CN209763775U - Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat utilization device thereof - Google Patents
Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat utilization device thereof Download PDFInfo
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- CN209763775U CN209763775U CN201920329145.4U CN201920329145U CN209763775U CN 209763775 U CN209763775 U CN 209763775U CN 201920329145 U CN201920329145 U CN 201920329145U CN 209763775 U CN209763775 U CN 209763775U
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Abstract
The utility model relates to a baking furnace equipment is baked over a slow fire in gaseous suspension of aluminium hydroxide and waste heat utilization equipment thereof. The aluminum hydroxide gaseous suspension roasting furnace equipment comprises a feeding device, a drying preheating device, a roasting furnace and a cooling device which are sequentially connected, wherein the cooling device comprises a cyclone cooler which is arranged in a multistage manner, the outer wall of the cyclone cooler which is at least provided with one stage is provided with a heat exchange water pipe for carrying out heat exchange with the cyclone cooler, and the inlet and the outlet of the heat exchange water pipe are respectively connected with a heat exchange medium storage device and an energy consumption device. The outer wall of the cyclone cooler of at least one stage of the roasting furnace equipment of the aluminum hydroxide gaseous suspension furnace is provided with the heat exchange water pipe, the heat inside the cyclone cooler can be recovered by using a heat exchange medium, and the heat exchange medium after temperature rise is supplied to an energy consumption device as a heating medium, so that waste heat recovery in the production process is realized, and the loss of heat energy in the roasting process is reduced.
Description
Technical Field
The utility model relates to a baking furnace equipment is baked over a slow fire in gaseous suspension of aluminium hydroxide and waste heat utilization equipment thereof.
Background
Currently, in the industrial production system of alumina, a roasting furnace is used as the last step in the production process, and the aluminum hydroxide is roasted to remove crystal water therein and form the final sand-like alumina product. The furnace type mainly adopted in China is a gaseous suspension roasting furnace, the roasting temperature is generally controlled to be 1000-1100 ℃, and the temperature of a high-temperature region of a combustion chamber of the roasting furnace is as high as more than 1600 ℃, so that qualified metallurgical-grade aluminum oxide products can be produced.
Chinese patent application publication No. CN107606949A, publication No. 2018.01.19 discloses a low-temperature roasting device for an aluminum hydroxide gaseous suspension roasting furnace, which comprises a roasting furnace, a drying preheating device and a cooling device, wherein at least two material distributors are arranged at a feed inlet of the roasting furnace, the drying preheating device comprises a dryer, a primary cyclone preheater, a secondary cyclone preheater and a tertiary cyclone preheater, the cooling device comprises a primary cyclone cooler, a secondary cyclone cooler, a tertiary cyclone cooler and a quaternary cyclone cooler, the material is sent into the dryer through a screw feeder to be dried, the material enters the primary cyclone preheater to be separated after being removed of attached water in the dryer, then is preheated by flue gas from the tertiary cyclone preheater in the secondary cyclone preheater and is removed of part of crystal water, the material enters the roasting furnace through the material distributors, and the material is roasted in the roasting furnace to form a finished product, the finished product is cooled by the first-stage cyclone cooler, the second-stage cyclone cooler, the third-stage cyclone cooler and the fourth-stage cyclone cooler, and due to the fact that the number of the material distributors is increased, the uniformity of the material entering the roasting furnace is improved, the material can be fully contacted with the heat of combustion, the reaction time of the material is prolonged, and the temperature of the roasting furnace is further reduced.
However, the low-temperature roasting device of the aluminum hydroxide gaseous suspension roasting furnace consumes a large amount of energy in the roasting process, and wastes a lot of heat, so that how to recycle the heat generated in the roasting process is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a roasting furnace device of an aluminum hydroxide gaseous suspension furnace, which can recover the excessive heat in the roasting process of the aluminum hydroxide; the utility model aims at providing a waste heat utilization equipment of aluminium hydroxide gaseous state suspension furnace roasting furnace equipment still.
In order to achieve the technical purpose, the utility model discloses the gaseous suspension furnace roasting furnace equipment of aluminium hydrate adopts technical scheme as follows: the aluminum hydroxide gaseous suspension roasting furnace equipment comprises a feeding device, a drying preheating device, a roasting furnace and a cooling device which are sequentially connected, wherein the cooling device comprises a cyclone cooler which is arranged in a multistage manner, the outer wall of the cyclone cooler which is at least provided with one stage is provided with a heat exchange water pipe used for carrying out heat exchange with the cyclone cooler, the inlet of the heat exchange water pipe is connected with a heat exchange medium storage device, and the outlet of the heat exchange water pipe is connected with an energy consumption device.
Preferably, the heat exchange water pipe is spirally and circularly arranged on the outer wall of the cyclone cooler.
Preferably, the cooling device comprises a first-stage cyclone cooler, a second-stage cyclone cooler, a third-stage cyclone cooler and a fourth-stage cyclone cooler which are communicated in sequence, and the heat exchange water pipe is arranged on the fourth-stage cyclone cooler.
Preferably, the heat exchange medium storage device comprises a water tank, the heat exchange medium in the water tank is water, an outlet of the water tank is in conduction connection with an inlet of the heat exchange water pipe, and at least two water pumps are arranged in parallel on a water path between the outlet of the water tank and the inlet of the heat exchange water pipe.
Preferably, the energy consumption device is a flat disc filter, and an outlet of the heat exchange water pipe is communicated with a washing inlet of the flat disc filter.
Preferably, an exhaust device is arranged at the outlet of the heat exchange water pipe.
The utility model discloses burning furnace equipment is baked over a slow fire to aluminium oxide gaseous state suspension stove has following beneficial effect: the outer wall of the cyclone cooler of at least one stage of the roasting furnace equipment of the aluminum hydroxide gaseous suspension furnace is provided with the heat exchange water pipe, the heat inside the cyclone cooler can be recovered by using a heat exchange medium, and the heat exchange medium after temperature rise is supplied to an energy consumption device as a heating medium, so that waste heat recovery in the production process is realized, and the loss of heat energy in the roasting process is reduced.
The utility model discloses the technical scheme that the waste heat utilization equipment of aluminium hydroxide gaseous state suspension furnace roasting furnace equipment adopted is as follows: the waste heat utilization device of the aluminum hydroxide gaseous suspension roasting furnace equipment comprises an energy consumption device and a heat exchange water pipe used for exchanging heat with at least one stage of cyclone cooler, wherein an inlet of the heat exchange water pipe is connected with a heat exchange medium storage device, and an outlet of the heat exchange water pipe is connected with the energy consumption device.
Preferably, the heat exchange water pipe has a spiral structure for surrounding the cyclone cooler outer wall.
Preferably, the heat exchange medium storage device comprises a water tank, the heat exchange medium in the water tank is water, an outlet of the water tank is in conduction connection with an inlet of the heat exchange water pipe, and at least two water pumps are arranged in parallel on a water path between the outlet of the water tank and the inlet of the heat exchange water pipe.
Preferably, the energy consumption device is a flat disc filter, and an outlet of the heat exchange water pipe is communicated with a washing inlet of the flat disc filter.
Preferably, an exhaust device is arranged at the outlet of the heat exchange water pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of an embodiment 1 of the aluminum hydroxide gas suspension roasting furnace apparatus of the present invention.
Description of reference numerals: 1. roasting furnace; 2. a distributor; 3. a dryer; 4, a first-stage cyclone preheater; 5. a secondary cyclone preheater; 6. a tertiary cyclone preheater; 7. a primary cyclone cooler; 8. a secondary cyclone cooler; 9. a tertiary cyclone cooler; 10. a four-stage cyclone cooler; 11. a heat exchange water pipe; 12. a water pump; 13. a water tank; 14. a flat disc filter; 15. and an exhaust device.
Detailed Description
The present invention is described in detail below with reference to specific embodiments and drawings, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict, and the present invention is not limited thereto.
The utility model discloses embodiment 1 of burning furnace equipment is baked over a slow fire in aluminium hydroxide gaseous state suspension, as shown in figure 1, this aluminium hydroxide gaseous state suspension bakes over a slow fire the furnace equipment and includes dry preheating device, bakes over a slow fire 1 and cooling device, still includes the waste heat utilization device, and cooling device is including the cyclone that is multistage setting, and the waste heat utilization device includes that energy consumption device and the cyclone that carries out the heat exchange with the cyclone of at least one-level 11, the entry linkage of heat exchange water pipe 11 has heat transfer medium storage device, and the exit linkage of heat exchange water pipe has the power consumption dress, and energy consumption device has the power consumption pipe with the export intercommunication of heat exchange water pipe 11 in order to recycle heat energy, and the export of power consumption pipe forms heat transfer circulation with.
In the embodiment, the drying preheating device, the roasting furnace 1 and the cooling device are sequentially connected, the drying preheating device comprises a dryer 3, the dryer 3 is further in conduction connection with a primary cyclone preheater 4, the primary cyclone preheater 4 is in conduction connection with a secondary cyclone preheater 5, the secondary cyclone preheater 5 is in conduction connection with a tertiary cyclone preheater 6, and the secondary cyclone preheater 5 is in conduction connection with the feeding hole of the roasting furnace 1 through two material distributors 2; the cooling device comprises a first-stage cyclone cooler 7, a second-stage cyclone cooler 8, a third-stage cyclone cooler 9 and a fourth-stage cyclone cooler 10 which are sequentially communicated, the first-stage cyclone cooler 7 is connected with a discharge hole of the roasting furnace 1, a heat exchange water pipe 11 is spirally arranged on the outer wall of the cyclone cooler in a surrounding mode, and the heat exchange water pipe 11 is positioned on the middle upper portion of the fourth-stage cyclone cooler 10.
In this embodiment, the energy consumption device is a flat disc filter 14, the heat exchange medium storage device includes a water tank 13, the heat exchange medium in the water tank 13 is water, an outlet of the water tank 13 is in conduction connection with an inlet of the heat exchange water pipe 11, two water pumps 12 are arranged in parallel on a water path between the water tank 13 and the inlet of the heat exchange water pipe 11, an exhaust device 15 is arranged at an outlet of the heat exchange water pipe, and the exhaust device 15 exhausts the water path between the outlet of the heat exchanger and the energy consumption device.
The utility model discloses aluminium hydroxide gaseous suspension bakes burning furnace equipment during practical application, the material gets into one-level cyclone preheater 4 and carries out gas-solid separation after desorption attaches water in desicator 3, the material after the gas-solid separation gets into second grade cyclone preheater 5 and is preheated and desorption part crystal water by the flue gas that third cyclone preheater 6 came into after, get into through tripper 2 and bake burning furnace 1 over a slow fire, the material bakes in burning furnace 1 over a slow fire and forms the finished product, the finished product passes through one-level cyclone cooler 7 in proper order, second grade cyclone cooler 8, third grade cyclone cooler 9 and level four cyclone cooler 10 are cooled down, because be equipped with heat transfer water pipe 11 on the outer wall of level four cyclone cooler 10, heat transfer water pipe 11 is as heat-conducting medium by the water that the water tank provided, the heat of the inside material of level four cyclone cooler 10 has been retrieved, make the ejection of compact temperature of material, the waste heat recovery device is used as a washing medium of the flat disc filter 14, thereby realizing the recovery and the reutilization of the waste heat in the production process and reducing the loss of the heat energy in the roasting process.
The utility model discloses embodiment 2 of baking furnace equipment is baked over a slow fire in aluminium hydroxide gaseous state suspension, with embodiment 1's difference lie in, heat transfer medium storage device can be the batch oil tank, and the heat transfer medium in the batch oil tank is the conduction oil, and power consumption device can be for utilizing the heating device of the conduction oil heating other article that heaies up.
In other embodiments, the primary cyclone cooler, the secondary cyclone cooler and the tertiary cyclone cooler can be provided with waste heat utilization devices; or the first-stage cyclone cooler, the second-stage cyclone cooler and the third-stage cyclone cooler can be provided with waste heat utilization devices on two stages; or one of the first-stage cyclone cooler, the second-stage cyclone cooler and the third-stage cyclone cooler can be also provided with a waste heat utilization device.
The utility model discloses the embodiment of the waste heat utilization equipment of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state, this waste heat utilization equipment of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state and the aforesaid the utility model discloses the structure of the waste heat utilization equipment in arbitrary embodiment of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state is the same, no longer repeated explanation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides an aluminium hydroxide gaseous state suspension roasting furnace equipment, includes the feed arrangement, dry preheating device, roasts burning furnace and the cooling device who connects gradually, cooling device is including the cyclone cooler who is multistage setting, its characterized in that: the outer wall of the cyclone cooler with at least one stage is provided with a heat exchange water pipe for exchanging heat with the cyclone cooler, the inlet of the heat exchange water pipe is connected with a heat exchange medium storage device, and the outlet of the heat exchange water pipe is connected with an energy consumption device.
2. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, characterized in that: the heat exchange water pipe is spirally arranged on the outer wall of the cyclone cooler in a surrounding manner.
3. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, characterized in that: the cooling device comprises a first-stage cyclone cooler, a second-stage cyclone cooler, a third-stage cyclone cooler and a fourth-stage cyclone cooler which are sequentially communicated, and the heat exchange water pipe is arranged on the fourth-stage cyclone cooler.
4. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, 2 or 3, characterized in that: the heat exchange medium storage device comprises a water tank, the heat exchange medium in the water tank is water, an outlet of the water tank is in conduction connection with an inlet of the heat exchange water pipe, and at least two water pumps are arranged in parallel on a water path between the outlet of the water tank and the inlet of the heat exchange water pipe.
5. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, 2 or 3, characterized in that: the energy dissipation device is a flat disc filter, and an outlet of the heat exchange water pipe is communicated with a washing inlet of the flat disc filter.
6. The utility model provides a waste heat utilization equipment of aluminium hydroxide gaseous suspension roasting furnace equipment which characterized in that: the heat exchange device comprises an energy consumption device and a heat exchange water pipe used for exchanging heat with at least one stage of cyclone cooler, wherein an inlet of the heat exchange water pipe is connected with a heat exchange medium storage device, and an outlet of the heat exchange water pipe is connected with the energy consumption device.
7. The residual heat utilization device of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 6, characterized in that: the heat exchange water pipe is provided with a spiral structure which is arranged on the outer wall of the cyclone cooler in a surrounding mode.
8. The residual heat utilization device of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 6 or 7, characterized in that: the heat exchange medium storage device comprises a water tank, the heat exchange medium in the water tank is water, an outlet of the water tank is in conduction connection with an inlet of the heat exchange water pipe, and at least two water pumps are arranged in parallel on a water path between the outlet of the water tank and the inlet of the heat exchange water pipe.
9. The residual heat utilization device of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 6 or 7, characterized in that: the energy dissipation device is a flat disc filter, and an outlet of the heat exchange water pipe is communicated with a washing inlet of the flat disc filter.
10. The residual heat utilization device of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 6 or 7, characterized in that: and an exhaust device is arranged at the outlet of the heat exchange water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329145.4U CN209763775U (en) | 2019-03-15 | 2019-03-15 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat utilization device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329145.4U CN209763775U (en) | 2019-03-15 | 2019-03-15 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat utilization device thereof |
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| Publication Number | Publication Date |
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| CN209763775U true CN209763775U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920329145.4U Active CN209763775U (en) | 2019-03-15 | 2019-03-15 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat utilization device thereof |
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| CN (1) | CN209763775U (en) |
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- 2019-03-15 CN CN201920329145.4U patent/CN209763775U/en active Active
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