CN203333728U - Burning, mixing and baking integrated furnace and baking system applying integrated furnace - Google Patents
Burning, mixing and baking integrated furnace and baking system applying integrated furnace Download PDFInfo
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- CN203333728U CN203333728U CN2013202367232U CN201320236723U CN203333728U CN 203333728 U CN203333728 U CN 203333728U CN 2013202367232 U CN2013202367232 U CN 2013202367232U CN 201320236723 U CN201320236723 U CN 201320236723U CN 203333728 U CN203333728 U CN 203333728U
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Abstract
The utility model relates to a burning, mixing and baking integrated furnace and a baking system applying the integrated furnace, wherein the integrated furnace comprises a feed port, a reducing gas spray port, a fuel burning port and an air return port, and the integrated furnace further comprises a gas and material outlet at the upper part of a furnace body and a slag discharge port at the bottom of the furnace body. The baking system comprises the integrated furnace, a preheater, a separation device, a collection device, a combustion-supporting fan and an induced draft fan, wherein the feed port of the integrated furnace is connected with the cyclone preheater, the gas and material outlet is connected with the separation device, the air return port is connected with the induced draft fan, and the slag discharge port is communicated with a slag sealing tank. The baking system disclosed by the utility model has the beneficial effects of integrating fuel burning, air return and mixing, magnetization and baking of reducing gas into the integrated furnace for completion and further simplifying the structure of the baking system. Tail gas is utilized in a circulating manner, and mineral powder in returned air is simultaneously prevented from affecting the burning process; equipment is explosion-proof, and the safety, continuity and stability of the system during operation are improved; the magnetization and baking reaction time is prolonged, and the magnetization rate of iron ore is improved.
Description
Technical field
The utility model relates to the flash magnetization roasting field, especially, relates to a kind of burning, mixing and roasting all-in-one oven.In addition, the utility model also relates to a kind of roasting system that comprises above-mentioned all-in-one oven.
Background technology
At present roasting system comprises hotblast stove, Reaktionsofen, and both divide and are arranged, then connect by pipeline.Fuel produces high-temperature flue gas in the hotblast stove internal combustion, simultaneously, the external reducing gas jet apparatus of hotblast stove, be mixed with reducing gas in hotblast stove, the reducing gas of preparation enters in Reaktionsofen by the air outlet of hotblast stove, when reducing gas temperature, air quantity and the composition in entering Reaktionsofen reaches processing requirement, reducing gas reacts with the material generation flash magnetization roasting after the preheating entered in Reaktionsofen, and material herein can be the iron ores such as rhombohedral iron ore, limonite, spathic iron ore.Prepare reducing gas by hotblast stove independently, be delivered to Reaktionsofen by pipeline again, this complex structure of one side, increased the manufacturing cost for burning, mixing and roasting body of heater, gas linearly rises in Reaktionsofen on the other hand, and gas is short at residing time in furnace, so gas-solid heat exchange and reaction times are short, cause mass-and heat-transfer efficiency low, the roasting system energy consumption is high.
In addition, independent hotblast stove is connected by pipeline with Reaktionsofen, while in operational process, meeting unexpected parking accident, in roasting system, material falls down and piles up in Reaktionsofen, causes the Reaktionsofen putty, and the cleaning difficulty is large, intensity is high, and in the flash magnetization roasting system process, high-temperature gas is reductibility, be prone to local detonation or blast, there is potential safety hazard.
Existing roasting system also comprises the return air branch road, its return air branch road directly is connected with hotblast stove, carry the mineral aggregate dust in return air tail gas and enter hotblast stove, deposit gradually, cause accumulated slag in hotblast stove, slag-drip opening obstruction, refractory materials to damage, while needing to recycle this part breeze, increase treatment process and equipment, cause whole roasting system to become complicated, reliability reduces.
In a word, existing roasting system is the split type setting of burning, mixing and roasting function, causes that system architecture is complicated, magnetizing roasting reaction maintenance of the equipment difficulty insufficient, in service is large, intensity is high and has the defect such as potential safety hazard.
The utility model content
The roasting system that the utility model purpose is to provide a kind of burning, mixing and roasting all-in-one oven and applies this all-in-one oven, to solve that existing roasting system complex structure, magnetizing roasting reaction maintenance of the equipment difficulty insufficient, in service is large, intensity is high and to have the technical problem of potential safety hazard.
For achieving the above object; according to an aspect of the present utility model; a kind of burning, mixing and roasting all-in-one oven are provided; comprise opening for feed, reducing gas spout, fuel combustion mouth and return air inlet; fuel combustion mouth and return air inlet are arranged at the below of reducing gas spout, and the reducing gas spout is arranged at the below of opening for feed; All-in-one oven also comprise be arranged at upper of furnace body give vent to anger, expect mouth, the below that the reducing gas spout is arranged at and gives vent to anger, expects mouthful.
Further, all-in-one oven also comprises the slag-drip opening that is arranged at bottom of furnace body, and the body of heater of slag-drip opening and all-in-one oven connects; Fuel combustion mouth and return air inlet all are arranged at the top of slag-drip opening.
Further, slag-drip opening is the cylinder-like structure that bore inside contracts, and slag-drip opening is connected by funnel shaped revolving drum with the body of heater of all-in-one oven.
Further, the reducing gas spout comprises a plurality of reducing gas imports, and each reducing gas import both sides is along a plurality of spouts that are circumferentially with inlet branch and connect with inlet branch; A plurality of spouts along the circumferential direction are evenly arranged on the body of heater of all-in-one oven.
Further, the fuel combustion mouth is communicated with a plurality of fuel burners; A plurality of fuel burners are along the circumferential direction evenly on the body of heater that is arranged in all-in-one oven of turn-knob; The spout axis of each fuel burner and the tangent to periphery direction of all-in-one oven are angle.
Further, return air inlet towards the spout with fuel burner towards consistent.
Further, return air inlet is arranged between reducing gas spout and fuel combustion mouth, or return air inlet is arranged between fuel combustion mouth and slag-drip opening, or two return air inlets are set simultaneously, first return air inlet is arranged between reducing gas spout and fuel combustion mouth, and second return air inlet is arranged between fuel combustion mouth and slag-drip opening.
Further, a plurality of reducings are set on the body of heater of all-in-one oven, a plurality of contracting are arranged at intervals between opening for feed and discharge port; Each reducing all is connected by funnel shaped revolving drum transition with the body of heater of all-in-one oven.
According to the opposing party of the present utility model and, a kind of roasting system of applying above-mentioned all-in-one oven also is provided, it comprises above-mentioned all-in-one oven, preheater, tripping device, collection device, burner blower and induced draft fan, the opening for feed of all-in-one oven is connected with cyclone preheater, the mouth of giving vent to anger, expect of all-in-one oven is connected with tripping device, return air inlet is connected with induced draft fan, and the slag-drip opening of all-in-one oven communicates with the envelope slag bath, and burner blower is connected with the fuel combustion mouth.
Further; preheater comprises one-level preheater and the secondary be communicated with the one-level preheater or mulitistage cyclone group; discharge port and the collection device of the air inlet of the giving vent to anger, expect mouthful of the discharge port of secondary or mulitistage cyclone group and the opening for feed of all-in-one oven, all-in-one oven, tripping device, material mouthful, tripping device are connected in turn, and the air outlet of tripping device is connected with the inlet mouth of secondary or mulitistage cyclone group; The inlet mouth of induced draft fan is connected with the air outlet of one-level preheater, and the air outlet of induced draft fan is connected with the return air inlet of all-in-one oven.
The utlity model has following beneficial effect: burning, mixing and roasting all-in-one oven, it is structurally integrated fuel combustion mouth, return air inlet, reducing gas spout and hydrolock slag-drip opening; Having realized on function that the new gas of fuel combustion, return air and reduction is blended into, is blended in same device completes, and has simplified the roasting system structure.Avoided the impact of breeze on combustion processes in return air in recycle tail gas; Simplified equipment explosion-proof equipment structure, security, the stability of the operation of raising system; Extend the magnetizing roasting reaction times, improve the susceptibility of iron ore.
Apply the roasting system of this all-in-one oven, its energy consumption is low, and production cost is low; Simultaneously, arranging of slag-drip opening and envelope slag bath improved security, stability and continuity that whole system is moved.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below, with reference to figure, the utility model is described in further detail.
The accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the all-in-one oven of the utility model preferred embodiment;
Fig. 2 is the cross sectional representation of the reducing gas spout of the utility model preferred embodiment;
Fig. 3 is the cross sectional representation of the fuel combustion mouth of the utility model preferred embodiment;
Fig. 4 be other embodiment of the utility model be provided with the all-in-one oven structural representation of different return air inlets position from Fig. 1;
Fig. 5 be other embodiment of the utility model be provided with the all-in-one oven structural representation of different return air inlets position from Fig. 1 and Fig. 4;
Fig. 6 is the structural representation of the roasting system with all-in-one oven of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, the utility model provides a kind of burning, mixing and roasting all-in-one oven, it comprises opening for feed 21, reducing gas spout 22, fuel combustion mouth 23 and return air inlet 24, fuel combustion mouth 23 and return air inlet 24 are arranged at the below of reducing gas spout 22, guarantee the abundant burning of coal dust, prevent that reducing gas is blended into the impact for combustion processes too early, reducing gas spout 22 is arranged at the below of opening for feed 21, guarantee that gas is own through realizing the abundant mixing of gas before contacting with powder, meet the processing condition of magnetizing roasting reaction atmosphere.All-in-one oven 2 also comprise be arranged at upper of furnace body give vent to anger, expect mouthfuls 27, reducing gas spout 22 is arranged at and gives vent to anger, expects mouthfuls 27 below.
In specific embodiment of the utility model, the fuel that fuel combustion mouth 23 sprays into is coal dust, and the reducing gas that reducing gas spout 22 sprays into is coal gas, contains a large amount of CO gas in coal gas.
All-in-one oven 2 also comprises the slag-drip opening 25 that is arranged at bottom of furnace body, and slag-drip opening 25 connects with the body of heater of all-in-one oven 2, and fuel combustion mouth 23 and return air inlet 24 all are arranged at the top of slag-drip opening 25.In the present embodiment during coal dust firing, if the large coal particles grain occurs or the cinder of melting occurs, can not be taken away by up high-temperature gas, can fall down along slag-drip opening 25, avoid cinder in the interior accumulation of all-in-one oven 2, be conducive to stability and the continuity of system.Preferably, the cylinder-like structure that slag-drip opening 25 inside contracts for bore, slag-drip opening 25 is connected by funnel shaped revolving drum with the body of heater of all-in-one oven.
Referring to Fig. 2, reducing gas spout 22 comprises a plurality of reducing gas imports 220, and each reducing gas import 220 both sides is along a plurality of spouts 222 that are circumferentially with inlet branch 221 and connect with inlet branch 221; A plurality of spouts 222 along the circumferential direction are evenly arranged on the body of heater of roasting all-in-one oven 2.In embodiment of the present utility model, reducing gas import 220 is two, the inlet branch 221 of a circular arc is arranged respectively in the both sides of each reducing gas import 220, the end of each inlet branch 221 radially projects the body of heater circumference that 222, four spouts 222 of a spout are evenly arranged in roasting all-in-one oven 2.The fuel such as coal dust are evenly sprayed in all-in-one oven along spout 222 by multiple spot, are conducive to the short mix of inner flue gas of the stove and coal gas, improve its homogeneity, simultaneously, when occurring that indivedual spouts 222 stop up, other spout still can provide gas composition, has solved the problem of maintenance blowing out.Preferably, reducing gas spout 22 one Cheng Li.
Referring to Fig. 3, fuel combustion mouth 23 is communicated with a plurality of fuel burners 230; A plurality of fuel burners 230 are along the circumferential direction evenly on the body of heater that is arranged in all-in-one oven 2 of turn-knob; The spout axis of each fuel burner 230 and the tangent to periphery direction of all-in-one oven 2 are at an angle, and its angular range is the 20-30 degree.The coal dust sprayed into, air and combustion air form annular flame when the stove internal combustion in stove, between flame, mutually entrainment, and are conducive to the abundant stable burning of coal dust.In conjunction with Fig. 1, return air inlet 24 towards the spout with fuel burner 230 towards consistent.The tail gas of return air enters all-in-one oven 2, and the high temperature oxidation stability flue gas that the fuel such as coal dust are produced produces stronger thrust, strengthens the flue gas spin intensity, and is conducive to mixing of tail gas and flue gas.
In conjunction with Fig. 4 and Fig. 5, according to concrete environment for use, as the body of heater size of all-in-one oven 2, the conditions such as the installation environment of equipment, return air inlet 24 can have three kinds of mounting means: the first: return air inlet 24 is arranged between reducing gas spout 22 and fuel combustion mouth 23; The second: return air inlet 24 is arranged between fuel combustion mouth 23 and slag-drip opening 25, is conducive to reduce the temperature in coal dust firing district, and the protection refractory materials, notice while arranging that return air can not directly aim at flame, presses close to as far as possible furnace wall and flows, in order to avoid affect coal dust stable burning; The third: the roasting all-in-one oven arranges two return air inlets 24 simultaneously, first return air inlet 24 is arranged between reducing gas spout 22 and fuel combustion mouth 23, can be according to the condition of production, the ratio of regulating between the two is regulated the combustion zone flame temperature, widens the range of choice of coal ash fusion point; Second return air inlet 24 is arranged between fuel combustion mouth 23 and slag-drip opening 25, the return air better effects if, and the efficiency of roasting system is higher.
A plurality of reducings 26 are set on the body of heater of all-in-one oven 2, and a plurality of reducings 26 are spaced, are arranged in opening for feed 21 and give vent to anger, expect between mouth 27; Each reducing 26 all is connected by funnel shaped revolving drum transition with the body of heater of roasting all-in-one oven 2.Funnel shaped revolving drum makes the flue gas that the carries material effect of spurting during by reducing, under the effect of spurting effect, and the time lengthening of flue gas in stove, the dispersed raising, material mixes more even with flue gas, be conducive to heat transfer and calcination.A plurality of reducings 26 are set, can repeatedly produce the effect of spurting, improve the magnetizing roasting transformation efficiency.
Referring to Fig. 6, the utility model also provides a kind of roasting system of applying above-mentioned all-in-one oven 2, and it comprises preheater 1, all-in-one oven 2, tripping device 3, collection device 4, burner blower 6, induced draft fan 7 and envelope slag bath 5; The opening for feed 21 of all-in-one oven 2 is connected with cyclone preheater 1, and the mouth 27 of giving vent to anger, expect of all-in-one oven 2 is connected with tripping device 3, and return air inlet 24 is connected with induced draft fan 7, and the slag-drip opening 25 of all-in-one oven 2 communicates with envelope slag bath 5.Burner blower 6 is connected with coal burner 23.Slag-drip opening 25 is immersed in envelope slag bath 5, according to water seal height, can be regulated explosion-proof pressure in stove, is conducive to stability and the continuity of roasting system.
Roasting system of the present utility model is in operational process, and on the one hand, former iron ore, enters in all-in-one oven 2 through the opening for feed 21 of all-in-one oven 2 to being discharged by the discharge port of preheater 1 after preheater 1 whirlwind preheating through feeding device.Reducing gas enters in all-in-one oven 2 through reducing gas spout 22, simultaneously, the high-temperature flue gas of the rotation that the fuel such as coal dust produce after all-in-one oven 2 internal combustion by fuel combustion mouth 23, its spiral is successively mixed with return air and reducing gas, form reducing atmosphere, the breeze continued after up and multistage preheating mixes, and carries out the flash magnetization roasting reaction.Reducing 26 makes the interior up material of stove produce the effect of spurting can extend gas, solid in the reaction in furnace time, makes the magnetization reaction more abundant, and the operational efficiency of system is higher.After reaction, the iron ore be reduced enters tripping device 3 under the carrying of high-temperature gas, finally by collection device 4, is collected.Simultaneously, during coal dust firing, the cinder that can not be taken away by flue gas directly enters envelope slag bath 5 by slag-drip opening 25, cooling fast.
On the other hand, the high-temperature flue gas that tripping device 3 is discharged enters preheater 1 for the preheating breeze, venting port from preheater 1 after tail gas after preheating separates is discharged, leading up to return air inlet 21 through induced draft fan 7 tangentially sprays in all-in-one oven 2, the high-temperature flue gas produced with coal dust firing in stove mixes, required flue-gas temperature in replenishment system air quantity, recycle using waste heat from tail gas and reducing gas composition, regulation integrated stove 2, and then reduce the energy consumption of whole roasting system, save production cost.
Spray into the reducing gas short mix under the drive of swirling eddy in all-in-one oven from reducing gas spout 22, and at high temperature with flue gas in residual oxygen rapid reaction, the final reductibility flue gas that forms, enter the calcination district and react with powdered iron ore generation magnetizing roasting.
On the other hand, another road tail gas of discharging from induced draft fan 7 is sent to the raw material stoving system, takes full advantage of its sensible heat, further reduces production energy consumption.
The utility model provides a kind of burning, mixing and roasting all-in-one oven and applies the roasting system of this all-in-one oven, and its beneficial effect is:
Burning, mixing and roasting all-in-one oven, it is structurally integrated fuel combustion mouth 23, return air inlet 24, reducing gas spout 22 and hydrolock slag-drip opening 25; Having realized on function that the new gas of fuel combustion, return air and reduction is blended into, is blended in same device completes, and has simplified the roasting system structure.Avoided the impact of breeze on combustion processes in return air in recycle tail gas; Simplified equipment explosion-proof equipment structure, security, the stability of the operation of raising system; Extend the magnetizing roasting reaction times, improve the susceptibility of iron ore.
Apply the roasting system of this all-in-one oven, its energy consumption is low, and production cost is low; Simultaneously, arranging of slag-drip opening and envelope slag bath improved security, stability and continuity that whole system is moved.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a burning, mixing and roasting all-in-one oven, it is characterized in that, described all-in-one oven (2) comprises opening for feed (21), reducing gas spout (22), fuel combustion mouth (23) and return air inlet (24), described fuel combustion mouth (23) and return air inlet (24) are arranged at the below of described reducing gas spout (22), and described reducing gas spout (22) is arranged at the below of described opening for feed (21);
Described all-in-one oven (2) also comprises and is arranged at the giving vent to anger, expect of upper of furnace body mouthful (27), and described reducing gas spout (22) is arranged at described below of giving vent to anger, expecting mouthful (27).
2. burning according to claim 1, mixing and roasting all-in-one oven, is characterized in that, described all-in-one oven (2) also comprises the slag-drip opening (25) that is arranged at bottom of furnace body, and described slag-drip opening (25) connects with the body of heater of described all-in-one oven (2);
Described fuel combustion mouth (23) and return air inlet (24) all are arranged at the top of described slag-drip opening (25).
3. burning according to claim 2, mixing and roasting all-in-one oven, is characterized in that, the cylinder-like structure that described slag-drip opening (25) inside contracts for bore, and described slag-drip opening (25) is connected by funnel shaped revolving drum with the body of heater of described all-in-one oven (2).
4. burning according to claim 2, mixing and roasting all-in-one oven, it is characterized in that, described reducing gas spout (22) comprises a plurality of reducing gas imports (220), and each described reducing gas import (220) both sides is along a plurality of spouts (222) that are circumferentially with inlet branch (221) and connect with described inlet branch (221);
A plurality of described spouts (222) along the circumferential direction are evenly arranged on the body of heater of described all-in-one oven (2).
5. burning according to claim 2, mixing and roasting all-in-one oven, is characterized in that, described fuel combustion mouth (23) is communicated with a plurality of fuel burners (230);
A plurality of described fuel burners (230) are along the circumferential direction evenly on the body of heater that is arranged in described all-in-one oven (2) of turn-knob;
The tangent to periphery direction of the spout axis of each described fuel burner (230) and described all-in-one oven (2) is angle.
6. burning according to claim 5, mixing and roasting all-in-one oven, is characterized in that, described return air inlet (24) towards the spout with described fuel burner (230) towards consistent.
7. burning according to claim 2, mixing and roasting all-in-one oven, it is characterized in that, described return air inlet (24) is arranged between described reducing gas spout (22) and described fuel combustion mouth (23), or described return air inlet (24) is arranged between described fuel combustion mouth (23) and described slag-drip opening (25), or described all-in-one oven (2) arranges two described return air inlets (24) simultaneously.
8. according to the described burning of any one in claim 1 to 7, mixing and roasting all-in-one oven, it is characterized in that, it is characterized in that, a plurality of reducings (26) are set on the body of heater of described all-in-one oven (2), and described a plurality of reducings (26) are arranged at intervals at described opening for feed (21) and describedly give vent to anger, expect between mouthful (27); Each described reducing (26) all is connected by funnel shaped revolving drum transition with the body of heater of described all-in-one oven (2).
9. a roasting system, comprise preheater (1), tripping device (3), collection device (4), burner blower (6) and induced draft fan (7), it is characterized in that, described roasting system also comprises the described burning of any one in envelope slag bath (5) and claim 1 to 8, mixing and roasting all-in-one oven (2);
The opening for feed (21) of described all-in-one oven (2) is connected with described preheater (1), the discharge port (27) of described all-in-one oven (2) is connected with described tripping device (3), described return air inlet (24) is connected with described induced draft fan (7), the slag-drip opening (25) of described all-in-one oven (2) communicates with described envelope slag bath (5), and described burner blower (6) is connected with described fuel combustion mouth (23).
10. roasting system according to claim 9, is characterized in that, described preheater (1) comprises one-level preheater (11) and the secondary be communicated with described one-level preheater (11) or mulitistage cyclone group (12),
Discharge port and the described collection device (4) of the air inlet of giving vent to anger, expecting mouthful (27), described tripping device (3) of the discharge port of described secondary or mulitistage cyclone group (12) and the opening for feed (21) of described all-in-one oven (2), described all-in-one oven (2), material mouthful, described tripping device (3) are connected in turn, and the air outlet of described tripping device (3) is connected with the inlet mouth of described secondary or mulitistage cyclone group (12);
The inlet mouth of described induced draft fan (7) is connected with the air outlet of described one-level preheater (11), and the air outlet of described induced draft fan (7) is connected with the return air inlet (24) of described all-in-one oven (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202367232U CN203333728U (en) | 2013-05-03 | 2013-05-03 | Burning, mixing and baking integrated furnace and baking system applying integrated furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202367232U CN203333728U (en) | 2013-05-03 | 2013-05-03 | Burning, mixing and baking integrated furnace and baking system applying integrated furnace |
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| CN203333728U true CN203333728U (en) | 2013-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610951A (en) * | 2020-12-17 | 2021-04-06 | 烟台市红森林节能环保科技有限公司 | Multipurpose fluidized bed type fluidized bed furnace and system with fully reduced atmosphere |
| CN113174478A (en) * | 2021-04-27 | 2021-07-27 | 鑫选(厦门)矿冶科技有限公司 | Weak magnetic mineral powder preheating treatment reduction system and electronic device |
-
2013
- 2013-05-03 CN CN2013202367232U patent/CN203333728U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610951A (en) * | 2020-12-17 | 2021-04-06 | 烟台市红森林节能环保科技有限公司 | Multipurpose fluidized bed type fluidized bed furnace and system with fully reduced atmosphere |
| CN113174478A (en) * | 2021-04-27 | 2021-07-27 | 鑫选(厦门)矿冶科技有限公司 | Weak magnetic mineral powder preheating treatment reduction system and electronic device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |