CN111895788A - Ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system - Google Patents
Ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system Download PDFInfo
- Publication number
- CN111895788A CN111895788A CN202010764864.6A CN202010764864A CN111895788A CN 111895788 A CN111895788 A CN 111895788A CN 202010764864 A CN202010764864 A CN 202010764864A CN 111895788 A CN111895788 A CN 111895788A
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- Prior art keywords
- flue gas
- pressure
- exhaust
- kiln
- automatic
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Classifications
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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
- F27B17/00—Furnaces of a kind not covered by any preceding group
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- 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
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- 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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- 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
- F27D2019/0009—Monitoring the pressure in an enclosure or kiln zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the technical field of battery material sintering, and discloses a kiln exhaust and pressure stabilization system for a ternary battery anode material sintering atmosphere, which comprises an exhaust device, an automatic flue gas adjusting device and a flue gas extraction device which are sequentially connected, wherein the exhaust device is communicated with a kiln, the kiln is also connected with a pressure detection device, the pressure detection device is in signal connection with the automatic flue gas adjusting device, the pressure detection device monitors the pressure of the kiln in real time and provides flue gas flow guidance for the automatic flue gas adjusting device, the flue gas extraction device comprises an exhaust fan and a first pressure detector for detecting the pressure of the flue gas exhausted by the automatic flue gas adjusting device, the first pressure detector is arranged between the exhaust fan and the automatic flue gas adjusting device, and the first pressure detector is in signal connection with the exhaust fan. The exhaust and the pressure stabilization realize closed-loop control, the pressure of the kiln is monitored and fed back to the smoke automatic regulating device, the smoke extracting device senses the smoke pressure, and the exhaust fan adjusts the suction power, so that the favorable atmosphere of the kiln is ensured.
Description
Technical Field
The invention relates to the technical field of battery material sintering, in particular to a kiln exhaust and pressure stabilization system for a ternary battery anode material sintering atmosphere.
Background
The lithium ion anode material as a new-generation new energy material has entered a large-scale practical stage, and with the acceleration of the industrialization process, the demands of various industries and various fields on new energy are increasing.
The sintering process of the lithium ion ternary battery anode material is a process which consumes a large amount of oxygen and generates a large amount of waste gas, and the pressure in an atmosphere kiln is unstable due to the fluctuation of the ventilation of the atmosphere kiln and the large amount of gas generated in the initial sintering stage. If the pressure of the kiln is reduced, the exhaust gas in the kiln is discharged too fast, so that the oxygen partial pressure of the kiln is reduced, and the temperature field of the kiln is changed, which is not beneficial to the generation and growth of crystal grains; if the pressure of the kiln is increased, the exhaust of the waste gas in the kiln is too slow, so that the waste gas in the hearth is not discharged timely, and finally the material performance is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the exhaust and pressure stabilizing system of the ternary battery anode material sintering atmosphere kiln, which can ensure that the gas volume in the kiln meets the sintering requirement.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a anodal material sintering atmosphere kiln of ternary battery exhaust and steady voltage system, including the exhaust apparatus who connects gradually, flue gas automatic regulating apparatus and flue gas extraction device, exhaust apparatus and atmosphere kiln switch-on, still be connected with pressure measurement on the atmosphere kiln, pressure measurement device and flue gas automatic regulating apparatus signal connection, pressure measurement device real-time supervision atmosphere kiln internal pressure and provide flue gas flow regulation guidance to flue gas automatic regulating apparatus, flue gas extraction device includes the air exhauster and carries out the first pressure detector that detects to the flue gas pressure via flue gas automatic regulating apparatus exhaust, first pressure detector sets up between air exhauster and flue gas automatic regulating apparatus, first pressure detector and air exhauster signal connection.
Further, exhaust apparatus includes the flue gas emission branch pipe, and the flue gas emission branch pipe other end meets with flue gas automatic regulating apparatus, has arranged cooler and first valve on the flue gas emission branch pipe in proper order.
Furthermore, the automatic flue gas adjusting device comprises a three-way pipe connected with the flue gas discharge branch pipe, a second interface of the three-way pipe is communicated with the flue gas extracting device through a second valve, a third interface of the three-way pipe is communicated with the flue gas extracting device through two third valves, an automatic adjusting valve is arranged between the two third valves, the compressed air branch pipe is installed at the automatic adjusting valve, the automatic adjusting valve is in signal connection with the pressure detection device, and the automatic adjusting valve realizes an automatic adjusting function through a driving force provided by compressed air in the compressed air branch pipe.
Still further, pressure measurement device includes the survey oxygen concentration output pipeline that connects out from the atmosphere kiln, is equipped with three-way valve and second pressure measurement appearance in proper order according to the gas discharge direction on surveying the oxygen concentration output pipeline, and second pressure measurement appearance and automatically regulated valve signal connection are connected with discharge valve on the third interface of three-way valve.
Further, the smoke extraction device also comprises a smoke primary purification device arranged between the exhaust fan and the first pressure detector.
Further, a silencer is installed at the outlet of the exhaust fan.
Furthermore, one exhaust fan can control the exhaust and pressure stabilization of a plurality of atmosphere kilns.
Compared with the prior art, the invention has the following beneficial effects:
1) the first pressure detector of the smoke extraction device rapidly senses the pressure of the delivered smoke and feeds the pressure back to the exhaust fan, so that the exhaust fan rapidly performs power adjustment and controls the suction of the smoke in the atmosphere kiln in a rearranged mode, and the favorable atmosphere in the atmosphere kiln is ensured;
2) waste gas generated in the sintering process of the ternary positive electrode material in the kiln can be discharged in time, the stability of the pressure of the kiln is continuously and effectively maintained, and sufficient oxygen is ensured to be contained in the ternary battery positive electrode material during sintering and fully react, so that the quality of the product is ensured;
3) the whole exhaust and pressure stabilizing system is easy to operate and maintain, the autonomous control performance is strong, excessive manual intervention operation is not needed, and abnormal phenomena caused by personnel change can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of a kiln exhaust and pressure stabilization system for a sintering atmosphere of a ternary battery positive electrode material in embodiment 1.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are provided for illustrative purposes only and are not intended to be limiting; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
The exhaust and pressure stabilizing system mainly aims at sintering of a nickel-cobalt-manganese ternary precursor and a lithium source mixed material in an atmosphere kiln, and comprises an exhaust device, an automatic flue gas adjusting device and a flue gas extraction device which are sequentially connected, wherein the exhaust device is communicated with the atmosphere kiln 1, the atmosphere kiln is further connected with a pressure detection device, the pressure detection device is in signal connection with the automatic flue gas adjusting device, and the pressure detection device monitors the pressure in the atmosphere kiln in real time and provides flue gas overflow regulation guidance for the automatic flue gas adjusting device.
The smoke extraction device comprises an exhaust fan 21 and a first pressure detector 22 for detecting the pressure of smoke exhausted by the smoke automatic adjusting device, the first pressure detector 22 is arranged between the exhaust fan 21 and the smoke automatic adjusting device, the first pressure detector 22 is in signal connection with the exhaust fan 21, and the smoke is output to the first pressure detector 22 from the smoke automatic adjusting device through a pipeline.
Particularly, the exhaust and steady voltage system of this application is through pressure detection device instant monitoring atmosphere kiln 1 internal pressure and then instruct flue gas automatic regulating apparatus to adjust the aperture size, in time discharge unnecessary flue gas when atmosphere kiln pressure is too big, then reduce flue gas discharge amount and exhaust velocity when pressure hour, detect the pressure of pipeline output flue gas by first pressure measurement appearance 22 simultaneously, and with pressure measurement result signal transmission to air exhauster 21, air exhauster 21 adjusts the size of flue gas extraction volume according to this signal feedback, guarantee in the atmosphere kiln 1, the stability of pipeline internal pressure, simultaneously in time discharge the flue gas that the sintering produced, the system wholly forms a closed loop feedback mechanism, effectively guarantee the quality of sintering ternary cathode material.
The exhaust device comprises a flue gas discharge branch pipe 31, the other end of the flue gas discharge branch pipe 31 is connected with an automatic flue gas adjusting device, a cooler 32 and a first valve 33 are sequentially arranged on the flue gas discharge branch pipe 31, and the cooler 32 rapidly cools high-temperature flue gas coming out of the atmosphere kiln 1.
The automatic flue gas adjusting device comprises a three-way pipe 41 connected with the flue gas discharge branch pipe 31, a second interface of the three-way pipe 41 is communicated with the flue gas extracting device through a second valve 42, a third interface of the three-way pipe 41 is communicated with the flue gas extracting device through two third valves 43, an automatic adjusting valve 44 is arranged between the two third valves 43, a compressed air branch pipe 45 is arranged at the automatic adjusting valve 44, the automatic adjusting valve 44 is in signal connection with a pressure detecting device, the pressure detecting device provides an adjusting instruction for the automatic adjusting valve 44, and the automatic adjusting valve 44 realizes the automatic opening adjusting function through a driving force provided by the compressed air pressure in the compressed air branch pipe 45; when the pressure detection device detects that the pressure is too high, the opening of the automatic regulating valve 44 is automatically increased, and the smoke discharge capacity is increased; the pressure detecting device detects that the pressure is too small, the opening of the automatic regulating valve 44 is automatically reduced, and the smoke discharge is reduced.
The flue gas automatic regulating device is connected with two valve branches through a three-way pipe 41, on one hand, the normal discharge of the flue gas in the atmosphere kiln 1 is ensured through a second valve 42, on the other hand, the discharge capacity of the flue gas is regulated through an automatic regulating valve 44 on the other branch, and the continuous and stable pressure in the atmosphere kiln 1 is ensured.
Pressure measurement includes the flue gas output pipe 51 that connects out from atmosphere kiln 1, be equipped with three-way valve 52 and second pressure measurement appearance 53 in proper order according to the gas discharge direction on the flue gas output pipe 51, second pressure measurement appearance 53 and automatically regulated valve 44 signal connection in time feed back atmosphere kiln 1 pressure, be connected with discharge valve 54 on the third interface of three-way valve 52, in time will be used for the gas outgoing of test, the discharge valve kneck installation has the oxygen analyzer to detect oxygen concentration.
Because of the anodal material of ternary battery in the sintering process in atmosphere kiln, only violently produce a large amount of waste gases in the section reaction that heaies up, along with the lapse of time, the sintering process no longer produces other waste gases, only remain a little waste gas in the saggar and the material and need discharge, consequently, the flue gas oxygen content of discharging is higher in the atmosphere kiln 1, can carry out cyclic utilization to this part flue gas, the flue gas extraction device of this application still including setting up flue gas primary purification device 23 between air exhauster 21 and first pressure detector 22, remove dust to exhaust flue gas, do benefit to follow-up continuation and drop into use.
A muffler 24 is arranged at the outlet of the exhaust fan 21 to avoid generating excessive noise in the working process.
In fact, the exhaust and steady pressure of many atmosphere kilns 1 of an air exhauster 21 steerable, each atmosphere kiln has solitary exhaust apparatus and flue gas automatic regulating apparatus, and the exhaust flue gas then assembles into same trunk line entering flue gas extraction device behind respective flue gas automatic regulating apparatus in each atmosphere kiln, the embodiment is the discharge of four atmosphere kiln flue gases of an air exhauster control, ensure that the pressure is stable in atmosphere kiln 1, the flue gas extraction volume is suitable, the heat that the flue gas was taken away lasts and even, can effectively stabilize the temperature field in the atmosphere kiln, the interior oxygen partial pressure of atmosphere kiln can not change simultaneously, oxygen concentration stability can effectively be ensured, and then show the quality that improves the material.
The operation of the exhaust and pressure stabilizing system of the embodiment is as follows: at the initial stage of sintering, particularly at the stage of sintering temperature of 250-650 ℃, a large amount of carbon dioxide and water are generated, the total volume of the flue gas in the atmosphere kiln begins to expand, according to a working procedure set by a system, a pressure detection device begins to detect the pressure in the atmosphere kiln, and sends an instruction to an automatic regulating valve in combination with the pressure result condition, and the valve opening of the automatic regulating valve is properly increased, so that the pressure of a pipeline behind the flue gas automatic regulating device changes, at the moment, after a first pressure detector of the flue gas extraction device detects the pressure of the pipeline, an instruction is sent to an exhaust fan, the operating frequency of the exhaust fan is properly regulated to maintain the stability of the pressure in the atmosphere kiln, and. When the pressure in the atmosphere kiln is reduced, the opening degree is reduced only by the automatic flue gas regulating valve.
The exhaust and pressure stabilizing system is easy to operate and maintain integrally, strong in autonomous controllability, free of excessive manual intervention operation and free of abnormal phenomenon caused by personnel change.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a anodal material sintering atmosphere kiln of ternary battery exhaust and steady voltage system, a serial communication port, including the exhaust apparatus who connects gradually, flue gas automatic regulating apparatus and flue gas extraction device, exhaust apparatus and atmosphere kiln switch-on, still be connected with pressure measurement on the atmosphere kiln, pressure measurement and flue gas automatic regulating apparatus signal connection, pressure measurement real-time supervision atmosphere kiln internal pressure and provide flue gas excess flow regulation to flue gas automatic regulating apparatus and guide, flue gas extraction device includes the air exhauster and carries out the first pressure detector that detects to the flue gas pressure via flue gas automatic regulating apparatus exhaust, first pressure detector sets up between air exhauster and flue gas automatic regulating apparatus, first pressure detector and air exhauster signal connection.
2. The ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system according to claim 1, wherein the exhaust device comprises a flue gas emission branch pipe, the other end of the flue gas emission branch pipe is connected with an automatic flue gas adjusting device, and a cooler and a first valve are sequentially arranged on the flue gas emission branch pipe.
3. The kiln exhaust and pressure stabilization system for the sintering atmosphere of the ternary battery anode material according to claim 2, wherein the automatic flue gas adjusting device comprises a three-way pipe connected with a flue gas discharge branch pipe, a second interface of the three-way pipe is communicated with the flue gas extraction device through a second valve, a third interface of the three-way pipe is communicated with the flue gas extraction device through two third valves, an automatic adjusting valve is arranged between the two third valves, a compressed air branch pipe is arranged at the automatic adjusting valve, the automatic adjusting valve is in signal connection with the pressure detection device, and the automatic adjusting valve realizes an automatic adjusting function through a driving force provided by compressed air in the compressed air branch pipe.
4. The ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system according to claim 3, wherein the pressure detection device comprises an oxygen concentration measurement output pipeline connected from the atmosphere kiln, a three-way valve and a second pressure detector are sequentially arranged on the oxygen concentration measurement output pipeline according to a gas exhaust direction, the second pressure detector is in signal connection with an automatic regulating valve, and an exhaust valve is connected to a third interface of the three-way valve.
5. The ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system according to claim 1, wherein the flue gas extraction device further comprises a flue gas primary purification device arranged between the exhaust fan and the first pressure detector.
6. The ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system according to claim 1, wherein a muffler is installed at an outlet of the exhaust fan.
7. The ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system according to claim 1, wherein one exhaust fan can control exhaust and pressure stabilization of a plurality of atmosphere kilns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010764864.6A CN111895788B (en) | 2020-08-03 | 2020-08-03 | Ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010764864.6A CN111895788B (en) | 2020-08-03 | 2020-08-03 | Ternary battery anode material sintering atmosphere kiln exhaust and pressure stabilization system |
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| CN111895788A true CN111895788A (en) | 2020-11-06 |
| CN111895788B CN111895788B (en) | 2022-02-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251942A (en) * | 2021-11-30 | 2022-03-29 | 广东邦普循环科技有限公司 | Production line and production method for lithium ion battery anode material |
| CN114251942B (en) * | 2021-11-30 | 2024-05-10 | 广东邦普循环科技有限公司 | Production line and production method of lithium ion battery anode material |
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| JPH09257376A (en) * | 1996-03-21 | 1997-10-03 | Japan Nuclear Fuel Co Ltd<Jnf> | Control system for atmospheric furnace pressure |
| CN201825838U (en) * | 2010-10-28 | 2011-05-11 | 成都四通新能源技术有限公司 | Auxiliary furnace pressure stabilizing system of glass furnace utilizing waste heat for power generation |
| CN203550607U (en) * | 2013-09-13 | 2014-04-16 | 长沙矿冶研究院有限责任公司 | Negative pressure pumping device |
| CN110274487A (en) * | 2019-06-28 | 2019-09-24 | 台嘉玻璃纤维有限公司 | A kind of glass fiber kiln furnace pressure automatic control device and method |
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2020
- 2020-08-03 CN CN202010764864.6A patent/CN111895788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257376A (en) * | 1996-03-21 | 1997-10-03 | Japan Nuclear Fuel Co Ltd<Jnf> | Control system for atmospheric furnace pressure |
| CN201825838U (en) * | 2010-10-28 | 2011-05-11 | 成都四通新能源技术有限公司 | Auxiliary furnace pressure stabilizing system of glass furnace utilizing waste heat for power generation |
| CN203550607U (en) * | 2013-09-13 | 2014-04-16 | 长沙矿冶研究院有限责任公司 | Negative pressure pumping device |
| CN110274487A (en) * | 2019-06-28 | 2019-09-24 | 台嘉玻璃纤维有限公司 | A kind of glass fiber kiln furnace pressure automatic control device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251942A (en) * | 2021-11-30 | 2022-03-29 | 广东邦普循环科技有限公司 | Production line and production method for lithium ion battery anode material |
| CN114251942B (en) * | 2021-11-30 | 2024-05-10 | 广东邦普循环科技有限公司 | Production line and production method of lithium ion battery anode material |
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| CN111895788B (en) | 2022-02-08 |
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