smoke can be homogenized, and temperature distribution in the furnace is optimized.
The discharge channel 5 enables the user to discharge the liquefied material, and since the outlet end of the discharge channel 5 is not higher than the lowest end of the feed channel 13 and not lower than the bottom of the plasma torch channel 3, controlling the solid feed through the feed channel 13 enables the discharge channel 5 to discharge the liquid material.
The plasma torch b7 is connected to the inside of the hearth overflow slag discharge pipe 6, the discharge channel 5 can be heated, and the slag discharge channel can be heated, so that the slag in the overflow process is not cooled, the slag is prevented from being bonded with a blocking opening, and the automatic continuous slag discharge is realized.
The supporting seat 8 is made of high-temperature refractory materials, can support the bottom of the heat conduction layer 9, prevents the heat conduction layer 9 from being attached to the bottom of the furnace body 1, and is not beneficial to molten salt heating.
The heat conducting layer 9 is made of high heat conducting refractory materials, such as one or more of silicon carbon bricks and carbon bricks, and can rapidly transmit heat of molten salt to a slag melting area.
The molten salt layer 10 is one or a mixture of barium chloride and sodium tetraborate, and can be melted into a liquid state when being heated by the electrode, and the heating temperature can reach 1350 ℃. The heat of the molten salt layer 10 is melted through the heat conduction layer to supplement heat to the bottom of the molten pool, the four sides of the molten pool and the discharge port, and when the amount of the molten salt is insufficient, the molten salt is supplemented through the molten salt feed inlet. Because the molten salt charging opening is positioned at a high position, the charging operation is very simple and convenient. And a fused salt deslagging channel 17 is arranged, so that the fused salt can be emptied.
The electrode 11 is a water-cooled electrode, the heating temperature of the electrode is 1350 ℃, the melting point of the molten salt layer is lower than 1000 ℃, and the heating temperature is higher than the melting point, so that the molten salt is melted to form a liquid state.
The flue 12 can discharge the flue gas generated in the furnace body 1, and prevent the pressure intensity of heat heated in the furnace body 1 from being too large.
The feeding channel 13 is arranged on the side wall of the upper part of the furnace body 1, so that solid materials can be conveniently put in.
The cold water pipeline b14 and the cold water pipeline a15 are used for cooling the outer wall of the furnace body 1 and the outer wall of the cover body 2.
The continuous slag discharge pipe 16 belongs to a discharge port for fault equipment, is positioned at the bottom of the furnace body 1, can realize the discharge operation of the whole furnace materials, and can realize the rapid discharge of the materials in the furnace.
The thermocouple 18 is used to measure the temperature of the molten salt layer 10.
The utility model relates to a use method of a plasma melting furnace device for heating through fused salt, which comprises the following steps:
when the furnace is used, materials are put into a cavity formed by the heat conducting layer 9 through the feeding channel 13, the temperature of a hearth reaches 1400-1600 ℃ under the action of the high-temperature plasma torch a4, the upper materials are quickly melted at the temperature to form liquid slag, smoke is discharged from the high-temperature flue 12 at the top of the furnace, then the smoke is heated through the electrodes 11 to melt the molten salt layer 10 into liquid, the solid materials in the cavity are heated and melted into liquid through the inner side wall and the bottom of the furnace body 1 and the heat conducting layer 9 in the discharging channel 5, the solid materials are increased to a position higher than the discharging channel 5 along with the put materials, and the liquid materials are discharged through the discharging channel 5 according to the principle of a communicating vessel; because the inclined arrangement mode of the outlet end of the discharge channel 5 leads to the easy solidification of the material at the port part, the plasma torch b7 inside the hearth overflow slag discharge pipe 6 heats the outlet end of the discharge channel 5, the phenomenon of solidification of the material at the outlet end of the discharge channel 5 is avoided, and automatic slag discharge is realized.
When fused salt content is not enough, mend the fused salt through the fused salt charge door, when needs blowing out the stove operation, can carry out the operation of unloading to the fused salt through fused salt slag discharge passage 17.
In this way, the utility model relates to a plasma melting furnace device that heats through fused salt can improve the uneven problem of plasma furnace temperature gradient greatly. More rarely, the melting furnace can realize continuous feeding and continuous discharging, greatly improves the automation level of the plasma furnace, and improves the operation environment of workers in front of the furnace.
Claims (10)
1. A plasma melting furnace device for heating through molten salt is characterized by comprising a furnace body (1), the furnace body (1) is hermetically connected with the furnace cover (2), a plurality of plasma torch channels (3) which are inclined downwards from outside to inside are formed in the side wall of the furnace body (1), a plasma torch a (4) is connected in each plasma torch channel (3), the side wall of the furnace body (1) is provided with a discharge channel (5) inclining downwards from outside to inside, the inner wall of the furnace body (1) and the inner wall of the discharge channel (5) are hermetically connected with a heat conduction layer (9), the heat conducting layer (9), the furnace body (1) and the inner wall of the discharge channel (5) form a sealed cavity, a molten salt layer (10) is filled in the sealed cavity, the inner wall of the furnace body (1) is positioned in the sealed cavity and is also connected with an electrode (11), and a feeding channel (13) is arranged on the side wall above the furnace body (1).
2. A plasma melting furnace installation for heating by molten salt according to claim 1, characterised by further comprising a plurality of thermocouples (18), each thermocouple (18) extending through the outer wall of the furnace body (1) into the molten salt layer (10).
3. A plasma fusion furnace installation heated by molten salt according to claim 1, characterized in that the heat conducting layer (9) of the furnace body (1) inner wall connection is not higher than the plasma torch channel (3) bottom, the inlet end of the discharge channel (5) is located at the furnace body (1) inner bottom, the outlet end of the discharge channel (5) is not higher than the feed channel (13) lowest end, the discharge channel (5) is located at the port of the furnace body (1) outer wall to form a molten salt feed opening with the heat conducting layer (9).
4. A plasma melting furnace device heated by molten salt according to claim 1, characterized in that the outlet end of the outer wall of the furnace body (1) at the discharge passage (5) is connected with a hearth overflow slag discharge pipe (6), a T-shaped passage is arranged in the hearth overflow slag discharge pipe (6), one port of the T-shaped passage is communicated with the outlet end of the discharge passage (5), and a plasma torch b (7) is connected in the port opposite to the port.
5. A plasma fusion furnace installation heated by molten salt according to claim 1, characterized in that the furnace body (1) comprises a cylindrical outer shell made of steel plate, and a heat-insulating fiber layer, a high-temperature heat-insulating layer and a high-temperature fire-resistant layer are connected in sequence in the cylindrical outer shell, and the outer wall of the cylindrical outer shell is connected with a cold water pipeline a (15).
6. A plasma fusion furnace installation heated by molten salt according to claim 1, characterised in that the furnace cover (2) comprises a refractory layer of cover-like structure, the side wall of the refractory layer is connected with a furnace shell made of heat-insulating cotton and heat-resistant steel plate in sequence, the refractory layer is provided with a flue (12) along the height direction, and the outer wall of the furnace shell is connected with a cold water pipeline b (14).
7. A plasma fusion furnace installation heated by molten salts according to claim 1, characterized in that the bottom of the furnace body (1) is connected with a support base (8) made of refractory material, the support base (8) being supported and connected with a heat conducting layer (9).
8. A plasma fusion furnace installation heated by molten salts according to claim 1, characterised in that each plasma torch channel (3) is offset from its outer port by 4-10 ° in the respective radial direction.
9. A plasma melting furnace device heated by molten salt according to claim 1, characterized in that the bottom of the furnace body (1) is opened with a molten salt slag discharge channel (17), and the molten salt slag discharge channel (17) is communicated with the sealed cavity.
10. A plasma fusion furnace installation heated by molten salt according to claim 1, further comprising a continuous slag discharge pipe (16), the continuous slag discharge pipe (16) passing through the bottom end side wall of the furnace body (1), the sealed cavity, the heat conducting layer (9).
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CN202120245077.0U CN215062112U (en) | 2021-01-28 | 2021-01-28 | Plasma melting furnace device for heating through molten salt |
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CN202120245077.0U CN215062112U (en) | 2021-01-28 | 2021-01-28 | Plasma melting furnace device for heating through molten salt |
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