CN217634591U - Anticorrosive heat retaining metallurgical stove flue gas system acid flue - Google Patents
Anticorrosive heat retaining metallurgical stove flue gas system acid flue Download PDFInfo
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- CN217634591U CN217634591U CN202221051484.9U CN202221051484U CN217634591U CN 217634591 U CN217634591 U CN 217634591U CN 202221051484 U CN202221051484 U CN 202221051484U CN 217634591 U CN217634591 U CN 217634591U
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- flue
- heat
- insulating layer
- flue gas
- layer
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- 239000002253 acid Substances 0.000 title claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 25
- 239000000779 smoke Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model belongs to the technical field of the metallurgy, a metallurgical furnace technical field is related to, concretely relates to sour flue is made to anticorrosive heat retaining metallurgical stove flue gas. The flue for producing acid from flue gas comprises a steel flue body, wherein an anticorrosive layer is laid on the inner side of the steel flue body, an inner heat-insulating layer is bonded on the outer side of the steel flue body, an outer heat-insulating layer is laid on the outer side of the inner heat-insulating layer, and a waterproof layer is further laid on the outer side of the outer heat-insulating layer. The utility model discloses sour flue of system simple structure, application scope is wide, can effectively solve the problem that current flue gas system sour flue corrosion resisting property is low and the heat preservation effect is poor, has better practicality.
Description
Technical Field
The utility model belongs to the technical field of the metallurgy, a metallurgical furnace technical field is related to, concretely relates to sour flue is made to anticorrosive heat retaining metallurgical stove flue gas.
Background
The acid making flue of the metallurgical furnace flue gas is coiled by a common Q235A steel plate, and the expansion amount of a smoke pipe is absorbed by a stainless steel corrugated compensator. In order to prevent the corrosion of acid water generated by condensation in the flue to the flue, KPI acid-resistant daub with the thickness of 30mm of the inner lining is used as an anticorrosive layer. Flue gas SO generally produced by metallurgical furnace 2 The concentration is as high as 30 to 40 percent, the dew point temperature of the smoke is as high as above 210 ℃, the problems of large-area falling of an anticorrosive coating, low-temperature corrosion and leakage of a smoke pipe and the like can occur after the smoke channel is used for a period of time, the smoke discharge of a metallurgical furnace is not smooth, the dust accumulation of an acid making smoke channel is serious, and the SO of the smoke is reduced 2 The concentration and the temperature seriously affect the normal production of a metallurgical furnace and subsequent chemical engineering, and meanwhile, the leaked flue gas can cause low-altitude pollution on a production site. The outer heat preservation of the flue for preparing acid from the flue gas of the metallurgical furnace adopts an aluminum-magnesium heat preservation felt with the specification of 400 multiplied by 400 and the thickness of 100mm, and the aluminum-magnesium heat preservation felt can be stripped and fall off under the irradiation of sunlight, the washing of snow water and the corrosion for a long time, so that the heat preservation effect is lost, acid mud and acid water are formed in the flue, and the flue is corroded, therefore, the existing heat preservation mode and the heat preservation thickness can not meet the requirements of corrosion prevention and heat preservation of the flue.
SUMMERY OF THE UTILITY MODEL
For solving the problem that the flue gas acid making of the existing metallurgical furnace has poor corrosion-resistant and heat-insulating effect and the heat-insulating layer is easy to fall off, the utility model provides a flue gas acid making of the metallurgical furnace with corrosion-resistant and heat-insulating functions, which solves the problems.
The utility model adopts the following technical scheme:
an anticorrosive and heat-insulating metallurgical furnace flue gas acid making flue comprises a steel flue body, wherein an anticorrosive layer is laid on the inner side of the steel flue body, an inner heat-insulating layer is bonded on the outer side of the steel flue body, an outer heat-insulating layer is laid on the outer side of the inner heat-insulating layer, and a waterproof layer is laid on the outer side of the outer heat-insulating layer.
Further, the anticorrosive layer: inner heat-insulating layer: the thickness ratio of the outer insulating layer is 6~8:4~6:4~6; the preferred thickness ratio is 8:5:5.
furthermore, the anticorrosive coating is made of acid-resistant quarry tile.
Furthermore, the inner heat-insulating layer and the outer heat-insulating layer are both made of silicate fiber felts.
Further, the waterproof layer adopts aluminium alloy plate.
Compared with the prior art, the beneficial effects of the utility model are as follows:
an anti-corrosion layer with a certain thickness is built in the steel flue body by using the acid-resistant cylinder bricks, so that the direct contact between corrosive flue gas and the steel flue body can be effectively isolated, and the corrosion of the flue gas to the steel flue body is avoided; meanwhile, the acid-resistant quarry tile plays a certain heat storage role, and when the temperature of the flue gas is higher than that of the acid-resistant quarry tile, the acid-resistant quarry tile absorbs the heat in the flue gas and stores the heat in the tile, so that the temperature of the flue gas is reduced; when the temperature of the flue gas is lower than that of the acid-resistant quarry tile, the heat stored in the acid-resistant quarry tile is released to heat the flue gas, so that the temperature of the flue gas is increased, and the temperature fluctuation of the flue gas is ensured to be small. In addition, the characteristics of poor heat conduction and small thermal expansion coefficient of the acid-resistant quarry tile can be utilized to solve the problem of thermal expansion compensation of the flue, thereby avoiding air leakage of the flue and improving SO of the flue gas 2 Concentration, which creates favorable conditions for subsequent chemical acid preparation; the inner and outer heat-insulating layers are laid outside the steel flue body, so that the heat loss of flue gas is greatly reduced, the problem of condensation of the flue gas in the flue is solved, acid sludge and acid water are prevented from being formed, the flue is corroded, the heat-insulating and heat-insulating requirements of the flue are met, and the long-period stable operation of the flue is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, 1-acid-resistant cylinder brick, 2-steel flue body, 3, adhesive layer, 4-silicate fiber felt, 5-galvanized iron wire mesh and 6-aluminum alloy plate.
Detailed Description
The invention is further explained with reference to the drawings and the detailed description.
As shown in figure 1, the corrosion-resistant and heat-insulating metallurgical furnace flue gas acid making flue comprises a steel flue body 2, wherein an anticorrosive layer is arranged on the inner side of the steel flue body 2, and the anticorrosive layer is formed by annularly building acid-resistant quarry bricks 1 with the thickness of 80mm and the acid resistance of more than or equal to 98%. A layer of commercially available neutral high-temperature-resistant adhesive is coated on the periphery of the steel flue body 2, then the steel flue body is wrapped by a silicate fiber felt 4 with the thickness of 50mm to form an inner heat-insulating layer, and a galvanized wire mesh 5 with the wire diameter of 2mm is used for wrapping and fixing the periphery of the inner heat-insulating layer; secondly, wrapping the surface of the galvanized iron wire mesh 5 with a silicate fiber felt 4 with the thickness of 50mm serving as an outer heat insulation layer for the second time, and then wrapping and fixing the silicate fiber felt 4 with a galvanized iron wire mesh 5 with the diameter of 2mm for the second time; and finally, wrapping the surface of the outer heat-insulating layer by using an aluminum alloy plate 6 with the thickness of 0.8mm as a waterproof layer so as to avoid direct erosion of sunlight and rainwater on the outer heat-insulating layer of the flue and further enhance the heat-insulating effect of the flue.
Claims (6)
1. The utility model provides an anticorrosive heat retaining metallurgical stove flue gas system acid flue which characterized in that: the anti-corrosion steel flue comprises a steel flue body, wherein an anti-corrosion layer is laid on the inner side of the steel flue body, an inner heat-insulating layer is bonded on the outer side of the steel flue body, an outer heat-insulating layer is laid on the outer side of the inner heat-insulating layer, and a waterproof layer is laid on the outer side of the outer heat-insulating layer.
2. The flue for producing acid from flue gas of a metallurgical furnace, which is corrosion-resistant and heat-insulating, according to claim 1, is characterized in that: the anticorrosive coating comprises: inner heat-insulating layer: the thickness ratio of the outer insulating layer is 6~8:4~6:4~6.
3. The flue for producing acid from flue gas of a metallurgical furnace, which is corrosion-resistant and heat-insulating, according to claim 1, is characterized in that: the anticorrosive coating comprises: inner heat-insulating layer: the preferable thickness ratio of the outer insulating layer is 8:5:5.
4. the flue for producing acid from flue gas of a metallurgical furnace, which is corrosion-resistant and heat-insulating, according to claim 1, is characterized in that: the anticorrosive layer is made of acid-resistant quarry tile.
5. The flue for producing acid from flue gas of a metallurgical furnace, which is corrosion-resistant and heat-insulating, according to claim 1, is characterized in that: the inner heat-insulating layer and the outer heat-insulating layer are both made of silicate fiber felts.
6. The flue for producing acid from flue gas of a metallurgical furnace, which is corrosion-resistant and heat-insulating, according to claim 1, is characterized in that: the waterproof layer adopts aluminum alloy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221051484.9U CN217634591U (en) | 2022-05-05 | 2022-05-05 | Anticorrosive heat retaining metallurgical stove flue gas system acid flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221051484.9U CN217634591U (en) | 2022-05-05 | 2022-05-05 | Anticorrosive heat retaining metallurgical stove flue gas system acid flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217634591U true CN217634591U (en) | 2022-10-21 |
Family
ID=83650887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221051484.9U Active CN217634591U (en) | 2022-05-05 | 2022-05-05 | Anticorrosive heat retaining metallurgical stove flue gas system acid flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217634591U (en) |
-
2022
- 2022-05-05 CN CN202221051484.9U patent/CN217634591U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240315 Address after: 737199 No. 2 Jianshe Road, Jinchuan District, Jinchang City, Gansu Province (east of Beijing Road, west of Heya Road, south of Guiyang Road) Patentee after: Jinchuan Group Copper Gui Co.,Ltd. Country or region after: China Address before: No.98, Jinchuan Road, Jinchuan District, Jinchang City, Gansu Province 737100 Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |