CN211233908U - Aluminum hydroxide roasting furnace, heat energy recovery device thereof and heat taking and discharging pipe thereof - Google Patents
Aluminum hydroxide roasting furnace, heat energy recovery device thereof and heat taking and discharging pipe thereof Download PDFInfo
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- CN211233908U CN211233908U CN201921669058.XU CN201921669058U CN211233908U CN 211233908 U CN211233908 U CN 211233908U CN 201921669058 U CN201921669058 U CN 201921669058U CN 211233908 U CN211233908 U CN 211233908U
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Abstract
The utility model provides an aluminum hydroxide roasting furnace, a heat energy recovery device thereof and a heat taking and blanking pipe thereof, which comprises an aluminum hydroxide feeding device, a drying and preheating device, a roasting furnace and a cooling device which are connected in sequence, the cooling device comprises a cyclone cooler, the cooling device is connected with a heat energy recovery device, it is characterized in that the heat energy recovery device comprises a heat taking blanking pipe arranged at the outlet of the cyclone cooler, a sleeve is arranged in the heat taking and blanking pipe, a heat exchange medium is filled in the sleeve, one end of the sleeve is connected with a heat exchange medium storage device, the other end of the sleeve is connected with an energy consumption device, the sleeve acquires the heat of the material when the material passes through the gap between the sleeve and the blanking pipe and is taken away by the flowing heat exchange medium, the energy consumption device is communicated with the heat exchange medium storage device and is used for solving the technical problem of serious waste of heat energy in the roasting process.
Description
Technical Field
The utility model relates to an aluminium hydroxide bakes burning furnace over a slow fire and heat recovery unit and gets hot unloading pipe thereof.
Background
The roasting of aluminum hydroxide is the last process of aluminum oxide production, the furnace type mainly adopted in the roasting of aluminum hydroxide at present is a gaseous suspension roasting furnace, the roasting temperature is about 900-1150 ℃, the generated high-temperature aluminum oxide is generally cooled by a four-stage cyclone cooler and preheats primary air of a roasting system, the aluminum oxide at the outlet of the four-stage cyclone cooler enters a fluidization cooler, the circulating water is utilized for further cooling, and the circulating water at the outlet of the fluidization cooler is cooled by a cooling tower. The temperature of alumina at the outlet of the final cyclone cooler is about 240-320 ℃, and a large amount of recyclable waste heat is still available. The temperature of water at the outlet of the fluidization cooler is generally 45-55 ℃, the fluidization cooler and circulating water are used for cooling the alumina, and the essence is that the heat energy is discharged into the atmosphere through the circulating water, and a large amount of electric energy is consumed at the same time.
Therefore, how to provide an alumina heat energy recovery device to improve the heat exchange effect of a cyclone cooler system and reduce the temperature of alumina at the inlet of a fluidization cooler so as to realize the waste heat recovery and the recycling of the alumina is a problem to be solved in the field at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aluminium hydroxide bakes burning furnace over a slow fire and heat recovery unit and gets hot unloading pipe thereof to solve the extravagant serious technical problem of heat energy in the calcination process.
The technical scheme of the utility model is realized like this: the utility model provides an aluminium hydroxide bakes burning furnace over a slow fire, includes the aluminium hydroxide feeder, dry preheating device, bakes burning furnace and cooling device who connects gradually, cooling device includes the cyclone, cooling device is connected with heat recovery unit, heat recovery unit is including locating the unloading pipe of getting heat of cyclone export, it is equipped with the sleeve pipe to get the unloading intraductal, and the sleeve pipe intussuseption is filled with heat transfer medium, sleeve pipe one end is connected with heat transfer medium storage device, and the other end is connected with power consumption device, the sleeve pipe obtains the heat of material and is taken away by the heat transfer medium that flows when the material passes through from the clearance between sleeve pipe and the unloading pipe, power consumption device and heat transfer medium storage device intercommunication.
Furthermore, the energy consumption device is an aluminum hydroxide heat exchanger for heating aluminum hydroxide, the heat exchange medium storage device is a water tank, and the water tank is connected with a water pump to keep the heat exchange medium to circularly flow.
Furthermore, the cyclone coolers are arranged in multiple stages, the outlets of each stage of cyclone cooler are provided with heat taking blanking pipes, and the heat taking blanking pipes are connected in series.
Further, aluminium hydroxide feeder includes aluminium hydroxide feed bin, electronic belt conveyor scale and screw feeder, the aluminium hydroxide heat exchanger is located between electronic belt conveyor scale, the screw feeder in order to heat the aluminium hydroxide that comes from electronic belt conveyor scale and carry the aluminium hydroxide after heating to the screw feeder.
Further, the heat exchange medium is heat conduction oil.
The application also discloses a heat recovery device, including locating the hot unloading pipe of getting of whirlwind cooler export, get and be equipped with the sleeve pipe in the unloading pipe of getting hot, the sleeve pipe intussuseption is filled with heat transfer medium, sleeve pipe one end is connected with heat transfer medium storage device, the other end and is connected with power consumption device, the sleeve pipe obtains the heat of material and is taken away by the heat transfer medium that flows when the clearance between sleeve pipe and the unloading pipe is passed through to the material, power consumption device and heat transfer medium storage device intercommunication.
Further, the sleeve is cylindrical.
Further, the heat exchange medium is heat conduction oil.
The application also discloses get hot unloading pipe, feed inlet, discharge gate including the outer tube and locating the outer tube both ends, its characterized in that, be equipped with the sleeve pipe in the outer tube, sleeve pipe and outer tube inner wall contactless, the sleeve pipe both ends are equipped with sleeve pipe import pipe, sleeve pipe outlet pipe respectively, sleeve pipe import pipe, sleeve pipe outlet pipe extend to the outer tube outside and with outer tube fixed connection.
Further, the sleeve is cylindrical.
By adopting the technical scheme, the beneficial effects of the utility model are that: the utility model discloses an aluminium hydroxide bakes burning furnace over a slow fire owing to adopted and be equipped with interior sheathed tube unloading pipe, has retrieved the partial heat energy of aluminium oxide, has reduced the temperature of last cyclone cooler export aluminium oxide, has increased the aluminium hydroxide heat exchanger before aluminium hydroxide screw feeder, makes the aluminium oxide heat energy of retrieving be used for heating aluminium hydroxide, has reduced aluminium hydroxide roasting system's fuel consumption, has reduced fluidization cooler circulating water system's cooling load simultaneously.
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 aluminum hydroxide roasting furnace according to the present invention;
fig. 2 is a schematic structural view of the heat-extracting blanking tube of the present invention.
Wherein: the system comprises a heat taking blanking pipe 1, an aluminum hydroxide heat exchanger 2, a water tank 3, a water pump 4, a dead steam discharging device 5, an aluminum hydroxide bin 6, an electronic belt scale 7, a screw feeder 8, a Venturi dryer 9, a primary cyclone preheater 10, a secondary cyclone preheater 11, a tertiary cyclone preheater 12, a roasting furnace 13, a primary cyclone cooler 14, a secondary cyclone cooler 15, a tertiary cyclone cooler 16, a quaternary cyclone cooler 17, an air inlet 18, a feeding hole 20, an outer pipe 21, a discharging hole 22, a sleeve inlet pipe 23, a sleeve 24 and a sleeve outlet pipe 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment 1 of an aluminum hydroxide roasting furnace comprises an aluminum hydroxide 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, the cooling device is connected with a heat energy recovery device, the heat energy recovery device comprises a heat taking blanking pipe arranged at an outlet of the cyclone cooler, a sleeve pipe is arranged in the heat taking blanking pipe, a heat exchange medium is filled in the sleeve pipe, one end of the sleeve pipe is connected with a heat exchange medium storage device, the other end of the sleeve pipe is connected with an energy consumption device, the sleeve pipe obtains heat of materials when the materials pass through a gap between the sleeve pipe and the blanking pipe and is taken away by flowing heat exchange medium, and the energy consumption device is communicated with the heat exchange medium storage device so that a closed loop is formed by a passage.
An embodiment 2 of an aluminum hydroxide roasting furnace comprises an aluminum hydroxide feeding device, a drying preheating device, a roasting furnace and a cooling device which are sequentially connected as shown in figure 1-2, wherein the cooling device comprises a cyclone cooler, the cooling device is connected with a heat energy recovery device, the heat energy recovery device comprises a heat taking blanking pipe arranged at an outlet of the cyclone cooler, a sleeve pipe is arranged in the heat taking blanking pipe, a heat exchange medium is filled in the sleeve pipe, one end of the sleeve pipe is connected with a heat exchange medium storage device, the other end of the sleeve pipe is connected with an energy consumption device, the sleeve pipe obtains the heat of a material when the material passes through a gap between the sleeve pipe and the heat taking blanking pipe and is taken away by the flowing heat exchange medium, the energy consumption device is communicated with the heat exchange medium storage device to enable the passage of the heat exchange medium to form a closed loop, the energy consumption device, the water tank is connected with the water pump in order to keep the circulation flow of heat transfer medium, and the cyclone cooler is multistage setting, the export of each grade cyclone cooler all is equipped with gets hot unloading pipe, get series connection between the hot unloading pipe, aluminium hydroxide feeder includes aluminium hydroxide feed bin, weighs electron belt conveyor scale and the screw feeder of aluminium hydroxide, aluminium hydroxide heat exchanger is located and carries to the screw feeder with the aluminium hydroxide that comes from electron belt conveyor scale with the heating between electron belt conveyor scale, the screw feeder after will heating, and heat transfer medium is the conduction oil, and heat transfer medium storage device is the water tank, and dry preheating device includes the venturi desicator.
An embodiment 1 of a heat energy recovery device is shown in fig. 1-2 and comprises a heat taking blanking pipe arranged at an outlet of a cyclone cooler, wherein a sleeve is arranged in the heat taking blanking pipe, a heat exchange medium is filled in the sleeve, one end of the sleeve is connected with a heat exchange medium storage device, the other end of the sleeve is connected with an energy consumption device, the sleeve acquires heat of a material when the material passes through a gap between the sleeve and the blanking pipe and is taken away by flowing heat exchange medium, the energy consumption device is communicated with the heat exchange medium storage device, the sleeve is cylindrical, and the heat exchange medium is heat conduction oil.
An embodiment 1 of a heat-taking blanking tube is shown in fig. 1-2 and comprises an outer tube, and a feeding port and a discharging port which are arranged at two ends of the outer tube, wherein a sleeve is arranged in the outer tube, the sleeve is not in contact with the inner wall of the outer tube, a sleeve inlet tube and a sleeve outlet tube are respectively arranged at two ends of the sleeve, the sleeve inlet tube and the sleeve outlet tube extend to the outer side of the outer tube and are fixedly connected with the outer tube, and the sleeve is cylindrical.
In another embodiment, referring to fig. 1 and fig. 2, the present invention discloses an aluminum hydroxide baking furnace, which comprises a heat-collecting blanking pipe 1, an aluminum hydroxide heat exchanger 2, a water tank 3, a water pump 4, a steam exhaust discharging device 5, a baking furnace 13, an aluminum hydroxide feeding device, a drying preheating device and an aluminum oxide cooling device.
The aluminum hydroxide feeding device comprises an aluminum hydroxide bin 6, an electronic belt scale 7 and a screw feeder 8. The drying and preheating device comprises a Venturi dryer 9, a primary cyclone preheater 10, a secondary cyclone preheater 11 and a tertiary cyclone preheater 12. The alumina cooling device comprises a primary cyclone cooler 14, a secondary cyclone cooler 15, a tertiary cyclone cooler 16 and a quaternary cyclone cooler 17.
The material aluminium hydroxide is discharged by aluminium hydroxide feed bin 6, gets into aluminium hydroxide heat exchanger 2 after 7 weighing measurement of electron belt weigher, and rethread screw feeder 8 send into venturi dryer 9, and the material is carried into one-level cyclone preheater 10 and second grade cyclone preheater 11 in proper order by the high temperature flue gas, then gets into roasting furnace 13 and roasts, produces aluminium oxide after the calcination. Specifically, the production flow of the aluminum oxide sequentially passes through a roasting furnace 13, a three-stage cyclone preheater 16, a first-stage cyclone cooler 14, a heat taking blanking pipe 1, a second-stage cyclone cooler 15, a heat taking blanking pipe 1, a three-stage cyclone cooler 16, a heat taking blanking pipe 1, a four-stage cyclone cooler 17 and a heat taking blanking pipe 1, the aluminum oxide is crossed to exchange heat with air and water in the heat taking blanking pipe, and the aluminum oxide at the outlet of the four-stage cyclone cooler 17 is discharged through the heat taking blanking pipe 1.
The outlet of the water tank 3 is connected with the inlet of the water pump 4, the outlet of the water pump 4 is connected with the internal sleeve inlet pipe 23 of the heat taking blanking pipe 1 at the bottom of the four-stage cyclone cooler 17, the internal sleeve outlet pipe 25 of the heat taking blanking pipe 1 at the bottom of the four-stage cyclone cooler 17 is connected with the internal sleeve inlet pipe 23 of the heat taking blanking pipe 1 at the bottom of the three-stage cyclone cooler 16, the internal sleeve outlet pipe 25 of the heat taking blanking pipe 1 at the bottom of the three-stage cyclone cooler 16 is connected with the internal sleeve inlet pipe 23 of the heat taking blanking pipe 1 at the bottom of the two-stage cyclone cooler 15, the internal sleeve outlet pipe 25 of the heat taking blanking pipe 1 at the bottom of the two-stage cyclone cooler 15 is connected with the internal sleeve inlet pipe 23 of the heat taking blanking pipe 1 at the bottom of the one-stage cyclone cooler 14, and the internal sleeve. The exhaust steam discharging port of the aluminum hydroxide heat exchanger 2 is connected with an exhaust steam discharging device 5, the outlet of the exhaust steam discharging device 5 is connected with the outlet of the primary cyclone preheater 10, and the exhaust steam discharging device 5 is a pressure release valve used for reducing the pressure in the pipeline.
In other embodiments, the heat exchange medium may also be water.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an aluminium hydroxide bakes burning furnace over a slow fire, includes the aluminium hydroxide feeder, dry preheating device, bakes burning furnace and cooling device who connects gradually, cooling device includes the cyclone, cooling device is connected with heat recovery unit, its characterized in that, heat recovery unit is including locating the unloading pipe of getting heat of cyclone export, it is equipped with the sleeve pipe to get the unloading intraductal, and the sleeve pipe intussuseption is filled with heat transfer medium, sleeve pipe one end is connected with heat transfer medium storage device, and the other end is connected with power consumption device, the sleeve pipe obtains the heat of material and is taken away by mobile heat transfer medium when the material passes through from the clearance between sleeve pipe and the unloading pipe, power consumption device and heat transfer medium storage device intercommunication.
2. The aluminum hydroxide roasting furnace of claim 1, wherein the energy consuming device is an aluminum hydroxide heat exchanger for heating aluminum hydroxide, and the heat exchange medium storage device is a water tank to which a water pump is connected to maintain a circulating flow of the heat exchange medium.
3. The aluminum hydroxide roasting furnace of claim 2, wherein the cyclone coolers are arranged in multiple stages, and the outlet of each stage of cyclone cooler is provided with a heat-taking blanking pipe which is connected in series.
4. The aluminum hydroxide roasting furnace of claim 3, wherein the aluminum hydroxide feeding device comprises an aluminum hydroxide bin, an electronic belt scale and a screw feeder, and the aluminum hydroxide heat exchanger is positioned between the electronic belt scale and the screw feeder to heat the aluminum hydroxide from the electronic belt scale and convey the heated aluminum hydroxide to the screw feeder.
5. The aluminum hydroxide roasting furnace of claim 4, wherein the heat transfer medium is a thermal oil.
6. The heat energy recovery device is characterized by comprising a heat taking blanking pipe arranged at the outlet of a cyclone cooler, wherein a sleeve is arranged in the heat taking blanking pipe, a heat exchange medium is filled in the sleeve, one end of the sleeve is connected with a heat exchange medium storage device, the other end of the sleeve is connected with an energy consumption device, the sleeve acquires the heat of a material when the material passes through a gap between the sleeve and the blanking pipe and is taken away by the flowing heat exchange medium, and the energy consumption device is communicated with the heat exchange medium storage device.
7. The thermal energy recovery device of claim 6 wherein the sleeve is cylindrical.
8. The heat energy recovery device of claim 7, wherein the heat exchange medium is a heat transfer oil.
9. The utility model provides a get hot unloading pipe, includes the outer tube and locates feed inlet, the discharge gate at outer tube both ends, its characterized in that, be equipped with the sleeve pipe in the outer tube, the sleeve pipe is contactless with the outer tube inner wall, the sleeve pipe both ends are equipped with sleeve pipe import pipe, sleeve pipe outlet pipe respectively, sleeve pipe import pipe, sleeve pipe outlet pipe extend to the outer tube outside and with outer tube fixed connection.
10. The heat removal down tube of claim 9, wherein the sleeve is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669058.XU CN211233908U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide roasting furnace, heat energy recovery device thereof and heat taking and discharging pipe thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669058.XU CN211233908U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide roasting furnace, heat energy recovery device thereof and heat taking and discharging pipe thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211233908U true CN211233908U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921669058.XU Active CN211233908U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide roasting furnace, heat energy recovery device thereof and heat taking and discharging pipe thereof |
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| Country | Link |
|---|---|
| CN (1) | CN211233908U (en) |
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- 2019-10-08 CN CN201921669058.XU patent/CN211233908U/en active Active
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