Environment-friendly impregnation equipment for graphite production

Abstract

The utility model relates to an environmental protection dipping equipment for graphite production, including dipping jar and pitch storage jar, its characterized in that, dipping jar and pitch storage jar are connected through the conveying pipeline and the recovery pipeline between, are connected with gas -liquid separator on the recovery pipeline, the liquid export of gas -liquid separator connects the recovery pipeline, the gas export of gas -liquid separator connects the inlet of combustion jar, the outlet of combustion jar connects the air -supply jar. The utility model produces pitch flue gas in the dipping process and reapply in the positive pressure system of dipping jar after the standardized incineration treatment, thereby the utilization of pitch flue gas is promoted, can reduce the emission of pitch flue gas.

Description

Technical Field

[0001] This utility model relates to the field of graphite impregnation, and in particular to an environmentally friendly impregnation device for graphite production. Background Technology

[0002] Patent publication CN218146404U discloses an environmentally friendly impregnation device for graphite production. The device features a first heat-conducting oil jacket and a second heat-conducting oil jacket on the outside of the impregnation tank and the outside of the asphalt pressurization tank, respectively. The asphalt pressurization tank is equipped with a pressurization system and a vacuum system. A heat-conducting oil cooler is installed between the heat-conducting oil source and the first and second heat-conducting oil jackets. The production process is simple to operate, highly automated, and environmentally friendly, employing a cold-in, cold-out technology. However, despite its environmental benefits, the asphalt fumes generated during the impregnation process are not properly utilized, resulting in low utilization rates. The asphalt fumes must undergo standard treatment before being emitted. Utility Model Content

[0003] The purpose of this application is to provide an environmentally friendly impregnation device for graphite production, which aims to solve the problems existing in the prior art.

[0004] This application provides an environmentally friendly impregnation device for graphite production, including an impregnation tank and an asphalt storage tank. The impregnation tank and the asphalt storage tank are connected by a conveying pipeline and a recovery pipeline. A gas-liquid separator is connected to the recovery pipeline. The liquid outlet of the gas-liquid separator is connected to the recovery pipeline. The gas outlet of the gas-liquid separator is connected to the inlet of a combustion tank. The outlet of the combustion tank is connected to a make-up gas tank. The impregnation tank is connected to a gas filter and a vacuum pump on its vacuum line, and to a gas storage tank and an air compressor on its pressure line. The gas storage tank is connected to a make-up air tank, and a make-up air filter is connected between the gas storage tank and the make-up air tank.

[0005] The air replenishment filter includes a housing, with air pipe connectors connected to opposite sides of the housing, a filter element fixed inside the housing between the two air pipe connectors, and the other ends of the two air pipe connectors connected to the air storage tank and the air replenishment tank, respectively.

[0006] The top of the air tank is connected to an air compressor via an air pipe connector, and the bottom of the air tank is connected to a pressure pipeline via an air pipe connector, and is connected to the impregnation tank.

[0007] The liquid outlet of the gas-liquid separator is connected to a liquid filter via a recovery pipeline, and the outlet of the liquid filter is connected to an asphalt storage tank.

[0008] The impregnation tank is equipped with a pressure gauge and a thermometer.

[0009] The air pipe connector is connected to the air replenishment filter, the air storage tank, and the air replenishment tank via threads.

[0010] The beneficial effects of this utility model are: the asphalt fumes generated during the impregnation process are reused in the positive pressure system of the impregnation tank after standardized incineration treatment, thereby improving the utilization rate of asphalt fumes and reducing the emission of asphalt fumes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the air supply filter.

[0013] In the picture: 1. Impregnation tank; 2. Asphalt storage tank; 3. Delivery pipeline; 4. Recovery pipeline; 5. Gas-liquid separator; 6. Liquid filter; 7. Combustion tank; 8. Make-up air tank; 9. Gas filter; 10. Vacuum pump; 11. Air storage tank; 12. Air compressor; 13. Make-up air filter; 14. Air pipe connector; 15. Filter element. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 The illustrated environmentally friendly impregnation equipment for graphite production includes an impregnation tank 1 and an asphalt storage tank 2. Both the impregnation tank 1 and the asphalt storage tank 2 utilize existing equipment, preferably with built-in heating devices. The impregnation tank 1 and the asphalt storage tank 2 are connected via a conveying pipeline 3 and a recovery pipeline 4. The conveying pipeline 3 transfers asphalt from the asphalt storage tank 2 to the impregnation tank 1. The recovery pipeline 4 recovers the asphalt and asphalt fumes from the impregnation tank 1. A gas-liquid separator 5 is connected to the recovery pipeline 4. The asphalt and asphalt fumes are separated in the gas-liquid separator 5 by natural sedimentation. The liquid outlet of the gas-liquid separator 5 is connected to a liquid filter 6 via the recovery pipeline 4. The liquid filter 6 can be a conventional asphalt filter. The outlet of the liquid filter 6 is connected to the asphalt storage tank 2, allowing the asphalt to be recovered into the asphalt storage tank 2 via the recovery pipeline 4.

[0016] The gas outlet of the gas-liquid separator 5 is connected to the inlet of the combustion tank 7, delivering the asphalt flue gas into the combustion tank 7. The combustion tank 7 uses a commercially available asphalt flue gas incinerator, which has built-in temperature control and combustion time control programs. The incinerator can be set with different combustion temperatures according to different combustion methods. For example, when using direct combustion, the combustion temperature of the incinerator is set to above 850℃; when using catalytic combustion, the combustion temperature of the incinerator is set to 400-600℃. Existing incinerators also have catalyst addition inlets and programs.

[0017] The outlet of the combustion tank 7 is connected to the make-up air tank 8. The combustion tank 7 transports the exhaust gas generated after the asphalt flue gas is incinerated to the make-up air tank 8 for temporary storage.

[0018] A gas filter 9 and a vacuum pump 10 are connected to the vacuum line of the impregnation tank 1. The vacuum pump 10 is connected to the impregnation tank 1 through the gas filter 9, which can be a conventional gas filter. A gas storage tank 11 and an air compressor 12 are connected to the pressure line of the impregnation tank 1. The gas storage tank 11 is connected to a make-up gas tank 8, and a make-up gas filter 13 is connected between the gas storage tank 11 and the make-up gas tank 8. The gas in the make-up gas tank 8 enters the gas storage tank 11 through the make-up gas filter 13.

[0019] like Figure 2 As shown, the supplementary air filter 13 includes a housing, with air pipe connectors 14 connected to opposite sides of the housing. A filter element 15 is fixed inside the housing between the two air pipe connectors 14. The filter element 15 can be a single-layer filter element 15 or a multi-layer composite filter element 15. The exhaust gas generated by the combustion canister 7 is filtered and then supplemented into the air storage tank 11. The air compressor 12 pressurizes the gas in the air storage tank 11 into the impregnation tank 1, reducing the pressure inside the air storage tank 11. Under the pressure, the gas in the supplementary air tank 8 is forced into the air storage tank 11, realizing the recycling of gas. The other ends of the two air pipe connectors 14 are connected to the air storage tank 11 and the supplementary air tank 8, respectively.

[0020] The top of the air tank 11 is connected to the air compressor 12 via an air pipe connector 14, and the bottom of the air tank 11 is connected to a pressure line via the air pipe connector 14, and is also connected to the impregnation tank 1. The air pipe connector 14 is threadedly connected to the make-up air filter 13, the air tank 11, and the make-up air tank 8. A seal is conventionally installed at the thread. The make-up air filter 13 can be removed via the thread for easy cleaning or replacement of the filter element 15.

[0021] Preferably, a pressure gauge and a thermometer are conventionally installed inside the impregnation tank 1 to detect the pressure and temperature inside the impregnation tank 1 to ensure the implementation of the impregnation process and the safety of the processing.

[0022] The impregnation process is as follows: 1. Graphite Packing: Graphite components are layered and placed into the container according to their arrangement, with appropriate spacing to prevent them from sticking together. Pay attention to the placement of the graphite components to facilitate asphalt impregnation and to the distance between the graphite components and the vacuum air outlet; the distance should ideally be no less than 300mm.

[0023] 2. Vacuuming: Set appropriate vacuuming pressure and time, preferably with a vacuuming pressure of not less than 0.095 MPa and a time of not less than 2 hours. After vacuuming, introduce asphalt and continue vacuuming until the asphalt level is higher than the graphite parts. Switch to positive pressure.

[0024] 3. Impregnation: Select appropriate impregnation pressure, temperature, and time, and monitor them using instruments within the impregnation pipe. After impregnation, the asphalt is returned to the asphalt storage tank via a recovery pipeline under pressure. During this process, asphalt fumes are separated from the asphalt by a gas-liquid separator. The asphalt fumes are then treated in a combustion tank and stored in an air replenishment tank for future pressurization.

[0025] The above embodiments are not intended to limit the present invention. Unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention is not limited to the examples above. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention. Furthermore, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. An environmentally friendly impregnation device for graphite production, comprising an impregnation tank and an asphalt storage tank, characterized in that, The impregnation tank and the asphalt storage tank are connected by a conveying pipeline and a recovery pipeline. A gas-liquid separator is connected to the recovery pipeline. The liquid outlet of the gas-liquid separator is connected to the recovery pipeline, and the gas outlet of the gas-liquid separator is connected to the inlet of the combustion tank. The outlet of the combustion tank is connected to the air replenishment tank. The impregnation tank is connected to a gas filter and a vacuum pump on its vacuum line, and to a gas storage tank and an air compressor on its pressure line. The gas storage tank is connected to a gas replenishment tank, and a gas replenishment filter is connected between the gas storage tank and the gas replenishment tank.

2. The environmentally friendly impregnation equipment for graphite production according to claim 1, characterized in that, The air replenishment filter includes a housing, with air pipe connectors connected to opposite sides of the housing. A filter element is fixed inside the housing between the two air pipe connectors, and the other ends of the two air pipe connectors are connected to the air storage tank and the air replenishment tank, respectively.

3. The environmentally friendly impregnation equipment for graphite production according to claim 2, characterized in that, The top of the air tank is connected to an air compressor via an air pipe connector, and the bottom of the air tank is connected to a pressure pipeline via an air pipe connector, and is connected to the impregnation tank.

4. The environmentally friendly impregnation equipment for graphite production according to claim 1, characterized in that, The liquid outlet of the gas-liquid separator is connected to a liquid filter via a recovery pipeline, and the outlet of the liquid filter is connected to an asphalt storage tank.

5. The environmentally friendly impregnation equipment for graphite production according to claim 1, characterized in that, The impregnation tank is equipped with a pressure gauge and a thermometer.

6. The environmentally friendly impregnation equipment for graphite production according to claim 2, characterized in that, The air pipe connector is connected to the air replenishment filter, the air storage tank, and the air replenishment tank via threads.

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