CN201770720U - Hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove - Google Patents
Hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove Download PDFInfo
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- CN201770720U CN201770720U CN2010202676317U CN201020267631U CN201770720U CN 201770720 U CN201770720 U CN 201770720U CN 2010202676317 U CN2010202676317 U CN 2010202676317U CN 201020267631 U CN201020267631 U CN 201020267631U CN 201770720 U CN201770720 U CN 201770720U
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Abstract
The utility model relates to a hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove, which effectively solves the problems of complex structure, uneven gas mixture, inadequate combustion, environmental contamination and energy waste. The hot blast stove adopts the structure that a precombustion chamber in the shape of a top bell cover of a bowling ball is in stressless labyrinth connection with a tapered-segment cylindrical combustion chamber below the precombustion chamber; the tapered-segment combustion chamber is filled with porous heat retainers; a coal gas inlet pipe and an air inlet pipe are arranged on the vertical wall body of the precombustion chamber; a cylindrical regenerative chamber is positioned below the combustion chamber; checker-brick heat retainers are stacked on the grates in the regenerative chamber; a cold draft chamber is positioned below the regenerative chamber, and a flue gas discharge pipe and a cold draft inlet pipe are connected to the wall body of the cold draft chamber; expansion gaps are reserved among the grates for placing the heat retainers, and the grates are placed on cross beams and are supported by grate supporting columns; the supporting columns are fixed on a rigid base of the hot blast stove; and a hot-blast outlet pipe is arranged on the center line at the vault of the precombustion chamber and is coaxial with the hot blast stove. The hot blast stove of the utility model has the advantages of simple structure, high co-combustion intensity and good airflow heat exchange effect, and promotes the hot-blast temperature.
Description
One, technical field
The utility model relates to hotblast stove, incendiary high-blast-temperature hot-blast stove in particularly a kind of eddy flow heat storage medium that liquidates.
Two, background technology
At present, blast funnace hot blast stove has entered the top combustion stove epoch, consider to require blast furnace blast to develop from energy-saving and cost-reducing to high wind-warm syndrome direction, especially under the lower heat of combustion blast furnace gas, obtain high hot blast temperature, and also to reach certain thermo-efficiency, and the final purpose that realizes efficient, energy-saving and environmental protection, volume increase.Hotblast stove will be realized efficient and high wind-warm syndrome, key is that can its combustion processes and heat transfer process reach high-intensity combustion and high duty heat transfer, and can the two appropriately and effectively combine, so just relate to the combustion unit and the heat accumulation-heat transfer device of hotblast stove.Make a general survey of all gases combustion unit of present use, all based on coal gas mix in the combustion space with air, preheating, the combustion mode of catching fire, always this pattern exist mix inequality, incomplete combustion, the bags is big, burner structure is complicated, combustion gas flowing is organized improper (air-flow skewness), the combustion gas flowing feature is with load change problems such as (being poor controllability).
Three, utility model content
At above-mentioned situation, for overcoming the defective of prior art, the purpose of the utility model is exactly the novel hotblast stove that proposes a kind of no space combustor simple in structure, promptly be referred to as incendiary high-blast-temperature hot-blast stove in a kind of eddy flow heat storage medium that liquidates, effectively solve complex structure, gas mixes inhomogeneous, it is insufficient to burn, contaminate environment, the problem that wastes energy, the technical scheme of its solution is that this hotblast stove monnolithic case is that bowling is spherical, comprises top settling chamber (1), an awl section combustion chamber (2), constitute together can make that air-flow rotates therein, mixing, incendiary space; The gas inlet pipe (7) of symmetric arrangement vertical heat wind furnace axis and air intake duct (8) on settling chamber (1) body of wall are installed the hot-blast outlet pipe (9) with the hotblast stove concentric on settling chamber (1) vault; Gas inlet pipe (7) and air intake duct (8) are changed to the square-section by rounded section before entering settling chamber, and have certain rotary-cut angle; Abundant filling porous regenerator body (3) in the awl section combustion chamber (2), this heat storage is made up of the bigger checker brick of unit heat interchanging area, checkerwork cell be pyramidal structure or abnormally-structured, checkerwork cell diameter less than the groove that communicates is arranged between pitch of holes, Kong Yukong, make the air-flow intercommunication; Below the combustion chamber (2) is regenerator (5), piles up checker brick heat storage (4) in it, is cold air chamber (6) again under it, is connected to smoke discharge tube (11) on the body of wall, cold wind inlet pipe (10); Heat storage is to be placed on the fire grate (12), and it has the pillar (13) that supports fire grate down, is fixed on the rigid base of hotblast stove; If the heat storage checker brick are can be better with special ceramic honeycomb effect structure, and this selection also must join with the structurally associated of main heat storage checker brick (4) under it.
Use this hotblast stove can realize that coal gas and air tentatively mix in settling chamber and eddy flow flows into porous regenerator body in the combustion chamber downwards, finish the high-intensity combustion of thorough mixing and fast and stable, thereby efficiently solve the low-heat value gas combustion instability, intensity of combustion is little, temperature of combustion is low, the not high key issue of hot blast temperature, with between air-flow mutually mixed firing change into air-flow and mix mutually and burning by means of the porous insert surface.Because gas fume after burning enters checker brick heat storage under it through becoming the air-flow that is evenly distributed behind the porous regenerator body, has effectively improved the utilization ratio of the heat-transfer effect and the checker brick of air-flow.Filled the space of most of combustion chamber in view of the porous regenerator body, and combustion processes is carried out in the porous regenerator body, it is the burner and the hotblast stove thereof of other types that its simple structure, the heat exchange effect of mixed firing intensity, air-flow, the lifting of hot blast temperature all can obviously be better than adopting gaseous combustion.
Four, description of drawings
Fig. 1 is a sectional front view of the present utility model.
Fig. 2 is an A-A portion sectional view among the utility model Fig. 1.
Five, embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
By Fig. 1, shown in 2, the utility model is, in steel shell, build by laying bricks or stones by the refractory materials of different size and to form, it is by settling chamber (1), the porous regenerator body (3) of awl section combustion chamber (2) and interior filling thereof, regenerator (5) and in pile up checker brick heat storage (4), cold air chamber (6), constitute the hotblast stove one-piece construction together, be shaped as and adopt the labyrinth of unstressed effect to connect between the cylinder-shaped combustion chamber (2) of the settling chamber (1) of ball top bell cover and the awl section under it, fully load porous regenerator body (3) in the awl section combustion chamber (2), constituting together to make air-flow rotate therein, mix, the incendiary combustion unit, the gas inlet pipe (7) of symmetric arrangement vertical heat wind furnace axis and air intake duct (8) on the vertical body of wall of settling chamber (1), before entering settling chamber (1) space, be changed to the square-section by rounded section, and have certain rotary-cut angle, the air-flow part that enters is liquidated mutually mixes mutually rotatably with part, porous regenerator body (3) is made up of the bigger checker brick of unit heat interchanging area, checkerwork cell is pyramidal structure or polymorphic structure, the checkerwork cell diameter is less than the checkerwork cell spacing, the groove that communicates is arranged between Kong Yukong, make the air-flow intercommunication, the porous checker brick are the porous ceramics brick; Such selection makes and to mix, sufficient combustion, to flow evenly through mixed airflow wherein, below the combustion chamber (2) is cylindric regenerator (5), adopt stressless labyrinth type butt joint, pile up checker brick heat storage (4) on the fire grate (12) in the regenerator (5), because it docks up and down with porous regenerator body (3), forming the unobstructed structure of mutual air-flow, is cold air chamber (6) below the regenerator (5), is connected to smoke discharge tube (11), cold wind inlet pipe (10) on its body of wall; The fire grate (12) of placing heat storage is to be divided into several independently pieces, leave the expansion slit each other, be placed on the crossbeam, support by fire grate pillar stiffener (13), pillar stiffener is fixed on the rigid base of hotblast stove, on settling chamber (1) the vault medullary ray hot-blast outlet pipe (9) is arranged, and with the hotblast stove concentric, be beneficial to hot blast not only by bottom master's heat storage (4), also pass through the porous medium heat storage (3) on top.
The gas inlet pipe (7) of symmetric arrangement vertical heat wind furnace axis and air intake duct (8) on the vertical body of wall of settling chamber (1), their gas channels before entering settling chamber (1) space are pursued by rounded section and become the square-section that certain rotary-cut angle is arranged, the depth-width ratio in its cross section changes between 2～4, and set up in large-scale combustors and separate baffle (14), its number changes between 1～5; Gas channel and settling chamber radially angle are chosen (rotary-cut angle) between 1 °～15 °.
Porous medium heat storage (3) is made up of the bigger special checker brick of unit heat interchanging area, requiring checkerwork cell is the big and little taper hole structure of lower diameter of upper diameter, aperture difference is controlled between 5～10mm, and the taper hole cross section is circular or is polymorphic structure, mostly is plum blossom hole, regular hexagon hole etc.; The ratio of the pitch of holes dative bore dia of checkerwork cell is below 1.5; Adopt ring groove or circular groove to realize the intercommunication of air-flow between checkerwork cell and the checkerwork cell; The porous regenerator body also can be with special resistant to elevated temperatures special-shaped refractory ball, and its diameter is between 50～100mm.
The cylindric regenerator (5) that settling chamber (1) and the combustion chamber (2) under it and combustion chamber (2) are arranged below, all adopt stressless labyrinth type to connect between them, just settling chamber (1) and combustion chamber (2) all by support ring and with its action of gravity on furnace shell, but and between the three in all easy on and off slippages of axis direction.
Pile up checker brick heat storage (4) on the fire grate (12) in the regenerator (5), its structure can be that refractory ball is piled up, the diameter of ball is between φ 40～φ 80mm, can be the checker brick in different apertures, its aperture also can be the ceramic honeycomb structure between φ 15～φ 40mm, be that aperture is a regular hexagon, it selects with hotblast stove size and purposes closely related, also relevant with upper strata porous medium heat storage (3), accomplishes the pitch of holes unanimity.
Hot-blast outlet pipe (9) is to be arranged on settling chamber (1) the vault medullary ray, and with the hotblast stove concentric; In order to reduce of the effect of heating duct internal stress, be connected the bulb-type mode of connection that adopts based on stress between hot-blast outlet pipe (9) and settling chamber (1) to the settling chamber vault.
When using above-mentioned hotblast stove, air enters settling chamber (1) by inlet pipe (8) with low cyclone mode to coal gas by inlet pipe (7), realizing preliminary the mixing sweeping away mutually, and enter downwards rapidly in the porous medium heat storage (3) that is filled in the combustion chamber (2), two kinds of air-flows realize that by means of the competent surface in contact of porous regenerator body thorough mixing, preheating are caught fire, perfect combustion; Distributing with uniform airflow afterwards enters in the checker brick heat storage (4) of its underpart regenerator, enters cold air chamber (6) after the heat exchange of full and uniform ground, is entered the rear portion heat-exchanger rig of hotblast stove or is directly entered flue by smoke discharge tube (11).Combustion processes enters the air-supply process after finishing; High pressure cold wind enters from cold-air duct (10), flows into heat storage checker brick (4) after cold air chamber (6), in the combustion chamber of flowing through again, flow out from top hot-blast outlet pipe (9).In view of porous regenerator body (3) is the part of combustion unit, temperature is near temperature of combustion, so hot blast temperature only can be more near temperature of combustion, makes the high hot blast temperature of acquisition under low-heat value gas combustion.Choose flow velocity and the angle of rotary-cut, the relative height of settling chamber and the structural shape and height of diameter, porous medium heat storage and main heat storage checker brick of suitable coal gas and air, to realize the rapid thorough mixing and the perfect combustion in the porous regenerator body of coal gas and air; Reach the purpose that improves intensity of combustion and temperature of combustion and effectively control combustion processes.Guarantee that simultaneously the air-supply process reaches stable and lasting effect of carrying high wind-warm syndrome.
By above-mentioned situation as can be seen, the utility model is, structurally jumps out the pattern of air-flow mixed firing in the existing combustion chamber, utilizes the principle of coal gas and air mixed firing in solid porous medium, and the combustion processes of coal gas is finished in porous medium.This must cause that coal gas and air mixed are more all even more fully, preheated burning more rapidly and fully, also make the flue gas flow field that enters heat storage more uniform and stable, and be not subjected to the influence of load change.Simultaneously, the structure of burner is greatly simplified because of the special construction that has removed complicated burner nozzle, and the cost of manufacture of hotblast stove also can obviously descend.So just in hotblast stove, realized appropriately and the effectively combination of the heat transfer-heat-accumulating process of high-intensity combustion process and uniform high-efficiency.For blast funnace hot blast stove and since in the combustion chamber filling the porous regenerator medium, its pyritous accumulation of heat helps under the prerequisite of low-heat value gas combustion temperature not high (about about 1400 ℃) realizing stable high hot blast temperature (1350 ℃).Because temperature of combustion can be controlled at 1400 ℃ of a large amount of generations that just can not cause oxynitride up and down, helps the intergranular corrosion that reduces environmental pollution and prevent furnace shell.This also adopts one of free-revving engine of porous regenerator medium burner just.
The utility model proposes a kind of novel hotblast stove of combustion chamber filling porous regenerator medium simple in structure, directly the entering to liquidate after the settling chamber of its coal gas and slightly rotary-cut angle of air tentatively mixed, enter downwards thereafter continue in the porous regenerator body that is filled in the combustion chamber mixing, preheating and fire burns.Because a large amount of contact surface (its unit volume exchange area is at 80～120 square metres) of porous medium makes said process to finish fast and fully, and the effect of all pressing by means of the porous medium mixed flow simultaneously and form the even flue gas flow field that enters checker brick downwards.Because the checker brick in the regenerator are extending naturally of porous regenerator body, wherein heat transfer also can evenly be carried out effectively with heat-accumulating process, until flow into till the cold air chamber.Obviously, in the finite space, utilize the porous material feature to realize quick premix, preheating and burning, just can effectively reduce excess air ratio, improve temperature of combustion with intensity of combustion and then greatly simplify burner structure and alleviate burner weight.Because combustion processes is carried out in the porous regenerator body, its temperature is more near temperature of combustion, thereby hot blast temperature also can be more near temperature of combustion in the air-supply process.This just realizes high hot blast temperature under lower combustion temp.Simultaneously, the remaining accumulation of heat of porous regenerator body after air-supply finishes also can provide hot environment that combustion processes is strengthened for the gas combustion process that is right after.
In a word, the ingenious application porous regenerator of the utility model body adds air blast and mixes, promotes chemical reaction, regulates the characteristics that air-flow distributes, with simple and rational structure, effectively improved mixed effect between burner coal gas and air, overcome the gas compartment and mix the key issues such as inequality, incomplete combustion, flame instability, combustion intensity difficultly improve, the combustion-gas flow VELOCITY DISTRIBUTION is inhomogeneous, air flow structure is uncontrollable, effectively guaranteed hot-blast stove, industrial furnace etc. can be efficient, high temperature, average rate, high-heat strength and the operation of safety and stablization ground; Then realize good economic benefit and the social benefit of fuel saving, saving investment, reduction EGT and discharge capacity, environmental contamination reduction.
Claims (6)
1. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates, comprise steel shell, regenerator, settling chamber, air intake duct, gas inlet pipe, it is characterized in that, in steel shell, the settling chamber (1) of building by laying bricks or stones by the refractory materials of different size, the porous regenerator body (3) of awl section combustion chamber (2) and filling in it, pile up checker brick heat storage (4) in regenerator (5) and its, cold air chamber (6), constitute the hotblast stove one-piece construction together, the settling chamber (1) that is shaped as ball top bell cover is connected for the labyrinth of unstressed effect with the cylinder-shaped combustion chamber (2) of the awl section under it, filling porous regenerator body (3) in the awl section combustion chamber (2) constitutes air-flow and rotates therein, mix, the incendiary combustion unit; The gas inlet pipe (7) of symmetric arrangement vertical heat wind furnace axis and air intake duct (8) on the vertical body of wall of settling chamber (1), gas inlet pipe (7) and air intake duct (8) cross section are rounded, and enter settling chamber (1) preceding by rounded section by becoming the square-section that certain rotary-cut angle is arranged; Porous regenerator body (3) is made up of checker brick, the cylindric regenerator (5) that unstressed labyrinth type butt joint is arranged below the combustion chamber (2), pile up checker brick heat storage (4) on the fire grate (12) in the regenerator (5), dock up and down, constitute the unobstructed structure of mutual air-flow with porous regenerator body (3); Cold air chamber (6) is arranged below the regenerator, be connected to smoke discharge tube (11), cold wind inlet pipe (10) on its body of wall; The fire grate (12) of placing heat storage is several independently pieces, the expansion slit is arranged each other, and place on the crossbeam, support by fire grate pillar stiffener (13), the fire grate pillar stiffener is fixed on the rigid base of hotblast stove, on settling chamber (1) the vault medullary ray hot-blast outlet pipe (9) is arranged, and with the hotblast stove concentric.
2. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates according to claim 1, it is characterized in that, said gas inlet pipe (7) and air intake duct (8) enter settling chamber (1) preceding by rounded section by becoming the square-section that certain rotary-cut angle is arranged, the depth-width ratio in its cross section is 2～4, have 1-3 to separate baffle (14) in the burner, gas channel and settling chamber radially rotary-cut angle are 1 °～15 °.
3. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates according to claim 1, it is characterized in that, its checkerwork cell of said porous regenerator body (3) is the big and little taper hole structure of lower diameter of upper diameter, aperture difference is 5～10mm, and pass is circular or plum blossom hole shape or regular hexagon; The ratio of the pitch of holes dative bore dia of checkerwork cell is below 1.5; Ring groove or circular groove are arranged on its end face, and the porous regenerator body also can be resistant to elevated temperatures refractory ball, and its diameter is 50～100mm;
4. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates according to claim 1, it is characterized in that, the cylindric regenerator (5) that said settling chamber (1) and the combustion chamber (2) under it and combustion chamber (2) are arranged below is stressless labyrinth type butt joint between them.
5. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates according to claim 1, it is characterized in that, the heat storage of piling up on the fire grate (12) in the said regenerator (5) (4) is piled up for refractory ball, the diameter of ball is φ 40～φ 80mm, or the checker brick in different apertures, its aperture is at φ 15～φ 40mm.
6. incendiary high-blast-temperature hot-blast stove in the eddy flow heat storage medium that liquidates according to claim 1 is characterized in that, is connected for bulb-type between said hot-blast outlet pipe (9) and settling chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202676317U CN201770720U (en) | 2010-07-22 | 2010-07-22 | Hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202676317U CN201770720U (en) | 2010-07-22 | 2010-07-22 | Hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove |
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| CN201770720U true CN201770720U (en) | 2011-03-23 |
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| CN2010202676317U Expired - Fee Related CN201770720U (en) | 2010-07-22 | 2010-07-22 | Hedging cyclone heat storage medium central-combustion high blast temperature hot blast stove |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906496A (en) * | 2010-07-22 | 2010-12-08 | 郑州豫兴耐火材料有限公司 | High-blast-temperature hot-blast stove burnt in convection swirling heat storage medium |
| CN102277460A (en) * | 2011-08-18 | 2011-12-14 | 陈维汉 | Hot blast furnace for preheating and combusting gas-air jet mixture in porous body |
| CN103162529A (en) * | 2011-12-15 | 2013-06-19 | 贵阳铝镁设计研究院有限公司 | Ahs deposition chamber grid type partition structure |
| CN109059013A (en) * | 2018-08-28 | 2018-12-21 | 武汉凯迪电力环保有限公司 | A kind of accumulation of heat incinerator import and export mix |
| CN111795499A (en) * | 2020-07-14 | 2020-10-20 | 郑州釜鼎热能技术有限公司 | Hot blast stove with high-speed hedging rotational flow adjustable premixing heat accumulator backflow high-temperature combustion |
-
2010
- 2010-07-22 CN CN2010202676317U patent/CN201770720U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906496A (en) * | 2010-07-22 | 2010-12-08 | 郑州豫兴耐火材料有限公司 | High-blast-temperature hot-blast stove burnt in convection swirling heat storage medium |
| CN102277460A (en) * | 2011-08-18 | 2011-12-14 | 陈维汉 | Hot blast furnace for preheating and combusting gas-air jet mixture in porous body |
| CN102277460B (en) * | 2011-08-18 | 2012-11-21 | 陈维汉 | Hot blast furnace for preheating and combusting gas-air jet mixture in porous body |
| CN103162529A (en) * | 2011-12-15 | 2013-06-19 | 贵阳铝镁设计研究院有限公司 | Ahs deposition chamber grid type partition structure |
| CN103162529B (en) * | 2011-12-15 | 2016-02-24 | 贵阳铝镁设计研究院有限公司 | Heavy grey room grid type curtain wall structure |
| CN109059013A (en) * | 2018-08-28 | 2018-12-21 | 武汉凯迪电力环保有限公司 | A kind of accumulation of heat incinerator import and export mix |
| CN111795499A (en) * | 2020-07-14 | 2020-10-20 | 郑州釜鼎热能技术有限公司 | Hot blast stove with high-speed hedging rotational flow adjustable premixing heat accumulator backflow high-temperature combustion |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110323 Termination date: 20120722 |