CN210464079U - Natural gas air nozzle oxygen-enriched side-blown furnace - Google Patents
Natural gas air nozzle oxygen-enriched side-blown furnace Download PDFInfo
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- CN210464079U CN210464079U CN201921158309.8U CN201921158309U CN210464079U CN 210464079 U CN210464079 U CN 210464079U CN 201921158309 U CN201921158309 U CN 201921158309U CN 210464079 U CN210464079 U CN 210464079U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a natural gas air nozzle oxygen enrichment side-blown converter. The side-blown converter comprises a furnace base, a furnace hearth and a furnace top from bottom to top in sequence; the furnace hearth and the furnace top are both provided with water jackets, the upper part of the furnace hearth is provided with a chute communicated with the furnace chamber, and the lower part of the furnace hearth is provided with a siphon inlet and a slag tap; the upper part of the furnace cylinder is provided with a plurality of air nozzles communicated with the furnace chamber, the lower part of the furnace cylinder is provided with a plurality of oxygen-enriched air nozzles and natural gas nozzles communicated with the furnace chamber, and the oxygen-enriched air nozzles and the natural gas nozzles are alternately arranged at intervals. The utility model discloses a side blown converter has saved the compounding step of conventional buggy and follow-up flue gas desulfurization's technology, reduction equipment cost.
Description
Technical Field
The utility model relates to a natural gas air nozzle oxygen enrichment side-blown converter belongs to the side-blown converter field.
Background
The conventional oxygen-enriched side-blown converter usually adopts anthracite as fuel to provide heat energy for the smelting process, and when materials enter the converter, the materials and the anthracite need to be mixed in advance and added into the converter together for high-temperature smelting. Anthracite coal is cheap and can provide enough heat energy for the smelting process, but at the same time, because the coal dosage is too large and the coal contains about 1 percent of S, the anthracite coal often has a large S, SO content in the smelting process2The content of sulfur in the flue gas exceeds the standard, the flue gas does not accord with the national flue gas emission standard, the flue gas needs to be subjected to subsequent desulfurization treatment, the production cost is increased, and the aim of clean production is fulfilled.
The specific implementation method comprises the following steps: the oxygen-enriched gas is introduced into the traditional oxygen-enriched side-blown furnace through the upper air nozzle and the lower air nozzle, the materials and the anthracite are mixed after the furnace is opened, the materials enter from the material port, the problem of sulfur superscript exists in the flue gas, the material mixing step and the subsequent flue gas desulfurization step are needed, and the equipment cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a natural gas tuyere oxygen boosting side-blown converter, this side-blown converter can save buggy compounding step and follow-up flue gas desulfurization's technology, reduction equipment cost.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
a natural gas air nozzle oxygen-enriched side-blown furnace comprises a furnace base, a furnace hearth and a furnace top from bottom to top in sequence; the furnace hearth and the furnace top are both provided with water jackets, the upper part of the furnace hearth is provided with a chute communicated with the furnace chamber, and the lower part of the furnace hearth is provided with a siphon inlet and a slag tap; the structure is characterized in that a plurality of air nozzles communicated with the furnace chamber are arranged at the upper part of the furnace cylinder, a plurality of oxygen-enriched air nozzles and natural gas nozzles communicated with the furnace chamber are arranged at the lower part of the furnace cylinder, and the oxygen-enriched air nozzles and the natural gas nozzles are alternately arranged at intervals.
Thus, after the furnace is opened, the materials enter from the chute, the oxygen-enriched gas is introduced into the oxygen-enriched gas air nozzle, the natural gas is introduced into the natural gas air nozzle, the air nozzle is arranged at the upper part of the furnace hearth and is introduced with air to ensure the oxygen concentration in the furnace cavity, the materials are smelted at high temperature, molten gold is discharged from the siphon port, and slag is discharged from the slag discharge port.
According to the utility model discloses an embodiment, can also be right the utility model discloses do further optimization, following for optimizing the technical scheme who forms afterwards:
preferably, a first-layer water jacket, a second-layer water jacket and a third-layer water jacket are arranged outside the hearth from bottom to top; and a four-layer water jacket and a flue interface water jacket are arranged outside the furnace top.
In order to further enable the natural gas to be more fully combusted, an oxygen-enriched gas air nozzle is arranged between every two adjacent natural gas air nozzles, and a natural gas air nozzle is arranged between every two adjacent oxygen-enriched gas air nozzles.
Preferably, the slag tap is provided with a slag tap water jacket.
In order to enable the natural gas and the oxygen to enter the material so as to be easier to react, the air outlets of the oxygen-enriched air nozzles and the natural gas air nozzles are obliquely arranged downwards, and the axial directions of the oxygen-enriched air nozzles and the natural gas air nozzles form an included angle α with the horizontal plane, preferably between 30 degrees and α degrees and between 45 degrees.
In order to facilitate maintenance, the lower part of the furnace hearth is provided with a safety opening.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a natural gas replaces the anthracite as fuel and reductant, has not only solved the problem that the sulphur exceeds standard in the flue gas, cleaner production to save compounding step and follow-up flue gas desulfurization's technology, reduce equipment cost.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a left side view of the alternative embodiment of fig. 1.
In the figure
1-furnace base; 2-hearth; 3-air nozzle; 4-a layer of water jacket; 5-two layers of water jackets; 6-three layers of water jackets; 7-chute; 8-flue interface water jacket; 9-four layers of water jackets; 10-brick masonry; 11-a furnace front water jacket; 12-slag tap water jacket; 13-a slag tap; 14-air nozzles; 15-oxygen-enriched gas air nozzle; 16-a siphon mouth; 17-a safety vent; 18-one layer of horizontal support bars; 19-natural gas air nozzle; 20-viewing port.
Detailed Description
An air nozzle oxygen-enriched side-blown furnace, as shown in figure 1, comprises a furnace base 1, a furnace hearth 2 and a furnace top from bottom to top in sequence. As shown in the figures 1 and 2, a plurality of air nozzles are arranged at the lower part of the furnace hearth 2, the air nozzles are mainly divided into two types, one type is an oxygen-enriched air nozzle 15, the other type is a natural gas air nozzle 19, and the oxygen-enriched air nozzle 15 is clamped between the two natural gas air nozzles 19. The upper part of the furnace cylinder 2 is provided with a chute 7 communicated with the furnace chamber and a plurality of air nozzles 14.
As shown in fig. 1, the hearth 2 is provided with a first-layer water jacket 4, a second-layer water jacket 5 and a third-layer water jacket 6 from bottom to top. The lower part of the furnace cylinder 2 is also provided with a siphon inlet 16 and a slag tap 13, and a slag tap water jacket 12 is arranged outside the slag tap 13.
The furnace top is provided with four layers of water jackets 9 and a flue interface water jacket 8. The body of the furnace top is built by 10, and the furnace top is provided with an observation port 20.
The lower part of the furnace hearth 2 is provided with a furnace platform, and a furnace platform front water jacket 11 is arranged at the furnace platform outlet. The lower part of the furnace cylinder 2 is also provided with a siphon port 16 and a safety port 17. The safety port 17 is used for maintenance.
As shown in figure 1, in the embodiment, the upper and lower air nozzles in the side-blown converter are changed into the oxygen-enriched air nozzles 15 and the natural gas air nozzles 19 which are arranged at intervals in sequence, a natural gas air nozzle 19 is clamped between the two oxygen-enriched air nozzles 15, an oxygen-enriched air nozzle 15 is clamped between the two natural gas air nozzles 19, and the number of the air nozzles is selected according to the size of the converter body. In the embodiment, the oxygen-enriched gas air nozzles 15 and the natural gas air nozzles 19 are arranged at intervals, so that the natural gas is combusted more fully, and the natural gas air nozzles 19 are arranged at two sections, so that the natural gas can enter the material more easily for reaction.
As shown in figure 3, in order to make the natural gas and oxygen enter the material to react more easily, the air outlets of the oxygen-enriched air nozzle 15 and the natural gas air nozzle 19 are arranged obliquely downwards, and the axial directions of the oxygen-enriched air nozzle 15 and the natural gas air nozzle 19 form an included angle α with the horizontal plane, preferably equal to or larger than 30 degrees and equal to or smaller than α degrees and equal to or smaller than 45 degrees.
The natural gas is low in price and cleaner and more environment-friendly than anthracite, and compared with the solid-solid reaction of coal in the smelting process, the gas-solid reaction rate of the natural gas and metal oxide is higher, so that the reaction time can be greatly shortened, and the smelting efficiency is increased.
When the device works, materials enter from the chute 7 after the furnace is opened, oxygen-enriched gas is introduced into the oxygen-enriched gas air nozzle 15, natural gas is introduced into the natural gas air nozzle 19, the air nozzle 14 is arranged at the upper part of the furnace hearth and is introduced with air to ensure the oxygen concentration in the furnace cavity, the materials are smelted at high temperature, molten gold is discharged from the siphon port 16, and slag is discharged from the slag discharge port 13.
The above-mentioned embodiments are illustrative and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and all modifications of the equivalent forms of the present invention which are obvious to those skilled in the art after reading the present invention.
Claims (7)
1. A natural gas air nozzle oxygen-enriched side-blown furnace comprises a furnace base (1), a furnace hearth (2) and a furnace top from bottom to top in sequence; water jackets are respectively arranged outside the hearth (2) and the furnace top, a chute (7) communicated with the furnace chamber is arranged at the upper part of the hearth (2), and a siphon port (16) and a slag tap (13) are arranged at the lower part of the hearth (2); it is characterized in that a plurality of air nozzles (14) communicated with the furnace chamber are arranged on the upper part of the furnace cylinder (2), a plurality of oxygen-enriched air nozzles (15) and natural gas air nozzles (19) communicated with the furnace chamber are arranged on the lower part of the furnace cylinder (2), wherein:
the oxygen-enriched gas air nozzles (15) and the natural gas air nozzles (19) are alternately arranged at intervals.
2. The natural gas air nozzle oxygen-enriched side-blown furnace of claim 1, characterized in that a first layer water jacket (4), a second layer water jacket (5) and a third layer water jacket (6) are arranged outside the furnace hearth (2) from bottom to top; and a four-layer water jacket (9) and a flue interface water jacket (8) are arranged outside the furnace top.
3. The natural gas air nozzle oxygen-enriched side-blown converter according to claim 1, wherein an oxygen-enriched gas air nozzle (15) is arranged between two adjacent natural gas air nozzles (19), and a natural gas air nozzle (19) is arranged between two adjacent oxygen-enriched gas air nozzles (15).
4. The natural gas air nozzle oxygen-enriched side-blown converter according to any one of claims 1 to 3, characterized in that a slag hole water jacket (12) is arranged at the slag hole (13).
5. The natural gas air nozzle oxygen-enriched side-blown converter according to any one of claims 1 to 3, wherein the air outlets of the oxygen-enriched air nozzle (15) and the natural gas air nozzle (19) are arranged obliquely downwards, and the axial directions of the oxygen-enriched air nozzle (15) and the natural gas air nozzle (19) form an included angle α with the horizontal plane.
6. The natural gas tuyere oxygen-enriched side-blown furnace of claim 5, wherein 30 ° - α ° -45 °.
7. A natural gas tuyere oxygen-enriched side-blown furnace according to any one of claims 1 to 3, wherein a safety vent (17) is provided at a lower portion of the hearth (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921158309.8U CN210464079U (en) | 2019-07-23 | 2019-07-23 | Natural gas air nozzle oxygen-enriched side-blown furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921158309.8U CN210464079U (en) | 2019-07-23 | 2019-07-23 | Natural gas air nozzle oxygen-enriched side-blown furnace |
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| Publication Number | Publication Date |
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| CN210464079U true CN210464079U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921158309.8U Active CN210464079U (en) | 2019-07-23 | 2019-07-23 | Natural gas air nozzle oxygen-enriched side-blown furnace |
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| Country | Link |
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| CN (1) | CN210464079U (en) |
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2019
- 2019-07-23 CN CN201921158309.8U patent/CN210464079U/en active Active
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Effective date of registration: 20210601 Address after: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee after: CENTRAL SOUTH University Address before: 410006 Second Floor of 10 Skirt Buildings, No. 1, Liandong Yougu Industrial Park, 32 Yuelian Street, Yuelu District, Changsha City, Hunan Province Patentee before: HUNAN RUIYI ZIHUAN TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20220310 Address after: 543002 room 325, third floor, information center building, No. 6, Guangyuan Avenue, Wuzhou import renewable resources processing park, Longwei District, Wuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Ruiyi Environmental Technology Co.,Ltd. Address before: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee before: CENTRAL SOUTH University |
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