CN202576468U - Bottom combustion type hot blast heater - Google Patents
Bottom combustion type hot blast heater Download PDFInfo
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- CN202576468U CN202576468U CN 201220186465 CN201220186465U CN202576468U CN 202576468 U CN202576468 U CN 202576468U CN 201220186465 CN201220186465 CN 201220186465 CN 201220186465 U CN201220186465 U CN 201220186465U CN 202576468 U CN202576468 U CN 202576468U
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Abstract
The utility model discloses a bottom combustion type hot blast heater, belongs to the field of a hot blast furnace, and aims to provide a bottom combustion type heat storage hot blast heater of which a combustion chamber is located on the lower part of a heat storage chamber. The bottom combustion type hot blast heater disclosed by the utility model comprises a furnace base, a furnace shell, a furnace wall, a combustor, a combustion opening, a cold air inlet, a hot air outlet, a waste gas outlet, the combustion chamber, the heat storage chamber, a vault and a furnace grill, and further comprises an air flow chamber, wherein the air flow chamber is located on the lower part of the vault and the air flow chamber is provided with the hot air outlet and the waste gas outlet; the heat storage chamber is located on the lower part of the air flow chamber and the lower end of the vault is connected with an external furnace body at the upper end of the heat storage chamber; the combustion chamber is located on the lower part of the heat storage chamber and the furnace grill is erected between the combustion chamber and the heat storage chamber; and the combustion chamber is provided with the combustion opening and the cold air inlet. The utility model mainly aims to provide the heat storage type hot blast heater which has the advantages of higher heat efficiency, better use performance, longer service life and more reasonable structure.
Description
Technical field
The utility model relates to the regenerative hot blast stove in a kind of metallurgical industry; More particularly; Relate to a kind of bottom burning type hotblast stove; Be applicable to blast furnace ironmaking and the used hotblast stove of fused reduction iron-smelting in the Iron industry, can also be used for other need be heated to the industrial technology field more than 1000 degrees centigrade with gaseous medium.
Background technology
Adopt the existing nearly bicentenary history of hotblast stove heating air blast in the blast furnace iron-making process, initial heating back wind-warm syndrome has only 149 degrees centigrade, and along with continuous advancement in technology, the highest wind-warm syndrome has reached 1300 degrees centigrade at present.Improve wind-warm syndrome and can significantly reduce coke ratio, practice thrift coke, improve furnace processor, can also make full use of low-calorie blast furnace gas, improve efficiency of energy utilization, reduce coal gas diffusion, save energy, protection environment.
Blast furnace is divided into three types of internal combustion types, external combustion type, top ignition with hotblast stove by present position, combustion chamber difference.What China's blast furnace generally adopted is Cowper stove, and few part large blast furnace adopts outside combustion stove, and top combustion stove has sophisticated Ka Lujin hotblast stove, and its use is also increasingly extensive.The combustion chamber of Cowper stove is positioned at a side of hotblast stove; Have that calorific loss is little, simple in structure, floor space is little and advantage such as reduced investment; But it is even inadequately that the accumulation of heat indoor air flow distributes, and the complicated and damage easily of curtain wall structure is difficult to adapt to long-term 1300 degrees centigrade high wind-warm syndrome requirements.The principal feature of outside combustion stove is that combustion chamber and regenerator are separated from each other; The combustion chamber is set separately, and the accumulation of heat indoor air flow of outside combustion stove distributes rationally, but its complex structure; Floor space is big; Investment cost is high, and the heat lost by radiation amount is big, and medium and small blast furnace generally should not adopt outside combustion stove.The characteristics of top combustion stove are that special combustion chamber is not set, and with the space segment of vault as the combustion chamber, overcome the drawback that gas well tilts brick, burns short circuit, obtain the high wind-warm syndrome more than 1200 degrees centigrade more easily.
Blast furnace of the prior art is with in the hotblast stove; The hot blast that produces all will change direction through vault and get into regenerator; Vault not only receives action of high temperature under the effect of high temperature gas flow; Also receive the strong wallop of high temperature gas flow, the hotblast stove vault in the running is easy to distortion with damaged, and then influences the work-ing life of hotblast stove and the ordinary production of blast furnace.Cowper stove and outside combustion stove complex structure, floor space is big, and investment cost is high, and the regenerator accumulation of heat is inhomogeneous.Top combustion stove has symplex structure, and temperature range distributes rationally, takes up an area of little; Advantages such as less investment; But the combustion space of its combustion chamber receives very big restriction, and the vault on its top, combustion chamber bearing bigger thermodynamic activity, and furnace roof and furnace lining are easy to damaged by hot gas flow.
Summary of the invention
The technical problem that utility model will solve
The utility model has overcome existing outer right formula hotblast stove and the Cowper stove vault predisposes to damage, floor space big, the regenerator accumulation of heat is uneven; And the combustion space of top combustion stove combustion chamber is limited; Vault and furnace lining are prone to by the technical deficiency of intensive high temperature gas flow destruction etc., the bottom burning type hotblast stove that provides a kind of combustion chamber to be positioned at the regenerator bottom.
Technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of bottom burning type hotblast stove of the utility model; Comprise furnace foundation, furnace shell, furnace wall, burner, burner port, cold air inlet, hot-blast outlet, waste gas outlet, combustion chamber, regenerator, vault, fire grate, also comprise airflow chamber, described airflow chamber is positioned at the bottom of vault; Described airflow chamber is provided with hot-blast outlet and waste gas outlet; Described regenerator is positioned at the bottom of airflow chamber, and described vault lower end is connected with the outside body of heater of regenerator upper end, and described combustion chamber is positioned at the bottom of regenerator; Set up fire grate between described combustion chamber and the regenerator, described combustion chamber is provided with burner port and cold air inlet.The combustion chamber is arranged on the bottom of regenerator, and the hot blast after the burning directly gets into regenerator through fire grate, and regenerator heats up rapidly, is heated evenly; The hot blast that comes out from the regenerator upper end has not had too big surging force, makes the suffered surging force of vault reduce greatly, and meanwhile, furnace roof only just receives high temperature action in latter stage and the air-supply that regenerator heats up period, and the vault Working environment obtains very big improvement; The combustion space of combustion chamber can be adjusted through the design that increases height or expansion xsect; The fire grate that sets up is in order to support the checker brick in the regenerator.
A nearlyer step ground, described regenerator upper inside wall is vertical, and its underpart inwall from top to bottom tilts gradually inwards, and the lower end of said regenerator is connected with upper end, fire grate outer rim furnace wall mutually, and lower end, said fire grate outer rim furnace wall is connected with the upper end, combustion chamber mutually.The design of furnace wall tilting is adopted in the bottom of regenerator, and the effect of supporting the inner checker brick of regenerator not only can equally with the fire grate that sets up be played in the furnace wall of inclination, and makes and combustion chamber nature transition, plays the effect that makes the regenerator thermally equivalent.
A nearlyer step ground, checker brick hole lattice are consistent in the Kong Geyu regenerator of described fire grate.Can guarantee that like this high temperature gas flow gets into regenerator smoothly.
A nearlyer step ground, the inclined angle alpha of described regenerator lower inner wall is 30 ° ~ 80 °.Can select suitable pitch angle to reach the purpose that supports checker brick according to the size of combustion chamber xsect.
Beneficial effect
The technical scheme that adopts the utility model to provide is compared with existing known technology, has following beneficial effect:
(1) a kind of bottom burning type hotblast stove of the utility model, the combustion chamber is positioned at the bottom of regenerator, the high temperature gas flow after the burning can directly get into regenerator, regenerator be heated evenly and heat-up rate rapid;
(2) a kind of bottom burning type hotblast stove of the utility model is separated with airflow chamber and regenerator between vault and the combustion chamber, and vault can not receive the intense impact of high temperature gas flow, and heighten work-ing life; The combustion chamber is positioned at the bottom of hotblast stove, and the design limit sexual factor of its combustion space is less, can enlarge the combustion space through the method that increases combustion chamber height and xsect;
(3) a kind of bottom burning type hotblast stove of the utility model, the furnace wall, bottom of regenerator adopt the tilting design, have the load-bearing effect, can and be erected at the fire grate of regenerator between the combustion chamber and bear the action of gravity from checker brick in the regenerator;
(4) a kind of bottom burning type hotblast stove of the utility model, checker brick hole lattice are consistent in the Kong Geyu regenerator of fire grate, make high temperature gas flow can get into regenerator smoothly;
(5) a kind of bottom burning type hotblast stove of the utility model, floor space is little, reduced investment, thermosteresis is little, and is simple in structure, and heating efficiency is high.
Description of drawings
Fig. 1 is the sectional view of a kind of bottom burning type hotblast stove of the utility model.
Label declaration in the synoptic diagram: 1-burner port; 2-cold air inlet; 3-hot-blast outlet; 4-combustion chamber; 5-regenerator; 6-airflow chamber; 7-vault; 8-fire grate; 9-waste gas outlet.
Embodiment
For further understanding the content of the utility model, the utility model is described in detail in conjunction with accompanying drawing.
In conjunction with Fig. 1, a kind of bottom burning type hotblast stove of the utility model is made up of furnace foundation, furnace shell, furnace wall, burner, burner port 1, cold air inlet 2, waste gas outlet 9, hot-blast outlet 3, combustion chamber 4, regenerator 5, airflow chamber 6, vault 7 and fire grate 8.
In a kind of bottom burning type hotblast stove of the utility model, described airflow chamber 6 is positioned at the bottom of vault 7, and airflow chamber 6 is provided with hot-blast outlet 3 and waste gas outlet 9; Described regenerator 5 is positioned at the bottom of airflow chamber 6; Regenerator 5 upper inside wall are vertical; Its underpart inwall from top to bottom tilts gradually inwards, and the inclined angle alpha of regenerator 5 lower inner wall is 30 ° ~ 80 °, and said vault 7 lower ends are connected with the outside body of heater of regenerator 5 upper ends; Described combustion chamber 4 is positioned at the bottom of regenerator 5; Set up fire grate 8 between combustion chamber 4 and the regenerator 5; Checker brick hole lattice are consistent in the Kong Geyu regenerator 5 of fire grate 8; The lower end of regenerator 5 is connected with upper end, fire grate 8 outer rim furnace walls mutually, and lower end, fire grate 8 outer rim furnace wall is connected with 4 upper ends, combustion chamber mutually, and combustion chamber 4 is provided with burner port 1 and cold air inlet 2.
Below in conjunction with embodiment the utility model is done further to describe.
In a kind of bottom burning type hotblast stove of present embodiment, described airflow chamber 6 is positioned at the bottom of vault 7, and airflow chamber 6 is provided with hot-blast outlet 3 and waste gas outlet 9; Described regenerator 5 is positioned at the bottom of airflow chamber 6, and regenerator 5 upper inside wall are vertical, and its underpart inwall from top to bottom tilts gradually inwards, and the inclined angle alpha of regenerator 5 lower inner wall is 30 °, and said vault 7 lower ends are connected with the outside body of heater of regenerator 5 upper ends; Described combustion chamber 4 is positioned at the bottom of regenerator 5; Set up fire grate 8 between combustion chamber 4 and the regenerator 5; Checker brick hole lattice are consistent in the Kong Geyu regenerator 5 of fire grate 8; The lower end of regenerator 5 is connected with upper end, fire grate 8 outer rim furnace walls mutually, and lower end, fire grate 8 outer rim furnace wall is connected with 4 upper ends, combustion chamber mutually, and combustion chamber 4 is provided with burner port 1 and cold air inlet 2.The manufacturing material of fire grate 8 adopts high temperature resistant, corrosion resistant fe-base superalloy.
The substruction of present embodiment is with embodiment 1, and difference is: the inclined angle alpha of regenerator 5 lower inner wall is 50 °, and the manufacturing material of fire grate 8 adopts high temperature resistant, corrosion resistant nickel base superalloy.
The substruction of present embodiment is with embodiment 1, and difference is: the inclined angle alpha of regenerator 5 lower inner wall is 80 °, and the manufacturing material of fire grate 8 adopts high temperature resistant, corrosiron.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in the accompanying drawing also is one of embodiment of the utility model, and practical structure is not limited thereto.So,, under the situation that does not break away from the utility model creation aim,, all should belong to the protection domain of utility model without creationary frame mode similar and the embodiment of designing with this technical scheme if those of ordinary skill in the art is enlightened by it.
Claims (4)
1. bottom burning type hotblast stove; Comprise furnace foundation, furnace shell, furnace wall, burner, burner port (1), cold air inlet (2), hot-blast outlet (3), waste gas outlet (9), combustion chamber (4), regenerator (5), vault (7) and fire grate (8); It is characterized in that: also comprise airflow chamber (6); Described airflow chamber (6) is positioned at the bottom of vault (7); Described airflow chamber (6) is provided with hot-blast outlet (3) and waste gas outlet (9); Described regenerator (5) is positioned at the bottom of airflow chamber (6), and described vault (7) lower end is connected with the outside body of heater of regenerator (5) upper end, and described combustion chamber (4) are positioned at the bottom of regenerator (5); Set up fire grate (8) between described combustion chamber (4) and the regenerator (5), described combustion chamber (4) are provided with burner port (1) and cold air inlet (2).
2. a kind of bottom burning type hotblast stove according to claim 1; It is characterized in that: described regenerator (5) upper inside wall is vertical; Its underpart inwall from top to bottom tilts gradually inwards; The lower end of said regenerator (5) is connected with upper end, fire grate (8) outer rim furnace wall mutually, and lower end, said fire grate (8) outer rim furnace wall is connected with combustion chamber (4) upper end mutually.
3. a kind of bottom burning type hotblast stove according to claim 1 and 2 is characterized in that: checker brick hole lattice are consistent in the Kong Geyu regenerator (5) of described fire grate (8).
4. a kind of bottom burning type hotblast stove according to claim 3 is characterized in that: the inclined angle alpha of described regenerator (5) lower inner wall is 30 ° ~ 80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186465 CN202576468U (en) | 2012-04-28 | 2012-04-28 | Bottom combustion type hot blast heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186465 CN202576468U (en) | 2012-04-28 | 2012-04-28 | Bottom combustion type hot blast heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202576468U true CN202576468U (en) | 2012-12-05 |
Family
ID=47245898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220186465 Expired - Fee Related CN202576468U (en) | 2012-04-28 | 2012-04-28 | Bottom combustion type hot blast heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202576468U (en) |
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2012
- 2012-04-28 CN CN 201220186465 patent/CN202576468U/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: 20121205 Termination date: 20130428 |