CN201032343Y - Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor - Google Patents
Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor Download PDFInfo
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- CN201032343Y CN201032343Y CNU2007200894796U CN200720089479U CN201032343Y CN 201032343 Y CN201032343 Y CN 201032343Y CN U2007200894796 U CNU2007200894796 U CN U2007200894796U CN 200720089479 U CN200720089479 U CN 200720089479U CN 201032343 Y CN201032343 Y CN 201032343Y
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Abstract
The utility model relates to a round top combustion stove around which burners with vertical and upward ejection are arranged, which effectively solves problems that the temperature and speed of combustion airflow of the stove do not distribute uniformly and whole heat transferring effect is poor. Structure of the utility model is that the lower part of a stove body is provided with a flue hole; a regenerator is arranged inside a stove bottom, a fire grate and the stove body. The burners are arranged between the upper part of the stove body and the stove top on which a heating air exit; a coal gas preheating loop is arranged inside a wall body of the burners, and a preheating loop of combustion air is arranged inside an expansion body at the upper part of the coal gas preheating loop. The upper part of the coal gas preheating loop is provided with a coal gas exit and a spout at the top thereof; the wall body of the burners is provided with a coal gas entrance communicated with a combustion air exit; the upper part of the combustion air exit is provided with an air spout. The utility model has unique and novel structure and effectively solves key problems of airflow mixing, airflow distribution, fuel gas preheating, etc., during combustion process, thereby having considerable economic and social benefits.
Description
One, technical field
The utility model relates to burner, is meant a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout especially.
Two, background technology
Hot-blast stove is the important auxiliary equipment of blast furnace ironmaking engineering, it is the device of the cycling service of a kind of heating at intermittence and cooling, the quality of its performance directly has influence on the normal operation of self and blast furnace, service efficiency and service life, in hot-blast stove, use maximum version nothing more than internal combustion type at present, 3 kinds of external-burning and top ignitions, because it is big that top combustion stove has combustion intensity, flame is apart from weak point, advantages such as structure is simple relatively, obtained significant progress in recent years, be widely applied in the hot blast feeding of blast furnace, but, the place that much is worth carrying out technological innovation and research and development is still arranged from technology maturity analysis.Existing top combustion stove is provided with the top precombustion chamber, adopt coal gas to enter and enter combustion chambers burn after eddy flow mixes therein with tangential introduction of air, because existing, eddy flow make the middle part, combustion chamber that big Modelling of Flow with Recirculation be arranged, make the air-flow radial distribution extremely inhomogeneous, greatly influence combustion process, cause flue gas stream can not have even velocity and Temperature Distribution, thereby influence whole furnace heat transfer effect.If adopt the hybrid mode of acylic motion, can occur mixing not good again and problem flame instability.In addition, because precombustion chamber is to be in different temperature ranges in combustion process and air-supply process, there is bigger alternating thermal stress; And be placed on the high temperature vault, be easy to occur structural issue.Therefore, carrying out bigger architecture advances is an imperative job.
Three, utility model content
At above-mentioned situation, the purpose of the utility model just provides a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout, can effectively solve and overcome existing top combustion stove combustion-gas flow temperature and VELOCITY DISTRIBUTION inequality, problems such as whole heat-transfer effect difference and unreasonable structure, the technical scheme of its solution is to include stove (arch) top, the combustion chamber, ceramic burner and body of heater, floss hole and furnace bottom are arranged at the body of heater bottom, by in the body of heater on floss hole top fire grate is housed, in the body of heater is regenerator, between upper of furnace body and the furnace roof ceramic burner is arranged, and place the bottom of combustion chamber, hot-blast outlet is arranged on the furnace roof, vertical gas preheating circuit is arranged in the body of wall of ceramic burner, vertical combustion air preheating circuit is arranged in its upper expansion body, the vertical gas exit and the spout at top thereof are arranged at vertical gas preheating circuit top, the gas entry that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, have vertical combustion air preheating circuit to be connected with combustion air inlet and combustion air outlet on the ceramic burner body of wall on gas entry top, air port is arranged at air outlet slit top.The utility model structure is unique and novel, solve effectively and dexterously that air-flow mixes, air-flow distributes, with the key issue of combustion process such as smoke pre-heating, realize flame stabilization, improved combustion intensity, improve heat-transfer effect, reach and improve Load Regulation function etc., and then fuel saving, saving investment, reduction EGT and discharge capacity, effectively prolong the service life of hot-blast stove, its economic and social benefit is huge.
Four, description of drawings
Fig. 1 is a structural profile front view of the present utility model.
Fig. 2 is a ceramic burner structural profile front view of the present utility model.
Fig. 3 is an A-A cross sectional plan view among Fig. 2 of the present utility model.
Five, the specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
By Fig. 1, shown in Figure 2, the utility model includes furnace roof 12, combustion chamber 11, ceramic burner 8 and body of heater 2, floss hole 3 and furnace bottom 1 are arranged at body of heater 2 bottoms, by in the body of heater on floss hole top grate 6 is housed, in the body of heater is regenerator 7, ceramic burner 8 is arranged between upper of furnace body and the furnace roof, and place the bottom of combustion chamber 11, hot-blast outlet 9 is arranged on the furnace roof 12, ceramic burner 8 is that vertical gas preheating circuit 14 is arranged in the burner body of wall 15, vertical combustion air preheating circuit 17 is arranged in its upper expansion body, the spout 20 at vertical gas exit 21 and top thereof is arranged at vertical gas preheating circuit top, the gas entry 13 that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, have vertical combustion air preheating circuit 17 to be connected with combustion air inlet 16 and combustion air outlet 18 on the ceramic burner body of wall on gas entry top, air port 19 is arranged at air outlet slit top.For easy to maintenance and assurance result of use, top equipment manhole 10 is arranged on the furnace roof 12, equipment manhole 4 is arranged at body of heater 2 bottoms, is used to into people's maintenance, observation etc., and refractory masses 5 is arranged in the body of heater 2.
The inlet of the gas preheating circuit 14 that said ceramic burner is vertical and combustion-supporting chamber's air preheat circuit 17 is the tangential access port; The air port 19 of ceramic burner and gas port 20 are for vertically upward, its nozzle is rectangle or circle, coal gas, the air of ejection carry out high temperature preheating through high temperature reflux to coal gas and air before mixing, improve ignition temperature, furnace roof 12 adopts the catenary vault, ceramic burner places the base portion of vault, is supported on body of heater 2 and the ceramic burner body of wall 15.Be on vertical gas preheating circuit and the vertical air preheat circuit to intersect and be provided with a plurality of outlets (collection) and manage.
By as can be seen above-mentioned, the utility model has been owing to adopted vertical coal gas and air-breathing circuit, and is subjected to the preheating of flue gas of turning back, thereby improves burning condition, improve combustion intensity, the uniform distribution of its thermal current of turning back can effectively improve the utilization ratio of heat storage.Hot fluid presents the even distribution characteristics of Turbulence Flow in the pipe in the hot-blast stove of the present utility model, be beneficial to very much heating to the bottom heat storage, and existing hot-blast stove is quite different, in the middle of thermal current distributes and to be low (even reverse flow) and the high flow performance in both sides causes the heat storage middle part to can not get abundant heating.
So the utility model obviously is different from the characteristics of existing ceramic burner and exists:
1, coal gas, air vertically upward spray, and by means of high temperature gases recirculating it are carried out in hot-blast stove High temperature preheating, the staggered injection of warp mixes cmpletely it and burns, and reaches sufficient combustion, ignition temperature Height, the purpose that the heat load adjustment scope is big;
2, coal gas, air vertically upward spray after-combustion, turn back under the effect of hot-blast stove vault, the downward thermal current that formation temperature and speed all are evenly distributed then enters the top of hot-blast stove heat storage, thereby heat storage is heated evenly, can reaches the high and stable requirement of hot blast of hot blast temperature;
3, the air inlet pipe of coal gas circuit and air circuit is tangential the access, makes to arrange evenly that separately staggered tens outlets (collection) Guan Zhongneng obtains mean error less than ± 5% VELOCITY DISTRIBUTION, mixes thereby improve circumferential air-flow, improves the integral combustion effect;
4, adopt the catenary vault, force structure is good, and vault is little, long service life;
5, burner is arranged on the base portion of vault, is supported on the furnace shell and big-wall, and is not subjected to the combustion chamber heat radiation effect can keep less variations in temperature, effectively increases the service life;
6, supporting seat and arch angular distance are far away, and thermal-flame can't move down, and make this supporting seat temperature be in normal tolerance range;
7, because the utility model has been realized overall uniform burning and diabatic process, the heat storage of the used hot-blast stove of the comparable co-content blast furnace of the height of its heat storage can reduce by 20%, has saved investment effectively.
In a word, the utility model is the inventive improvements to existing top combustion stove structure, makes each functional structure feature and the layout science that becomes more be convenient to more promote the use of with reasonable, contains huge economic and social benefit.
Claims (6)
1. dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout, include furnace roof (12), combustion chamber (11), ceramic burner (8) and body of heater (2), it is characterized in that, floss hole (3) and furnace bottom (1) are arranged at body of heater (2) bottom, by in the body of heater on floss hole top grate (6) is housed, in the body of heater is regenerator (7), ceramic burner (8) is arranged between upper of furnace body and the furnace roof, and place the bottom of combustion chamber (11), hot-blast outlet (9) is arranged on the furnace roof (12), ceramic burner (8) is that vertical gas preheating circuit (14) is arranged in the burner body of wall (15), vertical combustion air preheating circuit (17) is arranged in its upper expansion body, the spout (20) at vertical gas exit (21) and top thereof is arranged at vertical gas preheating circuit top, the gas entry (13) that is communicated with vertical gas preheating circuit is arranged on the ceramic burner body of wall, have vertical combustion air preheating circuit (17) to be connected with combustion air inlet (16) and combustion air outlet (18) on the ceramic burner body of wall on gas entry top, air port (19) is arranged at air outlet slit top.
2. a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that, top equipment manhole (10) is arranged on the said furnace roof (12), and equipment manhole (4) is arranged at body of heater (2) bottom, and refractory masses (5) is arranged in the body of heater (2).
3. a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that the gas preheating circuit (14) that said ceramic burner is vertical and the inlet of combustion-supporting chamber's air preheat circuit (17) are the tangent-type import.
4. a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that, air port of said ceramic burner (19) and gas port (20) are for vertically upward, and its nozzle is rectangle or circle.
5. a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1, it is characterized in that, said furnace roof (12) adopts the catenary vault, and ceramic burner places the base portion of vault, is supported on body of heater (2) and the ceramic burner body of wall (15).
6. a kind of dome burning type hot-air furnace that has the vertical up-spray burner that is circular layout according to claim 1 is characterized in that, is to intersect on said vertical gas preheating circuit and the vertical air preheat circuit to be provided with a plurality of outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200894796U CN201032343Y (en) | 2007-02-14 | 2007-02-14 | Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200894796U CN201032343Y (en) | 2007-02-14 | 2007-02-14 | Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201032343Y true CN201032343Y (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200894796U Expired - Fee Related CN201032343Y (en) | 2007-02-14 | 2007-02-14 | Spherical top burning hot-blast stove with ring disposal vertical upward spraying combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032343Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048795A1 (en) * | 2008-10-27 | 2010-05-06 | 郑州豫兴耐火材料有限公司 | A top-combustion hot blast stove |
| CN101024859B (en) * | 2007-04-25 | 2010-05-19 | 郑州豫兴耐火材料有限公司 | Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner |
| CN102435060A (en) * | 2011-09-15 | 2012-05-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and process for drying/decomposing solid materials |
-
2007
- 2007-02-14 CN CNU2007200894796U patent/CN201032343Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024859B (en) * | 2007-04-25 | 2010-05-19 | 郑州豫兴耐火材料有限公司 | Ball-shape top-burning type hot-air furnace with annular-arranged vertical up-spray burner |
| WO2010048795A1 (en) * | 2008-10-27 | 2010-05-06 | 郑州豫兴耐火材料有限公司 | A top-combustion hot blast stove |
| CN102435060A (en) * | 2011-09-15 | 2012-05-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and process for drying/decomposing solid materials |
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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: 20080305 Termination date: 20130214 |