CN210030076U - Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof - Google Patents
Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof Download PDFInfo
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- CN210030076U CN210030076U CN201920329456.0U CN201920329456U CN210030076U CN 210030076 U CN210030076 U CN 210030076U CN 201920329456 U CN201920329456 U CN 201920329456U CN 210030076 U CN210030076 U CN 210030076U
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Abstract
The utility model relates to an aluminium hydroxide gaseous state suspension bakes burning furnace equipment over a slow fire and waste heat recovery utilizes device 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 tube for carrying out heat exchange with the cyclone cooler, the inlet and the outlet of the heat exchange tube are respectively connected with a heat exchange medium storage device and an energy dissipation device, the energy dissipation device is provided with an energy dissipation tube which is communicated with the outlet of the heat exchange tube so as to recycle heat energy, and the outlet of the energy dissipation tube is communicated with the inlet of the. The heat exchange medium in the heat exchange tube recovers the internal heat of the cyclone cooler, the heat exchange medium after being heated serves as a heating medium to be supplied to the energy consumption device, and the heat exchange medium after being cooled by the energy consumption device enters the heat exchange tube again to form heat exchange circulation, so that the consumption of the heat exchange medium is reduced.
Description
Technical Field
The utility model relates to an aluminium hydroxide gaseous state suspension bakes burning furnace equipment over a slow fire and waste heat recovery utilizes device 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 at 1000-fold-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 recovery utilizes device 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 with at least one stage is provided with a heat exchange tube for carrying out heat exchange with the cyclone cooler, the inlet and the outlet of the heat exchange tube are respectively connected with a heat exchange medium storage device and an energy consumption device, the energy consumption device is provided with an energy consumption tube which is communicated with the outlet of the heat exchange tube so as to recycle heat energy, and the outlet of the energy consumption tube is communicated with the inlet of the heat exchange tube to form heat exchange.
Preferably, the heat exchange tube 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 tube is arranged on the fourth-stage cyclone cooler.
Preferably, the heat transfer medium storage device includes the batch oil tank, and the heat transfer medium in the batch oil tank is the conduction oil, the export of batch oil tank with the entry turn-on connection of heat exchange tube, parallelly connected expansion tank and the oil supply pump that is used for adjusting the oil pressure that is provided with on the oil circuit between the export of batch oil tank and the entry of heat exchange tube.
Preferably, a circulating oil pump is arranged on an oil path between the outlet of the energy consumption pipe and the inlet of the heat exchange pipe.
Preferably, the feeding device comprises a rotary tube array dryer, a feeding bin, a conveying belt and a spiral feeding machine which are connected in sequence, an outlet of the spiral feeding machine is communicated with the roasting furnace, and the energy consumption device is formed by the rotary tube array dryer.
The utility model discloses following beneficial effect has: the outer wall of at least one stage of cyclone cooler of the roasting furnace equipment of the aluminum hydroxide gaseous suspension furnace is provided with a heat exchange tube, the internal heat of the cyclone cooler can be recovered by using a heat exchange medium, and the heat exchange medium after temperature rise is used as a heating medium to be supplied to an energy consumption device, so that the waste heat recovery in the production process is realized; the heat exchange medium cooled by the energy consumption device enters the heat exchange tube again to form a heat exchange cycle, so that the consumption of the heat exchange medium is reduced.
The utility model discloses the technical scheme that waste heat recovery who adopts of aluminium hydroxide gaseous state suspension furnace roasting furnace equipment as follows: the waste heat recycling device of the aluminum hydroxide gaseous suspension roasting furnace equipment comprises an energy consumption device and a heat exchange tube used for exchanging heat with at least one stage of cyclone cooler, wherein an inlet and an outlet of the heat exchange tube are respectively connected with a heat exchange medium storage device and the energy consumption device, the energy consumption device is provided with an energy consumption tube communicated with the outlet of the heat exchange tube to recycle heat energy, and the outlet of the energy consumption tube is communicated with the inlet of the heat exchange tube to form a heat exchange cycle.
Preferably, the heat exchange tube has a spiral structure for being circumferentially disposed on an outer wall of the cyclone cooler.
Preferably, the heat transfer medium storage device includes the batch oil tank, and the heat transfer medium in the batch oil tank is the conduction oil, the export of batch oil tank with the entry intercommunication of heat exchange tube, parallelly connected being provided with expansion tank and the oil supply pump that are used for adjusting the oil pressure on the oil circuit between the export of batch oil tank and the entry of heat exchange tube.
Preferably, a circulating oil pump is arranged on an oil path between the energy consumption pipe and the heat exchange pipe.
Preferably, the energy consumption device is a spiral tube drier.
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 example 1 of an apparatus for an aluminum hydroxide gaseous suspension roasting furnace according to the present invention;
FIG. 2 is a schematic structural view of example 3 of the aluminum hydroxide gas suspension roasting furnace apparatus of the present invention;
description of reference numerals: 1. roasting furnace; 2. a distributor; 3. rotating the tube nest dryer; 4. a feeding bin; 5. a conveyor belt; 6. a screw feeder; 7. a dryer; 8. a primary cyclone preheater; 9. a secondary cyclone preheater; 10. a tertiary cyclone preheater; 11. a primary cyclone cooler; 12. a secondary cyclone cooler; 13. a tertiary cyclone cooler; 14. a four-stage cyclone cooler; 15. a heat exchange pipe; 16. a circulating oil pump; 17. an oil replenishing pump; 18. an oil storage tank; 19. an expansion tank; 20. a heating 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 fig. 1, this aluminium hydroxide gaseous state suspension bakes over a slow fire the furnace equipment and includes feed arrangement, dry preheating device, bake over a slow fire 1 and cooling device, still include waste heat recovery and utilization device, cooling device is including the cyclone that is multistage setting, waste heat recovery and utilization device includes that power consumption device and the heat exchange tube 15 that carries out the heat exchange with the cyclone of at least one-level, the entry and the export of heat exchange tube 15 are connected with heat transfer medium storage device and power consumption device respectively, power consumption device has the power consumption pipe with the export intercommunication of heat exchange tube 15 in order to recycle heat energy, the export of power consumption pipe forms heat transfer circulation with the.
In this embodiment, the feeding device, the drying and preheating device, the roasting furnace 1 and the cooling device are sequentially connected, the feeding device comprises a rotary tube array dryer 3 and a feeding bin 4 connected with the rotary tube array dryer 3, the feeding bin 4 is connected with a conveying belt 5, and the conveying belt 5 is connected with a screw feeder; the drying and preheating device comprises a dryer 7, the dryer 7 is connected with an outlet of the spiral feeding machine, the dryer 7 is also in conductive connection with a primary cyclone preheater 8, the primary cyclone preheater 8 is in conductive connection with a secondary cyclone preheater 9, the secondary cyclone preheater 9 is in conductive connection with a tertiary cyclone preheater 10, and the secondary cyclone preheater 9 is in conductive connection with a feeding hole of the roasting furnace 1 through two material distributors 2; the cooling device comprises a first-stage cyclone cooler 11, a second-stage cyclone cooler 12, a third-stage cyclone cooler 13 and a fourth-stage cyclone cooler 14 which are sequentially communicated, the first-stage cyclone cooler 11 is connected with a discharge hole of the roasting furnace 1, a heat exchange tube 15 is spirally arranged on the outer wall of the cyclone cooler in a surrounding mode, and the heat exchange tube 15 is positioned on the middle upper portion of the fourth-stage cyclone cooler 14.
In this embodiment, the energy consumption device is a rotary tube dryer 3, the heat exchange medium storage device comprises an oil storage tank 18, the heat exchange medium in the oil storage tank 18 is heat conduction oil, an outlet of the oil storage tank 18 is in conduction connection with an inlet of the heat exchange tube 15, an expansion tank 19 and an oil supplementing pump 17 for adjusting oil pressure are arranged in parallel on an oil path between the oil storage tank 18 and the inlet of the heat exchange tube 15, and two oil supplementing pumps 17 are arranged in parallel; a circulating oil pump 16 is arranged on an oil path between the outlet of the energy consumption pipe and the inlet of the heat exchange pipe 15; two circulating oil pumps 16 are provided in parallel. The expansion tank 19 and the oil replenishing pump 17 can adjust the oil pressure of the circulating oil circuit according to actual conditions, and the heat conducting oil in the expansion tank 19 can also overflow to the oil storage tank 18.
The utility model discloses aluminium hydroxide gaseous suspension bakes burning furnace equipment during practical application, the material gets into feeding bin 4 after rotatory tube dryer 3 is dried, the material in feeding bin 4 is criticized through carrying again and is carried to screw feeder 6, screw feeder 6 sends the material into desicator 7 internal drying again, the material gets into one-level cyclone preheater 8 and carries out gas-solid separation after desorption in desicator 7, the material after gas-solid separation gets into second grade cyclone preheater 9 and is preheated and desorption part crystal water by the flue gas that comes from third grade cyclone preheater 10 after, get into through tripper 2 and bake burning furnace 1, the material bakes in baking furnace 1 and forms the finished product, the finished product passes through one-level cyclone cooler 11 in proper order, second grade cyclone cooler 12, third grade cyclone cooler 13 and the cooling of level four cyclone cooler 14, because be equipped with heat exchange tube 15 on the outer wall of level four cyclone cooler 14, the heat exchange tube 15 provides heat conduction oil as a heat conduction medium from the oil storage tank, the heat of the material inside the four-stage cyclone cooler 14 is recovered, the discharging temperature of the material is reduced, the temperature of the heat conduction oil discharged from the outlet of the heat exchange tube 15 is increased, and the heat conduction oil is supplied to the rotary tube array dryer 3 as a heating medium for use, so that the recovery and the reutilization of waste heat in the production process are realized, the temperature of the heat conduction oil discharged from the rotary tube array dryer 3 is reduced, and then the heat conduction oil enters the heat exchange tube 15 from the inlet of the heat exchange tube 15 to form heat exchange circulation, so.
The utility model discloses embodiment 2 of the gaseous suspension roasting furnace equipment of aluminium hydrate, with embodiment 1's difference lie in, heat transfer medium storage device can be the water tank, and the heat transfer medium in the water tank is water.
The utility model discloses embodiment 3 of aluminium hydroxide gaseous state suspension roaster furnace equipment, as shown in fig. 2, with embodiment 1's difference lies in, the heating device 20 that power consumption device can be for utilizing the conduction oil heating of heaing up to heat other article.
In other embodiments, the primary cyclone cooler, the secondary cyclone cooler and the tertiary cyclone cooler can be provided with waste heat recycling devices; or the first-stage cyclone cooler, the second-stage cyclone cooler and the third-stage cyclone cooler can be provided with waste heat recycling 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 provided with a waste heat recycling device.
The utility model discloses the embodiment of the waste heat recovery device of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state, this waste heat recovery device of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state and the aforesaid the utility model discloses waste heat recovery device in arbitrary embodiment of burning furnace equipment is baked in the suspension of aluminium hydroxide gaseous state's structure 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 cyclone cooler comprises at least one cyclone cooler, a heat exchange tube used for exchanging heat with the cyclone cooler is arranged on the outer wall of the cyclone cooler at least one stage, an inlet and an outlet of the heat exchange tube are respectively connected with a heat exchange medium storage device and an energy dissipation device, the energy dissipation device is provided with an energy dissipation tube communicated with the outlet of the heat exchange tube to recycle heat energy, and the outlet of the energy dissipation tube is communicated with the inlet of the heat exchange tube to form a heat exchange cycle.
2. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, characterized in that: the heat exchange tubes are 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 tube 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 an oil storage tank, wherein heat exchange media in the oil storage tank are heat conduction oil, an outlet of the oil storage tank is in conduction connection with an inlet of the heat exchange tube, and an expansion tank and an oil supplementing pump which are used for adjusting oil pressure are arranged on an oil way between the outlet of the oil storage tank and the inlet of the heat exchange tube in parallel.
5. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, 2 or 3, characterized in that: and a circulating oil pump is arranged on an oil path between the outlet of the energy consumption pipe and the inlet of the heat exchange pipe.
6. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 1, 2 or 3, characterized in that: the feeding device comprises a rotary tube array dryer, a feeding bin, a conveying belt and a spiral feeding machine which are sequentially connected, an outlet of the spiral feeding machine is communicated with the roasting furnace, and the energy consumption device is formed by the rotary tube array dryer.
7. The utility model provides a waste heat recovery utilizes device of aluminium hydroxide gaseous state suspension roasting furnace equipment which characterized in that: the heat exchange tube comprises an energy consumption device and a heat exchange tube used for exchanging heat with at least one stage of cyclone cooler, wherein an inlet and an outlet of the heat exchange tube are respectively connected with a heat exchange medium storage device and the energy consumption device, the energy consumption device is provided with an energy consumption tube communicated with the outlet of the heat exchange tube to recycle heat energy, and the outlet of the energy consumption tube is communicated with the inlet of the heat exchange tube to form a heat exchange cycle.
8. The apparatus for recycling waste heat of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 7, wherein: the heat exchange tube is provided with a spiral structure which is arranged on the outer wall of the cyclone cooler in a surrounding mode.
9. The apparatus for recycling waste heat of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 7 or 8, wherein: the heat exchange medium storage device comprises an oil storage tank, wherein heat exchange media in the oil storage tank are heat conduction oil, an outlet of the oil storage tank is communicated with an inlet of the heat exchange tube, and an expansion tank and an oil supplementing pump which are used for adjusting oil pressure are arranged in parallel on an oil way between the outlet of the oil storage tank and the inlet of the heat exchange tube.
10. The apparatus for recycling waste heat of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 7 or 8, wherein: and a circulating oil pump is arranged on an oil path between the energy consumption pipe and the heat exchange pipe.
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| CN201920329456.0U CN210030076U (en) | 2019-03-15 | 2019-03-15 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824073A (en) * | 2019-03-15 | 2019-05-31 | 河南科达东大国际工程有限公司 | Gas suspension calcination of aluminium hydroxide furnace apparatus and its waste heat recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824073A (en) * | 2019-03-15 | 2019-05-31 | 河南科达东大国际工程有限公司 | Gas suspension calcination of aluminium hydroxide furnace apparatus and its waste heat recovery device |
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