CN202415585U - Hot-blast stove for spraying mixed coal gas and air in loop from uniformly-distributed spray nozzles to form reflow for combusting - Google Patents

Hot-blast stove for spraying mixed coal gas and air in loop from uniformly-distributed spray nozzles to form reflow for combusting Download PDF

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Publication number
CN202415585U
CN202415585U CN201220025664XU CN201220025664U CN202415585U CN 202415585 U CN202415585 U CN 202415585U CN 201220025664X U CN201220025664X U CN 201220025664XU CN 201220025664 U CN201220025664 U CN 201220025664U CN 202415585 U CN202415585 U CN 202415585U
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chamber
combustion chamber
backflow
hotblast stove
heat storage
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CN201220025664XU
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Chinese (zh)
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陈维汉
刘辉凯
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陈维汉
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Abstract

The utility model relates to a hot-blast stove for spraying mixed coal gas and air in a loop from uniformly-distributed spray nozzles to form reflow for combusting. According to the hot-blast stove, the problems of low mixing speed, non-uniformity, low combustion intensity, incomplete combustion, complex combustion chamber space and combustor structure and the like are effectively solved. A reflow precombustion chamber is arranged in a reflow precombustion chamber wall body; the reflow precombustion chamber wall body is connected with a combustion chamber wall body; the combustion chamber wall body is connected with a hot-blast stove wall body; a hot-blast outlet pipe is arranged on the combustion chamber wall body; a coal gas and air inlet pipe on the reflow precombustion chamber wall body is connected with a premixing loop; a gas premixing nozzle at the middle of the premixing loop is connected with a gas premixing guiding annular groove; a heat accumulating chamber is arranged at the lower part of the combustion chamber in the combustion chamber wall body; a grate and a support pillar are arranged at the lower part of the heat accumulating chamber; heat accumulators are arranged in the heat accumulating chamber; and a flue gas outlet pipe and a cold air inlet pipe are arranged on a cold air chamber at the lower part of the grate. According to the hot-blast stove, the excess enthalpy combustion, high-efficiency heat transfer and high-strength combustion are realized; and the structure is simplified and the investment expenses are saved.

Description

Coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit
Technical field
The utility model relates to and is used to blast furnace and provides in a kind of circuit of high temperature blast coal gas to be uniformly distributed with air mixed to spray backflow incendiary hotblast stove on the nozzle.
Background technology
Current, blast funnace hot blast stove considers to require acquisition high-performance and high benefit under the lower heat of combustion blast furnace gas from energy-saving and cost-reducing, and finally reach efficiently, the purpose of energy-saving and environmental protection, raising the output.For this reason, combustion processes of in hotblast stove, accomplish strengthening and heat transfer process efficiently, and to make it organically to combine be exactly the prerequisite that reaches above-mentioned target, this just relates to the tissue of combustion unit performance, heat storage body structure and layout and air velocity distribution.Make a general survey of the various hotblast stoves of present use; Its gas combustion apparatus all with coal gas mix in the combustion space with air, preheating, the combustion mode of catching fire be main, always there is problems such as mixing inequality, incomplete combustion, the bags are big, burner structure complicacy in this pattern; Air current composition in its combustion chamber and the regenerator misorient (application of flow velocity selection, distribution of air flow and control, eddy flow and reflux state etc.); Cause that the changing features of combustion gas flowing is big in the combustion chamber, air-flow is unstable, intensity of combustion is low; Cause air-flow skewness in the regenerator, reduce the utilization ratio of heat-transfer effect and heat storage; The structure of its heat storage all is difficult to choose according to flow field structure and load condition with layout, thus the performance of entire effect hotblast stove and practical effect.
Summary of the invention
To above-mentioned situation; For overcoming the defective of prior art; The purpose of the utility model just provides in a kind of circuit coal gas and is uniformly distributed with air mixed and sprays backflow incendiary hotblast stove on the nozzle, effectively overcome coal gas and air mixed combustion mode occur easily mixing rate low, mix that intensity of combustion inhomogeneous and that cause thus is low, problems such as the bags of incomplete combustion, needs and burner structure complicacy.
The technical scheme that the utility model solves is; The pre-mixing circuit, premix gas jets, premix conductance that comprises backflow settling chamber body of wall, backflow settling chamber, combustion chamber body of wall, combustion chamber, gas inlet pipe, air intake duct, coal gas and air to annular groove, regenerator and with the space of combustion chamber in heat storage, hotblast stove body of wall, fire grate, pillar stiffener, cold air chamber, smoke outlet tube, cold wind inlet pipe and the hot-blast outlet pipe piled up; Backflow settling chamber body of wall is that the spherical vault on top and the cylinder of bottom are combined into one formation; The internal space is the backflow settling chamber; The combustion chamber body of wall of backflow settling chamber body of wall and bottom is connected; The hotblast stove body of wall of combustion chamber body of wall and bottom is connected; The combustion chamber body of wall is that two ends are cylindric, and the middle part is the structure of conical shell, and the roundlet cylindrical shell area of upper end is less than the large cylinder bulk area of lower end; The large cylinder body side surface ringwall of lower end is provided with hot-blast outlet pipe; Vertical its axis arranged has gas inlet pipe and air intake duct on the cylinder of backflow settling chamber body of wall, and gas inlet pipe or inclination vertical with air intake duct is connected builds by laying bricks or stones at the intravital pre-mixing circuit of backflow settling chamber wall, and the cross section of pre-mixing circuit is a rectangle; The middle part of inboard ringwall circumferentially evenly is provided with the premix gas jets of dozens of square-section along circuit; The bending of premix gas jets upwards connects the annular bottom surface of premix conductance to annular groove, and the premix conductance is positioned at the top at inboard socket (or overlapping) position, the roundlet cylindrical shell outside with the combustion chamber body of wall of the cylinder of backflow settling chamber body of wall to annular groove, and the cross section is the trapezoidal shape of top opening; Regenerator is arranged at bottom, the intravital combustion chamber of heating wall; The regenerator bottom places intravital fire grate of columnar hotblast stove wall and pillar stiffener; Regenerator is the internal space of the hotblast stove body of wall of intravital lower space of heating wall and fire grate top; Upwards to the combustion chamber, all be stacked with heat storage from fire grate in the regenerator, in the hotblast stove body of wall of fire grate bottom cold air chamber arranged, cold air chamber's side wall is provided with smoke outlet tube and cold wind inlet pipe.
Use this hotblast stove can be implemented in the combustion unit coal gas and air through the pre-mixing circuit short mix; And the premix gas jets that is uniformly distributed with from circuit inside wall turnover upwards gets into the backflow settling chamber through the premix conductance to annular groove; Accomplish the concentrated and fast and stable ground burning after the preheating of backflow high-temperature flue gas of abundant premixed gas, thereby efficiently solve key issues such as low-heat value gas combustion instability, intensity of combustion is weak, temperature of combustion is low; With coal gas and incendiary between air while mixing take burning mass spatial long flame combustion system change into the backflow preheat premixed flow fast and the high-intensity combustion mode.Accomplish in view of combustion processes concentrates in the backflow settling chamber, just can fully pile up heat storage in the combustion chamber of the awl section shape under it, so just greatly saved the combustion space of hotblast stove, effectively reduce its cost of manufacture.Adopt this flameless combustion mode not only to improve the incendiary completeness but also dwindled the bags; And realize the stable of flame (burning) by the gyration airflow of backflow settling chamber; Unreacted fuel gas flows into that the top heat storage can to a certain degree be realized the burning of ultra enthalpy and the temperature that effectively improves temperature of combustion and top checker brick has been created very advantageous conditions for high wind-warm syndrome is provided.If heat storage adopts the structure of checkerwork cell intercommunication, and is more intense because of its pressure regulation current-sharing effect to air-flow, can effectively improve the utilization ratio and enhancing heat exchanging process of heat storage, therefore the spatial altitude of regenerator also can reduce.Especially in the air-supply stage of hotblast stove, the pressure regulation current-sharing effect of heat storage is more obvious for the homogeneity effect of improving the distribution of cold wind air-flow.Therefore; This hotblast stove adopts the high-intensity combustion pattern of the steady flame of spraying backflow preheat on the premix gas for the hotblast stove of the combustion unit of other employing gaseous combustion types, and stacks heat storage to accomplish to a certain degree to realize ultra enthalpy burning in the combustion chamber; And heat storage in the regenerator and the high duty heat transfer between air-flow; Just can greatly improve the thermal property of hotblast stove, make that hotblast stove can be under the condition of lower heat of combustion coal gas, at coal gas and air all under the condition of not preheating; Realize in the heat storage to a certain degree high-intensity combustion from preheating, thus possess efficient, high wind-warm syndrome, with the function of energy-conserving and environment-protective.In addition, the further simplification of structure and the compact saving that not only can bring investment cost also are the stable condition that provides the foundation of hotblast stove structure.
Description of drawings
Fig. 1 is the sectional front view of the utility model.
Fig. 2 is an A-A portion sectional view among the utility model Fig. 1.
Fig. 3 is a B-B portion sectional view among the utility model Fig. 1.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the utility model.
Like Fig. 1-shown in Figure 3; The pre-mixing circuit 5, premix gas jets 6, premix conductance that the utility model comprises backflow settling chamber body of wall 1, backflow settling chamber 2, combustion chamber body of wall 1a, combustion chamber 2a, gas inlet pipe 3, air intake duct 4, coal gas and air to annular groove 6a, regenerator 8 and with the space of combustion chamber in heat storage, hotblast stove body of wall 7, fire grate 9, pillar stiffener 9a, cold air chamber 10, smoke outlet tube 13, cold wind inlet pipe 12 and the hot-blast outlet pipe 14 piled up; Backflow settling chamber body of wall 1 is that the spherical vault on top and the cylinder of bottom are combined into one formation; The internal space is a backflow settling chamber 2; The combustion chamber body of wall 1a of backflow settling chamber body of wall 1 and bottom is connected; The hotblast stove body of wall 7 of combustion chamber body of wall 1a and bottom is connected; Combustion chamber body of wall 1a is that two ends are cylindric, and the middle part is the structure of conical shell, and the roundlet cylindrical shell area of upper end is less than the large cylinder bulk area of lower end; The large cylinder body side surface ringwall of lower end is provided with hot-blast outlet pipe 14; Vertical its axis arranged has gas inlet pipe 3 and air intake duct 4 on the cylinder of backflow settling chamber body of wall 1, and gas inlet pipe or inclination vertical with air intake duct is connected the pre-mixing circuit 5 of building by laying bricks or stones in backflow settling chamber body of wall 1, and the cross section of pre-mixing circuit is a rectangle; The middle part of inboard ringwall circumferentially evenly is provided with the premix gas jets 6 of dozens of square-section along circuit; The bending of premix gas jets upwards connects the annular bottom surface of premix conductance to annular groove 6a, and the premix conductance is positioned at the top at inboard socket (or overlapping) position, the roundlet cylindrical shell outside with combustion chamber body of wall 1a of the cylinder of backflow settling chamber body of wall 1 to annular groove, and the cross section is the trapezoidal shape of top opening; Regenerator 8 is arranged at the 2a bottom, combustion chamber in the body of wall 1a of combustion chamber; Fire grate 9 and the pillar stiffener 9a that places in the columnar hotblast stove body of wall 7 arranged at the regenerator bottom; Regenerator 8 is the internal space of the hotblast stove body of wall 7 of interior lower space of combustion chamber body of wall 1a and fire grate top; Upwards to the 2a of combustion chamber, all be stacked with heat storage from fire grate 9 in the regenerator 8, in the hotblast stove body of wall 7 of fire grate 9 bottoms cold air chamber 10 arranged, cold air chamber's side wall is provided with smoke outlet tube 13 and cold wind inlet pipe 12.
Described backflow settling chamber body of wall 1 is the refractory masses formation of on the metal shell inwall, building high temperature resistant (1300 ℃~1500 ℃) by laying bricks or stones with combustion chamber body of wall 1a, and refractory masses is combined formation by the anti-material of heavy (like Low Creep High Alumina Bricks or andaluzite high alumina brick) internal layer, the anti-material of lightweight (gathering light brick like light weeight alumina brick or high alumina) skin and ceramic fiber cotton and sprayed coating outside outer; Described gas inlet pipe 3 is on inner wall of metal tube, to build the circular passage that refractory materials (like high alumina brick or clay brick) constitutes by laying bricks or stones with air intake duct 4; Gas inlet pipe 3 places the top of air intake duct 4, and gas inlet pipe and air intake duct circumferentially evenly are furnished with 1~3 along the cylinder of backflow settling chamber body of wall 1 respectively; Described backflow settling chamber 2 is to be mushroom-shaped spatial mushroom head shapes; Described gas inlet pipe 3 and air intake duct 4 all are connected pre-mixing circuit 5 with 0~30 ° angle; The inboard ringwall of pre-mixing circuit middle part has 40~80 along the circumferential equally distributed premix gas jets 6 of circuit; One end of premix gas jets is the rectangular opening of on the inboard ringwall of pre-mixing circuit, opening; The other end is the crooked rectangular opening of premix conductance on the annular bottom surface of annular groove 6a that connect vertically upward, and the premix conductance is the circular ring slot of trapezoid cross section of the upper opening of building by laying bricks or stones with high temperature resistant shock proof refractory materials (like andaluzite high alumina brick, dichroite-mullite brick etc.) to annular groove 6a; The little cylinder of described combustion chamber body of wall 1a is connected through arc transiting surface with the conical shell at middle part respectively with the great circle cylindrical shell; To avoid the stress concentration of structure; The conical surface of conical shell and the angle of bottom surface are greater than 60 °, and the conical surface of the hotblast stove conical shell that air quantity is big more and the angle of bottom surface are just big more; Described hot-blast outlet pipe 14 is that the refractory materials (like Low Creep High Alumina Bricks, andaluzite corundum brick etc.) with high temperature resistant and stable performance is built by laying bricks or stones and formed; Described fire grate 9 is porous inseries of being processed by heat resisting iron, places on the pillar stiffener 9a that heat resisting iron processes, and pillar stiffener places in the cold air chamber 10; Described hotblast stove body of wall 7 is on the metal shell inwall, to build the cylinder that refractory materials (being respectively siliceous brick or andaluzite matter brick from top to bottom, high alumina matter brick and clay matter brick) constitutes by laying bricks or stones; Be the slidably mutual socket of shape (overlapping) together through first labyrinth seal structure 15 between described backflow settling chamber body of wall 1 and the combustion chamber body of wall 1a; Be slidably through the second labyrinth seal structure 15a that shape connects together each other between combustion chamber body of wall 1a and the hotblast stove body of wall 7, realize the unstressed connection of anti-heads; Described heat storage is checker brick or refractory ball; From top to bottom be aligned in sequence with the first heat storage 8a, the second heat storage 8b, the 3rd heat storage 8c and the 4th heat storage 8d; The first heat storage 8a is that siliceous checker brick, the second heat storage 8b are that andaluzite high alumina checker brick, the 3rd heat storage 8c are andaluzite clay checker brick; The 4th heat storage 8d is the clay checker brick, and the checkerwork cell of heat storage is the taper circular hole, and the groove of intercommunication is arranged between checkerwork cell and the checkerwork cell; Place the first heat storage 8a stacking of combustion chamber 2a to be truncated cone-shaped, the second heat storage 8b, the 3rd heat storage 8c and the 4th heat storage 8d stack cylindrical; Described smoke outlet tube 13 is the interior structure that joins together with hotblast stove body of wall 7 that build by laying bricks or stones with refractory materials (being generally clay brick) of metal tube with cold wind inlet pipe 12; Hotblast stove body of wall 7 is fixed together with disc furnace bottom 11; Groined type groove joist steel is set on the disc furnace bottom; With the stability of reinforcing structure, be fixed with the pillar stiffener 9a that places fire grate 9 bottoms on the disc furnace bottom.
Can know the mutual socket of the little cylinder in upper end of the bottom cylinder of the backflow settling chamber body of wall of the utility model and combustion chamber body of wall by said structure; The lower end great circle cylindrical shell of combustion chamber body of wall with its under the mutual socket in top (or insert is connected) of hotblast stove body of wall; Adopted the syndeton of labyrinth seal formula for making between them slippage each other; Between hotblast stove body of wall 7 and the combustion chamber body of wall 1a also is mutual socket, is to realize interconnecting (or overlapping) through labyrinth seal syndeton 15a.
When using this hotblast stove; After coal gas and air get into inlet pipe separately respectively; From getting into coal gas and air pre-mixing cyclization road 5 up and down, two kinds of air-flows meet and mixing each other rapidly therein, form the air-flow of going up spray at a high speed by premix gas jets 6 again and get into the premix conductance to annular groove 6a respectively; And upwards get into backflow settling chamber 2 from upper opening; Along with turning back of last gaseous blast, whole air velocity distribution just forms a collar vortex structure, becomes air-flow intense mixing, rapidly pre-warming, catches fire and the incendiary environment rapidly; Along with air-flow gets into combustion chamber 2a downwards; After the first heat storage 8a that taper is stacked accomplishes combustion processes and produces higher temperature of combustion; Flue gas gets into second, third and the 4th heat storage in the regenerator 8 successively with equally distributed flow field structure; Wait to get into after accomplishing heat exchange cold air chamber 10, and leave hotblast stove through smoke outlet tube 13.Hotblast stove gets into the air-supply stage after accomplishing the combustion processes stage; Cold-blast this moment gets into cold air chamber 10 from cold wind inlet pipe 12; Get into successively among heat storage 8d, 8c, 8b and the 8a in the regenerator 8 through fire grate 9 again, and carry out heat exchange with it, absorb heat and progressively become hot-blast afterwards; And get into combustion chamber 2a, be sent to blast furnace through hot-blast outlet pipe 14 again.Above-mentioned combustionphase and air-supply stage alternately carry out in a hotblast stove, form periodic running status.When the hotblast stove more than two is alternately accomplished combustionphase with the stage of air-supply, can realize continuously carrying hot-blast to blast furnace.Usually hotblast stove is that three or all the people present form one continuously to the hot blast stove system of blast furnace air-supply, to blast furnace hot-blast is provided with stable manner more.
From the above; Pattern for air-flow mixed firing in the combustion chamber; Key be mix rapidly and uniformly, backflow preheat and evenly burning rapidly makes combustion processes be able in combustion unit (settling chamber and combustion chamber) to accomplish, make that completion incendiary space is further dwindled; Further select heat storage on this basis, normally use checker brick, can adjust air current flow characteristic wherein, realize that uniform airflow distributes and enhance heat transfer-heat-accumulating process in the heat storage through the texture improvement of checker brick.
In a word; The described hotblast stove of the utility model adopts compact and unique chamber structure; Realize that coal gas and air are uniformly distributed with nozzle from annular behind the rapid and uniform premix and spray in the pre-mixing circuit; Form backflow preheat, catch fire and burn intensively rapidly in settling chamber, and effectively improve the partial combustion temperature, cause the enabling environment of high-intensity combustion by the self-preheating effect of backflow spiral; Get into the combustion chamber subsequently and in the heat storage that its taper is stacked, accomplish combustion processes, form current-sharing, samming at last, get into the flue gas flow of regenerator with high speed.Heat storage in the regenerator adopts small dia, and the novel checker brick or the refractory ball of big hole pitch and checkerwork cell and checkerwork cell intercommunication are so that the adjustment air-flow distributes and strengthens air-flow heat transfer process with it.Use the hotblast stove of this structure can effectively realize efficient, the high temperature of hotblast stove, all speed, high-heat strength and operations of safety and stablization ground, reach fuel saving then, practice thrift investment, reduce the good result of spent air temp and discharge of harmful gases amount, minimizing environmental pollution.

Claims (10)

1. coal gas is uniformly distributed with air mixed and sprays backflow incendiary hotblast stove on the nozzle in the circuit; The pre-mixing circuit (5), premix gas jets (6), premix conductance that comprises backflow settling chamber body of wall (1), backflow settling chamber (2), combustion chamber body of wall (1a), combustion chamber (2a), gas inlet pipe (3), air intake duct (4), coal gas and air to annular groove (6a), regenerator (8) and with the space of combustion chamber in heat storage, hotblast stove body of wall (7), fire grate (9), pillar stiffener (9a), cold air chamber (10), smoke outlet tube (13), cold wind inlet pipe (12) and the hot-blast outlet pipe (14) piled up; It is characterized in that; Backflow settling chamber body of wall (1) is that the spherical vault on top and the cylinder of bottom are combined into one formation; The internal space is backflow settling chamber (2); The combustion chamber body of wall (1a) of backflow settling chamber body of wall (1) and bottom is connected; The hotblast stove body of wall (7) of combustion chamber body of wall (1a) and bottom is connected; Combustion chamber body of wall (1a) is that two ends are cylindric; The middle part is the structure of conical shell; The roundlet cylindrical shell area of upper end is less than the large cylinder bulk area of lower end, and the large cylinder body side surface ringwall of lower end is provided with hot-blast outlet pipe (14), and vertical its axis arranged has gas inlet pipe (3) and air intake duct (4) on the cylinder of backflow settling chamber body of wall (1); Gas inlet pipe and air intake duct are vertical or tilt to be connected the pre-mixing circuit (5) of building by laying bricks or stones in backflow settling chamber body of wall (1); The cross section of pre-mixing circuit is a rectangle, and the middle part of inboard ringwall circumferentially evenly is provided with the premix gas jets (6) of dozens of square-section along circuit, and the bending of premix gas jets upwards connects the annular bottom surface of premix conductance to annular groove (6a); The premix conductance is positioned at the top of the inboard roundlet cylindrical shell outside belled position with combustion chamber body of wall (1a) of the cylinder of backflow settling chamber body of wall (1) to annular groove, and the cross section is the trapezoidal shape of top opening; Regenerator (8) is arranged at the bottom, combustion chamber (2a) in the combustion chamber body of wall (1a); Fire grate (9) and the pillar stiffener (9a) that places in the columnar hotblast stove body of wall (7) arranged at the regenerator bottom; Regenerator (8) is the internal space of the hotblast stove body of wall (7) of interior lower space of combustion chamber body of wall (1a) and fire grate top; Upwards in combustion chamber (2a), all be stacked with heat storage from fire grate (9) in the regenerator (8); In the hotblast stove body of wall (7) of fire grate (9) bottom cold air chamber (10) is arranged, cold air chamber's side wall is provided with smoke outlet tube (13) and cold wind inlet pipe (12).
2. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described backflow settling chamber body of wall (1) and combustion chamber body of wall (1a) constitute on the metal shell inwall, building resistant to elevated temperatures refractory masses by laying bricks or stones, and refractory masses is made up of cotton the combining with sprayed coating of the ceramic fiber of the heavy internal layer of anti-material the, the anti-material skin of lightweight and outer outside.
3. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described gas inlet pipe (3) and air intake duct (4) are on inner wall of metal tube, to build the circular passage that refractory materials constitutes by laying bricks or stones; Gas inlet pipe (3) places the top of air intake duct (4), and gas inlet pipe and air intake duct circumferentially evenly are furnished with 1~3 along the cylinder of backflow settling chamber body of wall (1) respectively.
4. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described gas inlet pipe (3) and air intake duct (4) all are connected pre-mixing circuit (5) with 0~30 ° angle; The inboard ringwall of pre-mixing circuit middle part has 40~80 along the circumferential equally distributed premix gas jets of circuit (6); One end of premix gas jets is the rectangular opening of on the inboard ringwall of pre-mixing circuit, opening; The other end is that bending connects the rectangular opening of premix conductance on the annular bottom surface of annular groove (6a) vertically upward, and the premix conductance is the circular ring slot that falls the trapezoid cross section of the upper opening of building by laying bricks or stones with high temperature resistant shock proof refractory materials to annular groove (6a).
5. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that the little cylinder of described combustion chamber body of wall (1a) is connected through arc transiting surface with the conical shell at middle part respectively with the great circle cylindrical shell.
6. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described fire grate (9) is the porous insert of being processed by heat resisting iron; Place on the pillar stiffener (9a) that heat resisting iron processes, pillar stiffener places in the cold air chamber (10).
7. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1, it is characterized in that described hotblast stove body of wall (7) is on the metal shell inwall, to build the cylinder that refractory materials constitutes by laying bricks or stones.
8. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Be slidably through first labyrinth seal structure (15) that shape connects together each other between described backflow settling chamber body of wall (1) and the combustion chamber body of wall (1a), warp second labyrinth seal structure (15a) is slidably that shape connects together each other between combustion chamber body of wall (1a) and the hotblast stove body of wall (7).
9. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described heat storage is checker brick or refractory ball; From top to bottom be aligned in sequence with first heat storage (8a), second heat storage (8b), the 3rd heat storage (8c) and the 4th heat storage (8d), first heat storage (8a) is that siliceous checker brick, second heat storage (8b) are andaluzite clay checker brick for andaluzite high alumina checker brick, the 3rd heat storage (8c), the 4th heat storage (8d) is the clay checker brick; The checkerwork cell of heat storage is the taper circular hole; The groove that intercommunication is arranged between checkerwork cell and the checkerwork cell places first heat storage (8a) stacking of combustion chamber (2a) to be truncated cone-shaped, and second heat storage (8b), the 3rd heat storage (8c) and the 4th heat storage (8d) are stacked cylindrical.
10. coal gas and air mixed are uniformly distributed with spray backflow incendiary hotblast stove on the nozzle in the circuit according to claim 1; It is characterized in that; Described smoke outlet tube (13) and cold wind inlet pipe (12) are the interior structure that joins together with hotblast stove body of wall (7) that build by laying bricks or stones with refractory materials of metal tube; Hotblast stove body of wall (7) is fixed together with disc furnace bottom (11); Groined type groove joist steel is set on the disc furnace bottom, is fixed with the pillar stiffener (9a) that places fire grate (9) bottom on the disc furnace bottom.
CN201220025664XU 2012-01-19 2012-01-19 Hot-blast stove for spraying mixed coal gas and air in loop from uniformly-distributed spray nozzles to form reflow for combusting CN202415585U (en)

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CN201220025664XU CN202415585U (en) 2012-01-19 2012-01-19 Hot-blast stove for spraying mixed coal gas and air in loop from uniformly-distributed spray nozzles to form reflow for combusting

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912056A (en) * 2012-10-30 2013-02-06 陈维汉 Hot air furnace with function of jetting individual premixed gas streams to flow back into preheating regenerator to be combusted
CN103900084A (en) * 2014-04-23 2014-07-02 陈维汉 Turbulent combustor allowing premixed gas flow to force flue gas to flow back for preheating combustion
CN103924022A (en) * 2014-05-12 2014-07-16 陈维汉 Combustor with coal gas and air premixed grills to achieve spray, backflow, preheating and combustion
CN104390230A (en) * 2014-11-28 2015-03-04 合肥工业大学 Garbage excess enthalpy combustion researching test furnace
CN106435079A (en) * 2016-12-07 2017-02-22 魏晓辉 Full-time combustion heat exchange furnace

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912056A (en) * 2012-10-30 2013-02-06 陈维汉 Hot air furnace with function of jetting individual premixed gas streams to flow back into preheating regenerator to be combusted
CN103900084A (en) * 2014-04-23 2014-07-02 陈维汉 Turbulent combustor allowing premixed gas flow to force flue gas to flow back for preheating combustion
CN103900084B (en) * 2014-04-23 2015-12-30 陈维汉 A kind of premixed flow forces the turbulent burner of smoke backflow preheated burning
CN103924022A (en) * 2014-05-12 2014-07-16 陈维汉 Combustor with coal gas and air premixed grills to achieve spray, backflow, preheating and combustion
CN104390230A (en) * 2014-11-28 2015-03-04 合肥工业大学 Garbage excess enthalpy combustion researching test furnace
CN104390230B (en) * 2014-11-28 2016-09-28 合肥工业大学 A kind of trial furnace studying rubbish excess enthalpy combustion
CN106435079A (en) * 2016-12-07 2017-02-22 魏晓辉 Full-time combustion heat exchange furnace
CN106435079B (en) * 2016-12-07 2018-07-27 魏晓辉 A kind of full-time combustion heat-exchange stove

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