CN115029735A - New energy consumption-oriented aluminum electric heating heat balance regulation and control device and method - Google Patents
New energy consumption-oriented aluminum electric heating heat balance regulation and control device and method Download PDFInfo
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 110
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 230000033228 biological regulation Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005485 electric heating Methods 0.000 title claims description 15
- 238000004321 preservation Methods 0.000 claims abstract description 44
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000005265 energy consumption Methods 0.000 claims abstract description 15
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 12
- 238000005260 corrosion Methods 0.000 claims description 12
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims 2
- 206010037660 Pyrexia Diseases 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 25
- 238000010248 power generation Methods 0.000 abstract description 8
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- 238000004364 calculation method Methods 0.000 description 2
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- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/20—Automatic control or regulation of cells
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Abstract
An aluminum electroheating heat balance regulation and control device and method for new energy consumption comprises a double-layer closed aluminum electrolytic cell, wherein the double-layer closed aluminum electrolytic cell comprises a first heat preservation cover and a second heat preservation cover, the top of the double-layer closed aluminum electrolytic cell and the outer side of the second heat preservation cover are also provided with a third heat preservation cover, when the aluminum electrolytic cell consumes unstable new energy, a detection end of an anode current detection device carries out real-time monitoring on the working current of the aluminum electrolytic cell, and transmits a fluctuation signal of the detected current to a flue gas flow regulation and control module through a controller, the flue gas flow regulation and control module converts the fluctuation of the current into gas flow, and the regulation of the gas flow is realized by controlling an exhaust flow control valve, an inlet flow regulating valve and a fan to act, so that the capacity of the aluminum electrolytic cell for resisting large current fluctuation is increased, and the flexible operation of the electrolytic cell is realized, and provides a solution for the consumption of new energy power generation, and is beneficial to the green, low-carbon and intelligent development of the aluminum electrolysis industry.
Description
Technical Field
The invention relates to a new energy consumption-oriented aluminum electric heating heat clearing balance regulation and control device and method.
Background
The new energy generally refers to renewable energy developed and utilized on the basis of new technology. Generally solar energy, wind energy, geothermal energy, hydrogen energy, etc. The widely used energy sources such as coal, oil, natural gas and water energy are called conventional energy sources. With the limited nature of conventional energy and the increasing prominence of environmental issues, new energy characterized by environmental protection and regeneration is gaining more and more attention all over the world. The new energy power generation is to convert new energy into electric energy so as to realize sustainable development of resources. Although the power generation capacity of new energy sources is increased year by year, the power generation capacity is not stable due to the change of seasons, weather and the like of most new energy sources, and the power transmission and adjustment capacity of a power grid is limited, so that the new energy sources are not effectively consumed.
Aluminum electrolysis is a high-energy-consumption industry which is extremely dependent on electric power resources, the main power consumption source of the current aluminum electrolysis industry is thermal power and hydroelectric power generation, the power consumption price is high, and the electric power cost accounts for nearly 50%. In recent years, the loss of aluminum electrolysis enterprises is extremely serious, and the whole industry is in a state of low enthusiasm, so that the improvement of current efficiency, the reduction of energy consumption or the search for cheaper electric power resources can be said to be an effective way for the development of the aluminum electrolysis industry.
From the view point of heat income and expenditure of the aluminum electrolytic cell, the heat income of the aluminum electrolytic cell mainly comes from the joule heat of the electrolyte melt, and the heat dissipation of the electrolytic cell is mainly concentrated on the upper covering material, the steel claws and the lateral cell shells of the electrolytic cell, wherein the upper heat dissipation accounts for about 50 percent of the total heat dissipation, and the lateral cell shells account for about 35 percent of the total heat dissipation. When the aluminum electrolytic cell consumes new energy, the heat income of the electrolytic cell is changed due to the instability of the consumed electric quantity, the heat balance of the electrolytic cell is damaged, and the aluminum electrolytic cell is difficult to stably operate.
Disclosure of Invention
The invention provides a new energy consumption-oriented aluminum electric heating balance regulation and control device and method which are used for overcoming the defects of the prior art and increasing the current fluctuation resistance of an aluminum electrolytic cell and realizing the flexible operation of the electrolytic cell.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
an aluminum electrolysis heat balance regulation and control device for new energy consumption comprises a double-layer closed aluminum electrolytic cell, wherein the double-layer closed aluminum electrolytic cell is composed of an aluminum electrolytic cell, a first heat-preservation cover and a second heat-preservation cover, the first heat-preservation cover and the second heat-preservation cover are sequentially arranged on the top of the aluminum electrolytic cell from inside to outside, the opening on the top of the aluminum electrolytic cell is sealed by the first heat-preservation cover, a third heat-preservation cover is further arranged on the outer side of the second heat-preservation cover on the top of the double-layer closed aluminum electrolytic cell, a sealed space is arranged between the first heat-preservation cover and the aluminum electrolytic cell to form a high-temperature smoke area, a sealed space is arranged between the first heat-preservation cover and the second heat-preservation cover to form a low-temperature smoke area, a sealed space is arranged between the second heat-preservation cover and the third heat-preservation cover to form a heat exchange area, and a first exhaust port, a second exhaust port and a third exhaust port are respectively arranged on the first heat-preservation cover, the second heat-preservation cover and the third heat-preservation cover, the air conditioner is characterized in that independent fans are respectively installed on the first exhaust port, the second exhaust port and the third exhaust port, air outlets of the fans on the first exhaust port, the second exhaust port and the third exhaust port are communicated with the outside through exhaust pipelines, exhaust flow control valves are installed in the exhaust pipelines, and an air inlet flow adjusting valve used for controlling air inflow is installed on one side, opposite to the third exhaust port, of the third heat-insulating cover.
In this embodiment, the intake flow regulating valve includes a valve body and a valve core, the third heat-insulating cover is provided with an intake port, the valve body includes a baffle fixed on the intake port and a plurality of fan-shaped openings provided on the baffle, and the plurality of fan-shaped openings are symmetrically arranged on the baffle with a central axis of the intake port as a symmetry axis; the fan-shaped opening is provided with a fan-shaped ventilating plate, and the fan-shaped ventilating plate is densely provided with air holes; the valve core comprises a plurality of fan-shaped sealing plates corresponding to the fan-shaped opening positions, the fan-shaped sealing plates are fixed on a rotating shaft, the rotating shaft is installed on the baffle through a bearing, the rotating shaft is coaxially arranged with the central shaft of the air inlet, the rotating shaft is driven to rotate through a motor, and when the gas flow control valve is in a closed state, the fan-shaped sealing plates are just arranged on the fan-shaped opening to seal the fan-shaped opening.
In this embodiment, the side wall of the double-layer closed aluminum electrolysis cell is further provided with an artificial side ledge, the artificial side ledge is sequentially provided with a corrosion-resistant layer, a first flat heat pipe and a second flat heat pipe from the inside of the aluminum electrolysis cell cavity to the side wall direction of the aluminum electrolysis cell, the working temperature of working media in the first flat heat pipe is 900-930 ℃, the working temperature of working media in the second flat heat pipe is 400-500 ℃, the outer side wall of the double-layer closed aluminum electrolysis cell is further provided with a heat dissipation system, and the heat dissipation system is respectively communicated with the first flat heat pipe and the second flat heat pipe through pipelines.
In this embodiment, the thickness of the artificial side ledge is 140mm, the thickness of the first flat heat pipe and the thickness of the second flat heat pipe are both 50mm, and the thickness of the corrosion-resistant layer is 40 mm.
In the embodiment, the first and second flat heat pipes are matched with the shape of the ledge in the aluminum electrolytic cell, and the gaps between the first flat heat pipe and the second flat heat pipe and between the second flat heat pipe and the side wall of the aluminum electrolytic cell are bonded by corrosion-resistant materials, so that the artificial ledge forms a whole.
In this embodiment, still include the controller and the positive pole current detection device, flue gas flow regulation and control module, cooling system and the temperature sensor who is connected with the controller, the sense terminal of positive pole current detection device and the positive pole of double-deck airtight aluminium cell are connected, temperature sensor sets up in double-deck airtight aluminium cell, the control end and the exhaust flow control valve of flue gas flow regulation and control module, inlet flow governing valve and fan electricity are connected.
The invention also comprises a new energy consumption-oriented aluminum electric heating heat balance regulation and control method, and the specific control method by utilizing the new energy consumption-oriented aluminum electric heating heat balance regulation and control device is as follows: when the aluminum electrolytic cell consumes unstable new energy, the detection end of the anode current detection device monitors the working current of the aluminum electrolytic cell in real time, and transmits a fluctuation signal of the detected current to the flue gas flow regulation and control module through the controller, and the flue gas flow regulation and control module converts the fluctuation of the current into the change of gas flow to control the action of the exhaust flow control valve, the inlet flow regulation valve and the fan.
In the present embodiment, the method of converting the fluctuation of the current into the gas flow rate is as follows:
in the formula V Regulating flow The gas flow rate to be adjusted; v Reference flow rate Is the gas flow at the reference temperature; t is Detection of The current detected when new energy is consumed is large; t is Datum The current magnitude under the reference current; eta is a constant.
Compared with the prior art, the invention has the following beneficial effects:
1. most of the existing aluminum electrolysis cells are large aluminum electrolysis cells with the current intensity of over 300kA, the design of the electrolysis cells mainly uses the stable current intensity of the electrolysis cells to operate, when the current fluctuates greatly, the heat balance of the electrolysis cells needs to be reestablished, the process needs to take longer time, and the stable operation of the electrolysis cells is damaged. If the current fluctuation of the electrolytic cell continuously occurs, great challenges are brought to the continuous and stable operation of the electrolytic cell, and even safety problems can occur. The invention firstly provides a heat balance adjusting method based on a fully-closed electrolytic cell, which can comprehensively control the heat balance of the electrolytic cell through two parts, namely flue gas flow and artificial side ledge, realize real-time and rapid establishment of new heat balance according to current fluctuation signals, is favorable for the electrolytic cell to resist the instability of operation caused by current fluctuation, and also realizes the flexible operation of the electrolytic cell: when the current is increased, the heat dissipation of the electrolytic cell is increased in real time; when the current is reduced, the heat dissipation of the electrolytic cell is reduced in real time.
2. The change of the furnace wall thickness is a main factor influencing the heat balance of the electrolytic cell, and the traditional aluminum electrolytic cell needs to establish new heat balance through the solidification or melting of the furnace wall when the current fluctuates. The adjustable artificial side ledge is adopted in the invention, so that the time for establishing thermal balance by solidifying or melting the traditional furnace ledge is greatly reduced, and the thermal balance of the electrolytic cell is favorably and quickly adjusted.
3. The traditional aluminum electrolysis cell proposes that the heat balance of the electrolysis cell is adjusted only by adjusting the flue gas flow of the electrolysis cell or installing a heat exchange device on the lateral cell shell of the electrolysis cell. Aiming at the method for regulating the flue gas flow, as the traditional electrolytic cell has poor tightness, most heat is dissipated from the gap of the cover plate of the cell, the flue gas temperature is low, and the effect on heat balance regulation is small; the invention divides the flue gas of the electrolytic cell, intensively controls the heat and the flow of the flue gas, and increases the effectiveness of regulating the heat balance of the flue gas of the electrolytic cell. By arranging the artificial lateral ledge, the real-time adjustment of the internal heat balance of the electrolytic cell can be realized.
4. After the aluminum electrolytic cell realizes flexible operation through the invention, the new energy power generation with higher electricity abandonment rate can be absorbed, the proportion of thermal power generation used by the electrolytic cell is reduced, and the low-carbon operation of the aluminum electrolytic cell is realized from the electric energy supply side. Meanwhile, the electrolytic cell uses cheap new energy power to save cost for the aluminum electrolysis industry.
In conclusion, the invention is beneficial to increasing the current fluctuation resistance of the aluminum electrolysis cell, realizing the flexible operation of the aluminum electrolysis cell, providing a solution for the consumption of new energy for power generation and being beneficial to the green, low-carbon and intelligent development of the aluminum electrolysis industry.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the intake flow rate regulating valve body according to the present invention;
FIG. 3 is a schematic structural view of a valve core of the intake flow control valve of the present invention;
FIG. 4 is a schematic view of the construction of the artificial side ledge of the present invention.
In the figure, 1, a double-layer closed aluminum electrolytic cell; 2. a controller; 3. an anode current detection device; 4. a flue gas flow regulation and control module; 11. a first heat-insulating cover; 12. a second heat-insulating cover; 13. a third heat-preserving cover; 14. a heat dissipation system; 15. an artificial side ledge; 151. a corrosion-resistant layer; 152. a first flat heat pipe; 153. a second flat heat pipe; 16. a temperature sensor; 17. an intake flow rate regulating valve; 171. a baffle plate; 172. a fan-shaped ventilation plate; 173. a sector sealing plate; 174. a rotating shaft; 111. a first exhaust port; 121. a second exhaust port; 131. a third exhaust port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 4, the invention provides an aluminum electric heating balance regulation and control device facing new energy consumption, which comprises a double-layer closed aluminum electrolytic cell 1, wherein the double-layer closed aluminum electrolytic cell 1 has the same structure as the double-layer closed aluminum electrolytic cell 1 mentioned in patent No. 202110006024.8, the double-layer closed aluminum electrolytic cell 1 comprises an aluminum electrolytic cell and a first heat preservation cover 11 and a second heat preservation cover 12 which are arranged on the top of the aluminum electrolytic cell in sequence from inside to outside, the first heat preservation cover 11 seals an opening on the top of the aluminum electrolytic cell, the top of the double-layer closed aluminum electrolytic cell 1 and the outer side of the second heat preservation cover 12 are also provided with a third heat preservation cover 13, a sealed space is arranged between the first heat preservation cover 11 and the aluminum electrolytic cell to form a high-temperature smoke region, a sealed space is arranged between the first heat preservation cover 11 and the second heat preservation cover 12 to form a low-temperature smoke region, and a sealed space is arranged between the second heat preservation cover 12 and the third heat preservation cover 13 to form a heat exchange region, the first heat-preserving cover 11, the second heat-preserving cover 12 and the third heat-preserving cover 13 are respectively provided with a first exhaust port 111, a second exhaust port 121 and a third exhaust port 131, the first exhaust port 111, the second exhaust port 121 and the third exhaust port 131 are respectively provided with an independent fan, air outlets of the fans on the first exhaust port 111, the second exhaust port 121 and the third exhaust port 131 are communicated with the outside through exhaust pipelines, exhaust flow control valves are arranged in the exhaust pipelines, and an intake flow regulating valve 17 for controlling the intake air amount is arranged on one side of the third heat-preserving cover 13 opposite to the third exhaust port 131;
the air inlet flow regulating valve 17 comprises a valve body and a valve core, an air inlet is formed in the third heat-insulating cover 13, the valve body comprises a baffle plate 171 fixed on the air inlet and a plurality of fan-shaped openings formed in the baffle plate 171, and the fan-shaped openings are symmetrically distributed on the baffle plate 171 by taking the central axis of the air inlet as a symmetry axis; the fan-shaped opening is provided with a fan-shaped ventilating plate 172, and the fan-shaped ventilating plate 172 is densely provided with air holes, and the diameter of each air hole is 5 cm; the valve core comprises a plurality of fan-shaped sealing plates 173 corresponding to the positions of the fan-shaped openings, the fan-shaped sealing plates 173 are fixed on a rotating shaft 174, the rotating shaft 174 is mounted on a baffle 171 through a bearing, the rotating shaft 174 is coaxially arranged with the central shaft of the air inlet, the rotating shaft 174 is driven to rotate through a motor, when the gas flow control valve is in a closed state, the fan-shaped sealing plates 173 are just arranged on the fan-shaped openings to seal the fan-shaped openings, the area of the fan-shaped openings is shielded through rotating the rotating shaft 174 to adjust the size of the fan-shaped openings, and therefore the air inflow is adjusted.
The side wall of the double-layer closed aluminum electrolytic cell 1 is further provided with an artificial side ledge 15, the artificial side ledge 15 is sequentially provided with an anti-corrosion layer 151, a first flat heat pipe 152 and a second flat heat pipe 153 from the inner cavity of the aluminum electrolytic cell to the side wall direction of the aluminum electrolytic cell, the anti-corrosion layer 151 is composed of corundum and cryolite, the working temperature of working medium in the first flat heat pipe 152 is 900-930 ℃, the working temperature of working medium in the second flat heat pipe 153 is 400-500 ℃, the outer side wall of the double-layer closed aluminum electrolytic cell 1 is further provided with a heat dissipation system 14, and the heat dissipation system 14 is respectively communicated with the first flat heat pipe 152 and the second flat heat pipe 153 through pipelines.
The thickness of the artificial side ledge 15 is 140mm, the thickness of the first and second flat heat pipes 153 is 50mm, and the thickness of the corrosion-resistant layer 151 is 40 mm. The first and second flat heat pipes 153 are matched with the shape of the internal ledge of the aluminum electrolytic cell, and the gaps between the first flat heat pipe 152 and the second flat heat pipe 153 and between the second flat heat pipe 153 and the side wall of the aluminum electrolytic cell are bonded by corrosion-resistant materials, so that the artificial ledge has the structure of an actual ledge and is a whole.
This device still includes controller 2 and the positive pole electric current detection device 3, flue gas flow regulation and control module 4, cooling system 14 and the temperature sensor 16 of being connected with controller 2, the sense terminal of positive pole electric current detection device 3 is connected with the positive pole of double-deck airtight aluminium cell 1, temperature sensor 16 sets up in double-deck airtight aluminium cell 1, flue gas flow regulation and control module 4's control end and exhaust flow control valve, inlet flow governing valve 17 and fan electricity are connected.
Through the controller 2, the control of the aluminum electric heating heat-clearing balance regulation and control device for new energy consumption can be realized, and the specific control method is as follows:
when the aluminum electrolytic cell consumes unstable new energy, the detection end of the anode current detection device 3 monitors the working current of the aluminum electrolytic cell in real time, and transmits the fluctuation signal of the detected current to the controller 2, the controller 2 transmits the current signal to the flue gas flow regulation and control module 4, and the flue gas flow regulation and control module 4 controls the exhaust flow control valve, the intake flow regulating valve 17 and the fan to act according to the fluctuation of the current.
The amount of air flow in the third heat-retaining cover 13 is adjusted by the exhaust gas flow control valve and the intake flow regulating valve 17 until the temperature change signal detected by the temperature sensor 16 is within the normal range. The temperature sensor 16 controls the on-off of the external heat dissipation system 14 at the same time, controls the heat balance in the electrolytic cell through the combined action of the heat dissipation system 14 and the flue gas flow regulation module 4, and can realize the flexible operation of the electrolytic cell under the condition of current fluctuation.
The specific adjustment mode of the flue gas flow regulation and control module is as follows:
in the formula V Regulating flow The gas flow rate needs to be adjusted; v Reference flow rate Is the gas flow at the reference temperature; t is Detection of The detected current magnitude for the new energy consumption; t is Reference(s) The current magnitude under the reference current; eta is constant and is determined according to the type of new energy consumption, the type of the electrolytic cell and the production condition.
When the aluminum electrolytic cell consumes new energy and the current fluctuates above the normal range, the temperature of the aluminum electrolytic cell rises to reach the working temperature range of the first flat heat pipe 152 at 900-930 ℃ in the artificial side ledge 15, the first flat heat pipe 152 rapidly conducts the heat in the aluminum electrolytic cell to the side of the aluminum electrolytic cell through the phase change of the working medium, thereby realizing the rapid heat dissipation of the side of the aluminum electrolytic cell, more efficiently and safely realizing the ledge effect formed by the traditional aluminum electrolytic cell,
meanwhile, when the temperature sensor 16 detects that the temperature of the aluminum electrolytic cell rises, a signal is sent to the flue gas flow regulating and controlling module 4, the flue gas flow regulating and controlling module 4 controls the fan to work, so that hot gas in a high-temperature flue region, a low-temperature flue region and a heat exchange region is discharged respectively, meanwhile, the exhaust flow control valve and the air inlet flow regulating valve 17 are controlled to improve the opening degree of the valve, increase the flow, take away redundant heat, realize rapid temperature regulation, and ensure the efficiency,
when the temperature of the aluminum electrolytic cell is reduced, the temperature sensor 16 sends a signal to the flue gas flow regulating module 4, the flue gas flow regulating module 4 controls the exhaust flow control valve and the intake flow regulating valve 17 to reduce the opening degree of the valves, the control of the flow of the exhaust flue gas is realized, when the temperature of the side part of the aluminum electrolytic cell is reduced to the working temperature of the second flat heat pipe 153 of 400-500 ℃, the first flat heat pipe 152 does not work, the heat preservation effect is realized, the electrolytic cell is quickly returned to the heat balance state, and the second flat heat pipe 153 conducts redundant heat to the external heat dissipation system 14 of the aluminum electrolytic cell.
Application example:
in the process of consuming wind power by a certain 420kA electrolytic cell, the power fluctuation reaches +/-20%. The third heat-insulating cover of the electrolytic cell is made of temperature-resistant foaming resin and is 200cm away from the second heat-insulating cover; artificial side ledge, mainly composed of three parts: the heat pipe comprises an anti-corrosion layer composed of corundum and cryolite, and a first flat plate heat pipe and a second flat plate heat pipe with opposite cold ends (the working medium of the first flat plate heat pipe is NaK alloy at 900-930 ℃, and the working medium of the second flat plate heat pipe is NaK alloy at 400-500 ℃). When the anode current detection device detects that the current fluctuation reaches + 15%, the thermal balance of the electrolytic cell is destroyed, the anode current detection device sends a fluctuating current signal to the smoke flow regulation and control module, the smoke flow regulation and control module controls a fan and an exhaust flow control valve in a high-temperature smoke area, a low-temperature smoke area and a heat exchange area, and gas flow V under the reference temperature in the three areas is firstly set Reference flow rate Are respectively 5000m 3 /h、10000m 3 /h、12000m 3 H, the corresponding constant coefficient eta also takes different values, then the increased current signals are converted into flow signals needing to be adjusted through a calculation formula (1) respectively, the flow signals are sent to flow control valves in exhaust ports of corresponding areas, and the adjusted gas flow V of the high-temperature smoke area, the low-temperature smoke area and the heat exchange area is obtained through calculation Regulating the flow of Is 7000m 3 /h、12000m 3 /h、14000m 3 Finally, controlling a fan and an exhaust flow control valve in a corresponding area to increase the air flow in a heat exchange area by 40%, the smoke flow in a low-temperature smoke area by 20%, the smoke flow in a high-temperature smoke area by 16%, and the smoke in a high-temperature smoke area and a low-temperature smoke area to be quickly taken away; the air flow in the heat exchange area is increased, so that the heat exchange between the flue gas in the high-low temperature flue gas area of the double-layer closed aluminum electrolysis cell and the air in the outermost layer heat-insulating cover is accelerated, and the heat dissipation efficiency at the top of the cell is greatly increased; meanwhile, the smoke flow regulation and control module transmits signals to the air inlet flow regulating valve and the artificial side ledge, controls the air inlet flow regulating valve to rotate the valve core, regulates the valve body and the valve core to increase the opening area by 30 percent, and is used for controlling the air flow in the cover by matching with the air flow control valve on the air exhaust portThe heat exchange efficiency is high, the heat dissipation rate is high until the temperature signal fed back to the flue gas flow regulation and control module by the temperature sensor 16 is within the normal range,
the temperature rises, and artificial lateral part bank of cells can be automatic conduct the hot junction heat to the cold junction fast in operating temperature range, and the gas transmission pipeline near the cold junction is assisted with circulation of air and is in time taken away the heat this moment, realizes the quick heat dissipation of lateral part. In conclusion, the device can quickly return to the heat balance state when the electrolytic cell consumes unstable new energy through the synergistic action of the flue gas flow regulation and control in the high-temperature smoke area and the low-temperature smoke area, the air inlet flow regulating valve and the artificial side ledge.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides an aluminium electricity fever heat balance regulation and control device towards new forms of energy consumption which characterized in that: including double-deck airtight aluminium cell (1), double-deck airtight aluminium cell (1) comprises aluminium cell and first heat preservation cover (11) and the second heat preservation cover (12) that lay in proper order from inside to outside that sets up at the aluminium cell top, first heat preservation cover (11) are sealed with aluminium cell open-top, the top of double-deck airtight aluminium cell (1), still be equipped with third heat preservation cover (13) in second heat preservation cover (12) outside, be equipped with sealed space between first heat preservation cover (11) and the aluminium cell and form the high temperature cigarette district, it forms the low temperature cigarette district to be equipped with sealed space between first heat preservation cover (11) and second heat preservation cover (12), it forms the heat exchange district to be equipped with sealed space between second heat preservation cover (12) and third heat preservation cover (13), be equipped with first gas vent (111) respectively on first heat preservation cover (11), second heat preservation cover (12) and third heat preservation cover (13), Second gas vent (121) and third gas vent (131), install independent fan on first gas vent (111), second gas vent (121) and third gas vent (131) respectively, the air outlet of fan communicates with the external world through independent exhaust pipe way on first gas vent (111), second gas vent (121) and third gas vent (131), every all install the air discharge flow control valve in the exhaust pipe way, install on third heat preservation cover (13), on the one side relative with third gas vent (131) intake flow control valve (17) that are used for controlling the air input.
2. The new energy consumption-oriented aluminum electric heating heat balance regulation and control device as claimed in claim 1, characterized in that: the air inlet flow regulating valve (17) comprises a valve body and a valve core, an air inlet is formed in the third heat-insulating cover (13), the valve body comprises a baffle (171) fixed on the air inlet and a plurality of fan-shaped openings formed in the baffle (171), and the fan-shaped openings are symmetrically arranged on the baffle (171) by taking the central axis of the air inlet as a symmetry axis; the fan-shaped opening is provided with a fan-shaped ventilating plate (172), and the fan-shaped ventilating plate (172) is densely provided with ventilating holes; the valve core comprises a plurality of fan-shaped sealing plates (173) corresponding to the fan-shaped opening positions, the fan-shaped sealing plates (173) are fixed on a rotating shaft (174), the rotating shaft (174) is installed on a baffle (171) through a bearing, the rotating shaft (174) and a central shaft of the air inlet are coaxially arranged, the rotating shaft (174) is driven to rotate through a motor, and when the gas flow control valve is in a closed state, the fan-shaped sealing plates (173) are just arranged on the fan-shaped openings to seal the fan-shaped openings.
3. The aluminum electrothermal heat balance regulation device for new energy consumption of claim 1 or 2, wherein: the side wall of the double-layer sealed aluminum electrolytic cell (1) is further provided with an artificial side ledge (15), the artificial side ledge (15) is sequentially provided with a corrosion-resistant layer (151), a first flat heat pipe (152) and a second flat heat pipe (153) from the inner side of an aluminum electrolytic cell cavity to the side wall direction of the aluminum electrolytic cell, the working temperature of working media in the first flat heat pipe (152) is 900-930 ℃, the working temperature of working media in the second flat heat pipe (153) is 400-500 ℃, the outer side wall of the double-layer sealed aluminum electrolytic cell (1) is further provided with a heat dissipation system (14), and the heat dissipation system (14) is respectively communicated with the first flat heat pipe (152) and the second flat heat pipe (153) through pipelines.
4. The new energy consumption oriented aluminum electric heating balance regulation and control device as claimed in claim 3, characterized in that: the thickness of the artificial side ledge (15) is 140mm, the thickness of the first flat plate heat pipe (153) and the thickness of the second flat plate heat pipe (153) are both 50mm, and the thickness of the corrosion-resistant layer (151) is 40 mm.
5. The new energy consumption-oriented aluminum electric heating heat balance regulation and control device as claimed in claim 3, characterized in that: the shapes of the first and second flat heat pipes (153) are matched with the shape of the internal ledge of the aluminum electrolytic cell, and gaps between the first flat heat pipe (152) and the second flat heat pipe (153) and between the second flat heat pipe (153) and the side wall of the aluminum electrolytic cell are bonded through corrosion-resistant materials, so that the artificial ledge forms a whole.
6. The new energy consumption oriented aluminum electric heating balance regulation and control device as claimed in claim 3, characterized in that: the device is characterized by further comprising a controller (2), an anode current detection device (3) connected with the controller (2), a flue gas flow regulation and control module (4), a heat dissipation system (14) and a temperature sensor (16), wherein the detection end of the anode current detection device (3) is connected with the anode of the double-layer sealed aluminum electrolytic cell (1), the temperature sensor (16) is arranged in the double-layer sealed aluminum electrolytic cell (1), and the control end of the flue gas flow regulation and control module (4) is electrically connected with an exhaust flow control valve, an inlet flow regulating valve (17) and a fan.
7. An aluminum electric heating balance regulation and control method for new energy consumption, which utilizes the aluminum electric heating balance regulation and control device for new energy consumption of claim 6, and is characterized in that: the specific control method comprises the following steps: when the aluminum electrolytic cell consumes unstable new energy, the detection end of the anode current detection device (3) monitors the working current of the aluminum electrolytic cell in real time, and transmits the fluctuation signal of the detected current to the flue gas flow regulation and control module (4) through the controller (2), the flue gas flow regulation and control module (4) converts the fluctuation of the current into gas flow, and the gas flow is regulated by controlling the exhaust flow control valve, the inlet flow regulating valve (17) and the fan.
8. The new energy consumption-oriented aluminum electric heating balance regulation and control method as claimed in claim 7, characterized in that: the method for converting the fluctuation of the current into the gas flow is as follows:
in the formula V Regulating flow The gas flow rate needs to be adjusted; v Reference flow rate Is the gas flow at the reference temperature; t is a unit of Detection of The detected current magnitude for the new energy consumption; t is Datum The current magnitude under the reference current; eta is a constant.
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