CN217358083U - Furnace gas supply device and ternary cathode material sintering system - Google Patents

Abstract

The utility model relates to the field of lithium battery material preparation devices, and provides a kiln gas supply device and a ternary positive electrode material sintering system. The kiln air supply device includes a first primary filter, a precision filter and a vortex fan arranged in sequence according to the air inlet direction, and the first primary filter and the precision filter are arranged at the front end of the air inlet of the vortex fan; A primary filter is a filter with a filtration accuracy of 3 to 8 μm; a precision filter is a filter with a filtration accuracy of 0.2 to 0.5 μm. The ternary cathode material sintering system includes the above-mentioned kiln gas supply device and a kiln, and the kiln is communicated with the outlet of the vortex fan. The kiln air supply device and ternary cathode material sintering system provided by this application can no longer use the air from the air outlet of the air supply station, but can directly deliver air with a pressure of 0.02MPa, and directly send it into the kiln after passing through the filter , no need to decompress it, which can significantly reduce the production cost.

Description

Furnace air supply device and ternary cathode material sintering system

technical field

The utility model relates to the field of lithium battery material preparation devices, in particular to a kiln gas supply device and a ternary positive electrode material sintering system.

Background technique

In the lithium battery material industry, the entry of metal foreign matter into the product will seriously affect the product quality, and when the product containing metal foreign matter is used to make a battery, it may cause an explosion during the use of the battery. Therefore, the gas supply to the furnace is relatively high. Require.

In the production process of ternary cathode materials, air is used as the atmosphere for kiln sintering and is used in a large amount. However, most manufacturers use the air used in the kiln and the air used in the production equipment and instrumentation as an air supply system. The pressure requirements Inconsistency, the gas supply system can only supply gas according to the requirements of high pressure.

When the air used for the sintering atmosphere of the kiln and the air used for the instrumentation equipment of the production device are used as an air supply system, the air pressure for the kiln only needs 0.01-0.02MPa, and the air pressure for the instrumentation equipment needs 0.6MPa, which makes the air compressor station The outlet pressure needs to be no less than 0.6MPa of air, so that the air entering the kiln needs to be decompressed, from 0.6MPa to 0.01-0.02MPa, and the pressure leads to a waste of energy.

In view of this, this application is hereby made.

Utility model content

The purpose of the present invention is to provide a kiln gas supply device and a ternary positive electrode material sintering system, which aims to improve at least one of the problems mentioned in the background art.

The embodiment of the present utility model is realized in this way:

In the first aspect, the utility model provides a gas supply device for a kiln, which includes a first primary filter, a precision filter and a vortex fan arranged in sequence according to the air inlet direction. The first primary filter and the precision filter are provided with At the front end of the air inlet of the vortex fan;

The first primary filter is a filter with a filtering precision of 3-8 μm; the precision filter is a filter with a filtering precision of 0.2-0.5 μm.

In an optional embodiment, the precision filter is a HEPA non-partition high-efficiency air filter.

In an optional embodiment, the first primary filter is a filter with a filtration precision of 5 μm.

In an optional embodiment, the precision filter is a filter with a filtration precision of 0.3 μm.

In an optional embodiment, the first primary filter and the fine filter are integrated into one.

In an optional embodiment, the kiln air supply device further includes an air inlet pipe, the air inlet pipe is communicated with the vortex fan, and the first primary filter and the precision filter are arranged on the air inlet pipe.

In an optional embodiment, the kiln air supply device further includes a second primary effect filter, the second primary effect filter is arranged at the rear end of the air outlet of the vortex fan, and the second primary effect filter has a filtration accuracy of 3-8 μm filter.

In an optional embodiment, the second primary filter is a filter with a filtration precision of 5 μm.

In an optional embodiment, the kiln air supply device further includes an air outlet pipe, the air outlet pipe is communicated with the air outlet, and the second primary filter is arranged on the air outlet pipe.

In a second aspect, the present invention provides a ternary cathode material sintering system, comprising the kiln gas supply device and the kiln according to any of the foregoing embodiments, and the kiln is in communication with the outlet of the vortex fan.

The beneficial effects of the embodiment of the present utility model are:

Since the first primary filter and the precision filter are arranged at the front end of the air inlet of the vortex fan, the air intake can be filtered to remove impurities in the air and ensure the quality of the ternary cathode material obtained by sintering; The kiln air supply device provided by the application can no longer use the air from the air outlet of the air supply station, but can directly use the air in the environment. The air pressure delivered by the vortex fan is 0.02MPa. There is no need to decompress it, and no more energy waste due to decompression.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a gas supply device for a kiln provided by an embodiment of the present invention.

Icon: 100-kiln gas supply device; 110-integrated filter; 120-air inlet pipe; 130-vortex fan; 140-air outlet pipe; 150-second primary filter; 160-air valve.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are a part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, only for the convenience of describing the present utility model and simplifying the description, not Indicates or implies that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Referring to FIG. 1, the present embodiment provides a furnace air supply device 100, including a first primary filter, a precision filter and a vortex fan 130 arranged in sequence according to the air inlet direction, the first primary filter and the precision filter The filter is arranged at the front end of the air inlet of the vortex fan 130 . The first primary filter is a filter with a filtering precision of 3-8 μm; the precision filter is a filter with a filtering precision of 0.2-0.5 μm.

The first primary filter can intercept the dust with a particle size larger than 3~8μm, and realize the first filtration of the air. The air after the first filtration reaches the precision filter to filter out the dust with a particle size larger than 0.2~0.5μm. After two filtrations The impurities in the air are removed, and the air fed into the kiln contains almost no impurities, which can ensure the quality of the ternary cathode material obtained by sintering; The vortex fan 130 corresponds to a single kiln. The air used in the kiln atmosphere no longer takes the air from the air compressor outlet of the gas supply station, but can directly use the air in the environment without worrying about impurities in the air. When working, choose The air pressure delivered by the vortex fan 130 is 0.02 MPa, and it is directly sent to the kiln after passing through the filter, so it is not necessary to depressurize it, and there will be no waste of energy due to decompression.

Therefore, the kiln gas supply device 100 provided by the present application is used to supply gas to the kiln, and the original gas supply station is no longer used for gas supply, which can significantly reduce the production cost of the ternary cathode material during sintering.

Preferably, the first primary filter and the precision filter are integrated to form an integrated filter 110, and the first primary filter and the precision filter are integrated into one, so as to reduce the floor space and meet the It has the function of filtering impurities in the air.

Preferably, the precision filter is a HEPA non-partition high-efficiency air filter.

It should be noted that the first primary filter does not have high requirements, as long as the filter can meet the requirements of intercepting particles with a particle size greater than 3-8 μm; the precision filter is also too high, as long as the interception particle size is larger than Any filter required for particles of 0.2 to 0.5 μm can be used.

Further, the first primary filter is a filter with a filtration precision of 5 μm. The first primary filter intercepts particles with a particle size greater than 5 μm, and the filtration efficiency is as high as 90%.

Further, the precision filter is a filter with a filtration precision of 0.3 μm. The precision filter intercepts particles with a particle size larger than 0.3 μm, and the filtration efficiency is as high as 99.99%.

Further, the kiln air supply device 100 further includes an air inlet pipe 120 , the air inlet pipe 120 is communicated with the vortex fan 130 , and the integrated filter 110 is arranged on the air inlet pipe 120 .

Further, an air valve 160 is provided on the pipe section of the air inlet duct 120 between the integrated filter 110 and the vortex fan 130 for controlling the opening and closing of the air inlet duct 120 .

Further, the kiln air supply device 100 further includes a second primary filter 150, the second primary filter 150 is disposed at the rear end of the air outlet of the vortex fan 130, and the second primary filter 150 has a filtration precision of 3-8 μm. filter.

Setting the second primary filter 150 to filter the outlet air again can avoid the damage of the internal machinery of the fan, which will cause metal foreign matter to enter the kiln atmosphere with the air and affect the product quality.

It should be noted that the reason why the primary filter is chosen instead of the precision filter is mainly to ensure the air inlet pressure. The resistance of the air output by the fan leads to insufficient pressure of the atmosphere entering the kiln, thus affecting the quality of the kiln product sintering.

It should be noted that the second primary filter does not have high requirements, as long as the filter can meet the requirements of intercepting particles with a particle size larger than 3-8 μm.

Further, the second primary filter 150 is a filter with a filtration precision of 5 μm, and its filtration efficiency reaches 90%.

Further, the kiln air supply device 100 further includes an air outlet pipe 140 , the air outlet pipe 140 is communicated with the air outlet, and the second primary filter is arranged on the air outlet pipe 140 .

To sum up, in the kiln air supply device 100 provided by the present application, since the first primary filter and the precision filter are arranged at the front end of the air inlet of the vortex fan 130, the air intake can be filtered to remove impurities in the air , to ensure the quality of the ternary cathode material obtained by sintering; therefore, the kiln air supply device 100 provided by the present application can no longer use the air from the air outlet of the air supply station, but can directly use the air in the environment to select the vortex fan 130 for conveying The air pressure of the kiln is 0.02MPa, and it is directly sent to the kiln after passing through the filter, so there is no need to decompress it, and there will be no waste of energy due to decompression.

After the kiln air supply device provided by this application is implemented, the output amount of 0.6MPa air in the gas supply station is reduced, and the air compressor in the gas supply station is a high-energy-consuming equipment, and the output amount of air is reduced, which further reduces the electricity load. At the same time, it avoids the waste of energy from the high pressure drop to the low pressure at the outlet of the air compressor of the gas supply station. Calculated based on the ternary cathode material device with a production capacity of 20,000 tons, the technical effects before and after the transformation are as follows:

Before reconstruction: Calculated according to the full capacity of the device, the air supply from the gas supply station to the kiln is about 18000Nm ³ . If two centrifugal air compressors are required, the power consumption per hour is 2000KW. The annual power consumption is 16 million KW, and the converted electricity cost is 8 million.

After transformation: Calculated at full capacity, there are 36 kilns in total, each kiln is equipped with a vortex fan, a single vortex fan consumes 20KW per hour, and the 36 kilns consume a total of 720KW. The annual power consumption is calculated to be 5.76 million KW, and the converted electricity cost is 2.88 million.

After the transformation, the production cost of 5.12 million yuan can be saved every year.

The embodiment of the present application also provides a ternary cathode material sintering system, including the kiln air supply device 100 and the kiln as provided in the embodiment of the present application, and the kiln and the outlet of the vortex fan 130 are communicated through the air outlet pipe 140 .

Since the ternary cathode material sintering system provided by the embodiment of the present application includes the kiln gas supply device 100 provided by the embodiment of the present application, the ternary cathode material sintering system can ensure the quality of the ternary cathode material obtained by sintering On the premise to achieve low energy consumption.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. a kiln air supply device, is characterized in that, comprises the first primary effect filter and precision filter and the vortex blower that are arranged successively according to the air inlet direction, the described first primary effect filter and the described precision filter The device is arranged at the front end of the air inlet of the vortex blower; The first primary filter is a filter with a filtering precision of 3-8 μm; the precision filter is a filter with a filtering precision of 0.2-0.5 μm. 2. The kiln air supply device according to claim 1, wherein the precision filter is a HEPA high-efficiency air filter without a partition. 3 . The gas supply device for a kiln according to claim 1 , wherein the first primary filter is a filter with a filtration precision of 5 μm. 4 . 4. The kiln gas supply device according to claim 1, wherein the precision filter is a filter with a filtration precision of 0.3 μm. 5. The kiln gas supply device according to claim 1, wherein the first primary filter and the fine filter are integrated into one. 6. The kiln air supply device according to claim 5, wherein the kiln air supply device further comprises an air inlet pipe, the air inlet pipe is communicated with the vortex fan, and the first initial effect The filter and the fine filter are arranged on the air inlet pipe. 7 . The kiln air supply device according to claim 1 , wherein the kiln air supply device further comprises a second primary effect filter, and the second primary effect filter is arranged at the rear end of the air outlet of the vortex blower. 8 . , the second primary filter is a filter with a filtration precision of 3-8 μm. 8 . The gas supply device for a kiln according to claim 7 , wherein the second primary filter is a filter with a filtration precision of 5 μm. 9 . 9. The kiln air supply device according to claim 7 or 8, wherein the kiln air supply device further comprises an air outlet pipe, the air outlet pipe is communicated with the air outlet, and the second air outlet pipe is connected to the air outlet. The primary filter is arranged on the air outlet pipe. 10 . A ternary cathode material sintering system, characterized in that it comprises the kiln gas supply device according to any one of claims 1 to 9 and a kiln, wherein the kiln is in communication with the outlet of the vortex fan. 11 .

Images