CN113340098A - Gas heating roller kiln for producing lithium battery material - Google Patents

Gas heating roller kiln for producing lithium battery material Download PDF

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Publication number
CN113340098A
CN113340098A CN202110681868.2A CN202110681868A CN113340098A CN 113340098 A CN113340098 A CN 113340098A CN 202110681868 A CN202110681868 A CN 202110681868A CN 113340098 A CN113340098 A CN 113340098A
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CN
China
Prior art keywords
gas
kiln
burner
section
pipeline
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
CN202110681868.2A
Other languages
Chinese (zh)
Inventor
余阳春
余新焕
陈雄军
郑绪海
杨健
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.)
Huanggang Huayao Zhongzhou Kiln Co ltd
Original Assignee
Huanggang Huayao Zhongzhou Kiln 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 Huanggang Huayao Zhongzhou Kiln Co ltd filed Critical Huanggang Huayao Zhongzhou Kiln Co ltd
Priority to CN202110681868.2A priority Critical patent/CN113340098A/en
Publication of CN113340098A publication Critical patent/CN113340098A/en
Pending legal-status Critical Current

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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
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/028—Multi-chamber type furnaces
    • 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
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/068—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by radiant tubes, the tube being heated by a hot medium, e.g. hot gases
    • 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
    • F27B9/36—Arrangements of heating devices
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Details (AREA)

Abstract

The invention discloses a gas heating roller kiln for producing lithium battery materials, which solves the problem that the consumption cost of electric heating raw materials is high compared with the production and operation cost of enterprises in the prior art, and is characterized in that: the kiln body (1) is divided into a temperature rising section, a heat preservation section, a slow cooling section and a cooling section, a gas heating system is arranged on the temperature rising section and the heat preservation section of the kiln body (1), burners are staggered from top to bottom and symmetrically distributed at multiple points, multi-zone pulse time sequence control is adopted, and a roller rod (3) is sealed by a sealing box (24); the slow cooling section and the cooling section of the kiln body (1) are provided with a water cooling device (10) and an air cooling pipeline (25), the protective gas replacement chambers (2) are arranged at two ends of the kiln, and the protective gas pipeline (7) arranged below the kiln body (1) is fed into the hearth and the transmission sealing cover. Has the advantages of reasonable structure, simple control, stable atmosphere, energy conservation and the like, and has very wide market prospect.

Description

Gas heating roller kiln for producing lithium battery material
Technical Field
The invention belongs to the field of thermal production equipment for producing lithium ion battery materials, and particularly relates to a gas heating roller kiln for producing lithium ion battery materials.
Background
With the vigorous development of the new energy automobile industry, the accumulated loading capacity of the power battery in China in 2020 is 63.6GWH, and the accumulated loading capacity of the power battery in the same proportion is increased by 2.3%; the goods output of the power battery is 80GWH, the quantity is increased by 13 percent on the same scale, the scale of the lithium battery industry in China exceeds 1800 billion yuan in recent years, and the lithium battery has great market demand. As main equipment for producing lithium ion battery materials, electric heating atmosphere protection push plate type, roller way type and tunnel type kilns are generally adopted, and the problems that the consumption cost of electric heating raw materials is high relative to the production and operation cost of enterprises generally exist.
Disclosure of Invention
The invention aims to provide a radiant tube flame-isolation heating gas roller kiln which can ensure a product firing system, ensure the product qualification rate and reduce unit energy consumption.
The technical scheme of the invention is as follows: it includes kiln body and protective gas replacement room, mechanical transmission and automatic control device etc, the kiln body divide into the section of rising the temperature, the heat preservation section, the slow cooling section, the cooling zone, arrange gas heating system in the section of rising the temperature and the heat preservation section of kiln body, adopt self to preheat injection formula radiant tube combustor as burner, the combustor adopts and arranges crisscross from top to bottom, multiple spot symmetry equipartition, divide the multi-region pulse time sequence control, set up at the kiln top and discharge fume and take out the pipeline and waste discharge and take out the pipeline, and set up a stirring fan at every section kiln top, the roller rod adopts the seal box sealed, both sides spill seal box part and adopt flange seal. The slow cooling section and the cooling section of the kiln body are provided with a water cooling device and an air cooling pipeline, the protective gas replacement chamber is arranged at the inlet and the outlet of the kiln, and the protective gas replacement chamber is sent into the hearth and the transmission sealing cover through the protective gas pipeline and the protective gas branch pipe arranged below the kiln body.
Furthermore, the gas heating system is composed of burners, combustion-supporting air feeding pipelines and gas feeding pipelines, two burners are arranged in each section of the kiln, one burner is arranged above the roller in the hearth, the other burner is arranged below the roller, the two burners are vertically staggered and are respectively arranged on two sides of the kiln wall, and the burners in the kiln are subjected to multi-zone pulse time sequence control. The combustion-supporting air feeding pipeline is arranged below two sides of the furnace body and is connected with a combustion-supporting air port of the burner through a combustion-supporting air branch pipe, and the fuel gas feeding pipeline is arranged above two sides of the furnace body and is connected with a fuel gas port of the combustion gas through a fuel gas branch pipe.
The burner is composed of a self-preheating injection type radiant tube burner, a burner radiant tube, a burner control box, an air hose, an air regulating valve, an air solenoid valve, a gas hose, a gas fine adjustment valve, a gas solenoid valve, a gas shutoff valve, a flame guide tube and an injector, wherein the burner radiant tube is connected with the self-preheating injection type radiant tube burner, the flame guide tube is arranged in the burner radiant tube, a ceramic heat exchanger is arranged in the burner, the injector is arranged on one side of the self-preheating injection type radiant tube burner, a gas pipe orifice of the self-preheating injection type radiant tube burner is connected with a gas feeding pipeline through the gas hose, the gas fine adjustment valve, the gas solenoid valve and the gas shutoff valve, a combustion-supporting air pipe orifice is connected with a combustion-supporting air feeding pipeline through the air hose, the air regulating valve and the air solenoid valve, and is automatically controlled through the burner control box. The self-preheating injection type radiant tube burner is a low-power burner with the power of 10-40 KW.
Furthermore, the water cooling device adopts indirect cooling and coil pipe water-through cooling modes; and the air cooling pipeline is introduced into the interlayer of the kiln body furnace shell to cool the inner wall of the furnace.
Furthermore, the protective gas replacement chamber adopts the design of many gates, and the independent design has special air inlet unit to be connected with the protective gas pipeline that kiln body below set up, ensures that it is sealed to advance out of the kiln.
The invention has the beneficial effects that: because natural gas, coal gas and the like are used as heating fuels of the kiln, the self-preheating injection type radiant tube burner is used as a combustion device for flame-proof heating. The burner burns flame in the radiant tube, the flame is sprayed out along the inner core of the burner flame guide tube, the flame is sucked into the burner injection smoke outlet along the outer wall of the flame guide tube, the radiant tube is heated, the temperature in the furnace is raised, and the combustion heat is brought into the furnace through the radiation of the radiant tube. A gas pipeline in front of the nozzle is provided with a gas hose, a gas fine adjustment valve, a gas electromagnetic valve and a gas shutoff valve; the combustion-supporting pipeline is provided with an air hose, an air regulating valve and an air electromagnetic valve, automatic control is carried out through a burner control box, the requirement of a heating section of the kiln can be met by adopting a pulse type combustion control technology, a ceramic heat exchanger and a matched ejector are arranged in a self-preheating burner, the highest heat exchange efficiency and the best resistance can be obtained, and a direct electrode ignition and flame detection mode is adopted; can meet various harsh atmosphere requirements in the furnace.
The invention is further illustrated by the following structural drawings.
Drawings
FIG. 1 is a schematic overall front view of the present invention;
FIG. 2 is a schematic cross-sectional view of the heating and insulating section of the present invention;
FIG. 3 is a schematic cross-sectional view of the slow cooling and cooling sections of the present invention;
FIG. 4 is a schematic front view of the burner of the present invention;
FIG. 5 is a schematic left-side view of the burner of the present invention.
In the figure, 1 is a kiln body, 2 is a protective gas replacement chamber, 4 is a roller rod, 4 is a self-preheating injection type radiant tube burner, 5 is a combustion-supporting air feeding pipeline, 6 is a fuel gas feeding pipeline, 7 is a protective gas pipeline, 8 is a smoke exhaust pipeline, 9 is a waste exhaust pipeline, 10 is a water cooling device, 11 is a burner radiant tube, 12 is a burner control box, 13 is an air hose, 14 is an air regulating valve, 15 is an air electromagnetic valve, 16 is a fuel gas hose, 17 is a fuel gas fine adjustment valve, 18 is a fuel gas electromagnetic valve, 19 is a fuel gas shutoff valve, 20 is a flame guide pipe, 21 is an injector, 22 is a stirring fan, 23 is a sagger, 24 is a seal box, 25 is an air cooling pipeline, 26 is a bottom protective gas branch pipe, and 27 is an upper protective gas branch pipe.
Detailed Description
As shown in the figure, a gas heating roller kilns for producing lithium electricity material comprises kiln body 1 and protective gas replacement room 2 and automatic control system, kiln body 1 divide into the section of rising the temperature, the heat preservation section, the slow cooling section, the cooling zone, arrange gas heating system at the section of rising the temperature and the heat preservation section of kiln body 1, adopt self to preheat injection type radiant tube combustor as burner, the combustor adopts row from top to bottom crisscross, multiple spot symmetry equipartition, divide multi-region pulse time sequence control, set up at the kiln top and discharge fume and take out pipeline 8 and arrange useless pipeline 9 of taking out, and set up a stirring fan 22 at every section kiln top, the roller stick 3 adopts the seal box sealed, both sides spill seal box part and adopt flange seal. The gas heating system is composed of burners, a combustion-supporting air feeding pipeline 5 and a gas feeding pipeline 6, two burners are arranged in each section of kiln, one burner is arranged above a roller 3 in a hearth, the other burner is arranged below the roller 3, the two burners are staggered up and down and are respectively arranged on two sides of a kiln wall, and the burners in the kiln are subjected to multi-zone pulse time sequence control; the combustion-supporting air feeding pipeline 5 is arranged below two sides of the furnace body and is connected with a combustion-supporting air port of the burner through a combustion-supporting air branch pipe, and the fuel gas feeding pipeline 6 is arranged above two sides of the furnace body and is connected with a fuel gas port of the burner through a fuel gas branch pipe. The burner is composed of a self-preheating injection type radiant tube burner 4, a burner radiant tube 11, a burner control box 12, an air hose 13, an air regulating valve 14, an air electromagnetic valve 15, a gas hose 16, a gas fine adjustment valve 17, a gas electromagnetic valve 18, a gas shutoff valve 19, a flame guide pipe 20 and an injector 21, wherein the burner radiant tube 11 is connected with the self-preheating injection type radiant tube burner 4, the flame guide pipe 20 is arranged in the burner radiant tube 11, a ceramic heat exchanger is arranged in the burner, the injector 21 is arranged at one side of the self-preheating injection type radiant tube burner 4, a gas pipe orifice of the self-preheating injection type radiant tube burner 4 is connected with a gas feeding pipeline 6 through the gas hose 16, the gas fine adjustment valve 17, the gas electromagnetic valve 18 and the gas shutoff valve 19, a combustion-supporting air pipe orifice is connected with a combustion-supporting air feeding pipeline 5 through the air hose 13, the air regulating valve 14 and the air electromagnetic valve 15, the automatic control is performed by the burner control box 12. The self-preheating injection type radiant tube burner 4 adopts a low-power burner, and the power is about 10-40KW according to the loading yield and the production rhythm. A water cooling device 10 and an air cooling pipeline 25 are arranged on a slow cooling section and a cooling section of the kiln body 1, and the water cooling device 10 adopts indirect cooling and coil pipe water-feeding cooling modes; and the air cooling pipeline is introduced into the interlayer of the kiln body furnace shell to cool the inner wall of the furnace. The protective gas replacement chambers 2 are arranged at the inlet and outlet ends of the kiln, the design of a plurality of gates is adopted, and a special gas inlet device is separately designed to be connected with a protective gas pipeline 7 arranged below the kiln body 1, so that the sealing of the kiln is ensured. When the invention is implemented, the kiln body 1 adopts a high-quality steel frame, and refractory heat-insulating materials are built in sections according to different temperatures; the protective gas replacement chamber 2 adopts a multi-gate design, and is separately provided with a special gas inlet device which is connected with the front and rear gas inlet devices of the kiln body 1, so that the sealing of the kiln inlet and outlet is ensured; according to the temperature, the roller rod 3 adopts a high-alumina reaction sintered silicon carbide roller rod, the bevel gear sectional transmission is adopted, the roller rod is sealed by a sealing box, the part of the roller rod leaking out of the sealing box at two sides is sealed by a flange, and protective gas is introduced to ensure the sealing; a sagger 23 is arranged above the roller rod 3; self-preheating radiant tube burners 4 are distributed up and down on a roller rod 3 of a heating zone and a heat preservation zone, a low-power burner is adopted for arrangement and model selection, the power is about 10-40KW according to the loading yield and the production rhythm, the upper row and the lower row are staggered, and the multiple points are symmetrically and uniformly distributed; the roller kiln heating system also comprises a combustion-supporting pipeline system 5, a smoke exhaust pipeline system 6 and a gas pipeline system 8; the kiln body 1 sets up logical protective gas and lets in device 7 at rising temperature area, heat preservation area kiln bottom and side wall goods upside, and toward kiln interior supplementary protective gas, ensures the interior atmosphere of kiln, and the kiln top sets up logical exhaust pipe 7, and the exhaust heating process waste gas and the supplementary protective gas that the goods volatilize guarantee the pressure balance in the kiln. The cooling zone of the kiln body 1 is provided with a water cooling system 10 and an air cooling pipeline 25 which adopt indirect cooling; the water cooling coil is cooled by water, the inside of the water cooling coil is cooled by water, and a water inlet belt temperature and flow detection device is arranged; the air cooling pipeline is introduced into the kiln body furnace shell interlayer to cool the inner wall of the furnace; a stirring fan 22 is installed at each section of the top of the kiln body 1 to stir the air flow in the kiln, so that the temperature difference in the kiln is reduced. Because natural gas, coal gas and the like are used as heating fuels of the kiln, the self-preheating injection type radiant tube burner is used as a combustion device for flame-proof heating. As shown in figure 3, the burner burns flame in the radiant tube 11, the flame is sprayed out along the inner core of the burner flame guide tube, the flame is sucked into the burner injection smoke outlet along the outer wall of the flame guide tube, the radiant tube is heated to heat the furnace, the combustion heat is brought into the furnace through the radiation of the radiant tube, and the internal flame guide tube 20 is made of silicon carbide. A gas hose 16, a gas fine adjustment valve 17, a gas electromagnetic valve 18 and a gas shutoff valve 19 are arranged on a gas pipeline in front of a nozzle; the combustion-supporting pipeline is provided with an air hose 13, an air regulating valve 14 and an air electromagnetic valve 15; a burner control box 12 is additionally arranged, the requirement of a heating section of the kiln can be met by adopting a pulse combustion type control technology, a ceramic heat exchanger and a matched ejector 21 are arranged in the self-preheating burner, the highest heat exchange efficiency and the best resistance can be obtained, and a direct electrode ignition and flame detection mode is adopted; can meet various harsh atmosphere requirements in the furnace.
The above description is only for the purpose of illustrating the present invention in detail, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims (6)

1. The utility model provides a gas heating roller kilns for producing lithium electricity material, it includes kiln body (1), protection gas replacement room (2), mechanical transmission and automatic control device, its characterized in that: the kiln comprises a kiln body (1), and is characterized in that the kiln body (1) is divided into a temperature rising section, a heat preservation section, a slow cooling section and a cooling section, a gas heating system is arranged in the temperature rising section and the heat preservation section of the kiln body (1), a self-preheating injection type radiant tube burner is used as a combustion device, the burner is staggered in an upper row and a lower row and symmetrically distributed in multiple points, multi-region pulse time sequence control is adopted, a smoke exhaust pipeline (8) and a waste exhaust pipeline (9) are arranged on the top of the kiln, a stirring fan (22) is arranged on the top of each section of the kiln, a roller rod (3) is sealed by a sealing box, and the sealing box parts leaking from two sides are sealed by flanges; the slow cooling section and the cooling section of the kiln body (1) are provided with a water cooling device (10) and an air cooling pipeline (25), the protective gas replacement chamber (2) is arranged at the inlet and the outlet of the kiln, and the protective gas pipeline (7) and the bottom protective gas branch pipe (26) which are arranged below the kiln body (1) and the upper protective gas branch pipe (27) are sent into the hearth and the transmission sealing cover.
2. The gas-fired roller kiln for producing lithium battery materials according to claim 1, characterized in that: the gas heating system is composed of burners, a combustion-supporting air feeding pipeline (5) and a gas feeding pipeline (6), two burners are arranged in each section of kiln, one burner is arranged above a roller (3) in a hearth, the other burner is arranged below the roller (3), the two burners are vertically staggered and are respectively arranged on two sides of a kiln wall, and the burners in the kiln are subjected to multi-zone pulse time sequence control; the combustion-supporting air feeding pipeline (5) is arranged below two sides of the furnace body and is connected with a combustion-supporting air port of the burner through a combustion-supporting air branch pipe, and the fuel gas feeding pipeline (6) is arranged above two sides of the furnace body and is connected with a fuel gas port of the burner through a fuel gas branch pipe.
3. The gas-fired roller kiln for the production of lithium electrical materials according to claim 1 or 2, characterized in that: the burner is composed of a self-preheating injection type radiant tube burner (4), a burner radiant tube (11), a burner control box (12), an air hose (13), an air regulating valve (14), an air electromagnetic valve (15), a gas hose (16), a gas fine adjustment valve (17), a gas electromagnetic valve (18), a gas shutoff valve (19), a flame guide pipe (20) and an injector (21), wherein the burner radiant tube (11) is connected with the self-preheating injection type radiant tube burner (4), the flame guide pipe (20) is arranged in the burner radiant tube (11), the burner is internally provided with a ceramic heat exchanger, the injector (21) is arranged on one side of the self-preheating injection type radiant tube burner (4), and a gas pipe orifice of the self-preheating injection type radiant tube burner (4) is connected with a gas feeding pipeline (6) through the gas hose (16), the gas fine adjustment valve (17), the gas electromagnetic valve (18) and the gas shutoff valve (19), the mouth of the combustion-supporting air pipe is connected with a combustion-supporting air feeding pipeline (5) through an air hose (13), an air regulating valve (14) and an air electromagnetic valve (15), and is automatically controlled through a burner control box (12).
4. The gas-fired roller kiln for producing lithium battery material according to claim 3, characterized in that: the self-preheating injection type radiant tube burner (4) is a burner with 10-40KW low power.
5. The gas-fired roller kiln for producing lithium battery material according to claim 4, characterized in that: the water cooling device (10) adopts indirect cooling and coil pipe water-feeding cooling modes; an air cooling pipeline (25) is introduced into the interlayer of the kiln body and the shell of the kiln body to cool the shell wall of the kiln body.
6. The gas-fired roller kiln for producing lithium battery material according to claim 5, characterized in that: the protective gas replacement chamber (2) adopts a multi-gate design, and a special gas inlet device is independently designed to be connected with a protective gas pipeline (7) arranged on the kiln body (1) so as to ensure the sealing of the kiln.
CN202110681868.2A 2021-06-19 2021-06-19 Gas heating roller kiln for producing lithium battery material Pending CN113340098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110681868.2A CN113340098A (en) 2021-06-19 2021-06-19 Gas heating roller kiln for producing lithium battery material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110681868.2A CN113340098A (en) 2021-06-19 2021-06-19 Gas heating roller kiln for producing lithium battery material

Publications (1)

Publication Number Publication Date
CN113340098A true CN113340098A (en) 2021-09-03

Family

ID=77477446

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110681868.2A Pending CN113340098A (en) 2021-06-19 2021-06-19 Gas heating roller kiln for producing lithium battery material

Country Status (1)

Country Link
CN (1) CN113340098A (en)

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