CN107720745A - Graphite cathode material heat-treatment furnace cooling system and cooling means - Google Patents

Graphite cathode material heat-treatment furnace cooling system and cooling means Download PDF

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Publication number
CN107720745A
CN107720745A CN201710792703.6A CN201710792703A CN107720745A CN 107720745 A CN107720745 A CN 107720745A CN 201710792703 A CN201710792703 A CN 201710792703A CN 107720745 A CN107720745 A CN 107720745A
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CN
China
Prior art keywords
cooling
furnace
cathode material
graphite cathode
water
Prior art date
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.)
Pending
Application number
CN201710792703.6A
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Chinese (zh)
Inventor
王杰
孙毅
杨正宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Yicheng New Energy Co ltd
Original Assignee
Henan Yicheng New Energy Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Yicheng New Energy Co ltd filed Critical Henan Yicheng New Energy Co ltd
Priority to CN201710792703.6A priority Critical patent/CN107720745A/en
Publication of CN107720745A publication Critical patent/CN107720745A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F27D9/00Cooling of furnaces or of charges therein
    • 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
    • F27D9/00Cooling of furnaces or of charges therein
    • F27D2009/007Cooling of charges therein
    • F27D2009/0072Cooling of charges therein the cooling medium being a gas
    • F27D2009/0075Cooling of charges therein the cooling medium being a gas in direct contact with the charge
    • 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
    • F27D9/00Cooling of furnaces or of charges therein
    • F27D2009/007Cooling of charges therein
    • F27D2009/0081Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
    • F27D2009/0083Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water
    • F27D2009/0086Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water applied in spray form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27MINDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2001/00Composition, conformation or state of the charge
    • F27M2001/04Carbon-containing material

Abstract

The invention discloses a kind of graphite cathode material heat-treatment furnace cooling system and cooling means, it is intended to solve the problems, such as existing graphite cathode material Cooling Method After Heat-treatment exist security and stability is poor, cooling is insufficient, cool time is long, cooling effectiveness is low, influence product quality.The graphite cathode material heat-treatment furnace cooling system synthesis of the present invention cools down four kinds of types of cooling and cooling technology using air-cooled, recirculated water cooling, spray water cooling and pressure release, material cools down in the privileged sites such as the axle sleeve of Furnace door frame, furnace roof safety valve, stove tail baffle valve, centrifugal blower to graphite cathode material heat-treatment furnace and stove, meet needs of the graphite cathode material thermal treatment production process control condition to cooling down, with the characteristics of rapid, timely, safe efficient is cooled down, product quality has been ensured.This method strong operability, it is highly suitable for the popularization and application of graphite cathode material manufacturing enterprise.

Description

Graphite cathode material heat-treatment furnace cooling system and cooling means
Technical field
The present invention relates to graphite cathode material production technical field, and in particular to a kind of graphite cathode material heat-treatment furnace is cold But system and cooling means.
Background technology
Mainly the negative material by the use of graphite microparticles as its conductive negative pole, its granularity are generally situated between lithium rechargeable battery at present In 3 μm~30 μm.Graphite cathode material is needed pretreated raw material at 500~1000 DEG C during preparation is produced It is heat-treated in heat-treatment furnace, raw material is obtained charing process and remove the volatile matter in raw material and moisture.The process is in heat Carried out in treatment furnace, generally using natural gas or water-gas as combustion medium, make raw material in heat-treatment furnace in certain temperature The process control conditions such as curve, time graph and pressure curve, the mode for carrying out long-time roasting are carried out, and in this process, are needed A series of strict necessary cooling treatments are carried out to heat-treatment furnace, to ensure the normal safe operation of heat-treatment furnace and fill Divide and meet requirement of the controlling of production process condition to in-furnace temperature, temperature control time and temperaturing control pressure etc., it is existing common to avoid The problem of security and stability existing for the type of cooling is poor, cooling is insufficient, cool time is long, cooling effectiveness is low, these problems are held It is easily caused graphite cathode material and phenomena such as charing is insufficient, volatile matter and moisture removal be not thorough, shadow occurs in heat treatment process Ring product quality.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of graphite cathode material heat-treatment furnace cooling system, and this is System cools down in heat treatment to material in heat-treatment furnace and its stove, to ensure the progress of heat treatment and meet production technology Requirement of the control condition to cooling down, avoid the occurrence of carbonize insufficient, volatile matter and moisture removal it is not thorough etc. influence it is follow-up The problem of product quality.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:
Design a kind of graphite cathode material heat-treatment furnace cooling system, including air cooling equipment, water-circulating cooling device, shower water cold charge Put and release cooling device;Air cooling equipment includes furnace roof centrifugal blower;Water-circulating cooling device includes tank, Furnace door frame circulates Cooling water mechanism, furnace roof safety valve recirculated cooling water mechanism, stove tail baffle valve recirculated cooling water mechanism and centrifugal blower axle sleeve follow Ring cooling water mechanism;Spraying water cooling plant includes micropore shower nozzle, jet pipe, telescoping cylinder and spray control valve;Release cooling device bag Include furnace pressure sensor.
Preferably, spray water cooling plant is connected with tank pipeline;Furnace pressure sensor joins with the stove tail baffle valve Dynamic control.
Preferably, furnace roof centrifugal blower is high temperature resistant centrifugal blower, is uniformly distributed at the front portion of furnace roof, middle part, rear portion.
Preferably, lubricating grease used in the bearing of furnace roof centrifugal blower is lithium base high temperature ointment lubricating grease.
Preferably, furnace roof centrifugal blower air quantity control is 500 ~ 1000m3/h。
Preferably, Furnace door frame recirculated cooling water mechanism position hollow sealing structure, its material are stainless steel 304;
Preferably, in water-circulating cooling device cooling water water temperature≤30 DEG C, hardness≤6DH, electrical conductivity is≤5 μ S/cm.
Preferably, furnace pressure sensor and stove tail baffle valve coordinated signals, coordinated signals use PID control;Stove tail is kept off The aperture of plate valve controls to adjust the size of furnace pressure.
Preferably, there is air bleeding valve at the top of Furnace door frame recirculated cooling water mechanism, when producing vapour lock in Furnace door frame to inframe Flow of cooling water causes to open when hindering, and to discharge the gas in Furnace door frame, eliminates vapour lock.
A kind of cooling means of graphite cathode material heat-treatment furnace cooling system is designed, is comprised the following steps:
(1)Start air cooling equipment during cooling down after graphite cathode material heat treatment in stove, furnace roof centrifugal blower uses frequency conversion The outside air cold wind blasted into stove is controlled, material in stove is cooled down;
(2)Water-circulating cooling device cools down to the privileged site of heat-treatment furnace, and the cooling water current continuously circulated are cold to needing But position is cooled down;
(3)Spray water cooling plant to be opened, starts spray control valve, telescoping cylinder is stretched into micropore shower nozzle and jet pipe in stove by furnace roof, The cooling water of atomization is sprayed into stove from micropore shower nozzle, uniform spraying cooling is carried out to material in stove;
(4)As in-furnace temperature rise starts the release cooling device, when pressure monitor sensor is excessive to furnace pressure, Stove tail baffle valve can be opened, release regulation is carried out to furnace pressure, reduces in-furnace temperature.
The advantageous effects of the present invention are:
1. the present invention cools down in heat treatment to material in heat-treatment furnace and its stove, while ensureing the progress of heat treatment Requirement of the controlling of production process condition to cooling down is met, avoids the occurrence of and carbonizes insufficient, volatile matter and moisture removal not The problem of thoroughly waiting influence successor quality.
2. the present invention is comprehensive to cool down four kinds of types of cooling and cooling skill using air-cooled, recirculated water cooling, spray water cooling and pressure release Art, it is applied in combination on demand, makes cooling rapid, timely, safe efficient on the premise of energy-conserving and environment-protective, ensured product quality.
3. strong operability of the present invention, it is highly suitable for the popularization and application of graphite cathode material manufacturing enterprise.
Embodiment
Illustrate the embodiment of the present invention with reference to embodiment, but following examples are used only to describe in detail The present invention, the scope not limiting the invention in any way.In the examples below involved equipment unless otherwise instructed, It is conventional equipment;Involved industrial materials are commercially available regular industrial material unless otherwise instructed;Involved operation side Method, it is conventional practices unless otherwise instructed.
Embodiment 1:
A kind of graphite cathode material heat-treatment furnace cooling system, including air cooling equipment, water-circulating cooling device, spray water cooling plant and Release cooling device;Air cooling equipment includes furnace roof centrifugal blower;Water-circulating cooling device includes tank, Furnace door frame circulating cooling Water dispenser structure, furnace roof safety valve recirculated cooling water mechanism, stove tail baffle valve recirculated cooling water mechanism and the circulation of centrifugal blower axle sleeve are cold But water dispenser structure;Spraying water cooling plant includes micropore shower nozzle, jet pipe, telescoping cylinder and spray control valve;Release cooling device includes stove Pressure sensor.
Furnace roof centrifugal blower is high temperature resistant centrifugal blower, is uniformly distributed at the front portion of furnace roof, middle part, rear portion.Furnace roof centrifuges Lubricating grease used in the bearing of blower fan is lithium base high temperature ointment lubricating grease.Furnace roof centrifugal blower air quantity is 500~1000m3/h。
Furnace door frame is hollow sealing structure, and its material is stainless steel 304, and air bleeding valve is provided with the top of Furnace door frame, when Having vapour lock to produce in Furnace door frame can open when inframe flow of cooling water is caused and hindered in air bleeding valve discharge Furnace door frame Gas, vapour lock being eliminated, water temperature≤30 DEG C of cooling water, hardness≤6DH of cooling water, the electrical conductivity of cooling water is≤5 μ S/cm, Pressure controller is separately installed with outlet conduit, the water pressure of cooling water in outlet conduit is monitored, cooling tower is glass Steel cooling tower.
Spray the micropore shower nozzle in water cooling plant, the material of jet pipe is Stainless steel 316, and passes through the cold of pipeline and tank But aqueous phase joins.Cooling water after filtering and soften in tank can avoid the fouling of micropore shower nozzle and blocking.On outlet conduit respectively Pressure controller is installed, the water pressure of cooling water in outlet conduit is monitored.
In heat-treatment furnace built with pressure sensor, and make itself and stove tail baffle valve coordinated signals, wherein stove tail baffle valve Aperture it is adjustable, to adjust the size of furnace pressure, coordinated signals use PID control, as in-furnace temperature raises, work as pressure Sensor monitoring to furnace pressure it is excessive when, stove tail baffle valve can be opened, to furnace pressure carry out release regulation, so as to reduce stove Interior temperature.
Embodiment 2:
The cooling means of graphite cathode material heat-treatment furnace cooling system, comprises the following steps in embodiment 1:
(1)Start air cooling equipment during cooling down after graphite cathode material heat treatment in stove, furnace roof centrifugal blower uses frequency conversion The outside air cold wind blasted into stove is controlled, material in stove is cooled down;
(2)Water-circulating cooling device cools down to the privileged site of heat-treatment furnace, and the cooling water current continuously circulated are cold to needing But position is cooled down;
(3)Spray water cooling plant to be opened, starts spray control valve, telescoping cylinder is stretched into micropore shower nozzle and jet pipe in stove by furnace roof, The cooling water of atomization is sprayed into stove from micropore shower nozzle, uniform spraying cooling is carried out to material in stove;
(4)As in-furnace temperature rise starts the release cooling device, when pressure monitor sensor is excessive to furnace pressure, Stove tail baffle valve can be opened, release regulation is carried out to furnace pressure, reduces in-furnace temperature.
Embodiment 3:
Difference from Example 2 is:The cooling water pumped out in water-circulating cooling device by tank is respectively by independent pipe Road is passed through the water inlet of Furnace door frame, the water inlet of furnace roof safety valve, the water inlet of stove tail baffle valve, centrifugal blower axle sleeve and entered The mouth of a river, and flowed out from the delivery port of respective cooling position, flowed into by each independent outlet conduit positioned at the pond of confluxing of stove tail, And cycling hot pond is finally back to by pond of confluxing, the water in cycling hot pond is again after cooling tower cools, then flow into circulation Water cooling pond, the water in circulating water pond flow into tank after the filtering of quartzy silo and water softener sofening treatment again, final warp The cooling water of supercooling, filtering and softening is stored in tank in case cooling down use.
Embodiment 4:
Difference from Example 2 is:Air cooling equipment, water-circulating cooling device, spray water cooling plant and release can be started on demand It is at least one in four kinds of cooling devices of cooling device, to the privileged sites of graphite cathode material heat-treatment furnace(Including fire door door Frame, furnace roof safety valve, stove tail baffle valve, the axle sleeve of centrifugal blower)And material is cooled down in stove, the synthesis fortune when needing cooling With a variety of cooling technologies and the cooling system of the type of cooling, it is ensured that rapidly cooled down, improved in time in heat treatment process Cooling effectiveness, while ensure the safe operation of heat-treatment furnace, meet graphite cathode material thermal treatment production process control condition pair The needs of cooling down, technical guarantee is provided to the pretreated raw material production quality of graphite cathode material.
The present invention is described in detail above in conjunction with embodiment, still, person of ordinary skill in the field can Understand, on the premise of present inventive concept is not departed from, each design parameter in above-described embodiment can also be changed, shape Into multiple specific embodiments, it is common excursion of the invention, is no longer described in detail one by one herein.

Claims (9)

  1. A kind of 1. graphite cathode material heat-treatment furnace cooling system, it is characterised in that including air cooling equipment, water-circulating cooling device, Spray water cooling plant and release cooling device;The air cooling equipment includes furnace roof centrifugal blower;The water-circulating cooling device includes Tank, Furnace door frame recirculated cooling water mechanism, furnace roof safety valve recirculated cooling water mechanism, stove tail baffle valve circulating cooling water dispenser Structure and centrifugal blower axle sleeve recirculated cooling water mechanism;The spray water cooling plant includes micropore shower nozzle, jet pipe, telescoping cylinder and spray Control valve;The release cooling device includes furnace pressure sensor.
  2. 2. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the spray water cooling Device is connected with the tank pipeline;The furnace pressure sensor and the stove tail baffle valve coordinated signals.
  3. 3. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the furnace roof centrifugation Blower fan is high temperature resistant centrifugal blower, is uniformly distributed at the front portion of furnace roof, middle part, rear portion.
  4. 4. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the furnace roof centrifugation Lubricating grease used in the bearing of blower fan is lithium base high temperature ointment lubricating grease.
  5. 5. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the furnace roof centrifugation Fan delivery control is 500~1000m3/h。
  6. 6. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the Furnace door frame Recirculated cooling water mechanism position hollow sealing structure, its material are stainless steel 304;
    Graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the water-circulating cooling Water temperature≤30 DEG C of middle cooling water, hardness≤6DH are put, electrical conductivity is≤5 μ S/cm.
  7. 7. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the furnace pressure Sensor and the stove tail baffle valve coordinated signals, coordinated signals use PID control;The aperture control of the stove tail baffle valve is adjusted Save the size of furnace pressure.
  8. 8. graphite cathode material heat-treatment furnace cooling system according to claim 1, it is characterised in that the Furnace door frame There is air bleeding valve at the top of recirculated cooling water mechanism, opened when producing vapour lock in Furnace door frame and inframe flow of cooling water being caused and hindered Open, to discharge the gas in Furnace door frame, eliminate vapour lock.
  9. 9. a kind of graphite cathode material heat-treatment furnace cooling means, it is characterised in that utilize graphite cathode material described in claim 1 Expect heat-treatment furnace cooling system, comprise the following steps:
    (1)Start the air cooling equipment, the furnace roof centrifugal blower during cooling down after graphite cathode material heat treatment in stove The outside air cold wind blasted using VFC into stove, is cooled down to material in stove;
    (2)The water-circulating cooling device cools down to the privileged site of heat-treatment furnace, and the cooling water current continuously circulated are to needing The position to be cooled down is cooled down;
    (3)The spray water cooling plant is opened, starts the spray control valve, the telescoping cylinder is by the micropore shower nozzle and described Jet pipe is stretched into stove by furnace roof, sprays into the cooling water of atomization into stove from the micropore shower nozzle, material in stove is uniformly sprayed Leaching cooling;
    (4)As in-furnace temperature rise starts the release cooling device, when the pressure monitor sensor to furnace pressure mistake When big, stove tail baffle valve can be opened, release regulation is carried out to furnace pressure, reduces in-furnace temperature.
CN201710792703.6A 2017-09-05 2017-09-05 Graphite cathode material heat-treatment furnace cooling system and cooling means Pending CN107720745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710792703.6A CN107720745A (en) 2017-09-05 2017-09-05 Graphite cathode material heat-treatment furnace cooling system and cooling means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710792703.6A CN107720745A (en) 2017-09-05 2017-09-05 Graphite cathode material heat-treatment furnace cooling system and cooling means

Publications (1)

Publication Number Publication Date
CN107720745A true CN107720745A (en) 2018-02-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113346076A (en) * 2021-05-14 2021-09-03 沁新集团(天津)新能源技术研究院有限公司 Surface modified graphite negative electrode material of lithium ion battery and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203163483U (en) * 2012-11-27 2013-08-28 西安大昱光电科技有限公司 Cooling zone structure of solar cell sintering furnace
CN206073730U (en) * 2016-10-12 2017-04-05 苏州市通润机械铸造有限公司 A kind of cooling system of electric induction furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203163483U (en) * 2012-11-27 2013-08-28 西安大昱光电科技有限公司 Cooling zone structure of solar cell sintering furnace
CN206073730U (en) * 2016-10-12 2017-04-05 苏州市通润机械铸造有限公司 A kind of cooling system of electric induction furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113346076A (en) * 2021-05-14 2021-09-03 沁新集团(天津)新能源技术研究院有限公司 Surface modified graphite negative electrode material of lithium ion battery and preparation method thereof
CN113346076B (en) * 2021-05-14 2023-01-24 沁新集团(天津)新能源技术研究院有限公司 Surface modified graphite negative electrode material of lithium ion battery and preparation method thereof

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Application publication date: 20180223

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