CN110940090A - Efficient energy-saving multi-temperature stepped hot air system - Google Patents
Efficient energy-saving multi-temperature stepped hot air system Download PDFInfo
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- CN110940090A CN110940090A CN201911324293.8A CN201911324293A CN110940090A CN 110940090 A CN110940090 A CN 110940090A CN 201911324293 A CN201911324293 A CN 201911324293A CN 110940090 A CN110940090 A CN 110940090A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/067—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
- F24H9/0057—Guiding means
- F24H9/0068—Guiding means in combustion gas channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
- F24H9/0073—Arrangement or mounting of means for forcing the circulation of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/189—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The invention relates to the technical field of thermodynamic machinery, in particular to a high-efficiency energy-saving multi-temperature ladder hot air system which comprises a hot air furnace body, wherein the hot air furnace body is a rectangular hollow furnace body, the interior of the hot air furnace body is divided into four regions from bottom to top, namely an ash accumulation bin, a combustion bin, a heat exchange bin and a hot air bin; the ash accumulation bin is arranged at the bottommost layer of the hot blast furnace body; the combustion bin is arranged above the ash deposition bin; the heat exchange bin is arranged above the combustion bin; the hot air bin is arranged at the topmost layer of the hot air furnace body. The invention has the beneficial effects that: the smoke exhaust pipeline is distributed in the hot air bin at the top layer in a snake shape, so that the waste heat of smoke is fully utilized; two hot air outlets are arranged in the hot air bin, one of the hot air outlets sends out air heated by a flue gas pipe in the hot air bin, the other hot air outlet sends out air heated in the ceramic heat exchanger, and the hot air with different temperatures is respectively conveyed to places needing different temperatures; the hot air furnace can be used for conveying hot air with different temperature gradients, so that the energy consumption is greatly saved, and the hot air use efficiency is improved.
Description
Technical Field
The invention relates to the technical field of thermal power machinery, in particular to a high-efficiency energy-saving multi-temperature-step hot air system.
Background
Through long-term production practices, it has been recognized that the heat utilization and the thermal working effect can be improved more only by using hot air as a medium and a carrier. In the traditional electric heat source and steam heat power, a plurality of circulating fans are often arranged in the conveying process, so that hot air is formed indirectly to be dried or heated. The process obviously has the defects of large energy waste, excessive accessory equipment, complex process and the like. And more so, the requirement of such heat sources for higher temperature drying or baking operations is overwhelming.
At present, coal-fired hot blast stoves are still widely used in many fields such as heating, stoving. Its greatest drawback is that it is neither energy-saving nor environmentally friendly. The main performance is, on the one hand, the hot-blast furnace deposition is serious, and it is also very difficult to clear up in addition, and on the other hand, the flue gas direct discharge of hot-blast furnace, the waste heat of flue gas is useless, and on the other hand, the air-out temperature of traditional hot-blast furnace only has one again, is not suitable for with the use occasion of different temperatures, for example the heating is inequality with the required temperature of stoving.
In addition, in order to quickly reach the required high air temperature, a plurality of hot blast stoves used for traditional blast furnace smelting are often required to be connected in parallel for air supply, so that the occupied area is large, and the construction cost is high.
Therefore, a new hot air system is needed to solve the above problems.
Disclosure of Invention
The invention provides an efficient energy-saving multi-temperature-step hot air system in order to make up the defects of single hot air temperature and high energy consumption in the prior art.
The invention is realized by the following technical scheme:
the utility model provides a hot air system of energy-efficient many temperature ladders, includes hot-blast furnace body, its characterized in that:
the hot blast furnace body is a rectangular hollow furnace body, the interior of the hot blast furnace body is divided into four areas from bottom to top, namely an ash accumulation bin, a combustion bin, a heat exchange bin and a hot blast bin;
the ash accumulation bin is arranged at the bottommost layer of the hot blast furnace body, an ash pit is arranged in the ash accumulation bin, a fire grate is carried above the ash pit, and an automatic ash discharging mechanism is arranged on one side of the ash pit;
the combustion bin is arranged above the ash deposition bin, the side wall of the combustion bin is provided with a plurality of through holes, and the through holes are respectively connected with a coal inlet pipe and a flue gas pipe;
the heat exchange bin is arranged above the combustion bin, and a ceramic heat exchanger is filled in the heat exchange bin;
the hot air bin is arranged at the topmost layer of the hot air furnace body, the heating pipe is installed in the hot air bin, one end of the heating pipe is communicated with the flue gas pipe, the other end of the heating pipe is communicated with the external flue gas recovery device, and the side wall of the hot air bin is provided with a plurality of through holes which are connected with the hot air outlet pipe.
Furthermore, in order to better realize the invention, the automatic dust discharging mechanism comprises a push plate and a hydraulic push rod, the push rod of the hydraulic push rod penetrates through a through hole arranged on the side wall of the dust deposition bin and is fixedly and vertically connected with the push plate, and one surface of the dust deposition bin, which is opposite to the hydraulic push rod, is opened for discharging the deposited dust.
Further, in order to better realize the invention, the flue gas pipe is externally communicated with the heating pipes of the hot blast bin and the combustion bin, or the flue gas pipe penetrates through the ceramic heat exchanger to be communicated with the heating pipes.
Furthermore, in order to better realize the invention, the heating pipe is connected with the flue gas pipe through pipe threads, the heating pipe is arranged in the hot air bin in a serpentine bent manner, and the other end of the heating pipe leaks out of the hot air furnace body and is connected with a flue gas recovery device arranged outside.
Furthermore, in order to better realize the invention, the bottom surface of the ceramic heat exchanger is smooth, a bent single air channel is arranged in the ceramic heat exchanger, one side of the bottom of the ceramic heat exchanger is communicated with a cold air inlet pipe, a heat exchanger air outlet is arranged above the ceramic heat exchanger, and the air outlet is opposite to the inside of the hot air bin.
Further, in order to better realize the invention, the cold air inlet pipe is communicated with a blower outside.
Furthermore, in order to better realize the invention, two hot air outlet pipes are arranged, one hot air outlet pipe is detachably connected with the air outlet of the heat exchanger through a bent pipe, and the other hot air outlet pipe is communicated with the inside of the hot air bin.
Furthermore, in order to better realize the invention, the outer end of the coal inlet pipe is communicated with a hot blast stove coal conveyer.
The invention has the beneficial effects that:
the smoke exhaust pipeline is distributed in the hot air bin at the top layer in a snake shape, so that the waste heat of smoke is fully utilized; two hot air outlets are arranged in the hot air bin, one hot air outlet sends air heated by a flue gas pipe in the hot air bin, the other hot air outlet sends air heated in the ceramic heat exchanger, and hot air with different temperatures is respectively conveyed to places needing different temperatures; the invention uses one hot blast stove to convey hot air with different temperature gradients, thereby greatly saving the energy consumption and improving the use efficiency of the hot air. According to the invention, after the gas conveying device at the bottom is replaced by the gas conveying device, the air temperature can be increased to meet the smelting requirement more quickly through double heating of the ceramic heat exchanger and the heating pipe, and the defect that a plurality of hot blast furnaces are arranged side by side in the traditional mode to occupy space is avoided.
Drawings
FIG. 1 is a schematic view of a high-efficiency energy-saving multi-temperature step hot air system with a top surface and two side surfaces removed;
FIG. 2 is a schematic view of a second embodiment of the present invention showing a high-efficiency, energy-saving, multi-temperature step hot air system with top and two side surfaces removed;
FIG. 3 is a third schematic view of the three-dimensional structure of the high-efficiency energy-saving multi-temperature step hot air system of the present invention;
FIG. 4 is a schematic left-view structural diagram of the high-efficiency energy-saving multi-temperature stepped hot air system of the present invention;
FIG. 5 is a perspective view of the front view of the high efficiency, energy saving, multi-temperature step hot air system of the present invention;
FIG. 6 is a schematic perspective view of an automatic ash discharging mechanism of the high-efficiency energy-saving multi-temperature-step hot air system according to the present invention.
In the figure, the position of the upper end of the main shaft,
1. an ash accumulation bin 101, an ash pit 102, a fire grate 103, an automatic ash discharging mechanism 1031, a push plate 1032 and a hydraulic push rod,
2. a combustion bin 201, a coal inlet pipe 202 and a flue gas pipe,
3. a heat exchange bin 301, a ceramic heat exchanger 302, a cold air inlet pipe 303 and a heat exchanger air outlet,
4. a hot air bin 401, a hot air outlet pipe 402, a heating pipe,
5. a hot blast furnace body.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be noted that the terms "disposed," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Fig. 1 to 6 show a specific embodiment of the present invention, which is a high-efficiency energy-saving multi-temperature-step hot air system, and the main body of the hot air furnace body 5 is a rectangular hollow furnace body, and the interior of the hot air furnace body 5 is divided into four regions from bottom to top, namely, an ash deposition chamber 1, a combustion chamber 2, a heat exchange chamber 3 and a hot air chamber 4.
The ash deposition bin 1 of the embodiment is arranged at the bottommost layer of the hot blast furnace body 5, an ash pit 101 is arranged in the ash deposition bin 1, a grate 102 is mounted above the ash pit 101, and an automatic ash discharging mechanism 103 is arranged on one side of the ash pit 101. The automatic ash discharging mechanism 103 comprises a push plate 1031 and a hydraulic push rod 1032, the push rod of the hydraulic push rod 1032 penetrates through a through hole arranged on the side wall of the ash deposition bin 1, the push plate 1031 is fixedly and vertically connected, one surface of the ash deposition bin 1 opposite to the hydraulic push rod 1032 is opened, and when the ash pit 101 is filled with furnace ash, the hydraulic push rod 1032 pushes the push plate 1031 to push the furnace ash out of the ash deposition bin 1.
The combustion chamber 2 in this embodiment is disposed above the dust deposition chamber 1, and the side wall of the combustion chamber 2 is provided with a plurality of through holes, and the through holes are respectively connected with a coal inlet pipe 201 and a flue gas pipe 202. The flue gas pipe 202 is externally communicated with the heating pipe 402 of the hot blast bin 4 and the combustion bin 2, or the flue gas pipe 202 passes through the ceramic heat exchanger 301 to be communicated with the heating pipe 402. The outer end of the coal inlet pipe (201) is communicated with a hot blast stove coal conveyer.
The heat exchange bin 3 in this embodiment is arranged above the combustion bin 2, and the ceramic heat exchanger 301 is filled in the heat exchange bin 3. Ceramic heat exchanger 301 bottom surface is smooth, and inside is equipped with the single gas circuit of buckling, and ceramic heat exchanger 301's bottom one side intercommunication has cold wind intake pipe 302, and the top is opened has heat exchanger air outlet 303, and air outlet 303 is just to in hot-blast storehouse 4, and cold wind intake pipe 302 externally the intercommunication has the air-blower.
The hot air bin 4 in this embodiment is arranged at the topmost layer of the hot air furnace body 5, a heating pipe 402 is installed in the hot air bin 4, one end of the heating pipe 402 is communicated with the flue gas pipe 202, the other end of the heating pipe is communicated with an external flue gas recovery device, and the side wall of the hot air bin 4 is provided with a plurality of through holes connected with a hot air outlet pipe 401. Wherein, the heating pipe 402 passes through pipe thread connection flue gas pipe 202, and heating pipe 402 is snakelike crooked the arranging in hot-blast storehouse 4, and the heating pipe 402 other end leaks hot-blast furnace body 5 and connects and set up the flue gas recovery unit outside. The hot air outlet pipes 401 are two, one is detachably connected with the heat exchanger air outlet 303 through a bent pipe, the hot air with the highest temperature is sent out, the other is communicated with the inside of the hot air bin 4, and the hot air with the lower temperature is sent out.
The hot blast stove is used in the embodiment, various hot air with different temperature gradients can be sent out, the requirements of workshops at different temperatures can be met, the consumption and the waste of energy sources are greatly saved, and the hot air use efficiency is improved.
In addition, the coal conveying device at the lower half part of the embodiment is replaced by a gas conveying device to be used as a second specific embodiment of the invention, which can provide higher temperature for high-air-temperature smelting work of steel plants, and at the moment, the air temperature in the hot air bin 4 is heated by the bottom ceramic heat exchanger 301 and the heating pipe 402, so that the air temperature can be quickly and efficiently increased under the condition of using minimum gas fuel. The coal gas conveyor of bottom connects hot-blast intelligent control system, can make the interior wind temperature fluctuation of hot-blast storehouse reduce under the numerous condition of heater block in hot-blast storehouse 4, only needs a device, alright in order to provide continuous high-temperature hot-blast for smelting, need not carry hot-blastly like the cooperation of many hot-blast stoves in the traditional mode.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a hot air system of energy-efficient many temperature ladders, includes hot-blast furnace body (5), its characterized in that:
the hot blast furnace body (5) is a rectangular hollow furnace body, the interior of the hot blast furnace body (5) is divided into four regions from bottom to top, namely an ash deposition bin (1), a combustion bin (2), a heat exchange bin (3) and a hot blast bin (4);
the ash accumulation bin (1) is arranged at the bottommost layer of the hot air furnace body (5), an ash pit (101) is arranged in the ash accumulation bin (1), a fire grate (102) is mounted above the ash pit (101), and an automatic ash discharging mechanism (103) is arranged on one side of the ash pit (101);
the combustion bin (2) is arranged above the ash deposition bin (1), the side wall of the combustion bin (2) is provided with a plurality of through holes, and the through holes are respectively connected with a coal inlet pipe (201) and a flue gas pipe (202);
the heat exchange bin (3) is arranged above the combustion bin (2), and the ceramic heat exchanger (301) is filled in the heat exchange bin (3);
the hot air bin (4) is arranged on the topmost layer of the hot air furnace body (5), a heating pipe (402) is installed in the hot air bin (4), one end of the heating pipe (402) is communicated with a flue gas pipe (202), the other end of the heating pipe is communicated with an external flue gas recovery device, and the side wall of the hot air bin (4) is provided with a through hole connected with a hot air outlet pipe (401).
2. The high efficiency, energy saving, multi-temperature step hot air system according to claim 1, wherein: the automatic dust discharging mechanism (103) comprises a push plate (1031) and a hydraulic push rod (1032), the push rod of the hydraulic push rod (1032) penetrates through a through hole formed in the side wall of the dust collecting bin (1), the push plate (1031) is fixedly and vertically connected, and one surface, opposite to the hydraulic push rod (1032), of the dust collecting bin (1) is opened and used for discharging dust.
3. The high efficiency, energy saving, multi-temperature step hot air system according to claim 1, wherein: the flue gas pipe (202) is externally communicated with the hot air bin (4) and the heating pipe (402) of the combustion bin (2), or the flue gas pipe (202) penetrates through the ceramic heat exchanger (301) to be communicated with the heating pipe (402).
4. The high efficiency, energy saving, multi-temperature step hot air system according to claim 3, wherein: the heating pipe (402) is connected with the flue gas pipe (202) through pipe threads, the heating pipe (402) is arranged in the hot air bin (4) in a serpentine bent mode, and the other end of the heating pipe (402) leaks out of the hot air furnace body (5) and is connected with a flue gas recovery device arranged outside.
5. The high efficiency, energy saving, multi-temperature step hot air system according to claim 1, wherein: the bottom surface of the ceramic heat exchanger (301) is smooth, a bent single air channel is arranged inside the ceramic heat exchanger, one side of the bottom of the ceramic heat exchanger (301) is communicated with a cold air inlet pipe (302), a heat exchanger air outlet (303) is formed in the upper portion of the ceramic heat exchanger, and the air outlet (303) is just opposite to the interior of the hot air bin (4).
6. The high efficiency, energy saving, multi-temperature step hot air system according to claim 5, wherein: the cold air inlet pipe (302) is communicated with a blower at the outside.
7. The energy efficient hot blast system according to claim 1 or 5, wherein: and two hot air outlet pipes (401) are arranged, one is detachably connected with the heat exchanger air outlet (303) through a bent pipe, and the other is communicated with the inside of the hot air bin (4).
8. The high efficiency, energy saving, multi-temperature step hot air system according to claim 1, wherein: the outer end of the coal inlet pipe (201) is communicated with a hot blast stove coal conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324293.8A CN110940090A (en) | 2019-12-20 | 2019-12-20 | Efficient energy-saving multi-temperature stepped hot air system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911324293.8A CN110940090A (en) | 2019-12-20 | 2019-12-20 | Efficient energy-saving multi-temperature stepped hot air system |
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