CN109612269A - For oxygen content autocontrol method in the kiln of lithium battery material sintering - Google Patents
For oxygen content autocontrol method in the kiln of lithium battery material sintering Download PDFInfo
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- CN109612269A CN109612269A CN201910063768.6A CN201910063768A CN109612269A CN 109612269 A CN109612269 A CN 109612269A CN 201910063768 A CN201910063768 A CN 201910063768A CN 109612269 A CN109612269 A CN 109612269A
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- China
- Prior art keywords
- kiln
- oxygen
- oxygen concentration
- oxygen content
- concentration
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
Abstract
The invention discloses it is a kind of for lithium battery material sintering kiln in oxygen content autocontrol method, comprising the following steps: S1, input kiln in difference in oxygen concentration battery output electromotive force E；S2, the target oxygen concentration in kiln is calculated according to the output electromotive force E of difference in oxygen concentration battery；S3, target oxygen concentration is compared with preset standard sample oxygen concentration, kiln air inflow is controlled according to fiducial value.The method of the present invention can form closed-loop control, the oxygen content value of needs need to only be specified on computers, be edited by technologist, the control process of oxygen content will be automatically performed, eliminate the process that technique person manually adjusts oxygen content, shorten the technique adjustment period of technologist, production cost is reduced, full-automatic production is realized, improves production efficiency.
Description
Technical field
The control method burnt the present invention relates to lithium battery material more particularly to a kind of kiln for lithium battery material sintering
Interior oxygen content autocontrol method.
Background technique
Lithium battery material sintering sealing roller furnace is mainly used for lithium battery anode ternary under the conditions of oxygen atmosphere or oxygen-enriched atmosphere
The continuous sintering of material NCM811 or NCA or NCM622 material.Equipment by furnace body, pipeline, cleaning storehouse, automatic feeding system and from
The sealing roller kilns of the compositions such as dynamic temperature control system.In anode material of lithium battery production process, kiln sintering is most important
A procedure, kiln sintering process link can influence the Key Performance Indicator of anode material of lithium battery, and the oxygen in kiln
Content is very big on the quality of the product of material and consistency influence, and oxygen content is insufficient or too high oxygen level all can be to the anti-of material
Vital influence should be generated, therefore, the on-line monitoring of oxygen content is very necessary for kiln.
About the control of oxygen content, currently, domestic all equipment manufacturers be all made of by main pipeline, branch pipe(tube), flowmeter,
The air-channel system of the compositions such as control valve, control mode then manually control, i.e., rule of thumb by technologist, manually adjust up to
30 several suspended body flowmeters realize the purpose to Control for Oxygen Content in furnace, this regulative mode, to the technical level of technologist
It is required that it is very high, the aperture of corresponding suspended body flowmeter is often adjusted by the technical indicator of institute's sintering powder, and so on directly
To satisfactory product is sintered out, as seen from Figure 1, such a feedback regulation mode high production cost, technology difficulty
Greatly.
There are also the control device for oxygen content on high-end agglomerating plant mainly by oxygen instrument, flowmeter, row pressure/exhaust gas
The composition such as road, the Control for Oxygen Content oxygen analyser for being mainly used in hot environment only have single channel to output and input, however, needing
Operator is wanted to test kiln key atmosphere point manually, this test mode consuming time is more, wasting manpower and material resources.Together
When, it is unstable that this mode may cause atmosphere, and oxygen content fluctuation is larger, increases gas consumption, and product qualification rate is low.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide one kind and are not necessarily to manual adjustment, entirely oneself
Oxygen content autocontrol method in the dynamic kiln for lithium battery material sintering adjusted.
In order to solve the above technical problems, the invention adopts the following technical scheme:
It is a kind of for lithium battery material sintering kiln in oxygen content autocontrol method, comprising the following steps:
S1, input kiln in difference in oxygen concentration battery output electromotive force E；
S2, the target oxygen concentration in kiln is calculated according to the output electromotive force E of difference in oxygen concentration battery；
S3, target oxygen concentration is compared with preset standard sample oxygen concentration, the air inlet of kiln is controlled according to fiducial value
Amount.
As a further improvement of the above technical scheme, it is preferred that in the step S2, the calculation method of target oxygen concentration
Are as follows: according to nernst equationHigh concentration side partial pressure of oxygen P " O is calculated2, high concentration side partial pressure of oxygen
P"O2The as target oxygen concentration, wherein R is ideal gas constant, and T is battery work absolute temperature, and F is that faraday is normal
Number, P " O2For high concentration side partial pressure of oxygen, P'O2For low concentration side partial pressure of oxygen.
As a further improvement of the above technical scheme, it is preferred that in the step S3, kiln is controlled according to fiducial value
The specific method of air inflow is PID control method.
As a further improvement of the above technical scheme, it is preferred that in the step S1, examined using the lambda sensor containing zirconium
Measure the output electromotive force E of the difference in oxygen concentration battery in kiln.
Compared with the prior art, the advantages of the present invention are as follows:
Oxygen content autocontrol method in kiln for lithium battery material sintering of the invention calculates kiln discharge by detection
Real-time oxygen concentration (oxygen content) in furnace, is input to controller, while pre-entering the mark of certain agglomerated material in the controller
Quasi- oxygen concentration (required oxygen concentration), calculated target oxygen concentration and standard sample oxygen concentration are compared, according to comparing
As a result, when target oxygen concentration be less than standard sample oxygen concentration when, controller control increase kiln air inlet pipe air inflow, later into
Row calculates matching, until both target oxygen concentration and standard sample oxygen concentration are close, when target oxygen concentration is less than standard sample oxygen concentration
When, controller control reduces the air inflow of kiln air inlet pipe, calculating matching is being carried out later, until target oxygen concentration and standard sample
Both oxygen concentrations are close；This method can form closed-loop control, and technologist only need to carry out on computers the oxygen content value of needs
Specified, editor, will be automatically performed the control process of oxygen content, eliminate the process that technique person manually adjusts oxygen content, shorten work
The technique adjustment period of artist person reduces production cost, improves production efficiency, fundamentally solves asking for Control for Oxygen Content
Topic, realizes the automatic control of this critical process factor, thus reach the unattended of production process, full-automation production.
Detailed description of the invention
Fig. 1 is the flow diagram of the Control for Oxygen Content in kiln in the prior art.
Fig. 2 is the flow diagram of the oxygen content autocontrol method in the present invention in kiln.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, invention is further described in detail.
Oxygen content autocontrol method in the kiln for lithium battery material sintering of the present embodiment, comprising the following steps:
S1, input kiln in difference in oxygen concentration battery output electromotive force E；
S2, the target oxygen concentration in kiln is calculated according to the output electromotive force E of difference in oxygen concentration battery；
S3, target oxygen concentration is compared with preset standard sample oxygen concentration, kiln air inflow is controlled according to fiducial value.
As shown in Fig. 2, calculate real-time oxygen concentration (oxygen content) in kiln by detection, be input to controller (or
Computer), while the standard oxygen concentration (required oxygen concentration) of certain agglomerated material is pre-entered in the controller, it will calculate
Target oxygen concentration out is compared with standard sample oxygen concentration, according to comparison result, when target oxygen concentration is dense less than standard sample oxygen
When spending, controller control increases the air inflow of kiln air inlet pipe, calculating matching is being carried out later, until target oxygen concentration and standard
Both sample oxygen concentrations are close, when target oxygen concentration is less than standard sample oxygen concentration, controller control reduce kiln air inlet pipe into
Tolerance is carrying out calculating matching later, until both target oxygen concentration and standard sample oxygen concentration are close.This method can form closed loop
The oxygen content value of needs need to only be specified on computers, be edited by control, technologist, will be automatically performed the control of oxygen content
Process eliminates the process that technique person manually adjusts oxygen content, shortens the technique adjustment period of technologist, and reduction is produced into
This, improves production efficiency, fundamentally solves the problems, such as Control for Oxygen Content, realize the automatic control of this critical process factor
System, thus reach the unattended of production process, full-automation production.
In the present embodiment, firstly, detecting the difference in oxygen concentration battery in kiln using the lambda sensor containing zirconium in step S1
Output electromotive force E.Based on this, in step S2, the calculation method of target oxygen concentration are as follows:
According to can this special principle, in zirconium pipe (lambda sensor containing zirconium) both ends oxonium ion from the big side of oxygen concentration to concentration
Small side migration, thus form potential difference, i.e. the output electromotive force E (millivolt) of difference in oxygen concentration battery,
According to the E of acquisition, high concentration side partial pressure of oxygen P " O is calculated2, high concentration side partial pressure of oxygen P " O2Target oxygen as
Concentration, wherein R is ideal gas constant (8.314J/ (K*mol)), and T is battery work absolute temperature, and F is Faraday constant
(96500kJ/ (V*mol)), P'O2For low concentration side partial pressure of oxygen, in the present embodiment, P'O2With the oxygen content in atmosphere be reference
Value.
It is PID control method according to the specific method that fiducial value controls kiln air inflow in step S3 in the present embodiment.
Specially according to detection target oxygen concentration, which is compared with standard sample oxygen concentration, according to obtained difference come
Air inflow is adjusted to be compared the value with standard sample oxygen concentration then by detecting another target oxygen concentration again, according to
To difference adjust air inflow, carry out repeatedly, until the target oxygen concentration in detection kiln connects with standard sample oxygen concentration
Closely.The closed loop PID control, and the pid parameter can be preset as multistage according to actual oxygen content setting value, so, not
Same oxygen content setting value section calls and matches different pid parameters, has reached and has preferably controlled effect than traditional single hop PID
Fruit.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (4)
1. oxygen content autocontrol method in a kind of kiln for lithium battery material sintering, which is characterized in that including following step
It is rapid:
S1, input kiln in difference in oxygen concentration battery output electromotive force E；
S2, the target oxygen concentration in kiln is calculated according to the output electromotive force E of difference in oxygen concentration battery；
S3, target oxygen concentration is compared with preset standard sample oxygen concentration, the air inflow of kiln is controlled according to fiducial value.
2. oxygen content autocontrol method in the kiln according to claim 1 for lithium battery material sintering, feature
It is, in the step S2, the calculation method of target oxygen concentration are as follows: according to nernst equationIt is calculated
High concentration side partial pressure of oxygen P " O2, the high concentration side partial pressure of oxygen P " O2The as target oxygen concentration, wherein R is perfect gas
Constant, T are battery work absolute temperature, and F is Faraday constant, P " O2For high concentration side partial pressure of oxygen, P'O2For low concentration side oxygen
Pressure.
3. oxygen content autocontrol method in the kiln according to claim 1 for lithium battery material sintering, feature
It is, is PID control method according to the specific method that fiducial value controls the air inflow of kiln in the step S3.
4. oxygen content autocontrol method in the kiln according to claim 1 for lithium battery material sintering, feature
It is, in the step S1, the output electromotive force E of the difference in oxygen concentration battery in kiln is detected using the lambda sensor containing zirconium.
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| CN201910063768.6A CN109612269A (en) | 2019-01-23 | 2019-01-23 | For oxygen content autocontrol method in the kiln of lithium battery material sintering |
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| CN201910063768.6A CN109612269A (en) | 2019-01-23 | 2019-01-23 | For oxygen content autocontrol method in the kiln of lithium battery material sintering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116294578A (en) * | 2023-05-22 | 2023-06-23 | 天津巴莫科技有限责任公司 | Roller kiln and gas control device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202304460U (en) * | 2011-03-04 | 2012-07-04 | 南京恒创磁电科技有限公司 | Automatic control system for sintering of soft magnetic ferrite |
| CN103808784A (en) * | 2014-02-17 | 2014-05-21 | 华北电力大学（保定） | Oxygen content measurement device and oxygen content measurement method for zirconium oxide |
| CN203672119U (en) * | 2014-01-10 | 2014-06-25 | 长沙恒威热能科技有限公司 | Automatically-controlled oxygen-enriched combustion system for nonferrous metallurgy converter |
| CN106017117A (en) * | 2016-07-01 | 2016-10-12 | 汕头高新区环绿新能源研发有限公司 | Combustion control method and device of ceramic kiln |
| EP3418401A1 (en) * | 2017-06-22 | 2018-12-26 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Shaft furnace and injection of oxidizing agent therein |
-
2019
- 2019-01-23 CN CN201910063768.6A patent/CN109612269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202304460U (en) * | 2011-03-04 | 2012-07-04 | 南京恒创磁电科技有限公司 | Automatic control system for sintering of soft magnetic ferrite |
| CN203672119U (en) * | 2014-01-10 | 2014-06-25 | 长沙恒威热能科技有限公司 | Automatically-controlled oxygen-enriched combustion system for nonferrous metallurgy converter |
| CN103808784A (en) * | 2014-02-17 | 2014-05-21 | 华北电力大学（保定） | Oxygen content measurement device and oxygen content measurement method for zirconium oxide |
| CN106017117A (en) * | 2016-07-01 | 2016-10-12 | 汕头高新区环绿新能源研发有限公司 | Combustion control method and device of ceramic kiln |
| EP3418401A1 (en) * | 2017-06-22 | 2018-12-26 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Shaft furnace and injection of oxidizing agent therein |
Non-Patent Citations (1)
| Title |
|---|
| 吴元徽: "《热处理工（中级）》", 31 July 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116294578A (en) * | 2023-05-22 | 2023-06-23 | 天津巴莫科技有限责任公司 | Roller kiln and gas control device thereof |
| CN116294578B (en) * | 2023-05-22 | 2023-08-08 | 天津巴莫科技有限责任公司 | Roller kiln and gas control device thereof |
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