CN212102719U - Gasification furnace vault inside lining structure and gasification furnace - Google Patents
Gasification furnace vault inside lining structure and gasification furnace Download PDFInfo
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- CN212102719U CN212102719U CN202020461811.2U CN202020461811U CN212102719U CN 212102719 U CN212102719 U CN 212102719U CN 202020461811 U CN202020461811 U CN 202020461811U CN 212102719 U CN212102719 U CN 212102719U
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Abstract
The utility model provides a gasifier vault inner liner structure, include by outside setting gradually of gasifier studio face brick, the pouring material layer, compressible bed of material, the box hat, the fire door has been seted up on the box hat, the compressible bed of material with the box hat closely bonds fixedly, the pouring material layer with the inseparable bonding of compressible bed of material is fixed, to the fire face brick with the pouring material layer closely bonds fixedly, to the fire face brick the pouring material layer the compressible bed of material all extends to the fire door all around, forms with the arch structure of fire door as the center. The utility model discloses cancel the back lining brick layer structure among the prior art, only set up the pouring material layer between to the fireside brick and the compressible bed of material to the advantage of the low thermal conductivity of performance pouring material makes furnace shell temperature reduce about 8 ~ 11 ℃ down, has reduced the probability that the gasifier vault overtemperature.
Description
Technical Field
The utility model belongs to the technical field of the gasifier technique and specifically relates to a gasifier vault inner liner structure and gasifier are related to.
Background
The pressurized coal water slurry gasifying furnace is one key coal liquefying apparatus, and has coal as material, which is mixed with high temperature steam and oxygen to produce chemical reaction to convert solid coal into CO, H2, CH4 and other gas for synthesizing ammonia and city gas.
The arch crown of the gasification furnace is provided with a refractory material lining, wherein the refractory material lining comprises an inside-out facing brick, a backing brick, a casting material layer and a compressible material layer. During the operation of the gasification furnace, the lower part of the arch crown of the structure is subjected to long-term scouring and corrosion, weak parts are easily formed, and therefore the overtemperature is caused. And the fire-facing surface refractory material in the structure is corroded and consumed by half, a straight seam is easy to appear to cause air blowby, the gasification furnace is shut down 3 times in an unplanned manner due to the fact that air blowby at the vault exceeds the temperature every year, the maintenance workload of replacing a set of vault refractory bricks is large, the consumed materials are more, the price is high, and huge economic loss is caused even when the gasification furnace is shut down in an unplanned manner for a long time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gasifier vault inner liner structure and gasifier has solved the easy super warm technical problem of gasifier vault that exists among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a gasifier vault inner liner structure, include by outside setting gradually of gasifier studio face brick, the pouring material layer, compressible bed of material, the box hat, the fire door has been seted up on the box hat, the compressible bed of material with the box hat closely bonds fixedly, the pouring material layer with the inseparable bonding of compressible bed of material is fixed, to the fire face brick with the pouring material layer closely bonds fixedly, to the fire face brick the pouring material layer the compressible bed of material all extends to the fire door all around, forms with the arch structure of fire door as the center.
Preferably, the fireward facing brick is a high chromium brick layer.
Preferably, the castable layer is a chrome corundum castable layer.
Preferably, the compressible layer is a refractory rock wool panel.
Preferably, an expansion joint is arranged at the connecting position of the arch structure and the gasification furnace cylinder.
Preferably, the thickness of the high-chromium brick layer is 300 mm.
Preferably, the thickness of the chromium corundum castable layer is 239 mm.
Preferably, the thickness of the refractory rock wool plate is 30 mm.
Preferably, the steel shell has a thickness of 60 mm.
The utility model also provides a gasifier, include as above gasifier vault inner liner structure.
The utility model provides an among the technical scheme, adopt to the lining structure of fiery facing brick, the castable layer, the compressible material layer, the steel-shelled, cancelled back lining brick layer structure among the prior art, but adopt the castable layer to replace to the advantage of the low thermal conductivity of performance castable makes furnace shell temperature reduce about 8 ~ 11 ℃ down, has reduced the probability of gasifier vault overtemperature. In addition, the production efficiency of the casting material is higher than that of the backing brick, so that the casting material can be transported to the site by a seller before construction, a storehouse is not needed, the service life of the storehouse is short, and the generated storage cost is low; the construction efficiency is high, and the maintenance construction period is shortened; the pouring material layer has good integrity, no seam and good air tightness, avoids the phenomena of oven drying or cracking caused by too large or too small seam of backing brick due to construction reasons or backing brick extrusion, reduces or avoids vault air leakage and over-temperature, has little heat dissipation loss and saves energy; the backing bricks are replaced by the castable, so that part of purchasing cost can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the lining of the vault of the gasification furnace provided by the present invention;
fig. 2 is a schematic diagram of the inner lining structure of the vault of the gasification furnace in the prior art provided by the present invention.
In the figure: 1. facing the fire face brick; 2. pouring a material layer; 3. a compressible material layer; 4. a steel shell; 5. a furnace mouth; 6. expanding the seam; 7. a backing brick layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a gasifier vault lining structure, includes the facing tile 1, the castable layer 2, the compressible layer 3, the steel shell 4 that set gradually outward from the gasifier studio, the furnace mouth 5 is opened on the steel shell 4 and the compressible layer 3 is closely adhered and fixed with the steel shell 4, the castable layer 2 is closely adhered and fixed with the compressible layer 3, the facing tile 1 is closely adhered and fixed with the castable layer 2, the facing tile 1, the castable layer 2, the compressible layer 3 all extend to the periphery of the furnace mouth 5, form the arch structure with the furnace mouth 5 as the center, the letter in fig. 1 represents different brick types, the multiple brick types are combined together to form the arch structure, compare with the facing tile 1, the backing tile, the castable layer 2, the compressible layer 3 structure in the prior art, the utility model cancels the backing tile, only sets up the castable layer 2 between the facing tile 1 and the compressible layer 3, the thickness of the castable layer 2 can be properly thickened, so that the advantage of low thermal conductivity of the castable is exerted, the temperature of the furnace shell is reduced by about 8-11 ℃, and the probability of overtemperature of the vault of the gasifier is reduced.
It should be noted that, compared with the gasification furnace vault lining structure in the prior art, the utility model also has the following advantages:
the storage cost of a warehouse is saved, the production efficiency of the castable is 3-8 times higher than that of a backing brick, the castable can be transported to the site by a seller before construction, the warehouse is not needed, or the service life of the warehouse is short, and the generated storage cost is low; the construction efficiency is high, the maintenance construction period is shortened, the construction mechanization degree is high, and the construction efficiency is 5-15 times higher than that of the masonry of backing bricks; the integrated structure has the advantages of good integrity, no seam and good air tightness, avoids the phenomena of oven drying or cracking caused by too large or too small seam of the backing brick due to construction reasons or the backing brick is pulled open or extruded during use, reduces or avoids vault air leakage and over-temperature, has less heat dissipation loss and saves energy; the quantity of the vault lining materials is reduced, and the procurement cost is reduced. The volume density of the casting material is more than or equal to 2.90g/cm3, the volume density of the backing brick is more than or equal to 3.25g/cm3, and the backing brick is replaced by the casting material, so that part of purchasing cost can be reduced.
Specifically, the high-chromium facing brick 1 is a high-chromium brick layer, and the high-chromium brick is a shaped refractory product with the chromium oxide content of not less than 75% and the chromium oxide, aluminum oxide and zirconium oxide content of not less than 98% prepared by using chromium oxide and aluminum oxide as main raw materials or introducing a small amount of zirconium oxide and sintering at high temperature. The high-chromium brick is a chromium oxide product produced by taking industrial pure chromium green as a main raw material, has the characteristics of excellent corrosion resistance, high normal-temperature compressive strength, high-temperature strength, excellent wear resistance, high refractoriness, excellent thermal shock resistance, good high-temperature volume stability and the like, and is widely applied to a coal gasifier lining material and a coal water slurry pressurized gasifier working surface lining.
The casting material layer 2 is a chrome corundum casting material layer, the chrome corundum essential mineral composition is an alpha-Al 2O3-Cr2O3 solid solution, and the secondary mineral composition is a refractory brick with a small amount of composite spinel (or without composite spinel) and with the chromium oxide content of 1-30%. There are two kinds of cast chrome corundum bricks and sintered chrome corundum bricks. The chromium corundum pouring material layer is prepared by adopting a slurry pouring method, alpha-Al 2O3 powder and chromium oxide powder are uniformly mixed, a dispergator and an organic adhesive are added to prepare thick slurry, meanwhile, partial chromium corundum clinker is added, a brick blank is prepared by a grouting method, and then the brick blank is sintered. Can be used as lining of glass kiln, cover plate brick of drawing glass flow hole, and backing of molten iron pretreatment device, garbage incinerator, coal water slurry pressurized gasifier, etc.
The compressible material layer 3 is a refractory rock wool board, the refractory rock wool board is mainly made of a heat-insulating layer material produced by a pendulum method, and the rock wool board is an inorganic fiber board made of basalt as a main raw material through a series of process processes such as high-temperature melting, fiberization treatment, product post-processing and the like. It has excellent heat insulating performance, sound absorbing performance, fireproof performance and light weight, and is one new kind of building material.
As optional embodiment, the utility model discloses the thickness on well high chromium brick layer is 300mm, and the thickness on chromium corundum castable layer is 239mm, and the thickness of refractory rock wool board is 30mm, and 4 thickness of box hat are 60 mm.
In addition, an expansion joint 6 is arranged at the connecting position of the arch structure and the gasification furnace cylinder, so that the lining masonry structure expands due to the temperature when the furnace is heated in the production process. In order to prevent damage to the kiln lining structure by expansion. The expansion of the lining structure of the kiln of the small-sized furnace is not greatly influenced, and the expansion joint of the lining structure of the small-sized furnace is usually compensated by the compression of the brick joint slurry and the gap. However, when a large-scale furnace is produced at a high temperature for a long time, it is not sufficient to compensate for thermal expansion only by compression of the mortar joint, and a proper expansion joint must be left for precaution.
The actual measured temperatures of the material layers before and after the improvement are further explained by combining a chart, wherein the temperature of each interface of the lining layer before the improvement is shown in table 1, the temperature of each interface of the lining layer after the improvement is shown in table 2, wherein the radius refers to the radius from each lining layer to the center of a dome, backing bricks in the prior art are generally low-chrome brick layers, and the calculation is carried out according to the data in tables 1 and 2, so that the temperature of the steel shell 4 of the gasification furnace is reduced by about 8-11 ℃ before the improvement after the backing bricks are removed.
TABLE 1
TABLE 2
In addition, the improved vault lining structure also greatly reduces the purchase cost, before the improvement, the time consumption of replacing one set of vault firebrick each time is about 10 days, the labor cost is about 10.8 ten thousand yuan, after the improvement, the time consumption of replacing one set of vault firebrick is about 7 days, and the labor cost is about 7.5 ten thousand yuan. The labor cost is saved by about 3.3 ten thousand yuan.
Before the gasification furnace is used for modifying the arch roof lining structure, the gasification furnace is stopped for 3 times in an unintended way due to the fact that the air blowby of the arch roof exceeds the temperature every year, and direct economic loss is about 500 ten thousand yuan. After the improvement, the service life of the vault refractory brick is prolonged, the material cost and the construction cost are saved, the potential safety hazard in the operation of a system is eliminated, and the long-period stable operation of the gasification furnace is ensured. The direct effect is created by about 500 ten thousand yuan without unscheduled parking due to the overtemperature of the vault; meanwhile, two sets of vault fire-facing surface refractory bricks can be saved every year, 200 ten thousand yuan can be directly created, about 27.4 ten thousand yuan of vault backing bricks and heavy castable are saved, and about 15 ten thousand yuan of construction cost is saved. Can create about 742.4 ten thousand yuan of effect each year, consequently, the utility model provides a gasifier vault inside lining structure possesses wide development prospect.
The specific embodiment also provides a gasification furnace, which comprises the gasification furnace vault and can achieve the same effect, and the furnace shell temperature is reduced by about 8-11 ℃, so that the probability of overtemperature of the gasification furnace vault is reduced.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a gasifier vault inner liner structure, its characterized in that includes by outside setting gradually of gasifier studio to fire face brick (1), the castable layer (2), compressible bed of material (3), box hat (4), furnace mouth (5) have been seted up on box hat (4), compressible bed of material (3) with box hat (4) closely adhere fixedly, the castable layer (2) with compressible bed of material (3) closely adhere fixedly, to fire face brick (1) with the castable layer (2) closely adhere fixedly, to fire face brick (1) the castable layer (2) compressible bed of material (3) all extend to furnace mouth (5) around, form with furnace mouth (5) are the dome structure at center.
2. The gasifier vault lining structure according to claim 1, characterized in that said fireward brick (1) is a high chrome brick layer.
3. The gasifier vault lining structure according to claim 1, characterized in that said castable layer (2) is a chrome corundum castable layer.
4. The gasifier dome lining structure of claim 1, characterized in that the compressible layer (3) is a refractory rock wool slab.
5. The gasifier vault lining structure according to claim 1, characterized in that an expansion joint (6) is provided at the connection position of said arch structure and gasifier cylinder.
6. The gasifier dome liner structure of claim 2, wherein the thickness of the high chrome brick layer is 300 mm.
7. The gasifier dome inner liner structure of claim 3, wherein the thickness of the chrome corundum castable layer is 239 mm.
8. The gasifier dome inner liner structure of claim 4, wherein the thickness of the refractory rock wool slab is 30 mm.
9. The gasifier vault lining structure according to claim 1, characterized in that said steel shell (4) has a thickness of 60 mm.
10. A gasifier comprising a gasifier dome according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020461811.2U CN212102719U (en) | 2020-04-01 | 2020-04-01 | Gasification furnace vault inside lining structure and gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020461811.2U CN212102719U (en) | 2020-04-01 | 2020-04-01 | Gasification furnace vault inside lining structure and gasification furnace |
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| CN212102719U true CN212102719U (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385700A (en) * | 2022-08-04 | 2022-11-25 | 新疆八一钢铁股份有限公司 | Refractory material suitable for COREX furnace smelting reduction gasification furnace |
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2020
- 2020-04-01 CN CN202020461811.2U patent/CN212102719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385700A (en) * | 2022-08-04 | 2022-11-25 | 新疆八一钢铁股份有限公司 | Refractory material suitable for COREX furnace smelting reduction gasification furnace |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220424 Address after: No. 1666, Cuizhu Road, industrial park, ganquanbao economic and Technological Development Zone, Urumqi, Xinjiang Uygur Autonomous Region 831408 Patentee after: YANKUANG XINJIANG COAL CHEMICAL CO.,LTD. Address before: 830001 Room 601, unit 2, building 10, phase II, Jinxin Garden community, 257 East Kashgar Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region Patentee before: Li Guohui |
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| TR01 | Transfer of patent right |