CN116004934A - Catenary top-combustion hot-blast stove of high-power long-life combination body - Google Patents
Catenary top-combustion hot-blast stove of high-power long-life combination body Download PDFInfo
- Publication number
- CN116004934A CN116004934A CN202310104284.8A CN202310104284A CN116004934A CN 116004934 A CN116004934 A CN 116004934A CN 202310104284 A CN202310104284 A CN 202310104284A CN 116004934 A CN116004934 A CN 116004934A
- Authority
- CN
- China
- Prior art keywords
- gas
- air
- hot blast
- chamber
- blast stove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 66
- 239000007789 gas Substances 0.000 claims description 87
- 238000009826 distribution Methods 0.000 claims description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 239000011449 brick Substances 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003034 coal gas Substances 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000005338 heat storage Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims 5
- 238000010304 firing Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 10
- 238000005507 spraying Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Furnace Details (AREA)
Abstract
The invention relates to a high-power long-life combined catenary top combustion type hot blast stove, which can further improve the power of the traditional catenary top combustion type hot blast stove and prolong the service life of the hot blast stove.
Description
Technical Field
The invention relates to a hot blast stove, in particular to a catenary top-combustion type hot blast stove with a high-power long-life combination body.
Background
The hot air outlet of the Gao Luding combustion type hot air furnace is a straight section outlet of the hot air furnace so far, and is easy to damage due to the action of pressure (combustion period), tensile force (air supply period) and thermal expansion force; and the brick quantity used at the outlet of the straight section of the hot blast stove is larger, so that the capital investment is increased.
In the internal combustion, external combustion and top combustion type hot blast stoves, it is currently accepted that the top combustion type hot blast stove has the advantages of least investment, most uniform heating and most stable structure. Among top-fired stoves, there are two main categories, namely, the Karsch stove represented by the Karsch Lu Jinxiao cap, and the Yuxing stove represented by the Yuxing catenary large dome. The burner of the Karsch hot-blast stove is arranged on the stove wall of the small cap, and is limited by small diameter, and the jet orifice of the Karsch hot-blast stove can be divided into two layers, three layers and four layers along with the increase of the air quantity entering the stove, so that gas and air are respectively jetted in a rotational flow way; the burner of the Yuxing hot-blast stove is arranged at the lower part of the large arch crown of the catenary, and the diameter of the burner is not limited because of the arrangement of the outlets, the gas and the air are respectively arranged along the outer circumference of the inner wall in a staggered way and are ejected upwards, and the burner goes upwards to the top of the catenary to turn back downwards along the catenary to form vortex. The coal gas and air of the Karsch hot blast stove are sprayed in layers, so that the mixture is not good, the combustion port is large, and the long-flame combustion is realized; the exhaust port of the Karsch hot blast stove is limited by arrangement, so that the power of a burner is low; the karst hot blast stove is characterized in that the karst hot blast stove is sprayed by rotational flow, and the edge air flow is large when the flow speed is large and is small when the flow speed is small due to the action of centrifugal force, so that the air flow is unevenly distributed. The gas and the air of the Yuxing hot blast stove are respectively sprayed upwards in a staggered way, but a premixing chamber is not arranged, and the gas and the air are mixed after being sprayed, and do not belong to short flame combustion; because the burner of the Yuxing hot-blast stove is arranged at the bottom of the catenary large vault straight wall section, the gas and the air are respectively arranged along the outer circumference of the inner wall, so that the burner has high power; however, the brick quantity is large, simultaneously, because vault and combustor are built as an organic whole, the whole straight section and vault of combustor bridge brick upper portion bearing, once damage major repair in the burning period, must dismantle straight section and vault of upper portion just can maintain, on the other hand, because combustor nozzle plane is in one horizontal plane for regenerator wall plane and regenerator bed surface, the burner circuit is damaged, the major repair of wearing the hole just must demolish corresponding regenerator check brick, the maintenance point degree of difficulty and engineering time have been greatly increased, and the nozzle damage influences the stability of the biggest straight section wall and vault structure of upper portion, because the high distance of nozzle structure to vault is too big, the gas and the air combustion products that spout on can't reach vault upper portion space, cause the heat dissipation loss big, vault burning and air supply difference is big, it is in order to solve in order to further improve power to threaten vault structure's stability and so on, reduce consumption, lengthen hot-blast furnace life, therefore, chain overhead combustion formula improvement and innovation are the urgent need to solve the technical problem at present.
Disclosure of Invention
Aiming at the situation, the invention aims to solve the defects of the prior art and provide the catenary top-combustion type hot blast stove with a high power and long service life combination, which can further improve the power of the prior catenary top-combustion type hot blast stove and prolong the service life of the hot blast stove.
The invention solves the technical scheme that the furnace comprises a furnace body, the furnace body comprises a vault, a combustion chamber, a regenerator and a cold air chamber at the bottom of the furnace body from top to bottom, the combustion chamber is of an integrated structure formed by the inner wall of the vault at the upper part and the inner wall of the straight wall at the lower part, a gas equipartition chamber is arranged in the straight wall, an equipartition air-jet transverse ventilation header communicated with the burner is arranged on the wall of the gas equipartition chamber, the equipartition air-jet transverse ventilation header is connected with a gas distribution header of the burner correspondingly arranged in the gas equipartition chamber, a burner air equipartition chamber communicated with the burner is connected on the outer wall of the regenerator below the burner, a gas inlet pipeline and a hot air outlet communicated with the combustion chamber are arranged on the outer wall of the straight wall of the combustion chamber, the gas equipartition chamber is communicated with an air-gas mixing chamber through the gas distribution header, an air inlet pipeline is arranged on the outer wall of the burner air equipartition chamber, the air inlet pipeline is communicated with an air ring arranged in the wall of the burner air chamber, and the air ring is communicated with the air mixing chamber through the air distribution header.
The invention has novel and unique structural design, is energy-saving and environment-friendly, can further improve the power of the traditional catenary top-combustion type hot blast stove, prolongs the service life of the hot blast stove, reduces consumption and prolongs the service life of the hot blast stove, is innovation of the catenary top-combustion type hot blast stove, and has good economic and social benefits.
Drawings
Fig. 1 is a front view of a cross-section of the structure of the present invention.
Fig. 2 is a diagram showing the connection relationship between the components of the present invention.
FIG. 3 isbase:Sub>A schematic view of the sectional structure of the A-A direction of FIG. 1 according to the present invention.
FIG. 4 is a schematic view of the B-B cross-sectional structure of FIG. 1 according to the present invention.
FIG. 5 is a schematic view of the cross-sectional structure of the C-C direction of FIG. 1 according to the present invention.
FIG. 6 is a schematic view of the D-D cross-sectional structure of FIG. 1 according to the present invention.
FIG. 7 shows a mixed combustion mode example 1 according to the present invention.
FIG. 8 shows a hybrid combustion embodiment example 2 of the present invention.
FIG. 9 shows a mixed combustion mode example 3 according to the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
The invention is given by figures 1-9, the furnace comprises a furnace body 1, the furnace body 1 is composed of a vault 2, a combustion chamber 3, a regenerator 4 and a cold air chamber 5 at the bottom of the furnace body from top to bottom, the combustion chamber 3 is an integral structure composed of the vault inner wall at the upper part and the straight wall inner wall at the lower part, a gas sharing chamber 10 is arranged in the straight wall, a sharing jet transverse ventilating header 17 communicated with the burner is arranged on the wall of the gas sharing chamber 10, the sharing jet transverse ventilating header 17 is connected with a gas distribution header 11 of the burner correspondingly arranged in the gas sharing chamber 10, a burner air sharing chamber 7 communicated with the burner 6 is connected on the outer wall of the regenerator 4 below the burner 6, a gas inlet pipeline 8 and a hot air outlet 9 communicated with the combustion chamber 3 are arranged on the outer wall of the straight wall of the combustion chamber 3, a gas inlet pipeline 10 is arranged in the straight wall, the gas sharing chamber 10 is communicated with an air mixing chamber 12 through the gas distribution header 11, an air inlet pipeline 13 is arranged on the outer wall of the burner air sharing chamber 7, the air inlet pipeline 13 is communicated with an air distribution ring 14 of the burner air sharing chamber 7 through the air distribution ring 14, and the air inlet pipeline 13 is communicated with the air mixing chamber 12 through the air distribution ring 14.
In order to ensure the use effect, the nozzle 16 is a flat nozzle, and the nozzles are staggered at the inclination angles of 15 degrees, 25 degrees and 35 degrees, so that the purposes of uniform and rapid mixing of opposite-angle cross mixing and shorter flame are achieved, the flat nozzle has good mixing effect, coal gas and air are fully cut, more thinner flows are formed, the air temperature is high, nitrogen oxides are lower, the mixed combustion gas of the coal gas and the air can be sprayed to the top part of the vault, the mixed combustion space is effectively utilized, and the mixing is promoted.
The outlet of the nozzle 16 is provided with an inclined slope with an angle of 30-45 ℃ and has the main function of cleaning vault falling objects to roll down rapidly so as to avoid blocking nozzle holes by particles and broken bricks.
The nozzle 16 is made of explosion-proof high-temperature-resistant thermal shock-resistant prefabricated ceramic, so that the service life of the nozzle is ensured.
The hot air outlet is made of high-aluminum materials.
The air distribution header 15 is arranged at the top of the air inlet pipe 13 and can be directly connected with the air-gas mixing chamber 12 vertically.
The joints of the gas distribution header 11 and the air distribution header 15 and the air-gas mixing chamber 12 are obliquely connected at 25 degrees.
The joint of the gas distribution header 11 and the air-gas mixing chamber 12 is in 25-degree inclined connection, and the air distribution header 15 is vertically connected with the air-gas mixing chamber 12.
The included angle of the gas distribution header 11 and the air distribution header 15 is 50 degrees.
The gas equipartition chamber 10 and the gas distribution header 11 are arranged in parallel, the inner wall is an annular partition wall, which is also a supporting vault large wall, and the header wall is separated, meanwhile, the part is built by adopting high-strength corundum mullite bricks locally, and the partition wall supporting vault can not be damaged even if the nozzle header is damaged due to misoperation.
The upper section of the hot air outlet is supported by adopting double-pipe rotary bricks, and the first annular brick of the hot air outlet adopts an R arc angle, so that the hot air outlet brick is prevented from being damaged under the condition of high-speed flow rate.
The arch 2 is a catenary arch.
The burner 6 is a flow equalization burner.
The central checker bricks of the bed surface of the checker bricks in the heat storage chamber are stacked in a trapezoid shape, so that the distribution of a flue gas flow field is regulated, and the utilization rate of the checker bricks is improved.
The nitrogen purging pipe is arranged above the gas inlet pipeline 8 in parallel and surrounds the furnace body for a circle, the nitrogen purging pipe is connected with a plurality of nitrogen branch pipes, and the nitrogen branch pipes are directly communicated with the top of the nitrogen purging pipe, so that residual gas on the upper part can be replaced by inert gas during purging, and the inert gas is replaced uniformly due to purging, so that nitrogen can be saved, and the probability of influencing the air temperature in the hot blast stove due to the fact that little cold air enters the hot blast stove is reduced.
The cold air chamber 5 is communicated with a cold air inlet and a flue gas outlet which are arranged on the outer wall of the furnace body.
The height of the arch and the height of the bed surface of the regenerator are below 8000 mm.
The thickness between the lower straight section of the dome and the gas distribution header 11 is greater than 400 mm.
The hot air outlet is arranged on the gas inlet pipeline section and penetrates through the gas pipeline and the inner partition wall and the outer partition wall, and the hot air outlet section is made of high-aluminum materials with negligible volume-stable expansion quantity and is located on the supporting plate, so that no expansion stress is stable and the hot air outlet section is not damaged; the upper section of the hot air outlet is supported by double-pipe rotary bricks and has a catenary vault structure with compressive stress only, so that the hot air outlet is not damaged, a burner is not arranged at part of the hot air outlet, a large wall recess at part of the hot air outlet is leveled with a vault partition wall, the resistance of air supply air flow is reduced, the first annular brick of the hot air outlet adopts an R arc angle, the hot air outlet brick is protected from being damaged under the condition of high-speed flow rate, the thickness between the straight section of the vault lower part and the gas distribution header 11 is thickened, the thickness is more than 400 mm, any design before the thickness is 200-230 mm, and the damage of knocking to the explosion force at the gas inlets of the gas distribution header 11 and the large wall of the straight section of the support vault are resisted; because the height of the arch crown and the height of the bed surface of the regenerator are reduced from 10000 mm before to below 8000 mm, and the bed surface has no high-risk area, weak links of manholes are banned and arranged at the upper end of the arch crown and the short pipe of the hot air outlet, the upper end of the arch crown is provided with large flange holes, so that the construction maintenance and the person entering and exiting are facilitated, the flange is opened when in use, the soft ladder is used for entering and exiting, the manholes arranged at the short pipe of the hot air outlet are maintenance manholes, the nozzle is a high-temperature-resistant thermal shock-resistant ceramic independent burner nozzle, the replacement is convenient, the high-temperature-resistant thermal shock-resistant ceramic body of the nozzle 15 and a slope can avoid the deposition and the caused blockage of low-melting dust, the air distribution chamber of the burner ensures that the distribution airflow enters the nozzle uniformly and evenly, the center of the grid brick bed surface in the regenerator is piled up in a trapezoid manner, the distribution of the flue gas flow field is adjusted, and the utilization rate of the grid bricks is improved; the arrangement of the air ring channel can lead the air to fully fill the whole air ring channel, so as to achieve uniform air distribution, the vault and the gas inlet pipeline are integrated and independently supported on the supporting plate of the upper furnace shell, the gas sharing chamber and the gas air distribution header pipe are integrated and independently supported and welded on the supporting plate in the middle of the furnace shell, the regenerator large wall and the cold air chamber are integrated and independently supported on the furnace bottom shell, the vault gas sharing chamber is in sealing connection with the air ring channel and the header pipe by adopting sliding joints, the air ring channel, the header pipe and the regenerator large wall adopt a sealing and labyrinth combined connection structure, the stress reasonable material-resistant structure only has a stress-free structure such as compressive stress without shearing stress expansion force, the furnace shell is simpler and only has a combined structure without any complex structure and with reasonable stress, and the service life of the structure is more than 50 years; the nozzle structures with different inclination angles of the rings are arranged, so that the main purpose of the arrangement is to utilize the coal gas spraying momentum to be larger than the air spraying momentum to mix the coal gas, so that a strong swirling flow effect is formed on the top of a vault, a sufficient mixing combustion space, low nitrogen power and a high-power and uniform mixing combustion nozzle are provided, combustion products are completely combusted before entering the checker brick bed surface, and a hot air outlet can also be designed on the top of the vault.
The main characteristic of the improvement of the invention is that: the catenary vault and the gas sharing chamber are integrally arranged at the peripheral part of the burner, meanwhile, the hot air outlet is also arranged above the wall body of the gas sharing chamber at the straight section of the vault, the arrangement ensures that the structure of the gas sharing chamber is independent and stable, the vault structure is correspondingly and stably stable, the part is directly supported on the supporting plate of the furnace shell and separated from the lower part structure, and the damage of accumulated expansion of the refractory gas in the thermal state is avoided (see the upper vault part of the split diagram of each part of the figure 2). The burner is independent and integrated, the burner is directly exposed at the position of the combustion chamber, the thickness of a wall body of the gas uniform chamber is increased while the position is independent, the explosion intensity of knocking or misoperation explosion is increased, the nozzle is optimized from the past plane shape to the slope shape with an angle, slag erosion and dust accumulation formed by gas dust are prevented from covering the nozzle structure, the burner wall body is easily and directly removed for replacement when the burner is damaged due to the fact that the burner is exposed at the position of the combustion chamber and the large wall of the regenerator, construction is convenient, man-hour is reduced, the nozzle position of the burner adopts an anti-explosion pouring body, the upward spraying angle of the nozzle is multi-angle light radiation upward three-hole spraying, the upward spraying width of the combustion products can be adjusted in a large range, the space of the combustion chamber is fully and effectively utilized, the height of the furnace body is reduced, and the heat dissipation loss is reduced (see the split diagram of the upper burner position in the split diagram of each position of fig. 2, fig. 3 and fig. 4); and thirdly, the air sharing chamber and the large wall of the regenerator are built in parallel to have enough thickness, so that the air sharing chamber is kept at a safe temperature gradient during combustion and air supply, and the service life of the air sharing chamber is prolonged (see the split diagram of each part in the middle part of the split diagram of the figure 2, and the split diagrams of the parts in the middle part of the split diagram of the figure 5 and the figure 6). Fourthly, the large wall of the regenerator and the large wall of the cold air chamber are directly built at the bottom of the furnace shell (see the split diagram of each part of the drawing 2, the regenerator and cold air are the split diagrams of the parts), thus the upper and lower four parts are formed and combined, each part is independently supported, free in expansion and contraction, complementarily interfered, stable in structure, high in air temperature, high in combustion power, and the nozzles are used for spraying flue gas products for covering at multiple angles, and are arranged in an ultra-narrow flat shape by taking the center of the combustion chamber as radiation, so that the nozzles are more densely arranged, the gas and air spraying flow and the combustion power are increased, the gas and air are more uniformly mixed, the combustion is more complete, the combustion products are sprayed upwards at multiple angles through the combustion chamber, the efficiency is high, the nitrogen oxides are low, and the structural life is synchronous with the service life of the hot blast furnace body.
Regarding the nozzle structure; FIG. 7 shows a nozzle configuration with independent combination of gas and air, uniform gas and air pressure, low deviation, uniform mixing, complete combustion, and one of the chamber burner configurations; compared with the nozzle structure of fig. 7, fig. 8 is the same as the nozzle structure of independent combination of gas and air, the gas and air pressure and flow are matched uniformly, the deviation is not large, the mixture is uniform, and the combustion is complete, the difference is that the air nozzle is vertical upward injection, the gas nozzle is inclined injection with an angle, the arrangement of the nozzle increases the swirl strength when the sprayed combustion products enter the combustion chamber space, the special characteristic effect of the gas momentum flow is fully exerted, the swirl increase is that the flue gas flow field tends to be more uniform, the utilization rate of checker bricks is favorably improved, the thermal efficiency of the hot blast stove is improved, and the burner is two of the nozzle structures; the nozzle structure of fig. 9 adopts the mode of distributing gas and air left and right, so that the gas and the air are fully and effectively subdivided, the radial flat and narrow type nozzles are arranged, the number of the nozzles is increased, the combustion power of the nozzles is increased, the flat and narrow staggered mixing is that the gas and the air reach uniform mixing in advance, the combustion is complete, and the requirement of gas is saved, but the difference is that the arrangement is mutually interfered when the combustion products are sprayed into the space of a combustion chamber, so that the uneven flue gas flow field is caused, therefore, the nozzle structure adopts the normal cyclone structure of effective complementary interference in the process of upwards spraying the gas and the air combustion products into the space of the combustion chamber because the geometry of each group of branched gas and air branch pipes is different, and the flow is different, so that the flow is regulated.
The invention lifts the gas inlet pipeline above the bed surface of the checker brick heat accumulator, which is used for avoiding damage and hole-penetrating gas short circuit caused by local knocking of the gas distribution header and the corresponding loop wall due to illegal nitrogen purging operation, the checker brick heat accumulator can be maintained and salvaged without dismantling during major repair, the gas inlet pipeline and the air inlet pipeline are respectively and independently supported and welded on the supporting plate of the furnace body, the structure is stable and long-lived, only the stress-free structure such as compressive stress, shearing stress, expansion force and the like is avoided, the bridge-crossing isolation bricks of the upper loop and the lower loop are damaged, the burner is scrapped, the power is high, the service life is long, and the invention is innovation on the catenary top-combustion hot blast stove, and has good economic and social benefits.
It is noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited thereto, and that any person skilled in the art can make modifications and equivalents within the scope of the present invention without departing from the scope of the present invention.
Claims (10)
1. The catenary top combustion type hot blast stove of the high-power long-life combination comprises a stove body (1), the stove body (1) is composed of a vault (2), a combustion chamber (3), a regenerator (4) and a cold air chamber (5) at the bottom of the stove body from top to bottom, and is characterized in that the combustion chamber (3) is of an integrated structure composed of the inner wall of the vault at the upper part and the inner wall of a straight-section wall at the lower part, a gas uniform distribution chamber (10) is arranged in the straight-section wall, a uniform jet transverse ventilation header (17) communicated with the burner is arranged on the wall of the gas uniform distribution chamber (10), the uniform jet transverse ventilation header (17) is connected with a gas distribution header (11) of the burner correspondingly arranged in the gas uniform distribution chamber (10), a burner air uniform distribution chamber (7) communicated with the burner (6) is connected on the outer wall of the regenerator (4) below the burner (6), a gas inlet pipeline (8) and a hot air outlet (9) communicated with the burner (3) are arranged on the outer wall of the straight-section wall of the combustion chamber (3), a gas inlet pipeline (8) is arranged in the straight-section wall, the gas uniform distribution header (10) is communicated with the gas inlet pipeline (10) and the gas inlet (10) is uniformly distributed with the gas inlet (13), the air inlet pipeline (13) is communicated with an air loop (14) arranged in the wall of the combustor air equipartition chamber (7), the air loop (14) is communicated with the air-gas mixing chamber (12) through an air distribution header (15), and the air-gas mixing chamber (12) is communicated with the nozzle (16).
2. The high-power long-life combined catenary top-combustion hot blast stove according to claim 1, characterized in that the nozzle (16) is a thin flat nozzle, and the nozzles are staggered with the vertical inclination angles of 15 degrees, 25 degrees and 35 degrees according to the center line of the three rings, so that the cross mixing of opposite angles is more uniform and faster, the flame is shorter, the thin flat nozzle has good mixing effect, coal gas and air are fully cut, more uniform mixed thin-stream is formed, the air temperature is high, the nitrogen oxide is lower, the mixed combustion gas of the coal gas and the air can be sprayed to the top part of the vault, the mixed combustion space is effectively utilized, and the mixing is promoted.
3. The high-power long-life combined catenary top-firing hot blast stove according to claim 1, characterized in that the nozzle (16) is made of explosion-proof high-temperature-resistant thermal shock-resistant prefabricated ceramic, and the hot blast outlet is made of high-aluminum material.
4. The high-power long-life combined catenary top-combustion hot blast stove according to claim 1, characterized in that the joints of the gas distribution header (11) and the air distribution header (15) and the air-gas mixing chamber (12) are in 25-degree inclined connection.
5. The high-power long-life combined catenary top-combustion hot blast stove according to claim 1, characterized in that the connection of the gas distribution header (11) and the air-gas mixing chamber (12) is in 25-degree inclined connection, and the air distribution header (15) is vertically connected with the air-gas mixing chamber (12).
6. The high-power long-life combined catenary top-firing hot blast stove according to claim 1, characterized in that the included angle between the gas distribution header (11) and the air distribution header (15) is 50 °.
7. The high-power long-life combined catenary top-fired hot blast stove according to claim 1, wherein the upper section of the hot blast outlet is supported by double-tube rotary bricks, the first annular bricks of the hot blast outlet are in R arc angles, the central checker bricks of the bed surface of the checker bricks in the heat storage chamber are stacked in a trapezoid shape, the distribution of flue gas flow fields is regulated, and the utilization rate of the checker bricks is improved.
8. The high-power long-life combined catenary top-combustion hot blast stove according to claim 1, wherein the outlet of the nozzle (16) is provided with an inclined slope with an angle of 30-45 ℃, and the main function is to clean vault and fall off and roll off rapidly, so as to avoid blocking nozzle holes by particles and broken bricks.
9. The high-power long-life combined catenary top-firing hot blast stove according to claim 1, characterized in that the vault (2) is a catenary vault and the burner (6) is a flow equalizing burner.
10. The catenary top-fired hot blast stove with the high power and long service life combined body according to claim 1, wherein a nitrogen purging pipe which surrounds a circle of a stove body is arranged above the gas inlet pipeline (8) in parallel, a plurality of nitrogen branch pipes are connected to the nitrogen purging pipe, and the nitrogen branch pipes are directly connected to the top of the nitrogen purging pipe, so that residual gas on the upper part can be replaced by inert gas during purging, and the inert gas is replaced uniformly due to purging, so that nitrogen is saved, and the probability of influencing the air temperature of the hot blast stove due to the fact that less cold air enters the hot blast stove is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104284.8A CN116004934A (en) | 2023-02-13 | 2023-02-13 | Catenary top-combustion hot-blast stove of high-power long-life combination body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104284.8A CN116004934A (en) | 2023-02-13 | 2023-02-13 | Catenary top-combustion hot-blast stove of high-power long-life combination body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116004934A true CN116004934A (en) | 2023-04-25 |
Family
ID=86035654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310104284.8A Pending CN116004934A (en) | 2023-02-13 | 2023-02-13 | Catenary top-combustion hot-blast stove of high-power long-life combination body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116004934A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381786A (en) * | 2008-10-27 | 2009-03-11 | 郑州豫兴耐火材料有限公司 | Top burning hot blast stove using annular airflow spray upward with premixing combustion and reflux heating |
| CN201245671Y (en) * | 2008-09-05 | 2009-05-27 | 郑州豫兴耐火材料有限公司 | Novel catenary dome ceramic combusting device hot-air furnace |
| CN201817505U (en) * | 2010-10-27 | 2011-05-04 | 郑州豫兴耐火材料有限公司 | Low type high-wind temperature top combustion hot blast stove |
| US20180340237A1 (en) * | 2015-11-30 | 2018-11-29 | Paul Wurth Refractory & Engineering Gmbh | Top combustion stove |
| CN114574646A (en) * | 2022-03-15 | 2022-06-03 | 郑州豫兴热风炉科技有限公司 | Multi-rotational-flow column-flow low-nitrogen top-combustion type burner for hot blast stove |
| CN219218066U (en) * | 2023-02-13 | 2023-06-20 | 刘力铭 | Catenary top-combustion hot-blast stove of high-power long-life combination body |
-
2023
- 2023-02-13 CN CN202310104284.8A patent/CN116004934A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201245671Y (en) * | 2008-09-05 | 2009-05-27 | 郑州豫兴耐火材料有限公司 | Novel catenary dome ceramic combusting device hot-air furnace |
| CN101381786A (en) * | 2008-10-27 | 2009-03-11 | 郑州豫兴耐火材料有限公司 | Top burning hot blast stove using annular airflow spray upward with premixing combustion and reflux heating |
| CN201817505U (en) * | 2010-10-27 | 2011-05-04 | 郑州豫兴耐火材料有限公司 | Low type high-wind temperature top combustion hot blast stove |
| US20180340237A1 (en) * | 2015-11-30 | 2018-11-29 | Paul Wurth Refractory & Engineering Gmbh | Top combustion stove |
| CN114574646A (en) * | 2022-03-15 | 2022-06-03 | 郑州豫兴热风炉科技有限公司 | Multi-rotational-flow column-flow low-nitrogen top-combustion type burner for hot blast stove |
| CN219218066U (en) * | 2023-02-13 | 2023-06-20 | 刘力铭 | Catenary top-combustion hot-blast stove of high-power long-life combination body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108603660B (en) | Top combustion hot blast stove | |
| CN201288198Y (en) | Multi-contact circle rotational flow top burning hot blast stove | |
| CN219218066U (en) | Catenary top-combustion hot-blast stove of high-power long-life combination body | |
| CN201817505U (en) | Low type high-wind temperature top combustion hot blast stove | |
| CN209495326U (en) | A kind of top combustion stove of double air intake swirl injection burners | |
| CN114574646B (en) | Multi-rotational-flow column-flow low-nitrogen top-combustion type burner for hot blast stove | |
| CN101382286B (en) | Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing | |
| CN203517788U (en) | Porous body burning combustor of remixing coal gas whirl flow with premix gas | |
| CN116004934A (en) | Catenary top-combustion hot-blast stove of high-power long-life combination body | |
| CN201245671Y (en) | Novel catenary dome ceramic combusting device hot-air furnace | |
| CN100578085C (en) | Multiple fire hole flame-free ceramic burner | |
| CN202415583U (en) | Hot-blast stove with upwards spraying air and rotational-flow mixed combusting apparatus and coal gas nozzles uniformly distributed in ring channel | |
| CN212688112U (en) | High-air-temperature hot blast stove with ultralow nitrogen oxide emission | |
| CN111690785B (en) | Top combustion type hot blast stove with central uniformly distributed burner | |
| KR20220059520A (en) | Shaftless Air Heater | |
| CN109945192B (en) | High-calorific-value fuel concentric jet air single-heat-storage burner | |
| CN204080004U (en) | A kind of double-current field top burning type hot blast stove combustor | |
| CN216891059U (en) | Swirl short-flame top-combustion type hot blast stove | |
| CN111876544A (en) | High-air-temperature hot blast stove with ultralow nitrogen oxide emission | |
| CN110760347A (en) | Gasifier side baker | |
| CN114574645B (en) | Multi-rotational-flow columnar-flow low-nitrogen top-combustion hot blast stove | |
| CN218710617U (en) | Multi-cyclone top combustion hot blast stove | |
| CN219083067U (en) | Pellet rotary kiln gas burner | |
| CN216891060U (en) | Double-loop rotational flow column flow low-nitrogen top combustion type hot blast stove | |
| CN220728234U (en) | Burner with main and auxiliary cyclone premixing chambers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |