CN105890373A - Material heat recycling system for atmosphere sintering furnace - Google Patents
Material heat recycling system for atmosphere sintering furnace Download PDFInfo
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- CN105890373A CN105890373A CN201410737165.7A CN201410737165A CN105890373A CN 105890373 A CN105890373 A CN 105890373A CN 201410737165 A CN201410737165 A CN 201410737165A CN 105890373 A CN105890373 A CN 105890373A
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- cooling section
- water
- gas
- cooling
- sintering furnace
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a material heat recycling system for an atmosphere sintering furnace. The material heat recycling system comprises a cooling section which is connected with the sintering furnace; a cooling water jacket is arranged outside the cooling section; the cooling water jacket is provided with a water inlet and a water outlet; the material heat recycling system is characterized in that the cooling section comprises a gas cooling section and a water cooling section; the gas cooling section is positioned in front of the water cooling section; a coil pipe is coiled outside the gas cooling section and is provided with a gas inlet and a gas outlet for a sintering protective gas; the gas inlet is positioned in a low-temperature region of the gas cooling section; the gas outlet is positioned in a high-temperature region of the gas cooling section and is communicated with the inside of the sintering furnace; the cooling water jacket is arranged outside the water cooling section. According to the system, a sintered material is firstly cooled by gas and subsequently cooled by water; nitrogen is heated when the material is cooled, so the quantity of used cooling water is reduced, and the aims of cooling the material and heating the gas are also realized.
Description
Technical field
Present invention relates particularly to a kind of heat utilization system, in the high temperature solid state reaction particularly to a kind of LiFePO 4, right
After sintering, the heat of material carries out the system recycled.
Background technology
LiFePO 4, chemical formula is LiFePO4, it is called for short LFP, for the positive electrode material of lithium battery the most newly developed,
It is mainly used in dynamic lithium battery, uses as positive active material, people's custom also referred to as LiFePO4.With traditional lithium
Ion secondary battery positive electrode, the LiMn of spinel structure2O4LiCoO with layer structure2Compare, LiMPO4The original
Material source is more extensive, price is less expensive and non-environmental-pollution.
Present stage, the preparation method of LiFePO 4 is generally used high temperature solid-state method, is i.e. sintered raw material producing phosphoric acid
Ferrous lithium.When high temperature solid-state method synthesizing lithium ferrous phosphate, need material is warming up to 700-800 DEG C of reaction, be passed through simultaneously
High pure nitrogen protection sintering process, needs the way with chuck circulating chilled water that material is cooled to room temperature, cools down water after terminating
Entering cooling tower cooling after heat exchange, by substantial amounts of hot type toward air, cause the loss of heat, the room temperature being simultaneously passed through is high-purity
Nitrogen is heated also can take away substantial amounts of heat.
Summary of the invention
The present invention provides a kind of atmosphere sintering furnace material heat recycling system, it is therefore an objective to solve prior art problem, it is provided that
One can while material is cooled down, to material with the system that recycles of amount of heat, well subtract
Lack the loss of heat, the heat reclaimed has been re-used simultaneously, decrease the waste of other energy.
The present invention solves problem and the technical scheme is that
Atmosphere sintering furnace material heat recycling system, including the cooling section linked together with sintering furnace, cooling section peripheral hardware
Having cooling water jecket, cooling water jecket to be provided with water inlet and outlet, described cooling section includes air cooling section and water-cooled section, gas
Before cold section is placed in water-cooled section；Being wound with coil pipe in air cooling section outer disk, coil pipe has air inlet and the gas outlet of sintering protection gas,
Air inlet is positioned at air cooling section low-temperature space, and gas outlet is positioned at air cooling section high-temperature region and communicates with inside sintering furnace；Water-cooled section peripheral hardware
There is cooling water jecket.
Described coil pipe divides three layers of interlaced arrangement, and adjacent tubes spacing is 2mm.
Described coil pipe caliber is DN25*3mm, long 4500mm.
Beneficial effects of the present invention: the heat recycling system of the present invention includes two cooling steps: air cooling and water-cooled.
Owing to first the material after sintering to be carried out air cooling, therefore again protection gas is heated while material is lowered the temperature, make guarantor
Protect gas need not individually heat can enter sintering furnace in carry out atmosphere protection, saved electric energy.And protection gas introduces from low-temperature space
To high-temperature region, have employed the mode of counterflow heat transfer, its heat exchange efficiency is greater than recuperation, can make fixing heat exchange area
Under the heat that displaces increase.Carrying out another benefit of water-cooled after advanced circulation of qi promoting is cold when being by water-cooled, the temperature of material is
Through being substantially reduced, therefore can reduce the use of the water yield in Cooling Process, the water resource of saving.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention
In figure: 1. cooling section, 2. air cooling section, 3. water-cooled section, 4. coil pipe, 5. air inlet, 6. gas outlet, the coldest
But water leg, 8. water inlet, 9. outlet.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
For solving the problems of the prior art, the present invention uses the nitrogen being first passed through atmosphere sintering furnace to carry out the material after sintering
Cooling carries out the method cooled down again by water-cooled, heats nitrogen while cooling material, reduces the consumption of cooling water simultaneously
Reaching material cooling, the purpose of gas heating, the concrete structure of its system is as described below.
Atmosphere sintering furnace material heat recycling system as shown in Figure 1, including cold with what sintering furnace linked together
But section 1, cooling section 1 includes air cooling section 2 and water-cooled section 3, before air cooling section 2 is placed in water-cooled section 3.In air cooling section 2
Outer disk is wound with coil pipe 4, and coil pipe 5 has air inlet 5 and the gas outlet 6 of protection gas, and it is low that air inlet 5 is positioned at air cooling section 2
Warm area, gas outlet 6 is positioned at air cooling section 2 high-temperature region and communicates with inside sintering furnace.Water-cooled section 3 is externally provided with cooling water folder
Set 7, cooling water jecket 7 is provided with water inlet 8 and outlet 9.
For the heat transfer effect making water-cooled section have, 4 points of three layers of interlaced arrangement of described coil pipe, adjacent tubes spacing is 2mm.
Described coil pipe 4 caliber is DN25*3mm, long 4500mm.
To when after sintering, material cools down, material passes sequentially through air cooling section 2 and the water-cooled section 3 of cooling section 1 with conveyer belt,
High pure nitrogen as protection gas enters coil pipe 4 from the air inlet 5 being positioned at air cooling section low-temperature space, and the heat of material passes through
Coil pipe 4 is conducted to nitrogen, carries out heat exchange.Along with nitrogen moves to the direction, gas outlet 6 being positioned at air cooling section high-temperature region,
The temperature of nitrogen raises.Owing to gas outlet 6 communicates with inside sintering furnace, the nitrogen after intensification is right in being directly entered sintering furnace
It carries out atmosphere protection.Owing to nitrogen absorbs heat from the material after sintering, therefore can the most separately nitrogen be entered
Row is heated, and has saved electric energy.
After air cooling section 2, material enters water-cooled section 3, continues through cooling water material and cools down.Due to material warp
After crossing air cooling section 2, its temperature has been substantially reduced, and therefore can reduce the use of the water yield in Cooling Process, the water of saving
Resource.
Check through practical operation, with simple chuck water-cooling pattern cooling material to room temperature,
Lose heat 237000kJ/d every day, reclaim thermal device by installing air cooling additional, reclaim heat 180000kJ/d, return
Yield 76%, is equivalent to economize on electricity 50 degree every day.
Claims (3)
1. atmosphere sintering furnace material heat recycling system, including the cooling section linked together with sintering furnace, cooling section is externally provided with
Cooling water jecket, cooling water jecket is provided with water inlet and outlet, it is characterised in that: described cooling section includes air cooling section
With water-cooled section, before air cooling section is placed in water-cooled section；Being wound with coil pipe in air cooling section outer disk, coil pipe has the air inlet of sintering protection gas
Mouth and gas outlet, air inlet is positioned at air cooling section low-temperature space, and gas outlet is positioned at air cooling section high-temperature region and communicates with inside sintering furnace；
Water-cooled section is externally provided with cooling water jecket.
2. atmosphere sintering furnace material heat recycling system as described in claim 1, it is characterised in that: described coil pipe divides
Three layers of interlaced arrangement, adjacent tubes spacing is 2mm.
3. the atmosphere sintering furnace material heat recycling system as described in claim 1 or 2, it is characterised in that: described
Coil pipe caliber is DN25*3mm, long 4500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737165.7A CN105890373A (en) | 2014-12-08 | 2014-12-08 | Material heat recycling system for atmosphere sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737165.7A CN105890373A (en) | 2014-12-08 | 2014-12-08 | Material heat recycling system for atmosphere sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105890373A true CN105890373A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410737165.7A Pending CN105890373A (en) | 2014-12-08 | 2014-12-08 | Material heat recycling system for atmosphere sintering furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN105890373A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486024A (en) * | 2017-06-22 | 2017-12-19 | 成都易态科技有限公司 | The manufacture method of sintered porous filtration membrane |
| CN108913859A (en) * | 2018-07-03 | 2018-11-30 | 苏州中门子工业炉科技有限公司 | The application of DX atmosphere heat treatment furnace and high temperature alloy steel, high-carbon steel heat treatment |
| CN109506458A (en) * | 2018-12-13 | 2019-03-22 | 福州启瀚新能源有限公司 | Energy circulation sintering furnace and LiFePO4 process units |
-
2014
- 2014-12-08 CN CN201410737165.7A patent/CN105890373A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486024A (en) * | 2017-06-22 | 2017-12-19 | 成都易态科技有限公司 | The manufacture method of sintered porous filtration membrane |
| CN108913859A (en) * | 2018-07-03 | 2018-11-30 | 苏州中门子工业炉科技有限公司 | The application of DX atmosphere heat treatment furnace and high temperature alloy steel, high-carbon steel heat treatment |
| CN108913859B (en) * | 2018-07-03 | 2023-11-28 | 苏州中门子工业炉科技有限公司 | DX atmosphere heat treatment furnace and application of high isothermal alloy steel and high carbon steel heat treatment |
| CN109506458A (en) * | 2018-12-13 | 2019-03-22 | 福州启瀚新能源有限公司 | Energy circulation sintering furnace and LiFePO4 process units |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |