CN108168307B - It is a kind of can be in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen - Google Patents

It is a kind of can be in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen Download PDF

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Publication number
CN108168307B
CN108168307B CN201711471766.8A CN201711471766A CN108168307B CN 108168307 B CN108168307 B CN 108168307B CN 201711471766 A CN201711471766 A CN 201711471766A CN 108168307 B CN108168307 B CN 108168307B
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China
Prior art keywords
oxygen
sintering
nickel catalyst
compressed air
wasted nickel
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CN201711471766.8A
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CN108168307A (en
Inventor
关成立
田国锋
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SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd
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SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00Furnaces of a kind not covered by any preceding group
    • F27B17/0016Chamber type furnaces
    • F27B17/0083Chamber type furnaces with means for circulating the atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02Supplying steam, vapour, gases, or liquids

Abstract

The invention discloses it is a kind of can in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen, including, the sintering furnace for sintering three-element positive electrode assists waste gas exhausting device, wasted nickel catalyst device into oxygen unit.The exhaust gas that the sintering furnace of sintering three-element positive electrode is discharged by exhaust outlet, the wasted nickel catalyst device by being mounted on vent position are detected, and output signals to sintering furnace into oxygen unit and auxiliary waste gas exhausting device by testing result.The size into amount of oxygen is adjusted according to the information that waste gas monitoring device is fed back into oxygen unit, come amount of oxygen required when meeting material reaction.Auxiliary waste gas exhausting device adjusts the size into compressed air according to the information that waste gas monitoring device is fed back, can timely by material reaction when generated exhaust gas can preferably achieve the purpose that so energy-efficient to better assure that the sintering quality of material.

Description

It is a kind of can be in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen
Technical field
The present invention relates to anode material of lithium battery synthesis device fields more particularly to one kind to be sintered three under excess oxygen The air inlet and outlet device of first cell positive material.
Background technique
With the quickening and the improvement of people's living standards of process of industrialization, in daily life, commercial operation, industry is raw It produces, the fields such as construction are also increasing to the demand of the energy, and new energy is being researched and developed with production capacity by various aspects Factor restrict.Wherein the sinter bonded of lithium electricity ternary cell positive material needs a large amount of oxygen to supply at operation, has simultaneously More exhaust gas discharge, and this common existing environmental condition frequently results in oxygen atmosphere deficiency, generates after material reaction Exhaust gas can not be discharged in time, influence material quality.This will restrict the quality-improving of material, it is therefore desirable to which introducing one kind can be in richness The air inlet and outlet device of sintering three-element cell positive material under the conditions of oxygen.
Summary of the invention
The object of the present invention is to provide a kind of air inlet and outlet device of sintering three-element cell positive material, which guarantees quick And effectively the exhaust gas that ternary cell positive material is generated in sintering is discharged, keep ternary cell positive material in sintering It can react sufficiently, and be easy to carry out attended operation, while can guarantee ternary when sintering according to the variation of different sintering stages Cell positive material amount of oxygen required when reacting can exclude to change because of the personnel of operative employee, to sintering three-element anode The difference generated when material.
The technical solution of the present invention is as follows:
It is a kind of can in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen, including oxygen inlet duct, Assist waste gas exhausting device and wasted nickel catalyst device, the oxygen inlet duct, including connection sintering furnace and into sintering furnace The oxygen channel of oxygen is provided needed for material reaction, sets gradually adjusting oxygen according to the direction that oxygen advances on oxygen channel Electric control valve, oxygen gauge and the control valve of air inflow;The auxiliary waste gas exhausting device, including connection sintering furnace waste discharge Feed channel is successively arranged valve, the pressure gauge for detecting institute's waste air and company according to exhaust gas direction of advance in the waste discharge feed channel Connect the auxiliary exhaust threeway of wasted nickel catalyst device;In the wasted nickel catalyst device, including detection sintering furnace produced by material reaction Waste gas content wasted nickel catalyst instrument, the wasted nickel catalyst instrument is connect by auxiliary exhaust threeway with waste discharge feed channel, described auxiliary Exhaust-assisting threeway is also connect with the compressed air pipe for providing compressed air, before on compressed air pipe according to compressed air Into direction be successively arranged electric control valve and control valve, the wasted nickel catalyst instrument is transmitted by data connecting line output signal To the electric control valve and the electric control valve on compressed air pipe being located on oxygen channel.
Further, the auxiliary exhaust threeway includes connecting wasted nickel catalyst instrument, the supervisor of compressed air pipe and connection
The branch pipe of waste discharge feed channel, the branch pipe of the connection waste discharge feed channel and the angle of supervisor of compressed air pipe are 15-30 degree, the branch pipe extend internally.
The invention has the benefit that
The present invention, as power, the exhaust gas generated after the material reaction in sintering furnace is arranged in time by using compressed air Out, be discharged exhausted air quantity and oxygen air inflow be it is corresponding, waste discharge tolerance to the air inflow of oxygen be it is directly proportional, no matter The big minor adjustment for being the air inflow of waste discharge tolerance or oxygen is realized by electric control valve, and motorized adjustment valve regulation Throughput is determined according to wasted nickel catalyst instrument signal everywhere, can effectively detect exhaust gas by wasted nickel catalyst device Size is measured, and the exhaust gas generated after the material reaction in sintering furnace is discharged in time, while will be needed for material reaction in sintering furnace Amount of oxygen be replenished in time sufficiently, provide more favorable atmosphere for the reaction of material in sintering furnace, to improve yield, contract Short sintering time, more improves the quality of product.Generated exhaust gas is in material reaction mistake when avoiding due to material reaction To the adverse effect of materials quality in journey.
Detailed description of the invention
Fig. 1 is that one kind can be in the overall structure signal of the air inlet and outlet device of sintering three-element cell positive material under excess oxygen Figure.
In figure: 1- wasted nickel catalyst instrument, 2- electric control valve, 3- electric control valve, 4- assist waste air threeway, 5- pressure Table, 6- pressure gauge, 7- valve, 8- oxygen channel, 9- waste discharge feed channel, 10- compressed air pipe, 11- signal wire, 12- signal Line, 13- valve, 14- valve, 15- sintering furnace.
Specific embodiment
Invention is further explained with specific embodiment for explanation with reference to the accompanying drawing.
It is a kind of can in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen, including oxygen inlet duct, Assist waste gas exhausting device and wasted nickel catalyst device, the oxygen inlet duct, including connection sintering furnace and into sintering furnace The oxygen channel 8 of oxygen is provided needed for material reaction, sets gradually adjusting oxygen according to the direction that oxygen advances on oxygen channel Electric control valve 2, oxygen gauge 5 and the control valve 13 of gas air inflow;
The auxiliary waste gas exhausting device, including 15 waste discharge feed channel of sintering furnace is connected, according to useless in the waste discharge feed channel Gas direction of advance is successively arranged valve 7, detects the pressure gauge 6 of institute's waste air and connects the auxiliary exhaust threeway of wasted nickel catalyst device 4;The wasted nickel catalyst device, the wasted nickel catalyst instrument 1 including waste gas content caused by material reaction in detection sintering furnace are described Wasted nickel catalyst instrument is connect by auxiliary exhaust threeway with waste discharge feed channel, the auxiliary exhaust threeway also with offer compressed air Compressed air pipe 10 connects, by being successively arranged electric control valve according to the direction that compressed air is advanced on compressed air pipe 3 and control valve, the wasted nickel catalyst instrument 1 electric adjustable on oxygen channel is passed to by data connecting line output signal Save valve and the electric control valve on compressed air pipe.
Further, the auxiliary exhaust threeway includes connecting wasted nickel catalyst instrument, the supervisor of compressed air pipe and connection
The branch pipe of waste discharge feed channel 9, the folder of the supervisor 10 of the branch pipe and compressed air pipe of the connection waste discharge feed channel 9 Angle is 15-30 degree, and the branch pipe extends internally, and can effectively guarantee that compressed air can be caused by material reaction in this way Exhaust gas is timely and effectively discharged from waste discharge feed channel, and exhaust gas row is adjusted according to the signal that waste gas content detection device 1 is fed back The electric control valve 3 in device is put to adjust the air inflow of compressed air, using compressed air by assisting waste air threeway 4 will Exhaust gas caused by material reaction is timely discharged outside sintering furnace in sintering furnace, ensure that oxygen concentration and material in sintering furnace Atmosphere needed for reaction, environment needed for guaranteeing material reaction to a greater extent improve efficiency and quality content.
Sintering three-element cell positive material in the different stages, over time with the raising of temperature, can generate not Same synthetic reaction, while can also generate different gas.
Preparation before sintering --- lead to purity into sintering furnace in advance up to 99.9% oxygen, oxygen is passed through by oxygen channel 8 The electric control valve 2 for crossing automatic adjustment oxygen flow is passing through pressure gauge 5, by reserved maintenance valve 13, is entering sintering In furnace 15, lead to the pre- logical oxygen of sintering furnace 15 in advance and be gradually filled in sintering furnace space in addition to material, extra oxygen via Waste discharge feed channel 9, by reserved maintenance valve 7, by pressure gauge 6, then helped out by the discharge for exhaust gas Auxiliary exhaust threeway 4 is discharged at the detection mouth of wasted nickel catalyst instrument 1, and the time of pre- logical oxygen is 0.5-1 hours, is then had specially The method of door goes whether verifying oxygen fills with entire sintering furnace 15.
Before the cold stage of sintering, i.e., 50 degree, it is anti-that any synthesis is not just being had in sintering three-element cell positive material It answers, what other gas will not be generated, at this moment, gas detected by wasted nickel catalyst instrument 1 is the higher oxygen of purity, this When, the signal of the be transferred to electric control valve 2.3 of wasted nickel catalyst instrument is that the air inflow of the oxygen flow empty with compression is invariable.
When sintering temperature continues to rise to 150 degree or so, the moisture absorbed in ternary cell positive material will be steamed Hair, at this moment, the gas that wasted nickel catalyst instrument 1 detects are the mixed gas of oxygen and vapor, in order to what is generated when making and being sintered The environment of material synthetic reaction is discharged in vapor in time, and according to the program set, wasted nickel catalyst instrument 1 can be to electric control valve 2 Instruction is issued, the appropriate air inflow for increasing oxygen, at this moment, purity can increase up to 99.9% oxygen by the flow of oxygen channel 8 Greatly, the pointer of pressure gauge 5 can show that pressure can increase, and the pressure value of the pressure gauge 6 at gas outlet can also rise with it, and give up simultaneously Gas detector 1 can also be issued to electric control valve 3 and be instructed, the appropriate air inflow for increasing compressed air pipe 10, by helping waste discharge The vapor that gas threeway 4 generates material itself is discharged into timely to discharge until institute's containing water vapor in material is all arranged Out, guarantee the purity of next step material oxygen in the oxidation reaction.
When sintering temperature is to 250 degree or so, oxidation reaction takes place in ternary cell positive material, this process will be held Continue 400 degree or so, at the same time, it will generate a large amount of steam, and at this time must the oxygen of a large amount of high-purity join With this oxidation reaction, according to the program set, wasted nickel catalyst instrument 1 can be issued to electric control valve 2 and be instructed, suitably increase oxygen Air inflow, while wasted nickel catalyst instrument 1 can also be issued to electric control valve 3 and be instructed, and the appropriate air inflow for increasing compressed air is led to The vapor generated during helping waste air threeway 4 to close material is crossed timely to discharge, is discharged into the detection of wasted nickel catalyst instrument 1 Mouthful, until vapor generated in material oxidation reaction process is all discharged, wasted nickel catalyst instrument 1 also can be by detecting The reduction of water vapour content, timely adjustment electric control valve 2 and electric control valve 3 control oxygen flow and control compressed air Flow is all reduced, guarantee next step material carry out other reaction process in oxygen purity while, also avoid oxygen with And the excess waste of compressed air.
Sintering temperature in the process will by 400 degree to 650 degree of stage for the process that presoma is reacted with Na2co3 The exhaust gas such as a large amount of Co2 can be generated, the appearance and increase of Co2 and other gases can reduce oxygen during material reaction Content and purity greatly affected the quality of finished product, at this point, wasted nickel catalyst instrument 1 can be according to the program set, to electric adjustable It saves valve 2 and issues instruction, the air inflow of appropriate increase oxygen, while wasted nickel catalyst instrument 1 can also be issued to electric control valve 3 and be instructed, The appropriate air inflow for increasing compressed air, passes through the Co2 for helping waste air threeway 4 that will generate in presoma and Na2Co3 reaction process Equal exhaust gas timely give discharge, until the exhaust gas such as generated Co2 are all discharged during presoma is reacted with Na2co3, Guarantee the content and purity of required oxygen during presoma is reacted with Na2co3, thus ensure that the quality of finished product, with The exhaust gas such as the Co2 generated in presoma and Na2Co3 reaction process be constantly discharged, constantly reduce, wasted nickel catalyst instrument 1 is suitable When adjust that electric control valve 2 and electric control valve 3 control oxygen flow and control compressed air require is all reduced.
With the continuous raising of temperature, 800 or so are reached, the ternary cell positive material in sintering furnace can continual and steady one The section time, other exhaust gas will not be generated in the meantime, oxygen air inflow and capacity at this moment remains basically stable, and is restored to initial Invariable state protects the last stage of ternary cell positive material sintering.

Claims (1)

1. one kind can be auxiliary in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen, including oxygen inlet duct Help waste gas exhausting device and wasted nickel catalyst device, the oxygen inlet duct, including connection sintering furnace and the object into sintering furnace Material reaction needed for provide oxygen oxygen channel, on oxygen channel according to oxygen advance direction set gradually adjust oxygen into Electric control valve, oxygen gauge and the control valve of tolerance;The auxiliary waste gas exhausting device, including connection sintering furnace waste air Pipeline is successively arranged valve, the pressure gauge for detecting institute's waste air and connection according to exhaust gas direction of advance in the waste discharge feed channel The auxiliary exhaust threeway of wasted nickel catalyst device;In the wasted nickel catalyst device, including detection sintering furnace caused by material reaction The wasted nickel catalyst instrument of waste gas content, the wasted nickel catalyst instrument are connect by auxiliary exhaust threeway with waste discharge feed channel, the auxiliary Blow-off tee is also connect with the compressed air pipe for providing compressed air, by advancing on compressed air pipe according to compressed air Direction be successively arranged electric control valve and control valve, the wasted nickel catalyst instrument is passed to by data connecting line output signal Electric control valve on oxygen channel and the electric control valve on compressed air pipe, the auxiliary exhaust threeway packet Include the branch pipe of connection wasted nickel catalyst instrument, the supervisor of compressed air pipe and connection waste discharge feed channel, the connection waste discharge feed channel Branch pipe and the angle of supervisor of compressed air pipe be 15-30 degree, the branch pipe extends internally.
CN201711471766.8A 2017-12-29 2017-12-29 It is a kind of can be in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen Active CN108168307B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110836608A (en) * 2018-08-15 2020-02-25 杉杉能源(宁夏)有限公司 High-nickel ternary cathode material kiln sintering tail gas recycling system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203478933U (en) * 2013-06-04 2014-03-12 彭武星 Drum type roasting device performing roasting on minerals or slags
CN104777189A (en) * 2015-03-19 2015-07-15 中国石油化工股份有限公司 Oxygen-enriched combustion experiment evaluation device
CN204731220U (en) * 2015-05-04 2015-10-28 李琴琴 There is the sample gas analytic system structure of drip catcher and sample collection apparatus
CN206739906U (en) * 2017-04-12 2017-12-12 广州广钢新能源科技有限公司 A kind of oxygen recovery for sintering nickelic ternary material kiln utilizes device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203478933U (en) * 2013-06-04 2014-03-12 彭武星 Drum type roasting device performing roasting on minerals or slags
CN104777189A (en) * 2015-03-19 2015-07-15 中国石油化工股份有限公司 Oxygen-enriched combustion experiment evaluation device
CN204731220U (en) * 2015-05-04 2015-10-28 李琴琴 There is the sample gas analytic system structure of drip catcher and sample collection apparatus
CN206739906U (en) * 2017-04-12 2017-12-12 广州广钢新能源科技有限公司 A kind of oxygen recovery for sintering nickelic ternary material kiln utilizes device

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