CN112923720A - Hot-blast furnace and slewing equipment - Google Patents
Hot-blast furnace and slewing equipment Download PDFInfo
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- CN112923720A CN112923720A CN202110155914.5A CN202110155914A CN112923720A CN 112923720 A CN112923720 A CN 112923720A CN 202110155914 A CN202110155914 A CN 202110155914A CN 112923720 A CN112923720 A CN 112923720A
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- gas
- hot gas
- hot
- combustion chamber
- solid separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/02—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
Abstract
The application discloses hot-blast furnace and slewing equipment, wherein, the hot-blast furnace includes: the gas-solid separation chamber is provided with a pyrolysis gas outlet and a first ash discharge port and is fixedly communicated with the discharge end of the rotary drum of the rotary equipment in a rotating and sealing manner; the combustion chamber is provided with a pyrolysis gas inlet, an air inlet, a hot gas outlet and a second ash discharge port, the pyrolysis gas inlet is communicated with the pyrolysis gas outlet, the hot gas outlet is used for discharging hot gas generated by combustion, and the air inlet is used for introducing oxygen-containing gas; and the combustor is arranged in the combustion chamber, is communicated with the combustion chamber and is used for igniting the pyrolysis gas in the combustion chamber. The hot blast stove has the advantages that pyrolysis gas collection, pyrolysis gas conveying, pyrolysis gas combustion and hot gas discharge integration are completed in the hot blast stove, the process route is short, the number of auxiliary devices is small, the number of leakage points is small, the structure is simple, the operation is stable, and the maintenance is convenient.
Description
Technical Field
The invention relates to the technical field of environmental protection, energy and chemical equipment, in particular to a hot blast stove. The invention also relates to a rotary device comprising the hot blast stove.
Background
With the continuous promotion of the industrialization process of China, the living standard of people is continuously improved, the waste solid waste generated by household waste, municipal waste, kitchen waste, garden waste, urban sewage treatment plants and industrial enterprises is gradually increased, the solid waste contains a large amount of microorganisms, pathogenic bacteria, heavy metal ions and other toxic and harmful substances, and the carbonization technology is widely accepted by the market along with the improvement of the carbonization technology of the solid waste; and pyrolysis gas generated by carbonizing solid waste needs to be combusted. In the prior art, the pyrolysis gas collection, the pyrolysis gas delivery and the pyrolysis gas combustion are respectively independent devices, so that the process is complex, a plurality of fault points are provided, and the operation reliability is low.
Disclosure of Invention
In view of this, the present invention provides a hot blast stove, which has a simplified structure and improved operation reliability.
Another object of the present invention is to provide a rotary apparatus comprising the hot blast stove, to simplify the process path, simplify the structure, and improve the operational reliability.
In order to achieve the purpose, the invention provides the following technical scheme:
a hot blast stove comprising:
the gas-solid separation chamber is provided with a pyrolysis gas outlet and a first ash discharge port and is fixedly communicated with the discharge end of the rotary drum of the rotary equipment in a rotating and sealing manner;
the combustion chamber is provided with a pyrolysis gas inlet, an air inlet, a hot gas outlet and a second ash discharge port, the pyrolysis gas inlet is communicated with the pyrolysis gas outlet, the hot gas outlet is used for discharging hot gas generated by combustion, and the air inlet is used for introducing oxygen-containing gas;
and the combustor is arranged in the combustion chamber, is communicated with the combustion chamber and is used for igniting the pyrolysis gas in the combustion chamber.
Preferably, in the above hot blast stove, the revolving apparatus further comprises a follower jacket and/or a fixed jacket, the follower jacket is fixedly arranged on the outer wall of the drum, and the follower jacket rotates together with the drum; the fixed jacket is sleeved on the periphery of the roller in a sealing manner, the fixed jacket is fixed, and the outer wall of the roller is connected with the fixed jacket in a rotating and sealing manner;
the hot gas outlet is communicated with the follow-up jacket and/or the fixed jacket and/or the roller.
Preferably, in the above hot blast stove, a pyrolysis gas delivery pipe is arranged in the combustion chamber, one end of the pyrolysis gas delivery pipe is communicated with the pyrolysis gas outlet, and the other end of the pyrolysis gas delivery pipe passes through the pyrolysis gas inlet and enters the combustion chamber.
Preferably, in the above-mentioned hot blast stove, still be provided with the median septum in the combustion chamber, the median septum block set up in the air intake with between the hot gas outlet, be used for with the combustion chamber is divided into combustion area and hot gas exhaust area, combustion area with the upper portion intercommunication in hot gas exhaust area.
Preferably, in foretell hot-blast furnace, the gas-solid separating chamber with the combustion chamber is integrated into one piece structure, the gas-solid separating chamber with the adjacent conch wall of combustion chamber shares one, hot gas outlet set up in the gas-solid separating chamber with the conch wall that the combustion chamber shares, just hot gas outlet pass through the hot gas conveyer pipe with follow-up jacket and/or fixed jacket and/or the cylinder intercommunication, the pipe wall and the hot gas outlet of hot gas conveyer pipe rotate sealing connection, the hot gas conveyer pipe with the cylinder is static setting relatively.
Preferably, in foretell hot-blast furnace, the gas-solid separating chamber with the combustion chamber is the components of a whole that can function independently structure, the gas-solid separating chamber with the adjacent conchal wall of combustion chamber is two solitary conchal walls, hot gas outlet set up in being close to of gas-solid separating chamber the conchal wall of combustion chamber, hot gas outlet through hot gas conveyer pipe with follow-up jacket and/or fixed jacket and/or the cylinder intercommunication, the pipe wall of hot gas conveyer pipe with the combustion chamber with two adjacent conchal walls of gas-solid separating chamber are all sealed rotation connection, hot gas conveyer pipe with the cylinder is static relatively sets up.
Preferably, in the hot blast stove, the discharge end of the drum is open, the gas-solid separation chamber is in rotary sealing connection with the outer peripheral wall of the discharge end of the drum, and the gas-solid separation chamber is communicated with the discharge end of the drum;
the hot gas delivery pipe includes:
the hot gas conveying main pipe is in rotary sealing connection with a shell wall shared by the combustion chamber and the gas-solid separation chamber or two adjacent shell walls, the axis of the hot gas conveying main pipe is superposed with the axis of the roller, and the hot gas conveying main pipe is communicated with the combustion chamber;
and two ends of the hot gas conveying branch pipe are respectively fixedly communicated with the hot gas conveying main pipe and a follow-up jacket arranged on the roller, and the hot gas conveying branch pipe is positioned in the gas-solid separation chamber.
Preferably, in the above-mentioned hot air furnace, the number of the hot air delivery branch pipes is plural, the hot air delivery branch pipes are uniformly arranged along a conical surface and have an umbrella-shaped structure, and a gap is provided between adjacent hot air delivery branch pipes.
Preferably, in the above hot blast stove, the discharge end of the drum is closed, and the gas-solid separation chamber is connected with the outer peripheral wall of the discharge end of the drum in a rotating and sealing manner; the gas-solid separation chamber is communicated with the discharge end of the roller through a roller wall discharge mechanism; the cylinder wall discharging mechanism is sequentially obliquely inserted into the cylinder from the outside of the cylinder and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism is positioned in the cylinder, and the outlet of the cylinder wall discharging mechanism is positioned in the gas-solid separation chamber;
the hot gas delivery pipe includes:
the hot gas conveying main pipe is in rotary sealing connection with a shell wall shared by the combustion chamber and the gas-solid separation chamber or two adjacent shell walls, the axis of the hot gas conveying main pipe is superposed with the axis of the roller, and one end of the hot gas conveying main pipe is communicated with the combustion chamber;
the hot gas conveying branch pipe is located in the gas-solid separation chamber, one end of the hot gas conveying branch pipe is fixedly communicated with the hot gas conveying main pipe, and the other end of the hot gas conveying branch pipe is fixedly communicated with the servo jacket.
Preferably, in the hot blast stove, the discharge end of the drum is open, the gas-solid separation chamber is in rotary sealing connection with the outer peripheral wall of the discharge end of the drum, and the gas-solid separation chamber is communicated with the discharge end of the drum;
the hot gas delivery pipe includes:
the hot gas conveying main pipe is in rotary sealing connection with a shell wall shared by the combustion chamber and the gas-solid separation chamber or two adjacent shell walls, the axis of the hot gas conveying main pipe is superposed with the axis of the roller, and two ends of the hot gas conveying main pipe are respectively communicated with the combustion chamber and the roller;
the hot gas conveying branch pipe is positioned in the roller, one end of the hot gas conveying branch pipe is fixedly communicated with the hot gas conveying main pipe, and the other end of the hot gas conveying branch pipe is fixed with the inner wall of the roller and is communicated with the servo jacket and/or the fixed jacket.
Preferably, in the above hot blast stove, the discharge end of the drum is closed, and the gas-solid separation chamber is connected with the outer peripheral wall of the discharge end of the drum in a rotating and sealing manner; the gas-solid separation chamber is communicated with the discharge end of the roller through a roller wall discharge mechanism; the cylinder wall discharging mechanism is sequentially obliquely inserted into the cylinder from the outside of the cylinder and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism is positioned in the cylinder, and the outlet of the cylinder wall discharging mechanism is positioned in the gas-solid separation chamber;
the hot gas delivery pipe includes:
the hot gas conveying main pipe is in rotary sealing connection with a shell wall shared by the combustion chamber and the gas-solid separation chamber or two adjacent shell walls, the axis of the hot gas conveying main pipe is superposed with the axis of the roller, and two ends of the hot gas conveying main pipe are respectively communicated with the combustion chamber and the roller;
the hot gas conveying branch pipe is positioned in the roller, one end of the hot gas conveying branch pipe is fixedly communicated with the hot gas conveying main pipe, and the other end of the hot gas conveying branch pipe is communicated with the servo jacket and/or the fixed jacket.
The application also provides rotary equipment, which comprises a roller and the hot blast stove.
Preferably, in the above-described swing apparatus, the drum is continuously rotated or reciprocally swung in the same direction about its axis.
Compared with the prior art, the invention has the beneficial effects that:
the hot blast stove provided by the invention comprises a gas-solid separation chamber, a combustion chamber and a burner; the gas-solid separation chamber is fixedly communicated with the discharge end of the rotary drum of the rotary equipment in a rotating and sealing way; the combustion chamber is provided with a pyrolysis gas inlet, an air inlet, a hot gas outlet and a second ash discharge port, the pyrolysis gas inlet is communicated with the pyrolysis gas outlet, the hot gas outlet is used for discharging hot gas generated by combustion, and the air inlet is used for introducing oxygen-containing gas; the combustor is arranged in the combustion chamber, communicated with the combustion chamber and used for igniting pyrolysis gas in the combustion chamber.
The gas-solid separation chamber of the hot blast stove is directly communicated with the discharge end of the roller in a rotating and sealing manner, pyrolysis gas and waste materials in the roller enter the gas-solid separation chamber from the discharge end of the roller to be separated, the pyrolysis gas enters the combustion chamber through a pyrolysis gas outlet and a pyrolysis gas inlet, an air inlet is filled with oxygen-containing gas to be mixed with the pyrolysis gas, the pyrolysis gas is ignited by the combustor to be combusted, and hot gas generated by combustion is discharged from a hot gas outlet. Therefore, the pyrolysis gas collection, the pyrolysis gas conveying, the pyrolysis gas combustion and the hot gas discharge are integrated in the hot blast stove, the process route is short, the number of auxiliary equipment is small, the number of leakage points is small, the structure is simple, the operation is stable, and the maintenance is convenient. In addition, high-temperature pyrolysis gas directly enters the gas-solid separation chamber from the discharge end of the roller and then directly enters the combustion chamber, and no pyrolysis gas coking is generated.
The rotary equipment provided by the invention comprises the roller and the hot blast stove, so that the rotary equipment has the same technical effect as the hot blast stove, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hot blast stove provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of another hot blast stove provided by the embodiment of the invention;
FIG. 3 is a schematic structural view of section A-A of FIG. 1;
FIG. 4 is a schematic structural view of a section B-B in FIG. 1;
FIG. 5 is a schematic side view of a hot gas delivery pipe according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a rotating apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another rotating apparatus according to an embodiment of the present invention.
In fig. 1-7, 1 is a drum, 2 is a follow-up jacket, 3 is a gas-solid separation chamber, 31 is a first ash discharge port, 4 is a pyrolysis gas delivery pipe, 5 is a combustion chamber, 51 is an air inlet, 52 is a second ash discharge port, 53 is a hot gas outlet, 6 is a burner, 7 is a middle partition plate, 8 is a hot gas delivery pipe, 81 is a hot gas delivery main pipe, 82 is a hot gas delivery branch pipe, 9 is a cylinder wall discharging mechanism, and 10 is a fixed jacket.
Detailed Description
The core of the invention is to provide the hot blast stove, which simplifies the structure and improves the operation reliability.
The invention also provides rotary equipment comprising the hot blast stove, which simplifies the process path, simplifies the structure and improves the operation reliability.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention provides a hot blast stove, including a gas-solid separation chamber 3, a combustion chamber 5 and a burner 6, wherein the gas-solid separation chamber 3 is provided with a pyrolysis gas outlet and a first ash discharge port 31, the pyrolysis gas outlet is used for discharging pyrolysis gas separated from the gas-solid separation chamber 3, the first ash discharge port 31 is used for discharging solid waste separated from the gas-solid separation chamber 3, the gas-solid separation chamber 3 is used for being fixedly and sealingly communicated with a discharge end of a drum 1 of a rotary apparatus in a rotating manner, specifically, a shell wall of the gas-solid separation chamber 3 is rotatably connected with a discharge end cylinder wall of the drum 1 through a sealing member; the combustion chamber 5 is provided with a pyrolysis gas inlet, an air inlet 51, a hot gas outlet 53 and a second ash discharge port 52, the pyrolysis gas inlet is communicated with the pyrolysis gas outlet and is used for introducing pyrolysis gas separated from the gas-solid separation chamber 3 into the combustion chamber 5, the hot gas outlet 53 is used for discharging hot gas generated by combustion in the combustion chamber 5, and the air inlet 53 is used for introducing oxygen-containing gas to participate in combustion reaction; the combustor 6 is arranged in the combustion chamber 5, is communicated with the combustion chamber 5, is used for igniting pyrolysis gas in the combustion chamber 5, is used for heating when the hot blast stove is started and heat supplement of later-stage continuous operation, and can adopt natural gas, biomass, fuel oil and the like as fuels for the combustor 6.
The direct discharge end with cylinder 1 of gas-solid separation chamber 3 of this hot-blast furnace rotates sealed intercommunication, pyrolysis gas and waste material in the cylinder 1 get into gas-solid separation chamber 3 from the discharge end of cylinder 1 and separate, pyrolysis gas passes through pyrolysis gas export and pyrolysis gas import and gets into in the combustion chamber 5, solid waste material passes through first ash hole 31 and discharges, the air intake 51 of combustion chamber 5 lets in oxygen-containing gas, mix with pyrolysis gas, combustor 6 ignites pyrolysis gas and burns, the steam that the burning produced is discharged from hot gas export 53. Therefore, the pyrolysis gas collection, the pyrolysis gas conveying, the pyrolysis gas combustion and the hot gas discharge are integrated in the hot blast stove, the process path is short, the number of auxiliary equipment is small, the number of leakage points is small, the structure is simple, the operation is stable, and the maintenance is convenient. In addition, high-temperature pyrolysis gas directly enters the gas-solid separation chamber 3 from the discharge end of the roller 1 and then directly enters the combustion chamber 5, and no pyrolysis gas coking condition exists.
As shown in fig. 1, fig. 2, fig. 6 and fig. 7, further, in the present embodiment, the revolving apparatus further includes a follower jacket 2 and/or a fixed jacket 10, the follower jacket 2 is fixedly disposed on the outer wall of the drum 1, and the follower jacket 2 rotates together with the drum 1; the fixed jacket 10 is hermetically sleeved on the periphery of the roller 1, the fixed jacket 10 is fixed, and the outer wall of the roller 1 is in rotary sealing connection with the fixed jacket 10; the hot gas outlet 53 communicates with the follower jacket 2 and/or the stationary jacket 10 and/or the drum 1.
The rotary equipment indirectly heats the materials in the roller 1 by introducing a heating medium into the follow-up jacket 2 and/or the fixed jacket 10, so that a hot gas outlet of a combustion chamber 5 of the hot blast stove is communicated with the follow-up jacket 2 and/or the fixed jacket 10, and high-temperature hot gas generated in the combustion chamber 5 enters the follow-up jacket 2 and/or the fixed jacket 10 to indirectly heat the materials in the roller 1; the hot gas outlet 53 of the combustion chamber 5 is communicated with the roller 1, so that high-temperature hot gas generated by the combustion chamber 5 can be directly introduced into the roller 1, and the high-temperature hot gas and materials in the roller 1 are directly heated in a contact manner. In the embodiment, hot air in the hot air furnace is utilized to heat materials in the roller 1, so that pyrolysis gas energy in the roller 1 is fully utilized, and the energy consumption is reduced.
Of course, the hot air outlet 53 may not be connected to the drum 1, the follower jacket 2 and/or the stationary jacket 10, and may be directly purified and discharged. Only the combustion energy of the pyrolysis gas generated in the drum 1 can not be effectively utilized, and only the pyrolysis gas can be simply combusted, so that energy loss is caused.
As shown in fig. 1 and fig. 2, further, in this embodiment, a pyrolysis gas delivery pipe 4 is disposed in the combustion chamber 5, one end of the pyrolysis gas delivery pipe 4 is communicated with the pyrolysis gas outlet, and the other end of the pyrolysis gas delivery pipe passes through the pyrolysis gas inlet and enters the interior of the combustion chamber 5. Through set up pyrolysis gas conveyer pipe 4 in combustion chamber 5 is integrated, can conveniently directly introduce the pyrolysis gas of separation in the gas-solid separation chamber 3 into combustion chamber 5 and burn, pyrolysis gas transport distance is short, and pyrolysis gas conveyer pipe 4 is located combustion chamber 5, has guaranteed that the temperature of high temperature pyrolysis gas is unchangeable basically, and pyrolysis gas removes dust under high temperature, has avoided pyrolysis gas coking in the pipeline.
Specifically, the pyrolysis gas conveying pipe 4 is horizontally provided with an arc shape from the top of the combustion chamber 5 and is bent downwards, the upper end of the pyrolysis gas conveying pipe is communicated with a pyrolysis gas outlet of the gas-solid separation chamber 3, and the lower end of the pyrolysis gas conveying pipe is close to the air inlet 51, so that the pyrolysis gas conveying pipe is favorable for being rapidly mixed with oxygen-containing gas. Of course, the pyrolysis gas delivery pipe 4 may be externally connected to the combustion chamber 5 and the gas-solid separation chamber 3, but the pyrolysis gas has a problem of heat loss and is liable to coke.
Further, in the present embodiment, an intermediate partition 7 is further disposed in the combustion chamber 5, and the intermediate partition 7 is disposed between the air inlet 51 and the hot air outlet 53 in a blocking manner, and is used for dividing the combustion chamber 5 into a combustion area and a hot air exhaust area, and the combustion area is communicated with an upper portion of the hot air exhaust area. Pyrolysis gas is introduced into the combustion area, the second ash discharge port 52 is located in the combustion area, the pyrolysis gas is combusted in the combustion area, generated dust is discharged from the second ash discharge port 52, generated high-temperature hot gas flows to the hot gas discharge area from the upper portion of the combustion area, and then is discharged through the hot gas outlet. The combustion area and the hot gas discharge area in the combustion chamber 5 are separated by the middle partition plate 7, so that the pyrolysis gas can be prevented from directly discharging from the hot gas outlet 53 after entering the combustion chamber 5, and meanwhile, the dust is prevented from entering the hot gas outlet 53. The lower part of the combustion chamber 5 is funnel-shaped, and the second ash discharge port 52 is provided at the lower end of the funnel-shape.
As shown in fig. 1, in this embodiment, the gas-solid separation chamber 3 and the combustion chamber 5 are an integrated structure, the adjacent shell walls of the gas-solid separation chamber 3 and the combustion chamber 5 share one shell wall, the pyrolysis gas inlet and the pyrolysis gas outlet are the same opening, and the pyrolysis gas inlet, the pyrolysis gas outlet and the hot gas outlet 53 are all disposed on the shell wall shared by the gas-solid separation chamber 3 and the combustion chamber 5, and the hot gas outlet 53 is communicated with the follower jacket 2 and/or the fixed jacket 10 and/or the drum 1 through the hot gas conveying pipe 8, the pipe wall of the hot gas conveying pipe 8 is connected with the hot gas outlet 53 in a rotating and sealing manner, and the hot gas conveying pipe 8 is disposed stationary relative to the drum.
This hot-blast furnace sets up gas-solid separation room 3 and combustion chamber 5 into an organic whole integrated structure, has not only simplified the structure, and the pyrolysis gas in the gas-solid separation room 3 directly gets into in the pyrolysis gas conveyer pipe 4 in the combustion chamber 5 through the opening on the common shell wall, has shortened pyrolysis gas delivery path, and pyrolysis gas is transmitted in the hot-blast furnace all the time, has reduced the heat loss. And set up hot gas conveyer pipe 8 inside the hot-blast furnace, the axis of hot gas conveyer pipe 8 and the coincidence of the axis of cylinder 1 have shortened the distance of hot gas conveyer pipe 8, and have reduced the heat loss among the hot gas transportation process.
During operation, the hot air delivery pipe 8 rotates along with the roller 1, and the hot air delivery pipe 8 is in rotating sealing connection with the hot air outlet 53 through a sealing element. Hot gas in the combustion chamber 5 is introduced into the follow-up jacket 2, the fixed jacket 10 and/or the roller 1 through a hot gas conveying pipe 8.
As shown in fig. 2, this embodiment provides another hot-blast stove, the gas-solid separation chamber 3 and the combustion chamber 5 are in a split structure, the shell walls adjacent to the gas-solid separation chamber 3 and the combustion chamber 5 are two separate shell walls, the pyrolysis gas outlet is arranged on the shell wall on one side of the gas-solid separation chamber 3 close to the combustion chamber 5, the pyrolysis gas inlet and the hot gas outlet 53 are arranged on the shell wall on one side of the combustion chamber 5 close to the gas-solid separation chamber 3, one end of the pyrolysis gas conveying pipe 4 penetrates out of the combustion chamber 5 and is communicated with the pyrolysis gas outlet, the pipe wall of the hot gas conveying pipe 8 is in sealed rotary connection with the two shell walls adjacent to the combustion chamber 5 and the gas-solid separation chamber 3, and.
This hot-blast furnace sets up gas-solid separation chamber 3 and combustion chamber 5 into components of a whole that can function independently structure, through pyrolysis gas conveyer pipe 4 intercommunication, and pyrolysis gas conveyer pipe 4 exposes in the outside pipeline section of combustion chamber 5 shorter, has shortened pyrolysis gas transport route, has reduced the heat loss. The length of the hot gas duct 8 exposed to the outside of the combustion chamber 5 is short, reducing heat losses during the hot gas transport. The axis of the hot gas conveying pipe 8 coincides with the axis of the roller 1, and during operation, the hot gas conveying pipe 8 rotates along with the roller 1, and the hot gas conveying pipe is connected with a hot gas outlet and a shell wall of the gas-solid separation chamber in a rotating and sealing mode through a sealing element. Hot gas in the combustion chamber 5 is introduced into the follow-up jacket 2, the fixed jacket 10 and/or the roller 1 through a hot gas conveying pipe 8.
The hot blast stove with the integrated structure and the split structure has the advantages of simple structure, few auxiliary structures, few leakage points, reliable operation, short path for conveying pyrolysis gas and hot gas and small heat loss.
As shown in fig. 1, 3, 4 and 6, in the present embodiment, the discharge end of the drum 1 is open, the gas-solid separation chamber 3 is connected with the outer peripheral wall of the discharge end of the drum 1 in a rotating and sealing manner, and the gas-solid separation chamber 3 is communicated with the discharge end of the drum 1; the hot gas delivery pipe 8 includes a hot gas delivery main pipe 81 and hot gas delivery branch pipes 82; the hot gas conveying main pipe 81 is in rotary sealing connection with a shell wall shared by the combustion chamber 5 and the gas-solid separation chamber 3 or two adjacent shell walls, namely, if the gas-solid separation chamber 3 and the combustion chamber 5 are in an integrated structure, a pipe wall of the hot gas conveying main pipe 81 is in rotary sealing connection with the shell wall shared by the combustion chamber 5 and the gas-solid separation chamber 3, if the gas-solid separation chamber 3 and the combustion chamber 5 are in a split structure, a pipe wall of the hot gas conveying main pipe 81 is in rotary sealing connection with the two adjacent shell walls of the combustion chamber 5 and the gas-solid separation chamber 3, an axis of the hot gas conveying main pipe 81 is superposed with an axis of the roller 1, and the hot gas conveying main pipe 81 is communicated; the two ends of the hot gas conveying branch pipe 82 are respectively fixedly communicated with the hot gas conveying main pipe 81 and the servo jacket 2 arranged on the roller 1, and the hot gas conveying branch pipe 82 is positioned in the gas-solid separation chamber 3.
The length of the hot air conveying main pipe 81 is set according to the requirement, if the hot air conveying main pipe 81 is communicated with the interior of the roller 1, the length of the hot air conveying main pipe 81 can be lengthened and extended to the interior of the roller 1, so that the hot air participates in direct contact heating; if the main hot air delivery pipe 81 does not need to communicate with the drum 1, the length of the main hot air delivery pipe 81 is short, and one end of the main hot air delivery pipe 81 only communicates with the branch hot air delivery pipe 82 in a crossing manner. Because the axis of the main hot gas delivery pipe 81 coincides with the axis of the drum 1, the follow-up jacket 2 is fixed on the outer wall of the drum 1, and one end of the branch hot gas delivery pipe 82 is fixedly communicated with the end of the follow-up jacket 2, the main hot gas delivery pipe 81 is supported and fixed by the branch hot gas delivery pipe 82.
When the hot blast stove works, the roller 1 drives the follow-up jacket 2 and the hot gas conveying pipe 8 to rotate together relative to the hot blast stove, pyrolysis gas and solid waste in the roller 1 are directly discharged from an open discharge end and enter the gas-solid separation chamber 3, and hot gas in the combustion chamber 5 enters the follow-up jacket 2 through the hot gas conveying pipe 8. Since the main hot gas delivery pipes 81 and the branch hot gas delivery pipes 82 are located in the hot blast stove, heat loss during hot gas delivery is reduced.
In the present embodiment, the hot gas delivery manifold 82 is located inside the gas-solid separation chamber 3, as in the hot gas delivery pipe 8 of fig. 1, except that: the discharge end of the roller 1 is sealed, and the gas-solid separation chamber 3 is in rotary sealing connection with the peripheral wall of the discharge end of the roller 1; the gas-solid separation chamber 3 is communicated with the discharge end of the roller 1 through a roller wall discharge mechanism 9; the cylinder wall discharging mechanism 9 is sequentially and obliquely inserted into the cylinder 1 from the outside of the cylinder 1 and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism 9 is positioned in the cylinder 1, and the outlet of the cylinder wall discharging mechanism 9 is positioned in the gas-solid separation chamber 3.
During operation, cylinder 1 drives follow-up jacket 2 and hot gas conveyer pipe 8 and rotates together, and pyrolysis gas and solid waste in the discharge end of cylinder 1 are discharged through section of thick bamboo wall discharge mechanism 9, get into in the gas-solid separation chamber 3, and after the gas-solid separation, pyrolysis gas gets into combustion chamber 5 burning, and the steam of production is carried main pipe 81 through the hot gas and is carried to hot gas conveying branch pipe 82, gets into at last and carries out the indirect heating of material in the follow-up jacket 2. If hot gas is required to enter the drum 1, a hot gas delivery main 81 may be extended into the drum 1 to participate in the direct contact heating of the material.
The discharging of the pyrolysis gas and the solid waste in the roller 1 is controllable through the roller wall discharging mechanism 9. The discharge end of the roller 1 is open, and the discharge of the hot blast stove without the cylinder wall discharge mechanism 9 is uncontrollable.
Further, in this embodiment, the number of the hot gas conveying branch pipes 82 in the above embodiment is plural, the hot gas conveying branch pipes 82 are uniformly arranged along the conical surface and have an umbrella-shaped structure, and a gap is provided between adjacent hot gas conveying branch pipes 82, so that the discharge of the pyrolysis gas and the solid waste in the drum 1 is not hindered. The hot gas conveying pipe 8 with the umbrella-shaped structure is stable in structure, the hot gas conveying branch pipe 82 is preferably a straight pipe, the conveying path is short, and the hot gas conveying branch pipe 82 is conveniently and fixedly communicated with the end part of the follow-up jacket 2.
Of course, the hot gas delivery branch pipe 82 may also be an arc pipe, a bent pipe, or the like, as long as the fixed communication between the hot gas delivery branch pipe 82 and the servo jacket 2 can be achieved.
As shown in fig. 5 and 7, the present embodiment provides another hot gas conveying pipe 8, the discharge end of the drum 1 is open, the gas-solid separation chamber 3 is rotatably and hermetically connected to the outer peripheral wall of the discharge end of the drum 1, and the gas-solid separation chamber 3 is communicated with the discharge end of the drum 1; the hot gas delivery pipe 8 includes a hot gas delivery main pipe 81 and hot gas delivery branch pipes 82; the hot gas conveying main pipe 81 is in rotary sealing connection with a shell wall shared by the combustion chamber 5 and the gas-solid separation chamber 3 or two adjacent shell walls, namely, if the gas-solid separation chamber 3 and the combustion chamber 5 are in an integrated structure, a pipe wall of the hot gas conveying main pipe 81 is in rotary sealing connection with the shell wall shared by the combustion chamber 5 and the gas-solid separation chamber 3, if the gas-solid separation chamber 3 and the combustion chamber 5 are in a split structure, a pipe wall of the hot gas conveying main pipe 81 is in rotary sealing connection with the two adjacent shell walls of the combustion chamber 5 and the gas-solid separation chamber 3, an axis of the hot gas conveying main pipe 81 is superposed with an axis of the roller 1, two ends of the hot gas conveying main pipe 81 are respectively communicated with the combustion chamber 5 and the roller 1, and the hot; the hot gas conveying branch pipe 82 is positioned in the roller 1, one end of the hot gas conveying branch pipe 82 is fixedly communicated with the hot gas conveying main pipe 81, the other end of the hot gas conveying branch pipe 82 is fixed with the inner wall of the roller 1 and is communicated with the servo jacket 2 and/or the fixed jacket 10, namely, the other end of the hot gas conveying branch pipe 82 is fixed with the inner wall of the roller 1 and is communicated with the servo jacket 2 or the fixed jacket 10 through an opening in the inner wall.
In this hot-blast furnace, the steam is carried main pipe 81 and is carried branch pipe 82 through the steam and support fixedly, in operation, cylinder 1 drives follow-up jacket 2 and steam conveyer pipe 8 and rotates together relative hot-blast furnace, fixed jacket 10 is fixed motionless, pyrolysis gas and solid waste in the cylinder 1 are from open discharge end direct discharge, get into in the gas-solid separation chamber 3, steam in the combustion chamber 5 carries main pipe 81 through the steam and carries out the direct contact heating of material to cylinder 1 in, steam passes through in steam carries branch pipe 82 and gets into follow-up jacket 2 and/or fixed jacket 10, indirect heating carries out. Since most of the main hot gas delivery pipe 81 and the branch hot gas delivery pipes 82 are located in the hot blast stove, heat loss during hot gas delivery is reduced.
Further, the number of the hot air delivery branch pipes 82 is plural, and preferably, the axes of the plural hot air delivery branch pipes 82 are located in the same cross section of the drum 1 and are arranged in a radial shape, so that the structural stability can be improved, and the delivery path is short. Of course, the plurality of hot gas delivery branch pipes 82 may be arranged arbitrarily as long as they can be fixed to the drum 1 and communicate with the follower jacket 2 or the fixed jacket 10.
As shown in fig. 2, the hot gas delivery pipe 8 in the present embodiment is the same as the hot gas delivery pipe 8 in fig. 7 except that: the discharge end of the roller 1 is sealed, and the gas-solid separation chamber 3 is in rotary sealing connection with the peripheral wall of the discharge end of the roller 1; the gas-solid separation chamber 3 is communicated with the discharge end of the roller 1 through a roller wall discharge mechanism 9; the cylinder wall discharging mechanism 9 is sequentially and obliquely inserted into the cylinder 1 from the outside of the cylinder 1 and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism 9 is positioned in the cylinder 1, and the outlet of the cylinder wall discharging mechanism 9 is positioned in the gas-solid separation chamber 3;
during operation, cylinder 1 drives follow-up clamp cover 2 and hot gas conveyer pipe 8 and rotates together, and pyrolysis gas and solid waste in the 1 discharge end of cylinder discharge end discharge mechanism 9 of passing through the section of thick bamboo wall are discharged, get into in the gas-solid separation chamber 3, and after the gas-solid separation, pyrolysis gas gets into the combustion chamber 5 and burns, and the steam of production is carried main pipe 81 through the steam and is got into in the cylinder 1, participates in the direct contact heating of material, and steam carries out the indirect heating of material in getting into follow-up clamp cover 2 and/or the fixed clamp cover 10 through steam conveying branch pipe 82.
The discharging of the pyrolysis gas and the solid waste in the roller 1 is controllable through the roller wall discharging mechanism 9. The discharge end of the roller 1 is open, and the discharge of the hot blast stove without the cylinder wall discharge mechanism 9 is uncontrollable.
Further, in this embodiment, the cylinder wall discharging mechanism 9 is a cylinder wall spiral discharging mechanism, and the cylinder wall spiral discharging mechanism discharges materials by spiral rotation.
As shown in fig. 6 and 7, based on the hot blast stove described in any of the above embodiments, an embodiment of the present invention further provides a rotary apparatus comprising a drum 1 and the hot blast stove described in any of the above embodiments. The rotary equipment is also provided with a follow-up jacket 2 and/or a fixed jacket 10, the hot blast stove and the fixed jacket 10 are fixed, and the follow-up jacket 2 is fixed on the outer wall of the roller 1 and rotates along with the roller 1.
When the rotary equipment works, materials in the roller 1 are discharged and directly enter the gas-solid separation chamber 3, pyrolysis gas after gas-solid separation directly enters the combustion chamber 5 to participate in combustion to generate hot gas, and the hot gas is discharged out of the hot blast stove. In the whole process, pyrolysis gas collection, pyrolysis gas conveying, pyrolysis gas combustion and hot gas discharge are integrated and completed in the hot blast stove, the process path is short, the number of auxiliary equipment is small, the number of leakage points is small, the structure is simple, the operation is stable, and the maintenance is convenient. In addition, high-temperature pyrolysis gas directly enters the gas-solid separation chamber 3 from the discharge end of the roller 1 and then directly enters the combustion chamber 5, and no pyrolysis gas coking condition exists.
Further, in the present embodiment, the drum 1 continuously rotates or reciprocally oscillates in the same direction about its axis. Among them, the revolving equipment in which the drum 1 continuously rotates around its axis in the same direction is a revolving type revolving equipment, the revolving equipment in which the drum 1 reciprocally swings around its axis is a center swinging type revolving equipment, and the radian of reciprocal swinging of the drum 1 is preferably 60 ° to 360 °, more preferably 180 ° to 270 °. The two types of rotary equipment can be used as the hot blast stove in the application, and the application range is wide.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A hot blast stove, comprising:
the device comprises a gas-solid separation chamber (3), wherein the gas-solid separation chamber (3) is provided with a pyrolysis gas outlet and a first ash discharge port (31), and the gas-solid separation chamber (3) is fixedly communicated with a discharge end of a roller (1) of the rotary equipment in a rotating and sealing manner;
the combustion chamber (5) is provided with a pyrolysis gas inlet, an air inlet (51), a hot gas outlet (53) and a second ash discharge port (52), the pyrolysis gas inlet is communicated with the pyrolysis gas outlet, the hot gas outlet (53) is used for discharging hot gas generated by combustion, and the air inlet (51) is used for introducing oxygen-containing gas;
the combustor (6) is arranged in the combustion chamber (5), is communicated with the combustion chamber (5) and is used for igniting pyrolysis gas in the combustion chamber (6).
2. The hot blast stove according to claim 1, characterized in that the rotary device further comprises a follower jacket (2) and/or a fixed jacket (10), the follower jacket (2) being fixedly arranged to the outer wall of the drum (1), the follower jacket (2) rotating together with the drum (1); the fixed jacket (10) is sleeved on the periphery of the roller (1) in a sealing manner, the fixed jacket (10) is fixed, and the outer wall of the roller (1) is connected with the fixed jacket (10) in a rotating and sealing manner;
the hot gas outlet (53) is communicated with the follow-up jacket (2) and/or the fixed jacket (10) and/or the roller (1).
3. The hot blast stove according to claim 1, characterized in that a pyrolysis gas delivery pipe (4) is arranged in the combustion chamber (5), one end of the pyrolysis gas delivery pipe (4) is communicated with the pyrolysis gas outlet, and the other end of the pyrolysis gas delivery pipe passes through the pyrolysis gas inlet and enters the interior of the combustion chamber (5).
4. The hot blast stove according to claim 1, wherein a central partition (7) is further provided in the combustion chamber (5), the central partition (7) being arranged between the air inlet (51) and the hot gas outlet (53) in a blocking manner for dividing the combustion chamber (5) into a combustion region and a hot gas discharge region, the combustion region communicating with an upper portion of the hot gas discharge region.
5. The hot blast stove according to claim 2, wherein the gas-solid separation chamber (3) and the combustion chamber (5) are of an integrated structure, the adjacent shell walls of the gas-solid separation chamber (3) and the combustion chamber (5) share one shell wall, the hot gas outlet (53) is arranged on the shell wall shared by the gas-solid separation chamber (3) and the combustion chamber (5), the hot gas outlet (53) is communicated with the servo jacket (2) and/or the fixed jacket (10) and/or the drum (1) through a hot gas conveying pipe (8), the pipe wall of the hot gas conveying pipe (8) is in rotary sealing connection with the hot gas outlet (53), and the hot gas conveying pipe (8) and the drum (1) are arranged relatively statically.
6. The hot blast stove according to claim 2, wherein the gas-solid separation chamber (3) and the combustion chamber (5) are of a split structure, the adjacent shell walls of the gas-solid separation chamber (3) and the combustion chamber (5) are two separate shell walls, the hot gas outlet (53) is arranged on the shell wall of the gas-solid separation chamber (3) close to the combustion chamber (5), the hot gas outlet (53) is communicated with the follower jacket (2) and/or the fixed jacket (10) and/or the drum (1) through a hot gas conveying pipe (8), the pipe wall of the hot gas conveying pipe (8) is in sealed and rotating connection with the adjacent two shell walls of the combustion chamber (5) and the gas-solid separation chamber (3), and the hot gas conveying pipe (8) is arranged relatively statically with the drum (1).
7. The hot blast stove according to claim 5 or 6, characterized in that the discharge end of the drum (1) is open, the gas-solid separation chamber (3) is in rotary sealing connection with the peripheral wall of the discharge end of the drum (1), and the gas-solid separation chamber (3) is communicated with the discharge end of the drum (1);
the hot gas delivery pipe (8) comprises:
the hot gas conveying main pipe (81) is in rotary sealing connection with a shell wall shared by the combustion chamber (5) and the gas-solid separation chamber (3) or two adjacent shell walls, the axis of the hot gas conveying main pipe (8) is superposed with the axis of the roller (1), and the hot gas conveying main pipe (81) is communicated with the combustion chamber (5);
and the two ends of the hot gas conveying branch pipe (82) are respectively fixedly communicated with the hot gas conveying main pipe (81) and the follow-up jacket (2) arranged on the roller (1), and the hot gas conveying branch pipe (82) is positioned in the gas-solid separation chamber (3).
8. The hot blast stove according to claim 7, characterized in that the number of the hot gas delivery branch pipes (82) is plural, the hot gas delivery branch pipes (82) are uniformly arranged along a conical surface and are in an umbrella-shaped structure 81, and a gap is provided between adjacent hot gas delivery branch pipes (82).
9. The hot blast stove according to claim 5 or 6, wherein the discharge end of the drum (1) is closed, and the gas-solid separation chamber (3) is in rotary sealing connection with the peripheral wall of the discharge end of the drum (1); the gas-solid separation chamber (3) is communicated with the discharge end of the roller (1) through a roller wall discharge mechanism (9); the cylinder wall discharging mechanism (9) is sequentially and obliquely inserted into the cylinder (1) from the outside of the cylinder (1) and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism (9) is positioned in the cylinder (1), and the outlet of the cylinder wall discharging mechanism (9) is positioned in the gas-solid separation chamber (3);
the hot gas delivery pipe (8) comprises:
the hot gas conveying main pipe (81) is in rotary sealing connection with a shell wall shared by the combustion chamber (5) and the gas-solid separation chamber (3) or two adjacent shell walls, the axis of the hot gas conveying main pipe (81) is superposed with the axis of the roller (1), and one end of the hot gas conveying main pipe (81) is communicated with the combustion chamber (5);
the hot gas conveying branch pipe (82), the hot gas conveying branch pipe (82) is located in the gas-solid separation chamber (3), one end of the hot gas conveying branch pipe (82) is fixedly communicated with the hot gas conveying main pipe (81), and the other end of the hot gas conveying branch pipe (82) is fixedly communicated with the follow-up jacket (2).
10. The hot blast stove according to claim 5 or 6, characterized in that the discharge end of the drum (1) is open, the gas-solid separation chamber (3) is in rotary sealing connection with the peripheral wall of the discharge end of the drum (1), and the gas-solid separation chamber (3) is communicated with the discharge end of the drum (1);
the hot gas delivery pipe (81) includes:
the hot gas conveying main pipe (81) is in rotary sealing connection with a shell wall shared by the combustion chamber (5) and the gas-solid separation chamber (3) or two adjacent shell walls, the axis of the hot gas conveying main pipe (81) is superposed with the axis of the roller (1), and two ends of the hot gas conveying main pipe (81) are respectively communicated with the combustion chamber (5) and the roller (1);
the hot gas conveying branch pipe (82) is located in the roller (1), one end of the hot gas conveying branch pipe (82) is fixedly communicated with the hot gas conveying main pipe (81), and the other end of the hot gas conveying branch pipe (82) is fixed to the inner wall of the roller (1) and is communicated with the follow-up jacket (2) and/or the fixed jacket (10).
11. The hot blast stove according to claim 5 or 6, wherein the discharge end of the drum (1) is closed, and the gas-solid separation chamber (3) is in rotary sealing connection with the peripheral wall of the discharge end of the drum (1); the gas-solid separation chamber (3) is communicated with the discharge end of the roller (1) through a roller wall discharge mechanism (9); the cylinder wall discharging mechanism (9) is sequentially and obliquely inserted into the cylinder (1) from the outside of the cylinder (1) and penetrates through the discharging end, the inlet of the cylinder wall discharging mechanism (9) is positioned in the cylinder (1), and the outlet of the cylinder wall discharging mechanism (9) is positioned in the gas-solid separation chamber (3);
the hot gas delivery pipe (8) comprises:
the hot gas conveying main pipe (81) is in rotary sealing connection with a shell wall shared by the combustion chamber (5) and the gas-solid separation chamber (3) or two adjacent shell walls, the axis of the hot gas conveying main pipe (81) is superposed with the axis of the roller (1), and two ends of the hot gas conveying main pipe (81) are respectively communicated with the combustion chamber (5) and the roller (1);
the hot gas conveying branch pipe (82) is located in the roller (1), one end of the hot gas conveying branch pipe (82) is fixedly communicated with the hot gas conveying main pipe (81), and the other end of the hot gas conveying branch pipe (82) is communicated with the servo jacket (2) and/or the fixed jacket (10).
12. A rotary apparatus comprising a drum (1), characterized by a hot blast stove according to any one of claims 1-11.
13. The rotating device according to claim 12, characterized in that the drum (1) rotates or oscillates back and forth continuously in the same direction around its axis.
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| CN202110155914.5A CN112923720B (en) | 2021-02-04 | 2021-02-04 | Hot-blast furnace and slewing equipment |
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