CN107419300B - A kind of intelligence control system and control method of chlorination calcium molten salt electrolysis production calcium metal - Google Patents
A kind of intelligence control system and control method of chlorination calcium molten salt electrolysis production calcium metal Download PDFInfo
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- CN107419300B CN107419300B CN201710683742.2A CN201710683742A CN107419300B CN 107419300 B CN107419300 B CN 107419300B CN 201710683742 A CN201710683742 A CN 201710683742A CN 107419300 B CN107419300 B CN 107419300B
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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
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
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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
- C25C3/02—Electrolytic production, recovery or refining of metals by electrolysis of melts of alkali or alkaline earth metals
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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
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts
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Abstract
The present invention provides the intelligence control systems and control method of a kind of chlorination calcium molten salt electrolysis production calcium metal, the system includes: calcium electrolytic cell information acquisition unit, data processing and display unit, decision and control unit, control execution unit and back-end data administrative unit, pass through the bath voltage and electric current and electrolyte temperature data of automatic collection, according to the different control instruction of corresponding control rules, and corresponding control is executed according to control instruction and is operated.The present invention program revolutionizes the mode that calcium electrolysis production process relies on manual control and management, the automation and digitlization of the process control of calcium electrolysis production and management are realized, provides technical support for the enlargement of calcium electrolysis production, serialization and low energy consumption management.
Description
Technical field
The present invention relates to electrolysis production calcium metal technical fields more particularly to a kind of chlorination calcium molten salt electrolysis to produce calcium metal
Intelligence control system and control method.
Background technique
The industrialized production of high pure metal calcium mainly uses the fused salt electrolysis process of calcium chloride, the electricity that this method is used according to it
It is extremely different, and it is divided into Contact cathod method and liquid cathode method.Contact cathod method produces to obtain the copper calcium alloy rich in calcium, using
Evaporation obtains calcium metal, and Contact cathod rule directly passes through electrolysis and obtains calcium metal, belongs to calcium production most straightforward approach.Liquid
The electrolysis of body cathode method makees cathode with the copper calcium alloy liquid of calcic 10%~15%, and graphite electrode makees anode, and electrolytic chlorination calcium is molten
System takes the process of the calcium copper alloy rich in calcium.The calcium copper alloy of output obtains calcium metal through distillation.
For above two method, the discontinuous production model that existing production model keeps a furnace primary, wherein including heat
Process and cold process, because the two is different to the control of manufacturing parameter, and each process has its unique technique requirement, institute
With the production control flow for being electrolysed calcium is sufficiently complex, and the difficulty that parameter obtains in addition is big, such as currently without the work of economy and durability
Industry grade thermocouple (for acquiring electrolyte temperature), therefore during existing electrolysis production calcium metal, still by artificial
Naked eyes estimation electrolyte temperature, and the adding raw materials by the way of hand stock.
However, electrolyte temperature and calcium chloride concentration are all particularly significant for the electrolysis production process of calcium metal
Parameter.Firstly, calcium metal can float if electrolyte temperature is excessively high, a part burning, another part is dissolved in
CaCl2Middle generation CaCl, causes current efficiency to decline, and electrolyte is made to become sticky, and conductivity reduces, and occurs just must when such case
Electrolyte, which must be replaced, can also cause cathode calcium pump hot-spot, the calcium pump meeting of overheat and air in addition, electrolyte temperature is excessively high
In nitrogen interaction generate CaCl2；And if electrolyte temperature is too low, calcium metal and electrolyte are cemented together as sea
Continuous shape metal drop is precipitated.Entire electrolysis production process, by series of factors such as pole span, current density, resistivity, INSULATION DESIGNs
Influence, and it is existing artificial eye observe electrolyte by way of come realize temperature and blanking control be it is extremely unreasonable,
There are shortcomings: (1) production on-site environment of artificial production method is very severe, and worker must face the fused salt of high temperature directly, right
The damage of the person is larger；(2) artificial production method is very extensive, and often presence is failed to judge or error control logic occurs；(3) artificial
Production method needs the accumulation of worker's experience, and production efficiency is low, and worker can only once handle the blanking of an electrolytic cell, difficult
To ensure large-scale continuous production.It is limited by above-mentioned reason, electrolysis of calcium metal production model is still original at present, low efficiency
Under.
Summary of the invention
In view of the above problems, the invention proposes a kind of intelligent controls of chlorination calcium molten salt electrolysis production calcium metal
System and intelligent control method, be able to achieve to existing chlorination calcium molten salt electrolysis prepare calcium metal production process digitlization and from
Dynamicization, enlargement, serialization and low energy consumption production management for calcium electrolysis provide support.
The present invention provides a kind of intelligence control systems of chlorination calcium molten salt electrolysis production calcium metal, comprising:
Calcium electrolytic cell information acquisition unit, for obtaining bath voltage and electric current and electrolyte real time temperature original number
According to；
Data processing and display unit, for the bath voltage and electric current and electrolyte real time temperature to acquisition
Initial data is pre-processed, and obtains pretreated bath voltage and electric current and electrolyte real time temperature data, and show
Show the data information in system；
Decision and control unit, for warm in real time according to the pretreated bath voltage and electric current and electrolyte
Degree controls the electrolytic process of calcium metal according to control instruction is generated；
Control execution unit generates control instruction for receiving the decision and control unit, and executes corresponding control
Operation；
Back-end data administrative unit, for storing initial data, the data of the calcium electrolytic cell information acquisition unit acquisition
The control instruction that processing is generated with display unit treated data and decision and control unit.
In intelligence control system provided by the invention, calcium electrolytic cell information acquisition unit is the same as data processing and display unit
It is connected, data processing is connected with decision with control unit and back-end data administrative unit with display unit, and control executes list
Member, data processing are connected with decision with control unit with display unit and back-end data administrative unit, between each unit
Communication connection is established by transmission control protocol/Internet Protocol (TCP/IP).Because of intelligence control provided by the invention
Each unit of system processed use modularized design, the function opposite independent of each unit, so, after each unit organic linking
The production control to electrolytic cell can be realized.
Further, the calcium electrolytic cell information acquisition unit includes electrolyte temperature infrared measurement of temperature module and electrolyzer electric
Signal sampling module；
Wherein, the electrolyte temperature infrared measurement of temperature module is used for the temperature of real-time measurement electrolytic cell Inner electrolysis matter；
The electrolyzer electric signal sampling module for acquiring voltage and current data in electrolytic cell in real time.
Because being used for electrolytic cell Inner electrolysis matter temperature without the technical grade thermocouple of suitable economy and durability in the prior art
Measurement, so the present inventor, by many experiments, trial obtains electrolyte temperature by different methods, finally
It was found that most reliable result can be obtained by acquiring electrolyte temperature using infrared measurement of temperature equipment；And voltage and current in electrolytic cell
Data can be acquired using conventional voltage and current sample device in the prior art.
Further, the data processing and display unit include data preprocessing module and digitlization display module；
Wherein, the data preprocessing module is used for the collected initial data of calcium electrolytic cell information acquisition unit
It is filtered denoising and/or abnormal data elimination processing；
The digitlization display module is for the data information in display system.
Further, the decision and control unit include blanking control module, temperature control modules, go out calcium control module
And exception processing module；
Wherein, the blanking control module is used for according to the data preprocessing module treated bath voltage and electricity
Flow data and blanking rate control rule, generate the instruction of blanking rate control；
The temperature control modules are used for real-time according to electrolyte in the data preprocessing module treated electrolytic cell
Temperature data and temperature control rule, generate temperature control instruction；
It is described go out calcium control module be used for according to the data preprocessing module treated bath voltage and electric current number
Rule is controlled according to calcium amount out, generates calcium control instruction；
The exception processing module for identification the data preprocessing module treated bath voltage and electric current with
And the abnormal data in electrolyte real time temperature data, and abnormality processing control instruction is generated according to abnormality processing rule.
Research by testing repeatedly and to empirical equation in the prior art, inventor study to have obtained blanking rate
Control rule, goes out calcium amount control rule and abnormality processing rule at temperature control rule:
Blanking rate control rule are as follows: according to collected bath voltage U and electric current I, pass through formulaMeter
The resistance R of electrolytic cell is calculated, wherein EaIndicate the back electromotive-force constant in electrolytic process, according to the actual situation, the general value of the constant
Range is 1.2V~1.5V；When the climbing speed of electrolytic cell resistance R when 24 is small it is interior be higher than 50p Ω/s when, generate calcium chloride
Blanking interval shorten 10s instruction；It is located within 10~50p Ω/s when the climbing speed of electrolytic cell resistance R is interior when 24 is small
When, generate the instruction that the blanking interval of calcium chloride is shortened to 2~5s；When electrolytic cell resistance R fluctuation rate (i.e. climbing speed or
Fall off rate) in 24 hours within 10p Ω/s when, keep current blanking rate；When the fall off rate of electrolytic cell resistance R
When being located within 10~50p Ω/s in 24 hours, the instruction that the blanking interval of calcium chloride is increased to 2~5s is generated；Work as electrolysis
When the fall off rate of cell resistance R is located at 50p Ω/s or more in 24 hours, generates and the blanking interval of calcium chloride is increased 10s's
Instruction.
Temperature control rule are as follows: electrolyte temperature is defined as three class: being " low " when temperature is 500~649 DEG C
Shelves are " normal " shelves when temperature is 650~715 DEG C, are "high" shelves when temperature is 716~800 DEG C；When collected electrolysis
When matter temperature is " low " shelves, the instruction that electrode pole span is increased to 0.5CM is generated；When collected electrolyte temperature is " normal " shelves
When, keep current electrode pole span constant；When collected electrolyte temperature is "high" shelves, then generates and reduce electrode pole span
The instruction of 0.5CM；Specific electrode pole span adjustment, controls motor by electrode and realizes.
Calcium amount control rule out are as follows: according to the voltage U and electric current I in electrolytic process, calculate accumulative in 24-72 hours
The calcium yield of theory electrolysis, (generally 24 hours) export out calcium amount information at regular intervals, and generate calcium operation
Instruction.The calculation formula of the theoretical quantum of output P of calcium are as follows: P=Kca* I* η * t, wherein KcaFor the electrochemical equivalent constant of calcium, take
Value is 0.7478*10-3kg/(A.h)；I is current strength, unit A；η is the current efficiency of electrolytic process, unit %；T is
Time interval, generally for 24 hours.
Abnormality processing rule are as follows: when electrolyte temperature is higher than 800 DEG C or is lower than 500 DEG C, it is abnormal to generate electrolytic cell
The instruction of prompt determines it is manual intervention or interruption electrolytic process by operator；When electrolytic cell occur electric current increase suddenly or
Reduced size of current exports warning message when within 30%, and generates and the progress of electrode pole span is decreased or increased automatically promptly
Automatically the instruction intervened；When the size of current that electric current increases or reduces suddenly, which occurs, in electrolytic cell exceeds 30%, then generate automatic
The instruction of tripping power-off.I.e. electric current increases, and reduces pole span；Electric current reduces, and increases pole span, and purpose is to maintain the heat of electrolytic cell flat
Weighing apparatus, for example, electric current increases, if pole span is constant, then electrode resistance is constant, then hot income I2* R then can significantly increase, so
Pole span must be reduced, R is reduced, maintains heat income；Conversely,.
Further, the control execution unit includes hopper execution module, pole span adjustment module, goes out calcium module, is urgent
Trip module；
Wherein, the hopper execution module is used to be instructed according to the blanking rate control that the decision and control unit generate
Blanking rate is adjusted, blanking operation is executed；
The pole span adjustment module is used to adjust electrode according to the temperature control instruction that the decision and control unit generate
Pole span executes temperature control operation；
The calcium module out is used to go out calcium control instruction according to what the decision and control unit generated, executes out calcium and grasps
Make；
Emergency trip module is used for the abnormality processing control instruction generated according to the decision and control unit, executes exception
Processing operation, wherein abnormality processing operation includes prompt manual intervention, adjusts electrode pole span and/or tripping power-off.
Further, the electrolyte temperature infrared measurement of temperature module includes at least infrared temperature probe and quartz cooling and protects
Shield.
Because environment temperature where electrolytic cell is high, when common infrared temperature probe can not be long under such hot environment
Between work normally, for inventor by being tested repeatedly to a variety of materials and comparative study, discovery quartz material can be effective
Stop to allow infrared ray almost to pass through without loss while high temperature, so, inventor is according to this characteristic of quartz material, production
For protecting quartzy cooling and the protective cover of infrared temperature probe, this system is enabled successfully to acquire electrolyte for a long time
Temperature information.
The present invention also provides a kind of intelligent control methods of chlorination calcium molten salt electrolysis production calcium metal, comprising:
Step S1: bath voltage and electric current and electrolyte real time temperature initial data are obtained；
Step S2: bath voltage and electric current and electrolyte real time temperature initial data to acquisition pre-process,
Obtain pretreated bath voltage and electric current and electrolyte real time temperature data, wherein pretreatment includes to the original
Beginning data are filtered denoising and/or abnormal data elimination processing；
Step S3: control is generated according to the pretreated bath voltage and electric current and electrolyte real time temperature data
System instruction, controls for the electrolytic process to calcium metal；
Step S4: according to the control instruction, corresponding control operation is executed.
Further, the step S1 is specifically included:
Step S1.1: bath voltage and electric current initial data are obtained using electrical signal collection equipment；
Step S1.2: electrolyte real time temperature initial data in electrolytic cell is obtained using infrared thermometry equipment.
Further, the step S3 is specifically included:
Step S3.1: raw according to the pretreated bath voltage and current data and blanking rate control rule
It is instructed at blanking rate control；
Step S3.2: controlling rule according to electrolyte real time temperature data in the pretreated electrolytic cell and temperature,
Generate temperature control instruction；
Step S3.3: rule, generation are controlled according to the pretreated bath voltage and current data and out calcium amount
Calcium control instruction out；
Step S3.4: in the identification pretreated bath voltage and electric current and electrolyte real time temperature data
Abnormal data, and abnormality processing control instruction is generated according to abnormality processing rule.
Specific every control rule is as follows:
Blanking rate control rule are as follows: according to collected bath voltage U and electric current I, pass through formulaMeter
The resistance R of electrolytic cell is calculated, wherein EaIndicate the back electromotive-force constant in electrolytic process, according to the actual situation, the general value of the constant
Range is 1.2V~1.5V；When the climbing speed of electrolytic cell resistance R when 24 is small it is interior be higher than 50p Ω/s when, generate calcium chloride
Blanking interval shorten 10s instruction；It is located within 10~50p Ω/s when the climbing speed of electrolytic cell resistance R is interior when 24 is small
When, generate the instruction that the blanking interval of calcium chloride is shortened to 2~5s；When electrolytic cell resistance R fluctuation rate (i.e. climbing speed or
Fall off rate) in 24 hours within 10p Ω/s when, keep current blanking rate；When the fall off rate of electrolytic cell resistance R
When being located within 10~50p Ω/s in 24 hours, the instruction that the blanking interval of calcium chloride is increased to 2~5s is generated；Work as electrolysis
When the fall off rate of cell resistance R is located at 50p Ω/s or more in 24 hours, generates and the blanking interval of calcium chloride is increased 10s's
Instruction.
Temperature control rule are as follows: electrolyte temperature is defined as three class: being " low " when temperature is 500~649 DEG C
Shelves are " normal " shelves when temperature is 650~715 DEG C, are "high" shelves when temperature is 716~800 DEG C；When collected electrolysis
When matter temperature is " low " shelves, the instruction that electrode pole span is increased to 0.5CM is generated；When collected electrolyte temperature is " normal " shelves
When, keep current electrode pole span constant；When collected electrolyte temperature is "high" shelves, then generates and reduce electrode pole span
The instruction of 0.5CM；Specific electrode pole span adjustment, controls motor by electrode and realizes.
Calcium amount control rule out are as follows: according to the voltage U and electric current I in electrolytic process, calculate accumulative in 24-72 hours
The calcium yield of theory electrolysis, (generally 24 hours) export out calcium amount information at regular intervals, and generate calcium operation
Instruction.The theoretical quantum of output P calculation formula of calcium are as follows: P=Kca* I* η * t, wherein KcaFor the electrochemical equivalent constant of calcium, value
For 0.7478*10-3kg/(A.h)；I is current strength, unit A；η is the current efficiency of electrolytic process, unit %；When t is
Between be spaced, generally for 24 hours.
Abnormality processing rule are as follows: when electrolyte temperature is higher than 800 DEG C or is lower than 500 DEG C, it is abnormal to generate electrolytic cell
The instruction of prompt determines it is manual intervention or interruption electrolytic process by operator；When electrolytic cell occur electric current increase suddenly or
Reduced size of current exports warning message when within 30%, and generates and the progress of electrode pole span is decreased or increased automatically promptly
Automatically the instruction intervened；When the size of current that electric current increases or reduces suddenly, which occurs, in electrolytic cell exceeds 30%, then generate automatic
The instruction of tripping power-off.I.e. electric current increases, and reduces pole span；Electric current reduces, and increases pole span, and purpose is to maintain the heat of electrolytic cell flat
Weighing apparatus, for example, electric current increases, if pole span is constant, then electrode resistance is constant, then hot income I2* R then can significantly increase, so
Pole span must be reduced, R is reduced, maintains heat income；Conversely,.
Further, the step S4 is specifically included:
Step S4.1: instructing according to the blanking rate control, adjusts blanking rate, executes blanking operation；
Step S4.2: according to the temperature control instruction, electrode pole span is adjusted, executes temperature control operation；
Step S4.3: according to the calcium control instruction out, calcium operation is executed out；
Step S4.4: according to the abnormality processing control instruction, abnormality processing operation is executed, wherein abnormality processing operation
Including prompt manual intervention, adjust electrode pole span and/or tripping power-off.
Beneficial effect
The invention has the following advantages:
1. realizing the acquisition automation to key parameter every in electrolysis of calcium metal production process: the present invention program is led to
Crossing the infrared temperature probe with special quartzy cooling and protective cover realizes real-time acquisition to electrolyte temperature, and passes through electricity
Pressure realizes the real-time acquisition to bath voltage and electric current with current acquisition equipment, realizes obtaining automatically for every key parameter
It takes, provides the foundation for the automation of production process operational administrative；
2. realizing the automation to electrolysis of calcium metal production process operational administrative: scheme through the invention can solve
The operator at the scene of putting realizes the comprehensive digitlization in electrolysis of calcium metal production process to blanking, temperature and abnormal conditions
Control；
3. it is strong to realize set expandability: scheme provided by the invention can be controlled for separate unit calcium electrolytic cell,
It can be controlled for more calcium electrolytic cells, be communicated, made using the ICP/IP protocol of high reliability between each unit
The system of obtaining extension is very easy；
4. realizing the digitlization of production procedure: scheme provided by the invention by entire electrolysis of calcium metal slot self-starting to life
The data of life termination overall process are stored and are handled, and by electrolysis of calcium metal production process fully digitalization, form digitlization calcium
Electrolytic cell realizes the great leap of electrolysis of calcium metal production process information.
Detailed description of the invention
Fig. 1 shows a kind of structure of the intelligence control system of chlorination calcium molten salt electrolysis production calcium metal provided by the invention
Schematic diagram；
Fig. 2 shows a kind of processes of the intelligent control method of chlorination calcium molten salt electrolysis production calcium metal provided by the invention
Figure；
Fig. 3 shows a kind of intelligent control system of chlorination calcium molten salt electrolysis production calcium metal of the offer of the embodiment of the present invention one
The structural schematic diagram of system；
Fig. 4 shows a kind of intelligent control system of chlorination calcium molten salt electrolysis production calcium metal of the offer of the embodiment of the present invention one
The concrete structure schematic diagram of electrolyte temperature infrared measurement of temperature module in system；
Fig. 5 shows the intelligent control of another chlorination calcium molten salt electrolysis production calcium metal provided by Embodiment 2 of the present invention
The structural schematic diagram of system.
Specific embodiment
In order to further explain scheme provided by the invention, the present invention is made combined with specific embodiments below further
Explanation.
Embodiment one
Fig. 1 shows a kind of structure of the intelligence control system of chlorination calcium molten salt electrolysis production calcium metal provided by the invention
Schematic diagram, this intelligence control system include calcium electrolytic cell information acquisition unit 10, data processing and display unit 20, decision and control
Unit 30, control execution unit 40 and back-end data administrative unit 50 processed.
Fig. 3 has been shown in particular in the present embodiment, the structure of the intelligence control system, calcium electrolytic cell information acquisition unit 10
It is specifically made of electrolyte temperature infrared measurement of temperature module 11 and electrolyzer electric signal sampling module 12, data processing and display unit
20 are specifically made of data preprocessing module 21 and digitlization display module 22, and decision and control unit 30 are by blanking control module
31, temperature control modules 32, out calcium control module 33 and exception processing module 34 are constituted, and control execution unit 40 is specifically by hopper
Execution module 41, goes out calcium module 43 and the composition of emergency trip module 44, calcium electrolytic cell information acquisition unit at pole span adjustment module 42
10 and control execution unit 40 be connected respectively with the associated components on electrolytic cell 70.In the present embodiment, it increases on a platform
Bit machine 60 can be used for planning as a whole the every terms of information in the intelligence control system, the machine 60 calculated above respectively with decision with
Control unit 30 is connected with back-end data administrative unit 50.It is established and is communicated to connect by TCP/IP between each unit.Wherein,
Electrolyzer electric signal sampling module 12 is crossed over to be realized using existing conventional voltage and current sampling device, decision and control unit
30 can be by programmable logic controller (PLC) (PLC) Lai Shixian.
The workflow of the system are as follows: pass through the electrolyte temperature infrared measurement of temperature mould in calcium electrolytic cell information acquisition unit 10
The temperature of 11 real-time measurement electrolytic cell Inner electrolysis matter of block, and by electrolyzer electric signal sampling module 12 in real time acquisition electrolytic cell
Voltage and current data；Data preprocessing module 21 in data processing and display unit 20 is by calcium electrolytic cell information acquisition unit
Collected initial data is filtered denoising and/or abnormal data elimination processing, to obtain valid data, and digitizes
Display module 22 is for all data information in display system；Blanking control module 31 in decision and control unit 30 can root
According to bath voltage and electric current valid data and blanking rate control rule, the instruction of blanking rate control is generated, temperature controls mould
Block 32 is used to control rule according to electrolyte real time temperature valid data in the electrolytic cell and temperature, generates temperature control and refers to
It enables, calcium control module 33 is used to be controlled according to the bath voltage and electric current valid data and out calcium amount regular out, generates
Calcium control instruction, exception processing module 34 bath voltage and electric current and electrolyte real time temperature significant figure for identification
Abnormal data in, and abnormality processing control instruction is generated according to abnormality processing rule；Hopper in control execution unit 40
Under the blanking rate control instruction that execution module 41 is generated according to the blanking control module 31 in decision and control unit 30 adjusts
Expect rate, execute blanking operation, pole span adjusts module 42 and generated according to the temperature control modules 32 in decision and control unit 30
Temperature control instruction adjust electrode pole span, execute temperature control operation, calcium module 43 is according in decision and control unit 30 out
Go out calcium control module 33 generate go out calcium control instruction, execute out calcium operation, emergency trip module 44 according to decision and control
The abnormality processing control instruction of the generation of exception processing module 34 in unit 30 executes abnormality processing operation, wherein exception
Reason operation includes prompt manual intervention, adjusts electrode pole span and/or tripping power-off；Back-end data administrative unit 50 can store calcium electricity
Solve initial data, data processing and display unit 20 treated valid data and the decision that slot information acquisition unit 10 acquires
The instructions generated with control unit 30, it is convenient that entire production process is recorded and safeguarded.
Wherein, the blanking rate control rule in blanking control module 31 are as follows: according to collected bath voltage U and electricity
I is flowed, formula is passed throughThe resistance R of electrolytic cell is calculated, wherein EaIndicate the back electromotive-force constant in electrolytic process, according to
Actual conditions, the general value range of the constant are 1.2V~1.5V；It is higher than when the climbing speed of electrolytic cell resistance R is interior when 24 is small
When 50p Ω/s, the instruction that the blanking interval of calcium chloride is shortened to 10s is generated；When the climbing speed of electrolytic cell resistance R is when 24 is small
When being inside located within 10~50p Ω/s, the instruction that the blanking interval of calcium chloride is shortened to 2~5s is generated；When electrolytic cell resistance R's
When fluctuation rate (i.e. climbing speed or fall off rate) is within 10p Ω/s in 24 hours, current blanking rate is kept；When
When the fall off rate of electrolytic cell resistance R is located within 10~50p Ω/s in 24 hours, generates and increase the blanking interval of calcium chloride
The instruction of big 2~5s；When the fall off rate of electrolytic cell resistance R when 24 is small it is interior be located at 50p Ω/s or more when, generate calcium chloride
Blanking interval increase 10s instruction.
Temperature in temperature control modules 32 controls rule are as follows: electrolyte temperature is defined as three class: when temperature is
It is " low " shelves at 500~649 DEG C, is " normal " shelves when temperature is 650~715 DEG C, is when temperature is 716~800 DEG C
"high" shelves；When collected electrolyte temperature is " low " shelves, the instruction that electrode pole span is increased to 0.5CM is generated；When collecting
Electrolyte temperature when being " normal " shelves, keep current electrode pole span constant；When collected electrolyte temperature is "high" shelves
When, then generate the instruction that electrode pole span is reduced to 0.5CM；Specific electrode pole span adjustment, controls motor by electrode and realizes.
Go out calcium control rule in calcium control module 33 out are as follows: according to the voltage U and electric current I in electrolytic process, calculate
The calcium yield of accumulative theoretical electrolysis in 24-72 hours, (generally 24 hours) export out calcium amount letter at regular intervals
Breath, and generate calcium operational order.The theoretical quantum of output P calculation formula of calcium are as follows: P=Kca* I* η * t, wherein KcaFor the electricity of calcium
Constant of chemical equilibrium, value 0.7478*10-3kg/(A.h)；I is current strength, unit A；η is that the electric current of electrolytic process is imitated
Rate, unit %；T is time interval, generally for 24 hours.
Abnormality processing rule in exception processing module 34 are as follows: when electrolyte temperature is higher than 800 DEG C or lower than 500 DEG C
It waits, generates the instruction of electrolytic cell abnormal prompt, determine it is manual intervention or interruption electrolytic process by operator；When electrolytic cell goes out
The size of current that existing electric current increases or reduces suddenly exports warning message when within 30%, and generates and be decreased or increased automatically
Electrode pole span carries out the instruction promptly intervened automatically；Exceed when the size of current that electric current increases or reduces suddenly occurs in electrolytic cell
When 30%, then the instruction of automatic trip power-off is generated.I.e. electric current increases, and reduces pole span；Electric current reduces, and increases pole span, and purpose is equal
For the thermal balance for maintaining electrolytic cell, for example, electric current increases, if pole span is constant, then electrode resistance is constant, then hot income I2* R is then
It can significantly increase, so pole span must be reduced, reduce R, maintain heat income；Conversely,.
As shown in figure 4, the electrolyte temperature infrared measurement of temperature module 11 suitable for calcium electrolysis production that this programme is proposed
Concrete structure schematic diagram, the electrolyte temperature infrared measurement of temperature module 11 included at least infrared temperature probe 111, quartz it is cooling with
Protective cover 112 and quartz plate 113.Because electrolytic cell local environment extreme temperatures, common infrared temperature probe can not be such
It is worked normally for a long time under hot environment, inventor by testing a variety of materials and comparative study repeatedly, discovery quartz
Material can allow infrared ray almost to pass through without loss while effectively stopping high temperature, so, inventor is according to quartz material
This characteristic has made the quartzy cooling for protecting infrared temperature probe 111 and protective cover 112, and in quartz cooling and has protected
The lens location of the corresponding infrared temperature probe 111 of shield 112 inlays quartz plate 113, is further ensured that the transmitance of infrared ray, makes
Obtain infrared temperature probe 111 successfully can accurately acquire the temperature information of electrolyte for a long time.
Fig. 2 shows a kind of processes of the intelligent control method of chlorination calcium molten salt electrolysis production calcium metal provided by the invention
Figure, this method comprises:
Step S1: bath voltage and electric current and electrolyte real time temperature initial data are obtained.
Specifically include: step S1.1: bath voltage and electric current initial data are obtained using electrical signal collection equipment；
Step S1.2: electrolyte real time temperature initial data in electrolytic cell is obtained using infrared thermometry equipment.
Step S2: bath voltage and electric current and electrolyte real time temperature initial data to acquisition pre-process,
Obtain pretreated bath voltage and electric current and electrolyte real time temperature data, wherein pretreatment includes to the original
Beginning data are filtered denoising and/or abnormal data elimination processing.
Step S3: control is generated according to the pretreated bath voltage and electric current and electrolyte real time temperature data
System instruction, controls for the electrolytic process to calcium metal.
It specifically include: step S3.1: according to the pretreated bath voltage and current data and blanking speed
Rate control rule, generates the instruction of blanking rate control；Step S3.2: real-time according to electrolyte in the pretreated electrolytic cell
Temperature data and temperature control rule, generate temperature control instruction；Step S3.3: according to the pretreated bath voltage
With current data and out calcium amount control rule, generates calcium control instruction；Step S3.4: the identification pretreated electrolytic cell
Abnormal data in voltage and current and electrolyte real time temperature data, and abnormality processing control is generated according to abnormality processing rule
System instruction.
Each control rule in step 3 is identical as the control rule in above-mentioned apparatus embodiment, and details are not described herein.
Step S4: according to the control instruction, corresponding control operation is executed.
Specifically include: step S4.1: being instructed according to the blanking rate control, adjust blanking rate, executes blanking
Operation；Step S4.2: according to the temperature control instruction, electrode pole span is adjusted, executes temperature control operation；Step S4.3: root
According to the calcium control instruction out, calcium operation is executed out；Step S4.4: according to the abnormality processing control instruction, exception is executed
Reason operation, wherein abnormality processing operation includes prompt manual intervention, adjusts electrode pole span and/or tripping power-off.
In conclusion the intelligence control system and control of a kind of chlorination calcium molten salt electrolysis production calcium metal provided by the invention
Method can liberate the operator at scene, realize in electrolysis of calcium metal production process to the complete of blanking, temperature and abnormal conditions
Orientation Digital Control realizes the low energy consumption high-efficiency manless production of calcium electrolytic process, and system provided by the invention and side
The data of the self-starting of electrolysis of calcium metal slot to life termination overall process are stored and are handled by method, and electrolysis of calcium metal was produced
Journey fully digitalization forms digitlization calcium electrolytic cell, realizes the great leap of electrolysis of calcium metal production process information.
Embodiment two
Fig. 5 shows the intelligent control of another chlorination calcium molten salt electrolysis production calcium metal provided by Embodiment 2 of the present invention
The structural schematic diagram of system includes in example 2 multiple electrolytic cells, and preferred scope is 5~15 electrolytic cells, each electricity
Solution slot is equipped with independent calcium electrolytic cell information acquisition unit 10, data processing and display unit 20 and control execution unit
40, the initial data of acquisition is sent to corresponding data processing to each calcium electrolytic cell information acquisition unit 10 and display is single
Member 20, all data processings and display unit 20 will be aggregated into the same decision by pretreated valid data and control is single
Member 30, the decision are respectively controlled with after decision judgement in the valid data to different electrolytic cells from control unit 30, will give birth to
At control instruction be sent respectively to the control execution unit 40 of each electrolytic cell, the control execution unit of each electrolytic cell 40
According to the corresponding operation of instruction execution.In the present embodiment, more host computers 60 can also be set, for decision and control
The working condition of unit 30 is observed or is controlled；Back-end data administrative unit 50 can only be connected with host computer 60,
For storing every initial data, valid data and/or the control instruction of the forwarding of host computer 60.
It is identical with description corresponding in embodiment one to other descriptions of each unit in embodiment two, it is no longer superfluous herein
It states.
In conclusion in a kind of intelligence control system for chlorination calcium molten salt electrolysis production calcium metal that embodiment two provides,
Because each electrolytic cell is respectively provided with independent calcium electrolytic cell information acquisition unit 10, data processing and display unit 20 and control
Execution unit 40, and data summarization is handled to the same decision and control unit 30, because each unit is fully functional
And it is relatively independent, therefore in the case where no host computer, all electrolytic cells remain to effectively work, so that it is guaranteed that calcium electrolytic cell
Normal production.
The above description is only an embodiment of the present invention, is not intended to limit the invention, all in spirit of that invention and original
It within then, changes, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of intelligence control system of chlorination calcium molten salt electrolysis production calcium metal characterized by comprising
Calcium electrolytic cell information acquisition unit, for obtaining bath voltage and electric current and electrolyte real time temperature initial data；
Data processing and display unit, for acquisition the bath voltage and electric current and electrolyte real time temperature it is original
Data are pre-processed, and obtain pretreated bath voltage and electric current and electrolyte real time temperature data, and show and be
Data information in system；
Decision and control unit, for according to the pretreated bath voltage and electric current and electrolyte real time temperature number
According to control instruction is generated, the electrolytic process of calcium metal is controlled；
Control execution unit generates control instruction for receiving the decision and control unit, and executes corresponding control operation；
Back-end data administrative unit, for storing initial data, the data processing of the calcium electrolytic cell information acquisition unit acquisition
The control instruction generated with display unit treated data and decision and control unit；
The decision and control unit include blanking control module, temperature control modules, go out calcium control module and abnormality processing mould
Block；
Wherein, the blanking control module is used for according to the data preprocessing module treated bath voltage and electric current number
According to, generation blanking rate control instruction regular with blanking rate control；
The temperature control modules are used for according to electrolyte real time temperature in the data preprocessing module treated electrolytic cell
Data and temperature control rule, generate temperature control instruction；
It is described go out calcium control module be used for according to the data preprocessing module treated bath voltage and current data and
Calcium amount control rule out, generates calcium control instruction；
The exception processing module data preprocessing module treated bath voltage and electric current and electricity for identification
The abnormal data in matter real time temperature data is solved, and abnormality processing control instruction is generated according to abnormality processing rule.
2. intelligence control system according to claim 1, which is characterized in that the calcium electrolytic cell information acquisition unit includes
Electrolyte temperature infrared measurement of temperature module and electrolyzer electric signal sampling module；
Wherein, the electrolyte temperature infrared measurement of temperature module is used for the temperature of real-time measurement electrolytic cell Inner electrolysis matter；
The electrolyzer electric signal sampling module for acquiring voltage and current data in electrolytic cell in real time.
3. intelligence control system according to claim 2, which is characterized in that the data processing and display unit include number
Data preprocess module and digitlization display module；
Wherein, the data preprocessing module is used to carry out the collected initial data of the calcium electrolytic cell information acquisition unit
Filtering and noise reduction sound and/or abnormal data elimination processing；
The digitlization display module is for the data information in display system.
4. intelligence control system according to claim 3, which is characterized in that the control execution unit includes that hopper executes
Module, goes out calcium module, emergency trip module at pole span adjustment module；
Wherein, the hopper execution module is used to be instructed according to the blanking rate control that the decision and control unit generate and adjust
Blanking rate executes blanking operation；
The pole span adjustment module is used to adjust electrode pole span according to the temperature control instruction that the decision and control unit generate,
Execute temperature control operation；
The calcium module out is used to go out calcium control instruction according to what the decision and control unit generated, executes out calcium and operates；
Emergency trip module is used for the abnormality processing control instruction generated according to the decision and control unit, executes abnormality processing
Operation, wherein abnormality processing operation includes prompt manual intervention, adjusts electrode pole span and/or tripping power-off.
5. intelligence control system according to claim 4, which is characterized in that the electrolyte temperature infrared measurement of temperature module is extremely
It less include infrared temperature probe and quartzy cooling and protective cover.
6. a kind of intelligent control method of chlorination calcium molten salt electrolysis production calcium metal characterized by comprising
Step S1: bath voltage and electric current and electrolyte real time temperature initial data are obtained；
Step S2: bath voltage and electric current and electrolyte real time temperature initial data to acquisition pre-process, and obtain
Pretreated bath voltage and electric current and electrolyte real time temperature data, wherein pretreatment includes to the original number
According to be filtered denoising and/or abnormal data elimination processing；
Step S3: control is generated according to the pretreated bath voltage and electric current and electrolyte real time temperature data and is referred to
It enables, is controlled for the electrolytic process to calcium metal；
Step S4: according to the control instruction, corresponding control operation is executed；
The step S3 is specifically included:
Step S3.1: according to the pretreated bath voltage and current data and blanking rate control rule, under generation
Expect rate control instruction；
Step S3.2: rule is controlled according to electrolyte real time temperature data in the pretreated electrolytic cell and temperature, is generated
Temperature control instruction；
Step S3.3: it is regular according to the pretreated bath voltage and current data and the out control of calcium amount, generate calcium
Control instruction；
Step S3.4: the exception in the identification pretreated bath voltage and electric current and electrolyte real time temperature data
Data, and abnormality processing control instruction is generated according to abnormality processing rule.
7. intelligent control method according to claim 6, which is characterized in that the step S1 is specifically included:
Step S1.1: bath voltage and electric current initial data are obtained using electrical signal collection equipment；
Step S1.2: electrolyte real time temperature initial data in electrolytic cell is obtained using infrared thermometry equipment.
8. intelligent control method according to claim 7, which is characterized in that the step S4 is specifically included:
Step S4.1: instructing according to the blanking rate control, adjusts blanking rate, executes blanking operation；
Step S4.2: according to the temperature control instruction, electrode pole span is adjusted, executes temperature control operation；
Step S4.3: according to the calcium control instruction out, calcium operation is executed out；
Step S4.4: according to the abnormality processing control instruction, abnormality processing operation is executed, wherein abnormality processing, which operates, includes
It prompts manual intervention, adjust electrode pole span and/or tripping power-off.
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