CN211233986U - 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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- CN211233986U CN211233986U CN201921669835.0U CN201921669835U CN211233986U CN 211233986 U CN211233986 U CN 211233986U CN 201921669835 U CN201921669835 U CN 201921669835U CN 211233986 U CN211233986 U CN 211233986U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model provides a baking furnace equipment is baked over a slow fire in aluminium hydroxide gaseous state suspension and waste heat recovery utilizes device thereof, bake the furnace body over a slow fire in aluminium hydroxide gaseous state suspension, the cyclone cooler that the furnace body is including being multistage setting is baked over a slow fire in aluminium hydroxide gaseous state suspension, the cyclone cooler export is equipped with the high temperature alumina heat exchanger that is used for with the heat transfer of high temperature alumina, the export of high temperature alumina heat exchanger, entry all communicate in the steam pocket, the steam pocket is equipped with water inlet, steam outlet, power consumption device is connected to the steam outlet for solve and carry out waste heat recovery's technical problem with output vapor.
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
At present, in the industrial production process of aluminum oxide, aluminum hydroxide roasting is one of the processes with the most energy consumption and the highest production cost as the last process in the production flow, and the energy consumption of the roasting process is about 10 percent of the total energy consumption. The furnace type mainly adopted in China is a gaseous suspension roasting furnace, and the roasting temperature is generally controlled at 1000-1100 ℃. The roasted high-temperature alumina is cooled to about 250 ℃ after countercurrent heat exchange with cold air by a four-stage cyclone cooler, and a large amount of high-grade heat is not effectively utilized in the cooling process. The high grade heat can be utilized to generate low pressure steam. Meanwhile, the production workshop for producing the alumina has the processes needing low-pressure steam, such as the dissolving process needing steam to heat dissolving ore pulp, the evaporating process needing steam to evaporate circulating mother liquor and the like. Therefore, how to better utilize the heat brought out by the high-temperature alumina becomes an important direction for energy conservation and consumption reduction.
The invention discloses aluminum hydroxide gaseous suspension roasting furnace equipment and a waste heat recycling device thereof, which are named as 'aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof', application publication numbers are CN109824073A, application publication numbers are 2019, 05 and 31, and the invention 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 multi-stage manner, the outer wall of the cyclone cooler at least at 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 for recycling heat energy, and the. The hot water, which is not the steam, is output to the energy consumption device, and the hot water cannot be used for the process of producing alumina production workshop requiring low-pressure steam.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aluminium hydroxide gaseous state suspension bakes burning furnace equipment over a slow fire and waste heat recovery utilizes device thereof to solve and carry out waste heat recovery's technical problem with output vapor.
The technical scheme of the utility model is realized like this: the waste heat recycling device of the aluminum hydroxide gaseous suspension roasting furnace equipment comprises a high-temperature aluminum oxide heat exchanger which is arranged at an outlet of a cyclone cooler and used for exchanging heat with high-temperature aluminum oxide, wherein an outlet and an inlet of the high-temperature aluminum oxide heat exchanger are both communicated with a steam drum, the steam drum is provided with a water inlet and a steam outlet, and the steam outlet is connected with an energy consumption device.
Furthermore, the steam pocket is provided with a liquid level adjusting device, and the liquid level adjusting device comprises a liquid level sensor for measuring the water level in the steam pocket, a valve for controlling the water inflow of the water inlet, and a control module for adjusting the opening of the valve according to the liquid level information of the liquid level sensor, so as to keep the water amount in the steam pocket within a certain range.
Furthermore, the water is softened water, a water pump is arranged at the water inlet, and the water pump is connected with a water tank.
Further, the high-temperature alumina heat exchanger is a spiral tube type heat exchanger.
Furthermore, the high-temperature alumina heat exchanger is arranged on a blanking pipe at the outlet of the cyclone cooler.
The application still provides a baking furnace equipment is baked over a slow fire in aluminium hydroxide gaseous state suspension, including the baking furnace body is baked over a slow fire in aluminium hydroxide gaseous state suspension, the baking furnace body is baked over a slow fire in aluminium hydroxide gaseous state suspension is including the cyclone cooler that is multistage setting, the cyclone cooler export is equipped with the high temperature alumina heat exchanger that is used for with the heat transfer of high temperature alumina, the export of high temperature alumina heat exchanger, entry all communicate in the steam pocket, the steam pocket is equipped with water inlet, steam discharge port, power consumption device is connected to the steam discharge port.
Furthermore, the steam pocket is provided with a liquid level adjusting device, and the liquid level adjusting device comprises a liquid level sensor for measuring the water level in the steam pocket, a valve for controlling the water inflow of the water inlet, and a control module for adjusting the opening of the valve according to the liquid level information of the liquid level sensor, so as to keep the water amount in the steam pocket within a certain range.
Furthermore, the water is softened water, a water pump is arranged at the water inlet, and the water pump is connected with a water tank.
Further, the high-temperature alumina heat exchanger is a spiral tube type heat exchanger.
Furthermore, the high-temperature alumina heat exchanger is arranged on a blanking pipe at the outlet of the cyclone cooler.
By adopting the technical scheme, the beneficial effects of the utility model are that: this waste heat recovery of aluminium hydroxide gaseous state suspension roasting furnace equipment utilizes the process that the waste heat that obtains high temperature aluminium oxide produced low pressure steam and supplies the production aluminium oxide workshop to need low pressure steam to use, has both reduced former boiler gas production volume, can reduce the temperature of cyclone cooler export aluminium oxide again to reduce fluidized bed cooler heat transfer volume, reduce fluidized bed equipment and drop into.
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 the present invention;
wherein: 1. A water tank; 2. a water pump; 3. a steam drum; 4. a high temperature alumina heat exchanger; 5. a small aluminum hydroxide bin; 6. an electronic belt scale; 7. a screw feeder; 8. a dryer; 9. a primary cyclone preheater; 10. a secondary cyclone preheater; 11. a tertiary cyclone preheater; 12. roasting furnace; 13. a primary cyclone cooler; 14. a secondary cyclone cooler; 15. a tertiary cyclone cooler; 16. a four-stage cyclone cooler; 20. a water inlet; 21. steam outlet, 22, energy consumption device.
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 a waste heat recycling device of an aluminum hydroxide gaseous suspension roasting furnace device comprises a high-temperature alumina heat exchanger 4 arranged at an outlet of a cyclone cooler 13 and used for exchanging heat with high-temperature alumina, wherein the outlet and the inlet of the high-temperature alumina heat exchanger are both communicated with a steam drum 3, the steam drum is provided with a water inlet 20 and a steam outlet 21, and the steam outlet is connected with an energy consumption device 22, as shown in fig. 1.
An embodiment 2 of a waste heat recycling device of an aluminum hydroxide gaseous suspension roasting furnace device comprises a high-temperature aluminum oxide heat exchanger 4 arranged at an outlet of a cyclone cooler 13 and used for exchanging heat with high-temperature aluminum oxide, wherein the outlet and the inlet of the high-temperature aluminum oxide heat exchanger are both communicated with a steam drum 3, the steam drum is provided with a water inlet 20 and a steam outlet 21, the steam outlet is connected with an energy consumption device 22, the steam drum is provided with a liquid level adjusting device, the liquid level adjusting device comprises a liquid level sensor used for measuring the water level in the steam drum, a valve used for controlling the water inlet amount of the water inlet, and a control module used for adjusting the valve opening according to the liquid level information of the liquid level sensor so as to keep the water amount in the steam drum within.
An embodiment 3 of a waste heat recycling device of an aluminum hydroxide gaseous suspension roasting furnace device comprises a high-temperature alumina heat exchanger 4 arranged at an outlet of a cyclone cooler 13 and used for exchanging heat with high-temperature alumina, wherein the outlet and the inlet of the high-temperature alumina heat exchanger are both communicated with a steam drum 3, the steam drum is provided with a water inlet 20 and a steam outlet 21, the steam outlet is connected with an energy consumption device 22, the steam drum is provided with a liquid level adjusting device which comprises a liquid level sensor for measuring the water level in the steam drum, a valve for controlling the water inlet amount of the water inlet and a control module, the device is characterized in that the water quantity in the steam pocket is kept within a certain range, the water is softened water, a water pump 2 is arranged at a water inlet, the water pump is connected with a water tank 1, the high-temperature alumina heat exchanger is a spiral tube type heat exchanger, and the high-temperature alumina heat exchanger is arranged on a discharging pipe at the outlet of the cyclone cooler.
An embodiment 1 of an aluminum hydroxide gaseous suspension roasting furnace device comprises an aluminum hydroxide gaseous suspension roasting furnace body, wherein the aluminum hydroxide gaseous suspension roasting furnace body comprises a cyclone cooler which is arranged in a multistage manner, a high-temperature aluminum oxide heat exchanger 4 used for exchanging heat with high-temperature aluminum oxide is arranged at an outlet of the cyclone cooler, an outlet and an inlet of the high-temperature aluminum oxide heat exchanger are both communicated with a steam pocket 3, the steam pocket is provided with a water inlet 20 and a steam outlet 21, and the steam outlet is connected with an energy consumption device 22.
An embodiment 2 of an aluminum hydroxide gaseous suspension roasting furnace device comprises an aluminum hydroxide gaseous suspension roasting furnace body, as shown in fig. 1, the aluminum hydroxide gaseous suspension roasting furnace body comprises a cyclone cooler which is arranged in a multistage manner, an outlet of the cyclone cooler is provided with a high-temperature aluminum oxide heat exchanger 4 for exchanging heat with high-temperature aluminum oxide, an outlet and an inlet of the high-temperature aluminum oxide heat exchanger are both communicated with a steam pocket 3, the steam pocket is provided with a water inlet 20 and a steam outlet 21, the steam outlet is connected with an energy consumption device 22, the steam pocket is provided with a liquid level adjusting device, the liquid level adjusting device comprises a liquid level sensor for measuring the water level in the steam pocket, a valve for controlling the water inlet amount of the water inlet, and a control module for adjusting the valve opening according to the liquid level information of the liquid level sensor, so as to keep the water amount in the steam pocket within a certain range, the high-temperature alumina heat exchanger is a spiral tube type heat exchanger and is arranged on a blanking pipe at the outlet of the cyclone cooler.
In other embodiments, the high-temperature alumina heat exchanger is arranged on the conical part of the cyclone cooler, and because the flow speed of the high-temperature alumina on the conical part of the cyclone cooler is low, the scouring abrasion of the high-temperature alumina heat exchanger caused by the high-speed flow of the alumina can be avoided. Similarly, the flow speed of the blanking pipe at the outlet of the cyclone cooler is also lower, and the high-temperature alumina heat exchanger is arranged on the blanking pipe at the outlet of the cyclone cooler to avoid the scouring and abrasion of the high-temperature alumina heat exchanger caused by the high-speed flow of alumina.
In other embodiments, the energy consuming device may be other steam pipes requiring heat tracing or a plant requiring heating.
In other embodiments, the cyclone coolers in the multi-stage arrangement include a primary cyclone cooler 13, a secondary cyclone cooler 14, a tertiary cyclone cooler 15, and a quaternary cyclone cooler 16.
In other embodiments, the high temperature alumina heat exchanger may also be a shell and tube heat exchanger or a double tube heat exchanger.
The aforesaid uses control module adjustment valve to open and close according to level sensor's liquid level information is prior art, like the utility model patent that the name that discloses among the prior art is "automatically controlled formula water level control valve", and the grant bulletin number is CN 203784309U, and the grant bulletin date is 2014.08.20, no longer gives details here.
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 waste heat recycling device of the aluminum hydroxide gaseous suspension roasting furnace equipment comprises a high-temperature aluminum oxide heat exchanger which is arranged at an outlet of a cyclone cooler and used for exchanging heat with high-temperature aluminum oxide, and is characterized in that the outlet and the inlet of the high-temperature aluminum oxide heat exchanger are both communicated with a steam drum, the steam drum is provided with a water inlet and a steam outlet, and the steam outlet is connected with an energy consumption device.
2. The apparatus for recycling waste heat from an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 1, wherein the steam drum is provided with a liquid level adjusting device, the liquid level adjusting device comprises a liquid level sensor for measuring the water level in the steam drum, a valve for controlling the water inlet amount, and a control module for adjusting the valve opening according to the liquid level information of the liquid level sensor, so as to keep the water amount in the steam drum within a certain range.
3. The apparatus for recycling waste heat of an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 2, wherein the water is softened water, the water inlet is provided with a water pump, and the water pump is connected with a water tank.
4. The apparatus for recycling waste heat from an aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 3, wherein the high temperature alumina heat exchanger is a spiral tube heat exchanger.
5. The apparatus for recycling the waste heat of the aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 4, wherein the high temperature alumina heat exchanger is disposed on the feeding pipe of the outlet of the cyclone cooler.
6. The aluminum hydroxide gaseous suspension roasting furnace equipment comprises an aluminum hydroxide gaseous suspension roasting furnace body, wherein the aluminum hydroxide gaseous suspension roasting furnace body comprises a cyclone cooler which is arranged in a multistage manner, and an outlet of the cyclone cooler is provided with a high-temperature aluminum oxide heat exchanger for exchanging heat with high-temperature aluminum oxide.
7. An aluminum hydroxide gaseous suspension roasting furnace apparatus according to claim 6, wherein the steam drum is provided with a liquid level adjusting device, and the liquid level adjusting device comprises a liquid level sensor for measuring the water level in the steam drum, a valve for controlling the water inlet amount, and a control module for adjusting the valve opening according to the liquid level information of the liquid level sensor so as to keep the water amount in the steam drum within a certain range.
8. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 7, wherein the water is softened water, and the water inlet is provided with a water pump, and the water pump is connected with a water tank.
9. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 8, wherein the high temperature alumina heat exchanger is a spiral tube heat exchanger.
10. An aluminium hydroxide gaseous suspension roasting furnace apparatus according to claim 9, wherein the high temperature alumina heat exchanger is provided on the down pipe at the outlet of the cyclone cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669835.0U CN211233986U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669835.0U CN211233986U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN211233986U true CN211233986U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921669835.0U Active CN211233986U (en) | 2019-10-08 | 2019-10-08 | Aluminum hydroxide gaseous suspension roasting furnace equipment and waste heat recycling device thereof |
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| CN (1) | CN211233986U (en) |
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