CN201762461U - Preheating starting device of inert anode aluminum electrolysis cell - Google Patents
Preheating starting device of inert anode aluminum electrolysis cell Download PDFInfo
- Publication number
- CN201762461U CN201762461U CN201020234516XU CN201020234516U CN201762461U CN 201762461 U CN201762461 U CN 201762461U CN 201020234516X U CN201020234516X U CN 201020234516XU CN 201020234516 U CN201020234516 U CN 201020234516U CN 201762461 U CN201762461 U CN 201762461U
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- Prior art keywords
- heating
- heat insulating
- insulating board
- electrolysis cell
- equipment
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 title abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000005485 electric heating Methods 0.000 claims description 16
- 239000004411 aluminium Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000003792 electrolyte Substances 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical group B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a preheating starting device of an inert anode aluminum electrolysis cell which comprises a heating device, a master controller and a computer. The heating device heats an electrolysis cell and comprises a thermoscope; the master controller supplies power to the heating device through a connecting cable and is connected with the thermoscope through a signal line; the master controller controls power supply according to a measured temperature; and the computer is connected with the master controller to set a temperature raising procedure for the master controller. As the power of the preheating starting device is adjustable and each group of internal heating resistances can be independently dismounted, the preheating starting device not only can be used for preheating the electrolysis cell and melting electrolyte, but also can simulate the heat productivity of the electrolysis cell during normal running, build heat balance and an inner hearth model for the electrolysis cell in advance, and realize to replace anodes without disturbance and stably start the electrolysis cell.
Description
Technical field
The utility model relates to a kind of pipeline start up by preheating equipment of electrolyzer, especially relates to a kind of pipeline start up by preheating equipment of inert anode aluminium cell.
Background technology
The electrolyzer of employing noble electrode (containing inert anode or inert cathode) can not be as traditional electrolyzer roasting and starting under anodic participates in.Because its anode mostly is metal alloy electrodes or cermet electrodes, can not be in roasting electrolyzer process just energising use or without any under the sfgd. with the electrolyzer roasting.Traditional molten aluminum roasting, baking coke particles, combustion gas roasting etc. all need anode in roasting early stage or later stage energising, with further heat fused ionogen with set up energy balance, and after startup, need for some time quite long and unsettled " final-period management phase ".So these methods are all not too suitable concerning the inert anode electrolyzer, it needs a kind of equipment to assist preheating electrolytic bath, and does not need anode to participate in.
In addition, the inert anode disturbance rejection is poor, need move under the state stably at one, and electrolyte temperature all will be fit to the operational conditions of inert anode with becoming to grade, otherwise can have a strong impact on the work-ing life or the result of use of noble electrode.So, before the noble electrode energising, just seem extremely important for it provides an environment of having set up energy balance.
Under lab, small-sized inert anode electrolyzer can be built in the burner hearth of a process furnace, comes preheating electrolytic bath, molten electrolyte by process furnace, and it is incubated and sets up energy balance.Yet, come preheating electrolytic bath by this equipment of process furnace, also improper for the electrolyzer of large-scale inert anode electrolyzer or suitability for industrialized production.
Application number is that 200510031315.3 Chinese patent application discloses, inert anode is taken up with tank body, and tank body adopts graphite or carbon product, and the electrode after taking up is as carbon anode, can be in roasting and starting or use during change poles, to avoid the impact of heat, electricity and thermal etching gas.Energising back tank body can consume, and when exposing noble electrode, electrode carries out the transition to working order naturally.
Application number is that 01820302.7 Chinese patent application discloses, and several noble electrodes is combined, and added insulating heat insulating material, forms and the carbon anode similar shape.Every group of noble electrode combination can be replaced the carbon anode more than one or that has now in the groove.Show in its literary composition earlier with carbon anode roasting and starting electrolyzer, treat that electrolyzer is stable after, replace with the inert anode group again.
U.S. Pat 6,537,438 disclose, when the pipeline start up by preheating electrolyzer, with the outer stopping off of negative electrode.Innermost layer contact charcoal negative electrode is titanium diboride layer in the protective layer, and the middle layer is metallic aluminium or alloy, and outermost layer is a charcoal.Adopt the method for gas roast, anode is the sintering metal anode.The oxygenizement that the anodic protective layer derives from the roasting process makes its top layer oxidation.
Above patent is directly at the equipment of roasting and starting, but focuses on and take certain measure, makes it can continue to use traditional baking start-up method.Directly do not consider how setting up thermal equilibrium after the noble electrode energising in other words of success or not behind the pipeline start up by preheating and use conventional methods.Therefore, be applicable in, the pipeline start up by preheating equipment of large-scale noble electrode electrolyzer remains a blank.
The utility model content
In view of this, the purpose of this utility model provides a kind of pipeline start up by preheating equipment of inert anode aluminium cell, this equipment not only can heat and roaster hearth, can also help electrolyzer to set up energy balance and stove group in advance, promptly may operate in the stable environment after making electrifying electrodes.
Above-mentioned purpose realizes by following proposal:
A kind of pipeline start up by preheating equipment of inert anode aluminium cell is characterized in that, described equipment comprises:
Heating unit, it is the electrolyzer heating, and described heating unit comprises thermoscope;
The overhead control device, it is described heating unit power supply by tie cable, and is connected with described thermoscope by signal wire, described overhead control device is according to the temperature control power supply that records;
Computer, it is connected with described overhead control device, for described overhead control device is set heating schedule.
According to aforesaid device; it is characterized in that; described heating unit is made up of ac bus, a plurality of electric heating tube, bracing frame, heat insulating board, thermopair; the support frame as described above below vertically is plugged with described a plurality of electric heating tube; described heat insulating board is below described support; described electric heating tube passes described heat insulating board; described electric heating tube is connected with described ac bus point; described thermopair also vertically is plugged on the described support and passes described heat insulating board, and described electric heating tube has heating tube protective sleeve or supercoat outward.
According to aforesaid device; it is characterized in that; described heating unit is by ac bus; a plurality of flat electric heaters; bracing frame; heat insulating board; thermopair is formed; the support frame as described above below vertically is plugged with described a plurality of flat electric heater; described heat insulating board is below described support; described flat electric heater passes described heat insulating board; described flat electric heater is connected with described ac bus point; described thermopair also vertically is plugged on the described support and passes described heat insulating board, and described flat electric heater has plate heater protective sleeve or supercoat outward.
According to aforesaid device, it is characterized in that, be connected with suspension ring on the support frame as described above.
According to aforesaid device, the material of described protective sleeve or supercoat can be corundum, alumina porcelain, silicon carbide or boron nitride.
According to aforesaid device, described branch bus is connected by having being flexible coupling of switching function with described ac bus.
This equipment since its adjustable power and every group of internal heating resistance can dismantle separately, therefore not only can be used for preheating electrolytic bath, molten electrolyte, can also simulate the thermal value of electrolyzer when normally moving, for electrolyzer is set up type in thermal equilibrium and the burner hearth in advance, and the no disturbance anode of realization is replaced the smooth starting electrolyzer.
Description of drawings
Fig. 1 is the structural representation of the pipeline start up by preheating equipment of inert anode aluminium cell of the present utility model;
Fig. 2 is a kind of structural representation of heating resistor;
Fig. 3 is the structural representation of another kind of heating resistor.
Embodiment
Below in conjunction with drawings and Examples, describe the utility model in detail:
As Fig. 1, the schematic construction of a cover inert anode aluminium cell pipeline start up by preheating equipment has been described.Mainly comprise heating unit 1, overhead control device 7 and computer 8.Heating unit 1 is the electrolyzer heating, and heating unit 1 comprises thermoscope (referring to Fig. 2).Overhead control device 7 is heating unit 1 power supply by tie cable 5, and is connected with thermoscope by signal wire 6, and overhead control device 7 is according to the temperature control power supply that records.Computer 8 is connected with overhead control device 7, for the overhead control device is set heating schedule.
Referring to Fig. 2, shown in the figure for a kind of embodiment of the heating resistor that heating unit comprised.
Heating unit is by 2 one-tenth of one or more groups heating resistor groups, and the structure of every group of heating resistor 2 as shown in Figure 2.Every group of heating resistor comprises branch bus 11, a plurality of electric heating tube 12, bracing frame 10, heat insulating board 14, thermopair 15, branch bus 11 is electrically connected with ac bus 4 (referring to Fig. 1), for example be flexible coupling 3 by what have a switching function, thereby the on off state of every group of heating resistor can independent control, referring to Fig. 1.And every group of heating resistor can be dismantled separately, power is adjustable continuously, thereby can be implemented in when replacing electrode, the working order that does not influence other heating resistor and replaced electrode, can not cause ionogen significantly to lower the temperature and the distributing of thermal etching gas or volatile matter, accomplish not have disturbance and replace the smooth starting electrolyzer.Bracing frame 10 belows vertically are plugged with a plurality of electric heating tubes 12.Heat insulating board 14 is below support 11, and it can play the effect of heat-insulation and heat-preservation, and remaining slit can seal burner hearth with other heat-stable material.Electric heating tube 12 passes heat insulating board 14; electric heating tube 12 is electrically connected with branch bus 11; thermopair 15 also vertically is plugged on the support 10 and passes heat insulating board 14; can arrange the quantity of thermopair as required; outside the electric heating tube 12 heating tube protective sleeve or supercoat 13 are arranged, play the effect of isolating electrolyte corrosion.The material of this protective sleeve or supercoat 13 can be corundum, alumina porcelain, silicon carbide or boron nitride.
Heating resistor is the main heating unit of this complete equipment, and how many its group numbers can increasing or reducing according to size, structure and the electrode of electrolyzer.
Referring to another embodiment of Fig. 3, be to use flat electric heater 12 ' to replace electric heating tube 12 with the foregoing description difference.
When using equipment pipeline start up by preheating electrolyzer of the present utility model, heating unit 1 is packed in the electrolyzer burner hearth.The group number of the heating resistor 2 that heating unit 1 is included is roughly corresponding with electrode pair quantity (anode and a negative electrode are a pair of), when cell construction is special, as is provided with Aluminum storage pond etc., can suitably increase the quantity of heating resistor 2.In dress internal heating resistance,, pour into liquid electrolyte again with solid electrolyte filling burner hearth or after treating preheating baking burner hearth.
The rated output of heating resistor 2 calculates acquisition according to the design voltage and the design current intensity of electrolyzer, and it is more high-power to consider that roasting process needs, and can suitably amplify.Calculation formula is as follows:
Wherein, W
ResistanceRated output for single internal heating resistance; V
If, I
IfBe design of electrolysis cells voltage and design current; K is scale-up factor (1 ~ 2); N is the number of heating resistor 2.
Connect the signal wire of lead and temperature thermocouple.After shove charge is finished, in man-machine interface or computer, configure heating schedule, automatically heat temperature raising.After treating electrolyte melting and reaching target temperature, change heating power automatically, the heating power when its simulation electrolyzer is normally moved.Treat that electrolyzer reaches after the thermal equilibrium, dismantle internal heating resistance one by one, replace with combination of electrodes, and progressively load direct current.After treating that whole electrodes have been replaced, then rated current all loads, and starts electrolyzer.Can show working order or the each point Temperature numerical of respectively organizing heating resistor on computers; Control mode has temperature program(me) and follows the tracks of or the power program following function.
This complete equipment can be simulated the thermal value of electrolyzer in normal operation after finishing preheating burner hearth and molten electrolyte; Can realize the electrolyte ingredient adjustment, set up energy balance and set up type in the good burner hearth by this function.
Claims (6)
1. the pipeline start up by preheating equipment of an inert anode aluminium cell is characterized in that, described equipment comprises:
Heating unit, it is the electrolyzer heating, and described heating unit comprises thermoscope;
The overhead control device, it is described heating unit power supply by tie cable, and is connected with described thermoscope by signal wire, described overhead control device is according to the temperature control power supply that records;
Computer, it is connected with described overhead control device, for described overhead control device is set heating schedule.
2. equipment according to claim 1; it is characterized in that; described heating unit is made up of one or more groups heating resistor; every group of described heating resistor is by branch bus; a plurality of electric heating tubes; bracing frame; heat insulating board; thermopair is formed; described branch bus is electrically connected with ac bus; the support frame as described above below vertically is plugged with described a plurality of electric heating tube; described heat insulating board is below described support; described electric heating tube passes described heat insulating board; described electric heating tube is electrically connected with described branch bus; described thermopair also vertically is plugged on the described support and passes described heat insulating board, and described electric heating tube has heating tube protective sleeve or supercoat outward.
3. equipment according to claim 1; it is characterized in that; described heating unit is made up of one or more groups heating resistor; every group of described heating resistor is by branch bus; a plurality of flat electric heaters; bracing frame; heat insulating board; thermopair is formed; described branch bus is electrically connected with ac bus; the support frame as described above below vertically is plugged with described a plurality of flat electric heater; described heat insulating board is below described support; described flat electric heater passes described heat insulating board; described flat electric heater is electrically connected with described branch bus; described thermopair also vertically is plugged on the described support and passes described heat insulating board, and described flat electric heater is with plate heater protective sleeve or supercoat outward.
4. according to the described equipment of one of claim 1-3, it is characterized in that, be connected with suspension ring on the support frame as described above.
5. according to the described equipment of one of claim 1-3, the material of described protective sleeve or supercoat is corundum, alumina porcelain, silicon carbide or boron nitride.
6. according to the described equipment in one of claim 2 or 3, described branch bus is connected by having being flexible coupling of switching function with described ac bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020234516XU CN201762461U (en) | 2010-06-13 | 2010-06-13 | Preheating starting device of inert anode aluminum electrolysis cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020234516XU CN201762461U (en) | 2010-06-13 | 2010-06-13 | Preheating starting device of inert anode aluminum electrolysis cell |
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| Publication Number | Publication Date |
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| CN201762461U true CN201762461U (en) | 2011-03-16 |
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| CN201020234516XU Expired - Lifetime CN201762461U (en) | 2010-06-13 | 2010-06-13 | Preheating starting device of inert anode aluminum electrolysis cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013016929A1 (en) * | 2011-08-04 | 2013-02-07 | 中国铝业股份有限公司 | Preheating start method of aluminum electrolysis cell |
| WO2014015638A1 (en) * | 2012-07-27 | 2014-01-30 | 中国铝业股份有限公司 | Direct-current shunt preheating start method for inert electrode aluminum electrolysis cell |
| CN107881533A (en) * | 2017-12-28 | 2018-04-06 | 国联汽车动力电池研究院有限责任公司 | A kind of fused-salt bath with hot function in fused salt and the method for solid-oxide reduction |
-
2010
- 2010-06-13 CN CN201020234516XU patent/CN201762461U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013016929A1 (en) * | 2011-08-04 | 2013-02-07 | 中国铝业股份有限公司 | Preheating start method of aluminum electrolysis cell |
| WO2014015638A1 (en) * | 2012-07-27 | 2014-01-30 | 中国铝业股份有限公司 | Direct-current shunt preheating start method for inert electrode aluminum electrolysis cell |
| AU2012386298B2 (en) * | 2012-07-27 | 2015-10-08 | Aluminum Corporation Of China Limited | Direct-current shunt preheating start method for inert electrode aluminum electrolysis cell |
| US9528193B2 (en) | 2012-07-27 | 2016-12-27 | Aluminum Corporation Of China Limited | Direct-current shunt preheating start method for an inert electrode aluminum electrolysis cell |
| CN107881533A (en) * | 2017-12-28 | 2018-04-06 | 国联汽车动力电池研究院有限责任公司 | A kind of fused-salt bath with hot function in fused salt and the method for solid-oxide reduction |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
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| CX01 | Expiry of patent term |