CN216869170U - Heat treatment furnace - Google Patents
Heat treatment furnace Download PDFInfo
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- CN216869170U CN216869170U CN202220186129.6U CN202220186129U CN216869170U CN 216869170 U CN216869170 U CN 216869170U CN 202220186129 U CN202220186129 U CN 202220186129U CN 216869170 U CN216869170 U CN 216869170U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 238000009833 condensation Methods 0.000 claims abstract description 82
- 230000005494 condensation Effects 0.000 claims abstract description 82
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 47
- 239000010439 graphite Substances 0.000 claims abstract description 47
- 238000006722 reduction reaction Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000000498 cooling water Substances 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 28
- 239000000047 product Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000012467 final product Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010574 gas phase reaction Methods 0.000 abstract description 2
- 239000012265 solid product Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 23
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009830 intercalation Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009831 deintercalation Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
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Abstract
The utility model discloses a heat treatment furnace which comprises a heating reaction assembly, a condensation collection assembly and a gas preheating assembly. The heating reaction component comprises a furnace body and a graphite barrel; the furnace body and the graphite cylinder are of a cavity structure with a hollow interior and two closed ends, the graphite cylinder is located in the cavity of the furnace body and used for generating gas products, and the condensation collection assembly is used for controlling the gas products to be rapidly collected within a certain temperature range and condensed to form solid products. A reduction reaction cavity is arranged between the heating reaction component and the condensation collection component. The heat treatment furnace provided by the utility model has a simple structure, can be used for reacting and treating the gaseous product with other gases before the gaseous product is condensed, can effectively utilize the advantages of the temperature and gas phase reaction of the gaseous product, is beneficial to improving the performance of the final product, and can reduce the energy consumption in the whole process.
Description
Technical Field
The utility model relates to the technical field of heat treatment equipment, in particular to a heat treatment furnace.
Background
Silicon is considered to be the most promising candidate for replacing graphite in lithium battery negative electrode materials. It is the second most abundant element in the earth crust, is environment-friendly and has ultrahigh theoretical capacity (4200 mAh/g). However, the silicon negative electrode material undergoes a drastic change in volume during lithium intercalation/deintercalation, resulting in very poor battery cycle stability. Compared with a silicon simple substance, the volume change of the silicon oxide material in the processes of lithium intercalation and lithium deintercalation is smaller, and the silicon oxide material has higher theoretical specific capacity (more than 2000 mAh/g), the capacity of the finished silicon oxide product in the current practice is 1500-plus-1500 mAh/g, the preparation cost is low, and the silicon oxide material can grow into a cathode material with great potential.
However, the silica material generates Li during the process of lithium intercalation2O and Li4SiO4And the like, which leads to the loss of activity of partial Li, so that the first charge-discharge efficiency is lower (less than 70 percent), and the practical application of the lithium ion battery is seriously influenced. The important reason for this phenomenon is that oxygen in the silica is very reactive with Li, so that the reduction of the proportion of oxygen in the silica material is a field of great research and economic value at present.
Various explorations are made in the scientific and industrial circles, wherein two main routes are pre-lithiation and a silicon vapor deposition mode, the conventional methods need subsequent treatment after the preparation of the silicon monoxide is completed, and the whole process has high energy consumption and is not environment-friendly. The prelithiation route is that lithium reacts with silicon monoxide to consume oxygen in the silicon monoxide, the reaction process has excessive pollutants to cause great pollution to the environment, and the raw material lithium source is active, has higher risk and is not easy to store. At present, the route of vapor deposition silicon generally selects silicon monoxide finished product powder, a silicon simple substance can only be deposited on the surface of the silicon monoxide finished product powder, and silicon particles formed by the deposition and the enlargement of the silicon simple substance are easy to crystallize and pulverize at high temperature, particularly pulverization, which can cause rapid cycle attenuation and poor sustainability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a heat treatment furnace to solve the problems in the prior art.
In order to achieve the aim, the technical scheme of the utility model provides a heat treatment furnace, which comprises a heating reaction assembly and a condensation collection assembly; the heating reaction assembly comprises a furnace body and a graphite barrel; the furnace body and the graphite barrel are of a cavity structure with a hollow interior and two closed ends, the graphite barrel is positioned in a cavity in the furnace body, and a heating pipe is arranged between the inner wall of the furnace body and the outer wall of the graphite barrel; the size of the graphite cylinder is smaller than that of the cavity of the inner wall of the furnace body, and a reduction reaction cavity is arranged between the graphite cylinder and the inner wall of the furnace body; a communicating structure is arranged on the side surface of the graphite cylinder close to the reduction reaction cavity; a reducing gas inlet is formed in the outer wall of the furnace body area where the reduction reaction cavity is located, and the reducing gas inlet is communicated with the reduction reaction cavity; the condensation collection assembly comprises a condensation furnace body, the condensation furnace body is of a cavity structure with a hollow interior and two closed ends, a condensation heating pipe is arranged in the condensation furnace body, a vacuumizing port is arranged on the outer wall of the condensation furnace body, and the vacuumizing port is communicated with the cavity in the condensation furnace body; the condensing furnace body is communicated with the reduction reaction cavity through a communicating piece.
Preferably, the heat treatment furnace further comprises at least one gas preheating assembly, the gas preheating assembly is a box body, and a plurality of groups of electric heating wires and a plurality of groups of flow baffles are arranged in the box body; a plurality of groups of electric heating wires and flow baffle plates are uniformly distributed in the box body, and the flow baffle plates are mutually parallel; the box body is provided with an air inlet and an air outlet, and a mass flow meter is arranged between the air inlet and the box body; the air inlet is vertical to the flow baffle; the gas outlet is communicated with the gas port and/or the reducing gas inlet.
Preferably, the furnace body and the condensing furnace body are of a double-layer structure and comprise an inner wall and an outer wall, and an inner wall and outer wall supporting structure is arranged between the inner wall and the outer wall; the inner wall surfaces of the furnace body and the condensing furnace body are provided with heat preservation layers; the furnace body and the condensing furnace body are provided with a plurality of circulating cooling water ports on the outer walls, and the circulating cooling water ports are communicated with the cavities between the outer walls of the inner walls of the furnace body and the condensing furnace body.
Preferably, the reduction reaction chamber is arranged in a lateral direction of the graphite cylinder.
Preferably, a heat insulating layer is arranged in a gap between the outer wall of the graphite cylinder except the reduction reaction cavity and the inner wall of the furnace body.
Preferably, the communication structure is a through hole or a one-way valve structure; the check valve structure comprises a cover plate and a through hole, wherein the cover plate is hinged with the outer wall of the graphite barrel on one side of the through hole, and the cover plate can completely cover the through hole.
Preferably, the outer wall of the furnace body is provided with at least one thermometer and a pressure gauge, and the thermometer and the pressure gauge are arranged in a cavity inside the furnace body; at least one condensation thermometer is arranged on the outer wall of the condensation furnace body, and the action part of the condensation thermometer is arranged in the cavity inside the condensation furnace body.
Preferably, the communicating member is a graphite member having a hollow interior.
Preferably, a condensation collection box is arranged in the cavity in the condensation furnace body, the condensation collection box is of an internal cavity structure, a condensation heat insulation layer is arranged in a gap between the condensation collection box and the inner wall of the condensation furnace body, and the vacuumizing port is communicated with the cavity in the condensation collection box.
Preferably, the lower part of the condensation furnace body is provided with equipment support legs with rollers.
The heat treatment furnace provided by the utility model has a simple structure, can be used for reacting and treating the gaseous product with other gases before the gaseous product is condensed, can effectively utilize the advantages of the temperature and gas phase reaction of the gaseous product, is beneficial to improving the performance of the final product, and can reduce the energy consumption in the whole process. For example, in the preparation process of the silica-silicon composite material, the heat treatment furnace provided by the utility model can realize the doping of the silicon simple substance while preparing the silica and the silica, so that the silica-silicon composite material block is prepared, the energy consumption in the whole process can be obviously reduced, and the silicon simple substances are dispersed in the silica matrix due to the reduction in the state of the silica gas, so that the performance of the final product, namely the lithium battery, can be favorably improved.
In order to make the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a heating reaction module and a condensing collection module according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a communication structure scheme according to an embodiment of the present invention.
FIG. 3 is a schematic view of a gas pre-heat assembly arrangement according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the attached figure 1, the heat treatment furnace related to the novel heat treatment furnace comprises a heating reaction assembly A, a condensation collection assembly B and a gas preheating assembly C.
The heating reaction component A comprises a furnace body 1 and a graphite barrel 7; the furnace body 1 and the graphite barrel 7 are of a cavity structure with a hollow interior and two closed ends, the graphite barrel 7 is located in the cavity of the furnace body 1, and the heating pipe 4 is arranged between the inner wall of the furnace body 1 and the outer wall of the graphite barrel 7.
The graphite has the advantages of high temperature resistance, strong heat-conducting property, good corrosion resistance, long service life and the like, and has small thermal expansion coefficient in the high-temperature use process, thereby being capable of effectively conducting heat.
Furnace body 1 is bilayer structure, is provided with inside and outside wall bearing structure 3 between two-layer furnace body be provided with a plurality of circulative cooling mouth of a river 10 on the furnace body outer wall, circulative cooling mouth of a river 10 leads to with the cavity UNICOM between the outer wall of furnace body 1 inner wall, injects the circulating water through circulative cooling mouth of a river 10 to the cavity between the outer wall of furnace body 1 inner wall and realizes the cooling to furnace body 1, one or more in circulative cooling mouth of a river 10 is the water filling port, and one or more is the delivery port.
The size of the graphite cylinder 7 is smaller than that of the cavity on the inner wall of the furnace body 1, and a reduction reaction cavity D is arranged between the graphite cylinder 7 and the inner wall of the furnace body 1.
In order to improve the heat preservation performance of the graphite barrel 7, the reduction reaction chamber D is arranged in a certain direction, for example, the right side of the graphite barrel 7 shown in fig. 1, or the reduction reaction chamber D can be arranged above the graphite barrel 7, or in the left side or in the front or rear side direction, and a heat insulation layer 16 can be arranged in a gap between the outer wall of the graphite barrel 7 except the reduction reaction chamber D and the inner wall of the furnace body 1.
Meanwhile, in order to improve the heat insulation performance of the furnace body 1, a heat insulation layer 13 may be arranged on the inner wall surface of the furnace body 1.
The outer wall of the furnace body 1 is provided with a gas port 2, the gas port 2 is communicated with a cavity in the furnace body 1 and is used for charging protective gas, and nitrogen can be introduced to lower the temperature in the equipment furnace more quickly after the reaction is finished, so that the production time is saved.
The gas port 2 is arranged on the outer wall of the furnace body 1 far away from the reduction reaction cavity D, and when the reaction reaches a set temperature, inert gas can be introduced to be used as carrier gas for sublimating the silicon monoxide vapor, so that the silicon monoxide vapor is prevented from being retained in a gap between the graphite cylinder 7 and the inner wall of the furnace body 1.
And a reducing gas inlet 12 is formed in the outer wall of the furnace body 1 region where the reduction reaction cavity D is located, and the reducing gas inlet 12 is communicated with the reduction reaction cavity D.
A communicating structure 7a is arranged on the side face, close to the reduction reaction cavity D, of the graphite barrel 7, gaseous products generated in the graphite barrel 7 can enter the reduction reaction cavity D through the communicating structure 7a, and the communicating structure 7a is a through hole.
Further, the communicating structure 7a may be a one-way valve structure, the one-way valve structure includes a cover plate 7a1 and a through hole 7a2, the cover plate 7a1 is hinged to the outer wall of the graphite cylinder 7 on one side of the through hole 7a2, and the cover plate 7a1 is larger than the through hole 7a2 in size, and can completely cover the through hole 7a 2. When gaseous products are generated inside the graphite cylinder 7, the internal pressure is increased, the cover plate 7a1 is pushed, and the gaseous products enter the reduction reaction chamber D through the through holes 7a 2. The cover plate 7a1 is a graphite member, and can stably operate at high temperature.
The furnace body 1 is provided with at least one thermometer 5 and a pressure gauge 6 on the outer wall, and the thermometer 5 and the pressure gauge 6 are arranged in a cavity inside the furnace body 1 at the action parts and used for measuring the temperature and the pressure in the furnace body 1.
The lower part of the furnace body 1 is provided with an equipment saddle 15 for placing the furnace body 1, and the grounding component 14 is also arranged for grounding the furnace body 1, so that the equipment safety is improved.
The condensation collecting assembly B comprises a condensation furnace body 18, the condensation furnace body 18 is of a cavity structure with two closed ends and a hollow inside, an inner wall and an outer wall supporting structure are arranged between two layers of furnace bodies, a plurality of condensation circulating cooling water gaps 19 are formed in the outer wall of the furnace body, the condensation circulating cooling water gaps 19 are communicated with a cavity between the outer walls of the inner wall of the condensation furnace body 18, circulating water is injected into the cavity between the outer walls of the inner wall of the condensation furnace body 18 through the condensation circulating cooling water gaps 19 to realize cooling of the condensation furnace body 18, one or more of the condensation circulating cooling water gaps 19 are water injection gaps, and one or more of the condensation circulating cooling water gaps are water outlets.
The condensing furnace body 18 is internally provided with a condensing heating pipe 20. And an insulating layer is arranged on the surface of the inner wall of the condensation furnace body 18.
The outer wall of the condensation furnace body 18 is provided with a vacuumizing port 9, and the vacuumizing port 9 is communicated with a cavity in the condensation furnace body 18.
In order to facilitate the collection and condensation of the obtained products, a condensation collection box 21 is arranged in the inner cavity of the condensation furnace body 18, and the condensation collection box 21 is of an inner hollow cavity structure. A condensation heat insulation layer 22 is arranged in a gap between the condensation collection tank 21 and the inner wall of the condensation furnace body 18. The vacuumizing port 9 is communicated with the inner cavity of the condensation collection box 21.
The condensation collection box 21 is connected with the reduction reaction chamber D through a communicating piece 17, and the communicating piece 17 is a graphite piece with a hollow interior.
The lower part of the condensation furnace body 18 is provided with equipment supporting legs 11 with rollers, so that the condensation collection assembly B can be moved conveniently.
At least one condensation thermometer 8 is arranged on the outer wall of the condensation furnace body 18, and the action part of the condensation thermometer 8 is arranged in the cavity inside the condensation furnace body 18 and is used for measuring the temperature in the condensation furnace body 18.
The gas preheating assembly C is used for heating reducing gas or inert gas and comprises a box body Q2, a plurality of groups of electric heating wires Q1 and a plurality of groups of flow baffle plates Q4 are arranged in the box body Q2, the plurality of groups of electric heating wires Q1 and the flow baffle plates Q4 are uniformly distributed in the box body Q2, and the flow baffle plates Q4 are parallel to each other.
The box body Q2 is provided with an air inlet Q5 and an air outlet Q7, and a mass flow meter Q6 is arranged between the air inlet Q5 and the box body Q2. In order to improve the heating effect on the air flow, the air inlet Q5 is perpendicular to the baffle plate Q4.
The gas outlet Q7 is communicated with the gas inlet 2 and/or the reducing gas inlet 12.
When the furnace is used, the heating reaction component A, the condensation collection component B and the gas preheating component C are connected with one another, the circulating cooling water port 10 and the condensation circulating cooling water port 19 are connected to a circulating water system and started, the circulating water system is a common circulating water system and generally comprises a water tank, a water pump and the like, and water is driven to circulate between the inner wall and the outer wall of the furnace body through the water pump. The vacuumizing port 9 is connected with a vacuum pump and started, the vacuum pump is a common vacuum pump, circulating water and cooling liquid are used as internal cooling media to ensure a vacuum or micro-negative pressure environment in the processes of temperature rise and heat preservation, and at least two vacuum pumps are connected to ensure one vacuum pump is on and one standby for improving the system safety.
The heating reaction component A and the condensation collection component B are started to heat, the heating reaction component A and the condensation collection component B respectively use two sets of independent heating and cooling systems, the heating rod 4 is used for heating the graphite barrel 7 and can be made of silicon carbon, graphite and the like, and the thermometer 5 is used for ensuring that the temperature required by the reaction is 1100-1500 ℃; pile up in the graphite section of thick bamboo 7 and put the fashioned silicon of misce bene stoving-silica material and be heated and take place to return to the centre reaction, produce the inferior silicon oxide vapour, the inferior silicon oxide vapour gets into reduction reaction chamber D through communicating structure 7a and fully reacts with the reducing gas who leads to, later gets into the condensation under the effect of negative pressure again and collects subassembly B, condensation collection subassembly B contains independent furnace body heating and cooling system for control collects the inferior silicon oxide vapour condensation fast and forms solid-state inferior silicon oxide within a certain temperature range. After the collection is completed, the equipment supporting legs 11 with the rollers can be separated from the heating reaction assembly A when the condensation collection assembly B is lowered to the preset discharge temperature, so that the condensation collection assembly B can be taken out more conveniently.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (10)
1. A heat treatment furnace is characterized in that: comprises a heating reaction component and a condensation collection component; the heating reaction assembly comprises a furnace body and a graphite barrel; the furnace body and the graphite barrel are of a cavity structure with a hollow interior and two closed ends, the graphite barrel is positioned in a cavity in the furnace body, and a heating pipe is arranged between the inner wall of the furnace body and the outer wall of the graphite barrel; the size of the graphite cylinder is smaller than that of the cavity of the inner wall of the furnace body, and a reduction reaction cavity is arranged between the graphite cylinder and the inner wall of the furnace body; a communicating structure is arranged on the side surface of the graphite cylinder close to the reduction reaction cavity;
a reducing gas inlet is formed in the outer wall of the furnace body area where the reduction reaction cavity is located, and the reducing gas inlet is communicated with the reduction reaction cavity;
the condensation collection assembly comprises a condensation furnace body, the condensation furnace body is of a cavity structure with a hollow interior and two closed ends, a condensation heating pipe is arranged in the condensation furnace body, a vacuumizing port is arranged on the outer wall of the condensation furnace body, and the vacuumizing port is communicated with the cavity in the condensation furnace body; the condensing furnace body is communicated with the reduction reaction cavity through a communicating piece.
2. The thermal processing furnace according to claim 1, further comprising at least one gas preheating assembly, wherein said gas preheating assembly comprises a housing, said housing having a plurality of sets of electric heating wires and a plurality of baffles disposed therein; a plurality of groups of electric heating wires and flow baffle plates are uniformly distributed in the box body, and the flow baffle plates are mutually parallel; the box body is provided with an air inlet and an air outlet, and a mass flowmeter is arranged between the air inlet and the box body; the air inlet is vertical to the flow baffle; the gas outlet is communicated with the gas port and/or the reducing gas inlet.
3. The heat treatment furnace according to claim 1, wherein the furnace body and the condensing furnace body are of a double-layer structure and comprise an inner wall and an outer wall, and an inner wall and an outer wall supporting structure are arranged between the inner wall and the outer wall; the inner wall surfaces of the furnace body and the condensing furnace body are provided with heat preservation layers; the furnace body and the condensing furnace body are provided with a plurality of circulating cooling water ports on the outer walls, and the circulating cooling water ports are communicated with the cavities between the outer walls of the inner walls of the furnace body and the condensing furnace body.
4. The heat treatment furnace according to claim 1, wherein the reduction reaction chamber is provided in a lateral direction of the graphite barrel in an upper, lower, left, right, front, and rear direction.
5. The heat treatment furnace according to claim 4, wherein a heat insulating layer is provided in a space between an outer wall of the graphite barrel excluding the reduction reaction chamber and an inner wall of the furnace body.
6. The heat treatment furnace according to claim 1, wherein the communication structure is a through hole or a check valve structure; the check valve structure comprises a cover plate and a through hole, wherein the cover plate is hinged with the outer wall of the graphite barrel on one side of the through hole, and the cover plate can completely cover the through hole.
7. The heat treatment furnace according to claim 1, wherein at least one of a thermometer and a pressure gauge is provided on an outer wall of the furnace body, and the thermometer and the pressure gauge are provided in a cavity inside the furnace body; at least one condensation thermometer is arranged on the outer wall of the condensation furnace body, and the action part of the condensation thermometer is arranged in the cavity inside the condensation furnace body.
8. The heat treatment furnace according to claim 1, wherein the communicating member is a graphite member having a hollow interior.
9. The heat treatment furnace according to claim 1, wherein a condensation collection box is arranged in the inner cavity of the condensation furnace body, the condensation collection box is of an inner hollow cavity structure, a condensation heat insulation layer is arranged in a gap between the condensation collection box and the inner wall of the condensation furnace body, and the vacuumizing port is communicated with the inner cavity of the condensation collection box.
10. The heat treatment furnace according to claim 1, wherein the condensing furnace body is provided at a lower portion thereof with device legs having rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220186129.6U CN216869170U (en) | 2022-01-24 | 2022-01-24 | Heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220186129.6U CN216869170U (en) | 2022-01-24 | 2022-01-24 | Heat treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216869170U true CN216869170U (en) | 2022-07-01 |
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ID=82153860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220186129.6U Active CN216869170U (en) | 2022-01-24 | 2022-01-24 | Heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216869170U (en) |
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2022
- 2022-01-24 CN CN202220186129.6U patent/CN216869170U/en active Active
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Effective date of registration: 20231220 Address after: 324000 Block EN21-1, Jiangshan Economic Development Zone (Lianhuashan Industrial Park), Jiangshan, Quzhou, Zhejiang Patentee after: Carbon New Energy Group Co.,Ltd. Address before: Room 236, building 12, National University Science Park, no.669 high speed railway, Changxing Economic and Technological Development Zone, Huzhou City, Zhejiang Province, 313000 Patentee before: Zhejiang lichen New Material Technology Co.,Ltd. |