CN201417072Y - Combustion-gas furnace in coal injection of blast furnace - Google Patents
Combustion-gas furnace in coal injection of blast furnace Download PDFInfo
- Publication number
- CN201417072Y CN201417072Y CN2009201082291U CN200920108229U CN201417072Y CN 201417072 Y CN201417072 Y CN 201417072Y CN 2009201082291 U CN2009201082291 U CN 2009201082291U CN 200920108229 U CN200920108229 U CN 200920108229U CN 201417072 Y CN201417072 Y CN 201417072Y
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- CN
- China
- Prior art keywords
- flue gas
- coal injection
- pulverized coal
- gas stove
- heater
- 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.)
- Expired - Fee Related
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Abstract
A combustion-gas furnace in coal injection of a blast furnace comprises a furnace body with one end connected with a combustion chamber and the other end connected with a fuel gas outlet. A coal gas valve and an air valve are arranged in the combustion chamber; the coal gas valve is connected with a gas pipeline; the air valve is connected with an air line; a burner is arranged in the combustion chamber; and an air heating furnace waste flue gas inlet is formed on the furnace body. By adopting the combustion-gas furnace, waste gas of the blast furnace and an air heating furnace can be used forcoal dust dehydration and desiccation in a coal dust injection system of the blast furnace in the metallurgy industry.
Description
Technical field
The utility model relates to a kind of flue gas stove, particularly a kind of pulverized coal injection flue gas stove.
Background technology
In present industrial production thermal technology, be used to provide the equipment of air to be mainly the flue gas stove with uniform temperature.Promptly the high-temperature flue gas that produces with the flue gas stove heats cold air, produces hot-air, with the coal dust drying and dehydrating of the pulverized coal injection powder system that is used for metallurgy industry.But flue gas stove commonly used in the prior art is a double-layer sleeve structure, the equipment investment height, and service life is short, and the thermal efficiency is lower.The ignition temperature of stove is too low, and dry coal dust is insufficient.
Summary of the invention
The utility model provides a kind of pulverized coal injection flue gas stove, and short service life to solve the flue gas stove that exists in the above-mentioned background technology, the thermal efficiency is lower, the technical problem that ignition temperature is low.
A kind of pulverized coal injection flue gas stove, wherein, comprise a body of heater, one end connects air inlet pipe, and the other end connects exhanst gas outlet, is provided with gas valve and air valve in this air inlet pipe, this gas valve connects gas piping, this air valve connects air duct, is provided with burner in this air inlet pipe, also is provided with the useless smoke inlet of hot-blast stove on this body of heater.
Also be provided with manhole on this body of heater.
This body of heater is the cylindrical horizontal structure.
Comprise the combustion chamber and the wind mixed chamber that are connected in this body of heater, the useless smoke inlet of this hot-blast stove is located at this wind mixed chamber.
This air duct connects air blast.
This burner side is provided with steady fiery device.
This body of heater outside is the steel plate of 10-16 millimeter.
This furnace lining is the refractory material composite construction.
The outermost layer of this refractory material composite construction is the lightweight refracrory sprayed coating, is the cotton thermal insulation layer of high aluminum fiber then, is the light fire brick thermal insulation layer then, is special-shaped high-alumina brick working lining at last.
This abnormal shape high-alumina brick is for having double buckle.
Pulverized coal injection flue gas stove of the present utility model can significantly improve the sealing and the service life of combustion furnace, and use safety improves the thermal efficiency.
Description of drawings
Fig. 1 is the structural representation of pulverized coal injection flue gas stove of the present utility model;
Fig. 2 is a furnace lining section of structure of the present utility model.
Description of reference numerals
The 1-gas valve; The 2-burner; The 3-body of heater; The 4-air valve; The 5-air blast; The 6-exhanst gas outlet; The 7-hot-blast stove smoke inlet that gives up; The 8-manhole; The 9-spray paint; 10-high aluminum fiber brick; The 11-light weight fireclay brick; The special-shaped high-alumina brick of 12-.
The specific embodiment
For structure of the present utility model and characteristics can be understood better, below will and be elaborated in conjunction with the accompanying drawings for embodiment.
Fig. 1 is the structural representation of pulverized coal injection flue gas stove of the present utility model, and as shown in Figure 1, pulverized coal injection flue gas stove of the present utility model comprises the body of heater 3 of a cylindrical horizontal, and body of heater 3 inside are the cell-type structure, comprise the combustion chamber and the wind mixed chamber that are connected.One end of combustion chamber connects air inlet pipe.Be provided with gas valve 1 and air valve 4 in this air inlet pipe.Gas valve 1 connects gas piping, and air valve 4 connects an end of air duct.This air duct other end connects air blast 5.By air blast 5 air is blown in the air duct, enters air inlet pipe by air valve 4 then, and mix in air inlet pipe by the blast furnace gas that gas valve 1 enters from gas piping, mist enters in the combustion chamber of body of heater 3 by air inlet pipe.Be provided with burner 2 in the air inlet pipe, by burner 2 mist lighted, in the combustion chamber internal combustion.Burner 2 sides are provided with steady fiery device, can make blast furnace gas smooth combustion, guarantee the blast furnace gas combustion completion.
The wind mixed chamber of body of heater 3 is provided with the useless smoke inlet 7 of hot-blast stove, and the low-temperature flue gas that blast funnace hot blast stove produces enters wind mixed chamber by the useless smoke inlet 7 of hot-blast stove.The high-temperature flue gas that produces after the internal combustion of combustion chamber also enters in the wind mixed chamber, fully mixes in wind mixed chamber with low-temperature flue gas.Mist reaches the exhanst gas outlet 6 that is sent to body of heater 3 other ends behind the design temperature, enters coal pulverizer by exhanst gas outlet 6 and is used for the coal dust drying.Also be provided with manhole 8 on the body of heater 3, manhole 8 has seal cover, opens can enter in the body of heater 3 behind the seal cover and overhauls.
Body of heater 3 outsides are the steel plate of 10-16mm, are provided with liner in the steel plate, and this liner is the refractory material composite construction.As shown in Figure 2, totally four layers of the refractory material composite constructions of liner: outermost layer is 9 layers of lightweight refracrory spray paints, be high aluminum fiber brick 10 thermal insulation layers then, being light weight fireclay brick 11 thermal insulation layers then, is special-shaped high-alumina brick 12 working linings at last, all has double buckle on every block of special-shaped high-alumina brick 12, fasten mutually by double buckle, make between the special-shaped high-alumina brick 12 and combine closely, make the working lining structure of arch more stable, increase service life.
Pulverized coal injection flue gas furnace structure of the present utility model, sealing and the service life that can significantly improve the flue gas stove, converter life can reach 5～8 years; And be provided with steady fiery device in combustion flame the place ahead, can guarantee the blast furnace gas safe combustion, use is safer; The useless flue gas of blast funnace hot blast stove feeds in the flue gas stove, has improved the thermal efficiency and security of system.
More than be illustrative to description of the present utility model; and it is nonrestrictive; those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall in the protection domain of the present utility model all.
Claims (10)
1, a kind of pulverized coal injection flue gas stove, it is characterized in that, comprise a body of heater, one end connects air inlet pipe, and the other end connects exhanst gas outlet, is provided with gas valve and air valve in this air inlet pipe, this gas valve connects gas piping, this air valve connects air duct, is provided with burner in this air inlet pipe, also is provided with the useless smoke inlet of hot-blast stove on this body of heater.
2, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, also is provided with manhole on this body of heater.
3, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, this body of heater is the cylindrical horizontal structure.
4, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, comprises the combustion chamber and the wind mixed chamber that are connected in this body of heater, and the useless smoke inlet of this hot-blast stove is located at this wind mixed chamber.
5, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, this air duct connects air blast.
6, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, this burner side is provided with steady fiery device.
7, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, this body of heater outside is the steel plate of 10-16 millimeter.
8, pulverized coal injection flue gas stove as claimed in claim 1 is characterized in that, this furnace lining is the refractory material composite construction.
9, pulverized coal injection flue gas stove as claimed in claim 8, it is characterized in that the outermost layer of this refractory material composite construction is the lightweight refracrory sprayed coating, is the cotton thermal insulation layer of high aluminum fiber then, being the light fire brick thermal insulation layer then, is special-shaped high-alumina brick working lining at last.
10, pulverized coal injection flue gas stove as claimed in claim 9 is characterized in that, this abnormal shape high-alumina brick is for having double buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201082291U CN201417072Y (en) | 2009-05-18 | 2009-05-18 | Combustion-gas furnace in coal injection of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201082291U CN201417072Y (en) | 2009-05-18 | 2009-05-18 | Combustion-gas furnace in coal injection of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201417072Y true CN201417072Y (en) | 2010-03-03 |
Family
ID=41793495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201082291U Expired - Fee Related CN201417072Y (en) | 2009-05-18 | 2009-05-18 | Combustion-gas furnace in coal injection of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201417072Y (en) |
-
2009
- 2009-05-18 CN CN2009201082291U patent/CN201417072Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20130518 |