CN1858492A - Multiple fire hole flame-free ceramic burner - Google Patents
Multiple fire hole flame-free ceramic burner Download PDFInfo
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- CN1858492A CN1858492A CNA2005100186406A CN200510018640A CN1858492A CN 1858492 A CN1858492 A CN 1858492A CN A2005100186406 A CNA2005100186406 A CN A2005100186406A CN 200510018640 A CN200510018640 A CN 200510018640A CN 1858492 A CN1858492 A CN 1858492A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The multiple fire hole flame-free ceramic burners is used in flameless combustion industrial furnace and kiln, especially hot blast stove for iron making blast furnace. The multiple fire hole flame-free ceramic burner has two outer ring gas channels. After air through the air inlet and gas through the gas inlet enter the air preheating ring channel and the gas ring channel, gas and air are preheated in between two ring channels before jetting to the mixer for mixing and jetting through the combustion nozzle to combust. The gas ring channel has guide bricks for homogeneous distribution of gas. The present invention has unique structure, small size and great power, and is suitable for various kinds of hot blast stove with heat accumulator.
Description
Technical field
The invention belongs to the ceramic burner technical field of industrial furnace, in particular for the aphlogistic ceramic burner technical field of blast furnace top combustion stove.
Background technology
Top combustion stove is a kind of novel furnace type structure, since the sixties in last century, has just begun to be subjected to various countries metallargist's attention and has carried out extensive studies subsequently; At present, top combustion stove has been considered to the developing direction of hot-blast stove technology.Because top combustion stove does not have the combustion chamber of the ad hoc burning that gives gas, the tall and big combustion chamber of its furnace roof space and external combustion stove and internal combustion stove is compared much smaller, in so little space, make the huge coal gas of quantity realize completing combustion, must be equipped with the very big flameless combustion apparatus of combustion intensity.
Chinese patent literature CN85100733 disclosed " multi-fire-hole circular burner and top combustion stove ", the basic structure of its burner is that a gaseous mixture ring casing is arranged, the equally distributed fire hole of one circle is arranged above ring casing, two gas pipes are connected outside hot-blast stove with two combustion-aid air pipes respectively, coal gas and combustion air obtain mixing at this, and two mixture pipes link to each other with the burner ring casing.To be coal gas promptly take fire in mixing circuit the critical defect of the burner of this structure, heavy damage the stability of burning.
Chinese patent 00114572X disclosed " large-power flame-free ceramic combustor ", the annular air road and the ring gas road that are arranged in the furnace wall have been adopted, some tap holes are wherein arranged, tap hole is by having the arm of cone angle, arm links to each other with the mixing road by air chamber, mixes the road employing and has the export structure of different air-flow emission directions.This ceramic burner structure is very complicated, and especially circuit etc. has adopted metalwork, damages easily, use a period of time after casing temperature begin to raise, so the hot-blast stove life-span is short.In fact this scheme should inreal at last ceramic burner.
Top-combustion hot blast stove ceramic burner such as Fig. 1 that the Ka Lu King Company that China recent years is introduced from the former Soviet Union designs, existing several blast funnace hot blast stoves adopt.This burner also is to adopt annular air road and ring gas road are set in furnace wall, in a row is evenly equipped with several spray orifices on the furnace wall between coal gas circuit and air circuit and the combustion chamber, and coal gas and air spray the back in bags mixed combustion from spray orifice.In order to guarantee the efficiency of combustion of fuel, realize the flameless combustion of fuel, spray orifice all designs and has a certain degree, and fuel and air form swirling motion from spray orifice ejection back in the combustion chamber.Because the existence of eddy flow, air-flow form the swirling recirculation flow district in the regenerator space, thereby influence the even distribution of air-flow in regenerator.Very low or for negative value at the center of recirculating zone (being in the regenerator center) flue gas flow rate, and in the periphery in swirling recirculation flow district, air velocity is very high, can influence the heat exchange effect of regenerator like this.
Summary of the invention
At above-mentioned deficiency of the prior art, the purpose of this invention is to provide a kind of multiple fire hole flame-free ceramic burner, it is simple in structure, reasonable in design, can effectively eliminate the number of drawbacks of said burner, can realize real flameless combustion, reach high temperature, the longevity and efficient of top combustion stove, and can effectively improve the life-span of the thermal efficiency and prolongation hot-blast stove heat storage.
The object of the present invention is achieved like this: be provided with air circuit that is connected with air intake and the coal gas circuit that is connected with gas entry in the furnace wall sidewall of this multiple fire hole flame-free ceramic burner, a plurality of ports are evenly distributed on around the cavity of combustion chamber; Air circuit and coal gas circuit be provided with a plurality of on cross section in pairs that distribute and the same number of air spray orifice and coal gas spray orifice port, the other end of one an air spray orifice and a coal gas spray orifice is connected with a leading portion that mixes the road, the back segment outlet that mixes the road is port, also is provided with in the coal gas circuit and makes the equally distributed water conservancy diversion brick of coal gas.Described mixing road is prismatic mixer along its leading portion of radiation direction at burner center, and the coal gas spray orifice outlet design of its back segment has the structure of boss.The angle of cut of port center line of discharge and its export center and the burner line of centres is the 0-45 degree.The air circuit is arranged on the coal gas circuit.The coal gas spray orifice enters the mixing road with the direction parallel with the port center line, and the air spray orifice mixes to enter with direction that the port center line is spent at an angle of 90.
Novel structure of the present invention, reasonable in design, obvious technical effects not only can overcome the defective of prior art, makes easy construction, low cost of manufacture, long service life simultaneously.The coal gas and the air preheat circuit of the inner special construction of this burner make this burner on air have heat accumulation function, and have preheated air and coal gas function in the burning phase.From test case, this burner has efficiency of combustion height, characteristics that the vault chamber temperature is not high, has effectively improved the vault working condition, helps improving hot-blast stove service life simultaneously.Burner structure uniqueness of the present invention is applicable to various types of top combustion stoves.
Description of drawings
Accompanying drawing 1 is card Shandong goldentop burning type hot-air furnace burner;
Accompanying drawing 2 is one embodiment of the invention structural representation;
Accompanying drawing 3 is a broken circle part enlarged diagram in the accompanying drawing 2;
Accompanying drawing 4 is a port plan cross-section structural representation in the accompanying drawing 2.
Accompanying drawing acceptance of the bid keep the score state as follows: 1---air intake; 2---gas entry; 3---the air circuit; 4---coal gas circuit 5---air spray orifice; 6---the coal gas spray orifice; 7---mix the road; 8---port; 9---the combustion chamber cavity; 10---the water conservancy diversion brick.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.As shown in Figure 2, burner outer wall is provided with two gas circuits 3,4 up and down, and wherein air circuit 3 is positioned on the coal gas circuit 4, wherein, also is furnished with the water conservancy diversion brick so that coal gas distributes more even in the coal gas circuit.Coal gas and combustion air in its circuit 3,4 separately after preheating, enter the leading portion that mixes road 7 by each spray- hole 5,6, coal gas spray orifice 6 enters with the direction parallel with port 8 center lines and mixes road 7, and air spray orifice 5 mixes 7 to enter with direction that port 8 center lines are spent at an angle of 90.6 designs of coal gas spray orifice have the structure of boss, to prevent the coal gas tempering.Under the pressure effect that coal gas ejection air-flow and the air-flow of air own are had, both carry out enforceable abundant premixed in mixing the road, spray into combustion chamber cavity 9 by port 8 then and burn, the flue gas that forms from top to bottom flows to into combustion space accelerated combustion.Because the above-mentioned special construction of this burner, eliminated the recirculating zone on regenerator top, the high-temperature flue gas cross section flow velocity of port 8 ejections is even, can make the heat storage of regenerator obtain evenly heating fully, thereby effectively improve wind-warm syndrome and efficiency of combustion, guaranteed the stable air-supply of hot-blast stove to a great extent.The burning load adjustable range of this multiple fire hole flame-free ceramic burner is big, furnace pressure is stable when burning, and is difficult for tempering and burning fully, can realize completing combustion under minimum coefficient of excess air.Simultaneously, the special construction of this burner makes it have self-preheating and refrigerating function: cryogen (air, coal gas) has reduced the temperature of refractory masonry, the service life that can effectively improve burner on the one hand; On the other hand, the high temperature masonry carries out the secondary preheating to cryogen, can effectively improve the theoretical temperature combustion of coal gas under the same conditions.Practical test can improve coal gas, combustion air temperature more than 150～200 ℃ after deliberation.In addition, this burner does not have metalwork, and is high temperature resistant, and the life-span is long, can effectively solve the phenomenon that near the rubescent and burner of the stove skin burner falls brick easily.
Claims (5)
1, a kind of multiple fire hole flame-free ceramic burner, be provided with air circuit (3) that is connected with air intake (1) and the coal gas circuit (4) that is connected with gas entry (2) in the furnace wall sidewall, a plurality of ports (8) are evenly distributed on combustion chamber cavity (9) sidewall all around, it is characterized in that: air circuit (3) and coal gas circuit (4) be provided with a plurality of on cross section in pairs that distribute and the same number of air spray orifice (5) and coal gas spray orifice (6) port (8), the other end of one an air spray orifice (5) and a coal gas spray orifice (6) is connected with a leading portion that mixes road (7), the back segment outlet that mixes road (7) is port (8), also is provided with in coal gas circuit (4) and makes the equally distributed water conservancy diversion brick of coal gas (10).
2, burner according to claim 1 is characterized in that: the outlet design of coal gas spray orifice (6) has the structure of boss.
3, burner according to claim 1 is characterized in that: the angle of cut of port (8) center line of discharge and its export center and the burner line of centres is the 0-45 degree.
4, burner according to claim 1 is characterized in that: air circuit (3) is arranged on the coal gas circuit (4).
5, burner according to claim 1, it is characterized in that: coal gas spray orifice (6) enters with the direction parallel with port (8) center line and mixes road (7), and air spray orifice (5) mixes (7) to enter with direction that port (8) center line is spent at an angle of 90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510018640A CN100578085C (en) | 2005-04-30 | 2005-04-30 | Multiple fire hole flame-free ceramic burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510018640A CN100578085C (en) | 2005-04-30 | 2005-04-30 | Multiple fire hole flame-free ceramic burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1858492A true CN1858492A (en) | 2006-11-08 |
| CN100578085C CN100578085C (en) | 2010-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510018640A Expired - Fee Related CN100578085C (en) | 2005-04-30 | 2005-04-30 | Multiple fire hole flame-free ceramic burner |
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| Country | Link |
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| CN (1) | CN100578085C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793396A (en) * | 2010-03-15 | 2010-08-04 | 郑州豫兴耐火材料有限公司 | Combustion device for upper spraying, combustion, exhumation and outflow of premixed annular airflow |
| CN102494343A (en) * | 2011-12-22 | 2012-06-13 | 陈维汉 | Combustion device for rotational flow mixed combustion by spraying air above uniformly distributed gas jets in loop |
| CN103866071B (en) * | 2014-03-14 | 2015-10-28 | 武汉科技大学 | Multilayer circuit multiple fire hole flame-free ceramic burner and using method thereof |
| CN111964056A (en) * | 2020-08-31 | 2020-11-20 | 中冶赛迪工程技术股份有限公司 | Ceramic burner and top combustion hot blast stove |
-
2005
- 2005-04-30 CN CN200510018640A patent/CN100578085C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793396A (en) * | 2010-03-15 | 2010-08-04 | 郑州豫兴耐火材料有限公司 | Combustion device for upper spraying, combustion, exhumation and outflow of premixed annular airflow |
| CN102494343A (en) * | 2011-12-22 | 2012-06-13 | 陈维汉 | Combustion device for rotational flow mixed combustion by spraying air above uniformly distributed gas jets in loop |
| CN103866071B (en) * | 2014-03-14 | 2015-10-28 | 武汉科技大学 | Multilayer circuit multiple fire hole flame-free ceramic burner and using method thereof |
| CN111964056A (en) * | 2020-08-31 | 2020-11-20 | 中冶赛迪工程技术股份有限公司 | Ceramic burner and top combustion hot blast stove |
| CN111964056B (en) * | 2020-08-31 | 2024-05-14 | 中冶赛迪工程技术股份有限公司 | Ceramic burner and top combustion type hot blast stove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100578085C (en) | 2010-01-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20190430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |