CN219010219U - Cracking furnace wall structure - Google Patents
Cracking furnace wall structure Download PDFInfo
- Publication number
- CN219010219U CN219010219U CN202222786046.3U CN202222786046U CN219010219U CN 219010219 U CN219010219 U CN 219010219U CN 202222786046 U CN202222786046 U CN 202222786046U CN 219010219 U CN219010219 U CN 219010219U
- Authority
- CN
- China
- Prior art keywords
- furnace
- cavity
- vacuum
- heat
- vacuum cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model relates to a cracking furnace wall structure, which comprises a furnace lining, a furnace wallboard and a vacuum cavity; the furnace lining is made of refractory and heat-insulating materials and is arranged on the inner side of the furnace body to play a role in heat insulation and heat preservation of the first layer; the furnace wallboard is a supporting structure of the furnace wall; the vacuum cavity is a closed cavity, a local supporting block is arranged in the vacuum cavity, the outside of the vacuum cavity is connected with a pressure gauge and a shower guide, the shower guide is externally connected with a vacuum pumping device, the pressure gauge indicates the vacuum degree in the cavity, and the vacuum cavity plays a role in heat insulation and heat preservation of a second layer. The structure can effectively improve the heat insulation effect of the heating furnace wall body, reduce the temperature of the furnace wall plate, further reduce the heat emission in the furnace, and effectively save energy.
Description
Technical Field
The utility model relates to the field of industrial furnaces, in particular to a furnace wall structure. The utility model also relates to an ethylene cracking furnace with the furnace wall structure.
Background
It is known that the total energy consumption of ethylene cracking furnaces is more than 50% of the total energy consumption of ethylene units, and the heat loss of the cracking furnaces is equal to the sum of the smoke exhaust loss, the incomplete combustion loss of fuel and the heat dissipation loss. In recent years, with the development of the combustion technology of an ethylene cracking furnace, under a certain excess air coefficient, incomplete combustion in flue gas can be effectively controlled, and the loss of incomplete combustion of fuel can be ignored. The heat dissipation loss is related to the temperature of the furnace wall plate, the wind speed and the ambient temperature, and the higher the temperature of the furnace wall plate is, the higher the wind speed is, and the lower the ambient temperature is, the larger the heat dissipation loss is. The exhaust loss of the ethylene cracking furnace is related to the exhaust temperature and the exhaust amount, and when the exhaust amount is constant, the higher the exhaust temperature is, the larger the exhaust loss is.
In the prior art, a lining and a furnace wallboard structure are generally adopted for heat insulation, but the heat conductivity coefficient of the lining material is large at present, and the surface temperature of the furnace wallboard is still higher than 60 ℃ when the lining is operated at the thickness of 320 mm. And the inner lining can be gradually pulverized, attenuated and the heat conductivity coefficient is increased after the inner lining is operated for a period of time, so that the heat dissipation loss is increased.
How to reduce the temperature of the furnace wall plate of the cracking furnace and the energy consumption of the cracking furnace is a technical problem which needs to be considered by the person skilled in the art. Patent document CN203947074U discloses a furnace wall enhanced heat transfer lining structure of a cracking furnace, which is characterized in that enhanced heat transfer refractory bricks are arranged on the existing lining wall, so that the radiation and convection heat transfer effects in the cracking furnace are enhanced, the wall temperature is reduced, but the cooling process is slow.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a cracking furnace wall structure which can further reduce the temperature of a furnace wall plate and effectively save energy.
The technical scheme of the utility model is as follows:
the utility model provides a pyrolysis furnace wall body cooling structure which characterized in that includes:
the furnace lining is arranged on the inner side of the wall body and adopts a fireproof and heat-insulating material as a first heat-insulating layer;
a furnace wallboard arranged outside the furnace lining and used as a supporting sealing layer;
the vacuum cavity is arranged on the outer wall of the furnace wallboard and is used as a second heat insulation layer.
The utility model further provides an external pressure gauge of the vacuum cavity, which is used for measuring the vacuum degree in the vacuum cavity.
The utility model further provides that the vacuum cavity is externally connected with a vacuum pumping device and is used for maintaining the vacuum degree in the vacuum cavity.
The utility model further provides that the support blocks are arranged in the vacuum cavity, and the surface of the cavity is isolated in the vacuumizing or mounting process, so that the surface lamination of the cavity is avoided, and the convection heat transfer is reduced.
The utility model further provides that the lining is formed by compounding refractory materials, heat-insulating materials and anchoring pieces, and plays a role in heat insulation of the first layer.
The utility model further provides that the furnace wall plate is positioned outside the lining, and the furnace wall weight is borne by the anchoring piece to seal the furnace chamber.
The utility model further provides that the vacuum cavity seals the cavity and is internally provided with the local supporting block, the external pressure gauge and the valve which are communicated with the cavity are arranged, the vacuum pumping equipment pumps the cavity into vacuum through the valve, the supporting block plays a role in isolating the surface of the cavity in the process of vacuumizing or installing, the surface lamination of the cavity is avoided, the vacuum heat insulation effect is reduced, and the pressure gauge indicates the vacuum degree of the cavity.
The beneficial effects are that: the cracking furnace wall structure is simple in structure and convenient to construct, and the vacuum wall body is additionally arranged on the outer side of the furnace wall plate to serve as a heat insulation layer in a sectional construction mode, so that the temperature of the furnace wall plate can be effectively reduced, further, the heat dissipation in the furnace is reduced, and energy sources can be effectively saved. Is suitable for newly-built ethylene cracking furnaces and in-service operation ethylene cracking furnaces. The structure can effectively reduce the temperature of the furnace wallboard, further reduce the heat dissipation in the furnace, and effectively save energy.
Drawings
FIG. 1 is a schematic diagram of the wall structure of the cracking furnace of the utility model.
In the figure, a 1-furnace lining, a 2-furnace wallboard, a 3-vacuum cavity, a 4-pressure gauge, a 5-valve and a 6-vacuumizing device are arranged.
Detailed Description
The wall structure of the cracking furnace is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a cracking furnace wall structure comprises a furnace lining 1, a furnace wallboard 2 and a vacuum cavity 3; the furnace lining is composed of refractory and heat-insulating pieces and is arranged on the inner side of the furnace body to play a role in heat insulation and heat preservation of the first layer; the furnace wallboard is a supporting structure of the furnace wall and plays roles in supporting and sealing a hearth; the vacuum cavity is a closed cavity, a local supporting block is arranged in the vacuum cavity, the outside of the vacuum cavity is connected with a pressure gauge and a valve, the outside of the valve is connected with a vacuumizing device, and the pressure gauge indicates the vacuum degree in the cavity.
The furnace lining with a certain thickness is fireproof, the heat-insulating component blocks the high temperature of the inner wall of the cracking furnace from being transferred to the temperature of the furnace wallboard, the furnace wallboard supports and seals the hearth structure, the vacuum cavity further reduces heat convection, the heat dissipation loss of the wall of the cracking furnace is reduced, and energy is saved.
While the utility model has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the utility model is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the utility model.
Claims (4)
1. A pyrolysis furnace wall structure, comprising:
a furnace lining (1) which is arranged on the inner side of the wall body and adopts a fireproof and heat-insulating material as a first heat-insulating layer;
a furnace wallboard (2) which is arranged outside the furnace lining (1) and is used as a supporting sealing layer;
the vacuum cavity (3) is arranged on the outer wall of the furnace wallboard (2) and is used as a second heat insulation layer.
2. The cracking furnace wall structure according to claim 1, wherein the vacuum chamber (3) is externally connected with a pressure gauge for measuring the vacuum degree in the vacuum chamber (3).
3. The wall structure of the cracking furnace according to claim 1 or 2, wherein the vacuum cavity (3) is externally connected with a vacuum pumping device for maintaining the vacuum degree in the vacuum cavity (3).
4. A wall structure of a pyrolysis furnace according to claim 3, wherein supporting blocks are arranged in the vacuum cavity (3), and the surface of the cavity is isolated in the process of vacuumizing or installing, so that the surface of the cavity is prevented from being attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222786046.3U CN219010219U (en) | 2022-10-21 | 2022-10-21 | Cracking furnace wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222786046.3U CN219010219U (en) | 2022-10-21 | 2022-10-21 | Cracking furnace wall structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219010219U true CN219010219U (en) | 2023-05-12 |
Family
ID=86239053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222786046.3U Active CN219010219U (en) | 2022-10-21 | 2022-10-21 | Cracking furnace wall structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219010219U (en) |
-
2022
- 2022-10-21 CN CN202222786046.3U patent/CN219010219U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205011866U (en) | Low pressure diffusion furnace | |
| CN101957134A (en) | Method for utilizing residual heat of tunnel furnace for sintering perforated bricks from by using coal gangue | |
| CN219010219U (en) | Cracking furnace wall structure | |
| CN105698231A (en) | Novel energy-saving environment-friendly stove | |
| CN211420051U (en) | Energy-saving coke oven top | |
| CN209778737U (en) | Coke oven combustion chamber furnace end insulation construction | |
| CN201981294U (en) | Insulating layer structure of furnace body of polysilicon crucible sintering furnace | |
| CN201269689Y (en) | Atmosphere sintering furnace | |
| CN215799306U (en) | Double-layer soft sealing structure of coke oven door | |
| CN210855978U (en) | Energy-saving coke oven coal charging hole | |
| CN212457906U (en) | Annealing furnace lining for reducing atmosphere | |
| CN107674689A (en) | A kind of coke oven door cigarette sealing material and its encapsulating method | |
| CN201325977Y (en) | Energy-saving heat treatment pit furnace | |
| CN202829938U (en) | Wall sealing device provided with alumina silicate fiber insulation board and used for regenerative chamber | |
| CN111795574A (en) | Firebrick fritting furnace | |
| CN112876101A (en) | Vacuum glass high-temperature exhaust packaging equipment and packaging method | |
| CN220056640U (en) | Foam glass foaming kiln for ceramic fiber heat-insulating material | |
| CN214735553U (en) | Experimental device for continuous schizolysis of microwave organic matter | |
| CN110724539A (en) | Energy-saving coke oven top | |
| CN216205204U (en) | Gas heating type aluminum alloy heat preservation stove | |
| CN219995866U (en) | Novel sintering equipment of positive electrode material of sodium ion battery | |
| CN220285054U (en) | Hydrophobic silica aerogel heat insulation board | |
| CN219156809U (en) | Positioning cone type energy-saving environment-friendly coal charging hole cover | |
| CN220169980U (en) | Secondary air inlet type kiln | |
| CN218989328U (en) | Furnace end sealing chamber of hot galvanizing annealing furnace set matched with hydrogen recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |