CN210560238U - Novel repair structure of dry quenching furnace lining - Google Patents
Novel repair structure of dry quenching furnace lining Download PDFInfo
- Publication number
- CN210560238U CN210560238U CN201921444660.3U CN201921444660U CN210560238U CN 210560238 U CN210560238 U CN 210560238U CN 201921444660 U CN201921444660 U CN 201921444660U CN 210560238 U CN210560238 U CN 210560238U
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- Prior art keywords
- stainless steel
- bracket
- net rack
- steel net
- dry quenching
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- 238000010791 quenching Methods 0.000 title claims abstract description 25
- 230000000171 quenching Effects 0.000 title claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 56
- 239000010935 stainless steel Substances 0.000 claims abstract description 56
- 239000011449 brick Substances 0.000 claims abstract description 20
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 16
- 239000000571 coke Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 4
- 230000001808 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 230000003628 erosive Effects 0.000 abstract description 6
- 230000002349 favourable Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 6
- 229910052863 mullite Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000011858 nanopowder Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N Silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000006079 antiknock agent Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical group [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Abstract
The utility model discloses a novel repair structure of a coke dry quenching furnace lining, which comprises refractory bricks laid on the inner wall position of a coke dry quenching furnace shell, wherein the inner wall position of the refractory bricks is provided with a plurality of brackets which are uniformly distributed around the center of the coke dry quenching furnace shell, a beam is arranged above the brackets, the brackets comprise bracket bodies and inclined first stainless steel scaffolds, the bracket bodies are casting materials made of wear-resistant ceramic materials, and the first stainless steel scaffolds are arranged at the inner positions of the bracket bodies; the crossbeam includes crossbeam body and annular stainless steel rack two, and the crossbeam body is wear-resisting ceramic material's pouring material, and with bracket body pouring formula structure as an organic whole, the beneficial effects of the utility model are that: can utilize the stainless steel rack to make up bracket and ring beam into integral structure to the wear-resisting ceramic material of pouring makes bracket and ring beam position whole more firm, has improved the bulk strength and the erosion resistance performance in chute district, reduces the frequency of repairing, is favorable to the normal clear of production.
Description
Technical Field
The utility model belongs to the technical field of dry quenching furnace structural design, concretely relates to novel restoration structure of dry quenching furnace inside lining.
Background
The dry quenching technology is to utilize cold inert gas (waste gas after combustion) to exchange heat with red hot red coke in a dry quenching furnace so as to cool the red coke. The inert gas absorbing the heat of the red coke transfers the heat to the dry quenching furnace to generate steam, the cooled inert gas is blown into the dry quenching furnace by a circulating fan to cool the red coke, and the steam generated by the dry quenching furnace is either merged into a steam pipe network in a plant or is sent to generate power. Structurally, the dry quenching furnace mainly comprises a furnace shell and refractory bricks built on the inner wall of the furnace shell, the furnace structure mainly comprises a furnace top, a prestoring area, a chute area and a cooling area, and an annular air passage is arranged around the prestoring area. In the actual working process, the bracket of the dry quenching furnace at the chute area and the ring beam above the bracket are made of refractory bricks, the overall performance is poor, the dry quenching furnace is affected by physical and chemical factors during working, the built refractory bricks are seriously damaged, the phenomena of falling and brick falling are caused, frequent repair is needed, and the normal production operation is influenced.
Disclosure of Invention
The utility model aims to solve the technical problem, the utility model provides a novel restoration structure of dry coke quenching furnace inside lining can utilize the stainless steel rack to make up bracket and ring beam into monolithic structure to the wear-resisting ceramic material of pouring makes bracket and ring beam position whole more firm, has improved the bulk strength and the erosion resistance performance in chute district, reduces the frequency of repairing, is favorable to the normal clear of production.
The utility model adopts the technical proposal that: a novel repair structure of a dry quenching furnace lining comprises refractory bricks built on the inner wall of a furnace shell of the dry quenching furnace, wherein a plurality of brackets uniformly distributed around the center of the furnace shell are arranged on the inner wall of the refractory bricks, a cross beam is arranged above the brackets, the brackets comprise bracket bodies and inclined stainless steel net racks I, the bracket bodies are made of castable of wear-resistant ceramic materials, and the stainless steel net racks I are arranged in the inner positions of the bracket bodies; the beam comprises a beam body and an annular stainless steel net rack II, the beam body is made of a castable wear-resistant ceramic material and is cast with the bracket body into an integral structure, the stainless steel net rack II is arranged in the beam body at a position close to the inner diameter, and the front end of the stainless steel net rack II is welded with the upper end of the stainless steel net rack I; the second stainless steel net rack is formed by sequentially welding a plurality of arc-shaped stainless steel frames.
The utility model discloses a refractory brick pouring material, including bracket body, crossbeam body, refractory brick, castable, refractory brick, the overall structure that bracket body and crossbeam body formed is equipped with a plurality of connecting rods on being close to the position of the refractory brick of stove outer covering inner wall, and the one end fixed connection of connecting rod is buried underground in the castable in refractory brick inside, the other one end, and the equal body coupling in both ends of connecting rod has outside open forked portion.
The first stainless steel net rack is of a V-shaped structure, and the end part of the side cross rod of the first stainless steel net rack extends to the inner position of a refractory brick on the inner wall of the furnace shell.
The bracket comprises a bracket body and a first inclined stainless steel net rack, the bracket body is made of a castable wear-resistant ceramic material, and the first stainless steel net rack is arranged in the bracket body; the purpose of this is: the bracket is formed by a pouring material made of a wear-resistant ceramic material and a stainless steel net rack, the pouring material made of the wear-resistant ceramic material has the characteristics of stable structure, high strength and erosion resistance, the service performance of the bracket can be improved, and the stainless steel net rack is used as an anchoring part, so that the stability of the pouring material can be improved.
The beam comprises a beam body and an annular stainless steel net rack II, the beam body is made of a castable wear-resistant ceramic material and is cast with the bracket body into an integral structure, the stainless steel net rack II is arranged in the beam body at a position close to the inner diameter, and the front end of the stainless steel net rack II is welded with the upper end of the stainless steel net rack I; the purpose of this is: the traditional beam is formed by building refractory bricks, the structural stability is poor, the castable made of wear-resistant ceramic materials is matched with a stainless steel net rack, the stability of the beam structure can be improved, the beam structure has the characteristics of high strength and erosion resistance, and the beam formed by building cannot generate dimensional deviation.
The stainless steel net rack II is formed by sequentially welding a plurality of arc-shaped stainless steel frames; the purpose of this is: the circular arc stainless steel frame can form a whole circular structure when being welded, and two stainless steel frames welded with each other can be transited smoothly, thereby being beneficial to improving the structural stability of the two whole stainless steel net racks.
The utility model has the advantages that: can utilize the stainless steel rack to make up bracket and ring beam into integral structure to the wear-resisting ceramic material of pouring makes bracket and ring beam position whole more firm, has improved the bulk strength and the erosion resistance performance in chute district, reduces the frequency of repairing, is favorable to the normal clear of production.
Drawings
FIG. 1 is a three-dimensional structure diagram of a coke dry quenching furnace of the present invention;
FIG. 2 is a front view of the chute section of the present invention;
fig. 3 is a schematic transverse cross-sectional view of the chute area of the present invention;
fig. 4 is a schematic longitudinal cross-sectional view of the chute section of the present invention;
FIG. 5 is a structural view of the connecting rod of the present invention;
FIG. 6 is a structural diagram of a single stainless steel frame in the second stainless steel grid frame of the present invention;
fig. 7 is a structural diagram of the first stainless steel net rack of the present invention.
The labels in the figure are: 1. a bracket; 2. a cross beam; 3. a first stainless steel net rack; 4. pouring a material; 5. a second stainless steel net rack; 6. a connecting rod; 7. a crotch part; 8. a stainless steel frame.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the novel repair structure of the lining of the dry quenching furnace comprises refractory bricks built on the inner wall of the shell of the dry quenching furnace, wherein a plurality of brackets 1 which are uniformly distributed around the center of the shell are arranged on the inner wall of the refractory bricks, a cross beam 2 is arranged above the brackets 1, each bracket 1 comprises a bracket 1 body and an inclined stainless steel net rack I3, the bracket 1 body is made of a casting material 4 made of a wear-resistant ceramic material, and the stainless steel net rack I3 is arranged in the inner position of the bracket 1 body; the beam 2 comprises a beam 2 body and an annular stainless steel net rack II 5, the beam 2 body is made of a castable 4 of wear-resistant ceramic materials and is cast with the bracket 1 body into an integral structure, the stainless steel net rack II 5 is arranged in the beam 2 body at a position close to the inner diameter, and the front end of the stainless steel net rack II 5 is welded with the upper end of the stainless steel net rack I3; the stainless steel net rack II 5 is formed by sequentially welding a plurality of arc-shaped stainless steel frames 8.
The overall structure that 1 body of bracket and 2 bodies of crossbeam formed is equipped with a plurality of connecting rods 6 on being close to the position of the resistant firebrick of stove outer covering inner wall, and the one end fixed connection of connecting rod 6 is inside resistant firebrick, and one end is buried underground in castables 4 in addition, and the both ends homogeneous body connection of connecting rod 6 has outside open crotch portion 7, can be with the resistant firebrick firm in connection of castables 4 and stove outer covering inner wall through connecting rod 6, improves stability.
Stainless steel rack 3 is V type structure, and the side crossbar end of stainless steel rack 3 extends to the firebrick internal position of stove outer covering inner wall for realize the fixed of stainless steel rack 3, the anchor assembly of 1 position of bracket is regarded as to stainless steel rack 3 of V type structure, is favorable to improving the stability of bracket 1 structure.
Specifically, the components of the wear-resistant ceramic material are as follows:
| raw materials | Particle size distribution | Weight percent of |
| Electrically fused mullite grains | 10-1mm | 20-35% |
| Fused compact corundum particles | 15-10mm | 10-25% |
| Zirconia corundum particles | 5-1mm | 10-15% |
| Sintered corundum particles | 3-0mm | 5-20% |
| Composite ceramic nano powder | ＜2um | 10-1% |
| Composite antiknock agent | 0.5-3% | |
| Composite alkaline water agent | 0.1-0.5% | |
| Industrial softened water | 4-7% |
The composite ceramic nano powder has high activity, high dispersibility and the like, and the addition of the composite ceramic nano powder can improve the construction performance of the product, reduce the water consumption, reduce the porosity and increase the volume density and the strength; when the product is sintered, the sintering temperature can be reduced due to high activity, the generation of a binding phase is promoted, and the strength and the hardness of the product are improved; the corrosion of the product to chemical substances such as carbon monoxide, sulfur dioxide and the like in use can be improved; in the aspect of mechanics, the fracture toughness of the product is enhanced, the ductility is reduced, the thermal shock stability of the product is improved, and the damage is reduced.
In the using process, the silicon dioxide and the aluminum oxide in the composite powder generate mullite at 1050 ℃, the crystal form of the mullite is a needle-shaped and long-column-shaped structure which is mutually staggered, and the zirconium oxide forms a square shape at about 1000 ℃ by monoclinic, so that the fracture property can be reduced, and the toughness of the material can be improved; at the temperature, the silicon nitride, the silicon carbide and the chromium oxide have little structural change and still maintain high strength, erosion resistance and stability. Therefore, the generated mullite phase is mutually interwoven and filled with other materials, and the performance of the product is improved. The properties thereof are as follows;
product bulk density (mg/cm)2)＞2.80；
The compressive strength (110 MPa) is more than 85;
the thermal shock stability (1100 degrees water cooling) is more than 70 times;
the abrasion resistance value (cm) is less than 6.
Claims (3)
1. The utility model provides a novel restoration structure of dry coke quenching stove inside lining which characterized in that: the bracket comprises a refractory brick built on the inner wall of a furnace shell of the dry quenching furnace, wherein a plurality of brackets which are uniformly distributed around the center of the furnace shell are arranged on the inner wall of the refractory brick; the beam comprises a beam body and an annular stainless steel net rack II, the beam body is made of a castable wear-resistant ceramic material and is cast with the bracket body into an integral structure, the stainless steel net rack II is arranged in the beam body at a position close to the inner diameter, and the front end of the stainless steel net rack II is welded with the upper end of the stainless steel net rack I; the second stainless steel net rack is formed by sequentially welding a plurality of arc-shaped stainless steel frames.
2. The novel repair structure for the lining of the coke dry quenching furnace as claimed in claim 1, wherein: the overall structure that bracket body and crossbeam body formed is equipped with a plurality of connecting rods on being close to the position of the resistant firebrick of stove outer covering inner wall, and the one end fixed connection of connecting rod is buried underground in the castable in resistant firebrick inside, other one end, and the equal body coupling in both ends of connecting rod has outside open forked portion.
3. The novel repair structure for the lining of the coke dry quenching furnace as claimed in claim 1, wherein: the first stainless steel net rack is of a V-shaped structure, and the end part of the side cross rod of the first stainless steel net rack extends to the inner position of a refractory brick on the inner wall of the furnace shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921444660.3U CN210560238U (en) | 2019-09-02 | 2019-09-02 | Novel repair structure of dry quenching furnace lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921444660.3U CN210560238U (en) | 2019-09-02 | 2019-09-02 | Novel repair structure of dry quenching furnace lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210560238U true CN210560238U (en) | 2020-05-19 |
Family
ID=70630771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921444660.3U Active CN210560238U (en) | 2019-09-02 | 2019-09-02 | Novel repair structure of dry quenching furnace lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210560238U (en) |
-
2019
- 2019-09-02 CN CN201921444660.3U patent/CN210560238U/en active Active
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| GR01 | Patent grant | ||
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