CN217109565U - Oxygen-enriched bubbling type plasma gasification melting furnace - Google Patents
Oxygen-enriched bubbling type plasma gasification melting furnace Download PDFInfo
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- CN217109565U CN217109565U CN202220351053.8U CN202220351053U CN217109565U CN 217109565 U CN217109565 U CN 217109565U CN 202220351053 U CN202220351053 U CN 202220351053U CN 217109565 U CN217109565 U CN 217109565U
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Abstract
The utility model discloses an oxygen-enriched bubbling type plasma gasification melting furnace. The scheme that discloses includes the furnace body, the furnace body is U type furnace body, sets gradually first vertical section furnace, horizontal segment furnace and the vertical section furnace of second along the material trend in the U type furnace body, feed inlet and exhanst gas outlet are established respectively to U type furnace body top both ends, and one or have a plurality of combustor installing ports are established to first vertical section furnace's lateral wall, and first vertical section furnace is equipped with one or more plasma torch installing ports with the corner at horizontal segment furnace junction, is equipped with row cinder notch and a plurality of oxygen-enriched gas spouts on horizontal segment furnace's the wall. The utility model can realize the material piling in the material piling area in the furnace body, the plasma torch and the natural gas burner are both arranged in the material piling area, the energy is concentrated, and the melting of fly ash can be realized more quickly; oxygen enrichment is introduced into the molten pool, so that the molten slag pool can be stirred, and the heat transfer efficiency of molten slag is improved.
Description
Technical Field
The utility model relates to a melting gasification technology, in particular to an oxygen-enriched bubbling type plasma gasification melting furnace.
Background
At present, the melting furnaces widely used in China comprise a surface heating type melting furnace, a high-temperature rotary kiln, an electric arc furnace and a plasma melting furnace, and the existing furnace body has low energy utilization rate and difficult slag discharge.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects or deficiencies of the prior art, the utility model provides an oxygen-enriched bubbling type plasma gasification melting furnace.
Therefore, the provided melting furnace comprises a furnace body, wherein the furnace body is a U-shaped furnace body, a first vertical section hearth, a horizontal section hearth and a second vertical section hearth are sequentially arranged in the U-shaped furnace body along the material direction, and a feed inlet and a flue gas outlet are respectively arranged at two ends of the top of the U-shaped furnace body; the side wall of the first vertical section hearth is provided with one or more burner mounting ports, the corner of the connecting part of the first vertical section hearth and the horizontal section hearth is provided with one or more plasma torch mounting ports, and the wall of the horizontal section hearth is provided with a slag discharge port and a plurality of oxygen-enriched gas nozzles.
In some schemes, the plasma torch mounting port is axially and obliquely arranged relative to the first vertical section hearth.
In some embodiments, the burner mounting port is perpendicular to the furnace wall.
In some aspects, the one or more burner mounting ports are disposed in a lower region of the first vertical segment hearth.
In some schemes, the slag discharging port is arranged on the wall far away from the first vertical section hearth.
In some schemes, a groove is arranged in a local area of the bottom surface of the horizontal section hearth, the groove is close to the slag discharge port and is positioned below the slag discharge port, and a plurality of oxygen-enriched gas nozzles are arranged on the side wall of the groove area.
In some schemes, the groove is positioned below the second vertical section hearth.
In some schemes, a storage bin is arranged at the feeding port.
In some schemes, the height of the first vertical section furnace is larger than that of the second vertical section furnace.
In a further scheme, a burner is installed on the burner installation port, and a plasma torch is installed on the plasma torch installation port.
The utility model has the advantages as follows:
(1) the utility model discloses a furnace sets up the windrow district, realizes the windrow of flying dust, and windrow district combustor and lower part plasma torch provide energy, make the energy concentrate more, change and form the molten bath.
(2) The utility model discloses the molten bath district in the furnace body sets up the oxygen boosting gas spout, produces the oxygen boosting burning in the windrow district, and oxygen boosting burning energy utilization is higher, can mix the molten bath simultaneously, improves the heat transfer efficiency of slag in the molten bath to, the oxidizing atmosphere that the oxygen boosting provided can restrain the separation out of high melting point material in the molten bath like metal, prevents that the slag notch from blockking up.
(3) The utility model discloses an oxygen boosting burning's mode can effectively reduce the flue gas emission, reduces the energy loss of discharging fume.
Drawings
Fig. 1 is a schematic structural view of the oxygen-enriched bubbling type plasma gasification melting furnace of the present invention.
Detailed Description
Unless otherwise indicated, the terms or corresponding treatment processes herein are understood by those of ordinary skill in the relevant art or are implemented using known related processes.
The terms of direction or orientation of the top, bottom, end, side, axial, upper, lower, etc. described herein are consistent with the corresponding direction or orientation in the drawings, and it should be noted that the corresponding direction or orientation in the drawings does not play a sole role in limiting the present invention, and those skilled in the art can make equivalent changes based on the present disclosure within the protection scope of the present invention.
Referring to fig. 1, the furnace body of the oxygen-enriched bubbling plasma melting furnace of the present invention is a U-shaped furnace body structure, and a first vertical section furnace, a horizontal section furnace 5 and a second vertical section furnace are sequentially arranged along the material group direction in the furnace body, the three sections of furnaces are respectively a stockpiling zone, a molten pool zone and a gas phase zone in terms of main functions, the top of the hearth of the stockpiling zone is provided with a feed inlet, and the top of the furnace of the gas phase zone is provided with a flue gas outlet 4, i.e. the two ends of the top of the U-shaped furnace body are respectively a feed inlet and a flue gas outlet; one or more burner mounting ports 2 are arranged on the side wall of the first vertical section hearth; one or more plasma torch installing ports 3 are arranged at the connecting corners of the first vertical section hearth and the horizontal section hearth, and meanwhile, a slag discharging port 7 and a plurality of oxygen-enriched gas nozzles are arranged on the wall of the horizontal section hearth. Such as 6-8 oxygen-enriched gas jets.
The device of the utility model is suitable for solid useless processing, is particularly suitable for waste incineration flying ash processing. The utility model discloses a during the device uses, combustor and plasma torch are installed respectively to combustor installing port and plasma torch installing port, oxygen-enriched gas spray gun is installed to the oxygen-enriched gas spout, in operation, pending material (like the waste incineration fly ash) is through the preliminary treatment, flow into furnace windrow district from the feed inlet after the compatibility, reach certain windrow height after, the melting of windrow district bottom fly ash gets into the melting zone and forms the molten bath, in-process windrow district energy is concentrated, make in the fly ash inorganic matter become the melting state and get into the melting zone district, the oxygen-enriched gas spout department of melting zone continuously blows oxygen-enriched gas (like the oxygen-enriched air simultaneously, wherein oxygen concentration is 30% ~ 70%), provide the oxygen-enriched gas spray gunOxygen-enriched combustion is carried out on the oxygen required by the combustion of the natural gas, the oxygen-enriched combustion effectively reduces the emission of flue gas, the energy loss of the discharged flue gas is reduced, and the sprayed oxygen-enriched gas enables the slag to bubble, so that the materials are stirred to accelerate the heat transfer efficiency; the harmful substances in the fly ash, including dioxin, are sufficiently combusted to generate CO 2 And H 2 The direction of gas such as O is the same as the material flow direction, and CO 2 And H 2 Gas such as O enters a gas phase area, is exhausted from a flue gas outlet 4 after rising (can also enter a subsequent tail gas treatment system), and fully exchanges heat with materials in the rising process of the gas, so that the energy utilization rate is improved; the molten material is discharged from the slag discharge port 7.
The oxygen-enriched combustion type plasma melting furnace of the utility model forms oxygen-enriched combustion in the stockpiling area of the plasma furnace, so that the molten slag is completely melted, and the energy utilization rate is improved by the oxygen-enriched combustion of natural gas; oxygen enrichment is introduced into the side part of the molten pool, so that the molten slag pool can be stirred, and the heat transfer efficiency of molten slag is improved; meanwhile, oxygen enrichment is introduced to form oxidizing atmosphere, so that the precipitation of high-melting-point metal is inhibited, and the slag outlet is effectively prevented from being blocked; and the oxygen-enriched combustion also realizes the great reduction of the smoke quantity, and reduces the disposable input cost of solid waste treatment by the plasma technology and the operation cost of subsequent smoke treatment.
On the basis of the scheme, the melting furnace of the utility model can further adopt the following scheme or replace the scheme with the following scheme.
In some schemes, the plasma torch mounting port at the corner is inclined relative to the axial direction of the first vertical section hearth, such as inclined by 30-45 degrees, so that the material pile at the corner can be sufficiently heated.
In a preferred scheme, the burner mounting port is vertical to the furnace wall and is used for baking the furnace and assisting combustion to provide energy.
In a limited arrangement, the one or more burner ports are located in a lower region of the first vertical hearth section to facilitate a concentrated heating zone in the lower region of the stockpile zone to provide heat energy utilization.
In still other schemes, the slag discharge port is arranged on the side wall far away from the material piling area, so that the material is fully melted and treated.
In other schemes, a groove is arranged on the bottom surface of the horizontal section hearth, the groove is close to and below the slag discharge port, and meanwhile, a plurality of oxygen-enriched gas nozzles are arranged on the side wall of the groove area, so that a molten material can enter the groove area after entering a melting area, a plasma torch continuously provides heat for the material, and oxygen-enriched nozzles on two sides of the groove continuously blow oxygen enrichment to provide oxygen required by natural gas combustion; the molten material is discharged from the slag discharge port 7. In a preferred scheme, the groove is positioned below the second vertical section hearth. In some schemes, the slag discharging port is an overflow slag discharging port, namely the slag discharging port is arranged on the side wall which is away from the bottom surface of the hearth by a certain distance, the slag discharging port is arranged obliquely upwards (namely the inlet of the slag discharging port is lower than the outlet of the slag discharging port), and after the molten pool reaches a certain height, the molten material is discharged from the overflow slag discharging port.
In still other schemes, a storage bin 1 is arranged at the feeding port to effectively control feeding work.
In still other schemes, the height of the first section of vertical hearth is larger than that of the second section of vertical hearth for realizing the process.
The above description and drawings of the present embodiment represent the preferred embodiments of the present invention, and can be adjusted according to the process requirements, the construction site conditions, and the like during the actual operation.
Claims (10)
1. The oxygen-enriched bubbling type plasma gasification melting furnace comprises a furnace body and is characterized in that the furnace body is a U-shaped furnace body, a first vertical section hearth, a horizontal section hearth and a second vertical section hearth are sequentially arranged in the U-shaped furnace body along the material direction, and a feed inlet and a flue gas outlet are respectively arranged at two ends of the top of the U-shaped furnace body; the side wall of the first vertical section hearth is provided with one or more burner mounting ports, the corner of the connecting part of the first vertical section hearth and the horizontal section hearth is provided with one or more plasma torch mounting ports, and the wall of the horizontal section hearth is provided with a slag discharge port and a plurality of oxygen-enriched gas nozzles.
2. The oxygen-rich bubbling plasma gasification melter of claim 1 wherein the plasma torch mounting ports are axially inclined relative to the first vertical hearth section.
3. An oxygen-enriched bubbling plasma gasification melter as recited in claim 1 wherein said burner mounting ports are perpendicular to the furnace wall.
4. An oxygen-rich bubbling plasma gasification melter as recited in claim 1 wherein said one or more burner mounting ports are disposed in a lower region of the first vertical hearth section.
5. The oxygen-rich bubbling plasma gasification melter of claim 1 wherein the slag discharge port is located in a wall of the furnace remote from the first vertical section.
6. The oxygen-enriched bubbling type plasma gasification melting furnace according to claim 1, wherein a groove is formed in a partial region of the bottom surface of the horizontal hearth, the groove is close to and below the slag discharge port, and a plurality of oxygen-enriched gas nozzles are formed in the side wall of the groove.
7. An oxygen-rich bubbling plasma gasification melter as recited in claim 6 wherein said trough is located below the second vertical hearth.
8. The oxygen-rich bubbling plasma gasification melter of claim 1 wherein a silo is provided at the feed inlet.
9. The oxygen-rich bubbling plasma gasification melter of claim 1 wherein the height of the first vertical hearth is greater than the height of the second vertical hearth.
10. The oxygen-rich bubbling plasma gasification melter of claim 1 wherein the burner mounting port has a burner mounted thereto, the plasma torch mounting port has a plasma torch mounted thereto, and the oxygen-rich gas port has an oxygen-rich gas lance mounted thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220351053.8U CN217109565U (en) | 2022-02-21 | 2022-02-21 | Oxygen-enriched bubbling type plasma gasification melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220351053.8U CN217109565U (en) | 2022-02-21 | 2022-02-21 | Oxygen-enriched bubbling type plasma gasification melting furnace |
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| Publication Number | Publication Date |
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| CN217109565U true CN217109565U (en) | 2022-08-02 |
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| CN202220351053.8U Active CN217109565U (en) | 2022-02-21 | 2022-02-21 | Oxygen-enriched bubbling type plasma gasification melting furnace |
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- 2022-02-21 CN CN202220351053.8U patent/CN217109565U/en active Active
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