CN219674228U - Solid waste gas melting furnace - Google Patents
Solid waste gas melting furnace Download PDFInfo
- Publication number
- CN219674228U CN219674228U CN202320117160.9U CN202320117160U CN219674228U CN 219674228 U CN219674228 U CN 219674228U CN 202320117160 U CN202320117160 U CN 202320117160U CN 219674228 U CN219674228 U CN 219674228U
- Authority
- CN
- China
- Prior art keywords
- furnace body
- slag
- zone
- solid waste
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007789 gas Substances 0.000 title claims abstract description 39
- 238000002844 melting Methods 0.000 title claims abstract description 23
- 230000008018 melting Effects 0.000 title claims abstract description 23
- 239000002910 solid waste Substances 0.000 title claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 56
- 238000002309 gasification Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000012071 phase Substances 0.000 claims abstract description 12
- 239000007790 solid phase Substances 0.000 claims abstract description 8
- 239000011449 brick Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 8
- 239000010881 fly ash Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a melting furnace for solid waste gas, which comprises a main furnace body, wherein a material inlet and a gas port are formed in the axial top of the main furnace body, a gasification section furnace body is connected to the gas port, the gasification section furnace body is communicated with the main furnace body through the gas port, and the gasification section furnace body is axially positioned above the main furnace body; the main furnace body is internally provided with a gas phase zone, a solid phase zone and a slag zone from the axial top to the bottom in sequence; the slag zone is provided with a plurality of spray guns. The utility model heats the bottom of the molten pool by using the spray gun, and has the advantages of wide adaptability to materials, high heating efficiency and the like. The heat convection of the molten pool caused by the spray gun heating mode is strong, the temperature difference of the molten pool along the height direction is small, and the bottom slag and metal discharge is facilitated.
Description
Technical Field
The utility model belongs to the technical field of solid dangerous waste treatment, and relates to a solid waste gasification melting furnace with a bottom auxiliary heating spray gun for treating rotary kiln slag and fly ash.
Background
A resource treatment method of slag and fly ash generated by a rotary kiln system is that the slag and fly ash are melted at high temperature (the temperature is more than 1400 ℃) after compatibility, stable silicate complex forms can be formed after quenching (such as water quenching), heavy metals in the slag and fly ash are solidified, dioxin in the slag and fly ash is decomposed at high temperature, the content of molten slag glass, acid dissolution rate and heavy metal leaching toxicity completely meet the technical requirements of solid waste vitrification treatment products, and the slag and fly ash can be used as building materials and the like for resource utilization.
However, in the melting process, since the high-temperature heat source for melting is a plasma torch generator or the like, heat is mainly concentrated on the surface of the material, and the high-temperature flame generated by the plasma torch generator or the like heats the material and the refractory material to diffuse the heat downward, a temperature gradient is formed in the slag liquid phase region from top to bottom, and the upper temperature is high and the lower temperature is low. In the design process, a contact or non-contact auxiliary heating means is often added at the bottom of the molten pool. Contact heating means such as molybdenum electrodes, non-contact heating means such as silicon carbide rods, silicon molybdenum rods, induction coils, etc. The molybdenum electrode has high use cost, is easy to oxidize during heating, and is extremely easy to carry out substitution reaction with Fe, zn, cu, pb and other metal oxides in the materials, so that the molybdenum electrode is damaged. Non-contact heating has a problem of low heat utilization rate.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the utility model provides a melting furnace for melting solid waste gas.
The utility model provides a solid waste gasification melting furnace which comprises a main furnace body, wherein a material inlet and a gas port are formed in the axial top of the main furnace body, a gasification section furnace body is connected to the gas port, the gasification section furnace body is communicated with the main furnace body through the gas port, and the gasification section furnace body is axially positioned above the main furnace body; the gasification section furnace body and the main furnace body are of independent structures or integrated structures;
a gas outlet and a combustion air inlet are formed in the wall of the gasification section furnace body, and the gas outlet is axially positioned above the combustion air inlet;
the main furnace body is internally provided with a gas phase zone, a solid phase zone and a slag zone from the axial top to the bottom in sequence;
the side wall of the gas phase zone is provided with a heat source generator mounting port, and the heat source generator is a plasma torch generator, an oxygen-enriched combustor or a pure oxygen combustor; the side wall of the slag zone is provided with a plurality of spray guns taking natural gas or diesel oil as fuel; and a slag discharge port is arranged on the side wall of the slag zone.
Preferably, spray guns are arranged on the side walls of the slag zone in the opposite directions.
Optionally, the spray gun is installed in the side wall of the furnace body through a heat-resistant brick.
In some schemes, the inner axial direction of the main furnace body is sequentially provided with a gas phase zone, a solid phase zone, a slag zone and a metal zone from top to bottom; and a metal discharge port is arranged on the side wall of the metal region.
Optionally, the bottom surface is the inclined plane in the main furnace body, the slag discharge port is located the horizontal high position end on bottom inclined plane, the metal discharge port is located the horizontal low position end on inclined plane.
Optionally, the slope from the slag discharge to the metal discharge is 2-5 °.
Preferably, the slag discharge opening is located as spatially as possible from the material inlet.
Preferably, the main furnace body is cuboid, the top surface and the bottom surface of the main furnace body are the surfaces of the long sides of the cuboid respectively, the material inlet is positioned on the top surface and is close to one end in the length direction, and the gas port is close to the other end; the slag discharge port is positioned at one end of the bottom surface in the length direction and is far away from the material inlet.
Preferably, the gasification section furnace body is a vertical furnace body, and the axial direction of the vertical furnace body is perpendicular to the direction of the long side of the main furnace body.
Optionally, a thermocouple is arranged in the furnace wall of the gasification section furnace body.
The utility model heats the bottom of the molten pool by using the spray gun, and has the advantages of wide adaptability to materials, high heating efficiency and the like. The heat convection of the molten pool caused by the spray gun heating mode is strong, the temperature difference of the molten pool along the height direction is small, and the bottom slag and metal discharge is facilitated.
Drawings
FIG. 1 is a schematic view of a solid waste gasification melting furnace according to the present utility model.
Fig. 2 is a view in the A-A direction of fig. 1.
Fig. 3 is a B-B view of fig. 1.
Detailed Description
Unless specifically stated otherwise, scientific and technical terms and methods or processes herein are to be understood by one of ordinary skill in the relevant art or to be implemented using existing related processes or methods.
The terms of axial direction, upward direction, downward direction and the like are consistent with the corresponding directions or orientations in the drawings of the specification, and it should be noted that the directions or orientations shown in the drawings of the specification are examples of the present utility model, and those skilled in the art may make equivalent rotations, exchanges and the like based on the disclosure herein.
The structure of the solid waste gasification melting furnace is shown in fig. 1, and comprises a main furnace body at the bottom and a gasification section furnace body 1 axially positioned above the main furnace body, wherein a material inlet 5 and a gas through hole are formed in the top of the main furnace body, the gasification section furnace body is arranged or connected at the gas through hole, and the gasification section furnace body is communicated with the main furnace body through the gas through hole; a gas outlet 3 and a combustion air inlet 4 are arranged on the wall of the gasification section furnace body;
the inner axial top to the bottom of the main furnace body is sequentially provided with a gas phase zone B, a solid phase zone C and a slag zone D, wherein the side wall of the gas phase zone is provided with a heat source generator mounting opening 7 for mounting a heat source generator 6, and in a specific scheme, the heat source generator 6 can be a plasma torch generator, an oxygen-enriched burner or a pure oxygen burner;
a plurality of spray guns 10 using natural gas or diesel oil as fuel are arranged in the side wall of the slag zone of the furnace body, and slag discharge ports 9 are arranged in the side wall of the slag zone. In the concrete scheme, the furnace wall of the furnace body adopts a refractory structure 2.
The materials to be melted and treated enter the furnace through the material inlet 5, fall into the solid phase zone C through the gas phase zone B, and carry out pyrolysis gasification on organic matters in the materials under the action of high-temperature gas generated by the heat source generator in the main furnace to generate the materials containing CO and H 2 The synthesis gas with equal components enters the gasification section furnace body through the gas port and is discharged through the gas outlet 3; inorganic components in the material (e.g. CaO, siO) 2 、Al 2 O 3 、Fe 2 O 3 CuO, znO, etc.) rapidly melts at the interface of the solid material zone C and the slag zone D under the dual heating action of the gas-phase zone heat source generator and the slag zone D lance 13; the slag is discharged through a liquid slag discharge port 9 at the bottom of the slag layer, and compact vitrified slag is formed after water quenching, so that the resource utilization can be realized; in the operation process, the heat required by melting is mainly a heat source generator, a slag zone D spray gun is auxiliary, and the temperature difference of a C, D, E zone of the whole molten pool section along the height direction is controlled within a certain range, such as within 100 ℃, so as to ensure the discharge of metal in a metal layer;
during operation, oxidant such as air is provided for gasification and incineration of organic matter through the combustion air inlet 4.
Preferably, as shown in FIG. 2, lances 10 are provided on opposite side walls of the slag zone so that the lances on opposite side walls of the furnace are opposed to form convection currents in the furnace so that the convection heat transfer of the bath by the lance heating is intense. In particular embodiments, the lance may be secured within the furnace wall by refractory bricks 11, i.e. refractory bricks are secured within the furnace wall, and the lance is secured within refractory bricks. For example, the refractory brick can be made of low-porosity heavy refractory brick, and the shape of the refractory brick can be square or cylindrical.
For some of the treated matters to be melted, the slag is in a weak reducing atmosphere, and Fe in the inorganic matters is contained in the slag 2 O 3 、CuO, znO and other metal oxides can be partially reduced into metal simple substances, and under the action of density difference, a melting zone can be layered into slag and metal, correspondingly, on the basis of the scheme, in a further scheme, a gas phase zone, a solid phase zone, a slag zone and a metal zone E are sequentially arranged from top to bottom in the axial direction of a main furnace body; the side wall of the metal area is provided with a metal discharge opening 8. In the melting treatment process, slag is discharged through a liquid slag discharge port 9 at the bottom of the slag layer; the metal simple substance is discharged through a metal discharge port 8 at the bottom of the metal layer and sent to a steel plant for recovery treatment. In order to ensure smooth material discharge, in the preferred scheme, the inner bottom surface of the main furnace body is an inclined surface, the slag discharge port is positioned at the horizontal high-position end of the inclined surface at the bottom, and the metal discharge port is positioned at the horizontal low-position end of the inclined surface. For example, the gradient of the bottom surface of the furnace from the slag discharge port to the metal discharge port is 2 to 5 degrees.
In a further preferred embodiment, the slag discharge opening 9 in the furnace body is as far away from the material inlet 5 as possible to increase the residence time of the material in the furnace so that the organic matter in the slag is thoroughly decomposed. The main furnace body is cuboid, the top surface and the bottom surface of the main furnace body are the surfaces of the long sides of the cuboid respectively, the material inlet is positioned on the top surface and is close to one end in the length direction, and the gas through hole is close to the other end; the slag discharge port is positioned at one end of the bottom surface in the length direction and is far away from the material inlet. In a further preferred scheme, the gasification section furnace body is a vertical furnace body, and the axial direction of the vertical furnace body is perpendicular to the direction of the long side of the main furnace body.
In some preferred schemes, in order to avoid large fluctuation of the temperature in the gasification section furnace body, a thermocouple is arranged in the furnace wall of the gasification section furnace body, and the setting position of the thermocouple can be optimally selected, for example, a middle thermocouple 12 can be arranged in the middle of the gasification section furnace body, an outlet thermocouple 13 is arranged at the outlet of the gasification section furnace body, and the gasification section is operated at the process design temperature by monitoring the temperature of the gasification section.
Claims (10)
1. The solid waste gasification melting furnace is characterized by comprising a main furnace body, wherein a material inlet and a gas port are formed in the axial top of the main furnace body, a gasification section furnace body is connected to the gas port, the gasification section furnace body is communicated with the main furnace body through the gas port, and the gasification section furnace body is axially positioned above the main furnace body; the gasification section furnace body and the main furnace body are of independent structures or integrated structures;
a gas outlet and a combustion air inlet are formed in the wall of the gasification section furnace body, and the gas outlet is axially positioned above the combustion air inlet;
the main furnace body is internally provided with a gas phase zone, a solid phase zone and a slag zone from the axial top to the bottom in sequence;
the side wall of the gas phase zone is provided with a heat source generator mounting port, and the heat source generator is a plasma torch generator, an oxygen-enriched combustor or a pure oxygen combustor; the side wall of the slag zone is provided with a plurality of spray guns taking natural gas or diesel oil as fuel; and a slag discharge port is arranged on the side wall of the slag zone.
2. The solid waste gasification melting furnace as set forth in claim 1 wherein spray guns are provided on opposite side walls of said slag zone.
3. The solid waste gasification melting furnace as set forth in claim 1 wherein the lance is mounted in the furnace body side wall by a refractory brick.
4. The solid waste gasification melting furnace according to claim 1, wherein the main furnace body is sequentially provided with a gas phase zone, a solid phase zone, a slag zone and a metal zone from top to bottom in the axial direction; and a metal discharge port is arranged on the side wall of the metal region.
5. The solid waste gasification melting furnace as set forth in claim 4 wherein the bottom surface of the main furnace body is an inclined surface, the slag discharge opening is located at a horizontally high end of the inclined surface of the bottom portion, and the metal discharge opening is located at a horizontally low end of the inclined surface.
6. The solid waste gasification melting furnace as set forth in claim 5 wherein the slope from the slag discharge to the metal discharge is 2 to 5 °.
7. The solid waste melting furnace of claim 1 wherein said slag tap placement is as spatially remote as possible from said material inlet.
8. The solid waste gasification melting furnace according to claim 1, wherein the main furnace body is a cuboid, the top surface and the bottom surface of the main furnace body are the surfaces of long sides of the cuboid respectively, the material inlet is positioned on the top surface and is close to one end in the length direction, and the gas port is close to the other end; the slag discharge port is positioned at one end of the bottom surface in the length direction and is far away from the material inlet.
9. The solid waste gasification melting furnace as set forth in claim 8 wherein the gasification stage furnace is a vertical furnace and the axial direction of the vertical furnace is perpendicular to the direction of the long side of the main furnace.
10. The solid waste gasification melting furnace as set forth in claim 1 wherein a thermocouple is provided in the furnace wall of the gasification stage furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117160.9U CN219674228U (en) | 2023-01-12 | 2023-01-12 | Solid waste gas melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117160.9U CN219674228U (en) | 2023-01-12 | 2023-01-12 | Solid waste gas melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219674228U true CN219674228U (en) | 2023-09-12 |
Family
ID=87893511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320117160.9U Active CN219674228U (en) | 2023-01-12 | 2023-01-12 | Solid waste gas melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219674228U (en) |
-
2023
- 2023-01-12 CN CN202320117160.9U patent/CN219674228U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107363072B (en) | Molten bath smelting method for waste | |
| US11680004B2 (en) | Submerged combustion melters and methods | |
| DK3027566T3 (en) | Melting furnace with a submerged combustion burner, method of using the burner and using the burner | |
| CN113551236B (en) | Plasma melting furnace and method of using the same | |
| CN101880774A (en) | Process for removing copper slag and producing crude lead and lead copper matte by adopting melting treatment in bottom-blowing melting bath and device thereof | |
| RU2699114C2 (en) | Melting apparatus of submersible combustion | |
| CN112080645A (en) | Method and device for recovering zinc oxide and iron from zinc-containing soot | |
| CN114963191A (en) | Hazardous waste incineration and melting integrated disposal method | |
| JPH07310917A (en) | Method and equipment for melting combustion residue of solid from waste combustion apparatus | |
| JP3051135B2 (en) | Material melting method and apparatus for performing the method | |
| CN102012160A (en) | Smelting furnace | |
| CN219674228U (en) | Solid waste gas melting furnace | |
| NO301409B1 (en) | Device and method for converting hazardous waste into harmless aggregate | |
| CN102121788A (en) | Smelting furnace | |
| CN102121789A (en) | Smelting furnace | |
| CN112496009A (en) | Waste incineration fly ash treatment device and method | |
| CN217464441U (en) | Hazardous waste burns melting integration processing system | |
| CN116085801A (en) | Solid waste gas melting furnace | |
| CN213856278U (en) | Waste incineration fly ash treatment device | |
| CN102331169A (en) | Smelting furnace | |
| CN202182611U (en) | Smelting furnace | |
| Pioro et al. | Advanced melting technologies with submerged combustion | |
| CN217763456U (en) | Useless stove of handling of danger | |
| CN211839522U (en) | Paint slag treatment equipment | |
| CN220648261U (en) | Plasma gasification melting furnace with arched grate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |